Edited by Dr P. D. Nieuwkoop

adj. Director of the Hubrecht Laboratory

2, Janskerkhof, Utrecht, Holland

Annual issue of the Hubrecht Laboratory

seat of the
.Jnstitut International a Embryologie

(Embryological section of the I.U.B.S)

CONTENTS

b)

c)

Introduction p. 5

List of names and addresses with subjects in preparation (alpha-
betical order) p. 7

List of institutes with composition of scientific staffs (geographical

order) p. 100

List of subjects with names of investigators (arranged according
to organsystems and systematic groups)

General division

I Descriptive and comparative embryology

II Experimental developmental morphology

III Developmental physiology .

IV Development and genetics .
V Development and pathology

VI Regeneration

VII Metamorphosis

e) Short notes and references to new technical methods

p. 120
p. 122
p. 130
p. 137
p. 146
p. 147
p. 149
p. 150

f)

General questions and announcements

I The central embryological library

II The central embryological collection of slides and
material

p. 154

III The Normal Table of Xenopus laevis

Communications of the "Institut International d'Embryologie"
Review of recently published textbooks on embryology .
Annual survey of embryological literature

p. 155

p. 156

p. 120

p. 152

p. 154

p. 156
p. 157
p. 159

5

INTRODUCTION

As we mentioned in the first edition, the foundation of a General
Embryological Information Service was an experiment on
a large scale. Now in publishing the second issue we can state that this
international service really meets with general approval. We received so
many enthousiastic letters from all over the world and, moreover, so many
institutes, not yet represented in the first issue, offered their cooperation that
we feel justified to continue this service.

Comparing the first and the second issue it will be evident that on the one
hand the greater part of the investigations in elaboration have not been
changed, but that on the other hand a rather important number of investi-
gations have been completed and an almost corresponding number of new
investigations have been started. It is the lastmentioned group which is of
special importance, as it demonstrates the progress of the embryological
science and will, therefore, highly interest every embryologist.

We have seriously weighed the desirability of an annual edition of the
G.E.I.S. taking into consideration all the various aspects of this question.
A survey of the current scientific work every two or three years only would
mean that in the course of such a period the greater part of the
investigations would have been completed already for a shorter or longer
time. One would moreover be ignorant of the new researches,
started in the course of this period. In such a way the G.E.I.S. would not
answer its purposes. An annual survey will therefore be
necessary.

It might, however, suffice to mention only those investigations that have
been completed in the course of a year, and those started during this period,
thus reducing the size of the annual publication considerably. Such a procedure
would, however, not give a real reduction in work and even not a marked
decrease in price, as the administrative work, which will not be changed,
represents the main source of expenses. The suitability of the G.E.I.S. would
however decrease markedly, as one would be compelled always to consult
a volume and its supplements together. We therefore decided to publish
annually a complete survey of the current scientific
work.

Surveying the list of institutes included in the second issue, we can state
that the list has been extended considerably, especially as regards the United
States and the far East, whereas unfortunately the central part of Europe
has been seceded for the greater part. The inclusion of the Japanese and
Chinese embryological institutes forms an important contribution to its
completeness. A small number of institutes, however, still remains, which
we could not yet interest in our common enterprise. We ask the collaborators
to support our work by discussing this project with members of the staff
of those institutes.

Practical arrangements

We have united the alphabetical list of names and addresses and that of
names with subjects in preparation in order to get a clearer and more suitable
form of publication.

The list of institutes with composition of scientific staffs has now been

printed in two columns, which gives an important saving of space without a
loss of clearness.

We have moreover changed the chapter „list of subjects with names of
investigators" by omitting the text of the subjects; thus reducing this chapter
to a list of indices only. This text has been printed in two columns. We hope
that this form will still fulfil all requirements of clearness and suitability.

We have tried to classify the subjects in small units in order to simplify
the consultation of this rubric. The various co-workers belonging to a team
have been listed in alphabetical order.

Your attention is again asked for the chapter ..short notes and references
to new technical methods", which we shall have to omit in future in case of
lack of sufficient interest (Cf. the introduction in the first issue).

We wish to draw your attention to the opening of the new chapter, in
which recently appeared text-books will be reviewed
(cf. the text of chapter h). and to the new suggestion of giving an annual
survey of the embryological literature published in the
preceding year (cf. the text of chapter f).

The number of subscriptions taken by institutes and individual workers
has markedly passed the minimum number necessary for a safe financial base.
We can therefore announce with great pleasure that we are able to reduce
the annual subscription to 22,75 florins (dutch currency) which at the present
moment corresponds to $ 6. — .

We are trying to develop a system as simple as possible for the collecting
of the data for the G.E.I. S., which, on the one hand, will considerably ease
the collaborator's work, and, on the other, will restrict the administrative
work at the Hubrecht Laboratory to a great extent. Next year we will try
to complete the collecting of data in the period from April to
July, hence before the beginning of the vacations, so
that we can prepare the new edition directly after the summer holidays. As
we will in future use the same system of classification as developed in the
second issue, we shall send you only the text of the second edition and a
form for n e w subjects in order to reduce the number of forms and circulars.
We would like to emphasize the request to return proofs and forms a t
your earliest convenience, thus saving us a great deal of work
and time and sparing yourself the unpleasantness of being reminded again.

P. D. NIEUWKOOP.

A 7 Alv

LIST OF NAMES AND ADRESSES

with Subjects in Preparation

(.ilplirtln-lli.il order)

ABELOOS, M. Prof. — Lab. de Zool. gen. de la Fac. des Sci. et Stat.

de marine d'Endoume (Marseille), Place Victor Hugo, MARSEILLE,

France.

(no data received over this year)
ABERCROMBIE, M. M.A., B.Sc. — Dept of Embryol., Univ. Coll. London,

Gower Str., LONDON W.C. 1. England.

a. A study of artificially produced duplicitas anterior. Gallus domesticus
(Aves) (in collaboration with Mrs M. R. BELLAIRS)

b. Transplantation experiments on chick blastoderm in tissue culture.
(Aves)

c. Cinematographic study of cell relations in tissue culture. Gallus domesticus

(Aves)
ADAMSTONE, F. B. Ph.D., Prof. — Dept of Zool., Univ. of Illinois,
URBANA, 111., U.S.A.
a. Development of amnion in the chick. Gallus domesticus (Aves)
ADELMANN, H. B. Dr, Prof. — Dept of Zool., Cornell Univ., ITHACA,
N.Y., U.S.A.
(no data received)
ALDEN, R. H. Ph.D., Prof. — Univ. of Tennessee, Fac. of Biol. Sci.,
Med. Div., MEMPHIS 3, Tenn., U.S.A.
a. Study of egg transport and implantation; early development of tropho-
blast; embryo-maternal relationships during nidation. Mus (Mammalia)
ALEXANDROWICZ, St. Dr — Zaklad Anat. Porownawczej U.J. im.
H. Hoyera, KRAKOW, sw. Anny 6, Poland,
a. The accumulation of fat in the subcutaneous tissue of pig embryos.
Sus (Mammalia)
ALGARD, F. T. — Dept of Biol. Sci., Stanford Univ., STANFORD, Cal.,
U.S.A.
a. A study of the cytology and migratory behavior of neural crest melano-
blasts utilizing phase microscopy. (Amphibians)
ALLANSON, Mrs M. Ph.D. — Dept of Zool., King's Coll.. Strand,
LONDON W.C. 2, England,
a. Seasonal growth of reproductive organs of some South African mammals.
Tatera afra and T. brantsi.
ALOISI, Miss G. Ph.D. — 1st. di Anat. comp., Via Belmeloro 8. BOLOG-
NA, (103), Italia,
a. Effects of egg extracts on tumours induced by 1.2. benzo-pyrene in
Anura. Rana esculenta
ALTSCHUL, R. M.D., Prof. — Dept of Anat., Univ. of Saskatchewan,
SASKATOON, Canada,
(no data received over this year)
ALVAREZ GUTIfiRREZ. Miss J. B.S. — Dept de Histol. y Embryol..
Fac. de Med., MONTEVIDEO, Uruguay, S. America,
a. Cytochrome oxidase in the embryo. Chick and Pig (Aves and Mammalia)
(together with the related work of W. BUNO and R. GONZALEZ
MARINO)

Am 8 Aro

AMPRINO, R. M. M.D., Prof. — Inst, of human Anat., Corso Massimo
d'Azeglio 52, TORINO, Italy.

a. Study of the effect of the removal of the anlage of the rhombo-
mesencephalon on morphogenesis of the extrinsic eye muscles. Chick

b. Qualitative and quantitative development of cornea and sclera in chick
embryos following removal of parts of the eye anlage. (Aves)

c. Regulative and regenerative capacities of the primary optic vesicle in
chick embryos. (Aves)

ANCEL, P. Dr, Prof. (Emer.) — Boulevard de Sebastopol 102, PARIS.

France.
ANDERS, G. Dr Phil. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ.
Zurich, Kiinstlergasse 16, ZURICH 6, Schweiz.
a. Developmental physiology and genetics of the lozenge alleles in Droso-
phila melanog aster, (lnsecta)
ANDERSON, Miss I. L. B.A., M.A. — Dept of Biol., Brown Univ.,
PROVIDENCE 12, R.I., U.S.A.
a. An X-ray study of bone development in Rana clamitans during meta-
morphosis. (Amphibia)
ANDRES, G. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37,
111., U.S.A.
a. Fate of embryonic cells after dissociation and reinjection into embryos.
Gallus domesticus (Aves) (in collaboration with P. A. WEISS)
ANNEZ, Ch. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1,
GENT, Belgium,
a. Experimental and cytochemical embryology. Passalurus ambiguus
(Nematoda)
ARIfiNS KAPPERS, J. M.D., Prof. — Anat.-Embryol. Lab. der Rijks Univ.,
Oostersingel 69, GRONINGEN, Holland.

a. Function of the paraphysis cerebri in Ambly stoma mexicanum. (Am-
phibia)

b. Development and function of the paraphysis in Lacertilia. Lac. muralis,
Lac. viridis and Lac. vivipara (Reptilia)

c. Embryological development of the roof of the fourth ventricle. Amblys-
toma mexicanum (Amphibia)

d. Development of the meninges and its connection to the circulation of
cerebrospinal fluid. Amblystoma mexicanum (Amphibia)

e. The development of the brain of Xenopus laevis. (Anura, Amphibia)

(Normal Table)
ARKEL, G. A. van — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with Miss E. v. d. BROEK, Mrs A. S. DUYKER— de BEER,
Miss W. H. T. van HEESCH, J. C. N. KOK, J. W. KUIPER, Miss
R. P. van LOO, E. D. NIJENHUIS, J. E. H. SMIT and W. L. van
UTRECHT).
ARMSTRONG, P. B. B.S., M.D., Prof. — Dept of Anat., School of Med.,
State Univ. of New York, SYRACUSE 10, N.Y., U.S.A.
a. Function in the developing liver. Amblystoma punctatum and Ameirus
nebulosus (Amphibia)
AROSIO, G. Dr — Inst, di Zool. e Anat. comp., Via Celoria 10, MILANO,
a. Myosin. (Vertebrata) Italia.

Ass 9 Bag

ASSENMACHER, I. — Inst. d'Embryol. et de Morphol. exper., Fac. de
Med.. 1. Place de l'Hopital, STRASBOURG, (Bas-Rhin), France,
a. Development of gonads, hypophysis and hypothalamus in birds. Chick,
duck and pigeon (in collaboration with J. BENOIT)

ATLAS M PhD., Prof. — Dept of Biol., Yeshiva Univ., 186th Str. and
Amsterdam Ave, NEW YORK 33, N.Y., U.S.A.

a. Conditions of maturation of the egg and ovulation. Rana pipiens
(Amphibia)

b. Nature of the yolk and its changes in development. Gallus domesticus
(Aves)

AUER, J. M.D., D.M.Sc, Prof. — Dept of Anat., Fac. of Med.. Univ. of

Ottawa, OTTAWA, Canada.

(no data received over this year)
AUSTIN, C. R. M.Sc, B.V.Sc. — Commonwealth Sci. and Industr. Res.

Org., McMaster Anim. Health Lab., Parramatta Rd, GLEBE, N.S.W..

Australia.

a. Descriptive and comparative aspects of initial development. Investigation
of fertilization and spermatogenesis with phase-contrast microscopy. Rat
(Mammals) (in collaboration with A. W. H. BRADEN)

b. Experimental and developmental morphology of initial development.
Chemical and physical factors involved in the sperm penetration of the
zona pellucida. Rat and Rabbit (Mammals) (in collaboration with A.
W. H. BRADEN)

c. Developmental physiology of fertilization and cleavage. Development of
blastocysts and isolated blastomeres after transplantation. Induction of
parthenogenesis. Investigations on the external migration of gametes.
Rabbit (Mammals) (in collaboration with A. W. H. BRADEN)

AUSTOKER, Mrs J. B.Sc. Hon. — Dept of Zool., Univ. of the Wit-

watersrand, Milner Park, JOHANNESBURG, South Africa,
a. The bursa ovarica of Elephantulus myurus jamesoni. (Mammalia)
AVEL, M. Dr, Prof. — Fac. des Sci. de Bordeaux, 40, Rue Lamartine,

TALENCE (Gironde), France.

(no data received)
AVIS, F. — Roscoe B. Jackson Memorial Lab., Box 558, BAR HARBOR,

Me, U.S.A.

(no data received over this year)
BACKSTR5M, S. A. A. — Wenner-Grens Inst, for exper. Biol., Norrtulls-

gatan 16, STOCKHOLM 23, Sweden,
a. Morphological studies on lithium-treated developing sea urchin eggs.

Psammechinus miliaris (Echinodermata)
BAFFONI, G. Dr — 1st. di Zool., Univ. di Stato, Viale B. Bartolomeo 1,

CAGLIARI, Sardegna, Italia.

a. Reaction of nervous cells to periphery. (Amphibians)

b. Regeneration of spinal cord. (Reptiles)

c. Involution of germinal cells of Crustaceans.

BAGlNSKI, S. Dr Med., Prof. — Inst, of Histol. and Embryol., Med.
Acad., Narutowicza Str. 60, Lodz, Poland.

a. Histogenesis of mammalian alveolar epithelium, (in collaboration with
co-workers)

b. Teratogenic action of acids on developing chicken embryos. (Aves) (in
collaboration with co-workers)

Bai 10 Barr

BAILEY, J. R. — Dept of Zool., Duke Univ., DURHAM, N.C., U.S.A.
a. Organogenesis of developing ammocoetes and changes at metamorphosis.

lchthyomyzon (species undescribed). (Cyclostomata) (in collaboration

with E. C. HORN)
BAKER, Mrs A. S. M.S. — Dept of Biol., The John Hopkins Univ., Charles

and 34th Strs, BALTIMORE 18, Maryland, U.S.A.

a. Description of factors affecting pigment pattern (such as quantity and
distribution of melanin, melanophores, tyrosinase, dopa oxidase and
associated substrates and inhibitors) of two genotypes of Rana pipiens
— the wild, spotted variety (genotype bb) and the non-spotted burnsi
mutant (Bb). (Amphibia)

b. Analysis of factors involved in formation of adult pigment pattern in
Rana pipiens at the time of metamorphosis. (Amphibia)

c. The role of epidermis and melanophores in the formation of pigment
pattern in Rana pipiens. (Amphibia)

BAKER, R. C. B.A., M.Sc, Ph.D., Prof. — Dept of Anat., Ohio State Univ.,

COLUMBUS 10, Ohio, U.S.A.

(no data received over this year)
BALINSKY, B. I. Dr of Biol. Sc. — Dept of Zool., Univ. of the Wit-

watersrand, Milner Park, JOHANNESBURG, South Africa.

a. The part played by growth and cellular migration in the formation
of organ rudiments. Xenopus laevis (Amphibia) and Elephantulus
myurus (Mammalia)

b. Correlations in the development of the branchial region. Xenopus laevis,
Bufo vegularis, Bufo carens and Rana angolensis (Amphibia)

c. The eye-lens correlation. Xenopus laevis, Bufo regularis, Bufo carens
and Pyxicephalus natalensis (Amphibia)

BALTZER, F. Dr, Prof. — Zool. Inst, der Univ. Bern, Sahlistr. 8, BERN,

Schweiz.
a. Xenoplastische Chimaren, Triton — Bombinatov, Triton — Xenopus.
BARAKONA, Miss M. — Dept de Med. Exper. del Servicio Nacional de

Salubridad, Av. Irarrazaval 849, SANTIAGO, Chile, South America.

a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts
in the spleen. Cavia cob. (Mammalia) (in collaboration with A. LIP-
SCHUTZ, R. IGLESIAS, S. BRUZZONE a. Miss E. MARDONES)

b. Influence of steroids on the gonadotrophic function of the hypophysis;
and on the follicular development of the ovary. Ovarian grafts in the
spleen; with the simultaneous action of steroids absorbed from beneath
the skin, or absorbed from the spleen; and other devices. Cavia cob.
(Mammalia) (in collaboration with A. LIPSCHUTZ, R. IGLESIAS,
S. BRUZZONE and Miss E. MARDONES)

BARIGOZZI, C. Dr Sc, Prof. — 1st. di Genet., Via Celoria 10, Univ. di
Milano, MILANO, Italia.

a. Development of tumours in rats. (Mammals)

b. Melanomes in Drosophila. (lnsecta)

BARRY, A. Ph.D., Assoc. Prof. — Dept of Anat., Univ. of Michigan.
Med. School, 2500 East Med. Bldg, ANN ARBOR, Mich., U.S.A.
a. Analyses of pressures and velocities in the developing cardiovascular
system, specifically, at the present time, the effect of tension and diastolic
length on systolic energy of the embryonic myocardium. Gallus domes-
ticus, Sus, Homo (Higher Vertebrates)

Bart 1 1 Ba y

BARTH L. G. Dr, Prof. — Dept of Zool., Columbia Univ.. NEW YORK
27 '(City), N.Y., U.S.A.
(no data received)

BAST T H. Ph.D.. B.A., Prof. — Dept of Anat., Univ. of Wisconsin,
MADISON, Wis., U.S.A.
a. Embryology and anatomy of the middle and internal ear. Homo (Mam-
malia)

BATTAGLIA, B. D.Sc. — 1st. di Genet. dell'Univ. di Napoli, Fac. di Sci.,
Via Mezzocannone 8, NAPOLI, Italia,
a. Phosphatase distribution in Amphibian eggs. Rana, Bufo (Anura)

BATTLE, Miss H. I. Ph.D., Prof. — Dept of Zool., Univ. of Western
Ontario, LONDON, Ont., Canada.

a. Effects of urethane (ethyl urethane) on early developmental processes
of Teleosts. Salmo ttutta fario, Brachydanio rerio

b. A survey of the larval and young fish of central lake Erie. (Teleosts)

c. Description of the pelagic eggs and early developmental stages of the
Goldeye. Amphiodon alosoides (Teleosts)

BATTY, Th. A.B. — Dept of Anat., Univ. of Kansas, Med. School,
LAWRENCE, Kan., U.S.A.

a. Development of all systems of the toadfish in relation to behavior.
Opsanus tau (Pisces) (in collaboration with H. C. TRACY and J.
WINBLAD)

b. Development of the gastro-intestinal tract in the toadfish in relationship
to its behavior. Opsanus tau (Pisces)

c. Development of the skeletal, blood vascular, and muscular systems in
relationship to behavior in the toadfish. Opsanus tau (Pisces)

BAUMANN, J. A. Dr, Prof. — Inst. d'Anat., 20, R. ficole de Med.,

GENfiVE, Suisse.

(no data received over this year)
BAUTZMANN, H. Dr Med., Prof. — Anat. Inst, der Univ. Hamburg,

Schottmullerstr. 1, HAMBURG 20, Deutschland, (Britische Zone)

a. Entwicklungsphysiologie der Primitiventwicklung. (Amphibien)

b. Entwicklung des lymphatischen Systems der Wirbeltiere.

BAX, W. A. Dr Med. — Anat.-Embryol. Lab. of the Univ. of Leyden,
Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Development of the mediastinal connective tissue and the pulmonary
ligament. Rat and Man (Mammals)

BAXTER, E. W. B.Sc. — Biol. Dept, Guy's Hosp. Med. School, LON-
DON S.E. 1, England,
a. Biology of Lampreys (including development and metamorphosis).
(Cyclostomata)

BAYLEY, S. T. — M.R.C. Biophysics Res. Unit, King's Coll.. Strand,
LONDON W.C. 2, England.

a. Spermatogenesis of Vivipata vivipara, studied by classical techniques
and by phase-contrast, polarised light, ultra-violet and electron micros-
copy. (Gastropoda) (in collaboration with J. T. RANDALL and
E. J. HANSON)

b. Cytogenesis of vertebrate striped muscle, studied in the electron micro-
scope, and with the aid of tissue culture techniques, (in collaboration
with J. T. RANDALL and E. J. HANSON)

Bea 1 2 Benoit

BEATTY, R. A. M.A. — Genet. Lab., Anim. Breeding and Genet. Res.
Organ., Inst, of Anim. Genet., West Mains Rd, King's Buildings,
EDINBURGH 9, U.K.

a. Heteroploidy in mammals. Spontaneous heteroploidy — analysis of
factors involved. Induced heteroploidy — methods of production.
Viability of polyploid embryos. Physiological embryology of polyploid
embryos. Mus musculus (in collaboration with M. FISCHBERG)

b. Transplantation of mammalian embryos. Mus musculus (in collaboration
with M. FISCHBERG) caniculus.

c. Operative techniques on mammalian embryos. Mus musculus and Lepus
BEAU, A. A. Dr, Prof. — Lab. d'Anat. et d'Histol, Dep. d'Embryol., Fac.

de Med., Inst. Anat, 31, Rue Lionnois, NANCY (Meurthe & Moselle),
France.
a. Organogenese du poumon. Homo (Mammalia) (en collaboration avec
A. DOLLANDER)

BELANGER, L. F. B.A., M.D., M.A., Prof. — Dept of Histol. and Em-
bryol., School of Med., Univ. of Ottawa, OTTAWA, Canada.
a. The development of bones and teeth as shown by radio-autographs with
the help of radio-phosphorus and radio-carbon. (Vertebrates) (in colla-
boration with C. P. LEBLOND and R. GREULICH from Dept of Anat.,
McGill Univ., MONTREAL)

BELLAIRS, A. d'A. M.A., M.Sc, M.R.C.S. — Anat. Dept, London Hosp.
Med. Coll., Univ. of London, Turner Str., LONDON E. 1, England.

a. Descriptive and comparative embryology of reptiles and mammals, with
special reference to head chondrocranium and other organs.

b. Experimental embryology Vipera, Natrix, Lacerta, Anguis (Reptilia)
(in collaboration with Mrs M. R. BELLAIRS)

BELLAIRS, Mrs M. R. B.Sc. — Dept of Embryol., Univ. Coll. London,
Gower Str., LONDON W.C. 1, England.

a. A study of artificially produced duplicitas anterior. Gallus domesticus
(Aves) (in collaboration with M. ABERCROMBIE)

b. Experimental embryology. Vipera, Natrix, Lacerta, Anguis (Reptilia)
(in collaboration with A. d'A. BELLAIRS)

c. Development of the foregut. Gallus domesticus (Aves)
BENAZZI, M. Prof. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4,

PISA, Italia,
a. Fertilization, pseudogamy, cytology and heredity in Planarians. Species

of Tricladida.
BENAZZI— LENTATI, Mrs G. lib.doc. — 1st. di Zool. e Anat. comp.

dell'Univ., Via A. Volta 4, PISA, Italia,
a. Fertilization and cytology in Planarians. Species of Dugesia (Tricladida)
BENOIT, J. Dr en Med., Dr es So, Prof. — Inst. d'Embryol. et de Morphol.

exper., Fac. de Med., 1, Place de l'Hopital, STRASBOURG, (Bas-

Rhin), France,
a. Development of gonads, hypophysis and hypothalamus in birds. Chick,

duck and pigeon (in collaboration with I. ASSENMACHER)
BENOIT, J. A. A. Agr. d'Anat. — Ecole Nat. Veter., TOULOUSE, France.
a. Transplantations inversees de divers territoires de la zone marginale de

de la jeune gastrula chez le Triton et I'Axolotl. (Travail du Laboratoire

d'embryologie de la Fac. de Med. de Bruxelles).

Tr. palmatus, Tr. alpestris et Amblystoma mexicanum (Amphibia)

Benoit 13 Blech

b. Etude de la cinematique tardive des greffons inverses. Triton, Pleurodele
et Axolotl (Amphibia)
BER, A. Dr, Prof. — Dept of Endocr., Fac. of Med., Med. Highschool of
Lodz, Nowotki 137, Lodz, Poland,
a. The influence of hormones on metamorphosis of Xenopus laevis. (Am-
phibia) (in collaboration with A. ORLOWSKI)
BERG, W. E. A.B., M.S., Ph.D., Prof. — Dept of Zool., Univ. of California,
BERKELEY 4, Cal., U.S.A.
a. Studies in protein metabolism of amphibian embryo. II — Free amino
acids; III — Peptides; IV — Uptake of radioactive methionine. Rana
pipiens and Hyla regilla (in collaboration with R. M. EAKIN and
P. B. KUTSKY)
BERGE, J. H. ten — Zool. Lab. der Rijks Univ.. Janskerkhof 3. UTRECHT,
Holland,
a. Determination of Li in amphibian eggs, treated with LiCl. Amblystoma
(in collaboration with J. J. BEZEM)
BERQUIST, H. — Tornblad Inst, for comp. Embryol., Biskopsgatan 7,
LUND, Sweden, (from Anat. Inst., GOTHENBURG)
a. The ontogeny of the diencephalon of reptiles and mammals.
BERRILL, N. J. Prof. — Dept of Zool., Mc Gill Univ., MONTREAL,
Quebec, Canada,
(no data received)
BEZEM, J. J. Ir — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Determination of Li in amphibian-eggs, treated with LiCl. Amblystoma
(in collaboration with J. H. ten BERGE)
BIJTEL, Miss. J. H. Dr So, — Anat.-Embryol. Lab. der Rijks Univ.,
Oostersingel 69, GRONINGEN, Holland.

a. Investigations concerning the process of outgrowth of the tail in Amphibia
with special reference to the role of the chorda dorsalis and the tail
mesoderm. Amblystoma mex., Triton taen. and Xenopus laev.

b. Experiments concerning the factors which determine the normal course
of the outgrowing pronephric duct in Amphibia. Amblystoma mex.,
Triton taen. and Xenopus laev.

c. Development and phylogenetic origin of the columella auris in Amphibia.
Amblystoma mex., Triton taen. and Xenopus laev.

d. The development of the eye of Xenopus laevis. (Anura, Amphibia)
(Normal Table)

BISS, Frau R. — Abt. fur Zoophysiol., Zool. Inst, der Univ., Sahlistr. 8,
BERN, Schweiz.
a. Elektronenoptische Studien uber Plasmastruktur des Eies von Tubifex.
(Annelida)
BLEAKLY, M. C. D.Phil. — Dept of Zool., Univ. of Queensland, George
Str., BRISBANE, Queensland, Australia,
a. Development of the head. Neoceratodus forsteri, Choanichthes (Dipnoi)
BLECHSCHMIDT, E. Dr Med., o.o. Prof. — Anat. Inst, der Univ., Burg-
str. 51, G6TTINGEN, Germany.

a. Wachstumsbewegungen der Hautorgane beim menschlichen Embryo.

b. Wachstum und Differenzierung der Gliedmaszen beim menschlichen
Embryo. (Mammalia)

c. Reliefentwicklung des menschlichen Kleinhirns. (Mammalia)

Bloo 14 Bonin

BLOOMINGDALE, Mme B. — Lab. d'Embryol., Fac. de Med., 15, Rue

Ecole de Med., PARIS Vie, France,
a. Recherch.es sur les facteurs teratogenes. Rat (Mammiferes)
BLOUNT, R. F. B.S., M.S., Ph.D., Prof. — Dept of Anat., Med. Branch,

Univ. of Texas, GALVESTON, Tex., U.S.A.

a. Relations of the hypophysis to development. Amblystoma (Amphibia)

b. Experimental hypertension and embryonic transplantation of hypophysis.
Amblystoma (Amphibia)

c. Endocrine studies and development, time of beginning function. Mus
musculus (Mammalia)

BLUMER, Miss C. — Dept of Zool., Univ. of Chicago, CHICAGO 37,
111., U.S.A.
a. Development of intrinsic functional differences among brain parts tested
by larval deplantation. (Amphibia) (in collaboration with P. A. WEISS)

BLUNTSCHLI, H. Dr, Prof. (Emer.) — Anat. Inst., BERN, Schweiz.

BODENSTEIN, D. H. F. A. — Med. Div., Army Chemical Center, MARY-
LAND, Md, U.S.A.

a. Development of the dorsal fin in Amblystoma punctatum; the relation
of ectoderm and mesoderm in the process of fin induction. (Amphibia)

b. The humeral control of growth and metamorphosis in the cockroach
Periplaneta americana, studied by transplantation and parabiosis experi-
ments. (Insecta)

c. Physiological mechanisms of hormone actions; the relations of hormones
to fat, protein and carbohydrate metabolism in Periplaneta americana
and Drosophila species. (Insecta)

BOEKE, J. Dr, Prof. (Emer.) — Ramstr. 47, UTRECHT, Holland.

a. Regeneration and development of the central nervous system. (Verte-
brates)

b. The autonomous nervous system. (Vertebrates)

c. The infundibular organ of Amphioxus. (Urochordates)

BOELL, E. J. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ., NEW HA-
VEN 11, Conn., U.S.A.

a. The dissociation of morphological and biochemical development in the
central nervous system of Amblystoma punctatum. (Amphibia) (in colla-
boration with S. C. SHEN)

b. A comparative study of the development of cholinesterase, succinic
dehydrogenase, and respiratory activity in the central nervous system
of Amblystoma punctatum. (Amphibia) (in collaboration with S. C.
SHEN)

c. Development of respiratory enzymes in rar muscle. (Mammals) (in col-
laboration with S. C. SHEN)

BONDE, C. von M.A., Ph.D., B.Sc. — Div. of Fisheries, Beach Rd,

Seapoint, CAPE TOWN, S. Africa,
a. Further investigations on the metamorphosis of the Cape Crawfish.

Jasus lalandii (Crustacea)
BONfi, E. — Lab. d'Embryol., Inst, de Zool., Univ. de Louvain, 71, Rue

de Namur, LOUVAIN, Belgique.
a. Modifications of the competence in Tritutus taeniatus after local action

of LiCl. (Urodeles) (in collaboration with G. VANDEBROEK)
BONIN, W. B.A., M.D., Prof. — Dept d'Histol. et d'Embryol., Univ. de

Montreal, 2900, Boulevard du Mont-Royal, MONTREAL, Canada.

Bonin 1 5 Bovey

a. Origine des ganglions craniaux aux depens des placodes epiblastiques.
Amia calva (Pisces)

b. Structure d'un oeuf humain au stade de la ligne primitive. Origine du
mesoblaste. Mode de formation du chorion villeux. (Mammalia)

BONNER, J. T. Ph.D. — Dept of Biol., Princeton Univ., PRINCETON,
N.J., U.S.A.

a. Problems of morphogenetic movements and differentiation in the amoe-
boid slime molds. Dictyostelium discoideum (Acrasiales)

b. Problems of morphogenesis in the slime bacteria. Chondromyces crocatus
(Myxobacteriales)

BOOKHOUT. C. G. A.B., M.A., Ph.D., Prof. — Dept of Zool., Duke Univ.,
DURHAM, N.C., U.S.A.

a. The development of Dasybranchus caducus (Polychaeta) from egg to pre-
adult. Egg deposition, culture methods, day to day observations and records
of living larvae and juveniles, study of fixed and sectioned material.

b. The development of Marphysa regalis (Polychaeta) from the egg to the
sixty-day stage. Egg deposition, culture methods, day to day observations
and records of living larvae and juveniles, study of fixed and sectioned
material.

BOREI, H. Ph.Dr — Wenner-Grens Inst, for exper. Biol., Norrtullsgatan
16, STOCKHOLM 23, Sweden,
a. Respiration of sea urchin eggs in different stages of development. En-
zymatic constitution of eggs, kinetics of enzyme action. Paracenttotus
lividus, Psammechinus miliatis and other sea urchins (Echinoderms)

BOTERENBROOD, Miss E. — Hubrecht Lab., Internat. Embryol. Inst.,
Tanskerkhof 2, and Zool. Lab., Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Analysis of the neural induction. Transfer of activating substances in
horizontal direction through presumptive ectoderm and the subsequent
organisation of a nervous system, (heteroplastic transplantation of
ectoderm) Tritutus taeniatus, alpestris and cristatus (Amphibia) (in
collaboration with P. D. NIEUWKOOP and Miss A. KREMER)
b Developmental physiology of mutants. Drosophila melanogaster (Insecta)
(in collaboration with L. E. NIJENHUIS, F. J. OPPENOORTH and
N. SPRONK)

BOUIN, P. Dr, Prof. (Emer.) — VENDRESSE, Ardennes, France.

BOUNOURE, L. Prof. — Inst, de Zool., Lab. de Biol, gener., Fac. des Sci.
de Strasbourg, 12, Rue de l'Universite, STRASBOURG, France,
a. Initial development: primordial germ-cells, development of the gonads.
(Amphibia)

BOUR, J. W. H. Med.Drs — Anat.-Embryol. Lab. of the Univ. of Leyden.
Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Development of diencephalon and hypophysis in man and car. (Mam-
malia) (in collaboration with J. DANKMEIJER and W. LUYENDIJK)

BOVEY, R. Dr es Sc. — M.R.C. Biophysics Res. Unit, King's Coll., Strand,
LONDON W.C. 2, England.
(Member of staff of Agricultural Res. Council)

a. Etude de la spermiogenese du mouton a l'aide du microscope electronique
et du microscope ordinaire. (Mammalia)

b. Etude a l'aide du microscope electronique de la membrane nucleaire
des ovocytes de Locusta mipatoria et Schistocerca gregoria. (Insecta)

Bovey

16 Bretscher

c. Etude a l'aide du microscope electronique des chromosomes des ovocytes

de Ttiturus cristatus. (Amphibia) (en collaboration avec H. G. C ALLAN

of St Andrew's Univ.)

BOYD, J. D. M.A., M.Sc, M.D., Prof. — Anat. Dept, London, Hosp.

Med. Coll., Univ. of London, Turner Str., LONDON E. 1, England.

a. Investigation on growth and histology of the placentae in situ from
the third month until term. Homo (Mammalia) (in collaboration with
W. J. HAMILTON)

b. Human and mammalian embryology with special reference to nervous
system.

BOYDEN, E. A. Ph.D., Med.Sc, Prof. — Inst, of Anat., School of Med.,
Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A.
(no data received over this year)

BOYER, Ch. C. B.S., M.A., Ph.D., Prof. — Med. Coll. of Alabama. BIR-
MINGHAM 5, Ala., U.S.A.

BOZIC, B. Lie. es Sc. — Lab. de Biol. anim. du P.C.B., Univ. de Paris, 7,
Rue Cuvier, PARIS Ve, France,
a. Physiology of primitive development of the rat embryo. (Mammalia)

BRACHET, J. L. A. M.D., Prof. — Lab. de Morphol. anim., Univ. libre
de Bruxelles, 1850, Chaussee de Wavre, BRUXELLES— Auderghem,
Belgique.

a. Studies on the action of specific antisera on morphogenesis. (Various
species of Amphibia)

b. Studies on the action of amino acids on morphogenesis. (Various species
of Amphibia)

c. Studies on the metabolism of letal hybrids. (Various species of Amphibia)
BRADEN, A. W. H. B.Sc. — Commonwealth Sci. and Industr. Res. Org.,

McMaster Anim. Health Lab., Parramatta Rd, GLEBE, N.S.W.,
Australia.

a. Descriptive and comparative aspects of initial development. Investigation
of fertilization and spermatogenesis with phase-contrast microscopy. Rat
(Mammals) (in collaboration with C. R. AUSTIN)

b. Experimental and developmental morphology of initial development.
Chemical and physical factors involved in the sperm penetration of the
zona pellucida. Rat and Rabbit (Mammals) (in collaboration with
C. R. AUSTIN)

c. Developmental physiology of fertilization and cleavage. Development of
blastocysts and isolated blastomeres after transplantation. Induction of
parthenogenesis. Investigations on the external migration of gametes.
Rabbit (Mammals) (in collaboration with C. R. AUSTIN)

BRAMBELL, F. W. R. D.Sc, F.R.S. — Dept of Zool., Univ. Coll. of
N. Wales, BANGOR, Caernarvonshire, Great Britain,
a. Immunological relations of mother and young in mammals. Rabbit

BRANDT, W. M.D., Ph.D., Prof. — Dept of Anat., Med. School, Hospitals
Centre, BIRMINGHAM 15, England.

a. Development of malformations of limbs. (Amphibians)

b. General investigations on pathological development. (Amphibians)

c. Development of eye. Human (Mammals)

BRETSCHER, A. Dr Phil. II — Abt. fur Zoophysiol., Zool. Inst, der Univ.,
Sahlistr. 8, BERN, Schweiz.
a. Development of the leg of the domestic fowl; Polydactyly. (Aves)

Bretscher 1 7 Brune

b. Development of the leg of the domestic fowl; influence of colchicine.

c. Development of the leg of the domestic fowl: influence of the epidermis.

d. The development of skeleton and muscles of the pelvic-girdle and hind
limbs of Xenopus laevis. (Anura, Amphibia) (Normal Table)

BRETSCHNEIDER. L. H. — Zool. Lab.. State Univ. of Utrecht, Fac. of

Sci., Janskerkhof 3, Utrecht, Holland,
a. Electron microscopical investigation on differentiation, insemination,

growth and differentiation of the egg of Limnaea stagnalis. (Gastropoda)
BRIEN, P. Dr. Prof. — Lab. de Zool., Fac. des Sci., Inst, de Zool. Torley-

Rousseau, Univ. libre de Bruxelles, 50, Av. F. D. Roosevelt, BRUXEL-

LES, Belgique.

a. Reproduction asexuee. Regeneration. Etude des facteurs conditionnant
l'apparition de la sexualite. Formation des cellules sexuelles. Develop-
pement embryonnaire. (Tuniciers, Eponges, Coelenteres et Oligochetes)
(partiellement en collaboration avec Madame M. H. HERLANT)

b. Biologie des Hydro'ides. Bourgeonnement, croissance, sexualite (Hydra)

c. Etudes histologiques du bourgeonnement. Etudes histologiques de la
gametogenese. Experiences par marques colores. Regeneration de la
croissance. Facteurs exterieurs conditionnant le bourgeonnement et la
sexualite. Hydra (Hydro'ides)

BRIGGS, R. W. Ph.D. — Lankenau Hosp. Res. Inst, and Inst, for Cancer
Res., Burholme Ave, Fox Chase. PHILADELPHIA 11, Pa. U.S.A.

a. Cytochemical and transplantation study of cells from partial blastulae
lacking functional chromosomes. Rana (Amphibia) (in collaboration with
E. U. GREEN and T. KING)

b. Study of the reaction between the living sperm nucleus and toluidine
blue. Rana (Amphibia)

c. Development of gynogenetic diploids. Rana (Amphibia)

BROEK, Miss E. v. d. — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT. Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with G. A. van ARKEL, Mrs A. S. DUYKER— de BEER,
Miss W. H. T. van HEESCH, J. C. N. KOK, J. W. KUIPER, Miss
R. P. van LOO, G. D. NIJENHUIS, Miss J. E. H. SMIT and W. L.
van UTRECHT).

BROERS, C. J. Biol, drs — Anat.-Embryol. Lab. der Rijks-Univ., Janskerk-
hof 3, UTRECHT, Holland,
a. The development of the tympanic region and skull. (Mammalia)

BR0NDSTED, H. V. Dr Phil., Prof. — Inst, for Aim. Zool., Universitets-
parken 3, COPENHAGEN 0, Denmark.

a. Regeneration. (Planarians and Sponges)

b. Mammalian embryology (first stages).

BRUINS, G. Drs Vet. — Veter.-Anat. Inst.. Biltstr. 172, UTRECHT,

Holland,
a. Development of genital tract and gonads in domestic animals. (Birds

and Mammals) (in collaboration with G. KREDIET)
BRUNER, Miss J. A., Ph.D. — Zool. Dept, State Univ. of Iowa, IOWA

CITY, Iowa. U.S.A.

a. Gonadotropic hormones in mother and fetus at various stages of preg-
nancy. Man (Mammals)

b. Hormones and sex differentiation. Amblystoma (Amphibians)

Brunn 18 Butler

BRUNNEKREEFT, F. — Zool. Lab. der Rijks Univ., Janskerkhof 3,

UTRECHT, Holland,
a. Influence of centrifugation on animal pole plasm. Limnaea stagnalis

(Gastropoda)
BRUZZONE, S. M.D. — Dept de Med. Exper. del Servicio Nacional de

Salubridad, Av. Irarrazaval 849, SANTIAGO, Chile, South America.

a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts
in the spleen. Cavia cob. (Mammalia) (in collaboration with A. LIP-
SCHUTZ, R. IGLESIAS, Miss E. MARDONES and Miss M.
BARAKONA)

b. Influence of steroids on the gonadotrophic function of the hypophysis;
and on the follicular development of the ovary. Ovarian grafts in the
spleen; with the simultaneous action of steroids absorbed from beneath
the skin, or absorbed from the spleen; and other devices. Cavia cob.
(Mammalia) (in collaboration with A. LIPSCHUTZ, R. IGLESIAS,
Miss E. MARDONES and Miss M. BARAKONA)

BUCHER, N. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich,

Kiinstlergasse 16, ZURICH 6, Schweiz.
a. Influence of radiation and chemicals on Drosophila melanogaster-ovaries.

(Insecta)
BUCHTOWNA, Miss A. M.Sc. — Zaklad Anat. Porownawczej, Inst.

Zool. Uniw., ul. Sienkiewicza 21, WROCLAW, Poland,
a. Development of ribs. Salmonidae and Cyprinodontidae (Teleostei) and

Salamandra (Urodela)
BUNO, W. B.S., Ph.D., Prof. — Dept de Histol. y Embriol., Fac. de Med.,

MONTEVIDEO, Uruguay, S. America.

a. Normal table of the development of Bufo arenarum Hensen. (Amphibia)

b. Role of the Hensen knot. Induction in birds.

c. Prospective areas in the chick blastoderm. (Aves)
(in collaboration with C. M. FRANCHI)

d. Enzymes in the development of the embryo. Chick and pig (Aves and
Mammalia) (in collaboration with R. E. GONZALEZ MARINO and
Miss J. ALVAREZ GUTIERREZ)

BURDON— JONES, C. B.Sc, — Dept of Zool., Univ. Coll. of N. Wales,

BANGOR, Caernarvonshire, Great Britain,
a. Embryology of British Enteropneusta.
BURNS, R. K. B.S., Ph.D., Member — Dept of Embryol., Carnegie Inst.

of Washington, Wolfe and Madison Strs, BALTIMORE 5, Md, U.S.A.
a. The experimental control of sex differentiation in the embryo by means

of hormones. Didelphys virginiana (Marsupialia)
BURR, H. S. Dr, Prof. — Sterling Hall of Med., Yale Univ., 333 Cedar

Str., NEW HAVEN 11, Conn., U.S.A.

(no data received)
BUTLER, E. G. Ph.D., Sc.D., Prof. — Dept of Biol., Princeton Univ.,

PRINCETON, N.J., U.S.A.

a. A study of the mechanics of the formation of the regeneration blastema.
The influence of nerves on blastema formation. Regression in nerveless
non-regenerating limbs. Amblystoma punctatum and Ambl. opacum

b. Blastema formation and regeneration in urodele limbs in which proximo-
distal polarity has been reversed. Amblystoma punctatum and Ambl.
opacum (Amphibia)

Butler 19 Cas

c. Regression (reduction) and subsequent reconstitution in Clavelina lepadi-
formis (Tunicata)
CAIRNS, J. M. Ph.D., Asst Prof. — Dept of Zool., Univ. of Texas.
AUSTIN 12, Texas, U.S.A.

a. The induction of regional characteristics of feather structure. Gallus
domesticus (Aves)

b. The action of genes (frizzled and silky) in the development of the
feather. Gallus domesticus (Aves)

c. Study of the differentiation of the limb structure. Gallus domesticus
CALLAN. H. G. M.A., D.Sc, Prof. — Dept of Zool., University, ST

ANDREWS, England.

a. Reciprocal hybridisation of newts with a view to studying cytoplasmic
effects and hybrid meiosis. Triturus vulgaris, palmatus and cristatus

b. Structure of chromosomes in newt oocytes. Triturus cristatus carnifex
(Amphibia)

c. Morphological and physiological studies on germinal vesicle nucleus
of newt oocytes. Structure and properties of nuclear membrane, sap, etc.
Triturus spp., Xenopus laevis (Amphibia)

CAMBAR, R. Dr — Fac. des Sci. de Bordeaux, 40, Rue Lamartine, TA-
LENCE (Gironde), France.

a. Les facteurs de la morphogenese du mesonephros chez les Amphibiens.

b. Developpement du systeme pronephretique chez les Amphibiens.
CAMPENHOUT, E. van Dr, Prof. — Inst. d'Anat., Univ. de Louvain, 38,

Rue des Recollets, LOUVAIN, Belgique.

a. Embryological development of the innervation of the gonads. (Birds)

b. Regeneration of the central nervous system in the chick embryo. (Birds)
CARR, Miss E. B. B.Sc. — Dept of Embryol., Univ. Coll. London, Gower

Str., LONDON W.C. 1, England,
a. The development of the reproductive tracts in mammals with special
reference to rabbit. Oryctolagus cuniculus
CARTER, H. B. Dr — Wool Biol. Lab., Commonwealth Sci. and Industr.
Res. Org., 17, Randle St, SYDNEY, N.S.W., Australia,
a. Morphogenesis of skin and its appendages in mammals, especially the
sheep.
CARTER, T. C. Ph.D. — Med. Res. Council, Inst, of Anim. Genet., West
Mains Rd, King's Buildings, EDINBURGH 9, U.K.

a. Developmental study of the luxate (tibial hemimelia) mutant in the
house mouse. (Mammalia)

b. Study of abnormal embryos induced by injecting trypan blue into preg-
nant mice. Mus musculus (Mammalia) (in collaboration with C. H.
WADDINGTON)

CASPARI, E. Ph.D., Prof. — Dept of Biol., Wesleyan Univ., MIDDLE-
TOWN, Conn., U.S.A.

a. Development of eye pigmentation in wild type, aa and wa wa Ephestia
kuhniella (Lepidoptera)

b. Development of tail structure in normal, Brachyury, Kenky and Fused
mice. Mus musculus (Mammalia)

CASTIGLIONI, M. C. — 1st. di Genet., Fac. di Sci., Univ. di Milano, Via
Celoria 10, MILANO, Italia,
a. Development of imaginal discs for the study of the compound eye
formation. Drosophila (Insecta)

Cat 20 Chia

CATE, G. ten — Anat.-Embryol. Lab., Univ. van Amsterdam, Mauritskade 61,
AMSTERDAM O., Holland.

a. Immunological study about the development of the eye-lens in vertebrates.
Origin of the specific lens-substances. Rana (Amphibia), Gallus (Aves)

b. Biochemical study of the metabolism of embryonic differentiation in
general and especially that of the eye-lens. Rana, a.o. (Amphibia), Gallus,
a.o. (Aves)

CEI, J. M. Dr Biol.Sc. — Inst, de Zool., Univ. Nac. de Tucuman, Miguel
Lillo 205, TUCUMAN, Argentien, S. America,
a. Ecological and biochemical characteristics of the first stages of develop-
ment of typical neotropical forms. (South American Batrachians)

CELESTINO da COSTA, A. Dr hon. causa: Bordeaux 1923, Toulouse
1929, Prof. — Inst, de Histol. e Embriol., Fac. de Med., LISBOA,
Portugal. (no data received over this year)

CHAMBERS, W. W. B.S., Ph.D., asst Prof. — Dept of Anat, School
of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A.
a. Regeneration in the spinal cord of car and dog. (Mammals) (In colla-
boration with W. F. WINDLE)

CHANDLER, S. B. A.B., A.M., M.D., Prof. — School of Med., West
Virginia Univ., MORGANTOWN, W.Va., U.S.A.
(no data received over this year)

CHANG, C. Y. M.S. — Zool. Dept, State Univ. of Iowa, IOWA CITY,
Iowa, U.S.A.
a. Sex determination in amphibians by steroid hormones. (Anurans)

CHANG, M. C. Ph.D. — Worcester Foundation for Exp. Biol., SHREWS-
BURY, Mass., U.S.A.
a. Physiology of fertilization and cleavage in rabbit. Transplantation of
rabbit blastocysts. Development of rabbit ova at different stages in
relation to ovulation time of recipients. Cleavage of unfertilized ferret
ova. (Mammals)

CHANMUGAM, P. K. M.Sc, M.R.C.S., L.R.C.P., L.M.S. — Dept of
Anat., Fac. of Med., Univ. of Ceylon, Kynsey Rd, COLOMBO 8,
Ceylon, India, Asia.
a. Descriptive and comparative embryology. Primates

CHAPMAN, G. M.A., Ph.D. — Queen Mary College, Univ. of London,
Mile End Rd, LONDON E 1, England.

a. Descriptive and comparative embryology of Scoloplos armiger. (Poly-
chaeta)

b. Descriptive and comparative embryology of Phyllodoce maculata. (Poly-

CHASE, H. B. Ph.D., Prof. — Arnold Biol. Lab., Brown Univ., PROVID-
ENCE 12, R.I., U.S.A.

a. Study of anophthalmia and microphthalmia. Mus musculus (Mammalia)

b. Study of skin and its derivatives with emphasis on hair development
and pigment distribution. Mus musculus (Mammalia)

CHENEY, R. H. Dr, Prof. — Dept of Biol., Brooklyn Coll., Bedford Ave
and Ave H., BROOKLYN 10, N.Y., U.S.A. (no data received)

CHIAKULAS, J. M.S. — Dept of Zool., Univ. of Chicago, CHICAGO 37,
111., U.S.A.
a. Affinities among different tissues tested by larval wound healing.
(Amphibia) (under direction of P. A. WEISS)

Chic 21 Clark

CHIEFFI, G. Dr — 1st. di Genet. dell'Univ. di Napoli, Fac. di Sci.. Via
Mezzocannone 8. NAPOLI. Italia,
a. Development and differentiation of gonads in Elasmobranchii. Torpedo
ocellata and Scylliorhinus canicula (Fishes)
CHIH, C. S. — Lab. d'Hormonol. et Cytol. exper., ficole des Hautes Etudes,
Univ. Hopit. Broca, III Rue L. M. Nordmann. PARIS 13e, France,
a. Hormonal release of the heterotypic division (meiosis) in Rabbit.
(Mammalia) (in collaboration with R. MORICARD)
CHOW, P. S. B.Sc. — Dept of Biol., Nat. Univ. of Chekiang, HANG-
CHOW, China,
a. Studies on eye-stalk hormone in Crustacea:

1. Isolation and purification of the hormone preparation.

2. Chemical identification of the active principle.

3. Mechanism of the hormonal action.

Caridina denticulata (Decapoda) (in collaboration with H. M. KIANG,
J. CHU and Miss N. TSAI)
CHU, J. B.Sc. — Dept of Biol., Nat. Univ. of Chekiang, HANGCHOW,
China,
a. Studies on eye-stalk hormone in Crustacea:

1. Isolation and purification of the hormone preparation.

2. Chemical identification of the active principle.

3. Mechanism of the hormonal action.

Caridina denticulata (Decapoda) (in collaboration with H. M. KIANG,
P. S. CHOW and Miss N. TSAI)
CHUANG, H. H. Dr, Prof. — Dept of Zool., Coll. of Sci., Nat. Univ.
of Peking, Ching Shan Tung Chieh, PEIPING, China.

a. Das Material iiber die Zusammenarbeit der Keimblatter — Versuche
mit Grossdefekt an verschiedenen Regionen der Neurula — soil weiter
bearbeitet werden. Triton alpestris und T. taeniatus (Amphibia) (dar-
iiber erschien bereits eine vorlaufige Mitteilung in Z. Naturforschg 2b.
1947)

b. Die Wirkung von Sulfa-Verbindungen auf die embryonale Entwicklung
von Rana nigromaculata. (Amphibia)

C1GADA, Miss M. Dr — 1st. di Zool. e Anat. comp., Via Celoria 10,
MILANO, Italia,
a. Protein changes in embryonic development. (Aves, Amphibia, Echino-
dermata)
CITTERIO, P. Grad. stud. — 1st. di Zool. e Anat. comp., Via Celoria 10,
MILANO, Italia,
a. Determination in early development. (Amphibia) and ( Echinodermata)
CLAES, M. T. — Lab. d'Embryol., Inst, de Zool., Univ. de Louvain, 71,
Rue de Namur, LOUVAIN, Belgique.
a. The development of the trabeculae cranii in perch embryos treated with
LiCl. Perca (Osteichtyes) (in collaboration with G. VANDEBROEK)
CLANCY, W. — Biol. Dept, Univ. of Oregon, EUGENE, Ore., U.S.A.

(no data received over this year)
CLARK. E. R. A.B., M.D., Sc.D., Prof. Emer. — Dept of Anat., School
of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A.
a. Studies on growth of various implanted tissues with the rabbit's ear
chamber technique. (Mammals) (in collaboration with R. G. WIL-
LIAMS)

Clark 22 Colwin

CLARK, H. B.A., Ph.D., Prof. — Dept of Zool., Univ. of Connecticut,

STORRS, Conn., U.S.A. (no data received over this year)

CLAVERT, J. Dr en Med., Dr es Sc, Prof. — Inst. d'Embryol. et de

Morphol. exper., Fac. de Med., 1, Place de l'Hopital, STRASBOURG,

(Bas-Rhin), France,
a. Egg formation in birds. (Role of female hormone in vitellogenesis).

Pigeon, duck and chick
CLAYTON, Mrs R. M. B.A. — Univ. Dept of Genet., Inst, of Anim.

Genet., West Mains Rd, King's Builings, EDINBURGH 9, U.K.

a. Studies of differentiation by immunological and other techniques. Triton
alpestris (Amphibia)

b. Studies of a mutant in a highly inbred line by immunological and allied
techniques: The mutants pink eye and luxate in CBA mice and albino
in an inbred strain of this laboratory. Mus musculus (Mammalia)

CLEAT, N. D. B.Sc. — Dept of Zool., Univ. of Edinburgh, West Mains

Rd, EDINBURGH 9, Scotland,
a. Post-embryonic growth and development of the oribatid mite Schelori-

bates laevigatus (Koch). (Arachnida, Acarina)
CLEMENT, A. C. Ph.D., Prof. — Emory University, Dept of Biol.,

EMORY UNIVERSITY, Ga, U.S.A.
a. Experimental analysis of germinal localization in Ilyanassa obsoleta.

(Effects of removal of the polar lobe, development of isolated blastomeres

and other fractions of the egg. Effects of various chemicals on differen-
tiation ) . (Gastropoda)
COHEN, S. Ph.D. — Univ. of Colorado, Med. Center, Dept of Pediatrics,

4200 east Ninth Ave, DENVER 7, Col., U.S.A.
a. The metabolic maturation of the liver. The capacity to synthesize creatine

from glycocyamine and methyl donors is tested with livers from guinea

pig feti of different intrauterine ages. (Mammals) (in collaboration with

J. DEMETRY)
COLLISTER, Miss R. M. — Anat.-Embryol. Lab. of the Univ. of Leyden,

Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Investigations on congenital heartmalformations. X-ray and anatomical

dissection. Collateral circulations. Homo (Mammalia) (in collaboration

with J. DANKMEIJER and H. A. SNELLEN)
COLOMBO, G. Dr — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Loredan

6, PADOVA, Italia.

a. Chromosomes in early development. (Amphibia)

b. Effects of hormones on cleavage. (Amphibia)

COLWIN, A. L. Ph.D., Prof. — Dept of Biol., Queens Coll., Flushing,
L.I., NEW YORK, N.Y., U.S.A.

a. Fertilization reaction. Saccoglossus ( Enter opneusta) (in collaboration
with Mrs L. H. COLWIN)

b. Normal and experimental development. Saccoglossus (Enter opneusta)
(in collaboration with Mrs L. H. COLWIN)

c. Effect of certain chemicals on development. Molgula, Ciona and Styela
(Tunicata)

COLWIN, Mrs L. H. Ph.D., Prof. — Dept of Biol., Queens Coll., Flushing,
L.I., NEW YORK, N.Y., U.S.A.
a. Fertilization reaction. Saccoglossus (Enteropneusta) (in collaboration
with A. L. COLWIN)

Colwin 23 Cs

b. Normal and experimental development. Saccoglossus (Enteropneusta)
(in collaboration with A. L. COLWIN)

c. Development of Thyone. (Holothuria)

CONKLIN, E. G. Dr, Prof. (Emer.) — Princeton Univ., PRINCETON,

N.J., U.S.A.
COPENHAVER, W. M. Dr, Prof. — Coll. of Phys. and Surg., Columbia

Univ., 632. West 168th Str., NEW YORK City, N.Y., U.S.A.

(no data received)
CORDIER, J. Dr, Prof. — Inst. d'Histol., Fac. de Med., 97, Rue aux

Laines, BRUXELLES, Belgique.
a. Development of skin and sense organs of Xenopus laevis, including

histological study of the development of the chromatophores. (Anura,

Amphibia) (Normal Table)
CORNER, G. W. D.Sc, A.B., M.D., Prof. — Dept of Embryol., Carnegie

Inst, of Washington, Wolfe and Madison Strs, BALTIMORE 5, Md,

U.S.A.

a. Histology of uterus and ovaries in reproductive cycle of primates. Chiefly
Macaca rhesus (Mammalia)

b. Embryological study of pregnancies terminated because of genetic or
maternal factors threatening the fetus, e.g. rubella, mongolism. Homo
sapiens (Mammalia)

c. Physiology of uterine muscle. (Mammalia)

COSTELLO, D. P. Ph.D., Prof. — Dept of Zool., Univ. of North Carolina.
CHAPEL HILL, N.C., U.S.A.

a. An investigation of the cytological and morphological effects of low
temperature on fertilized eggs of the annelid, Chaetopterus pergamen-
taceus. (in collaboration with Miss C. HENLEY)

b. Studies on the effects of radioactive phosphorus on mitosis in epithelial
cells of Ambly stoma punctatum larvae. (Amphibia) (in collaboration
with Miss C. HENLEY)

COTRONEI, G. Dott., Prof. — 1st. di Anat. comp. dell'Univ. di Roma,
Fac. di Sci.. Via Borelli 50, ROMA, Italia.
a. Recerche su trapianti, espianti e parabiosi tra Anfibi anuvi e utodeli
alio scopo di indagare i processi di regolazione, differenziazione nel
quadro dei problemi della costituzione biologica. (in collaboration with
T. PERRI and Mrs L. URBANI— MISTRUZZI)
COURRIER, R. Prof. — Lab. de Morphol. exper. et Endocrinol., Coll. de
France, Place Marcelin Berthelot, PARIS Ve, France,
a. Endrocrinologie de la gestation. (Mammalia)
CRAIG, Miss M. M. — Dept of Genet., Coll. of Agric, Univ. of Connecticut,
Storrs Agric. Exper. Stat., STORRS, Conn., U.S.A.
a. Analysis, by means of tantalum-foil blocking, of the development of the
tail in chick embryos. Gallus domesticus (Aves) (in collaboration with
E. ZWILLING)
CROMPTON, A. W. M.Sc. — Zool. Inst., Univ. of Stellenbosch, STEL-
LENBOSCH, South Africa,
a. Cranial ontogenesis. Spheniscus demersus (Spheniscidae, Aves)
CSAPO, A. M.D. — Dept of Embryol., Carnegie Inst, of Washington,
Wolfe and Madison Strs, BALTIMORE 5, Md, U.S.A.
a. Physiology of uterine muscle, including developmental physiology. Sus
scro[a and Lepus cuniculus (Mammalia)

Cz 24 Dank

CZAPIK, Miss A. B.Sc. — Zool. Dept of the Jagellonian Univ., KRAKOW

(Cracow), St. Anne 6, Poland,
a. Development of the heart of Insects. Agelastica alni L. (Coleoptera)
DALCQ, A. M. M.D., Prof. — Lab. d'Anat. et d'Embryol., Fac. de Med.

de l'Univ., 97, Rue aux Laines, BRUXELLES, Belgique.

a. Cytochemistry of early stages of development. (Rodentia and Insecti-
vora) (in collaboration with coworkers)

b. Regulation in blastula and gastrula stage. (Urodela and Anura) (in
collaboration with coworkers)

DALES, R. P.. B.Sc. — Queen Mary College, Univ. of London, Mile End

Rd, LONDON E. 1, England,
a. Breeding, larval development and ecology of Polychaetes. Nereis diversi-

color (Nereidae), Tharyx marioni (Cirratulidae) , Heteromastus fili-

formis (Capitellidae) .
DALTON, H. C. Ph.D., Prof. — Dept of Zool., New York Univ., NEW

YORK, N.Y., U.S.A.
a. Gene action controlling development of pigmentation in white and dark

strains of Mexican axolotl. Siredon mexicanum (Amphibia)
DAMAS, H. F. C. Dr Sc, Agr. Zool. — Inst, de Zool. Ed. Van Beneden,

Fac. des Sci., Dept Morphol. des Chordes, 22, Quai Ed. Van Beneden,

LIEGE, Belgique.
a. Etude descriptive et comparative du developpement des Lamproies.

Petromyzon mavinus, Lampetta fluviatilis et L. planed. (Cyclostomes)
DAN, Mrs J. C Ph.D. — Embryol. Section, Dept of Biol., Fac. of Sci.,

Tokyo Metropolitan Univ., Meguro-ku, TOKYO, Japan,
a. Phase contrast micromanipulation study of fertilization processes. Various

species of Echinodermata
DAN, K. Ph.D., Rigaku Hakushi, Prof. — Fac. of Sci., Dept of Biol.,

Embryol. Section, Tokyo Metropolitan Univ., Meguro-ku, TOKYO,

Japan.

a. Research into causes of form change in early development of sea-
urchins, from pre-cleavage through metamorphosis. Various species of
Echinoidea

b. Birefringence studies of dividing sea-urchin eggs. Various species of
Echinoidea

D'ANCONA, U. Prof. — 1st. di Zool. et Anat. comp., Fac. di Sci., Via
Loredan 6, PADOVA, Italia,
a. Differentiation of the gonad in vertebrates, especially fishes.

DANKMEIJER, J. Dr Med., Prof. — Anat.-Embryol. Lab. of the Univ.
of Leyden, Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEI-
DEN, Holland.

a. Permeability of the placenta in rat and guinea-pig. Investigation with
isotopes. (Mammalia) (in collaboration with C. B. HEYN)

b. Development of uterus and ovary in man. (Mammalia) (in collaboration
with Miss A. DEKKER)

c. Development of diencephalon and hypophysis in man and mammals.
(in collaboration with W. LUYENDIJK and J. W. H. BOUR)

d. Investigations on congenital heartmalformations; X-ray and anatomical
dissection; collateral circulations. Homo (Mammalia) (in collaboration
with H. A. SNELLEN and Miss R. M. COLLISTER)

Dat 25 Den

DATKOWNA, H. Dr — Zaklad Anat. Porownawczej U.J. im. H. Hoyera,

KRAKOW, sw. Anny 6, Poland,
a. Osmotic pressure and fish embryos. Salmo trutta (Pisces)
DAVIDSON, Miss P. B.Sc. — Commonwealth Sci. and Ind. Res. Org.,

McMaster Anim. Health Lab., Parramatta Rd, GLEBE, N.S.W.,

Australia. (Guest-worker from C.S.I.R.O., Wool Biol. Lab., 17 Randle

St, SYDNEY, N.S.W.)

a. Development of vibrissa follicles. Mouse (Mammals) (in collaboration
with Miss M. H. HARDY)

b. Relation of dermis to epidermis in differentiation of skin and hairs by
in vivo and in vitro techniques. Mouse (Mammals) (in colla-
boration with Miss M. H. HARDY)

c. Differentiation of feather follicles in tissue culture. Chick (Aves)
DAVIES, D. H. M.Sc. — Div. of Fisheries, Beach Rd, Seapoint, CAPE

TOWN, S. Africa,
a. The development of the South African Stockfish, Merluccius capensis.
(Teleostei)
DAVIES, F. M.D., D.Sc, Prof. — Dept of Anat., Fac. of Med., Univ.
of Sheffield, SHEFFIELD, England,
a. The development and histogenesis of the conducting system of the mam-
malian heart. Sheep (in coll. with E. T. B. FRANCIS, Dept of Zool.)
DAVIES, H. G. B.Sc. — M.R.C. Biophysics Res. Unit, King's Coll., Strand,
LONDON W.C. 2, England.
a. Ultra-violet studies of cells growing in tissue culture. (Aves and Mam-
malia) (in collaboration with P. M. B. WALKER)
DAWSON, A. B. A.B., Ph.D., D.Sc, Prof. — Biol. Lab's, Harvard Univ.,
Divinity Ave, CAMBRIDGE 38, Mass., U.S.A.
a. Histochemical evidence of early differentiation of the suprarenal gland
of the chicken. Gallus domesticus (Aves)
DEKKER, Miss A. Med.Dra — Anat.-Embryol. Lab. of the Univ. of Leyden,
Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Development of uterus and ovary in man. (Mammalia) (in collaboration
with J. DANKMEIJER)
DELANNEY, L. E. Dr, Prof. — Dept of Biol., Univ. of Notre Dame,
NOTRE DAME, Ind., U.S.A. (no data received)

DELSOL, M. Lie. es Sc. — Lab. de Biol. anim. (P.C.B. section II), Fac.
des Sci., Univ. de Paris, 12, Rue Cuvier, PARIS Ve, France,
a. fitude de Taction des antithyroidiens (thiouracil etc.) au de la vie
larvaire et de la metamorphose des Batraciens. Discoglossus pictus
DEMETRY, J. M.S. — Univ. of Colorado, Med. Center. Dept of Pediatrics,
4200 east Ninth Ave, DENVER 7. Col., U.S.A.
a. The metabolic maturation of the liver. The capacity to synthesize
creatine from glycocyamine and methyl donors is tested with livers
from guinea pig feti of different intrauterine ages. (Mammals) (in
collaboration with S. COHEN)
DENT, J. N. A.B., Ph.D., Assoc. Prof. — Miller School of Biol., Univ.
of Virginia, CHARLOTTESVILLE, Va, U.S.A.

a. Effects of innervation on polarity-reversal of regenerating limbs. Triturus
viridescens (Amphibia)

b. Uptake of inorganic iodine in metamorphosing amphibians and effects
thereof. Rana pipiens

Des 26 Don

DESCLAUX, P. Prof. agr. — Lab. d'Embryol., Fac. de Med., 15, Rue
Ecole de Med, PARIS Vie, France.

a. Embryologie descriptive du cerveau et specialement du diencephale. Rat
(Mammi feres)

b. Influence teratogene des intoxications maternelles. Femme et Rat (Mam-
mi feres)

DETH, J. H. M. G. van M.Dr — Anat.-Embryol. Lab. der Rijks Univ.,
Janskerkhof 3, UTRECHT, Holland.

a. Determination of sex in birds and mammals. Gallus domesticus and Cavia
cobaya

b. Origin of the asymmetry of the embryo. Gallus domesticus (Aves)

c. Lens induction in vitro. Gallus domesticus (Aves)

d. Tooth development. Rat (Mammalia)

DETWILER, S. R. Dr, Prof. — Dept of Anat, Coll. of Phys. and Surg.,

Columbia Univ., 630, West 168th St, NEW YORK City, N.Y., U.S.A.

(no data received)
DEUCHAR, Miss E. M. B.A. — Univ. Dept of Genet., Inst, of Anim.

Genet., West Mains Rd, King's Buildings, EDINBURGH 9, U.K.
a. Study of inductions obtained when cells from different regions of primary

organizer are recombined in various proportions after disaggregation

in alkali. (Amphibia)
DEVILLERS, Ch. Dr es Sc. — Lab. d'Embryogenie comp., Coll. de France,

Place Marcelin Berthelot, PARIS Ve, France.

a. Mecanique de la gastrulation chez la Ttuite, Salmo irideus. (Pisces)
Nature et fonction du cortex.

b. Etude des substances necessaires a la croissance et a la differentiation
du blastoderme de l'oeuf de Truite, S. irideus, separe de son vitellus et
cultive in vitro. (Pisces) (en collaboration avec N. SKREB)

c. Etude experimental de la formation des os dermiques craniens de
Salmo fario. (Pisces)

d. Translocations latitudinales dans la gastrula d'Urodele. Pleurodeles et
Triton

DIDING, S. Fil. mag. — Embryol. Dept, Zool. Inst., Univ. of Lund, LUND,
Sweden,
a. Development of Brachiopoda, esp. Crania.
DIETZ, D. — Roscoe B. Jackson Memorial Lab., Box 558, BAR HARBOR,
Me, U.S.A.

(no data received over this year)
DODDS, G. S. B.A., M.A., Ph.D., Prof. — School, of Med., West Virginia
Univ., MORGANTOWN, W.Va., U.S.A.
(no data received over this year)
DOLLANDER, A. Dr, Delegue Agr. — Lab. d'Anat. et d'Histol., Dep.
d'Embryol., Fac. de Med., Inst. Anat., 31, Rue Lionnois, NANCY
(Meurthe & Moselle), France,
a. Etude du revetement superficiel de l'oeuf. Triturus helveticus, Tr. aU
pestris et Tr. cristatus (Amphibia)
b. Organogenese du poumon. Homo (Mammalia) (en collaboration avec
A. A. BEAU)
DONALDSON, J. C. M.D., Prof. — Dept of Anat., School of Med., Univ.
of Pittsburgh, PITTSBURGH 13, Pa, U.S.A.
a. Studies on the developing human pancreas. (Mammalia)

Dou 27 Ebert

DOUGLAS, R. I. B.Sc. — Dept of Zool.. Univ. of Edinburgh, West Mains

Rd. EDINBURGH 9, Scotland,
a. Physiology of polyploids of Rana temporaria L. (Amphibia. Anura)
DREYER, Miss M. V. B.Sc. — Dept of Zool.. Univ. of O.F.S., BLOEM-

FONTEIN, South Africa,
a. Epithelio-neural bodies in the Chick. Gallus bankiva (Aves)
DUBOIS, Mile F. Dr es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.

d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol.

generale. 12, Rue de l'Universite, STRASBOURG, France,
a. Migration des neoblastes dans la regeneration chez les Planaires. Fac-

teurs qui declanchent cette migration. Euplanaria lugubris (Plathelmin-

thes. Turbellaries, Triclades)
DUSHANE, G. Ph. Dr, Prof. — Dept of Biol., Stanford Univ., PALO

ALTO, Cal., U.S.A. (no data received)

DUYKER— de BEER, A. S. Mrs — Zool. Lab. der Rijks Univ., Janskerk-

hof 3, UTRECHT, Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with G. A. van ARKEL, Miss E. v. d. BROEK, Miss W. H.

T. van HEESCH, J. C. N. KOK, J. W. KUIPER, Miss R. P. van

LOO, G. D. NIJENHUIS, Miss J. E. SMIT and W. L. van

UTRECHT)
EAKIN, R. M. A.B., Ph.D., Prof. — Dept of Zool., Univ. of California,

BERKELEY 4, Cal., U.S.A.

a. Development of the amphibian pituitary. Study of independent or de-
pendent differentiation of the partes buccales and pars nervosa of the
pituitary. Hyla regilla. (assisted by Miss N. EATON, Miss E. OL-
DENBORG and W. THURMOND)

b. Survival of transplanted pituitaries in Amphibia (homoplastic and xeno-
plasty). Hyla regilla and Triturus torosus. (in collaboration with M.
HARRIS)

c. Studies in protein metabolism of amphibian embryo. II — Free amino
acids; III — Peptides; IV — Uptake of radioactive methionine. Rana
pipiens and Hyla regilla (in collaboration with W. E. BERG and
P. B. KUTSKY)

EALES, Miss N. B. D.Sc. — Dept of Zool., Univ., READING, Berkshire,

England.

(no data received over this year)
EASSA, Y. E. B.Sc. — Dept of Zool., Univ. of Sheffield, SHEFFIELD,

England, (in a study-leave from Farouk I Univ., ALEXANDRIA,

Egypt)
a. Change of musculature in the heads of larva, pupa and imago and

development of imaginal buds of the mouthparts in Pieris brassicae

(Linn.). (Insecta)
EAYRS J. T. B.Sc. — Dept of Anat, The Med. School, Birmingham Univ.,

Edgbaston, BIRMINGHAM 15, England.

a. Factors involved in the disjunction of the eyelids. Rodents (Mammals)

b. The influence of sex hormones on maturation behaviour. Rodents
EBERT, J. D. Ph.D. — Dept of Biol., Massachusetts Inst, of Technology,

CAMBRIDGE 39, Mass., U.S.A.
a. Investigating the ontogeny of tissue antigens by immunological tech-
niques. Chick (Birds)

Ebert 28 Es

b. Investigating the time and manner of origin, and role of vitamins in
the early blastoderm. Chick (Birds)
EDDS Jr. M. V. S.A.. M.A., Ph.D. — Dept of Biol., Brown Univ.,
PROVIDENCE 12, R.I., U.S.A.

a. Study of factors influencing the spreading of intact axons in partially
denervated muscles. (Vertebrates)

b. Study of factors influencing the diameter of nerve fibers. (Vertebrates)
EDGAR, G. W. F. Med. drs — Anat.-Embryol. Lab. der Rijks Univ.,

Janskerkhof 3, UTRECHT, Holland,
a. Investigations into the lipidchanges in the central nervous system of the

growing rabbit compared with the normal and pathological development

of the myelin sheath. Lepus cuniculus (Mammalia)
EDWARDS, L. F. B.A., M.Sc, Ph.D., Prof. — Dept of Anat., Ohio State

Univ., COLUMBUS 10, Ohio, U.S.A. (no data received over this year)
EEDEN J. A. van M.Sc. — Dept van Dierk., Potchefstroom Univ., POT-

CHEFSTROOM, Suid-Afrika. (stud: Sool. Inst., STELLENBOSCH)

a. Ontogenesis of the skull of Ascaphus truei. (Amphibia)

b. Ontogenesis of the skull and visceral muscles of Xenopus laevis till the
beginning of metamorphosis. (Anura, Amphibia) (Normal Table)

EGMOND, Miss M. T. C. van — Zool. Lab. der Rijks Univ., Janskerkhof 3,
and Hubrecht Lab., Janskerkhof 2, UTRECHT, Holland.

a. Centrifugation of cleavage stages. Limnaea stagnalis (Gastropoda) (in
collaboration with F. J. VERHEYEN)

b. Experimental analysis of the neurulation process in Xenopus laevis.
(Anurans) (in collaboration with P. D. NIEUWKOOP)

ELOFF, F. C. D.Sc. —Zool. Inst., Fac. of Sci., Univ. of Pretoria, PRE-
TORIA, South Africa.

a. Morphological investigation of the organ of Jacobson and the nasal-
floor cartilages in an embryo of Galago senegalensis, the African night-
ape. (Mammalia)

b. Observations on the chondrocranial roof of certain rodents. (Mammalia)
ELSHOUT, Miss A. M. Arts — Anat.-Embryol. Lab. of the Univ. of

Leyden, Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN,
Holland,
a. Listing and investigation of the historical collection of the Institute con-
taining a large number of embryological preparations. {Man and other
Vertebrates)
ELWOOD, M. A. B.Sc. — Dept of Embryol., Univ. Coll. London, Gower
Str., LONDON W.C. 1, England,
a. Quantitative studies on the early development of the nervous system
and associated structures. Amblystoma (Amphibia)
ENDO. Y. M.Sc. — Embryol. Section, Dept of Biol., Fac. of Sci., Tokyo
Metropolitan Univ., Meguro-ku, TOKYO, Japan,
a. A chemical study of the process of fertilization membrane formation in
sea-urchin eggs. Various species of Echinoidea
ENGLANDER, H. Dr med. et rer. nat. — Inst. f. Entw.physiol., Kerpener-
str. 13, KOLN-Lindenthal, Deutschland.
a. Regionale Induktion bei Urodelen.
ESPOSITO SEU MARGHERITA, Miss M. Dr — 1st. di Zool., Via Ar-
chirafi 18, PALERMO, Italia,
a. Hatching enzymes in Amphibians.

Ey 29 Fere

EYAL-GILADI, Mrs H. M.Sc. — Hebrew Univ.. JERUSALEM, Israel,
(at present working at Hubrecht Laboratory, UTRECHT, Holland)
a. Experimental analysis of the development of neural differentiation ten-
dencies during gastrulation and neurulation in Amphibians.

FABER, J. — Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2.
UTRECHT, Holland.

a. Description of , .normal stages" from fertilization till the end of meta-
morphosis (Normal Table). Xenopus laevis (Anurans)

b. Influence of different kinds of food on the development of Xenopus
laevis. (Anurans)

c. Description of the development of the pattern of chromatophores.
Xenopus laevis (Anurans) (Normal Table)

d. Normal development of the alimentary canal and digestive glands from
tail-bud stage till end of metamorphosis. Xenopus laevis (Anurans)
(Normal Table)

FANKHAUSER, G. Ph.D., Prof. — Dept of Biol.. Princeton Univ., PRIN-
CETON, N.J., U.S.A.

a. Cytological study of polyploidizing effect of heat and cold on fertilized
eggs, and of parthenogenetic cleavage induced by heat and cold treat-
ment of unfertilized eggs. Triturus viridescens (Amphibia)

b. Study of effects of triploidy on development of gonads. Triturus viri-
descens (Amphibia)

c. Study of the reactions of diploid and triploid larvae and metamorphosed
animals to pituitary hormones. Triturus viridescens (Amphibia)

d. Thyroidectomy in diploid and triploid embryos. Effects of thiourea, etc.
Triturus viridescens (Amphibia)

e. Study of progeny of triploid, tetraploid and other heteroploid individuals
among Axolotls. Ambly stoma mexicanum (Amphibia) (in collaboration
with R. R. HUMPHREY)

FARINELLA— FERRUZZA, Mrs N. Dr — 1st. di Zool., Via Archirafi

18, PALERMO, Italia,
a. Xenoplastic tail transplantations in Amphibians.
FAURE FREMIET, E. Dr, Prof. — Coll. de France, Place Marcelin

Berthelot, PARIS Ve. France. (no data received)

FAUTREZ, J. C. M.D., Prof. — Lab. of Anat., Fac. of Med., Univ. of

Gent, Bylokekaai 1, GENT, Belgium.

a. Experimental embryology of the otocyst and the microplacods of the
cranial nerves. (Amphibians)

b. Influence of ureum on the development. (Amphibians)
FAUTREZ— FIRLEFYN, Mvr. N. J. — Lab. of Anat., Fac. of Med., Univ.

of Gent, Bylokekaai 1, GENT, Belgium,
a. Descriptive and cytochemical embryology. Artemia salina (Phyllopoda)
FELDMAN, M. M.Sc. — Dcpt of Zool., The Hebrew Univ., JERUSALEM,
Israel,
a. The ontogenetic development of the chondrocranium, osteocranium and
cranial muscles in Pelobates syriacus. (Amphibia, Anura)
FELL. Miss H. Dr — Strangeways Res. Lab., CAMBRIDGE, England.

(no data received)
FEREMUTSCH, K. Dr Med. — Hirnanatom. Inst, der Psychiatr. Univ.-
klinik, Med. Fak.. Waldau. BERN, Schweiz.
a. Endhirnentwicklung, speziell der Rinde und Bauplan. Maus und Mensch

Ferr 30 Flex

FERREIRA, W. A. B.S. — Dept de Histol. y Embriol., Fac. de Med.,
MONTEVIDEO, Uruguay, S. America.

a. Neuro-embryology. Bufo arenarum (Amphibia)

b. Experimental analysis of the development of the heart. Bufo arenarum
(Amphibia) (in collaboration with R. E. GONZALEZ MARINO)

FILOGAMO, G. Dr — Inst, of human Anat., Corso Massimo d'Azeglio 52,
TORINO, Italy.

a. Study of the consequences of the removal of the secundary optic vesicle
on the organogenesis and histogenesis of the optic lobe. Chick (Aves)

b. Histogenesis of the nervous cells of the sympathetic nervous system of
the intestinal tract. Sheep (Mammals)

FISCHBERG, M. Dr Phil. — Genet. Lab., Anim. Breeding and Genet.
Res. Organ., Inst, of Anim. Genet., West Mains Rd, King's Buildings,
EDINBURGH 9, U.K.

a. Experimental heteroploidy and parthenogenesis in newts. Heteroploid
newt hybrids — developmental potentialities and expression of species
characters, sex determination. Triton alpestris and T. palmatus (Am-
phibia)

b. Heteroploidy in mammals. Spontaneous heteroploidy — analysis of
factors involved. Induced heteroploidy — methods of production. Via-
bility of polyploid embryos. Physiological embryology of polyploid
embryos. Mus musculus (in collaboration with R. A. BEATTY)

c. Transplantation of mammalian embryos. Mus musculus (in collaboration
with R. A. BEATTY)

FISCHER, Miss I. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37,

111., U.S.A.
a. Fate of tissue culture cells introduced into embryos after prolonged

cultivation in vitro. Gallus domesticus (Aves) (in collaboration with

P. A. WEISS)
FISK, A. M.Sc. — St Mary's Hosp., Med. School, Norfolk Place, Pad-

dington, LONDON W. 2, England.

a. The development of the ear and associated structures in the Lamprey.

b. The development of parachordals and trabeculae in the Lamprey.
(Cyclostomes) (in collaboration with Miss M. TRIBE)

c. A critical note on the development of the Vertebrate kidney, (in col-
laboration with Miss M. TRIBE)

FITZGERALD, L. R. Ph.D. — Univ. of Tennessee, Fac. of Biol. Sci.,
Med. Div., MEMPHIS 3, Tenn., U.S.A.

a. Development of enzymes in grasshopper egg and embryo. Melanoplus
differentialis (Orthoptera)

b. Enzyme activities of embryo and extra-embryonic membranes of chick
and rat. (Aves and Mammalia)

FLEMING, W. R. B.S. — Physiol. Lab., Coll. of Sci., Univ. of Portland,

PORTLAND 3, Ore., U.S.A.
a. Investigation of the chemical nature of the fertilization membrane.

Strongylocentrotus purpuratus (Echinoderms)
FLEXNER, L. B. B.S., M.D. Member — Dept of Embryol., Carnegie Inst.

of Washington, Wolfe and Madison Strs, BALTIMORE 5, Md, U.S.A.

a. Enzyme activities in fetal liver and cerebral cortex. Cavia cobaya (Mam-
malia)

b. Placental transfer using radioisotopes. Cavia cobaya (Mammalia)

Fli 31 Fr

FLICKINGER, R. A. Ph.D.. Prof. — Dept of Zool., Univ. of Pennsylvania.

PHILADELPHIA 4, Pa, U.S.A.

(no data received over this year)
FONSECA SACARRAO, G. da Lie. e Ci. — Museo Bocage da Fac. d. Ci..

Univ. de LISBAO, Portugal.

(no data received over this year)
FRANCESCHINI, M. M.D. — Inst, of human Anat.. Fac. of Med., Corso

Massimo d'Azeglio 52, TORINO, Italy.
a. Quantitative studies on the epiphyseal lines of long bones during body's

postnatal growth. Homo (Mammalia)
FRANCHI. C. M. B.S. — Dept of Histol. y Embriol., Fac. de Med.,

MONTEVIDEO, Uruguay, S. America,
a. Prospective organ-forming areas in the chick and rabbit blastoderms.

(Aves and Mammalia) (in collaboration with W. BUNO)
FRANCIS, E. T. B. B.Sc, Ph.D., Dr — Dept of Zool., Univ. of Sheffield,

SHEFFIELD, England,
a. The development and histogenesis of the conducting system of the

mammalian heart. (Sheep) (in collaboration with F. DAVIES, Dept

of Anat.)
FRAPPIER, J. B.A., M.D., Prof. — Dept d'Histol. et d'Embryol., Univ.

de Montreal, 2900, Boulevard du Mont Royal, MONTREAL, Canada.

a. Role de la vitamine E dans la reproduction. Rat et Souris (Mammiferes)

FRASER, A. S. B.Sc, M.Sc. — Genet. Lab., Anim. Breeding and Genet.

Res. Organ., Inst, of Anim. Genet., West Mains Rd, King's Buildings,

EDINBURGH 9, U.K.

a. Development and morphology of hair and skin mutants, particularly
the mimic hairwaving genes. Mus musculus (Mammalia)

b. Compatibility reactions to transplantation of skin between the RIII and
C 57 inbred lines, and their F x . Mus musculus (Mammalia)

c. Development and morphology of hair mutants, particularly the Rex and
Angora genes. Lepus caniculus (Mammalia)

FRASER, Miss E. A., D.Sc. — Dept of Zool. and comp. Anat., Univ. Coll.
London, Gower St, LONDON W.C. 1, England.

a. The development of the mesonephros after unilateral removal of the
pronephros. Lampetra planeri (Cyclostomata)

b. Development of the kidney in Echidna and Platypus. (Monotremata)
FRICK. H. Dr med., — Dr Senckenberg. Anat. Inst., Med. Fak. der Univ.

Frankfurt/Main, Ludwig Rehnstr. 14, FRANKFURT/Main Siid,
Deutschland.
a. C/i/roprerenplacenta. Roussetus und Rhinolophus (Mammalia)
FRILLEY, M. Dr es Sc. — Lab. d'Embryol. du Lab. Pasteur de l'lnst. du
Radium, 26, Rue d'Ulm. PARIS Ve, France.

a. Etude des capacites de developpement des differentes parties de l'ap-
pareil genital des embryons, apres destruction des ebauches de l'hypo-
physe et des glandes genitales. (Mammiferes) (en collaboration avec
A. RAYNAUD)

b. Recherches sur le developpement embryonnaire de la glande mammaire
de la Souris. (Mammiferes) (en collaboration avec A. RAYNAUD)

FROUD, M. D. B.Sc. — Wye Coll., Univ. of London. ASHFORD, Kent,
England,
(no data received over this year)

Gai 32 Gennaro

GAILLARD, P. J. Dr Med., Prof. — Lab. for Exper. Histol., Fac. of Med.,
Univ. of Leyden, Wassenaarseweg, Boerhaavekwartier, LEIDEN,
Holland.

a. Developmental potencies of the human fetal germinal epithelium in
explants. (Mammalia)

b. Primary genesis of thyroid follicles in explants and factors governing
colloid formation. Gallus domesticus (Aves)

GALINSKY, I. Dr — Dept of Anat., Coll. of Med., Baylor Univ., 1200
M.D. Anderson Blvd, Texas Med. Center, HOUSTON 5, Tex..
U.S.A.
a. Investigation of transplantability of the Brown-Pearce tumor, utilizing
the yoke sac of chicks and the anterior ocular chamber of rabbits. Mor-
phological changes will be studied, and as well the effect on the tumor
of various chemical agents will be studied. (Aves and Mammalia) (in
collaboration with B. L. NEWTON)

GALLERA, J. Ph.D. — Inst. d'Histol., Fac. de Med., LAUSANNE, Suisse.

a. Transplantation of prechordal material. Triturus (Urodela)

b. Incubation of chick eggs under modified atmospheric conditions. Gallus
(Aves)

c. Experimental researches on the late inductive influence of the prechordal
plate and notochordal material on the development of the eyes of
Triton. (Urodela)

d. Transplantations of notochordal material of different ages. Triturus

e. The influence of heart extracts on development of the cardiac primordium
of the chick cultivated in vitro. Gallus (Aves)

GALLIEN, L. Dr es Sc. — Lab. de Biol. anim. (P.C.B. section II), Fac.

des Sci., Univ. de Paris, 12, Rue Cuvier, PARIS Ve, France,
a. fitude de Taction des hormones sexuelles dans l'embryogenese sexuelle

des Amphibiens. Discoglossus pictus et Pleurodeles waltlii
GARBER, Mrs B. — Dept of Zool., Univ. of Chicago, CHICAGO 37,

111., U.S.A.
a. Quantitative determination of cell shape in tissue culture. Gallus do-
mesticus (Aves) (in collaboration with P. A. WEISS)
GARRETT, F. D. Ph.D., Prof. — Dept of Anat., Ohio State Univ.,

COLUMBUS 10, Ohio, U.S.A. (no data received over this year)

GAZDA. A. — Zaklad Anat. Porownawczej U.J. im. H. Hoyera, KRAKOW,

sw. Anny 6, Poland,
a. The respiratory vessels of the yolk sac in the trout. (Pisces)
GEIGY, R. Dr, Prof. — Schweiz. Tropeninstitut, Socinstr. 57, u. Zool.

Anstalt der Univ., Rheinsprung 9, BASEL, Schweiz.

a. Endokrine Abhangigkeit der Metamorphose von Sialis lutaria. (Insecta)

b. Analyse der sogenannten genitalen Infektion bei der afrikanischen
Ruckfallfieberzecke, Otnithodorus moubata. (Atachnoidea)

c. Einfluss der Temperatur auf die ..Infektibilitat der Gelbfiebermucke.
Aedes aegypti, gegemiber Vogelmalaria. (Insecta)

GENNARO, Jr J. F. M.S. — Dept of Biol. Sci., Univ. of Pittsburgh,
PITTSBURGH 13, Pa, U.S.A.
a. The distribution of radio-phosphorous (P 32 ) in the developing embryos
of Rana sylvatica and Rana pipiens as demonstrated by radioautographic
methods. (Early cleavage to completed operculum) (Amphibia, Anuva)
(in collaboration with Miss E. J. RIDLEY)

Gennaro 33 Gode

b. The distribution of radio-phosphorous (P 38 ) in metamorphosing larvae
of R. sylvatica and R. pipiens as shown by radioautographs. (From
complete operculum through the larval change) (Amphibia, Anura)
(in collaboration with Miss E. J. RIDLEY)

c. The stages and normal development of metamorphosing R. sylvatica
larvae under natural conditions. (Compared to animals grown in
"standard" laboratory environment) (Amphibia, Anura) (in collabo-
ration with Miss P. WIRTH and D. B. GOODMAN)

d. The effect of X-irradiation on tail resorption in .Anura. (Resorption of
tail irradiated entirely and in isolated areas) R. clamitans (in colla-
boration with Miss P. WIRTH)

e. Cholesterol levels in anuran larvae throughout the metamorphic change.
R. sylvatica (Amphibia, Anura) (in collaboration with D. B. GOOD-
MAN)

GHIRETTI, F. Dr Nat.Sc. — Zool. Stat., NAPLES, Italy.
(no data received over this year)

GILBERT, Miss C. M.Sc. — Dept of Zool., Univ. of the Witwatersrand,
Milner Park, JOHANNESBURG, South Africa,
a. A study of the early development (somite stages) of Elephantulus myurus
jamesoni with special reference to the landmarks in organization. (Mam-
malia)

GILCHRIST, F. G. Dr, Prof. — Lewis and Clark Coll., PORTLAND,
Ore., U.S.A.
(no data received)

GILLMAN, J. Prof. — Dept of Anat, Univ. of the Witwatersrand, JO-
HANNESBURG, South Africa,
a. Embryology in baboon. (Mammalia)

GIROUD, A. Prof. — Lab. d'Embryol., Fac. de Med., 15, Rue Ecole de
Med., PARIS Vie, France.

a. Developpement de l'encephale et specialement du diencephale. Etude
structurale en rapport avec l'apparition des fonctions. Rat (Mammiferes)

b. Recherches sur l'influence teratogene des avitaminoses maternelles. Rat
(Mammiferes)

c. Recherches sur l'influence teratogene des intoxications maternelles.
Femme et rat (Mammiferes)

d. Etude des cas teratologiques individuels. Homo (Mammiferes)
GLIMSTEDT, G. Med. Dr, Prof. — Tornblad-lnst. of comp. Embryol..

Anat. Dept of the Univ. of Lund, LUND, Sweden.

a. Development of the ceruminous glands. (Birds) (team-work with P.
HALL)

b. Methods for studying the histochemistry of the foetes with isotopes.
(Mammals) (team-work with R. HAKANSSON)

GLOOR, H. Ph.D., P.D. — Zool.-vergl. Anat. Inst., Naturw. Fak.. Univ.
Zurich, Kunstlergasse 16, ZURICH 6, Schweiz.
a. Effects of chemicals on morphogenesis in Drosophila melanogaster :
(Insecta)
GODET, R. — Lab. de Biol. anim. (P.C.B. section II), Fac. des Sci., Univ.
de Paris, 12, Rue Cuvier, PARIS Ve, France,
a. Action des hormones sexuelles dans l'embryogenese du tractus genital
et des gonades chez les Insectivores. Talpa europaea L.

Godi 34 Gdszwald

GODINA, G. Prof. — Inst, of human Anat, Corso Massimo d'Azeglio 52,
TORINO, Italy.

a. Study of the histogenesis of the various layers of the cortex of the
different areas of the brain during embryonic and fetal development.
(Golgi's method and Nissl staining). Sheep (Mammals)

b. Development of neurons and glia cells in the cerebral cortex. Sheep
(Mammals)

c. Development of the regulatory mechanism of the blood flow in large
arteries. Pig (Mammals)

GODLEWSKI, H. G. Med. Dr — Inst, of Histol. and Embryol.. Med.

Acad., GDANSK, Poland,
a. The ultraviolet- and X-rays influence on spermatozoa under various

experimental conditions. Rana temporaria (Amphibia)
GOLDSMITH, E. D. Dr, Prof. — Dept of Histol., Coll. of Dentistry,

New York Univ., 477, First Ave, NEW YORK 16, N.Y., U.S.A.

(no data received)
GONTCHAROFF, Mile M. Lie. es Sc. — Lab. devolution des etres

organises, Fac. des Sci. de Paris, 105 Boulevard Raspail, PARIS Vie,

France.

a. General investigations. Partial regeneration of head. (Nemertinea,
Lineidae)

b. Spermatogenesis, ovogenesis and oviposition. (Lineidae, Vermes)
GONZALEZ MARINO, R. B.S. — Dept de Histol. y Embriol., Fac. de

Med., MONTEVIDEO, Uruguay, S. America.

a. Experimental study of the development of the heart. Bufo arenarum
(Amphibia) (in collaboration with W. A. FERREIRA)

b. Sites of lipase activity in the chick embryo. (Aves)

(together with the related work of W. BUNO and Miss J. ALVAREZ
GUTIERREZ)
GOODHART, C. B. M. A. — Dept of Zool., Downing St, CAMBRIDGE.
England.

a. The nature and mode of action of the evocator in Amphibia.

b. The motive power behind morphogenetic movements. (Amphibia)

c. Resemblances between regenerative and embryonic growth, and
malignant tumours. (Amphibia)

d. Physiology of vertebrate development.

GOODMAN, D. B. B.S. — Dept of Biol. Sci., Univ. of Pittsburgh, PITTS-
BURGH 13, Pa, U.S.A.

a. The stages and normal development of metamorphosing R. sylvatica
larvae under natural conditions. (Compared to animals grown in
"standard" laboratory environment). (Amphibia, Anura) (in collabora-
tion with Miss P. WIRTH and J. F. GENNARO Jr.)

b. Cholesterol levels in anuran larvae throughout the metamorphic change.
R. sylvatica (Amphibia, Anura) (in collaboration with J. F. GEN-
NARO Jr.)

GOODRICH, H. B. B.S., M.A., Ph.D., Prof. — Dept of Biol., Shanklin

Lab., Wesleyan Univ., MIDDLETOWN, Conn., U.S.A.

(no data received over this year)
G5SZWALD, K. Dr Phil., Dr Lubil. rer. nat., Prof. — Zool. Inst, der

Univ. Wurzburg, Naturw. Fak., Rontgenring 10, WtiRZBURG,

Deutschland.

Gdszwald 35 Grob

a. Embryologische Studien an Ameisen. Formica rufa und andere Arten.

b. Determination der Ameisen-Kasten. Formica rufa, Lasius niger u.a.
(Formicidae)

c. Parthenogenese. (Formicidae)

d. Kiinstliche Begattung. Verschiedene Lepidoptera, Coleoptera, Hymeno-
ptera (Arthropoda)

GOTHIE, Miss S., Dr Med., Dr es Sc. — Lab. d'Hormonol. et Cytol. exper.,
Ecole des Hautes Etudes, Univ. Hopital Broca, III Rue L. M. Nordmann,
PARIS 13e, France.

a. Tensioactive substances and evocation. (Mammals) (in collaboration
with R. MORICARD)

b. Cinematography: cleavage in Pleurodeles. (Amphibians) (in collabora-
tion with R. MORICARD)

GOTO, T. M.A. — Biol. Inst, of Keio Univ., Hiyoshi, Kohoku. YOKO-
HAMA, Japan,
a. Studies on the pterin substances upon the development of Bombyx movi
and Rana nigromaculata. (Insecta and Amphibia)

GRAUMANN, W. Dr Med. — Anat. Inst, der Univ., Burgstr. 51, GOT-
TINGEN, Germany,
a. Histotopographie der Knochenentstehung im Bindegewebe. Homo (Mam-
malia)

GREEN, Mrs E. U. Ph.D. — Lankenau Hosp. Res. Inst, and Inst, for
Cancer Res., Burholme Ave Fox Chase, PHILADELPHIA 11, Pa.,
U.S.A.

a. Cytological and cytochemical studies on arrested partial blastulae lacking
functional chromosomes. Rana (Amphibia) (in collaboration with R.
W. BRIGGS and T. KING)

b. Morphological, cytological and cytochemical studies of the effects of
carcinogen-protein conjugates on cleavage and early development. Rana
(Amphibia)

GREEN, S. H. M.B., Ch.B. — Dept of Anat., The Med. School, Birmingham
Univ., Edgbaston, BIRMINGHAM 15, England,
a. The study of oogenetic function. Monkeys and Ferrets (Mammals)
GREGG, J. R. Ph.D. — Dept of Zool., Columbia Univ., NEW YORK
City 27, N.Y., U.S.A.
a. Anaerobic metabolism of normal and hybrid amphibian gastrula explants.
Rana pipiens and R. pipiens x R. sylvatica
GREULICH, R. — Dept of Anat.. McGill Univ., MONTREAL, P.Q.,
Canada,
a. The development of bones and teeth as shown by radioautographs with
the help of radio-phosphorus and radio-carbon. (Vertebrates) (in colla-
boration with C. P. LEBLOND and L. F. BELANGER from Dept of
Histol. Univ. of OTTAWA)
GRIGNON, G. — Lab. d'Anat. et d'Histol.. Dept d'Embryol., Fac. de Med.,
Inst. Anat., 31, Rue Lionnois, NANCY (Meurthe & Moselle), France,
a. Developpement de 1'hypophyse. (Oiseaux)
GROBSTEIN, C. Ph.D. — Nat. Cancer Inst., Developmental Physiol. Unit.,
BETHESDA, Md, U.S.A.
a. The behavior of tissues from the early mouse embryo in tissue culture
and in the anterior chamber of the eye. (Mammalia)

Grod 36 Gustafson

GRODZlNSKI, Z. Prof. — Zaklad Anat. Porownawczej UJ. im. H.
Hoyera, KRAKOW, sw. Anny 6, Poland.

a. Physico-chemical properties of the yolk. Lacerta (Reptilia) and Gallus
(Aves)

b. Heart rate and temperature. Salmo (Pisces)

GRUENWALD, P. M.D., Asst Prof. — Dept of Pathol., State Univ. of
New York, Med. Center at New York, 451 Clarkson Ave, BROOK-
LYN 3, N.Y., U.S.A.

a. Embryonic development of selenium-induced malformations. Chick
(Aves)

b. Systematic investigation of current cases of prenatal disease and mal-
formation in autopsy material. (Part of "Brooklyn Survey of Neonatal
Pathology"). Man (Mammalia)

GRUNEBERG, H. Ph.D., M.D., D.Sc. — Dept of Genet., Univ. Coll.
London, Gower St, LONDON W.C. 1, England.

a. Developmental genetics of the mouse skeleton; mutant genes and natural
polymorphism of wild populations. Mus musculus (Mammalia)

b. Developmental genetics of the mouse skeleton; crosses between pure
lines, effects of major genes (short-ear, congenital hydrocephalus, fidget
and others). Mus musculus (Mammalia)

GRONTHAL, E. Dr — Hirnanatom. Inst, der Psychiatr. Univ.-klinik, Med.

Fak., Waldau, BERN, Schweiz.
a. Hirnentwicklung: Bauplan von Zwischenhirn und Endhirn. Huhn

(Vogel), Maus und Mensch (Saugetiere)
GUARDABASSI, A. Dr — Inst, of comp. Anat., Via Giovanni Giolitti 34,

TORINO, Italy.

a. Bilateral and unilateral removal of the ear vesicle to analyse the develop-
mental relationships between the latter and the lime sacs. Rana esculenta,
Bufo vulgaris (Amphibia) (in collaboration with Miss M. SACER-
DOTE)

b. Study of the course and connections of the retinal fibers following
rotation of the eye anlage in embryos of Bufo vulgaris and Rana esculenta.
(Amphibia)

c. Autoplastic interchange of the eye anlages (left to right and viceversa)
to study the course and arrangement of the retinal fibers. Rana esculenta,
Bufo vulgaris (Amphibia)

GUBBINS, J. F. A.B., M.A., Prof. — Dept of Biol., Gonzaga Univ., SPO-
KANE 11, Wash., U.S.A.
a. Comparative developmental morphology of dog skulls. Canis familiaris
(Mammalia)

GUILLON, G., — Lab. d'Hormonol. et Cytol. exper., Ecole des Hautes
Etudes, Univ. Hopital Broca, III Rue L. M. Nordmann, PARIS 13e,
France,
a. Oxydoreduction potential reduction of methylene blue in sperm.
(Amphibians) (in collaboration with R. MORICARD)

GUSTAFSON, T. Fil.lic. — Wenner-Grens Inst, for exper. Biol., Norrtulls-
gatan 16, STOCKHOLM 23, Sweden,
a. Continued studies on the protein chemistry of normal and lithium-
treated developing sea urchin eggs. (Studies on amino acids, peptides
and enzymes). Paracentrotus lividus, Psammechinus miliaris and other
sea urchins (Echinoderms)

Gustafson 37 Hale

b. Continued studies on the "dorsoventral" (oral-aboral) organization of

the unfertilized sea urchin egg. Echinocacdium cordatum and other sea

urchins (Echinoderms)
GUYfiNOT, E. Dr Med., Dr Sc. — Inst, de Zool. et Anat. comp., Univ.

de Geneve, Rue de Candolle, GENfiVE, Suisse.

(no data received over this year)
GYLLENSTEN, L. J. W. Med. lie. — Hist. Dept, Embryol. Dept, Karolinska

Inst., Solnavagen 1, STOCKHOLM 60, Sweden.

a. Development of the musculature of the urinary bladder of homo. (Mam-
malia)

b. Postnatal histogenesis of the lymphatic system under the influence of
experimental infections, exposures to X-ray and after thymectomy.
Guinea pig (Mammalia)

c. Functional and morphological neurogenesis in duplicitas experimentally
induced by implantation of a secondary dorsal blastoporal lip into the
ventral marginal zone of young gastrulae. Triturus, Xenopus (Amphibia)
(started at the Hubrecht Laboratory, Utrecht, Holland)

HADORN, E. Dr Phil., Prof. — Zool.-vergl. Anat. Inst., Naturw. Fak.,
Univ. Zurich 6, Schweiz.

a. Regeneration and differentiation of the notochord. Triton species
(Amphibia)

b. Merogony-experiments. Triton species (Amphibia)

c. Field organization of the genital imaginal disc. Drosophila species (In-
secta)

d. Developmental analysis of lethal factors. Drosophila species (Insecta)
HAFFEN, Miss K. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.

d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol,
generale, 12, Rue de l'Universite, STRASBOURG, France,
a. Etude du developpement et de la regression du mesonephros chez
l'embryon d'Or'seau. Gallus (Aves) (En collaboration avec Et. WOLFF)
HAGET, A. — Fac. des Sci. de Bordeaux, 40, Rue Lamartine, TALENCE
(Gironde), France,
a. Recherches experimentales sur le developpement des Insectes: Etude
des facteurs de la morphogenese embryonnaire.
HAGGQVIST, G. Prof. — Histol. Inst., Embryol. Dept, Karolinska Inst.,
Solnavagen 1, STOCKHOLM 60, Sweden,
a. Induction of polyploidy in frogs and mammals.
HAIJE, Miss S.C.A. — Hubrecht Lab., Internat. Embryol. Inst., Janskerk-
hof 2, UTRECHT, Holland,
a. The development of the pineal body in the chick. (Aves)
HAKANSSON, R. Tandlakare — Tornblad-Inst. of comp. Embryol., Anat.
Dept of the Univ. of Lund, LUND, Sweden,
a. Methodes for studying the histochemistry of the foetes with isotopes.
(Mammals) (team-work with G. GLIMSTEDT)
HALE, L. J. B.Sc. — Dept of Zool., Univ. of Edinburgh, West Mains Rd,
EDINBURGH 9, Scotland.

a. The growth of isolated scleral bone primordia as chorio-allantoic grafts
and in culture media. Gallus domesticus (Aves)

b. Histochemical studies on the early development of the scleral bone.
Gallus domesticus (Aves)

Hall 38 Hamm

HALL, E. K. M.D., Prof. — Dept of Anat., School of Med., Univ. of
Louisville, 101. West Chestnut Str., LOUISVILLE 2, Ky, U.S.A.
(no data received over this year)

HALL, P. Med.kand. — Tornblad-Inst. of comp. Embryol., Anat. Dept
of the Univ. of Lund, LUND, Sweden,
a. Development of the ceruminous glands. (Birds) (team-work with G.
GLIMSTEDT)

HALL, T. S. Ph.D., Assoc. Prof. — Dept of Zool., Grad. School of Arts
and Sci., Washington Univ., Lindell and Skinker Aves, ST LOUIS 5,
Mo., U.S.A.
a. Effect of chemical inhibitors on the development of amphibian eggs.
Rana and Amblystoma

HAMA, T. M.A., Dr — Biol. Inst, of Keio Univ., Hiyoshi, Kohoku, YOKO-
HAMA, Japan.

a. Morphogenetical and chemical analysis of the amphibian organizer.
Triturus pyrrhogaster

b. Pterins in the silkworm and their significance in biochemical genetics.
Bombyx mod (Insecta)

HAMBURGER, V. Ph.D., Prof. — Dept of Zool., Grad. School of Arts
and Sci., Washington Univ., Lindell and Skinker Aves, ST LOUIS 5,
Mo., U.S.A.

a. Control of proliferation and differentiation of the nervous system.
Chick (Aves) (in collaboration with R. LEVI-MONTALCINI)

b. Response of embryonic nervous system to implantation of mouse tumors.
Chick embryo (Aves) (in collaboration with Miss R. LEVI-MONTAL-

c. Stage series of chick embryo. (Aves) CINI)
HAMILTON, H. L. Ph.D., Prof. — Dept of Zool. and Entomol., Div. of

Sci., Iowa State Coll., AMES, Iowa, U.S.A.

a. Revision of Dr Frank R. LILLIE's textbook of embryology. "The
Development of the Chick". Gallus domesticus (Aves)

b. Experiments on the visceral pouches of the chick to ascertain their
derivatives and especially the origin of the parathyroids. Gallus domes-
ticus (Aves) (in collaboration with Miss J. SCHRIER)

HAMILTON, W. J. Prof. — Anat. Dept, Charing Cross Hosp. Med. School,
62, Chandos Place, LONDON W.C. 2, England.

a. Investigation on the growth and histology of the placentae in situ from
the third month until term. Homo (Mammalia) (in collaboration with
}. D. BOYD)

b. Growth and atresia o fthe ovarian follicles of the ferret. (Mammalia)
(in collaboration with R. J. HARRISON)

c. The development of the hamster for the first seven days of pregnancy.

d. Histology of the oestrus cycle of the goat. (Mammalia) (in collaboration
with R. J. HARRISON)

HAMMOND, W. S. Ph.D., Prof. — Dept of Anat, School of Med., State
Univ. of New York, SYRACUSE, N.Y., U.S.A.

a. Development of the autonomic nervous system. Gallus domesticus (Aves)
(in collaboration with C. L. YNTEMA)

b. Differentiation of sensory neurons. Gallus domesticus (Aves)

c. Development of the thymus. Gallus domesticus (Aves)

d. Effects of sulfa drugs on mammalian embryo. Mus musculus (in colla-
boration with C. L. YNTEMA)

Hamp 39 Harr

HAMPfi, A. Lie. es Sc. — Lab. de Zool. de la Fac. des Sciences et Lab.
d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de
Biol, generate, 12, Rue de l'Universite, STRASBOURG, France,
a. Effet de faibles doses d'hormones femelles sur le developpement de
testicule de poulet. Difference entre la premiere et la deuxieme poussee
de cordons sexuels, prolongation experimentale de la premiere poussee.
Gallus (Aves) (En collaboration avec Et. WOLFF).

HANSON, E. J. Ph.D. — M.R.C. Biophysics Res. Unit, King's Coll., Strand,
LONDON W.C. 2, England.

a. Spermatogenesis of Vivipara vivipara, studied by classical techniques
and by phase-contrast, polarised light, ultra-violet and electron micro-
scopy. (Gastropoda) (in collaboration with J. T. RANDALL and
S. T. BAYLEY)

b. Cytogenesis of vertebrate striped muscle, studied in the electron mi-
croscope, and with the aid of tissue culture techniques, (in collaboration
with J. T. RANDALL and S. T. BAYLEY)

HARDE, ... Dr — Zool. Inst, der Westfalischen Landes-Univ., Robert

Koch Str. 31, MONSTER, Westf., Deutschland.

(no data received over this year)
HARDY, Miss M. H. M.Sc, Ph.D. — Commonwealth Sci. and Industr.

Res. Org., McMaster Anim. Health Lab., Parramatta Rd, GLEBE,

N.S.W., Australia. (Guest-worker from C.S.I.R.O., Wool. Biol. Lab.,

17 Randle St, SYDNEY, N.S.W.)

a. Induction of hair follicle formation. Mouse and sheep (Mammals) (in
collaboration with Miss P. DAVIDSON)

b. Pigmentation processes in skin and hair in tissue culture. Mouse (Mam-
mals) (in collaboration with Miss P. DAVIDSON)

c. Histochemistry of hair follicle development in vivo and in vitro
— nucleic acids, phosphatases, sulfhydryl groups. Mouse and sheep

HARKMARK, W. cand. Med. — Anat. Inst., Univ., OSLO, Norway.
a. Morphological and experimental investigation of the pontine and inferior

olivary nuclei in birds. Gallus domesticus
HARRIS, M. A.B., Ph.D., Prof. — Dept of Zool., Univ. of California,

BERKELEY 4, Cal., U.S.A.
a. Survival of transplanted pituitaries in Amphibia (homoplastic and xeno-

plastic). Hyla regilla and Triturus torosus (in collaboration with R.

M. EAKIN)
HARRISON, R. G. M.D., Ph.D., Sc.D., L.L.D., Prof. (Emer.) — Osborn

Zool. Lab., Yale Univ., NEW HAVEN 11, Conn., U.S.A.

a. Development of limbs of Amphibia with reference to the roles played
by ectoderm and mesoderm. Amblystoma, various species.

b. Induction and symmetry relations in the development of the internal
ear. Amblystoma punctatum (Amphibia)

HARRISON, R. J. M.A., D.Sc, M.B.B.Chir. — Anat. Dept, Charing Cross
Hospital Med. School, 62, Chandos Place, LONDON W.C. 2, England.

a. Early development. (Mammals)

b. Changes in the ovary. (Mammals)

c. Growth and atresia of the ovarian follicles of the ferret. (Mammals)
(in collaboration with W. J. HAMILTON)

d. Histology of the oestrus cycle of the goat. (Mammals) (in collaboration
with W. J. HAMILTON)

Hart 40 Hee

HARTMANN, J. F. Ph.D., Prof. — Inst, of Anat., School of Med., Univ.

of Minnesota, MINNEAPOLIS 14, Minn., U.S.A.

(no data received over this year)
HARTUNG, E. W. Ph.D. — Dept of Zool., Rhode Island State Coll.,

KINGSTON, R.I., U.S.A.
a. Factors influencing tumor incidence in Drosophila melanogaster. A study

of the developmental, environmental, and genetic factors operative in

the development of so-called "melanin tumors" in the fruit fly. (Insecta)
HARTWIG, H. Dr Phil. — Inst. f. Entw.physiol., Kerpenerstr. 13, KOLN-

Lindenthal, Deutschland.
a. Analyse der einzelnen unter dem Einfluss des Schilddriisenhormons

erfolgenden Differenzierungs- bzw. Reduktionsvorgange. (Vertebraten)
HARVEY, Mrs. E. B. A.B., M.A., Ph.D., Dr — Dept of Biol., Princeton

Univ., PRINCETON, N.J., U.S.A.

a. Centrifuging eggs, and development of fractions obtained by centrifugal
force. Parthenogenetic merogony. (Echinodermata)

b. Monograph on Arbacia punctulata, including classified compilation of
all experimental work. (Echinodermata)

HASEGAWA, M. M.A. (Rigakushi) — Biol. Inst., Fac. Sci., Nagoya Univ.,
Chigusa-Ku, NAGOYA, Japan.

a. Restitution des Auges bei Misgurnus fossilis. (Pisces)

b. Restitution des Auges nach sukzessiver Entfernung von einzelnen Augen-
haute. Tritutus pyrrhogaster (Amphibia) (unter Mitwirkung von
T. SATO)

c. Linsenregeneration bei Misgurnus fossilis. (Pisces) (unter Mitwirkung
von T. SATO)

HAY, Mile D. Lie. es Sc. — Lab. de Zool. de la Fac. des Sciences et Lab.
d'Embryol. et Teratol. exper. du C.N.R.S., Inst, de Zool. et de Biol,
generate, 12, Rue de l'Universite, STRASBOURG, France,
a. Etude des Free-Martins chez les Bovides. Bos taurus (Mammalia)
HAY, E. D. — Dept of Zool., Univ. of Illinois, URBANA, III, U.S.A.
a. Contribution of epidermis to the amphibian limb regeneration blastema
as demonstrated by transplantation of heteroploid epidermis.
HAYES, E. R. Ph.D., Prof. — Dept of Anat., Ohio State Univ., COLUM-
BUS 10, Ohio, U.S.A. (no data received over this year)
HEATH, H. D. — Dept of Biol. Sci., Stanford Univ., STANFORD, Cal.,
U.S.A.
a. Experiments to test the ectodermal origin of the cells of the regeneration
blastema of the limb. (Amphibians)
HEAYSMAN, Miss J. E. M., B.Sc. — Queen Mary Coll., Univ. of London,
Mile End Rd, LONDON E. 1, England,
a. Some of the factors involved in the development of the shell in Helix
pomatia, Paludina vivipara, Nucella lapillus. (Mollusca)
HEESCH, Miss W. H. T. van — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT, Holland.

a. Development of head. Pleuronectes (Teleostei)

b. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in col-
laboration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER, J. C. N. KOK, J. W. KUIPER, Miss R. P.
van LOO, G. D. NIJENHUIS, Miss J. E. H. SMIT and W. L. van
UTRECHT)

j-j e j 41 Herrmann

HEILBRUNN, L. V. Ph.D., Prof. — Dept of Zool., Univ. of Pennsylvania,
PHILADELPHIA 4, Pa, U.S.A.
(no data received over this year)
HEIMANN, H. Dr Med. — Hirnanat. Inst, der Psychiatr. Univ.-klinik,
Med. Fak., Waldau, BERN, Schweiz.
a. Endhirnentwicklung. (Teleostier)
HEMMINGS, W. A. B.A. — Dept of Zool., Univ. Coll. of N. Wales,
BANGOR, Caernarvonshire, Great Britain,
a. Study of the immunological relations of mother and foetus in mammals.
HENDERSON, Miss M. B.Sc. — Dept of Zool., Univ. Coll. of N. Wales,
BANGOR, Caernarvonshire, Great Britain,
a. Immunological relations of mother and young in mammals. Rabbit
HENKE, K. Dr Phil., Prof. — Zool. Inst, der Univ. Gottingen, Mathem.-
Naturw. Fak., Nikolausbergerweg 75, G6TTINGEN, Deutschland.
a. Embryonale und post-embryonale Entwicklungsgeschichte, Entwicklungs-
physiologie und Genetik bei Insekten und Vogel. (mit Mitarbeitern)
HENLEY, Miss C. Ph.D. — Dept of Zool., Univ. of North Carolina,
CHAPEL HILL, N.C., U.S.A.

a. An investigation of the cytological and morphological effects of low
temperature on fertilized eggs of the annelid, Chaetopterus pergamen-
taceus. (in collaboration with D. P. COSTELLO)

b. Studies on the effects of radioactive phosphorus on mitosis in epithelial
cells of Ambly stoma punctatum larvae. (Amphibia) (in collaboration
with D. P. COSTELLO)

HERLANT— MEEWIS, Mme H. Dr Zool. — Lab. de Zool., Fac. des Sci.,
Inst, de Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50, Av. F. D.
Roosevelt, BRUXELLES, Belgique.

a. Etude des lois de la scissiparite chez les Aeolosomatidae (Oligochetes
limicoles)

b. Etude histochimique et histophysiologique de la scissiparite chez les
Aeolosomatidae. Influence des facteurs externes et internes. Action des
substances de croissance: vitamines acides amines. (Oligochetes)

c. L'enkystement chez les Aeolosomatidae. Etude histochimique et histo-
physiologique du phenomene d'enkystement observe au Canada chez
differents Aeolosomatidae. (Oligochetes)

d. Etude des elements regenerateurs lors de la scissiparite et de la regene-
ration experimentale chez les Oligochetes.

e. La regeneration experimentale du germen chez Lumbricillus lineatus
(Enchytraeidae) Formation du germen a partir du soma, lors de la
regeneration des Oligochetes.

f. La gemmulation chez Suberites domuncula (Spongiaires) . Les gemmules
surtout caracteristiques des eponges d'eau douce, sont etudiees ici chez
une forme marine.

HERRICK, Ch. J. Dr, Prof. (Emer.) — Univ. of Chicago, 236, Morning

Side Drive, GRAND RAPIDS 6, Mich., U.S.A.
HERRMANN, H. Dr, Prof. — Univ. of Colorado, Med. Center, Dept of

Pediatrics, 4200 east Ninth Ave, DENVER 7, Col.. U.S.A.
a. Chemistry of muscle differentiation, determination of actin and myosin

and phosphate fractions in muscle of chick embryos after the 7th day

of development (concluded). (Aves) (in collaboration with B. J.

NEUKOM and M. J. SCHNEIDER)

Herrmann 42 Hill

b. Determination and fractionation of nucleoproteins and determination of
enzymes in chick somites from the 2nd to the 5th day of incubation and
in differentiating chick muscle from the 7th day of incubation to hatching.
(Aves) (in collaboration with B. J. NEUKOM and M. J. SCHNEIDER)

c. Chemical fractionation of cell nuclei and mitochondria of differentiating
muscle of chick. (Aves) (in collaboration with B. J. NEUKOM and
M. J. SCHNEIDER)

d. Histological examination of muscle development including quantitative
determinations of volume of somite columns, of cell number, and of
mitotic index of somites. (Aves) (in collaboration with B. J. NEUKOM
and M. J. SCHNEIDER)

e. Study of differentiation of chick somites in explants (Spratt technique).
(Aves) (in collaboration with L. LUBCHENCO, J. McKENZIE and
U. ROTHFELS)

f. Study of developmental disturbances related to nutritional deficiencies
investigated by application of anti-vitamins and anti-amino acids to the
intact egg and to explants (somites). In particular, it will be attempted
to define the factors which maintain the balance between myotome,
sclerotome and dermatome during differentiation of the somite and are
required for the normal development of the retina (possible connection
with retrolental fibroplasia of the premature human infant) (Aves)
(in collaboration with L. LUBCHENCO, J. McKENZIE and U.
ROTHFELS)

HERTIG, A. T. M.D., Prof. — Harvard Univ., Med. School., Dept of
Pathol., 25, Shattuck Str., BOSTON 15, Mass., U.S.A.

— Boston Lyinq - in Hospital, 221, Longwood Ave, BOSTON 15, Mass.,

U.S.A.

— Free Hospital for Women, 245, Pond Ave., BROOKLINE, Mass..

a. Development of Human ova from fertilization to 14 days (first missed
menstrual period). (Mammalia) (in collaboration with J. ROCK)

b. A morphologic description of 3 segmenting human embryos; a 2-cell tubal
ovum, a 30-cell early blastula (4 days-uterine), and a 60-cell blastula
(4 ]/2 — 5 days-uterine). (Mammalia) (in collaboration with J. ROCK)

HETTIG, R. A. M.D., Prof. — Dept of Anat., Coll. of Med., Baylor Univ.,
1200 M.D. Anderson Blvd. Texas Med. Center, HOUSTON 5, Tex.,
U.S.A.
a. The production of anomalies in tat embryos by nitrogen mustards. Mus
norvegicus (Mammalia)
HEUSER, C. H. Prof. (Emer.) — Dept of Anat., Univ. of Georgia, Med.
School, AUGUSTA, Ga, U.S.A.
a. Morphology of early human and other primate embryos. Homo, Pan,
Papio and Macaca rhesus
HEYN, C. B. Cand.Med. — Anat.-Embryol. Lab. of the Univ. of Leyden,
Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Permeability of the placenta in rat and Guinea pig. (Mammalia) (in col-
laboration with J. DANKMEIJER)
HILL, J. P. F.R.S., Prof. (Emer.) — Dept of Embryol., Univ. Coll. London,
Gower Str., LONDON W.C. 1, England. Private addr.: "Kanimbla".
Dollis Ave, Finchley, LONDON N. 3, England,
a. Studies in mammalian development, especially placentation. (Various
Mammalia)

Hille 43 Hog

HILLEMANN, H. H. M.A.. Ph.D., B.S. — Dept of Zool., Oregon State
Coll., CORVALLIS. Ore., U.S.A.

a. Sodium, potassium and magnesium in the developing hamster embryo.
Cricetus auratus (Mammalia)

b. Ossification of the internal and middle ear in the Golden Hamster.
Cricetus auratus (Mammalia)

c. Morphogenesis of the placenta of the Golden Hamster. Cricetus auratus
(Mammalia)

H1LLER, S. M.D. — Inst, of Histol. and Embryol., Med. Acad., GDANSK,

Poland,
a. Regeneration in Amphibians. The influence of inanition on that

phenomenon, (in collaboration with E. H. WISKONT and T.

KROTKIEWICZ)
HINTZSCHE, E. Dr Med., Prof. ord. — Anat. Inst., Biihlstr. 26, BERN,

Schweiz.

a. Anorganischer Stoffwechsel, Fermentchemische Untersuchungen.
Sauger. spez. Mensch

b. Experimented Studien iiber Zellvermehrung in Gewebekulturen. Ein-
wirkung fordernder und hemmender Substanzen. Huhn, Kaninchen und
Mensch (Aves und Mammalia)

HJELMMAN, G. M.D., Prof. — Dept of Anat., Fac. of Med., Univ. of
Helsinki, HELSINKI, Finland,
a. Appearence of the heparinocytes (Human and other mammalian em-
bryos ) .

HOADLEY, L. A.B., Ph.D., A.M., Prof. — Biol. Lab's, Harvard Univ.,
Divinity Ave, CAMBRIDGE 38, Mass., U.S.A.

a. Origin of pattern in the development of the nervous system. A study
of the temporal and spacial relations of differentiation in the central
nervous system. Gallus domesticus (Aves)

b. Systematic study of the history of the appearance of the nervous
elements and a study of the behavior in grafts (esp. composite).
(Vertebrates)

HOCHSTETTER, F. Dr, Prof. (Emer.) — Pokornygasse 23, WIEN

XIX/117, Osterreich.
HOFFMAN, H. B.A., M.A. — Dept of Zool., Univ. of California, LOS

ANGELES 24, Cal., U.S.A.
a. Occurence of alpha-beta globulins in the serum of the chick embryo.

(Aves)
HOGEWONING, C. H. — Lab. for Exper. Histol., Fac. of Med., Univ.

of Leyden, Wassenaarseweg, Boerhaavekwartier, LEIDEN, Holland.

a. Influence of vitamin D. on the calcification of developing bone-tissue
in explants. Gallus domesticus (Aves)

b. Influence of estrogens on the development and calcification of embryonic
endosteal tissue in vitro. Gallus domesticus (Aves)

HOGUE, Miss M. J. A.B., Ph.D., Assoc. Prof. — Dept of Anat., Univ.
of Pennsylvania, School of Med., PHILADELPHIA 4, Pa, U.S.A.
a. Study of neurons and glia cells from the different parts of the brain,
especially from the cerebellum. Also, the survival of neurons after death
of the fetus. Chick, human fetuses and newborn babes and adult monkey
rhesus and spider (Higher Vertebrates) (in collaboration with S. C.
WILLIAMS)

Hoi 44 Horn

HOLM, K. A. Dr Phil. — Uppsala Univ., Zool. Inst., UPPSALA, Sweden.
a. Experimental investigation of the spider embryo (determination, pros-
pective significance of embryonic areas). (Araneae, Arthropoda)
HOLMDAHL, D. E. Med. Dr, Prof. — Anat. Inst., Univ. Uppsala, UPP-
SALA, Sweden,
a. Untersuchungen iiber die friihe Korperentwicklung. (Vertebraten)
HOLMGREN, N. F. Dr Sc, Prof. (Emer.) — Zootom. Inst., Univ. of
Stockholm, 116, Drottninggatan, STOCKHOLM, Sweden,
a. Pronephros of Myxinoids. Myxine glutinosa, Heptatrema hexatrema
(Cyclostomata)
HOLST CHRISTENSEN, P. J. Dr Phil. — Univ. Inst, for Aim. Zool.,
Universitetsparken 3, COPENHAGEN 0, Denmark.

a. Studies on the embryology of Insects. Cochlidion limacodes (Lepido-
ptera)

b. Studies on the development of mammalian lungs. Talpa europaea (In~
sectivora)

HOLTER, H. Ph.D. — Cytochem. Dept, Carlsberg Lab., 8, Gl. Carls-
bergvej., COPENHAGEN Valby, Denmark.

a. Nature of physiological gradient in sea urchin embryos. Paracentrotus

b. Oxygen consumption at fertilization. Sea urchins ( Echinodermata)
HOLTFRETER, J. K. F. Ph.D., Prof. — Dept of Biol., Coll. of Arts and

Sci., Univ. of Rochester, ROCHESTER 3, N.Y., U.S.A.

a. Effects of carcinogens on successive developmental stages of amphibian
embryos. Amblystoma, Rana pipiens, Xenopus laevis (Anurans, Uro-
deles)

b. Chromatographic studies of amino acids in the eggs and embryos of
various species. Amblystoma, Rana, Xenopus (Amphibia) and many
Invertebrates

HOLTZER, H. Ph.B., B.S. — Dept of Zool., Univ. of Chicago, CHICAGO
37, 111., U.S.A.

a. Development of regional functional properties in the spinal cord, tested
by defect and transplantation experiments. (Amphibia, Urodela) (under
direction of P. A. WEISS)

b. Selectivity in outgrowth and terminations of embryonic nerves. (Verte-
brates) (under direction of P. A. WEISS)

HOOKER, D. Ph.D., Prof. — Dept of Anat., School of Med., Univ. of
Pittsburgh, PITTSBURGH 13, Pa., U.S.A.
a. Study of the physiological responses of human fetuses. (Mammalia)
HORI, R. — Biol. Inst., Fac. Sci., Nagoya Univ., Chigusa-Ku, NAGOYA,
Japan. ^

a. Oxidation-reduction pattern in early development of the fish. Oryzias
latipes
HORN, E. C. B.S., A.M., Ph.D., Prof. — Dept of Zool., Duke Univ.,
DURHAM, N.C., U.S.A.

a. Regeneration of lens from dorsal iris. Pseudacris nigrita feriarum
(Amphibia)

b. Organogenesis of developing ammocoetes and changes at metamorphosis.
Ichthyomyzon (species undescribed) (Cyclostomata) (in collaboration
with J. R. BAILEY)

c. A comparative study of amphibian skeletal changes through meta-
morphosis. Amblystoma maculatum, Pseudacris nigrita feriarum

Horn 45 Hultin

d. Experimental production of 4th arch anomalies in chick embryos. An
attempt is being made to determine some of the factors involved in the
disposition of aortic arches in birds as compared to mammals. Domestic
chick (Aves)
HORST, C. J. van der D.Sc, Prof. — Dept of Zool., Univ. of the Wit-
watersrand, Milner Park, JOHANNESBURG, South Africa.
a. Elephantulus myurus jamesoni going into anoestrus. (Mammalia)
HORST— ROLLHAUSER, Mrs J. ter Dr rer. nat. — Anat. Inst, der Univ.,
Robert Koch Str. 6, MARBURG/Lahn. Deutschland.

a. Induktionsleistungen abgetoteter Teile der Medullarplatte und des Ur-
darmdaches von Triton im Explantat. Abtotung durch Kochen und
Alkoholbehandlung, Explantieren in isoliertes Gastrula-Ektoderm nach
HOLTFRETER. Triton alpestris (Amphibia)

b. Reaktion verschieden vorbehandelten Gastrula-Ektoderms auf denselben
heterogenen Induktor. Behandlung der Gastrulae mit hormonen, NaF,
Butylalkohol u.a. Mit dem isolierten Ektoderm dieser Gastrulae werden
Stiicke erwachsener 7>iron-Leber umhiillt. Triton alpestris (Amphibia)

H5RSTADIUS, S. Fil. Dr, Prof. — Uppsala Univ., Zool. Inst., UPPSALA,
Sweden.

a. Determination in the sea urchin egg: Analysis of the gradients and the
processes behind them. Several species of sea urchins (Echinodevmata)

b. Determination within the head of the Axolotl. (Amphibia)
HOWORKA, E. J. M.D., Ph.D. — Histol. and Embryol. Inst, of the Acad.

of Med. Poznan, ul. Swiecickiego 6, Collegium Anatomicum, POZNAN,

a. Tissue-culture of human placental villi. (Primates) Poland.

b. Development of the placenta of Talpa europea. (Insectivora)

c. On the content of intervillous space of the human placenta. (Primates)
HUBER, W. Dr es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab. d'Em-

bryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol,
generate, 12, Rue de L'Universite, STRASBOURG, France,
a. Developpement de la tete. Etude morphologique et experimental de
developpement de la forme encephalique en rapport avec le crane; cour-
bure et redressement de la tete; position des yeux. Analyse de races
a forme encephalique aberrante. Gallus domesticus (Aves) (en colla-
boration avec Et. WOLFF)
HUBL, H. Dr rer. nat. — Zool. Inst, der Univ. Wiirzburg, Naturw. Fak.,
Rontgenring 10, WORZBURG, Deutschland.

a. Geschwulstproblem, bearbeitet durch Regeneration und Transplantation
an Lumbricus. (Annelida)

b. Einfluss des Colchicins auf die Regeneration bei Lumbricus und Tubifex.
(Oligochaten)

HUESTIS. R. R. Ph.D., Prof. — Biol. Dept, Univ. of Oregon, EUGENE,

Ore., U.S.A. (no data received over this year)

HUIJBERS, Mej. M. M. Med. doct. — Anat.-Embryol. Lab., Univ. van

Amsterdam, Mauritskade 61, AMSTERDAM O., Holland,
a. Investigations to the function of the gonad in the c/n'c/r-embryo by

castration experiments. (Aves)
HULTIN, J. M. T. Fil. lie. — Wenner-Grens Inst, for exper. Biol., Norrtulls-

gatan 16, STOCKHOLM 23, Sweden,
a. Nitrogen metabolism in early sea urchin development studied by means

of N-labelled ammonia. (Echinodevmata)

Hultin 46 Ig

b. Protein turnover of different cell fractions of chicken liver studied by
injection of N-labelled amino acids. The liver is afterwards homogenized
and fractionated by centrifugation. (Aves)

HUMMEL, Miss K. P. Ph.D. — Jackson Memorial Lab., Box 558, BAR
HARBOR, Me., U.S.A.
a. Studies on the form and function of ovaries which have been grafted
into spleens of castrates and subsequently retransplanted into normal
position within the ovarian capsule of a normal mouse. Offspring of
these ovaries are examined for abnormalities which may be correlated
with the time the graft remained in the spleen. Mus musculus (Mam-
malia) (in collaboration with C. C. LITTLE)

HUMPHREY, R. R. A.M., Ph.D., Prof. — Dept of Anat., School of Med.,
Univ. of Buffalo, 24, High Str., BUFFALO, N.Y., U.S.A.

a. Studies on spontaneous haploidy and polyploidy. Amblystoma (Siredon)
mexicanum (Amphibia)

b. The offspring of polyploids; their chromosome number, mortality, patho-
logy, etc. Amblystoma (Siredon) mexicanum (Amphibia)

c. Study of progeny of triploid and other heteroploid individuals among
axolotls. (Amphibia) (in collaboration with G. FANKHAUSER)

HUMPHREY, T. M.D., Ph.D. — Dept of Anat., School of Med., Univ.
of Pittsburgh, PITTSBURGH 13, Pa, U.S.A.

a. Cells and fibers in the developing nervous system. Homo sapiens
(Mammalia)

b. Pancreatic developmental studies. Homo sapiens (Mammalia)
HUNT, E. L. B.S., M.S., Ph.D. — Emory Univ., Dept of Biol., EMORY

UNIVERSITY, Ga., U.S.A.

a. Studies on affects of various added materials, particularly carbohydrates,
on morphology of chick embryos. Various types of domestic [owl (Aves)

b. Studies of regeneration of dermis and epidermis in amphibia under varied
conditions of temperature and chemical treatment. Triturus viridescens
viridescens

ICHIKAWA, M. Ph.D., Prof. — Lab. of Embryol. and Exp. Morphol.,
Zool. Inst, Dept of Sci., Kyoto Univ., KYOTO, Japan.

a. Hormonal mechanism of insect metamorphosis. Bombyx moti, Luehdotfia
japonica, Dictyoploca japonica (Lepidoptera) (in collaboration with
co-workers )

b. Development of limbs. Triturus pyrrhogaster (Amphibia)

c. Regeneration of the lens in Urodeles. Triturus and Hynobius (Amphibia)
IGLESIAS, R. M.D. — Dept de Med. Exper. del Servicio Nacional de

Salubridad, Av. Irarrazaval 849, SANTIAGO, Chile, South America.

a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts
in the spleen. Cavia cob. (Mammalia) (in collaboration with A. LIP-
SCHUTZ, S. BRUZZONE, Miss E. MARDONES and Miss M.
BARAKONA)

b. Influence of steroids on the gonadotrophic function of the hypophysis;
and on the follicular development of the ovary. Ovarian grafts in the
spleen; with the simultaneous action of steroids absorbed from beneath
the skin, or absorbed from the spleen; and other devices. Cavia cob.
(Mammalia) (in collaboration with A. LIPSCHUTZ, S. BRUZZONE,
Miss E. MARDONES and Miss M. BARAKONA)

Ik 47 Johns

IKUSHIMA, N. — Lab. of Embryol. and Exp. Morphol.. Zool. Inst., Dept
of Sci., Kyoto Univ., KYOTO, Japan.

a. Electric potential and pH of early embryo. Triturus pyrrhogaster
(Amphibia)

b. Redoxpotential of early embryo. Triturus pyrrhogaster and Rhacophorus
schlegelii (Amphibia)

IMMERS, J. Mag. rer. nat. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, STOCKHOLM 23, Sweden.

a. Biochemistry of fertilization, espec. on carbohydrates metabolism.
Echinus esculentus, Echinocardium cordatum, Paracentrotus lividus,
Strongylocentrotus droeb., etc. (Echinodermata)

b. Enzymatic destruction of jelly coat substances of the eggs. Echinocardium
cordatum. Echinus esculentus, Brisopsis lyr., etc. (Echinodermata)

INCE, Miss F. E. M.Sc. — Dept of Zool., Bedford Coll., Regents Park,
LONDON. England,
(no data received)

ISHIKAWA, M. M.A. (Rigakushi) — The Sugashima Marine Biol. Stat.,
Nagoya Univ., Sugashima-mura, Shima-gun, Mie-ken, Japan,
a. Physiological studies on the fertilization and parthenogenesis of the sea
urchin eggs. Strongylocentrotus pulchevrimus (Echinoidea) (in col-
laboration with M. SUGIYAMA)

JAFFE, L. F. B.S. — Dept of Embryol., Div. of Biol., California Inst, of
Technol.. PASADENA 4, Cal., U.S.A.
a. Separation, en masse, of early living sea-urchin blastomeres into size
groups, for physico-chemical investigations. Lytechinus pictus (Echinoi-
dea)

JAGER, K. W. — Anat.-Embryol. Lab., Oostersingel 69, GRONINGEN,
Holland,
a. Development of the internal structure of muscles (especially the m. triceps
surae). Homo (Mammalia)

JAGERSTEN, K. G. M. Fil. dr, Prof. — Uppsala Univ., Zool. Inst.,
UPPSALA, Sweden.
a. Larval development. (Polychaeta)

JANSEN, J. M.D. — Anat. Inst., Univ. of Oslo, OSLO, Norway.

a. Development of the inferior olive in Cetacea. Balaenoptera physalus

b. The morphogenesis of the cetacean cerebellum. Balaenoptera physalus
(Mammalia)

JANSSENS, J. — Lab. d'Embryol., Inst, de Zool., Univ. de Louvain, 71, Rue

de Namur, LOUVAIN, Belgique.
a. Development of the neural system of Balanoglossus kowalewskii. (En-

teropneusta) (in collaboration with G. VANDEBROEK)
JOHNELS, A. G. Phil. Dr — Zootom. Inst., Univ. of Stockholm, 116,

Drottninggatan, STOCKHOLM, Sweden.

a. Development and morphology of the skeleton of the head. Petromyzon
(Cyclostomes)

b. Observations on the connective tissue of the head. Petromyzon (Cyclo-
stomata)

JOHNS, B. A. E. M.B., Ch.B., M.R.C.P. — Dept of Anat., Fac. of Med..
Univ. of Sheffield. SHEFFIELD, England.

a. Development of the chondrocranium. Homo (Mammalia)

b. Development and histogenesis of oesophageal glands. Homo (Mammalia)

Johnson 48 Karczmar

JOHNSON, I. S. A.B. — Dept of Zool., Univ. of Kansas, LAWRENCE,
Kansas, U.S.A.

a. Serological ontogeny of heart proteins of the early chick embryo. (Aves)

b. An analysis of rabbit's blood after the inoculation of cardiac actomyosin
from Gallus domesticus. (Aves)

JOHNSON, Mychyle W. A.B., Ph.D., Prof. — Dept of Zool., Duke Univ.,
DURHAM, N.C., U.S.A.

a. A simplified technique for micro-electrocoagulation. Using a platinum
electrode and hyfrecator, accurate coagulation is controlled. Domestic
chick (Aves) (in collaboration with L. J. MANHOFF)

b. A simple micromanipulator, (in collaboration with L. J. MANHOFF)

c. Experimental production of pulmonary artery anomalies in chick embryos.
By electro-coagulation, it is possible to duplicate many spontaneously
occurring blood vessel anomalies. Domestic chick (Aves)

JONES, B. M. B.Sc. — Dept of Zool., Univ. of Edinburgh, West Mains Rd,
EDINBURGH 9, Scotland.

a. The development of the tissue canal, a skin reaction of the host to the
ectoparasitic mite Trombicula autumnalis Shaw. (Arthropoda)

b. The growth and development of the harvest mite, Trombicula autumnalis
Shaw. (Arthropoda)

c. The growth and development of the Acarina and its bearing on Arthropod
embryology. Myobia musculi; T. autumnalis; Histiostoma polypori;
Scheloribates laevigatus.

JORDAN, H. Ph.D., M.S., M.A., Prof. — Lab. of Histol. and Embryol.,

Dept of Anat, Coll. of Med., Univ. of Vermont, BURLINGTON, Vt,

U.S.A.

(no data received over this year)
JOST, A. D. Dr Sc. — Lab. de Biol. anim. du P.C.B., Fac. des Sci., Univ.

de Paris, 7, Rue Cuvier, PARIS Ve, France,
a. Developmental physiology of the mammalian fetus. Foetal endocrinology

and morphogenesis. Rabbit, Rat and Hamster
KAELIN, J. Prof. — Inst, de Zool., FRIBOURG, Suisse.

(no data received)
KALLEN, B. Med. kand. — Tornblad-Inst. of comp. Embryol., Anat. Dept

of the Univ. of Lund, LUND, Sweden.
a. Ontogenesis of the telencephalon. (Mammalia)
KAMER, J. C. v. d. Dr Sc. — Zool. Lab. der Rijks Univ., Janskerkhof 3,

UTRECHT, Holland.

a. Comparative embryological study of pineal cytology. (Vertebrates)

b. Normal development and cytology of the pineal region in Torpedo
ocellata and Torpedo marmorata. (Pisces)

c. Normal development of the ear in Xenopus laevis. (Amphibia) (Normal
Table).

KARCZMAR, A. G. Ph.D. — Georgetown Univ., School of Med.,
WASHINGTON 7, D.C., U.S.A.
a. The alkaline phosphatase activity in regenerating limbs. The comparison
of the activities of this enzyme in dedifferentive, growth and differen-
tiation stages of regeneration on one hand and in limb ontogeny on
the other. Activities of alkaline phosphatase in experimentally induced
changes of regenerative fate. Amblystoma punctatum and opacum
(Urodeles)

Karczmar 49 King

b. The effect of antimitotics and carcinogens on regeneration. The effect
of nitrogen mustard as compared to that of denervation. The comparison
of the effects of these agents during various stages of regeneration, with
special emphasis on the effect of carcinogens on dedifferentive stage
of regeneration and on experimentally induced exaggerated dedifferen-
tiation (regression). Amblystoma punctatum and opacum (Urodeles)

c. Effect of pharmacological agents during progressive stages of differen-
tiation. Change of response to agents acting on central and peripheral
system during morphogenesis. Amblystoma punctatum and opacum

KATAKURA, Y. M.A. — Biol. Inst, of Keio Univ., Hiyoshi, Kohoku,
YOKOHAMA, Japan. (Insects)

a. Differentiation of the primordial germ-cell in the silkworm. Bombyx mod

b. The sexual characters of gynandromorph in the silkworm. Bombyx mori
KEMP, N. E. Ph.D. — Dept of Zool., Univ. of Michigan, ANN ARBOR,

Mich., U.S.A.

a. Synthesis and utilization of yolk during morphogenesis of Amphibians.
Rana pipiens and Amblystoma punctatum

b. Differentiation of viscera and survival of tadpoles with opened body
cavities. Rana pipiens (Amphibia)

KERKHOF, Miss A. M. Arts — Anat.-Embryol. Lab. of the Univ. of

Leyden, Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN,

Holland,
a. Influence of the gonadal hormones on the development of the female

genital system in the mouse. (Rodents, Mammals)
KERR, J. Graham Dr, Prof. (Emer.) — Dalney Veed, ROYSTON (Herts).

Barley, England.
KIANG, H. M. B.Sc, Dr rer. nat. — Dept of Biol., Nat. Univ. of Chekiang,

HANGCHOW, China,
a. Studies on eye-stalk hormone in Crustacea:

1. Isolation and purification of the hormone preparation.

2. Chemical identification of the active principle.

3. Mechanism of the hormonal action.

Caridina denticulata (Decapoda) (in collaboration with J. CHU, P. S.
CHOW and Miss N. TSAI)
KILLE, R. A. B.Sc. — Dept of Zool., Univ. of Edinburgh, West Mains Rd,
EDINBURGH 9, Scotland,
a. The early development of the skull bones developing in connection with
the lateral line canals. Salmo spp. (Teleostei)
KINDAHL, Miss M. E. Phil. Dr — Zootom. Inst., Univ. of Stockholm, 116,
Drottinggatan, STOCKHOLM, Sweden.
a. The development of the teeth. (Insectivora)
KING. R. — Dept of Biol. Sci., Stanford Univ., STANFORD, Cal., U.S.A.
a. A study of melanophore differentiation, utilizing melanin inhibitors
(e.g. phenylthiourea). (Amphibians)
KING T. J. B.S., M.S. — Lankenau Hosp. Res. Inst, and Inst, for Cancer
Res., Burholme Ave Fox Chase, PHILADELPHIA 11, Pa. U.S.A.
a. By combining the techniques of gynogenesis and androgenesis, partial
blastulae are produced which are presumably devoid of functional nuclear
material. The potentialities of these "nucleusless cells" are being inves-
tigated via transplantation to healthy, normal blastulae. Rana pipiens
(Amphibia) (in collaboration with R. W. BRIGGS and E. U. GREEN)

King 50 Krause

KING, T. S. M.B., Ch.B. — Dept of Anat.. Fac. of Med., Univ. of Sheffield,
SHEFFIELD, England,
a. Development of face and correlated innervation. Homo (Mammalia)

KLAPPER, Miss CI. E. Ph.D., Prof. — Med. Coll. of Alabama, BIRMING-
HAM, Ala., U.S.A. (no data received over this year)

KLOFT, W. Dr rer. nat. — Zool. Inst, der Univ. Wiirzburg, Naturw. Fak.,
Rontgenring 10, WORZBURG, Deutschland.

a. Embryonic development and metamorphosis of Tropinota hirta. (Coleo-
ptera)

b. Reduktion der Flugel und Fliigelmuskulatur bei von Nematoden infizier-
ten Ameisen und Wespen. Lasius niger u.a. (F ormicidae) , Orymica rubra
u.a. (Orymicinae), Vespa germanica (Vespidae)

KNOUFF, R. A. Ph.D., Prof. — Dept of Anat., Ohio State Univ., CO-
LUMBUS 10, Ohio, U.S.A.
(no data received over this year)
KOCHER, W. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich,
Kunstlergasse 16, ZURICH 6, Schweiz.
a. Differentiation and regeneration of notochord. Triton (Amphibia)
KOK, J. C. N. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in col-
laboration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER, Miss W. H. T. van HEESCH, J. W. KUIPER,
Miss R. P. van LOO, G. D. NIJENHUIS, Miss J. E. H. SMIT and
W. L. van UTRECHT)
KOLLROS, J. J. Dr, Prof. — Dept of Zool., State Univ. of Iowa, IOWA
CITY, Iowa, U.S.A.
a. The development of the spinal cord and nerves of Xenopus lac 'is.
(Anura, Amphibia) (Normal Table)
(no further data received)
KONOPACKA, Mrs B. Dr, M.V.S.S. — Inst, of Histol. and Embi 1.,
Academy of Med., ul. Chalubinskiego 5, WARSZAWA, Poland
a. Histochemical investigations on the development of fishes. Cyp s
carpio
KOPSCH, Fr. Dr, Prof. (Emer.) — Archivstr. 9, BERLIN— DAHLI .

Deutschland. (Anat. Inst, der alten Berliner Univ.)
KRABBE, K. H. Dr Med. — Tornblad-Inst. of comp. Embryol..
Dept of the Univ. of Lund, LUND, Sweden,
a. Morphogenesis of the brain. (Birds)
KRAlNSKA, Mrs M. K. Mag. of Sc. — Inst, of Histol. and Em
Acad, of Med., ul. Chalubinskiego 5, WARSZAWA. Poland,
a. A cytochemical study of the Insect egg. Cynipidae and other Inst
KRAMER, T. L. Ph.D. — Dept of Anat., Univ. of Michigan, Med. School
2500 East Med. Bldg, ANN ARBOR, Mich., U.S.A.
a. Innervation of the heart of the chick embryo. Attempting to determine
when the nerves reach the heart and what effects this innervation has
upon the character of the heart-beat. (Birds)
KRAUSE, W. Dr Med. — Anat. Inst, der Univ. Wien, Wahringerstr. 13,
WIEN IX, Osterreich.
a. Vollstandige Untersuchung eines menschlichen Eies mit 0,32 mm. Keinv-
schildlange. (Mammalia)

Kui 51 Kiih

KRAUSS, M. Ph.D. — Dept of Biol., The Johns Hopkins Univ., BALTI-
MORE 18, Md, U.S.A.

a. Growth stimulation by organs and organ extracts on homologous organs.
Chick (Aves)

b. Effects of specific antisera on morphogenesis. (Amphibia)
KREDIET, G. Dr, Prof. — Veter.-Anat. Inst., Biltstr. 172, UTRECHT,

Holland,
a. Development of genital tract and gonads in domestic animals. (Birds
and Mammals) (in collaboration with J. BRUINS)

KREMER, Miss A. — Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2,
UTRECHT, Holland,
a. Analysis of the neural induction. Transfer of activating substances in
horizontal direction through presumptive ectoderm and the subsequent
organisation of a nervous system, (heteroplastic transplantation of ecto-
derm) Triturus taeniatus, alpestris and cristatus (Amphibia) (in col-
laboration with P. D. NIEUWKOOP and Miss E. BOTEREN-
BROOD)

KROPP, B. N. A.M., Ph.D., Prof. — Queen's Univ., Med. School, KING-
STON, Ont., Canada.

a. Development of vascular pattern of teeth, mouth and face. Homo
(Mammalia)

b. Development, structure and functions of trophoblast. Homo, Rattus and
Lepus (Mammalia)

KROTKIEWICZ, T. — Inst, of Histol. and Embryol., Med. Acad.,
GDANSK, Poland,
a. Regeneration in Amphibians. The influence of inanition on that pheno-
menon, (in collaboration with E. H. WISKONT and S. HILLER)

KRUGELIS, Miss E. J. Ph.D. — Osborn Zool. Lab., Yale Univ., NEW
HAVEN 11, Conn., U.S.A.

a. Alkaline phosphatase activity during development in relation to tem-
perature. Amblystoma punctatum (Amphibia)

b. Alkaline phosphatase activity and nucleic acids during development in
relation to morphogenesis. Amblystoma punctatum (Amphibia)

KUGLER, O. E. Ph.D., Assoc. Prof. — Dept of Zool., Univ. of Illinois,
URBANA, 111., U.S.A.

a. Localization of phosphatase in the reproductive system. Periplaneta
ameticana (Insecta) and Semotilus atromaculatus attomaculatus
(Osteichthyes)

b. Localization of nucleic acids in the reproductive system. Periplaneta
ameticana (Insecta)

KUHN, A. Dr Phil.h.c, Dr Phil., Prof. — Zool. Inst, der Univ. Tubingen,
u. Max-Planck-Inst. fur Biol., Holderlinstr. 12, TUBINGEN, Deutsch-
land.

a. Wundheilung und Regeneration bei Ephestia. (Ptychopoda, Lepido-
ptera)

b. Entwicklung der Schuppen von Ephestia. (Ptychopoda, Lepidopteva)
bei verschiedenen Mutanten und unter experimentellen Bedingungen.

c. Genwirkungen und Phaenocopien bei der Ausbildung von Zeichnungs-
mustern bei Ephestia. (Ptychopoda, Lepidoptera)

d. Vergl. Untersuchungen der Furchung und Keimblatterbildung bei
Hydvoiden div. spec. (Coelentevata)

Ku 52 Lan

KUIPER, J. W. — Zool. Lab. der Rijks Univ., Janskerkhof 3. and Hubrecht
Lab., Internal. Embryol. Inst., UTRECHT, Holland.

a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in col-
laboration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER, Miss W. H. T. van HEESCH. J. C. N. KOK,
Miss R. P. van LOO, G. D. NIJENHUIS, Miss J. E. H. SMIT and
W. L. van UTRECHT)

b. Description of the development of the epiphysis and ganglia habenularis,
with the aid of slides of the late Prof. DOHRIN. Petromyzon spec.
(Cyclostomata)

KUNO, M. — Biol. Inst., Fac. Sci., Nagoya Univ., Chigusa-Ku, NAGOYA,
Japan,
a. Physiological studies on the cleavage of the sea urchin eggs. Strongylo-
centrotus pulcherrimus (Echinoidea)

KURKIEWICZ, T. Dr Sc, Prof. — Inst. d'Histol. et d'Embryol., Fac.
de Med. de l'Acad. de Med. a Poznan, ul. Swiecickiego 6, POZNAN,
Pologne.
a. Histogenese de la corticosurrenale dans les conditions experimentales.
Rat (Mammiferes)

KUTSKY, P. B. A.B., Ph.D. — Dept of Zool., Univ. of California, BER-
KELEY 4, Cal., U.S.A.

a. Phosphorus metabolism in the amphibian embryo studied with radioactive
phosphorus. Rana pipiens

b. Studies in protein metabolism of amphibian embryo. II — Free amino
acids; III — Peptides; IV — Uptake of radioactive methionine. Rana
pipiens and Hyla regilla (in collaboration with W. E. BERG and
R. M. EAKIN)

KUUSI, Miss T. Mag.phil. — Zool. Lab., Univ. of Helsinki, Dept of Physiol.,

P. Rautatiekatu 13, HELSINKI, Finland,
a. The chemical nature of the specific inductive substances (isolated from

liver and kidney of the guinea-pig) . Triton (Amphibia)
LALLIER, R. A. Lie. es Sc. — Inst, de Biol, physicochimique, 13, Rue Pierre

Curie, PARIS Ve, France.

a. Li et developpement embryonnaire, etude de la biochemie des embryons
lithines. Rana fusca, Amblystoma mexicanum (Amphibia)

b. L'induction chez les Amphibiens. Discoglossus pictus et Triton taeniatus
LANDAUER, W. Ph.D., Prof. — Dept of Genet., Coll. of Agric, Univ.

of Connecticut, Storrs Agric. Exper. Stat., STORRS, Conn., U.S.A.

a. Developmental studies on various mutants of fowl, such as "duplicate",
"creeper chondrodystrophy", etc. Gallus domesticus (Aves)

b. A causal analysis of teratogenic action of insulin on developing chicken
embryos. Gallus domesticus (Aves)

LANGEVOORT, H. L. M.Drs — Anat.-Embryol. Lab. der Rijks Univ.,
Oostersingel 69, GRONINGEN, Holland,
a. Development of paraphysis in birds and the circulation of the cerebro-
spinal fluid. Gallus
LANGMAN, J. — Anat.-Embryol. Lab., Univ. van Amsterdam, Maurits-
kade 61, AMSTERDAM O., Holland,
a. Transplantation of cultivated endocrine organs. Differences caused by
autologous, heterologous and homologous media. (Vertebrates)

Lar 53 Leghissa

LARAMBERGUE, M. de Dr es Sc. Prof. — Lab. de Zool., Fac. des Sci.,
POITIERS, Vienne, France.

a. Rechcrches sur le developpement embryonnaire de l'appareil genital
hermaphrodite de divers Gastropodes.

b. Differentiation des gametes chez des Gastropodes hermaphrodites.

c. Genetique des races euphalliques et aphalliques de Bulinus truncatus
(contortus). (Gastropodes)

LATIMER. H. B. Ph.D., Prof. — Dept of Anat., Univ. of Kansas, Med.
School. LAWRENCE, Kan., U.S.A.

a. Some anomalies found in a series of 180 fetal dogs. (Mammals)

b. Growth of the organs and systems of the rabbit in the prenatal and
postnatal periods. Oryctolagus cuniculus (Mammals)

c. Statistical study of the parts of the nervous system and the endocrine
glands in the guinea pig. Cavia porcellus (Mammals)

d. Prenatal growth of the urogenital system of the dog. Canis familiaris
(Mammals)

e. Changes in the size of the ventricular walls of the heart in the rabbit,
guinea pig, dog and man. (Mammals)

LAVELLE, A. B.S., M.S., Asst Instructor — Dept of Anat., Univ. of

Pennsylvania, School of Med., PHILADELPHIA 4, Pa, U.S.A.
a. Development of chromophil substance in central nervous system. Guinea

pig and man (Mammals) (in collaboration with W. F. WINDLE)
LEACH, W. J. B.A., M.A., Prof. — Dept of Anat., Ohio State Univ.,

COLUMBUS 10, Ohio, U.S.A.

(no data received over this year)
LEBLOND. C. P. Prof. — Dept of Anat., McGILL Univ., MONTREAL,

P.Q., Canada.

a. Development of the thyroid gland. (Vertebrates)

b. The development of bones and teeth as shown by radioautographs with
the help of radio-phosphorus and radio-carbon. (Vertebrates) (in col-
laboration with R. GREULICH and L. F. BELANGER from Dept of
Histol., Univ. of OTTAWA)

LEE, G. M. A.B., Prof. — Dept of Anat., Univ. of Kansas, Med. School,

LAWRENCE, Kan., U.S.A.
a. Development of the central and peripheral nervous system in relation

to behavior patterns along Coghillian lines of investigation. Amblystoma

tigrinum and maculatum (Amphibia) (in collaboration with P. G.

ROOFE)
LEE, H. J. v. d. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,

Holland,
a. Microincineration of various stages of development. Limnaea stagnalis

(Gastropoda)
LEGHISSA, S. Ph.D. — 1st. di Anat. comp., Via Belmeloro 8, BOLOGNA,

(103), Italia.

a. Study of the cortex in Ascidian eggs. Fusion of blastomeres in Ascidians.
Ascidia (Urochordata)

b. Differentiation and morphology of nervous tissue in Coelenterata.

c. Differentiation and morphology of nervous tissue in Vertebrates.

d. Effects of antimitotics on regeneration of peripheral nerves and on meta-
morphosis of Amphibians. Rana, Bufo (in collaboration with P. PAS-
QUINI)

Leghissa 54 Lesh

e. Regeneration of peripheric nerves. Homo (Mammals)

f. Action of vitamins (A, B group, C) on the histophysiology of endocrine
glands during metamorphosis of Amphibians. Rana

LEHMAN, H. E. M.A., Ph.D., Prof. — Wilson Zool. Lab., Univ. of North
Carolina, CHAPEL HILL, N.C., U.S.A.

a. Studies on the behavior, differentiation, and metabolism of Amphibian
pigment cells as related to the establishment of specific pigment patterns
of larvae and adults. Amblystoma and Triturus

b. Studies on the relation of external media and physical surfaces on the
migration and differentiation of Amphibian tissues in vitro. Amblystoma
and Triturus

LEHMANN, F. E. Dr Phil., Prof. — Abt. fur Zoophysiol., Zool. Inst, der
Univ., Sahlistr. 8, BERN, Schweiz.

a. Allometrisches Wachstum bei Amphibien. (in Zusammenarbeit mit
diversen Mitarbeitern)

b. The influence of chloramine-compounds on early development (neuru-
lation and embryo- formation) of the Amphibian egg. Triturus alpestris
and Tr. taeniatus (in collaboration with P. D. NIEUWKOOP)

c. Schwanzregeneration von Xenopus, normal und chemisch beeinflusst.
(Amphibia) (in Zusammenarbeit mit diversen Mitarbeitern)

d. Elektronenmikroskopische Struktur von tierischen Eiern (Echinodermen,
Ascidien und Tubifex)

e. Regeneration bei Coelenteraten. Hydrozoa (Bedeutung der I-Zellen)
(in Zusammenarbeit mit P. TARDENT)

f. Erzeugung von Teratomen bei Xenopus-larven. (Amphibia)
LELIfiVRE, A. — Lab. d'Embryol., Fac. de Med., 15, Rue Ecole de Med.,

PARIS Vie, France,
a. Etude des anomalies de divers types. Homo (Mammalia)
LENDER, Th. Prof. — Lab. de Zool. de la Fac. des Sci. et Lab. d'Embryol.
et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol, generale,
12, Rue de l'Universite, STRASBOURG, France,
a. Regeneration des yeux. Role du systeme nerveux dans la regeneration
des yeux des Planaires. Polycelis nigra (Turbellaries)
LEONE, V. Dr — 1st. di Zool. e Anat. comp., Via Celoria 10, MILANO,
Italia, (from 1st. di Anat. um. norm. dell'Univ. di PALERMO)
a. NaSCN action on embryonic development. (Amphibia and Aues)
LEPORI, N. G. lib.doc. — 1st. di Zool. e Anat. comp. dell'Univ., Via A.
Volta 4, PISA, Italia,
a. Ovo- and spermatogenesis — gynogenetic development — polyploidy
— chromose cycle. Polycelis nigra (Turbellaria)
LESHER, S. Ph.D. — Dept of Anat., Univ. of Kansas, Med. School,
LAWRENCE, Kan., U.S.A.

a. The nucleic acids (RNA, DNA) their localization and relative con-
centration in the larval salivary gland of Drosophila robusta during the
course of larval development. (With special emphasis on the interrelation
of the two nucleic acids and the role of the nuclear components in their
metabolism). (Insecta, Diptera)

b. A survey of the enzyme systems concerned in the embryonic develop-
ment of the amphibian nervous system. (Emphasis will be on the time
of appearance of the various enzyme systems, their localizations and
their concentrations). Amblystoma

Lev 55 Lil

LEVER, J. Dr Phil. — Zool. Inst., Free Calvinistic Univ., AMSTERDAM,
a. Descriptive embryology of Colisa labiosa. (Pisces) Holland.

LEVI, G. L. Dr, Prof. (Emer.) — Inst, of human Anat., Fac. of Med., Corso
Massimo d'Azeglio 52. TORINO, Italy.

a. Recherches sur les transformations qui se produisent dans les organismes
et dans les tissus cultives in vitro pendant l'accroissement. (Vertebres
superieurs)

b. Recherches sur les caracteres de la structure et des proprietes biologiques
dans les tissus cultives in vitro. (Vertebres superieurs)

LEVI— MONTALCINI, Miss R. M.D. — Dept of Zool., Grad. School of
Arts and Sci., Washington Univ., Lindell and Skinker Aves, ST LOUIS
5, Mo., U.S.A. (from Univ. of TORINO, Italy)

a. Response of embryonic nervous system to implantation of mouse tumors.
Chick embryo (Aves) (in collaboration with V. HAMBURGER)

b. Origin of sympathetic and parasympathetic nervous system. (Reptilia
and Aves)

LEVI— MONTALCINI, R. M.D. — Dept of Zool., Grad. School of Arts

and Sci., Washington Univ., Lindell and Skinker Aves, ST LOUIS 5,

Mo.. U.S.A.
a. Control of proliferation and differentiation of the nervous system. Chick

(Aves) (in collaboration with V. HAMBURGER)
LEWIS, F. Th. A.M., M.D., Prof. — Harvard Med. School, 25, Shattuck

Str., BOSTON 15, Mass.. U.S.A.

a. The shape of cells in certain early embryonic tissues. Chick, rabbit and
man (Higher Vertebrates)

b. Embryological study of human tracheo-oesophageal fistula. (Mammals)
LEWIS, W. H. Dr, Prof. (Emer.) — Wistar Inst, of Anat. and Biol.,

PHILADELPHIA 4, Pa, U.S.A.

LI. Miss S. C. B.S. — Dept of Zool., Coll. of Sci., Nat. Univ. of Peking,
Ching Shan Tung Chieh, PEIPING, China,
a. Study of the influence of the optic vesicle on the development of head
skeleton and accessory organs of the eye ball, by extirpation of the optic
vesicle at tail bud stage. Rana nigromaculata (Amphibia)

LIAO, Y. K. B.S. — Dept of Zool.. Coll. of Sci., Nat. Univ. of Peking,
Ching Shan Tung Chieh, PEIPING, China,
a. The reactive capacity of Rana nigromaculata to abnormal inductor seems
to be weaker than that of Triton. In order to find out whether the
ectoderm of Rana is less sensitive to inductive stimuli Holtfreter's
experimental method (1947) was adopted. Isolated gastrular ectoderm
of Rana was given a treatment with acid and alkali solution of various
length of duration. Thus it will be found whether the pH ranks which
cause neural differentiation in Triturus (or Amblystoma) and in Rana
ectoderm are different. Furthermore, the cause why Triturus and Rana
ectoderms react differently to the same pH rank will also be studied.

LILLIE, R. S. Ph.D., Sc.D. — Physiol. Lab., Univ. of Chicago, CHICAGO
37, 111., U.S.A. — Marine Biol. Lab.. WOODS HOLE. Mass.. U.S.A.
a. Artificial activation of unfertilized marine eggs, chiefly of starfish and
sea-urchin. Determination of physiological (and physico-chemical) fac-
tors concerned in the change of the egg from the resting to the active
and developing state. Asterias forbesii and Arbacia punctulata (Echino-
dermata)

Lin 56 Liu

LINDAHL, P. E. Fil. Dr, Prof. — Inst, for Zoophysiol., Fac. of Mat.-Nat.
Sci., Villavagen 9, UPPSALA, Sweden.

a. Large scale separation of macromeres, mesomeres and micromeres of the
developing sea urchin egg. (Echinodermata)

b. Changements of dehydrogenase system at fertilization of the sea urchin
egg. (Echinodermata)

c. The biochemical mechanism of the animalization of the unfertilized sea
urchin egg. (Echinodermata)

d. The biochemical back ground for the vegetalization of the sea urchin
egg by Li + . (Echinodermata)

LINDBERG, N. O. H. Phil.Dr, Prof. — Wenner-Grens Inst, for exper.
Biol.. Norrtullsgatan 16. STOCKHOLM 23, Sweden,
a. On surface reactions of the sea urchin egg with special attention to
phosphate-metabolism. On the dehydrogenase systems of the sea urchin
egg. (Echinoderms)

LINDVALL, S. Engineer — Wenner-Grens Inst, for exper. Biol., Norrtulls-
gatan 16, STOCKHOLM 23, Sweden,
a. Studies on the proteins of unfertilized — and the first stages of fertilized
sea urchin eggs. (Echinoderms)

LIPSCHUTZ, A. M.D., Prof. — Dept de Med. Exper. del Servicio Nacional
de Salubridad, Av. Irarrazaval 849, SANTIAGO, Chile, South America.

a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts
in the spleen. Cavia cob. (Mammalia) (in collaboration with R.
IGLESIAS, S. BRUZZONE, Miss E. MARDONES and Miss M.
BARAKONA)

b. Influence of steroids on the gonadotrophic function of the hypophysis;
and on the follicular development of the ovary. Ovarian grafts in the
spleen; with the simultaneous action of steroids absorbed from beneath
the skin, or absorbed from the spleen; and other devices. Cavia cob.
(Mammalia) (in collaboration with R. IGLESIAS, S. BRUZZONE,
Miss E. MARDONES and Miss M. BARAKONA)

LISON, L. — Lab. d'Hist, Fac. de Med. de l'Univ., 97, Rue aux Laines,
BRUXELLES, Belgique.
a. Photometric quantitative determinations of desoxyribonucleic acid
(D.N. A.) in resting cells, mitosis, spermatogenesis and development.
(Vertebrates) fin collaboration with J. J. PASTEELS)
LITTLE, C. C. Sc.Dr, Prof. — Jackson Memorial Lab., Box 558, BAR
HARBOR, Me., U.S.A.
a. Studies on the form and function of ovaries which have been grafted
into spleens of castrates and subsequently retransplanted into normal
position within the ovarian capsule of a normal mouse. Offspring of
these ovaries are examined for abnormalities which may be correlated
with the time the graft remained in the spleen. Mus musculus (Mam-
malia) (in collaboration with Miss K. P. HUMMEL)
LIU J C. B.S., Ph.D., Assoc. — Dept of Anat., School of Med., Univ.
' of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A.
a. Regeneration in mammalian central nervous system. (Recovery of neurons
following trauma, alteration in their internal environment). Car and dog
(Mammals) (in collaboration with W. F. WINDLE and several other
coworkers)

Lorn 57 Luyendijk

LOMBARD, G. L. M.Sc. — Hubrecht Lab., Internat. Embryol. Inst., 2,
Janskerkhof. UTRECHT, Holland.

a. Investigations into the effects of LiCl on the early development of
Xenopus laevis, Daudin and Amblystoma mexicanum. (Amphibians)

b. Homoplastic transplantations of presumptive notochord and neural areas
respectively, between Lithium-treated and normal blastulae/early gas-
trulae in Triturus and Xenopus. (Amphibians)

LOO, Miss R. P. van — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT, Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER. Miss W. H. T. van HEESCH, J. C. N. KOK,
J. W. KUIPER, G. D. NIJENHUIS, Miss J. E. H. SMIT and W. L.
van UTRECHT)

L0VTRUP, S. Mag.scient. — Cytochem. Dept, Carlsberg Lab., 8, Gl.
Carlsbergvej., COPENHAGEN Valby, Denmark,
a. Proteolytic enzymes during amphibian development. Amblystoma mexi-
canum and Xenopus laevis

LUBCHENCO, L. M.D. — Univ. of Colorado, Med. Center, Dept of
Pediatrics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A.

a. Study of differentiation of chick somites in explants (Spratt technique).
(Aves) (in collaboration with H. HERRMANN, J. McKENZIE and
U. ROTHFELS)

b. Study of developmental disturbances related to nutritional deficiencies
investigated by application of anti-vitamins and anti-amino acids to the
intact egg and to explants (somites). In particular, it will be attempted
to define the factors which maintain the balance between myotome,
sclerotome and dermatome during differentiation of the somite and are
required for the normal development of the retina (possible connection
with retrolental fibroplasia of the premature human infant) (Aves)

(in collaboration with H. HERRMANN, J. McKENZIE and U.

ROTHFELS)
LUMB, Miss E. S. Ph.D. — Dept of Biol., Coll. of Arts and Sci., Univ.

of Rochester, ROCHESTER 3, N.Y., U.S.A.
a. A cytochemical study of the nucleic acids in the differentiating spinal

nervous system of the chick. Gallus domesticus (Aves)
LOSCHER, M. Dr — Zool. Anstalt, Univ. Basel, BASEL, Schweiz.

(no data received over this year)
LUTHER, W. Dr Phil., Prof. — Zool. Inst, der Univ., MARBURG,

Deutschland.

a. Determination of the regenerating blastema. (Amphibia) Mammalia)

b. Effects of X-rays on growth and cell division; tumors. (Amphibia and
LUTZ, H. Dr es Sc. — Lab. de Zool., Fac. des Sci., 1, Avenue Vercingetorix,

CLERMONT, France.

a. Developpement du blastoderme de cane pendant les premieres heures de
l'incubation. (Aves) [embryons.

b. La polyembryonie experimentale chez les oiseaux; l'orientation des
LUYENDIJK, W. Arts — Anat.-Embryol. Lab. of the Univ. of Leyden,

Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN. Holland,
a. Development of diencephalon and hypophysis hi man. (Mammals) (in
collaboration with J. DANKMEIJER)

Luyendijk 58 Mark

b. Development of hypothalamic nuclei in man and rodents. (Mammals)
MALAN, Miss M. E. D.Sc. — Zool. Inst., Univ. of Stellenbosch, STEL-
LENBOSCH, South Africa,
a. Some developmental stages of the skull and the palate. Nyctisyrigmus
pectoralis (Caprimulgidae, Aves)
MANDL, Miss A. M. B.Sc. — Dept of Anat, The Med. School, Birmingham
Univ., Edgbaston, BIRMINGHAM 15, England,
a. Study of oogenetic function. Rodents (Mammals)
MANGOLD, O. Dr, Prof. — Heiligenberg-Inst. (Abtlg. Mangold), (17b)
HEILIGENBERG, Kreis Oberlingen/Bodensee, Deutschland (Fran-
zosische Zone).

a. Entstehung und Determination der Geschlechtszellen und Gonaden bei
Urodelen (gemeinsam mit O. STARK). Triton (Amphibien)

b. Determinationsvorgange in der Gastrula und Neurula von Triton.
(Amphibien) (gemeinsam mit Frl. H. WAECHTER)

MANHOFF, L. J. — Dept of Zool., Duke Univ., DURHAM, N.C., U.S.A.

a. A simplified technique for micro-electrocoagulation. Using a platinum
electrode and hyfrecator, accurate coagulation is controlled. Domestic
chick (Aves) (in collaboration with M. W. JOHNSON)

b. A simple micromanipulator, (in collaboration with M. W. JOHNSON)
MANTON, S. M. F.R.S., M.A., Sc.D. — King's Coll., Strand, LONDON

W.C. 2, England,
a. Embryology of Peripatus. (Onychophora)
MAPP F. E. M.A., M.S. — Dept of Zool., Univ. of Chicago, CHICAGO
37, 111., U.S.A. WEISS)

a. Regeneration of notochord. (Amphibia) (under direction of P. A.
MARCHLEWSKI, J. H. Dr — Zaklad Anat. Porownawczej U.J. im. H.
Hoyera, KRAKOW, sw. Anny 6, Poland,
a. Artificial inseminations with semen stored in different conditions. Gallus
domesticus (Aves)
MARDONES, Miss E. — Dept de Med. Exper. del Servicio Nacional de
Salubridad, Av. Orarrazaval 849, SANTIAGO, Chile, South America.

a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts
in the spleen. Cavia cob. (Mammalia) (in collaboration with A. LIP-
SCHUTZ, R. IGLESIAS, S. BRUZZONE and Miss M. BARA-
KONA)

b. Influence of steroids on the gonadotrophic function of the hypophysis;
and on the follicular development of the ovary. Ovarian grafts in the
spleen; with the simultaneous action of steroids absorbed from beneath
the skin, or absorbed from the spleen; and other devices. Cavia cob.
(Mammalia) (in collaboration with A. LIPSCHUTZ, R. IGLESIAS,
S. BRUZZONE and Miss M. BARAKONA)

MARJANEN, P. — Zool. Lab. of the Univ. of Turku, TURKU, Finland,
a. On the influence of some embryo-extracts on unfertilized eggcells which
have been induced to parthenogenetic development by chemical stimu-
lation. Albino rat (Mammals)
MARKERT, C. L. Ph.D. — Dept of Zool., Univ. of Michigan, ANN AR-
BOR, Mich., U.S.A.
a. Role of the tissue environment in determining cellular differentiation.
The effects of normal metabolic inhibitors on differentiation of pigment
cells in vitro. Gallus domesticus (Aves)

Marl 59 Mens

MARLIER, G. — Lab. de Zool., Fac. des Sci., Inst, de Zool. Torley-
Rousseau, Univ. libre de Bruxelles, 50, Av. F. D. Roosevelt, BRUXEL-
LES, Belgique.
a. Metamorphoses. (Insectes aquatiques)

MARTIN, A. V. W. Ph.D. — M.R.C. Biophysics Res. Unit, King's Coll.,
Strand, LONDON W.C. 2, England.

a. Osteogenesis in avian and mammalian tissue in vitro.

b. Structure and genesis of intercellular fibres, especially osteogenic fibres,
studied with the electron microscope. (Aves and Mammalia)

MASUDA, H. — Lab. of Embryol. and Exp. Morphol., Zool. Inst., Dept of
Sci., Kyoto Univ., KYOTO, Japan.

a. Behaviour of phosphor in early development. Triturus pycrhogaster

b. Induction in regenerating blastema. Triturus pycrhogaster (Amphibia)
MASY, S. — Inst. d'Anat., Univ. de Louvain, 38, Rue des Recollets, LOU-
VAIN, Belgique.

a. Experimental analysis of the development of the appendicular skeleton
in the chick embryo. (Aves)
MATHER, W. B. M. of Sci. — Zool. Dept, Univ. of Queensland, George
Str., BRISBANE, Queensland, Australia,
a. Superimplantation in the rabbit. Oryctolagus cuniculus L. (Mammalia)
McCAFFERTY, R. E. M.S. — Dept of Biol. Sci., Univ. of Pittsburgh,
PITTSBURGH 13, Pa, U.S.A.

a. The effect of extirpation and subsequent implantation of the pituitary
on reproduction. Mus musculus (Mammalia)

b. Growth effects on embryos from maternally administered propylthiouracil
and dibenamine. Mus musculus (Mammalia)

McCALLION, D. J. B.A., M.A., Prof. — Dept of Biol., Acadia Univ.,

WOLFVILLE, Nova Scotia, Canada,
a. Effects of carcinogens on growth, regeneration and differentiation in

frog larvae. (Amphibia)
McKEEHAN, M. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37,

111., U.S.A.
a. Cytological and electronmicroscopic studies on lens induction. Gallus

(Aves) (in collaboration with P. A. WEISS and R. PETZOLD)
McKENZIE, J. Ph.D. — Univ. of Colorado, Med. Center, Dept of

Pediatrics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A.

a. Study of differentiation of chick somites in explants (Spratt technique),
(Aves) (in collaboration with H. HERRMANN, L. LUBCHENCO
and U. ROTHFELS)

b. Study of developmental disturbances related to nutritional deficiencies
investigated by application of anti-vitamins and anti-amino acids to the
intact egg and to explants (somites). In particular, it will be attempted
to define the factors which maintain the balance between myotome,
sclerotome and dermatome during differentiation of the somite and are
required for the normal development of the retina (possible connection
with retrolental fibroplasia of the premature human infant). (Aves)
(in collaboration with H. HERRMANN, L. LUBCHENCO and U.
ROTHFELS)

MENSCHIK, Z. M.B., Ch.B., M.D., Prof. — Dept of Anat., Fac. of
Med., Univ. of Ottawa, OTTAWA, Canada,
(no data received over this year)

Met 60 Monroy

METZ, C. B. Ph.D. — Osborn Zool. lab., Yale Univ., NEW HAVEN 11,
Conn., U.S.A.

a. Physiology of fertilization in Paramecium. The chemical nature of the
mating type substances and the role of these substances in fertilization
is currently being investigated. (Protozoa)

b. Mechanism of adjuvant-fertilizin agglutination of starfish sperm. The
adjuvant action of amino acids in starfish fertilizin agglutination of sperm
is being investigated to determine the mechanism of action of these ad-
juvants. Asterias and Patvia (Asteroidea)

c. Antifertilizin and basic proteins. The investigation of the relation of
basic and nucleoproteins to antifertilizin is being extended to include a
specificity study of basic protein agglutination of sperm. Various marine
invertebrate forms including echinoderms.

MEYER, R. de — Inst. d'Anat., Univ. de Louvain, 38, Rue des Recollets,

LOUVAIN, Belgique.
a. Embryological development of the nodal tissue in the avian heart.
MIALHE. P. Lie. es Sc. — Lab. devolution des etres organises, Fac. des

Sci. de Paris, 105 Boulevard Raspail, PARIS Vie, France,
a. Development of the pancreas (Langerhans islands). Rat (Mammalia)

and Chick and Duck (Aves)
MICHELI, A. — Inst. d'Anat., Ecole de Med., 20, Rue Ecole de Med.,

GENEVE, Suisse.

(no data received over this year)
MILLARD, Mrs N. A. H. Ph.D. — Dept of Zool., Univ. of Cape Town,

RONDEBOSCH, South Africa,
a. Complete development of the veins and arteries. Xenopus laevis (Am-
phibia) (Work complete but Normal Table still to be done)
MINGANTI, A. Dr — 1st. di Zool., Via Archirafi 18, PALERMO, Italia.

a. The development of Ascidian hybrids.

b. The cytology of Ascidian hybrids. Lethal hybrids.

c. The chemistry of pigment spots formation in Ascidians.

MOLL, J. Dr Med. — Anat.-Embryol. Lab., Oostersingel 69, GRONIN-
GEN, Holland.

a. Relations between organweight and bodyweight in ontogeny. Various
mammals

b. Embryological development of the roof of the fourth ventricle in Mus.
(Mammalia)

c. Knee-joint development in Homo. (Mammalia)

MONNE, L. Phil.Dr, Prof. — Wenner-Grens Inst, for exper. Biol., Norr-

tullsgatan 16, STOCKHOLM 23, Sweden,
a. Correlations between structure and function of the cytoplasm. Sea

urchins (Echinoderms)
MONROY, A. Dr Med., Prof. — Zool. Stat., NAPLES, Italy, presently at

Rockefeller Institute for Med. Res., 66th Str. York Ave, NEW YORK,

N.Y., U.S.A.

a. Investigations on the biochemistry of fertilization in sea urchin eggs with
special consideration to the changes occurring in proteins. (Echinoder-
mata) (in collaboration with Mrs A. MONROY— ODDO)

b. Analyzation of the nature of the egg antifertilizin. ( Echinodermata) (in
collaboration with J. A. M. RUNNSTRoM, Marine Biol. Stat.,
WOODS HOLE, Mass., U.S.A.)

Monroy 61 Moore

MONROY— ODDO, Mrs A. Dr Chem. — Zool. Stat., NAPLES, Italy,
presently at Rockefeller Institute for Med. Res., 66th Str. York Ave,
NEW YORK, N.Y., U.S.A.
a. Investigations on the biochemistry of fertilization in sea urchin eggs with
special consideration to the changes occurring in proteins, (in collabo-
ration with A. MONROY) (Echinodermata)

MONTALENTI, G. Dr So, Prof. — 1st. di Genet. dell'Univ. di Napoli,
Fac. di Sci., Via Mezzocannone 8, NAPOLI, Italia,
a. Determinism of meiosis. Asellus and other species (Crust., hop.)

MONTEROSSO, B. Sc.Dokt. — 1st. Zoologica, Via Androne 25, CATA-
NIA, Italia,
a. Embriologia e Partenogenesi degli Ataneidi.

MOOG, F. Ph.D., Asst Prof. — Dept of Zool., Grad. School of Arts and
Sci., Washington Univ., Lindell and Skinker Aves, ST LOUIS 5, Mo.,
U.S.A.

a. Patterns of development of enzymes in embryos; differentiation of
enzymes in relation to differentiation of functional ability in embryonic
organs. Rana pipiens and Gallus domesticus (Amphibia and Aves)

b. Radio-active tracer study of the metabolism of amphibian eggs, with
special reference to the organizer, (in collaboration with Mrs E. L.
WENGER)

c. Studies on phosphorous metabolism of amphibian embryos by means of
P 3 ~. Rana pipiens (in collaboration with Mrs E. L. WENGER)

d. Cytological and cytochemical studies of the developing chick duodenum.
Gallus domesticus (Aves) (in collaboration with Mrs E. L. WENGER)

MOOKERJEE, S. M.Sc. — Univ. Dept of Genet., Inst, of Anim. Genet,
West Mains Rd, King's Buildings, EDINBURGH 9, U.K.

a. Experimental study of the origin and relation to surrounding tissue of
the notochord in Amphibia. Triton alpesttis

b. Properties of isolated chorda cells in different pH and electrolytic
conditions. Triton alpesttis (Amphibia)

c. Studies on the notochordectomy. Triton alpestris (Amphibia)
MOORE, A. R. Ph.D., Prof. — Physiol. Lab., Coll. of Sci., Univ. of

Portland, PORTLAND 3, Ore., U.S.A.

a. The form of the pluteus in sea urchin hybrids. Study of skeletal de-
velopment and body form. Strongylocentrotus purpuratus, S. franciscanus
and Dendraster excentricus (Echinoidea)

b. On the nature of the structures which insure the integrity of blastula
and gastrula. Dendraster excentricus and Strongylocentrotus purpuratus
(Echinoderms)

MOORE, Mrs B. C. A.B., A.M., Ph.D. — Dept of Zool., Fac. of pure Sci.,

Columbia Univ., Broadway and 116 Str., NEW YORK 27, N.Y.,

U.S.A.
a. A study of nucleo-proteins in development. Photometric analysis of

haploid and diploid embryonic tissues. Rana pipiens (Amphibia)
MOORE, C. R. Dr, Prof. — Dept of Zool., Univ. of Chicago, CHICAGO,

111., U.S.A.

(no data received)
MOORE, J. A. A.B., M.A., Ph.D., Prof. — Dept of Zool., Fac. of pure Sci.,

Columbia Univ., Broadway and 116 Str., NEW YORK 27, N.Y..

U.S.A.

Moore 62 Mot

a. Competence of androgenetic (haplo-hybrid) gastrula ectoderm, tested
by xenoplastic and heteroplastic transplantation to diploid hosts. Rana
pipiens and Rana sylvatica (Amphibia)

b. Gastrula ectoderm competence and dorsal lip potency in hybrid embryos
(Rana pipiens female x Rana clamitans male), tested by xenoplastic
and heteroplastic transplantations to diploid hosts. (Amphibia)

c. Ecology of embryos of Rana septentrionalis. (Measurement of rate of
development and temperature tolerance in relation to ecology)

MORI, H. M.A., Ass. Prof. — Biol. Inst, of Keio Univ., Hiyoshi, Kohoku,

YOKOHAMA, Japan,
a. Insecticide action on the eggs, larvae and adults of various insects.
MORI, Y. M.A., Dr, Prof. — Biol. Inst, of Keio Univ., Hiyoshi, Kohoku,

YOKOHAMA, Japan,
a. On the cause of disappearance of cutaneous melanophores of young

gold-fishes. Carassius auratus (Pisces)
MORICARD, R. Dr Med., Dr es Sc. — Lab. d'Hormonol. et Cytol. exper.,

Ecole des Hautes Etudes, Univ. Hopital Broca, III Rue L. M. Nord-

mann, PARIS 13e, France.

a. Hormonal release of the heterotypic division. (Meiosis in rabbit). (Mam-
mals) (in collaboration with CHIH Chi Sheng)

b. Hypophysectomy and degeneration of the heterotypic division (Meiosis
in rat). (Mammals)

c. In vitro fertilization of the mammalian ovum.

d. Oxydoreduction potential reduction of methylene blue in sperm. (Am-
phibians) (in collaboration with G. GUILLON)

e. Cinematography: cleavage in Pleurodeles. (Amphibians) (in collaboration
with Miss S. GOTHIE)

f. Tensioactive substances in the gastrula. (Mammals) (in collaboration
with Miss S. GOTHIE)

MORLON, Mile C. — Lab. d'Embryol., Fac. de Med., 15, Rue Ecole de

Med., PARIS Vie, France,
a. Influence teratogene des intoxications maternelles. Homo et Rattus
MOSSMAN, H. W. Ph.D., B.S., M.S., Assoc. Prof. — Dept of Anat,

Univ. of Wisconsin, MADISON, Wis., U.S.A.

a. Regeneration of the ovary of mammals, and potentialities of the various
ovarian elements. Mus, Lepus and Erithizon

b. Comparative m rphology and physiology of the fetal membranes and
reproductive organs of mammals. Any species available, but at the
moment emphasis on Sc a 1 is and Odocoileus.

c. Place of fertilizau of the mammalian egg. (Rodentia and Carnivora)
(in collaboration with F. STRAUSS, Anat. Inst., BERN, Schweiz)

MOTOMURA, I. Dr Sc, Prof. — Lab. of Embryol., Inst, of Biol., Tohoku
(Imperial) Univ., SENDAI, Japan.

a. The role of the cortical cytoplasm on the determination of the polarity
of the egg. Bufo vulgaris formosus (Amphibia)

b. Studies on the mechanism of cleavage; especially on the new formation
of the cleavage plane. Sea urchins (Echinodermata)

c. The role of the Janus green granula (JGG cortical granule) in the
fertilization and the membrane formation. Sea urchins (Echinodermata)

d. Double embryos caused by the double invagination in the centrifuged
eggs of the foacf. (Amphibia)

Mou 63 Nei

MOULTON, J. M. B.S. — Biol. Lab's, Harvard Univ., Divinity Ave,
CAMBRIDGE 38. Mass.. U.S.A.
a. Study of muscle development and differentiation in transplanted am-
phibian limbs, (under direction of Prof. A. S. ROMER)

MUCHMORE. W. B. Ph.D. — Dept of Biol.. Coll. of Arts and Sci.. Univ.
of Rochester, ROCHESTER 3, N.Y.. U.S.A.
a. Early differentiation of trunk mesoderm. Amblystoma maculatum (Am-
phibia)

MULNARD, }. M.D. — Lab. d'Anat. et d'Embryol., Fac. de Med. de
l'Univ., 97, Rue aux Laines, BRUXELLES, Belgique.

a. Cytochemical observations on oogenesis and development of Acantho-
celides (CI.) and Drosophila (Dipt.). (Insecta)

b. Study of the nucleoles of the giant cells of Diptera. (Insecta)
MURRAY. P. D. F. D.Sc, M.A.. Prof. — Dept of Zool.. Univ. of Sydney,

SYDNEY, N.S.W., Australia,
a. Histogenesis of fusion of parallel bones. (Anuva, Amphibia), Gallus
(Aves), Rattus (Mammalia), etc.
MUSTAKALLIO, M. M.D., Prof. — Dept of Anat., Fac. of Med., Helsinki
Univ., HELSINKI, Finland,
a. On the appearance of elastic tissue in the vessels of human foetus.
(Mammalia)
NACE. G. W. B.A., M.A., Ph.D., post graduate fellow, Nat. Inst, of
Health, U.S.A. — Lab. de Morphol. anim., Univ. libre de Bruxelles,
1850, Chaussee de Wavre, BRUXELLES- Auderghem, Belgique. (Dept
of Zool., Univ. of California, LOS ANGELES 24, Cal., U.S.A.)
a. Plasma proteins during development in the chick embryo. (Aves) (in
collaboration with A. M. SCHECHTMAN)
NAGATSU, R. M.A. (Rigakushi) — Biol. Inst., Fac. Sci., Nagoya Univ.,
Chigusa-Ku, NAGOYA, Japan,
a. Responses of melanophores of developing embryos of the fish. Oryzias
latipes
NAKANE, T. B.S. — Biol. Inst., Fac. Sci., Nagoya Univ., Chigusa-Ku,
NAGOYA, Japan,
a. Histochemical study on insect eggs. Dineutus orientalis Modder (Co-
leopteta)
NAKANO, E. M.A. (Rigakushi) — Biol. Inst.. Fac. Sci., Nagoya Univ.,
Chigusa-Ku, NAGOYA, Japan.

a. Respiratory metabolism of fish egg during early development. Experi-
ments with Cartesian divers. Oryzias latipes

b. Analysis of the action of lithium on fish development. Oryzias latipes

c. Influence of fatty acid on the fertilization of sea urchin egg. Strongylo-
centrotus pulchevrimus (Echinoidea)

NEEDHAM, A. E. Dr — Dept of Zool. and comp. Anat., The Univ.

Museum, OXFORD, England.

(no data received)
NEEDHAM, J. Dr, Prof. — Gonville and Cains Coll.. CAMBRIDGE.

England.

(no data received)
NEIGER. M. — Inst. d'Anat., Ecole de Med., 20, Rue Ecole de Med..

GENEVE, Suisse.

(no data received over this year)

Nel 64 Newton

NELSEN, O. E. Ph.D., Prof. — Dept of Zool., Univ. of Pennsylvania,
PHILADELPHIA, Pa, U.S.A. (no data received over this year)

NEUKOM, B. J. B.S. — Univ. of Colorado, Med. Center, Dept of Pedia-
trics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A.

a. Chemistry of muscle differentiation, determination of actin and myosin
and phosphate fractions in muscle of chick embryos after the 7th day
of development (concluded). (Aves) (in collaboration with H. HERR-
MANN and M. J. SCHNEIDER)

b. Determination and fractionation of nucleoproteins and determination of
enzymes in chick somites from the 2nd to the 5th day of incubation
and in differentiating chick muscle from the 7th day of incubation to
hatching. (Aves) (in collaboration with H. HERRMANN and M. J.
SCHNEIDER)

c. Chemical fractionation of cell nuclei and mitochondria of differentiating
muscle of chick. (Aves) (in collaboration with H. HERRMANN and
M. J. SCHNEIDER)

d. Histological examination of muscle development including quantitative
determinations of volume of somite columns, of cell number, and of
mitotic index of somites. (Aves) (in collaboration with H. HERR-
MANN and M. J. SCHNEIDER)

NEWELL, G. E. B.Sc, Ph.D. — Queen Mary College, Univ. of London,

Mile End Rd, LONDON E. 1, England,
a. Breeding habits, embryology and larval life-history of Clymenella tor-

quata (Polychaetes)
NEWHALL, C. A. A.B., M.D., Prof. — Dept of Anat., Univ. of Vermont,

Coll. of Med., BURLINGTON, Vt, U.S.A.

(no data received over this year)
NEWTH, D. R. B.Sc. — Dept of Zool. and Comp. Anat., Univ. Coll. of

London, Gower St, LONDON W.C. 1, England.

a. The study of the normal development of the cornea of the eye in an
amphibian. Xenopus laevis

b. The determination of the capacity of the annular tympanic cartilage of
metamorphosing animals to induce tympanic membrane formation when
heteroplastically and xenoplastically transplanted. Xenopus laevis (Am-
phibia, Anura)

c. The fate of the neural crest in lampreys. Lampetta planeri (Cyclostomata)

d. The measurement of the forces involved in neurulation. Amblystoma

e. The development of skeleton and muscles of the tail of Xenopus laevis
from early tail-bud stage till end of metamorphosis. (Anura, Amphibia)
(Normal Table)

NEWTON, B. L. M.D., CM. — Dept of Anat., Coll. of Med., Baylor
Univ., 1200 M.D. Anderson Blvd. Texas Med. Center, HOUSTON 5,
Tex., U.S.A.

a. Continued investigation by homologous and heterologous transplantation
of embryonic material relating to its development in the anterior chamber
in the eye using the method developed by H. S. N. GREENE. Material
from human fetuses as well as guinea pigs and mouse embryos will be
used. (Mammals)

b. Continuation of investigations dealing with the heterotransplantability
of neoplasms in dogs and man, utilizing the anterior ocular chamber of
guinea pigs and rabbits. (Mammals)

Newton 65 Niu

c. Investigation of transplantability of the Brown-Pearce tumor, utilizing
the yoke sac of chicks and the anterior ocular chamber of rabbits.
Morphological changes will be studied, and as well the effect on the
tumor of various chemical agents will be studied. (Aves and Mammalia)
(in collaboration with I. GALINSKY)
NICHOLAS, J. S. Ph.D. Prof. — Osborn Zool. Lab., Yale Univ., NEW
HAVEN 11, Conn., U.S.A.

a. Studies on the rat egg. Mus norvegicus (Mammalia)

b. The development of rat muscle. Mus norvegicus (Mammalia)

c. The development of actomyosin in developing rat muscle. Mus nor-
vegicus (Mammalia)

d. The interaction of the roof of the archenteron upon the nervous system.
Amblystoma mexicanum (Amphibia)

DE NICOLA, M. Dr Sc. — 1st. di Genet. dell'Univ. di Napoli, Fac. de Sci.,
Via Mezzocannone 8, NAPOLI, Italia.

a. Calcium distribution in early development of sea urchin eggs. Paracen-
trotus and Avbacia

b. Phosphatase distribution in Crustacean eggs. Cymothoids and Asellus
NICOLETTI, B. — 1st. di Biol, gen., Fac di Med., S. Pietro, PERUGIA,

a. Anelli di Liesegang e sviluppo embrionale. Bufo (Anfibi) Italia.

NIEUWKOOP, P. D. Phil.Dr — Hubrecht Lab., Internat. Embryol. Inst.,
Janskerkhof 2, UTRECHT, Holland.

a. Early development of Xenopus laevis from fertilization till end of neuru-
lation. (Anuva) (Normal Table)

b. The influence of chloramine-compounds on the early development
(neurulation and formation of the central nervous system) of the
Amphibian egg. Triturus alpestris and Tt. taeniatus (in collaboration
with F. E. LEHMANN)

c. Analysis of the regulative potencies of the invaginating archenteron
roof and the induced neural plate along the dorso-ventral and cranio-
caudal axes in the Amphibian egg by heteroplastic transplantation of
parts of the dorsal blastoporal lip. Triturus alpestris, taeniatus and
cristatus (in collaboration with S. TOIVONEN)

d. Analysis of the neural induction. Transfer of activating substances in
horizontal direction through presumptive ectoderm and subsequent or-
ganisation of a nervous system, (heteroplastic transplantation of ecto-
derm). Triturus taeniatus, alpestris and cristatus (Amphibia) (in col-
laboration with Miss A. KREMER and Miss E. BOTERENBROOD)

e. Experimental analysis of the gastrulation process in the Anuran species
Xenopus laevis (Daud.) (vital-staining and transplantation).

f. Experimental analysis of the neurulation process in Xenopus laevis

(Anurans) (in collaboration with Miss M. F. C. van EGMOND)
NIU, M. C. Dr — Dept of Biol. Sci., Stanford Univ., STANFORD, Cal.,
U.S.A.

a. The differentiation of macrophages into melanophores following their
ingestion of pigmentary debris released by degeneration of preexisting
melanophores. (A^mphibians) (in collaboration with V. C. TWITTY)

b. The origin of chromatophores of the salamander tail. (Amphibians) (in
collaboration with V. C. TWITTY)

c. Factors influencing pigment differentiation in amphibian melanoblasts.
(in collaboration with V. C. TWITTY)

Niu 66 Okad

d. The transformation of differentiated xanthophores into typical melano-
phores. (Amphibians) (in collaboration with V. C. TWITTY)

e. The differentiation of single isolated gastrula ectoderm cells cultured
under special conditions in vitro. (Amphibians) (in collaboration with
V. C. TWITTY)

f. The migratory behaviour of single neural crest melanoblasts isolated in
capillary tubes of extremely small bore. (Amphibians) (in collaboration
with V. C. TWITTY)

NOVIKOFF, A. B. Ph.D., Prof. — Dept of Anat, Univ. of Vermont,

Coll. of Med., BURLINGTON, Vt, U.S.A.

(no data received over this year)
NUESCH, H. DrSc, P.D. — Zool. Anstalt der Univ., Rheinsprung 9,

BASEL, Schweiz. (no data received over this year)

NIJENHUIS, E. D. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,

Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.

DUYKER— de BEER, Miss W. H. T. van HEESCH, J. C. N. KOK,

J. W. KUIPER, Miss R. P. van LOO, Miss J. E. H. SMIT and

W. L. van UTRECHT)
NIJENHUIS, L. E. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,

Holland,
a. Developmental physiology of mutants. Drosophila melanogaster (Insecta)

(in collaboration with Miss E. C. BOTERENBROOD, F. J. OPPEN-

OORTH and N. SPRONK)
NYHOLM, K. G. Fil. Dr — Uppsala Univ., Zool. Inst., UPPSALA,

Sweden.

a. Development of the Echinoderids. (Vermes)

b. Development of Labidoplax buskii. ( Echinodermata)

O'BRIEN, J. P. Ph.D. — Dept of Biol., Marquette Univ., 1131, West
Wisconsin Ave, MILWAUKEE 3, Wis., U.S.A.

a. Etablishment of anuran renal carcinoma in Urodeles. (Amphibia)

b. Influence of Urodele limb field on anuran cancerous cells. Rana pipiens,
Triturus viridescens and Amblystoma spp. (Amphibia)

c. Regeneration in Urodele limb portions situated in reversed proximo-
distal polarity. (Amphibia)

d. State of determination of the amphibian limb blastema. Triturus viri-
descens, Rana pipiens and Amblystoma spp.

O'CONNOR, R. J. M.D., D.T.M. — Westminster Med. School, Horsferry
Rd, LONDON S.W. 1, England,
a. The metabolism of cell division and cell differentiation. Vertebrates
ODfi, Miss E. Arts — Anat.-Embryol. Lab. of the Univ. of Leyden, Fac.
of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Holland,
a. Development of large vessels, especially pulmonary vessels, aorta and
ductus arteriosus Botalli. Rat and Man (Mammals)
OKADA, T. — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept
of Sci., Kyoto Univ., KYOTO, Japan.

a. Developmental mechanism of entoderm differentiation. Triturus pyrrho-
gaster and Hynobius nebulosus (Amphibia)

b. Role of the yolk mass in early morphogenetic movement. Triturus pyrrho-
gaster and Hynobius nebulosus (Amphibia)

Okaz 67 Orsi

OKAZAKI, Miss K. — Fac. of Sci., Dept of Biol., Embryol. Section, Tokyo

Metropolitan Univ., Meguro-ku, TOKYO, Japan,
a. Metamorphosis of partial larvae of Peronella (a sand-dollar). (Echinoi-

dea)
OKSCHE, A. A. — Anat. Inst, der Univ., Robert Koch Str. 6, MARBURG/

Lahn, Deutschland.

a. Anderungen des Kaulquappen-Wachstums nach beiderseitiger Augen-
Exstirpation. Es soil hierbei die Rolle des Hypophysen-Zwischen-
hirn-Systems und der Epiphyse untersucht werden. Larven von Bufo
vulgaris (Amphibia)

b. Die Feinstruktur der Sinneszellen des Organon frontale bei qualitativ
und quantitativ modifiziertem Lichtreiz. Verhalten der spezifischen, mit
Eisen-Haematoxylin farbbaren Zellstrukturen wahrend des Individual-
zyklus. Larven von Bufo vulgaris (Amphibia)

OLIVO, O. M. Med. Dr, Prof. — 1st. di Istol. e Fisiol., Via Belmeloro 8,

BOLOGNA, Italia.

(no data received over this year)
OLSSON, R. — Zootom. Inst., Univ. of Stockholm, 116, Drottninggatan,

STOCKHOLM, Sweden,
a. Development and anatomy of the nuclei and nerve fibres in the brain.

Polypterus (Brachiopterygii)
OMODEO, P. Dr Sc. — 1st. di Biol, e Zool. gen., Fac. di Med., Piazza

S. Agostino 4, SIENA, Italia.

a. Embryology and teratology in Oligochaeta.

b. Gametogenesis in Oligochaeta. (in collaboration with students)
OORT, J. — Lab. tor Exper. Histol., Fac. of Med., Univ. of Leyden, Was-

senaarseweg, Boerhaavekwartier, LEIDEN, Holland,
a. Development of the anterior hypophysis of the black-headed gull. Larus
ridibundus (Aves)
OPPENHEIMER, Miss J. M. Ph.D. — Dept of Biol., Bryn Mawr Coll.,
BRYN MAWR, Pa, U.S.A.

a. Studies on early organization of blastoderm. Fundulus heteroclitus
(Teleostei)

b. Studies on development of structure and function of central nervous
system. Fundulus heteroclitus (Teleostei)

OPPENOORTH, F. J. — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT, Holland,
a. Developmental physiology of mutants. Drosophila melanogastev (Insecta)
(in collaboration with Miss E. C. BOTERENBROOD, L. E. NIJEN-
HUIS and N. SPRONK)
ORLANDI, Miss A. Dr — 1st. di Zool. e Anat. comp., Via Celoria 10,
MILANO, Italia,
a. Nucleoproteins and myosin. (Vertebrata)
ORLOWSKI, A. B.Sc. — Dept of Endocr., Fac. of Med., Med. Highschool
of Lodz, Nowotki 137, LOD2, Poland,
a. The influence of hormones on metamorphosis of Xenopus laevis. (Am-
phibia) (in collaboration with A. BER)
ORSINI, Mrs M. W. Ph.D., B.A., U.S. Public Health Fellow, Nat. Cancer
Inst. — Dept of Anat., Univ. of Wisconsin, MADISON, Wis., U.S.A.
a. Development and reproduction in the hamster, with emphasis on the
uterine giant cells. Cricetus (Mammalia)

Orsk 68 Pasq

ORSKA, Miss J. Ph.D. — Zaklad Anat. Porownawczej, Inst. Zool. Uniw.,
ul. Sienkiewicza 21, WROCLAW, Poland,
a. Development of the vertebral column centra in Salmonidae and Cyprino-
dontidae. (Teleosts)
ORTOLANI, Miss G. Dr — 1st. di Zool., Via Archirafi 18, PALERMO,
a. Investigations on early development in Teleosts. (Pisces) Italia.

ORTS LLORCA, F. Prof. — Lab. de Anat. y Embryol., Fac. de Med.,
CADIZ, Spain.

a. Embryology of the heart. (Mammalia)

b. Embryology of the salivary glands. (Mammalia)

OSAWA. S. — Biol. Inst., Fac. Sci., Nagoya Univ., Chigusa-Ku, NAGOYA,
Japan.

a. Distribution of phosphatase and amino acids in early developmental
stages, studied histochemically. Rhacophorus schlegelii and Triturus
pyrrhogastev (Amphibia)

b. Regional distribution of amino acids in early developmental stages,
studied quantitatively. Triturus pyrrhogaster (Amphibia) (in collabo-
ration with T. YAM AD A)

OSTERTAG, Mile Y. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et
Lab. d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et
de Biol, generale, 12, Rue de l'Universite, STRASBOURG, France,
a. Role des hormones dans la differenciation primaire du sexe. La genese
de l'asymetrie du tractus genital des Oiseaux et la regression des Canaux
de Miiller par les methodes d'explantations. Gallus (Aves) (En col-
laboration avec Et. WOLFF)

OVERTON, Miss J. Dr — Dept of Zool., Univ. of Chicago, CHICAGO
37, 111., U.S.A.
a. Mitogenic stimulation of epidermis by fragments of nervous system.
(Urodela) (in collaboration with P. A. WEISS)

PADOA, E. Dr, Prof. — 1st. di Biol, e Zool. gen., Fac. di Med., Piazza
S. Agostino 4, SIENA, Italia.

a. Experimental sex reversal of larval Amphibians.

b. Control of metamorphosis. (Amphibians)

PAPI, F. Dott. in Sc. — 1st. di Zool. e Anat. comp. dell'Univ., Via A.
Volta 4, PISA, Italia,
a. Reproduction and cytology in Rhabdocoela. (Turbellaria)
PARDI, L. Lib.Doc. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4,
PISA, Italia,
a. Oviposition, parthenogenesis, cytology. (Insects)
PARMENTER, C. Ph.D., Prof. — Dept of Zool., Univ. of Pennsylvania,
PHILADELPHIA 4, Pa, U.S.A.
(no data received over this year)
PASCHMA, M. M.Ph. — Inst. Zool. Uniw. we Wroclawiu, Zaklad Zool.
Ogolnej, ul. Sienkiewicza 21, WROCLAW, Polska (Poland).
a. Embryology of Enchijtraeidae. (Oligochaeta)
PASQUINI, P. Ph.D., Prof. — 1st. di Anat. comp.. Via Belmeloro 8,
BOLOGNA, (103), Italia.

a. Effects oi antimitotics on early development and on lens-regeneration.
Rana esculenta, Triton and Axolotl (Amphibia)

b. Effects of antimitotics on the regeneration of peripheral nerves. Urodela
and Anura (Amphibians) (in collaboration with S. LEGHISSA)

Pass 69 Penn

PASSALACQUA, Miss A. Dr — 1st. di Zool., Via Archirafi 18, PALER-
MO, Italia,
a. Combined xenoplastic explantations of tail buds in Amphibians.

PASTEELS, J. J. M.D., Agr. es Sci., Prof. — Lab. d'Anat. et d'Embryol..
Fac. de Med. de l'Univ., 97, Rue aux Laines, BRUXELLES, Belgique.

a. Centrifugation of amphibian blastula-gastrula. (Various sp. of Urodela
and Anura)

b. General survey of turtle development. Chrysemis, Pseudemys and
Chelone

c. Cytochemical observations on the first stages of Amphibia, various
species, (in collaboration with J. BRACHET)

d. Photometric quantitative determinations of desoxyribonucleic acid
(D.N. A.) in resting cells, mitosis, spermatogenesis and development.
(Vertebrates) (in collaboration with L. LISON)

e. The early development of Xenopus laevis from late neurula stage to
an advanced tail-bud stage (esp. morphological data for experimental
work). (Anura, Amphibia) (Normal Table)

PATTEN, B. M. Ph.D., Prof. — Dept of Anat, Univ. of Michigan, Med.
School, 2500 East Med. Bldg, ANN ARBOR, Mich., U.S.A.

a. Development of heart (especially later stages of its partitioning).
Developmental defects of heart (especially interatrial). Physiology of
embryonic heart (especially development of conduction system). Gallus,
Sus and Homo (Higher Vertebrates)

b. Developmental defects of nervous system, particularly types involving
local overgrowth. Homo (Mammalia)

PEACOCK, A. M.B., B.S., M.Sc, M.R.C.S., L.R.C.P. — Anat. Dept,

London Hosp. Med. Coll., Univ. of London, Turner Str., LONDON

E 1, England,
a. Investigation of development of vertebral column and intervertebral

joints. Man (Mammals)
PEASE, D. C. Dr, Prof. — Dept of Zool., Coll. of Phys. and Surg.,

Columbia Univ., NEW YORK City, N.Y., U.S.A.

(no data received)
PEERS, Miss D. }. — Dept of Entomol. and Zool., Ontario Agricultural

College, GUELPH, Ont., Canada,
a. An investigation into the spawning habits and early development of

Cyprinus carpio. (Osteichthyes)
PEHRSON, G. T. Dr Phil., Prof. — Zootom. Inst., Univ. of Stockholm,

116, Drottninggatan, STOCKHOLM, Sweden,
a. Development and morphology of the skull and of the lateralis system.

Osteoglossids and Characinids (Pisces)
PENNERS, A. Prof. — Zool. Inst, der Univ. Wurzburg, Naturw. Fak.,

Rontgenring 10, WURZBURG, Deutschland.

a. Regeneration auf verschiedenen Altersstadien von Tubifex rivulorum.
(Clitella) (Oligochaeta)

b. Cytochemische Untersuchungen der Oogenese und Spermatogenese von
Tubifex rivulorum. (Clitella) (Oligochaeta)

c. Beeinflussung der Regeneration bei Tubifex rivulorum durch Naphta-
chinon und Phenanthrenchinon. (Clitella) (Oligochaeta)

d. Entwicklung des Eies von Cyclops viridis unter Beeinflussung durch
Colchicin und Rontgenstrahlen. (Crustacea)

Pent 70 Pflugfelder

PENTZ, Miss K. M.Sc. — Zool. Inst., Univ. of Stellenbosch, STELLEN-
BOSCH, South Africa,
a. Ontogenesis of the skull. Hynobius fuscus (Urodela, Amphibia)
PERLMANN, H. P. — Wenner-Grens Inst, for exper. Biol., Norrtullsgatan
16, STOCKHOLM 23, Sweden,
a. Serological and chemical studies on the proteins of developing sea urchin
eggs. Paracentrotus lividus and Athacia lixula (Echinodermata)
PERRI, T. Dott., Prof. — 1st. di Anat. comp. dell'Univ. di Roma, Fac. di
Sci., Via Borelli 50, ROMA, Italia.

a. Ricerche sull'induzione di arti soprannumerari mediante trapianti di parti
di ibridi o di embrioni irradiati con raggi X. Bufo vulg., B. viridis (Anfibi)

b. Ricerche su trapianti e espianti tra anfibi anuri e urodeli alio scopo di
indagare i processi di regolazione, differenziazione nel quadro dei pro-
blemi della costituzion" biokgica. (in collaboration with G. COTRONEI
and Mrs L. URBANI-MISTRUZZI)

c. Gli incroci reciproci tra Bufo vulgaris e Bufo viridis studiati con la tecnica
dei trapianti. (Anfibi)

d. L'azione biologica dei raggi X su embrioni e larve di Anfibi studiata
con la tecnica dei trapianti.

PERRY, J. H. Ph.D., Prof. — Dept of Anat., Baylor Univ., Coll. of Med.,
1200 M.D. Anderson Blvd. Texas Med. Center, HOUSTON 5, Tex.,
U.S.A.

a. Differentiation in the nervous system. Amblystoma (Amphibia)

b. Vascular patterns in the developing nervous system. Homo sapiens

c. Studies on regeneration of the central nervous system. Canis (Mammalia)
PESONEN, S. Phil.Dr — Zool. Lab. of the Univ. of Turku, TURKU,

Finland.

a. The parthenogenetic development of unfertilized ova induced by chemical
stimulation. Albino rat (Mammals)

b. The effect of substituted acetic acids on the early ontogenetic develop-
ment. Bufo and Rana (Anura) and Triturus (Urodela)

c. On the effect of some proteins on the further development of chemically
activated egg-cells in albino rats. (Mammals)

PETER, K. Dr, Prof. (Emer.) — BIRKENSTEIN, Post FISCHBACHAU,

Oberbayern, Deutschland.
PETZOLD, R. — Dept of Zool., Univ. of Chicago, CHICAGO 37, 111.,

U.S.A.

a. Cytological and electron microscopic studies on lens induction. Gallus
(Aves) (in collaboration with P. A. WEISS and M. McKEEHAN)

b. Embryonic effects of organ-specific antibodies combined with radioactive
tracers. Gallus domesticus (Aves) (in collaboration with P. A. WEISS)

PFLEGER, Mile D. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et
Lab. d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de
Biol, generale, 12, Rue de l'Universite, STRASBOURG, France,
a. Role des hormones dans la differentiation sexuelle. Etudes biochimiques
sur la regression des canaux de Miiller chez les Oiseaux. Gallus (Aves)
(En collaboration avec Et. WOLFF)

PFLUGFELDER, O. Dr rer. nat., Prof. — Zool. Inst, der Landwirtschaftl.
Hochschule, STUTTGART-HOHENHEIM (Ha), Deutschland.
a. Funktion der inkretorischen Drusen der Insekten, mit bes. Beriicksich-
tigung der Metamorphose. Carausius

Pflugfelder 71 Pletzen

b. Tumorentstehung nach Storung des Hormonhaushalts. (Evertebrata und
Vertebrata)

c. Wachstum und Differenzierung der Ganglienzellen des Mesencephalon
von Verre6raren nach Exstirpation der Augen.

PHILLIPS, R. J. S. B.Sc. — Med. Res. Council. Inst, of Anim. Genet.,
West Mains Rd, King's Buildings, EDINBURGH 9, U.K.
a. Developmental study of a new fifth-toe Polydactyly character in Mus
musculus. (Mammalia)

PIATT, J. A.B., M.A., Ph.D., Assoc. Prof. — Dept of Anat., Univ. of
Pennsylvania, School of Med., PHILADELPHIA 4, Pa, U.S.A.

a. Transplantation of brachial cord segments in Amblystoma punctatum
embryos. With a view to analyzing the factors responsible for normal
cord structure and function; i.e. is continuity of neural axis necessary
for the normal form and function of specific parts? (Amphibia)

b. Survey of the motor regions of the brain of Amblystoma. With a view
to a morphological and functional separation of each. (Amphibia)

PIEPHO, H. Dr Phil., Prof. — Zool. Inst, der Univ. Gottingen, Mathem.-
Naturw. Fak., Nicolausbergerweg 75, GOTTINGEN, Deutschland.
a. Metamorphose der Insekten.

PINCUS, G. Dr, Prof. — Tufts Coll., Med. School and Worcester Foun-
dation for Exper. Biol., 222, Maple Ave, SHREWSBURY, Mass.,
U.S.A. (no data received)

PIOTROWSKA, J. — Inst, of Histol. and Embryol., Med. Acad., GDANSK,
Poland,
a. The ultraviolet influence on eggs under various experimental conditions.
Rana temporaria (Amphibia)

PISANO, A. Dr Biol.Sc. — Inst, de Zool., Univ. Nac. de Tucuman, Miguel
Lillo 205, TUCUMAN, Argentien, S. America.

a. Parabiosis between pure breed and hybrid Urodela. Triturus cristatus
and T. vulgaris

b. El desarrollo del Telmatobius schreiteri. (Anfibio, Anuvo)

c. Trasplantos cruzados de regiones ectodermicas entre larvas de distinctas
formas geneticas de Leptodactylus ocellatus. (Anfibio, Anuro)

d. Fecundacion cruzada entre Telmatobius schreiteri e Hyla raddiana.
(Anfibio, Anuro)

CASTIGLI PITOTTI, Mrs M. Dott. — 1st. di Biol, gen., Fac. di Med.,
S. Pietro, PERUGIA, Italia.

a. Natura della gastrulazione senza segmentazione. Petromyzon fluviatilis

b. Azioni e reazioni nella metamorfosi degli Anfibi. Bufo vulgaris

c. Fermenti embrionali. Petromyzon (Ciclostomi)

PLANQUE, B. de — Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2,

UTRECHT, Holland,
a. Regulation potencies in the neural plate. Formation of neural crest by

regulation after implantation of young neural plate tissue in the ventral

side of neurulae, or by homogenetic induction after implantation in middle

gastrulae (heteroplastic transplantation). Triturus taeniatus, alpestris

and cristatus (Amphibia)
PLETZEN, R. van M.Sc. — Dept of Zool., Univ. of O.F.S., BLOEM-

FONTEIN, South Africa, (stud, of Sool. Inst., STELLENBOSCH)
a. Ontogenesis and morphogenesis of the breast-shoulder apparatus (and

of skeletogenous strata). Xenopus laevis (Anura, Amphibia)

Pletzen 72 Rap

b. Ontogenesis of skeleton and muscles of shoulder girdle and forelimbs

of Xenopus laevis. (Anura, Amphibia) (Normal Table)
PORTMANN, A. Dr Phil., Prof. — Zool. Anstalt der Univ., Rheinsprung

9, BASEL, Schweiz.

(no data received over this year)
POULSON. D. F. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ., NEW

HAVEN 11, Conn., U.S.A.

a. Comparative studies on pole cells and mid gut differentiation in the
genus Drosophila (Diptera).

b. Experimental studies on localization in the early embryo of Drosophila.

c. Investigations on chromosomal control of early development in Drosophila
melanogaster by use of lethal chromosomal deficiencies. (Diptera)

PRETO PARVIS, Mrs V. Dott.Med., Prof. — 1st. di Anat. umana norm.
dell'Univ. di Milano, Via Mangiagalli 31, MILANO, Italia.

a. Histogenesis and angiogenesis in the suprarenal gland of the cat. Felis
catus (Mammalia)

b. Modifications of contents in nucleinic acids and of the nuclear apparatus
in nervous cells during development in relation with their degree of
growth and functional maturity. (Methods: Piekarski-Robinow; Feulgen;
Golgi; Cajal) (Mammalia)

c. Study of the development of cytoarchitecture and genesis of the furrows
in some areas of the cerebral cortex in Man. (Mammalia)

RADECKA, E. M.Ph. — Inst. Zool., Uniw. we Wroclawiu, Zaktad Zool.
Ogolnej, ul. Sienkiewicza 21, WROCLAW, Polska (Poland),
a. Mitochondria during the development. Parascaris equorum (Nematoda)
RADKOWA, M. Vet. Phys. — Zaklad Histol. i Embryol., Uniw. Wro-
clawskiego, ul. Chalubinskiego 6a, WROCLAW, Polska (Poland),
a. Early developmental stages in mammals, (in collaboration with Z.
SEMBRATOWA)
RAMSEY, Mrs E. M. A.B., M.D., Res. Assoc. — Dept of Embryol.,
Carnegie Inst, of Washington, Wolfe and Madison Strs, BALTIMORE
5, Md, U.S.A.
a. Placentation — Study of vascular pattern of endometrium throughout
pregnancy. Macaca mulatta (Rhesus monkey) (Mammalia)
RANDALL, J. T. Prof., F.R.S. — M.R.C. Biophysics Res. Unit, King's
Coll., Strand, LONDON W.C. 2, England.

a. Spermatogenesis of Vivipara vivipara, studied by classical techniques and
by phase-contrast, polarised light, ultra-violet and electron microscopy.
(Gastropoda) (in collaboration with E. }. HANSON and S. T.
BAYLEY)

b. Cytogenesis of vertebrate striped muscle, studied in the electron micro-
scope, and with the aid of tissue culture techniques, (in collaboration
with E. J. HANSON and S. T. BAYLEY)

RANZI, S. Dr, Prof. — 1st. di Zool. e Anat. comp., Univ. di Milano, Via
Celoria 10, MILANO, Italia,
a. Proteins in embryonic development. (Amphibia) and (Echinodermata)
RAPPAPORT Jr, R. B.S., M.S. — Osborn Zool. Lab., Yale Univ., NEW
HAVEN 11, Conn., U.S.A.
a. Regional density changes in the developing embryo in relation to growth
and differentiation. Rana pipiens and Amblystoma punctatum (Am-
phibia) (under direction of J. S. NICHOLAS and E. J. BOELL)

Rau 73 Reh

RAUNICH. L. Ph.D., M.D. — 1st. di Anat. comp., Via Belmeloro 8,
BOLOGNA, (103), Italia.

a. Development of blood and vascular system in Petromyzon, Amia and
Lepidosteus. (Petromijzontidae, Cyclostomes and Osteoganoids)

b. Action of growth-substances on tail-regeneration. Rana, Bufo (Am-

c. Determination of neural plate. Triton, Axolotl (Amphibia) phibia)

d. Lateral mesoderm explants in tail bud stage. (Anura)

RAVEN, Chr. P. F.R.A., Dr Sc, Prof. — Zool. Lab. der Rijks Univ.,
Janskerkhof 3. Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2,
UTRECHT, Holland.

a. Nature of polar plasms. Limnaea stagnalis (Gastropoda)

b. Influence of Li on the development of Limnaea stagnalis. (Gastropoda)

c. Development of isolated blastomeres. Limnaea stagnalis (Gastropoda)

d. Development of neural crest. Xenopus laevis (Amphibia)
(Normal Table)

e. Development of head organs in normal and Li-treated embryos. Limnaea
stagnalis (Gastropoda)

RAWLES, Miss M. E. Ph.D. — Dept of Biol., The John Hopkins Univ.,
Charles and 34th Strs, BALTIMORE 18, Maryland, U.S.A.

a. Analysis of the development of regional differences in feather color
pattern. Factors affecting the distribution and development of melanin
pigment-forming cells. Gallus domesticus (Aues)

b. Analysis of the processus involved in the development of pigmentation
and pigmentation patterns in the hair and skin of mammals. Hooded
Rat and C57 Black Mouse

RAYNAUD, A. Dr es Sc. — Lab. d'Embryol. du Lab. Pasteur de l'lnst.
du Radium, 26, Rue d'Ulm, PARIS Ve, France.

a. Etude du developpement embryonnaire normal de l'appareil genital de
la Souris. (Mammiferes)

b. Recherches sur le developpement embryonnaire des glandes prostatiques
des Mulots (Apodemus sylvaticus) de sex femelle. (Mammiferes)

c. Recherches experimentales sur les facteurs du developpement des dif-
ferentes parties de l'appareil genital des embryons de Souris. (Mam-
miferes) :

Etude de Taction des hormones sexuelles sur le developpement de
l'appareil genital des embryons.

Etude des capacites de developpement des differentes parties de l'ap-
pareil genital des embryons, apres destruction des ebauches de l'hypo-
physe et des glandes genitales. (en collaboration avec M. FRILLEY)

d. Recherches sur le developpement embryonnaire de la glande mammaire
de la Souris. (Mammiferes) (en collaboration avec M. FRILLEY)

REEVE, E. C. R. B.A., Ph.D. — Genet. Lab., Anim. Breeding and Genet.
Res. Organ., Inst, of Anim. Genetics, West Mains Rd, King's Buildings,
EDINBURGH 9, U.K.
a. Developmental study of lines selected for large and small body size
in Drosophila melanog aster . (Insecta) (in collaboration with F. W.
ROBERTSON)

REHM, Frl. M. — Zool. Inst, der Univ. Tubingen, u. Max-Planck-Inst. fur
Biol.. Holderlinstr. 12, TUBINGEN, Deutschland.
a. Histogenese inkretorischer Organe in der Metamorphose bei der Wild-
form und bei Mutanten von Ephestia. (Lepidoptera)

Rei 74 Ridley

REINBOLD, R. Lie. es Sci. — Lab. d'Embryol. et de Teratol. exp. de la
Fac. des Sci. de l'Univ. de Strasbourg, 12, Rue de L'Universite, STRAS-
BOURG, France,
a. Differenciation sexuelle normale et conditionnement hormonal du tuber-
cule genital chez l'embryon de Poulet. Gallus (Aves)

REIS, R. H. Ph.D. — Dept of Biol., Marquette Univ., 1131, West Wisconsin
Ave, MILWAUKEE 3, Wis., U.S.A.
a. A study of the anomalous renal vessels and inferior vena cava in dif-
ferent groups of mammals. Canis familiaris and Felis domestica

REMOTTI, E. Prof. — 1st. di Anat. e Fisiol. comp., Univ. di Genova,
GENOVA, Italia.

a. Ricerche di fisioembriologia sull'uovo di polio. (Aves)

b. Correlazione tra vasi e differenziazione epiteliale, e riferimenti al pro-
blema delle neoplasie. (Vertebrata)

c. Fattori funzionali nella differenziazione del sistema vasale. (Vertebrata)
REVERBERI, G. Dr, Prof. — 1st. di Zool.. Via Archirafi 18, PALERMO,

Italia,
a. The morphogenetic role of the yolk material in Amphibians, studied by
means of heterospecific transplantations.
REYER, R. W. Ph.D. — Dept of Anat., The School of Med., Univ. of
Pittsburgh, PITTSBURGH 13, Pa, U.S.A.

a. An experimental analysis of lens regeneration in Amphibia. Triturus
viridescens, Salamandra salamandra, Amblystoma punctatum

b. A study of lens induction in amphibian embryos. Triturus viridescens,
Amblystoma punctatum

REYNOLDS, S. R. M. A.B., M.S., Ph.D., Member — Dept of Embryol.,
Carnegie Inst, of Washington, Wolfe and Madison Strs, BALTI-
MORE 5, Md, U.S.A.

a. Factors in fetal maturity. Homo, Macaca rhesus, Lepus cunic. and Ovis

b. Fetal vascular physiology. Homo, Lepus and Ovis (Mammalia)

c. Uterine contraction patterns in women. (Mammalia)
REYROLLE, Mile J. Lie. es Sc. — Lab. de Zool., Fac. des Sci., 1, Avenue

Vercingetorix, CLERMONT, France.

a. Developpement du blastoderme de cane pendant les premieres heures
de l'incubation. (Aves)
RHINES, R. B.S., M.S., M.B., Ph.D., M.D., Asst Prof. — Dept of Anat.,
School of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa,
U.S.A.

a. Development of bone marrow in rabbit's ear tissue chambers. (Mam-
mals) (In collaboration with R. G. WILLIAMS)
RHODES, S. M.A. — Dept of Zool., Duke Univ., DURHAM, N.C..
U.S.A.

a. The lens induction in several amphibian species. Excision and transplan-
tation of the presumptive optic and lens areas. Rana clamitans, Rana
catesbiana (under direction of E. C. HORN)
RIDLEY, Miss E. J. M.S. — Dept of Biol. Sci., Univ. of Pittsburgh, PITTS-
BURGH 13, Pa, U.S.A.

a. The distribution of radio-phosphorous (P 32 ) in the developing embryos
of Rana sylvatica and Rana pipiens as demonstrated by radioautographic
methods. (Early cleavage to completed operculum) (Amphibia, Anura)
(in collaboration with J. F. GENNARO Jr.)

Ridley 75 Rollhauser

b. The distribution of radio-phosphorous (P :{ -) in metamorphosing larvae

of R. sylvatica and R. pipiens as shown by radioautographs. (From

complete operculum through the larval change) (Amphibia, Anura) (in

collaboration with J. F. GENNARO Jr.)
RISLER, H. Dr rer. nat. — Zool. Inst, der Univ. Tubingen, u. Max-Planck-

Inst. fur Biol., Holderlinstr. 12, TUBINGEN, Deutschland.
a. Kernwachstum in verschiedenen Geweben wahrend der Metamorphose

bei Ephestia kiihniella. (Ptychopoda seriata, Lepidoptera)
RISLEY, P. L. A.B., M.S., Ph.D., Prof. — Dept of Biol., Univ. of Oregon,

EUGENE, Ore., U.S.A. (no data received over this year)

RIZZOLI, C. M.D. — 1st. di Istol. e Fisiol. gen., Via Belmeloro 8. BO-
LOGNA, Italia. (no data received over this year)
ROBERTSEN, Mrs F. M. B.Sc. — Univ. Dept of Genet., Inst, of Anim.

Genet., West Mains Rd, King's Buildings, EDINBURGH 9, U.K.
a. Morphological and experimental investigation of coiling in Limnaea

peregra. (Mollusca)
ROBERTSON, F. W. B.Sc, Ph.D. — Genet. Lab., Anim. Breeding and

Genet. Res. Organ., Inst, of Anim. Genet., West Mains Rd, King's

Buildings, EDINBURGH 9, U.K.
a. Developmental study of lines selected for large and small body size in

Drosophila melanog aster. (Insecta) (in collaboration with E. C. R.

REEVE)
ROBERTSON, G. G. Ph.D., Prof. — Dept of Anat., Coll. of Med., Baylor

Univ., 1200 M. D. Anderson Blvd. Texas Med. Center, HOUSTON 5,

Tex., U.S.A.

a. The appearence and development of ossification centers in human
embryos. (Mammalia)

b. The production of anomalies in rat embryos by nitrogen mustards. Mus
norvegicus (Mammalia)

ROCK, J. M.D. — Free Hospital for Women, 245, Pond Ave, BROOK-
LINE, Mass., U.S.A.

a. Development of human ova from fertilization to 14 days (first missed
menstrual period). (Mammalia) (in collaboration with A. T. HERTIG)

b. A morphologic description of 3 segmenting human embryos; a 2-cell tubal
ovum, a 30-cell early blastula (4 days-uterine), and a 60-cell blastula
A]/2 — 5 days-uterine). (Mammalia) (in collaboration with A. T. HER-
TIG)

ROETHELI, A. Dr Phil. — BOREN a.A., Kant. Bern, Schweiz.

a. Physiologie des Knochenfischspermas. (Pisces)
ROGERS, K. T. A.B., M.A. — Biol. Lab's, Harvard Univ., Divinity Ave,
CAMBRIDGE 38, Mass., U.S.A.

a. Survey of experimental production of cyclopean fish embryos; study
of their morphology, especially nerve tracts. Fundulus heteroclitus
(Pisces)

b. Study of the development of the eye and optic tracts of chick and of
owl embryos, as compared with fish. Gallus domesticus, Bubo virginianus,
Otus asio (Aves)

ROLLHAUSER, H. Dr Med. — Anat. Inst, der Univ., Robert Koch Str. 6,
MARBURGlLahn, Deutschland.
a. Submikroskopische Strukturanderungen der kollagenen Fasern wahrend
des Wachstums. Mensch (Sauger)

Rollhauser 76 Roth

b. Polarisationsoptische und rontgenographische Analysen verschieden alten
Sehnengewebes. Mensch (Sauger)
ROOFE, P. G. Ph.D.. Prof. — Dept of Anat, Univ. of Kansas, Med. School,
LAWRENCE, Kan., U.S.A.
a. Development of the central and peripheral nervous system in relation
to behavior patterns along Coghillian lines of investigation. Ambhj stoma
maculatum and tigrinum (Amphibia) (in collaboration with G. M. LEE)
ROSE, S. M. Ph.D., Assoc. Prof. — Dept of Zool., Univ. of Illinois,
URBANA, 111., U.S.A.

a. Dedifferentiation of normal and neoplastic tissues during limb regene-
ration in Amphibia.

b. Demonstration that tumor agents can acquire new tissue and regional
specificity. (Amphibia)

c. Regeneration of X-rayed amphibian limbs receiving unirradiated
epidermis.

ROSENBAUM, R. M. B.S. — Biol. Lab., Harvard Univ., CAMBRIDGE
38, Mass., U.S.A.

a. Cytochemistry of the egg. Rana pipiens (Anura), Triturus viridescens
(Salamandridae)

b. Chromosome phenomena in the early egg. Rana pipiens (Anura)
ROSIN, S. Dr, P.D. — Zool. Inst, der Univ. Bern, Sahlistr. 8, BERN,

Schweiz.
a. Analyse genetischer und experimenteller Borstendefekte bei Drosophila.
(Insecta)
ROSSETTI, F. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37,
111., U.S.A.
a. Factors determining size of Mauthner's cell. (Amphibia) (in collabora-
tion with P. A. WEISS)
ROSTAND, J. — 29, Rue Pradier, VILLE d'AVRAY, (Seine et Oise),
France.

a. Parthenogenese et gynogenese des Batraciens. Regulation chromosomique
par le froid.

b. Mutations de Batraciens (Polydactylie, Ectrodactylie, etc.): comporte-
ment hereditaire et physiologie genetique.

c. Modifications des noyaux au cours de l'ontogenese. (Batraciens)

d. Survie de l'ovule in vitro, a basse temperature. (Batraciens)
ROTHFELS, U. Ph.D. — Univ. of Colorado, Med. Center, Dept of

Pediatrics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A.

a. Study of differentiation of chick somites in explants (Spratt technique).
(Aves) (in collaboration with H. HERRMANN, L. LUBCHENCO
and J. McKENZIE)

b. Study of developmental disturbances related to nutritional deficiencies
investigated by application of anti-vitamins and anti-amino acids to the
intact egg and to explants (somites). In particular, it will be attempted
to define the factors which maintain the balance between myotome,
sclerotome and dermatome during differentiation of the somite and are
required for the normal development of the retina (possible connection
with retrolental fibroplasia of the premature human infant). (Aves)
(in collaboration with H. HERRMANN, L. LUBCHENCO and
J. McKENZIE)

Rotm 77 Sand

f ROTMANN, E. Dr phil. nat.. Prof. — Inst. f. Entw.physiol., Kerpener-
str. 13, KOLN-Lindenthal, Deutschland.

a. Regionale Induktion bei Amphibien. Triton

b. Regeneration der Extremitat. Triton (Amphibia)

RUDNICK, Miss D. Ph.D. — Osborn Zool. Lab., Yale Univ., NEW

HAVEN 11, Conn., U.S.A.
a. Histo- and cytogenesis of early embryonic tissues. Gallus (Aves)
RUGH, R. Dr, Prof. — Coll. of Phys. and Surg., Columbia Univ., NEW

YORK City, N.Y., U.S.A. (no data received)

RUNNER, M. N. Ph.D., Prof. — Roscoe B. Jackson Memorial Lab., Box

558, BAR HARBOR, Me, U.S.A. (no data received over this year)

RUNNSTROM, J. A. M. Ph.Dr, Med. Dr, Prof. — Wenner-Grens Inst.

for exper. Biol., Norrtullsgatan 16, STOCKHOLM 23, Sweden.

a. (Cf. work on the Institute). Physiology of fertilization and development
in Echinoderms.

b. Analyzation of the nature of the egg antifertilizin. (Echinodermata)
(in collaboration with A. MONROY, Marine Biol. Stat., WOODS
HOLE, Mass., U.S.A.)

RUSSEL, Miss E. S. A.B., M.A., Ph.D., Prof. — Roscoe B. Jackson Me-
morial Lab., Box 558. BAR HARBOR, Me, U.S.A.
(no data received over this year)

RUSSO, Miss E. — Dept of Zool., Univ. of Chicago, CHICAGO 37, 111.,
U.S.A.
a. Role of various tissue components in Urodele limb regeneration. Triturus
(Amphibia) (in collaboration with P. A. WEISS)

RYKE, P. A. J. M.Sc. — Dept van Dierk., Potchefstroom Univ., POT-
CHEFSTROOM. Suid-Afrika. (stud: Sool. Inst., STELLENBOSCH)

a. The ontogenesis of the dorsal myotomic (somatic) musculature of
Xenopus laevis. (Anura, Amphibia)

b. The ontogenesis of skeleton and muscles of the trunk region of Xenopus
laevis. (Anura, Amphibia) (in collaboration with A. L. SMIT)
(Normal Table)

SABBADIN, A. Dr — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Lore-
dan 6, PADOVA, Italia,
a. Determination of gonads. (Amphibia)
SACERDOTE, Miss M. Dr — Inst, of Comp. Anat., Via Giovanni Giolitti
34, TORINO, Italy,
a. Bilateral and unilateral removal of the ear vesicle to analyse the develop-
mental relationships between the latter and the lime sacs. Rana esculenta,
Bufo vulgaris (Amphibia) (in collaboration with A. GUARDABASSI)
SALZGEBER, Mile B. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et
Lab. d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et
de Biol, generate, 12, Rue de l'Universite, STRASBOURG, France,
a. Recherches sur Taction d'agents physiques et chimiques sur la dif-
ferentiation sexuelle.

Recherches sur l'intersexualite experimental produite par irradiation
aux rayons X. (Aves) (En collaboration avec Et. WOLFF)
SANDISON. Miss E. E. B.Sc. — Dept of Zool., Univ. of Cape Town.
RONDEBOSCH, South Africa. (Leaving in August 1950)
a. The identification of the larvae of some South African Barnacles with
notes on their life histories. (Cirripedia, several species).

Sant 78 Sch

m

SANTLER. Miss J. E. B.Sc. — Queen Mary Coll., Univ. of London, Mile

End Rd, LONDON E. 1, England,
a. Study of the development of Diplopoda (Myriapoda)
SATO, T. D.Sc, Dr phil.nat, Prof. — Biol. Inst., Fac. Sci., Nagoya Univ.,

Chigusa-Ku, NAGOYA, Japan.

a. Linsenbildende Potenz des Pigmentepithels von Urodelen. Hynobius
tokyoensis and Tritunis pyrrhogaster (Amphibia)

b. Restitution des Auges nach sukzessiver Entfernung von einzelnen Augen-
haute. Triturus pyrrhogaster (Amphibia) (unter Mitwirkung von
M. HASEGAWA)

c. Linsenregeneration bei Misgurnus. (Pisces) (unter Mitwirkung von
M. HASEGAWA)

SAUNDERS, J. W. Ph.D. — Dept of Biol., Marquette Univ., 1131, West
Wisconsin Ave, MILWAUKEE 3, Wis., U.S.A.

a. Identification of prospective pigment cells by means of vital dyes. Gallus
domesticus (Aves)

b. Factors affecting the rate of melanin synthesis in the embryonic feather
germ. Gallus domesticus (Aves)

c. The role of the ectoderm in the development of the wing of the fowl.
Gallus domesticus (Aves)

d. An analysis of the factors affecting tract-specificity in embryonic feather
areas. Gallus domesticus (Aves)

SAUSER, G. Dr, Dr, Mr, Prof. — Histol.-Embryol. Inst, der Univ. INNS-
BROCK, Tyrol, Austria.

a. Entwicklungsphysiologie der verschlussfahigen Arterien. Vorwiegend
Mensch (Mammalia)

b. Histophysiologie der Kerngrosse. (Evertebrata und Vertebrata)

c. Farbungs- und Konservierungstechnik. Mensch

SAWIN, P. B. Sc.D., Prof. — Roscoe B. Jackson Memorial Lab., Box 558,
BAR HARBOR, Me, U.S.A. (no data received over this year)

SCHECHTMAN, A. M. A.B., Ph.D., Prof. — Dept of Zool., Univ. of
California, LOS ANGELES 24, Cal., U.S.A.

a. Plasma proteins of the developing chick embryo. (Aves) (in collaboration
with G. W. NACE)

b. Evidence for the existence of distinctive embryonic plasma constituents
in the developing chick. (Aves) (in collaboration with O. A. SCHJEIDE)

SCHENK, R. Dr Med. — Anat. Inst, der Univ. Zurich, Gloriastr. 19,

Zurich, Schweiz.

a. Einfluss weiblicher Sexualhormone auf die Histogenese von Triton al-
pestris. (Amphibia)

b. Mikrokephalie durch Defektoperationen in der Gegend des Urmund-
grubchens von jungen Tnrongastrulae. Tr. alpestris (Amphibia)

SCHJEIDE, O. A. B.A., M.A., cand. Ph.D. — Dept of Zool., Univ. of

California, LOS ANGELES 24, Cal., U.S.A.

a. Evidence for the existence of distinctive embryonic plasma constituents

in the developing chick. (Aves) (in collaboration with A. M.

SCHECHTMAN)

SCHMIRLER, H. — (Addresse via) Zool. Inst, der Univ. Wurzburg, Natur-

wissensch. Fak., Rontgenring 10, WORZBURG, Deutschland. (im Lehr-

fach) nelida)

a. Regenerationsversuche an verschieden alten Tubifex rivulorum. (An-

Schn 79 Sedra

SCHNEIDER, M. }. M.S. — Univ. of Colorado, Med. Center, Dept of
Pediatrics, 4200 east Ninth Ave, DENVER 7, Col., U.S.A.

a. Chemistry of muscle differentiation, determination of actin and myosin
and phosphate fractions in muscle of chick embryos after the 7th day
of development (concluded) (Aves) (in collaboration with H. HERR-
MANN and B. J. NEUKOM)

b. Determination and fractionation of nucleoproteins and determination of
enzymes in chick somites from the 2nd to the 5th day of incubation and
in differentiating chick muscle from the 7th day of incubation to hatching.
(Aves) (in collaboration with H. HERRMANN and B. J. NEUKOM)

c. Chemical fractionation of cell nuclei and mitochondria of differentiating
muscle of chick. (Aves) (in collaboration with H. HERRMANN and
B. J. NEUKOM)

d. Histological examination of muscle development including quantitative
determinations of volume of somite columns, of cell number and of mitotic
index of somites, (in collaboration with H. HERRMANN and B. J.
NEUKOM)

SCHOTTE, O. E. Dr, Prof. — Dept of Biol., Amherst Coll., AMHERST,

Mass., U.S.A. (no data received)

SCHREIBER, B. Prof. — 1st. di. Zool. e Anat. comp., Via Celoria 10,

MILANO, Italia,
a. Bone induction. (Amphibians)
SCHRIER, Miss J. — Dept of Zool. and Entomol., Div. of Sci., Iowa State

Coll., AMES, Iowa, U.S.A.
a. Experiments on the visceral pouches of the chick to ascertain their

derivatives and especially the origin of the parathyroids. Gallus domes-

ticus (Aves) (in collaboration with H. L. HAMILTON)
SCHUE, Mile M. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.

d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol.

generale, 12, Rue de l'Universite, STRASBOURG, France.

a. Problemes relatifs a l'origine des cellules de regeneration chez les
Urodeles. Triturus (Amphibia)

b. Probleme de la reduction de la taille et du nombre de doigts du membre
posterieur de l'embryon de Poulet, sous l'influence des rayons X. Gallus
domesticus (Aves)

SCHWINCK, Frl. I. — Zool. Inst, der Univ. Tubingen, u. Max-Planck-Inst.

fur Biol., Holderlinstr. 12, TUBINGEN, Deutschland.
a. Metamorphoseveranderungen der Epidermis und inkretorischer Organe

bei Panorpa. (Insecta)
SCOTT, A. C. Ph.D. — Union Coll., SCHENECTADY, N.Y., U.S.A.

a. Factors affecting germinal vesicle breakdown in the egg of Chaetopterus
pergamentaceus. (Vermes)

b. Effect of respiratory-inhibitors on early development of marine eggs.
Urechis caupo (Vermes) and Arbacia punctulata and Dendraster eccen-
tticus ( Echinodermata)

c. Effect of temperature on the rate of intrusion of the first cleavage furrow
in Arbacia punctulata. (Echinoidea)

SEDRA, Shokralla N. B.Sc, M.Sc, Ph.D., F.Z.S. — Dept of Zool., Farouk
I Univ., Moharram Bey, ALEXANDRIA, Egypt,
a. On the morphology of the suprarostral cartilage and the mandibular
arch of the tadpoles of Bufo lentiginosus. (Amphibia)

Sedra 80 Shaver

b. Stages in the normal development of Bufo regularis. (Amphibia)

c. Metamorphosis of the jaws and their muscles correlated with the changes
in the animal's feeding habits. Bufo regularis (Amphibia)

d. The development of skull and visceral muscles of Xenopus laevis during
metamorphosis. (Amphibia) (Normal Table)

SEIDEL. F. Dr Phil., Prof. — Max Planck-Inst. f. Tierzucht und Tier-
ernahrung, (20a) Mariensee iib. Neustadt a. Rubenberge, (Britische
Zone), Deutschland.

a. Morphologische und physiologische Untersuchungen an der embryonalen
Entwicklung von Wirbeltieren. Kaninchen (Mammalia)

b. Morphologische und physiologische Untersuchungen an der embryonalen
Entwicklung von Insecten. Platycnemis und Gryllus (Hexapoda)

SEMBRAT, K. Ph.D., Prof. — Inst. Zool. Uniw. we Wrodawiu, Zaklad
Zool. Ogolnej, ul. Sienkiewicza 21, WROCLAW. Polska (Poland)

a. Experimental analysis of the early developmental stages of the Sea
Anemones. Sagartia leucolena ( Anthozoa)

b. Localization of the primary gonocytes in the early gastrula of Amphibians.

c. The morphogenetical functions of the thyroid gland in poikilothermic
Vertebrates. (Pisces, Amphibia and Reptilia)

d. Early developmental stages in the rat. Epimys norvegicus (Mammalia)
SEMBRATOWA. Z. M.D., Prof. — Zaklad Histol. i Embryol. Uniw.

Wroclawskiego, ul. Chalubinskiego 6a, WROCLAW, Polska (Poland).

a. Heteroplastic transplantation of the hind part of neural plate. Amblystoma
punctatum and A. tigrinum (Urodeles)

b. Analysis of the hind part of the neural plate in Anura. Rana palustris
and R. silvatica.

c. Early developmental stages in mammals, (in collaboration with M.
RADKOWA)

SENSENIG, E. C. B.A.. M.S.. Ph.D., Prof. — Schools of Med. and Dent.,
Med. Center of the Univ. of Alabama, 620, South 20th Str., BIRMING-
HAM 5, Ala., U.S.A.
(no data received over this year)

SHANER, R. F. Ph.D., F.R.S.C, Prof. — Dept of Anat. Univ. of Alberta,
Med. School, EDMONTON, Alberta, Canada.

a. A study of abnormal hearts in pig embryos corresponding to the third
month of human development. (Mammalia)

b. Study of abnormal pig embryos in relation to the cause of complete
and corrected transposition of the great vessels and ventricles of the
heart. Sus scrofa (Mammalia)

c. Study of a collection of abnormal pig embryos of an age corresponding
to the third month of human development with the aim of throwing light
on the development of various human abnormalities. Sus scrofa (Mam-
malia)

SHAPIRO, H. B.S., A.M., Ph.D., Prof. — Marine Biol. Lab., WOODS
HOLE, Mass., U.S.A.
(no data received over this year)

SHAVER, J. R. A.B., Ph.D. — Dept of Zool., Univ. of Missouri, COLUM-
BIA, Mo., U.S.A.

a. Initiation of artificial parthenogenesis in frog eggs. Rana fusca (Anura)

b. Immunological characteristics of embryonic cytoplasmic granules. Rana
fusca (Anura)

Shaver 81 Sing

c. Biochemistry of development of frog embryos. Rana fusca (Anura)

d. Biochemical and histological characterisation of effects of cytoplasmic
granules on growth of host cells of chorio-allantoic membranes of chick.
Gallus domesticus (Aves)

e. Cytochemical analysis of activating nature of cytoplasmic granules in
artificial parthenogenesis of frog eggs. Rana pipiens (Amphibia)

f. Immunological studies of specific reactions of cytoplasmic granules with
host cells (chorio-allantoic membranes). Gallus domesticus (Aves)

SHELLHAMER, R. H. B.A., M.A., Prof. — Dept of Anat.. Ohio State

Univ., COLUMBUS 10, Ohio, U.S.A.

(no data received over this year)
SHEN, S. C. Ph.D. — Osborn Zool. Lab., Yale Univ., NEW HAVEN 11,

Conn., U.S.A.

a. The dissociation of morphological and biochemical development in the
central nervous system of Ambly stoma punctatum. (Amphibia) (in col-
laboration with E. J. BOELL)

b. A comparative study of the development of cholinesterase, succinic
dehydrogenase, and respiratory activity in the central nervous system
of Ambly stoma punctatum. (Amphibia) (in collaboration with E. J.
BOELL)

c. Development of respiratory enzymes in rat muscle. (Mammals) (in col-
laboration with E. J. BOELL)

SHULOW, A. Dr — Dept of Zool., Hebrew Univ., JERUSALEM, Israel,
a. Ecological conditions of development of the eggs. Artificially induced
interruption of development (eggs) "diapause". (The changes in yearly
development cycles under influence of dryness.) Schistocerca gregaria,
Tmethis cisti, Anacridium aegyptium, Pareuprepocnemis syriaca and
Pezatettix judaica (Ovthoptera, Insecta)

SIGOT, A. — Inst, de Zool., Lab. de Biol, gener., Fac. des Sci. de Stras-
bourg, 12, Rue de l'Universite, STRASBOURG, France,
a. Etude de la sensibilite hereditaire au gaz carbonique chez Drosophila
melanogastet. (Insecta)

SILBERBAUER, Mrs B. I. B.Sc. — Dept of Zool., Univ. of Cape Town,
RONDEBOSCH, South Africa,
a. Structure and development of Cape Crawfish, Jasus Lalandii. (Deca-
poda)

SINCLAIR, J. G. B.S., M.S., Ph.D., Prof. — Dept of Anat., Med. Branch,
Univ. of Texas, GALVESTON, Tex., U.S.A.

a. Early human embryos, structure, conditions of implantation. (Mam-
malia)

b. Placental measurement, blood cell distribution and other observations
related to birth. Special attention to twinning. Human fetus (Mammalia)

c. Effects of urethane on reproduction and on the young across the placenta.
Mice C57 and CBA. (Mammalia)

SINGER, Miss J. B.A. — Dept of Zool., Univ. of Bristol, BRISTOL,

England,
a. The induction of regeneration in the hydroid, Cordylophora lacustris.
SINGER, M. A.M., Ph.D., Prof. — Dept of Anat., Harvard Med. School,

25, Shattuck Str., BOSTON 15, Mass., U.S.A.

a. Influence of nerves on regeneration of urodele limb. Triturus viridescens

b. Histology of limb and nerve regeneration in urodele. Triturus viridescens

Sinh 82 Sne

SINHA, T. P. B.S.. M.S., M.B., Prof. — Dept of Anat., Prince of Wales
Med. College, PATNA, Behar, India,
a. Physiology of the fetus. Changes in pulmonary blood volume at birth
and in early postnatal life. Guinea pigs (Mammals) (In collaboration
with W. F. WINDLE)
SIPPEL, T. O. A.B. — Osborn Zool. Lab., Yale Univ., NEW HAVEN 11,
Conn., U.S.A.
a. Correlation of the morphological, physiological and biochemical events
in the differentiation of the heart, with emphasis on the systems control-
ling rate. Amblystoma punctatum and Rana pipiens (Amphibia)
SKREB, N. Dr — Lab. d'Embryogenie comp., Coll. de France, Place Mar-
celin Berthelot, PARIS Ve, France,
a. Etude des substances necessaires a la croissance et a la differenciation du
blastoderme de l'oeuf de Truite, Salmo irideus, separe de son vitellus
et cultive in vitro. (Pisces) (en collaboration avec Ch. DEVILLERS)
SLIJPER, E. J. Dr, Prof. — Bagian Ilmu Urai, Tenunan dan Lembaga,
Fakultet Kedokteran Hewan, Balai Perguruan Tinggi R.I.S., Taman
Kentjana 1, BOGOR, Indonesia,
a. The embryonic bloodcirculation in whales (ductus Botalli, ductus Arantii,
etc.). (Mammals)
SLOTWlNSKI, J. Dr, Prof. — Inst. d'Histol. norm, et d'Embryol. de l'Univ.
Poznan, ul. Swiecickiego 6, POZNAN, Pologne.
a. Cytologie du developpement de la membrane olfactive. (Mammiferes)
SMIT, A. L. M.Sc. — Zool. Inst., Univ. of Stellenbosch, STELLEN-
BOSCH, South Africa.

a. Ontogenesis of the vertebral column. Xenopus laevis (Anura, Amphibia)

b. Ontogenesis of skeleton and muscles of the trunk region of Xenopus
laevis. (Anura, Amphibia) (in collaboration with P. A. J. RYKE)
(Normal Table)

SMIT, Miss J. E. H. — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT, Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in colla-
boration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER, Miss W. H. T. van HEESCH, J. C. N. KOK,
J. W. KUIPER, Miss R. P. van LOO, E. D. NIJENHUIS and
W. L. van UTRECHT)

SMITH, Miss F. W. Ph.D. — Univ. of Tennessee, Fac. of Biol. Sci.,
Med. Div., MEMPHIS 3, Tenn., U.S.A.

a. Determination of time of ovulation. Homo (Mammalia)

b. Influence of hormones upon the growth and differentiation of the
stomach in mice. (Rodents, Mammals)

SMRECZYNSKI, S. Ph.D. — Zool. Dept of the Jagellonian Univ., KRA-
KOW (Cracow), St. Anne 6, Poland,
a. Determination of early developmental stages in Insecta. Agelastica alni
(Coleoptera)

SNELLEN, H. A. Dr Med. — Anat.-Embryol. Lab. of the Univ. of Leyden,
Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, Hol-
land,
a. Investigations on congenital heartmalformations; X-ray and anatomical
dissection; collateral circulations. Homo (Mammalia) (in collaboration
with J. DANKMEIJER and Miss R. M. COLLISTER)

Sno 83 Starck

SNOOK, T. Ph.D. — Dept of Anat., School of Med., Univ. of Pittsburgh,
PITTSBURGH 13, Pa, U.S.A.
a. Studies on the development of the spleen. Homo sapiens (Mammalia)
SNYDER, F. F. M.D., A.M., Prof. — Dept of Obstretics and Anat.,
Harvard Med. School, 25, Shattuck Str., BOSTON 15, Mass., U.S.A.
a. Respiratory physiology of fetus and newborn. Rabbit and Man (Mam-
mals)
SOBELS, F. H. M.Sc. — Zool. Lab., State Univ. Utrecht, Janskerkhof 3,
UTRECHT, Holland.

a. Genetics and developmental physiology of a mutant character in Droso-
phila mel., which inhibits the harmonious dorsomedian union of the
imaginal primordia for the tergites, mesothorax and eyes. (Insecta)

b. Developmental physiology and genetics of the lethal mutant character
(lethal-translucida) in Drosophila mel, Meig. (Insecta)

c. Developmental genetics of the lethal combination of two dominant mutant
genes Dichaete and eyeless-dominant in Drosophila mel. Meig. (Insecta)

SODERWALL, A. L. Ph.D., Prof. — Biol. Dept, Univ. of Oregon,

EUGENE, Ore., U.S.A. (no data received over this year)

SOLEWSKI, W. Dr — Zaklad Anat. Porownawczej U.J. im. H. Hoyera,

KRAKOW, sw. Anny 6, Poland,
a. Respiratory vessels in embryos of Rhodeus amavus L. (Teleostei)
SPIRITO, A. Dott., Prof. — 1st. di Biol, gen., Fac. di Med., S. Pietro,

PERUGIA, Italia,
a. Origine e natura dei tumori. Bufo (Anfibi)
SPOFFORD, W. R. Ph.D. — School of Med., State Univ. of New York,

SYRACUSE 10, N.Y., U.S.A.

a. Determination in neural plate (neurological patterns). Ambly stoma
maculatum (Amphibia)

b. Posterior neural plate mesoderm. Regional induction. Amblystoma

c. Induction of parts of the neural plate. Amblystoma mac. (Amphibia)

d. Experimental neurogenesis. Amblystoma mac. (Amphibia)
SPRATT, Jr, N. T. A.B., Ph.D., Prof. — Dept of Zool.. Univ. of Minnesota,

Coll. of Sci., Lit. and Arts, MINNEAPOLIS 14, Minn., U.S.A.
a. Investigating the nutrient requirements essential to morphogenesis and
growth in the early stages of chick development (pre-streak and streak
blastoderms). (Aves)
SPRONK, N. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland.

a. Influence of beryllium salts. Limnaea stagnalis (Gastropoda)

b. Developmental phvsiology of mutants. Drosophila melanogaster (Insecta)
(in collaboration with Miss E. C. BOTERENBROOD, L. E. NIJEN-
HUIS and F. J. OPPENOORTH)

STALFOORT, Miss T. G. J. — Zool. Lab. der Rijks Univ., Janskerkhof 3,
UTRECHT, Holland,
a. Influence of citrate and oxalate on egg membrane. Limnaea stagnalis
(Gastropoda)
STARCK, D. Dr med., o.Prof. — Dr Senckenberg. Anat. Inst., Med. Fak.
der Univ. Frankfurt/Main, Ludwig Rehnstr. 14, FRANKFURT/Main
Sud, Deutschland.
a. Chondrocranium and osteocranium of Microchiroptera, Scotophilus tem-
mincki and Myotis myotis. (Mammalia) (comparative Embryology)

Starck 84 Steph

b. Chondrocranium and osteocranium of birds especially orbitotemporal
region of skull. Struthio, Sula, Diomedea and Spheniscus (Aves) (com-
parative Embryology)

STARK, O. Dr — Heiligenberg-Inst. (Abtlg. Mangold), (17b) HEILIGEN-
BERG, Kreis Oberlingen/Bodensee, Deutschland (Franzosische Zone),
a. Entstehung und Determination der Geschlechtszellen und Gonaden bei
Urodelen (gemeinsam mit O. MANGOLD). Triton (Amphibien)

STEIGER, H. — Zool. Anstalt der Univ., Rheinsprung 9, BASEL, Schweiz.
(no data received over this year)

STEINER, H. Ph.D., Prof. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ.
Zurich, Kiinstlergasse 16, ZURICH 6, Schweiz.

a. Development of the tetrapodAimb with special reference to Mammals,
(embryological evidence of their arboreal origin). (Amphibia, Reptilia,
Aves and Mammalia)

b. New embryological evidence of the "biogenetic law" in connection with
the phenomenon of iteration and convergence, rudimentation and adap-
tation. (Vertebrates)

c. Embryological analysis of feather-growth. The problems of the "after-
schaft" and of "diastataxy". (Ratites and Carinatae) (Aves)

d. Colour and pigment-differentiation in the bird's feather. Melopsittacus
undulatus

STEINERT, M. Lic.Sc. — Lab. de Morphol. anim., Univ. libre de Bruxelles,
1850, Chaussee de Wavre, BRUXELLES- Auderghem, Belgium.

a. Studies on nucleic acids synthesis during morphogenesis. (Various
species of Amphibia) (in collaboration with R. THOMAS)

b. Action of specific nucleic acids on morphogenesis. (Various species of
Amphibia) (in collaboration with R. THOMAS)

STEFANELLI, A. Dr, Prof. — 1st. di Zool., Univ. di Stato, Viale S. Bar-
tolomeo 1, CAGLIARI, Sardegna, Italia.

a. Determination, differentiation and involution of nervous cells. (Reptiles,
Fishes and Amphibians)

b. Metamorphosis of nervous system in Amphibians.

c. Regeneration of nervous tissue. (Reptiles and Amphibians)

d. Embryo metabolism, respiration. (Fishes and Amphibians)

e. Nucleic acid synthesis in development. (Fishes)

STELT, A. v. d. — Zool. Lab., Univ. of Amsterdam, 44 Plantage Doklaan,

AMSTERDAM, Holland,
a. Investigation of the development of the artery-arches in turtle embryos.

(Reptilia)
STEPHAN, Fr. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.

d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol.

generale, 12, Rue de l'Universite, STRASBOURG, France.

a. Formation du systeme vasculaire extraembryonnaire et son extension.
Developpement du coeur et des gros troncs arteriels de l'embryon. Gallus
domesticus (Aves)

b. Etude experimentale des anomalies et des suppleances vasculaires dans
l'aire extraembryonnaire et l'embryon. Gallus domesticus (Aves)

STEPHENSON, N. G. M.Sc. — Auckland Univ. Coll., New Zealand,
Australia,
(no data received over this year)

Stev 85 Struch

STEVENS, L. C. Grad. stud. — Dept of Biol., Coll. of Arts and Sci., Univ.

of Rochester, ROCHESTER 3, N.Y., U.S.A.
a. Developmental potencies of the neural crest in Anurae. Xenopus laevis.

Ran a pipiens
STEYN. W. J. M.Sc. — Hubrecht Lab., Internat. Embryol. Inst., 2, Jans-

kerkhof, UTRECHT, Holland.

a. Development of the gonadal system of Xenopus laevis, Daudin and
Discoglossus pictus. (Amphibia)

b. Vital staining experiments on the early development of Xenopus laevis,
Daudin and Discoglossus pictus. (Amphibia)

c. Investigations on the origin and destination of the germ cells, and the
derivation and development of the gonads by means of xenoplastic trans-
plantations between Xenopus laevis, Daudin and Discoglossus pictus.
(Amphibia)

d. Development of nephroic and gonadal system of Xenopus laevis. (Am-
phibia) (Normal Table)

STICH, H. Dr — Max Planck Institut, WILHELMSHAVEN, Deutsch-

land.

(no data received over this year)
STIEVE, H. Dr. Prof. — Anat. Lab., Luisenstr. 56, BERLIN N.W. 7,

Deutschland.

(no data received)
STOCH, Miss Z. B.Sc. Hons — Dept of Zool., Univ. of the Witwatersrand,

Milner Park, JOHANNESBURG, South Africa,
a. Spermatogenesis in Elephantulus myurus jamesoni. (Mammalia)
STOCKARD, A. H. Ph.D. — Dept of Zool., Univ. of Michigan, ANN

ARBOR, Mich., U.S.A.
a. The early development of Amia calva. (Pisces)
STOLL, R. C. Dr en Med., Dr es Sc. — Inst. d'Embryol. et de Morphol.

exper., Fac. de Med., 1, Place de l'Hopital, STRASBOURG, (Bas-

Rhin), France.

a. Teratology. Rana fusca (Amphibia) and Gallus (Aves)

b. Development of the mullerian duct. Chick (Aves)

STONE, L. S. Ph.D., Prof. — Osborn Zool. Lab. and Anat. Lab., Yale
Univ. School of Med., NEW HAVEN 11, Conn., U.S.A.
a. Complete analysis of the ocular mechanisms in Amblystoma and Triturus
studying the regeneration of the lens and retina and regulation of the
nervous mechanism after ocular transposition. (Amphibia)

STRAUSS, F. Dr Med. — Anat. Inst., Biihlstr. 26, BERN, Schweiz.

a. Early development and implantation of mammals. Hominidae (Insecti-
vora)

b. Place of fertilization of the mammalian egg. (Rodentia and Carnivora)
(in collaboration with H. W. MOSSMANN, Dept of Anat., Univ. of
Wisconsin, MADISON, Wis., U.S.A.)

STRAWlNSKI, S. — Zaklad Anat. Porownawczej i Embriol. Uniw. M.
Kopernika, Sienkiewicza 30, TORUN, Poland,
a. Development of the blood vessels in the frog. Rana esculenta (Salientia)
STRUCHLY, Z. Dr — Inst. Zool. Uniw. we Wroclawiu, Zaktad Zool.
Ogolnej, ul. Sienkiewicza 21, WROCLAW, Polska (Poland),
a. Influence of the blockade of the reticuloendothelial system on the meta-
morphosis of Amphibians.

Strud 86 Thomas

STRUDEL, G. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.
d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol,
generale, 12, Rue de l'Universite, STRASBOURG, France.

a. Les correlations nerveuses chez l'embryon de Poulet. Gallus domesticus

b. Role des hormones dans la differentiation du sexe par les methodes
d'injectiens d'hormones. Gallus domesticus (Aves) (en collaboration
avec Et. WOLFF et Mme Em. WOLFF)

STULTZ, W. A. B.A., Ph.D., Prof. — Univ. of Vermont, Coll. of Med.,

BURLINGTON, Vt, U.S.A.

(no data received over this year)
SUGIYAMA, M. Dr Sci. — The Sugashima Marine Biol. Stat., Nagoya

Univ., Sugashima-mura, Shima-gun, Mie-ken, Japan,
a. Physiological studies on the fertilization and artificial parthenogenesis

of the sea urchin eggs. Strongylocentrotus pulcherrimus (Echinoidea)

(in collaboration with M. ISHIKAWA)
SUOMALAINEN, H. Mag.phil. — Zool. Lab., Univ. of Helsinki. Dept

of Physiol., P. Rautatiekatu 13, HELSINKI, Finland,
a. Thyroid gland in delayed metamorphosis of Xenopus larvae. (Amphibia)

(in collaboration with S. TOIVONEN)
SWEDMARK, B. G. Fil.mag. — Inst, for Zoophysiol., Fac. of Mat.-Nat.

Sci.. Villavagen 9. UPPSALA, Sweden,
a. Sulphate metabolism in sea urchin development. ( Echinodermata)
SZARSKI, K. W. Ph.D. — Zaktad Anat. Porownawczej, Inst. Zool. Uniw.,

ul. Sienkiewicza 21, WROCLAW, Poland,
a. Development of the kidneys in Anamnia. (Anuva, Amphibia and

Teleostei)
TAKATA, K. M.A. (Rigakushi) — Biol. Inst., Fac. Sci., Nagoya Univ.,

Chigusa-Ku, NAGOYA, Japan.

a. Histochemical study of early developmental stages. Rhacophorus
schlegelii, Triturus pyrrhogaster (Amphibia)

b. Regional distribution of ribonucleic acid in early developmental stages,
studied quantitatively. Triturus pyrrhogaster (Amphibia) (in collabo-
ration with T. YAM ADA)

TARDENT, P. — Abt. fur Zoophysiol., Zool. Inst, der Univ., Sahlistr. 8,

BERN, Schweiz.
a. Regeneration bei Coelenteraten, Hydrozoa. (Bedeutung der I-Zellen)

(in Zusammenarbeit mit F. E. LEHMANN)
TEYSSEYRE, Mile J. — Lab. d'Embryol., Fac. de Med., 15, Rue Ecole

de Med., PARIS Vie, France,
a. Developpement de lencephale et particulierement du diencephale. Rat

(Mammiferes)
THEILER, K. Dr Med. — Anat. Inst, der Univ. Zurich, Gloriastr. 19,

ZURICH, Schweiz.

a. Uber die Entstehung von Blockwirbeln beim Menschen. (Mammalia)

b. Uber die Entwicklung von Missbildungen der Wirbelsaule. Mensch und
Triton. (Vertebrata)

THERMES, G. Dr — 1st. di Zool., Univ. di Stato, Viale S. Bartolomeo 1,
CAGLIARI, Sardegna, Italia,
a. Regeneration of the spinal cord. (Amphibians and Reptiles)
THOMAS, R. Lic.Sc. — Lab. de Morphol. anim., Univ. libre de Bruxelles,
1850, Chaussee de Wavre, BRUXELLES-Auderghem, Belgique.

Thomas 87 Tracy

a. Studies on nucleic acids synthesis during morphogenesis. (Various
species of Amphibia) (in collaboration with M. STE1NERT)

b. Action of specific nucleic acids on morphogenesis. (Various species of
Amphibia) (in collaboration with M. STEINERT)

THOMASON. Miss D. B.A. — Lab. de Morphol. anim., Univ. libre de
Bruxelles, 1850, Chaussee de Wavre, BRUXELLES-Auderghem,
Belgique. Amphibia)

a. Implantation of nuclei in Amphibian gastrulae. (Various species of

b. Studies on cholesterinase synthesis during embryonic development.
Amblystoma mexicanum (Amphibia)

THOMSON FLYNN, T. Dr. Prof. — Fac. of Sci., Queens Univ., BEL-
FAST, Ulster, Eire.

TOIVONEN, S. Dr phil. — Zool. Lab., Univ. of Helsinki, Dept of Physiol..
P. Rautatiekatu 13. HELSINKI, Finland.

a. The specific action of heterogenous inductors. Triton (Amphibia)

b. Analysis of the regulative potencies of the invaginating archenteron-roof
and of the induced neural plate along the dorsoventral and cranio-caudal
axes by heteroplastic transplantation of parts of the dorsal blastoporal
lip. Triturus alpestris, taeniatus and cristatus. (Amphibia) (in colla-
boration with P. D. NIEUWKOOP)

c. Thyroid gland in delayed metamorphosis of Xenopus larvae (Amphibia)

(in collaboration with H. SUOMALAINEN)

d. The development of mouth- and pharyngeal cavity of Xenopus laevis
during metamorphosis. (Anura, Amphibia) (Normal Table)

ToNDURY, G. Prof. — Anat. Inst., Univ. Zurich, Gloriastr. 19, ZORICH,
Schweiz.

a. Systematische Untersuchungen typischer menschlicher Missbildungen
unter Bezugnahme auf die Ergebnisse entwicklungsphysiologischer
Forschung. Gegenwartig werden Kopfmissbildungen und sireniforme
Missbildungen analysiert. (Mammalia)

b. Untersuchungen tiber die Entwicklung des menschlichen Gesichts und
ihre Beziehungen zur Entstehung der Hasenscharte und anderer Spalt-
bildungen. (Mammalia)

c. Untersuchungen zur Frage der Gonadenentwicklung beim Menschen
und der Potenzen des Ovarepithels beim Erwachsenen. (Mammalia)

d. Embryologische Untersuchungen zur Frage der Embryopathia rubeolosa.
(Mammalia)

e. Untersuchungen zum Wirkungsmechanismus der Sexualhormone auf
Wachstum und Differenzierung. (Amphibia)

f. Experimented Untersuchungen zum Induktionsproblem. (Amphibia)

g. Experimented Untersuchungen zur Wirkung der Chorda dorsalis beim
Hiihnchen. (Aves) » X t^

TOSI, Miss L. Dr — 1st. di Zool. e Anat. comp., Via Celoria 10, MILANO,
Italia,
a. Proteins in embryonic development. (Amphibia and Echinodermata)
TOWNES, Ph. L. Grad.stud. — Dept of Biol., Coll. of Arts and Sci.,
Univ. of Rochester. ROCHESTER 3, N.Y., U.S.A.
a. Selective cellular adhesion in embryonic germ layers. (Urodeles and
Anurans)
TRACY H. C. Ph.D., Prof. — Dept of Anat., Univ. of Kansas. Med.
School. LAWRENCE, Kan., U.S.A.

Tracy 88 Tsa

a. The development of all systems of the toadfish in relationship to behavior.
Opsanus tau (Pisces) (in collaboration with J. WINBLAD and Th.
BATTY)

b. Development of the nervous system of the toadfish in relation to its
behavior. Opsanus tau (Pisces)

c. Physiological stages in the development of the toadfish. Opsanus tau
TRAMPUSCH, H. A. L. Dr Phil. — Anat.-Embryol. Lab., Univ. van

Amsterdam, Mauritskade 61, AMSTERDAM O., Holland.

a. Experiments on the head-organizer by means of X-rays and a new
micro-surgical device. (Amphibians)

b. Experiments on secondary inductors, mainly on sense-organs. (Am-
phibians)

c. Experiments testing similarity in the processes which take place during
embryological development and regeneration. (Coelenterata, Vermes,
Echinodermata, etc.) Anuta)

d. Experiments on the effect of X-rays on regeneration. (Urodela and

e. Experiments searching for the origin and the way of developing of
regeneration-blastema. (Urodela and Anura)

TRIBE, Miss M. D.Sc. — King's Coll., Strand, LONDON W.C. 2, Eng-
land.

a. Development of the trabeculae and parachordals in the Lamprey.
(Cyclostomes) (in collaboration with A. FISK)

b. A critical note on the development of the Vertebrate kidney, (in col-
laboration with A. FISK)

TRINKAUS, J. P. M.A., Ph.D. — Osborn Zool. Lab., Yale Univ., NEW
HAVEN 11, Conn., U.S.A.

a. Mechanism of gastrulation in teleost eggs. The nature of the surface
gel layer of the egg and its possible role in the cell, movements
(particularly epiboly) characteristic of teleost gastrulation. Extensive
utilization of the methods of marking, wounding, transplantation. Fun-
dulus heteroclitus (Osteichthyes)

b. Role of hormones in differentiation of pigment patterns. Investigation
of estrogen and thyroid hormone as morphogenetic agents in pigment
pattern differentiation. The particular emphasis has been on the response
of melanoblasts to these hormones and the role of epidermis in con-
ditioning this response. Gallus domesticus (Aves)

c. Investigation of the nutritional role of yolk and its constituents in early
morphogenesis, by the method of explantation in vitro of yolk-
free blastoderms at blastula and gastrula stages. Fundulus heteroclitus
(Osteichthyes)

TRUSLOVE, Miss G. M. B.Sc. — Dept of Genetics, Univ. Coll. London,
Gower St, LONDON W.C. 1, England,
a. Developmental genetics of skeletal mutants. Mus musculus (Mammalia)
TSAI, Miss N. B.Sc. — Dept of Biol., Nat. Univ. of Chekiang, HANG-
CHOW, China,
a. Studies on eye-stalk hormone in Crustacea:

1. Isolation and purification of the hormone preparation.

2. Chemical identification of the active principle.

3. Mechanism of the hormonal action.

Caridina denticulata (Decapoda) (in collaboration with H. M. KIANG,
J. CHU and P. S. CHOW)

Tsch 89 Ty

TSCHUMI, P. — Abt. fur Zoophysiol., Zool. Inst, der Univ., Sahlistr. 8,
BERN, Schweiz.
a. Chemische Beeinflussung der Extremitatenbildung von Xenopus. (Am-
phibia)

TSENG, Miss M.P. B.S. — Dept of Zool., Coll. of Sci., Nat. Univ. of
Peking, Ching Shan Tung Chieh, PEIPING, China.

a. Localization of the factors which cause situs inversus in tadpoles by
defect and inversion experiments. (Removal and inversion of different
parts of neural plate and chorda-mesoderm, or lateral plate). Rana
nigromaculata (Amphibia)

b. Intestinal canal can only be formed in the whole embryo; in the extirpated
entoderm no canal formation ever occurs. By combination of entoderm
fragments with different parts of mesoderm in explants the formation
of the intestinal canal may be studied. Rana nigromaculata (Amphibia)

c. Determination of: how entoderm regulates its lost parts; when entoderm
loses its power of regulation; and whether the regulation power is lost
gradually or suddenly at a certain stage. Moreover the question: whether
the entoderm at the neural plate stage still retains its power of regulation
when different portions of entoderm are removed. Afterwards earlier
stages will be examined in similar way. Rana nigromaculata (Amphibia)

TUFT P. H. M.A., Ph.D. — Dept of Zool., Univ. of Edinburgh, West
Mains Rd, EDINBURGH 9, Scotland,
a. Respiratory metabolism of developing Insect eggs. Rhodnius prolixus,
Locustana pardalina and Calliphora

TUNG, T. C. Dr, Prof. — Dept of Zool., Univ. of Shantung, TSINGTAO,
China. (no data received)

TWEEDELL, K. S. — Dept of Zool., Univ. of Illinois, URBANA, 111.,
U.S.A.
a. Varying growth periods of the Lucke' carcinoma in different species
of Rana. (Amphibia)

TWITTY, V. C. Dr, Prof. — Dept of Biol. Sci., Stanford Univ., STAN-
FORD, Cal.. U.S.A.

a. The differentiation of macrophages into melanophores following their
ingestion of pigmentary debris released by degeneration of preexisting
melanophores. (Amphibians) (in collaboration with M. C. NIU)

b. The origin of chromatophores of the salamander tail. (Amphibians)
(in collaboration with M. C. NIU)

c. Factors influencing pigment differentiation in amphibian melanoblasts.
(in collaboration with M. C. NIU)

d. The transformation of differentiated xanthophores into typical melano-
phores. (Amphibians) (in collaboration with M. C. NIU)

e. The differentiation of single isolated gastrula ectoderm cells cultured
under special conditions in vitro. (Amphibians) (in collaboration with
M. C. NIU)

f. The migratory behaviour of single neural crest melanoblasts isolated in
capillary tubes of extremely small bore. (Amphibians) (in collaboration
with M. C. NIU)

TYLER, A. Ph.D., Prof. — Dept of Embryol., Div. of Biol., California Inst,
of Technol., PASADENA 4, Cal., U.S.A.

a. Physiology of fertilization, (various species of Echinoids)

b. Physiology of early development, (various species of Echinoids and
various species of Polychaets)

Ub 90 Vak

UBISCH, L. v. Dr jur. et phil., Prof. (Emer.) — PARADIS, Norge.

a. Entwicklungsprobleme (Buch, c. 250 S.) (Evertebraten und Vertebraten)

b. Entwicklungsphysiologie (Buch, c. 100 S.) (Evertebraten und Verre-
braten)

c. Entwicklungsgeschichte der Seeigel (Monogr. 100 S.) (Echinodermata)

d. Biologische Synthesen (Im Druck) (Evertebraten und Vertebraten)

e. Over abnorm fargete og inverse flatfisk. Pleuronectes platessa, flesus
and pi. 9 X fl. $ (Pisces)

f. Undersokelser over Pleuronectider. I. Den embryonale utvikling av
Pleuronectes platessa, PL flesus og de resiproke bastarder mellom begge
arter. Pleuronectes pi. 9 X fl. $ og Pleuronectes fl. 9 X pi. $ (Pisces)
Kjernestorrelses-berekninger og vekstforholdene.

ULRICH, H. Dr Phil. — Zool. Inst, der Univ. Gottingen, Mathem.-Naturw.
Fak., Nikolausbergerweg 75, GOTTINGEN, Deutschland.

a. Strahlenwirkung in der Embryologie von Drosophila melanog aster.
(Arthropoda)

b. Padogenetisch-bisexueller Cyclus von Oligarces paradoxus. (Cecido-
myidae, Diptera, Arthropoda)

URBANI, E. Dott. — 1st. di Anat. comp. dell'Univ. di Roma, Fac. di Sci.,
Via Borelli 50, ROMA, Italia.

a. Ricerche sulla respirazione embrionale dei Teleostei.

b. Azione degli antimitotici sul metabolismo respiratorio degli Anfibi.

c. Ricerche sulla determinazioni embrionali precoci nella Ascidie.

d. Ricerche sui determinanti germinali. (Insecta)

e. Ricerche sull'acido ribonucleico delle fasce vitellogene e dei nuclei
vitellini. (Echinodermata, Arachnoidea, Myriapoda and Mammalia)

f. Ricerche sulla costituzione delle formazioni ergastoplasmatiche.
URBANLMISTRUZZI, Mrs L. Dott. — 1st. di Anat. comp. dell'Univ.

di Roma, Fac. di Sci., Via Borelli 50, ROMA, Italia.

a. Ricerche su parabiosi tra anfibi, anuri e urodeli alio scopo di indagare
i processi di regolazione, differenziazione nel quadro dei problemi della
costituzione biologica. (in collaboration with G. COTRONEI and
T. PERRI)

b. Azione dei raggi X sugli embrioni di Anfibi, studiata con il metodo
della parabiosi.

c. Ricerche sull'acido ascorbico durante lo sviluppo embrionale degli Anfibi.
UTRECHT, W. L. van — Zool. Lab. der Rijks Univ. Utrecht, Janskerkhof 3,

UTRECHT, Holland,
a. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in col-
laboration with J. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S.
DUYKER— de BEER, Miss W. H. T. van HEESCH, J. C. N. KOK,
J. W. KUIPER, Miss R. P. van LOO, E. D. NIJENHUIS and Miss
}. E. H. SMIT)
VACHON, M. Dr — Lab. de Zool., Museum Nat. de Paris, 61, Rue de
Buffon, PARIS Ve, France,
a. Embryologie et developpement postembryonnaire. (Arachnides et
Myriapodes)
VAKAET, L. C. Cand. Med. — Lab. of Anat., Fac. of Med., Univ. of
Gent, Bylokekaai 1, GENT, Belgium,
a. Descriptive and cytochemical embryology. Lebistes reticulatus (Teleostei)

Vand 91 Vann

VANDEBROEK, G. Dr Sc, Prof. — Lab. d'Embryol.. Inst, de Zool., Univ.
de Louvain, 71, Rue de Namur, LOUVAIN, Belgique.

a. Morphogenetic movements during the gastrulation of Ascidia aspersa
and Styela partita. (Ascidians)

b. The mechanics of gastrulation in Ascidia aspersa and Styela partita.
(Ascidians)

c. Protoplasmic movements after fertilization of Ascidia aspersa. (Ascidians)

d. The organization of Ascidian embryos studied by the influence of cen-
trifugation; a. action on isolated parts; b. local action of centrifugation.
(recombination after centrifugation)

e. Induction and competence phenomena during the development of
Ascidia aspersa. (Ascidians)

f. Action of LiCl and NaSCN on the development of Ascidia aspersa and
Styela partita. (Ascidians)

g. Development of the neural system of Balanoglossus kowalewskii. (En-
tetopneusta) (in collaboration with J. JANSSENS)

h. Morphogenetic movements during gastrulation of Coelenterata, Enterop-

neusta and lower Chordates.
i. The general comparative, descriptive and experimental embryology of

the Merazoa and their classification. The place of the Cycloneuria (Echi-

nodermata. Enter opneusta, Pterobranchia and Chaetognatha) in the

animal Kingdom,
j. The development of the trabeculae cranii in perch embryos from which

the prosencephalon has been removed. Perca (Osteichthyes)
k. The development of the trabeculae cranii in perch embryos treated with

LiCl. Perca (Osteichthyes) (in collaboration with M. T. CLAES)
1. Modifications of the competence in Triturus taeniatus after local action

of LiCl. (Utodeles) (in collaboration with E. BONE)
m. Study of the factors of morphogenesis in the embryo of Saccoglossus

kowalewskii. The potencies of ectoblast isolated at the beginning of

gastrulation. (Enteropneusta)
n. The distribution of nucleic acids during the development of Eisenia

foetida (Annelida), Saccoglossus kowalewskii (Enteropneusta) and

Ascidia aspersa (Tunicata). (in collaboration with coworkers)
VANNINI, E. Dr, Lib. doc. — 1st. di Zool. e Anat. comp., Fac. di Sci.,

Via Loredan 6, PADOVA, Italia. __

a. Cycle of the nucleic acids during ovogenesis. (Fishes and Amphibia)

b. Development and differentiation of the gonads, with special reference
to embryological relations between the medullary tissue of the gonads
and the cortico-adrenal blastema. (Amphibia, Birds and Mammals)

c. Experimental actions of the steroid hormones (testosterone, oestradiol,
progesterone, desoxycorticosterone on the sexual differentiation, with
analysis of their stimulative or inhibiting effects on the development of
the cortical or medullary tissues of the gonads. (Amphibia and Birds)

d. Experimental regeneration and asexual multiplication (schizogenesis) in
a hermaphrodite Polychaete, Salmacina incrustans (Clap.), with special
reference to the origin and the sexualisation of the germ-cells.

e. Experimental analysis of the causal development of the gonad in Uro-
deles. Triturus alpestris and taeniatus (Started at the Hubrecht Labora-
tory, Utrecht, Holland)

Vas 92 Waechter

VASSEUR, E. J. E. Ph. lie. — Wenner-Grens Inst, for exper. Biol., Norr-
tullsgatan 16, STOCKHOLM 23, Sweden,
a. Studies on the chemical composition and the species specificity of its
chemical composition. Action of dissolved jelly coat substance (fertilizin)
on the spermatozoa. Paracentrotus lividus, Psammechinus miliaris and
other sea urchins. ( Echinodermata)
VEEN, H. G. v. d. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Inhibition of development by distilled water. Limnaea stagnalis (Gastro-
poda)
VERHEYEN, F. J. — Zool. Lab. der Rijks Univ., Janskerkhof 3, UTRECHT,
Holland,
a. Centrifugation of cleavage stages. Limnaea stagnalis (Gastropoda) (in
collaboration with Miss M. T. C. van EGMOND)
VERMAAK, D. B.Sc. — Zool. Inst., Univ. of Stellenbosch, STELLEN-
BOSCH, South Africa,
a. Ontogenesis of commissural connexions of the vena pudenda externa
and v.p. interna in an advanced human embryo. Homo sapiens (Primates,
Mammalia)
VIGLIANI, F. Dr — Inst, of human Anat, Corso Massimo d'Azeglio 52,
TORINO, Italy,
a. Late development and growth of bones, joints and muscles in mechani-
cally inert and denervated limbs. Canis familiaris (Mammalia)
VILLAFRANCA, G. W. de B.S. — Osborn Zool. Lab., Yale Univ., NEW
HAVEN 11, Conn., U.S.A.
a. Studies of various protein fractions in developing muscle in relation to
changes in physical properties and the development of contractility.
Mus norvegicus albinus (Mammalia) (under direction of E. J. BOELL)
VINTEMBERGER, P. Dr Med. — Inst. d'Embryol. et de Morphol. exper.,
Fac. de Med., 1, Place de l'Hopital, STRASBOURG, (Bas-Rhin),
France,
a. Recherches sur le determinisme de la symetrie bilaterale chez les Ver-
tebtes. (Amphibiens)
VITAGLIANO, G. Dr Sc. — 1st. di Genet. dell'Univ. di Napoli, Fac. di Sci.,
Via Mezzocannone 8, NAPOLI, Italia,
a. Ribonucleic acid supply to germ cells and determinism of meiosis.
Asellus (Crust., Isop.)
WADDINGTON, C. H. F.R.S., M.A., Sc.D., Prof. — Inst, of Anim.
Genet., West Mains Rd, King's Buildings, EDINBURGH 9, U.K.

a. Regional specificity in living and dead organizers. Triton alpestris

b. Cinematographic study of morphogenetic movements. (Amphibians and
Birds)

c. Transplantation of cell constituents. Triton alpestris (Amphibia)

d. Developmental effects of some genes in Drosophila melanogaster. (In-
secta)

e. Study of abnormal embryos induced by injecting trypan blue into preg-
nant mice. Mus musculus (Mammalia) (in collaboration with T. C.
CARTER)

WAECHTER, Miss H. Dr rer. nat. — Heiligenberg-Inst. (Abtlg. Mangold),
(17b) HEILIGENBERG, Kreis Oberlingen/Bodensee, Deutschland
(Franzosische Zone).

Waechter 93 Web

a. Determinationsvorgange in der Gastrula und Neurula von Triton. (Am-
phibien) (gemeinsam mit O. MANGOLD)

b. Verhalten embryonaler Zellen im erwachsenen Wirt. Triton (Am-
phibien)

WALANDER, A. Med. lie. — Tornblad-Inst. of comp. Embryol., Anat.
Dept of the Univ. of Lund, LUND, Sweden,
a. Prenatal development of the epithelial primordium of the larynx. Rat
(Mammals)
WALKER, P. M. B. B.A. — M.R.C. Biophysics Res. Unit, King's Coll.,
Strand. LONDON W.C. 2, England,
a. Cytochemistry of cells growing in tissue culture, (including observations
with an ultra-violet microscope). (Aves and Mammalia) (in collaboration
with H. G. DAVIES)
WALLACE, D. R. J. B.Sc. — Dept of Zool.. Univ. of Edinburgh, West
Mains Rd, EDINBURGH 9, Scotland,
a. Growth and differentiation of acarine hypopi. (Arachnida)
WALLMANN, Miss S. B.S. — Dept of Zool., Univ. of Chicago, CHI-
CAGO 37, 111., U.S.A.
a. Development and growth of amphibian lung, (under direction of P. A.
WEISS)
WANG Y. T. B.S. — Dept of Zool., Coll. of Sci., Nat. Univ. of Peking,
Ching Shan Tung Chieh, PEIPING, China.

a. Mit Hilfe der Exstirpation des Entoderms in Neurula-stadium und der
Defektsetzung in der Seitenplatte einer Spatgastrula und Friihneurula
soil die Entstehung der Geschlechtszellen studiert werden. Rana nigro-
maculata (Amphibia)

b. Der Zeitpunkt der Determination und der Auswanderung der Ge-
schlechtszellen werden mit der Wiederholung der oben genannten Ver-
suchen in verschiedenen Entwicklungsstadien zum feststellen versucht.
Rana nigromaculata (Amphibia)

WASHINGTON, Miss D. M.S. — Dept of Zool., Univ. of Chicago,

CHICAGO 37, 111., U.S.A.
a. Factors responsible for degeneration of the mesonephros in birds. Gallus

domesticus (under direction of P. A. WEISS)
WATTERSON, R. L. Ph.D. — Cresap Biol. Lab., Northwestern Univ.,

EVANSTON, 111., U.S.A.

a. The paired primordia of the avian glycogen body as revealed by glycogen-
specific stains. Gallus domesticus (Aves)

b. The production of twin glycogen bodies by mechanically preventing
fusion of the paired primordia. Gallus domesticus (Aves)

c. Effects of extirpation of the glycogen body in posthatching stages.
Gallus domesticus (Aves)

d. Quantitative analysis of the glycogen content of the glycogen body of
the chick from hatching to adult stages. Gallus domesticus (Aves)

e. Factors which initiate development of — and control the size of the
chick glycogen body. Gallus domesticus (Aves)

f. Effects of insulin injections upon development of the glycogen body.
Gallus domesticus (Aves)

WEBER, A. Prof. (Emer.) — Lab. de Neurohistol., Inst. d'Anat., ficole
de Med., 20, Rue ficole de Med., GENfiVE, Suisse,
(no data received over this year)

Weg 94 Wenger

WEGLARSKA, Miss B. — Zool. Dept of the Jagellonian Univ., KRAKOW
(Cracow), St. Anne 6, Poland,
a. Early developmental stages of Insects. Agelastica alni (Coleoptera)
WEISS, P. A. Ph.D., M.D., Prof. — Dept of Zool., Univ. of Chicago,
CHICAGO 37, 111., U.S.A.

a. Fate of embryonic cells after dissociation and reinjection into embryos.
Gallus domesticus (Aves) (in collaboration with G. ANDRES)

b. Mitogenic stimulation of epidermis by fragments of nervous system.
(Urodela) (in collaboration with Miss J. OVERTON)

c. Cytological and electronmicroscopic studies on lens induction. Gallus
(Aves) (in collaboration with M. McKEEHAN and R. PETZOLD)

d. Embryonic effects or organ-specific antibodies combined with radioactive
tracers. Gallus domesticus (Aves) (in collaboration with R. PETZOLD)

e. Fate of tissue culture cells introduced into embryos after prolonged
cultivation in vitro. Gallus domesticus (Aves) (in collaboration with
Miss I. FISCHER)

f. Quantitative determination of cell shape in tissue culture. Gallus do-
mesticus (Aves) (in collaboration with Mrs B. GARBER)

g. Role of various tissue components in Urodele limb regeneration. Triturus
(Amphibia) (in collaboration with Miss E. RUSSO)

h. Factors determining size of Mauthner's cell. (Amphibia) (in collaboration

with F. ROSSETTI)
i. Development of intrinsic functional differences among brain parts

tested by larval deplantation. (Amphibia) (in collaboration with Miss

C. BLUMER)
WEISZ. P. B. B.Sc, M.Sc, Ph.D. — Arnold Biol. Lab., Brown Univ.,

PROVIDENCE 12, R.I., U.S.A.

a. Study of morphogenesis in Ciliata. Stentor and Blepharisma

b. Study of self-reproducing organelles. (Ciliata)

WEL, W. H. v. d. Med.Cand. — Anat.-Embyrol. Lab. of the Univ. of
Leyden, Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN,
Holland,
a. Development of the circulatory system in man and various mammals.
Cow, Guinea pig, Rat and Man

WELLS, L. J. Ph.D., Prof. — Inst, of Anat, Univ. of Minnesota, MIN-
NEAPOLIS 14, Minn., U.S.A. (no data received over this year)

WENDT, G. G. Dr Med. — Anat. Inst, der Univ., Robert Koch Str. 6,
MARBURG/Lahn, Deutschland.
a. Ablauf und Bedingungen embryonalen Muskelwachstums. Anderungen
des Gewichts, des Volumens und der Faser-Histochemie wahrend des
Wachstums. Maus (Stamm Strong A.) (Sauget)

WENGER, B. S. B.S., M.S., Ph.D. — Dept of Pharmacol., School of Med.,
Washington Univ., ST LOUIS 10, Mo., U.S.A.

a. Determination of structural patterns in the spinal cord of the chick
embryo studied by transplantations between brachial and adjacent levels.
Gallus domesticus (Aves)

b. Patterns of chemical and enzymatic development in different spinal
cord levels of the embryonic chick studied by ultramicrochemical tech-
niques. Gallus domesticus (Aves)

c. Method for staining embryos in to to with iron hematoxylin.

d. Fabrication of metallic instruments for embryonic operations.

Wenger 95 Williams

WENGER, Mrs E. L. B.A., M.A., Ph.D. — Dept of Zool., Grad. School
of Arts and Sci., Washington Univ., Lindell and Skinker Aves, ST
LOUIS 5, Mo., U.S.A.

a. Analysis of interrelations between parts of the embryonic spinal cord
by means of defect experiments. Gallus domesticus (Aves)

b. Radio-active tracer study of amphibian eggs, with special reference to
organizer action, (in collaboration with F. MOOG)

c. Studies on phosphorous metabolism of amphibian embryos by means
of P 82 . Rana pipiens (in collaboration with F. MOOG)

d. Cytological and cytochemical studies of the developing chick duodenum.
Gallus domesticus (Aves) (in collaboration with F. MOOG)

WESTHUIZEN, C. M. v. d. M.Sc. — Zool. Inst., Univ. of Stellenbosch,
STELLENBOSCH, South Africa,
a. Ontogenesis of the skull. Heleophryne purcelli (Anura, Amphibia)
WESTRA, S. — Anat.-Embryol. Lab., Oostersingel 69, GRONINGEN,
Holland,
a. Embryological development of the roof of the fourth ventricle in Man.
(Mammals)
WETMORE, R. H. Ph.D., D.Sc, Prof. — Biol. Lab's, Harvard Univ.,
Divinity Ave, CAMBRIDGE 38, Mass., U.S.A.

a. Development in vascular plants, supported by studies in tissue culture,
grafting, regeneration and transplantation. On various species of ferns,
horsetails and Selaginella especially.

b. Morphcgenetic factors concerned with early development of eggs and
spores in plants. In certain ferns and Selaginellas.

WHITAKER, D. Dr, Prof. — Stanford Univ., PALO ALTO, Cal., U.S.A.
(no data received)

WHITELEY, A. H. Ph.D., Prof. — Dept of Zool., Univ. of Washington,
SEATTLE 5, Wash., U.S.A.
a. Study of the importance of the phosphorylated compounds in the ener-
getic changes accompanying activation of the eggs of echinoderms.
Strongylocentrotus purpuratus

WICKLUND, Miss E. Ph.lic. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, STOCKHOLM 23, Sweden,
a. On fertilizability of the egg under different conditions acting on sperm
and eggs. Psammechinus miliaris, Strongylocentrotus droebachiensis and
Arbacia lixula ( Echinodermata)

WIERDA, J. L. B.S., M.S., Ph.D., Asst Prof. — Dept of Anat., School
of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A.
a. Relation of diets to growth in length and weight of the gastro-intestinal
tract of the white rat. (Mammals)

WILENS, Miss S. A.B. — Osborn Zool. Lab., Yale Univ., NEW HAVEN
11, Conn., U.S.A.
a. Vital staining of mesoderm and endoderm under the midbrain and hind-
brain and adjacent ventral regions. Amblystoma punctatum (Urodeles)

WILLIAMS, R. G. A.B., M.A., M.D., Prof. — Dept of Anat., School of
Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A.

a. Studies on growth of various implanted tissues with the rabbit's eat
chamber technique. (Mammals) (in collaboration with E. R. CLARK)

b. Development of bone marrow in rabbit's ear tissue chambers. (Mammals)
(in collaboration with R. RHINES)

Williams 96 Wing

WILLIAMS, S. C. B.S., Ph.D., Asst Prof. — Dept of Anat., School of
Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A.

a. Tissue culture of young isolated neuroblasts from special areas of brain,
esp. cerebellum, trigeminal. Chick and Man (Higher Vertebrates)
(in collaboration with Miss M. J. HOGUE)

b. Early development of human teeth. (Mammals)

WILLIAMS, T. W. B.S.. M.S., Ph.D., Prof. — School of Med., West
Virginia Univ., MORGANTOWN, W.Va., U.S.A.
(no data received over this year)

WILLIER, B. H. B.S., Ph.D., D.Sc, Prof. — Dept of Biol., John Hopkins
Univ., Charles and 34th Strs, BALTIMORE 18, Maryland, U.S.A.

a. The mechanism of interaction of melanoblasts of known genotype with
feather papilla in the production of feather pigmentation pattern. Gallus
domesticus (various varieties) (Aves)

b. Factors regulating migration of melanoblasts and their growth (multi-
plication) and differentiation (synthesis of specific melanin granules).
Gallus domesticus (various varieties) (Aves)

c. The role that sex and other hormones play in modifying the phenotypic
expression of melanoblasts in color pattern formation. Gallus domesticus
(various varieties) (Aves)

WILSON, J. W. Ph.D., Prof. — Arnold Biol. Lab., Brown Univ., PROVI-
DENCE 12, R.I., U.S.A.
a. A study of mitotic activity and other cytological phenomena in liver
regeneration. (Vertebrates)

WINBLAD, J. A.B. — Dept of Anat., Univ. of Kansas, Med. School,
LAWRENCE, Kan., U.S.A.

a. Development of all systems of the toadfish in relation to behavior.
Opsanus tau (Pisces) (in collaboration with H. C. TRACY and Th.
BATTY)

b. Pharmacodynamics of the development of the toadfish. Opsanus tau
(Pisces)

WINDLE, W. F. B.S., M.S., Ph.D., Sc.D., Prof. — Dept of Anat, Univ.
of Pennsylvania, School of Med., PHILADELPHIA 4, Pa, U.S.A.

a. Development of fiber tracts in brain of human embryos of 4th to 7th
week. (Mammalia)

b. Development of chromophil substance in central nervous system neurons.
Guinea pig and man (Mammalia) (in collaboration with A. LAVELLE)

c. Regeneration in mammalian central nervous system. (Recovery of neurons
following trauma, alterations in their internal environment). Car and dog
(Mammalia) (in collaboration with J. C. LIU and other coworkers)

d. Changes in pulmonary blood volume at birth and in early postnatal life.
Guinea pig (Mammalia) (in collaboration with T. P. SINHA)

e. Structure of the coronary arteries at birth. Man (Mammalia)

f. Extramedullary hemopoesis in the rabbit and car induced by bacterial
pyrozenic extracts. (Mammalia)

g. Regeneration in the spinal cord of the cat and dog. (Mammalia) (in
collaboration with W. W. CHAMBERS)

WINGSTRAND, K. G. Fil.lic. — Embryol. Dept, Zool. Inst., Univ. of
Lund, LUND, Sweden,
a. Embryology of birds, esp. development of hypophysis and vessels in
connection with them.

Wino 97 Wolff

WINOWSKA, Mrs J. M.Sc. — Zakfad Anat. Porownawczej, Inst. Zool.
Uniw., ul. Sienkiewicza 21, WROCLAW. Poland,
a. Development of the air-bladder in the Teleost, Xiphophorus. (Fishes)

WIRTH, Miss P. B.S. — Dept of Biol. Sci.. Univ. of Pittsburgh, PITTS-
BURGH 13. Pa, U.S.A.

a. The stages and normal development of metamorphosing R. sylvatica
larvae under natural conditions. (Compared to animals grown in
"standard" laboratory environment) (Amphibia, Anuca) (in collaboration
with J. F. GENNARO Jr. and D. B. GOODMAN)

b. The effect of X-irradiation on tail resorption in Anura. (Resorption of
tail irradiated entirely and in isolated areas) R. clamitans (in collabo-
ration with J. F. GENNARO Jr.)

WISKONT, E. H. — Inst, of Histol. and Embryol. Med. Acad., GDANSK,
Poland,
a. Regeneration in Amphibians. The influence of inanition on that pheno-
menon, (in collaboration with S. HILLER and T. KROTKIEWICZ)
WISLOCKI, G. B. M.D., A.M., Prof. — Dept of Anat., Harvard Med.
School, 25, Shattuck Sir., BOSTON 15. Mass., U.S.A.
a. The cytology and histochemistry of the uterus and placenta. (Mammals)
WITSCHI, E. Ph.D.. Prof. — Dept of Zool., State Univ. of Iowa, IOWA
CITY, Iowa, U.S.A.

a. Neoplastic development of overripe frog eggs. (Anurans)

b. Metamorphosis of the amphibian ear. (Anurans)

c. Nutritional conditions in the incubating bird's egg.

WITTEK, Mile M. — Lab. d'Anat. et d'Embryol., Fac. de Med. de l'Univ.,
97, Rue aux Laines, BRUXELLES, Belgique.

a. Oogenesis and vitellogenesis of various Amphibians, (under direction
of J. PASTEELS)

b. Oogenesis of Reptiles. Lacerta vivipara (under direction of J. PAS-
TEELS)

WOELLWARTH, C. v. Dr Phil. — Heiligenberg-Inst. (Abtlg. Mangold),
(17b) HEILIGENBERG, Kreis Oberlingen/Bodensee, Deutschland
(Franzosische Zone),
a. Determination des Gehirns (Isolations- und Transplantations-experi-
mente). Triton (Amphibia)

WOERDEMAN, M. W. M.D., D.Sc. (Oxon). Prof. — Anat.-Embryol.
Inst.. Univ. van Amsterdam. Mauritskade 61, AMSTERDAM O., Hol-
land.

a. Lensregeneration. (Birds and Mammals)

b. Induction in tissue cultures and potencies of cells in tissue culture. (Birds
and Mammals)

c. Development of specific substances during induction and regeneration.
(Amphibia and Birds)

WOLFF. Mme Em. Dr es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab.
d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et de Biol,
generale. 12, Rue de l'Universite, STRASBOURG. France,
a. Role des hormones dans la differenciation du sexe par les methodes
d'injections d'hormones et des castrations embryonnaires. Determination
des caracteres somatiques precoces — syrinx et tubercule genital —
du Canard. Anas boschas (Aves) (En collaboration avec Et. WOLFF)

Wolff 98 Yc

WOLFF, Et. C. Dr es Sc, Prof. — Lab. de Zool. de la Fac. des Sci. et
Lab. d'Embryol. et Terat. exper. du C.N.R.S., Inst, de Zool. et de Biol,
gen., 12, Rue de l'Universite, STRASBOURG, France.

a. Recherches experimentales sur l'Embryologie et la Teratologic des
Oiseaux — Monstres simples, monstres doubles et poly-embryonie.

b. La differentiation sexuelle chez les Oiseaux, par les methodes de greffes,
de castration, d'injections d'hormones et d'explantations. Differenciation
normale et inversion sexuelle des gonades, des voies genitales et des
caracteres somatiques precoces. Gallus et Anas (Aves) (En collaboration
avec Mme Em. WOLFF, Mile Y. OSTERAG, Mile D. PFLEGER,
Mile B. SALZGEBER, A. HAMP.fi et G. STRUDEL).

c. Problemes relatifs a la regeneration des Planaires d'eau douce. Origine
des cellules de regeneration et processus d'induction dans la regeneration.
Polycelis nigra, Euplanaria lugubris (Turbellaries) (En collaboration
avec Mile F. DUBOIS et Th. LENDER).

d. Organogenese de la face et du systeme nerveux. Gallus domesticus
(Aves) (en collaboration avec W. HUBER)

e. Etude du developpement et de la regression du mesonephros chez
l'embryon d'Ofseau. Gallus (Aves) (en collaboration avec Mile K.
HAFFEN)

WSZELACZYNSKA, Miss M. Dr — Inst, of Histol. and Embryol., Med.

Acad., GDANSK, Poland,
a. Haploid embryos of Amphibians in parabiosis. Rana fusca
YAMADA, T. D.S., Asst Prof. — Biol. Inst., Fac. Sci., Nagoya Univ.,

Chigusa-Ku, NAGOYA, Japan.

a. Analysis of caudal induction in the isolated ectoderm by adult tissues.
Triturus pyrrhogaster (Amphibia)

b. Dorsalization of the isolated latero-ventral marginal zone through am-
monia-treatment. Triturus pyrrhogaster (Amphibia)

c. Double potential theory of early ontogenesis, its application to the
regionality of the organizer action. (Vertebrates)

d. Regional character of induction obtained in the isolates through implan-
tation of an extracted protein. Triturus pyrrhogaster (Amphibia)

e. Regional distribution of ribonucleic acid in early ontogenesis, studied
quantitatively. Triturus pyrrhogaster (Amphibia) (in collaboration with
K. TAKATA)

f. Regional distribution of amino-acids in early ontogenesis, studied quan-
titatively. Triturus pyrrhogaster (Amphibia) (in collaboration with
S. OSAWA)

YAMAMOTO, T. Dr Sc, Prof. — Biol. Inst., Fac. Sci., Nagoya Univ.,
Chigusa-Ku, NAGOYA, Japan.

a. On the mechanism of fertilization and activation in the egg of the fish.
Oryzias latipes (Pisces)

b. Experimental analysis of the development of sexual characters in the
fish. Oryzias latipes (Pisces)

YAO, T. B.Sc, Ph.D. — Dept of Biol., Nat. Univ. of Chekiang, HANG-
CHOW, China,
a. Biochemical and physiological studies of Drosophila melanogaster deve-
lopment. (Insecta)

YCAS, M. Ph.D. — Dept of Embryol., Div. of Biol.. California Inst, of
Technol., PASADENA 4, Cal., U.S.A.

Yn 99 Zw

a. Respiratory enzymes of sea-urchin eggs. Strongylocentrotus purpuratus,
Lytechinus pictus (Echinoderms)
YNTEMA, C. L. Ph.D., Prof. — Dept of Anat.. School of Med., State
Univ. of New York, SYRACUSE 10, N.Y., U.S.A.

a. Induction and differentiation of ear ectoderm. Amblystoma punctatum
(Amphibia)

b. Regeneration of aneural limbs. Amblystoma punctatum (Amphibia)

c. Development of autonomic nervous system. Gallus domesticus (Aves)
(in collaboration with W. S. HAMMOND)

d. Effects of sulfa drugs on mammalian embryo. Mus musculus (in col-
laboration with W. S. HAMMOND)

YOUNG, W. C. Ph.D., Prof. — Dept of Anat., Univ. of Kansas, Med.
School, LAWRENCE, Kan., U.S.A.

a. Reproduction as influenced by hypothyroidism and hyperthyroidism in
both male and female guinea pig. Cavia porcellus (Mammals)

b. Sexual behavior in the male guinea pig. Cavia porcellus (Mammals)
ZAAIJER, Miss J. J. P. Biol. Dra — Lab. for Exper. Histol., Fac. of Med.,

Univ. of Leyden, Wassenaarseweg, Boerhaavekwartier, LEIDEN,
Holland.

a. Factors governing dentin formation. Mus musculus (Mammalia)

b. Role of the odontoblasts in the formation of secondary dentin. Mus
musculus (Mammalia)

ZAcWILICHOWSKA, Miss K. D.Sc. — Zool. Dept. of the Jagellonian

Univ., KRAKOW (Cracow), St. Anne 6, Poland,
a. Early developmental stages of Asellus aquaticus L. (Crustacea)
ZEUTHEN, E. Dr Phil. — Lab. of Zoophysiology, Univ. of Copenhagen,

Nat. Sci. Fac, Juliane Mariesvej 32, COPENHAGEN 0, Denmark.

a. Study with Cartesian divers of mitotic rhythm in metabolism during
cleavage period. (Echinodermata and Amphibia)

b. Determination of desoxyribonucleic acid in eggs and embryos. (Am-

ZUCKERMAN. S. M.A., M.D., D.Sc, M.R.C.S., L.R.C.P., F.R.S., Prof.

— Dept of Anat., The Med. School, Birmingham Univ., Edgbaston,

BIRMINGHAM 15, England,
a. Study of oogenetic function. Rodents, Monkeys and Ferrets (Mammals)
ZWILLING, E. Ph.D., Assoc. Prof. — Dept of Genet., Coll. of Agric,

Univ. of Connecticut, Storrs Agric Exper. Stat., STORRS, Conn.,

U.S.A.

a. Hypoglycemia following injection of insulin into chick embryos of 30
hours of incubation; relation to rumplessness and micromelia. Gallus
domesticus (Aves)

b. Carbohydrate metabolism of insulin-treated chick embryos. Analyses
of embryo and yolk-sac membrane for glycogen, free sugar and total
carbohydrate. Gallus domesticus (Aves)

c Effect of nicotinamide on growth retarding action of insulin in chick

embryos. Gallus domesticus (Aves)
d. Analysis, by means of tantalum-foil blocking, of the development of the

tail in chick embryos. Gallus domesticus (Aves) (in collaboration with

Miss CRAIG)

N. Africa 100 N. Amerika (Canada)

LIST OF INSTITUTES

with Composition of Scientific Staffs

(geographical order)

N. AFRICA

Alexandria, Moharram Bey, Farouk GHAZZAWI, F. M. Prof.,

I Univ., Fac. of Sci., Head of Dept

Dept of Zool. * SEDRA, S. N. Lect. of Embryol.

S. AF

Bloemfontein, Univ. of the O.F.S.,
Dept of Zool.

DREYER, T. F. Dir.

* PLETZEN, R. van Lect.

* DREYER, Miss M. V. Asst
Cape Town, Seapoint, Beach Rd,
Div. of Fisheries

* BONDE, C. von Dir. [Officer

* DAVIES, D. H. Asst Prof.,
Johannesburg, Univ. of the Wit-
watersrand, Dept of Anat.

* GILLMAN, J. Prof.
Fac. of Sci., Dept of Zool.

* HORST, C. J. v. d. Dir.

* BALINSKY, B. I. Lect.
KNIEP, Mrs M. Lect.

* GILBERT, Miss C. Lect.

* AUSTOKER, Mrs J.

* STOCH, Miss Z.
Potchefstroom, Potchefstroom Univ.,
Dept of Zool.

EISELEN, G. T. S. Dir., Prof.

* RYKE, P. A. J. Docent

* EEDEN, G. A. van Docent
Pretoria, Univ. of Pretoria, Fac. of
Sci., Zool. Inst.

RICA

MALAN, D. E. Head

* ELOFF, F. C. Lect.
Rondebosch, Univ. of Cape Town,
Dept of Zool.

DAY, J. H. Prof., Dir.

* MILLARD, Mrs N. A. H.

* SILBERBAUER, Mrs B. I

SANDISON, Miss E.

Lect.

Jun.

Lect.

Hon. Res.

Asst

Stellenbosch, Univ. of Stellenbosch,

Fac. of Sci., Zool. Inst.

TOIT, C. A. du Prof., joint Dir.
VILLIERS, C. G. S. de Prof.,

joint Dir.

* MALAN, M. E. Sen. Lect.

Guest-workers

* CROMPTON, A. W.

* EEDEN, J. A. van

* PLETZEN, R. van

* VERMAAK, D.

* WESTHUIZEN, C. M. v. d.

* PENTZ, Miss K.

* RYKE, P. A. J.

* SMIT, A. L.

N. AMERIKA
CANADA
ALBERTA (Alta)
Edmonton, Univ. of Alberta, Med.
School, Dept of Anat.
* SHANER, R. F. Prof., Dir.

NOVA SCOTIA

Wolfville, Acadia Univ., Fact, of
Sci., Dept of Biol.

BAYNE. P. M. Prof., Chairman.
* McCALLION, D. J. Asst Prof.

ONTARIO (Ont.)

Guelph, Ontario Agricultural Coll.,
Dept of Entomol. and Zool.
* PEERS, Miss D. J.
Hamilton, McMaster Univ., Fac. of
Arts and Sci., Hamilton Coll.,
Dept of Zool.

WARREN, A. E. Prof., Dir.
(no embryol. work in progress)

N. Amerika (Canada)

Kingston, Rhode Island State Coll.,
Dept of Zool.

KNUTSON, H. E. Head of

Dept, Assoc. Prof.

* HARTUNG. E. W. Asst Prof.
Kingston, Queens Univ., Med.
School

* KROPP, B. N. Dir.

London, Univ. of Western Ontario,
Dept of Zool.

* BATTLE. Miss H. I. Prof.
LAING, Miss M. A. Res. Asst
HISAOKA, K. K. Res. Asst

QUEBEC

Montreal, Mc Gill Univ.,
Dept of Zool.

BERRIL, N. J.

(no data received)
Dept of Anat.

* LEBLOND, C. P.

101 United States (Cal.)

* GREULICH. R.

Montreal, 2900, Boulevard du Mont
Royal, Univ. de Montreal, Fac. de
Med., Dept d'Histol. et d'Embryol.

* BONIN, W. Dir.

* FRAPPIER, J. Asst
Ottawa, Univ. of Ottawa, Fac. of
Med.,
Dept of Anat.

AUER, J. Dir.
MENSCHIK, Z. Asst Prof,
(no data received over this year)
Dept of Histol.

* BELANGER, L. F.

SASKATCHEWAN

Saskatoon, Univ. of Saskatchewan,
Fac. of Anat.

JACKSON, G. L. Dir.

ALTSCHUL, R. Assoc. Prof.

(no data received over this year)

UNITED STATES

ALABAMA (Ala)

Birmingham 5, 620, South 20th Str.,
Med. Center of the Univ. of Alaba-
ma, Schools of Med. and Dent.,
Dept of Anat.

FOLEY, J. O. Chairman

SENSENIG, E. C. Assoc. Prof.

KLAPPER, Miss C. E. Asst

Prof.

BOYER, C. C. Asst Prof.

(no data received over this year)
Birmingham 15, Hosp. Centre,
Med. School,
Dept of Anat.

* BRANDT, W. (former Prof, of

Anat.)

CALIFORNIA (Cal.)

Berkeley 4, Univ. of California, Coll.

of Lett, and Sci.,

Dept of Zool.

KIRBY, H. Chairman
LONG, J. A. Prof. (Emer.)

* EAKIN, R. M. Prof.

* BERG, W. E. Asst Prof.

* HARRIS, M. Asst Prof.

* KUTSKY, P. B.

Los Angeles 24, Univ. of California,
Dept of Zool.

* SCHECHTMAN, A. M. Assoc.

Prof.

* NACE, G. W. Fellow Nat. Inst.

of Health

* SCHJEIDE, O. A.

* HOFFMAN, H.

Palo Alto, Stanford Univ.,
Dept of Biol.

DUSHANE, G. Ph.

WHITAKER, D.

(no data received)
Pasadena 4, California Inst, of
Technol., Div. of Biol.,
Dept of Embryol.

* TYLER, A. Prof., Head of Dept

* YCAS, M. Grad. stud, and

Teaching Asst

* JAFFE, L. Grad. stud, and

Teaching Asst
ATKINSON, E. Res. Asst
VOGT, Miss M.
(Hirnforschungs Inst., Neustadt,
Schwarzwald, Deutschland)

Cal'

102

(111.)

Stanford, Stanford Univ.,
Dept of Biol. Sci.

* TWITTY. V. C. Dir.

* NIU, M. C.

* ALGARD, F. T.

* HEATH, H. D.

* KING, R.

N. CAROLINA (N. C.)
Chapel Hill, Univ. of North Caro-
lina,
Dept of Zool.

* COSTELLO, D.F. Kenan Prof.,

Chairman of Dept

* LEHMAN, H. E. Asst Prof.

* HENLEY, Miss C. Res. Assoc.
Durham, Duke Univ., Dept of Zool.

GRAY, I. E. Dir., Prof.
HARGITT, G. T. Prof.
PEARSE, A. S. Prof. (Emer.)

* BOOKHOUT, C. G. Assoc.

Prof.

* HORN, E. C. Asst Prof.
f*JOHNSON, M. W. Asst Prof.

* RHODES, S.

* BAILEY, J. R.

* MANHOFF, L. J.

COLORADO (Col.)

Denver 7, 4200 east Ninth Ave,
Univ. of Colorado, Med. Center,
Dept of Pediatrics
GORDON, H. H. Head of Dept

* HERRMANN, H. Dir. Lab. of

Chem. Embryol.

* COHEN, S.

* DEMETRY, J.

* LUBCHENCO, L.

* McKENZIE, J.

* NEUKOM, B. J.

* ROTHFELS, U.

* SCHNEIDER, M. J.

CONNECTICUT (Conn.)

Middletown, Wesleyan Univ.,
Dept of Biol.

GOODRICH, H. B. Dir.

(no data received over this year)

* CASPARI, E. W. Prof.
New Haven, Yale Univ.,
School of Med.

* STONE, L. S. Prof.
Osborn Zool. Lab.

* NICHOLAS. J. S. Dir.

* HARRISON, R. G. Prof.

(Emer.)

* BOELL, E. J. Prof.

* STONE, L. S. Prof.

* POULSON, D. F. Assoc. Prof.

* METZ, C. B. Asst Prof.

* SHEN, S. C. Res. Asst

* TRINKAUS, J. P. Instr.

* WILENS, Miss S. Res. Asst

* KRUGELIS, Miss E. L. Res.

Asst
NOEL, Miss E.

* RUDNICK, Miss D.

* SIPPEL, T.

* VILLAFRANCA, G. de

* RAPPAPORT Jr., R.

New Haven 1 1 , 333, Cedar St, Yale
Univ., Sterlinghall of Med.

BURR, H. S.

(no data received)
Storrs, Univ. of Connecticut, Storrs
Agric. Exp. Stat., Coll. of Agric,
Dept of Genet.

* LANDAUER, W. Dir.

* ZWILLING, E. Assoc. Prof.

* CRAIG, Miss M. M.
Storrs, Univ. of Connecticut,
Dept of Zool.

CLARK, H.

(no data received over this year)

GEORGIA (Ga)

Augusta, Univ. of Georgia, Med.

School.

Dept of Anat.

* HEUSER, C. H. Prof. (Emer.)
Emory University,

Dept of Biol.

* CLEMENT, A. C.

* HUNT, E. L.

ILLINOIS (111.)

Chicago 37, Univ. of Chicago,

Physiol. Lab.

* LILLIE, R. S.

Biol. Sciences Div., Dept of Zool.

* WEISS, P. A. Prof., Dir.
GREGG, J. Res. Assoc.

(111.)

FERREIRA— BERRUTTI. P.

Res. Fellow

* ANDRES, G. Res. Fellow

* ROSSETTI, F. Res. Fellow

* OVERTON. J. H. Res. Asst
CAVANAUGH, M. W. Res.

Asst

* PETZOLD, R. Res. Asst

* RUSSO. E. Res. Asst

* McKEEHAN. M. Instr.

* MAPP, E. F. Doct. Cand.

* GARBER, B. Doct. Cand.

* CHIAKULAS, J. Doct. Cand.

* WASHINGTON, D. Doct.

Cand.

* HOLTZER, H. Doct. Cand.
RADNER, V. Doct. Cand.
SHEPHERD, E. Doct. Cand.

* WALLMANN, S. Doct. Cand.

* FISCHER, I.

* BLUMER, C.
Dept of Zool.

MOORE, C. R.

(no data received)
Evanston, Northwestern Univ.,
Cresap Biol. Lab.

* WATTERSON, R. L.
Urbana, Univ. of Illinois,
Dept of Zool.

* ADAMSTONE, F. B. Head of

Dept

* ROSE, S. M. Assoc. Prof.

* KUGLER, O. E. Assoc. Prof.

* HAY, E. D.

* TWEEDELL, K. S.

INDIANA (Ind.)

Notre Dame, Univ. of Notre Dame,

Dept of Biol.

DELANNEY, L. E.

(no data received)

IOWA

Ames, Iowa State Coll., Div. of Sci.,
Dept of Zool. and Entomol.
HARRIS, H. M. Dir.

* HAMILTON, H. L. Assoc. Prof.
Iowa City, State Univ. of Iowa,
Zool. Labs.

* WITSCHI, E. Dir. of Embryol.

Lab.

103 ( Md )

* BRUNER, Miss J. A. Res. Assoc.

* CHANG, C. Y. Res. Asst
Dept of Zool.

* KOLLROS, J. J.

KANSAS (Kan.)
Lawrence, Univ. of Kansas,
Dept of Zool.
HALL. R. E.

* JOHNSON, I. S.
Med. School, Dept of Anat.

* ROOFE, P. G. Prof., Dir.

* TRACY, H. C. Prof.

* YOUNG, W. C. Prof.

* LATIMER, H. B. Prof.

* LESHER, S. W. Asst Prof.

* BATTY, Th. Asst Instr.

* WINBLAD, J. Grad. stud.

* LEE. G. M. Instr.

KENTUCKY (Ky)

Louisville 2, 101, West Chestnut

Str., Univ. of Louisville, School of

Med.,

Dept of Anat.

HALL, E. K. Dir.

(no data received over this year)

MAINE (Me)

Bar Harbor, Box 558, Roscoe B.

Jackson Memorial Lab.

* LITTLE, C. C. Dir.
RUSSEL, Miss E. S. Res. Assoc.

* HUMMEL, Miss K. P. Res.

Assoc.

SAWIN, P. B. Res. Assoc.
RUNNER, M. N. Res. Assoc.
AVIS, F.
DIETZ, D.
FEKETE, E.

(data only received from C. C.
LITTLE and Miss K. P. HUM-
MEL)

MARYLAND (Md)

Baltimore 5, Wolfe and Madison
Strs, Carnegie Inst, of Washington,
Dept of Embryol.

* CORNER, G. W. Dir.

* BURNS. R. K. Member

* FLEXNER. L. B. Member

(Md)

* REYNOLDS, S. R. M. Member

* RAMSEY, Mrs E. M. Res.

Assoc.

* HERTIG, A. T. Res. Assoc.

(extramural)
BARTELMEZ, G. W.

Consultant

* GILLMAN, J. Res. Assoc.

(extramural)

* CSAPO, A. Fellow
Baltimore 18, The John Hopkins
Univ., Fac. of Phil.,

Dept of Biol.

* WILLIER, B. H. Prof., Dir.

* BURNS, R. K. Hon. Prof.

* RAWLES, Miss M. E. Res.

Assoc.

* KRAUSS, M. Instr.
CASE, J. F. Bruce Fellow
KONIGSBERG, I. Jun. Instr.

* BAKER, Miss A. Guest-worker
Bethesda, Nat. Cancer Inst.,
Developmental Physiol. Unit

* GROBSTEIN, C.
Maryland, Army Chemical Center,
Med. Div.

* BODENSTEIN, D. H. F. A.

MASSACHUSETTS (Mass)

Boston 15, 25, Shattuck Sir., Har-
vard Univ., Med. School,
Dept of Anat.

* WISLOCKI, G. B. Prof., Dir.

* LEWIS, F. T. Prof. (Emer.)

* SNYDER, F. F. Assoc. Prof.

* SINGER, M. Asst Prof.
Dept of Pathol.

* HERTIG, A. T.

Boston 15, Longwood Ave 22,
Boston Lying-in Hosp.

* HERTIG, A. T.
Brookline, 245, Pond Ave,
Free Hosp. for Women

* HERTIG, A. T.

* ROCK, J.

Cambridge 38, Divinity Ave,
Harvard Univ., Biol. Lab.

* HOADLEY, L. Prof. (Embryol.)

* ROGERS, K. T.

* ROSENBAUM, R. M.

104 (Mich.)

* DAWSON. A. B. Prof. (Hist.

and Cyt.)

ROMER, A. S. Prof. (Anat. and

Paleontol.)

* MOULTON, J. M.
HISAW, F. L. Prof.

(Endocrinol.)
BAILEY, I. W. Prof. (Plant.

Anat.)

* WETMORE, R. H.
Cambridge 39, Massachusetts Inst,
of Technol.,

Dept of Biol.

* EBERT, J. D.

Shrewsbury, 222 Maple Ave, Tufts
Coll., Med. School and Worcester
Foundation for Exper. Biol.
PINCUS, G.

* CHANG, M. C.
Woodshole, Marine Biol. Stat.

CHAMBERS, R. Dir.
SHAPIRO, H.

* MONROY, A. Guest-worker

* RUNNSTRoM, J. A. M.
Guest-worker

* LILLIE, R. S.

MICHIGAN (Mich.)

Ann Arbor, 2500 East Med. Build.,

Univ. of Mich.,

Med. School, Dept of Anat.

* PATTEN, B. M. Prof., Chairm.

of Dept

* BARRY, A. Assoc. Prof.

* KRAMER, T. C. Asst Prof.
Dept of Zool.

BROWN, D. E. S. Chairman

* STOCKARD, A. H. Assoc. Prof.

* MARKERT, C. L. Asst Prof.

* KEMP, N. E. Instructor
Minneapolis 14, Univ. of Minnesota,
Coll. of Sci., Lit. and Arts,
Dept of Zool.

MINNICH, D. E. Chairman

* SPRATT, N. T. Assoc. Prof.
School of Med., Inst, of Anat.

BOYDEN, E. A. Head of Dept
WELLS, L. J. Prof.
HARTMANN, J. F. Asst Prof,
(no data received over this year)

(Mo)

MISSOURI (Mo.)

Columbia, Univ. of Missouri,
Dept of Zool.

* SHAVER, J. R.
St Louis 5. Lindell and Skinker
Aves, Washington Univ., Grad.
School of Arts and Sci.,
Dept of Zool.

* HAMBURGER, V. Head of

Dept

* HALL, T. S. Assoc. Prof.

* MOOG, F. Asst Prof.

* LEVI-MONTALCINI, R. Res.

Assoc.

* WENGER, Mrs E. L. Res. Asst

* WENGER, B. S. Res. Fellow
(Dept of Pharmacol., School of
Med.)

* LEVI-MONTALCINI, Miss R.

NEW JERSEY (N. J.)

Princeton, Princeton Univ.,
Dept of Biol.

* BUTLER, E. G. Prof.

* FANKHAUSER, G. Prof.

* BONNER, J. T. Asst Prof.

* HARVEY, Mrs E. B.

Indep. Invest.
COOPER, Mrs R. S.

Indep. Invest.
Raritan, Ortho Res. Foundation

HARTMAN, C. G. Dir.
(no embryol. work in progress)

NEW YORK (N. Y.)

Brooklyn 3, 451, Clarkson Ave,
State Univ. of New York, Med.
Center at New York,
Dept of Pathol.

OLIVER, J. R. Prof., Dir.

* GRUENWALD, P. Asst Prof.
Brooklyn 10, Bedford Ave and Ave
H., Brooklyn Coll.,
Dept of Biol.

CHENEY. R. H.

(no data received)
Buffalo, 24, High Str., School of
Med., Dept of Anat.

* HUMPHREY, R. R.

105 (NY.)

Ithaca, Cornell Univ.,
Dept of Zool.

ADELMANN, H. B.
(no data received)
New York, New York Univ.,
Dept of Zool.

* DALTON, H. C. Prof.
New York 16, 477, First Ave, New
York Univ., Coll. of Dentistry,
Dept of Histol.

GOLDSMITH, E. D.

(no data received)
New York, 66th Str. York Ave,
Rockefeller Institute for Med. Res.

MIRSKY, A. Dir.

* MONROY, A. Guest-worker

* MONROY— ODDO, Mrs A.
Guest-worker

New York 33, 186th Str. and Am-
sterdam Ave, Yeshiva Univ.,
Dept of Biol.

* ATLAS, M. Dir.
New York, Flushing, L.I., Queens
Coll.,
Dept of Biol.

* COLWIN, A. L. Dir.

* COLWIN, Mrs L. H.
New York City 27, Broadway and
116 Str., Columbia Univ., Fac. of
pure Sci.,
Dept of Zool.

* MOORE, J. A. Prof., Head of

Dept

BARTH, L. G. Prof.
BARTH, L. J. Res. Assoc.

* GREGG, J. R. Asst Prof.

* MOORE, Mrs B. C. Res. Assoc.
New York City, 632, West 168th
Str., Columbia Univ., Coll. of Phys.
and Surg.

COPENHAVER, W. M.

RUGH, R.

(no data received)
Dept of Anat.

DETWILER, S. R.

(no data received)
Dept of Zool.

PEASE, D. C.

(no data received)

(N.Y.) 106

Rochester 3, Univ. of Rochester,
Coll. of Arts and Sci.,
Dept of Biol.

CHARLES. D. R. Dir.

* HOLTFRETER, J. K. F.

* STEVENS, L. C.

* TOWNES, Ph. L.

* MUCHMORE, W. B.

* LUMB, Miss E. S.
Schenectady, Union Coll.,
Dept of Biol.

CLARK, L. B.

* SCOTT, A. C.

Syracuse 10, Syracuse Univ., Med.
Dept of Anat. Coll.

* ARMSTRONG, Ph. Prof.,

Chairman

* YNTEMA, Ch. Prof.

* SPOFFORD, W. R. Assoc.

Prof.

* HAMMOND, W. Asst Prof.

OHIO

Columbus 10, Ohio State Univ.,
Dept of Anat.

KNOUFF, R. A. Chairman

BAKER, R. C. Prof.

EDWARDS, L. F. Prof.

GARRETT, F. D. Asst Prof.

LEACH, W. J. Asst Prof.

HAYES, E. R. Asst Prof.

SHELLHAMER, R. H. Grad.

Asst

(no data received over this year)

OREGON (Ore.)

Corvallis, Oregon State Coll.,
Dept of Zool.

* HILLEMANN, H. H.
Eugene, Univ. of Oregon, Lib. Arts
and Grad. Coll.,

Dept of Biol.

RISLEY, P. L. Head of Dept

HUESTIS, R. R. Prof.

CLANCY, C. W. Assoc. Prof.

SODERWALL, A. L. Asst Prof.

(no data received over this year)
Portland 3, Univ. of Portland, Coll.
of Sci.,
Physiol. Lab.

* MOORE, A. R. Prof., Dir.

(Pa)

* FLEMING, W. R. Res. Asst
Portland, Lewis and Clark Coll.

GILCHRIST, F. G.

(no data received)

PENNSYLVANIA (Pa)

Bryn Mawr, Bryn Mawr Coll.,
Dept of Biol.

GARDINER, Miss M. Dir.

* OPPENHEIMER, Miss J. M.
Philadelphia 4, Univ. of Pennsyl-
vania, School of Med.,

Dept of Anat.

* WINDLE, W. F. Prof.,

Chairman

* CLARK, E. R. Prof. (Emer.)

* WILLIAMS, R. G. Prof.

* HOGUE, Miss M. J. Assoc.

Prof.

* PIATT, J. Assoc. Prof.

* CHAMBERS, W. W. Asst

Prof.

* LIU, J. C. Assoc.

* LAVELLE, A. Asst Instr.

* WILLIAMS, S. C. Asst Prof.

* RHINES, Miss R. Asst Prof.

* WIERDA, J. L. Asst Prof.
Dept of Zool.

HEILBRUNN, L. V. Dir.

FLICKINGER, R. A.

NELSEN, O. E.

PARMENTER, C. L.

(no data received over this year)
Philadelphia 4, Wistar Inst, of Anat.
and Biol.

LEWIS, H. W.
Philadelphia 1 1 , Fox Chase, Burholm
Ave, Lankenau Hosp. Res. Inst, and
Inst, for Cancer Res.,
Dept of Embryol.

REIMANN, S. P. Dir. of Inst.

* BRIGGS, R. W. Head of Dept

* GREEN, Miss E. U. Res.

Assoc.

* KING, T. Res. Fellow
Philadelphia 29. Woman's Med.
Coll. of Pennsylvania,

Dept of Anat.

KUHLENBECK, H. Head of

Dept

(Pa)

107

(Wash.)

WEISSENBERG, J. R. Visit.
Prof, of Anat.

(no embryol. work in progress)
Pittsburgh 13, Univ. of Pittsburgh,
Dept of Anat.

* HOOKER, D. Head of Dept,

Prof.

* DONALDSON, J. C. Prof.

* HUMPHREY, Miss T. Prof.

* SNOOK. T. Asst Prof.
PRIMAN, J. Assoc. Prof.
REYER, R. W. Asst Prof.
CHAMBERS, W. F. Instr.
MERKLIN, R. J. Instr.

Dept of Biol. Sci.

GRAY, P. Head of Dept, Prof.
BUCHSBAUM, R. Prof.

* GENNARO Jr, J. F. Instructor

* McCAFFERTY, R. E. Instructor
ORTON, G. L. Lecturer

* GOODMAN, D. B. Grad. Stud.

Asst

* RIDLEY, Miss J. E. Grad. Stud.

Asst
WESTRICK. Miss M. Grad.

Stud. Asst

* WIRTH, Miss P. Grad. Stud.

Asst

RHODE ISLAND (R. I.)

Providence 12, Brown Univ.,
Arnold Biol. Lab.

* WILSON, J. W. Prof., Head of

Dept

* CHASE, H. B. Assoc. Prof.

* EDDS, Jr, M. V. Asst Prof.

* WEISZ. P. B. Asst Prof.

* ANDERSON, Miss I. L.

Guest-worker

TENNESSEE (Tenn.)

Memphis 3, Univ. of Tennessee,
Fac. of Biol. Sci.,
Med. Div.

HARRISON. F. Chief of Div.

of Anat.

* ALDEN, R. H. Head of Dept of

Micr. Anat.

* FITZGERALD, L. R. Instr.

* SMITH, Miss F. W. Asst Prof.

TEXAS (Tex.)

Austin 12, Univ. of Texas,
Dept of Zool.

OLIVER. C. P. Chairman

* CAIRNS, J. M. Asst Prof.
Galveston, Univ. of Texas, Med.
Branch,

Dept of Anat.

DUNCAN, D. Dir.

* SINCLAIR. J. G. Prof.

* BLOUNT, R. Prof.

Houston 5, 1200 M. D. Anderson
Blvd, Texas Med. Center, Baylor
Univ., Coll. of Med.,
Dept of Anat.

* ROBERTSON, G. G. Assoc.

Prof.

* PERRY, J. H. Assoc. Prof.

* HETTIG, R. A. Assoc. Prof.
Dept of Pathol.

* NEWTON, B. L. Asst Prof.

* GALINSKY, I.

VERMONT (Vt)

Burlington, Univ. of Vermont, Coll.
of Med., Dept of Anat., Lab. of
Histol. and Embryol.

NEWHALL, C. Chairman,

Assoc. Prof.

JORDAN. H. Prof.

DUNIHUE, F. Assoc. Prof.

STULTZ, W. Assoc. Prof.

NOVIKOFF, A. B.

(no data received over this year)

VIRGINIA (Va)
Charlottesville, The Univ. of Vir-
ginia,

Miller School of Biol.
k DENT, J. N. Assoc. Prof.
Morgantown, West Virginia Univ.,
School of Med.

DODDS. G. S. Dir.

CHANDLER, S. B. Prof.

WILLIAMS, T. W. Prof.

(no data received over this year)

WASHINGTON (Wash.)

Seattle 5, Univ. of Washington,
Dept of Zool.

MARTIN, A. W. Dir.

(Wash.) and S. Amerika

FERNALD, R. L.

* WHITELEY, A. H.
Spokane 1 1 , Gonzaga Univ.,
Dept of Biol.

FOUBERT Jr, E. L. Dir.

* GUBBINS. J. F. (S.J.) Asst

Prof.
Washington 7, Georgetown Univ.,
School of Med.

* KARCZMAR, A. G.

WISCONSIN (Wis.)
Madison, Univ. of Wisconsin,
Dcpt of Anat.

MORTENSEN, O. A.

Chairman

* BAST, T. H. Prof.

108 Asia (India)

* MOSSMANN, H. W. Assoc.

Prof.

* ORSINI, Mrs M. W. U.S. Pu-
blic Health Fellow, Nat. Cancer

Inst.
Milwaukee 3, 1131, West Wiscon-
sin Ave, Marquette Univ.,
Dept of Biol.

* REIS, R. H. Head of Dept,

Assoc. Prof.

STEIL. W. N. Prof.
McDONOUGH, E. S. Assoc.

Prof.
PERRY, J. C. Assoc. Prof.
BROWN, V. E. Asst Prof.

* O'BRIEN, J. P. Asst Prof.

* SAUNDERS, J. W. Asst Prof.

S. AMERICA

ARGENTINA

Tucuman, Miguel Lillo 205, Univ.
Nac. de Tucuman, Fac. de Ci. Biol.,
Inst, de Zool.

* CEI, J. M. Dir.

* PISANO, A. Prof. Embr.
BARBIERI, F. Ayudante Inv.

CHILE

Santiago, Av. Irarrazaval 849, Dept
de Med. Exper. del Servicio Nacio-
nal de Salubridad

* LIPSCHUTZ, A. Dir.

* IGLESIAS, R. Exp. Res.

* BRUZZONE, S. Exp. Res.
FUENZALIDA, F. Biochemist

* MARDONES, Miss E.

* BARAKONA. Miss M.

URUGUAY

Montevideo, Fac. de Med., Dept de
Histol. y Embriol.

* BUNO, W. Dir.

* FERREIRA, W. A. Asst

* FRANCHI, C. M. Asst

* ALVAREZ GUTTIfiRREZ,

Miss J. Asst

* GONZALEZ MARINO, P. Asst

ASIA

CHINA

Hangchow, Nat. Univ. of Chekiang,
Dept of Biol.

PAI, S. Prof., Dir.

* KIANG, H. M. Prof.

* YAO, T. Prof.

* CHU, J. Lect.

* CHOW, P. S. Lect.

* TSAI Miss N. Asst

Peiping, Ching Shan Tung Chieh,
Nat. Univ. of Peking, Coll. of Sci.,
Dept of Zool.

* CHUANG, H. H. Dir.
LI, J. C. Prof.

* TSENG, Miss M. P. Asst

* WANG, Y. T. Asst

* LIAO, Y. K. Asst

* LI, Miss S. C. Asst

INDIA

Behar, Patna, Prince of Wales Med.

Coll..

Dept of Anat.

* SINHA, T. P. Prof.
Colombo 8, Ceylon, Kynsey Rd,
Univ. of Ceylon, Fac. of Med., Dept
of Anat.

* CHANMUGAM, P. K. Dir.

Indonesia

INDONESIA

Bogor, Taman Kentjana 1, Balai
Perguruan Tinggi R.I.S., Fak.
Kedokteran Hawan.

* SLIJPER, E. J. Prof. Anat.,

Histol. and Embryol.

ISRAEL

Jerusalem, The Hebrew Univ.,
Dept of Zool.

* FELDMAN, M.

* EYAL-GILADI, Mrs H.

* SHULOW, A.

JAPAN

Kyoto, Kyoto Univ., Dept of Sci.,
Zool. Inst., Lab. of Embryol. and
Exp. Morphol.

* ICHIKAWA, M. Dir.
TAKAYA, H. Asst Prof.

* IKUSHIMA, N. Res. Stud.

* MASUDA, H. Res. Stud.

* OKADA, D. Res. Stud.
ASAYAMA, S. Guest-worker
AMANO, H. Guest-worker
KAJI, S. Guest-worker

Mie-Ken, Shima-gun, Sugashima-
mura, Nagoya Univ., the Sugashi-
ma Marine Biol. Stat.

* SUGIYAMA. M. Dir.

* ISHIKAWA, M. Asst

109 Australia

Nagoya, Tashiro-Cho, Chigusa-Ku,
Nagoya Univ., Biol. Inst.

* SATO, T. Prof., Dir.

* YAMAMOTO, T. Prof.

* YAMADA, T. Asst Prof.

* NAKANE, T. Lect.

* NAKANO, E. Lect.

* HASEGAWA, M. Asst

* TAKADA, K. Asst

* NAGATSU, R. Asst

* OSAWA, S.

* KUNO, M.

* HORI, R.

Sendai, Tohoku (Imperial) Univ.,
Inst, of Biol., Lab. of Embryol.

* MOTOMURA, I. Dir., Prof.
Tokyo, Meguro-ku, Tokyo Metro-
politan Univ., Fac. of Sci., Dept of
Biol., Embryol. Section

* DAN, K. Head of Sect.

* OKAZAKI, Miss K. Res. Asst

* ENDO, Y. Res. Assoc.

* DAN, Mrs J. C. Res. Assoc.
Yokohama, Kohoku, Hiyoshi, Keio
Univ. Japan, Biol. Inst.

* MORI, Y. Prof. Head of the

Biol. Inst.

* MORI, H. Asst Prof.

* HAMA, T. Lect.

* GOTO, T. Lect.

* KATAKURA, Y. Lect.

AUSTRALIA

Brisbane, George Str., Univ. of

Queensland,

Dept of Zool.

STEPHENSON, W. Prof.

* BLEAKLY, M. C. Lect.

* MATHER, W. B. Lect.
Glebe, N.S.W., Parramatta Rd,
Commonwealth Sci. and Industr.
Res. Org., F.D. McMaster Anim.
Health Lab.

GILL, D. A. Officer-in-Charge

* AUSTIN, C. R. Res. Officer

* BRADEN, A. W. H. Res.

Officer

* HARDY, Miss M. H. Res.

Officer i

* DAVIDSON, Miss P. Res.

Officer i

New Zealand, Auckland Univ. Coll.

STEPHENSON, N. G.

(no data received over this year)
Sydney, N.S.W.

Commonwealth Sci. and Industr.
Res. Org., Wool Biol. Lab.

* CARTER, H. B. Dir.

* HARDY, Miss M. H. Res.

Officer

* DAVIDSON, Miss P. Res.

Officer
Sydney, N.S.W. , Univ. of Sydney,
Dept of Zool.

* MURRAY, P. D. F. Dir.

1 (Guest-workers from C.S.I.R.O.,

Wool Biol. Lab.. 17 Randle St,

Sydney, N.S.W.)

Europe (Austria)

110

EUROPE

England

AUSTRIA

Innsbruck, Tyrol, Histol.-Embryol.
Inst, der Univ.

* SAUSER. G. Vorstand
OLBRICH, E. Asst

Wien IX, Wahringerstr. 13, Anat.
Inst, der Univ. Wien.

* KRAUSE, W. Priv. docent

BELGIUM

Bruxelles, 50, Av. F. D. Roosevelt,
Univ. libre de Bruxelles, Fac. des
Sci., Inst, de Zool. Torley-Rousseau,
Lab. de Zool.

* BRIEN, P. Dir.

* HERLANT-MEEWIS, Mme H.

Chef de travaux

* MARLIER, G. Asst
Bruxelles, 97, Rue aux Laines, Fac.
de Med. de l'Univ.,

Lab. d'Anat. et d'Embryol.

* DALCQ, A. M. Head of Dept

* PASTEELS, J. Prof.

* MULNARD, J. Asst

* WITTEK, Mile M.
Lab. d'Histol.

GERARD, P. Head of Dept

* CORDIER, J. Prof.

* LISON, L.

Bruxelles-Auderghem, 1850, Chaus-
see de Wavre, (Univ. libre de
Bruxelles), Lab. de Morphol. anim.

* BRACHET, J. L. A. Dir.

* STEINERT, M. Asst

* THOMAS, R. post grad. stud.
Foreign guest-workers

* THOMASON, D. (Oxford)

* NACE, G. W. (Los Angeles)

* LALLIER, R. (Paris)

Gent, Bylokekaai 1, Univ. of Gent,
Fac. of Med., Lab. of Anat.

* FAUTREZ, J. C. Dir.

* FAUTREZ-FIRLEFYN,

Mrs N. J.

* ANNEZ, Ch.

* VAKAET, L. C.

Liege, Quai Van Beneden 22, Inst.
Zool. Ed. Van Beneden, Dept de
Morph. des Chordes

* DAMAS, H. F. C. charge de cours

Louvain, 38, Rue des Recollets,
Univ. de Louvain, Inst. d'Anat.

* CAMPENHOUT, E. van Dir.

* MASY, S.

* MEYER, R. de

Louvain, 71, Rue de Namur, Univ.
de Louvain, Inst, de Zool., Lab.
d'Embryol.

* VANDEBROEK, G. Dir.

* JANSSENS, J.

* CLAES, M. T.

* BONE, E.

CZECHO-SLOWAKIA

(No data received over this year)

DENMARK

Copenhagen (f), Juliane Mariesvej
32, Univ. of Copenhagen, Nat. Sci.
Fac, Lab. of Zoophysiol.
BRANDT REHBERG, P. Head

* ZEUTHEN, E. Lect.
Copenhagen $), Universitetsparken
3, Inst, for Aim. Zool.

* BRONDSTED, H. V. Dir.

* HOLST CHRISTENSEN, P.

Amanuensis
OVERGAARD, C. Asst
Copenhagen, Valby, 8 Gl. Carls-
bergvej, Carlsberg Lab., Cytochem.
Dept

* HOLTER, H. Head of Dept

* L0VTRUP, S. Asst

ENGLAND

Ashford, Kent, Univ. of London,
Wye Coll.

FROUD, M. D.

(no data received over this year)
Bangor, Caernavonshire, Univ. Coll.
of N. Wales, Dept of Zool.

* BRAMBELL, F. W. R. Dir.,

Prof.

* HEMMINGS, W. A. Res.

* HENDERSON, Miss M. Lect.

* BURDON-JONES, C. Lect.
Birmingham 15, Edgbaston, Bir-
mingham Univ., The Med. School,
Dept of Anat.

* ZUCKERMAN, S. Dir.

England

* BRANDT, W. Lect.

* GREEN, S. H. Lect.

* MANDL, Miss A. M. Asst

* EAYRS, J. T.
Bristol, Univ. of Bristol,
Dcpt of Zool.

* SINGER, Miss J.
Cambridge, Downing St.,
Dept of Zool.

* GOODHART, C. B.
Cambridge, Gonville and Cains

NEEDHAM, J. Coll.

(no data received)
Cambridge, Strangeways Res. Lab.

FELL. Miss H.

(no data received)
London E. 1, Mile End Road, Queen
Mary Coll.

SMITH, J. E. Prof., Dir.

* NEWELL, G. E. Reader
FORREST, J. E. Sen. Lect.
CHAPMAN, G. Lect.
DIXEY, L. R. Asst Lect.
CARTHY, J. Asst Lect.

* SANTLER, J. E. Demonstr.

* DALES R P

* HEAYSMAR Miss J. E. M.
London E. 1, Turner Str., Univ. of
London. London Hosp. Med. Coll.,
Anat. Dept

* BOYD. J. D. Dir.

* BELLAIRS, A. d'A. Lect.

* PEACOCK, A. Lect.
London S.E. 1, Guy's Hosp., Med.
School. Biol. Dept

* BAXTER, E. W.

London W. 1, Middlesex Hosp.,
Med. School

WOODGER, J. H. Dir.

(no embryol. work in progress)
London W. 2. Norfolk Place,
Paddington, St Mary's Hosp., Med.
School

* FISK, A.

London S.W. 1 , Horsferry Rd,
Westminster Med. School

* O'CONNOR. R. J.

London W.C. 1, Gower Str., Univ.
Coll. London,
Dept of Embryol.

* HILL. J. P. Prof. (Emer.)

Ill England

* ABERCROMBIE, M. Lect.

* BELLAIRS (-MORGAN),

Mrs M. R. Asst Lect.

* ELWOOD, M. A.

* CARR, Miss E. B.

* SINGER, Miss J. (moving to
Dept of Genetics Bristol)

* GRUENEBERG, H.

Dept of Zool. and comp. Anat.
WATSON, D. M. S. Jodrell

Prof., Dir.

* NEWTH, D. R. Lect.

* FRASER, Miss E. A. Hon. Res.

* TRUSLOVE, G. M.

London W.C. 2, 62 — 65, Chandos
Place, Univ. of London, Charing
Cross Hospital, Med. School,
Dept of Anat.

* HAMILTON, W. J. Dir.

* HARRISON, R. J. Sr Lect.

* BOYD, J. D.

London W.C. 2, Strand, King's
Coll.

* MANTON, S. M.

* TRIBE, Miss M.

Med. Res. Council, Biophysics Res.
Unit

RANDALL, J. J. Hon. Dir.

* HANSON, Miss E. J. Member

M.R.C. staff

* MARTIN, Miss A. V. W.
Member M.R.C. staff

* WALKER, P. M. B. Member
M.R.C. staff

* DAVIES, H. G. Member

M.R.C. staff

* BOVEY, R. Member Agricul-
tural Res. Council

* BAYLEY, S. T.
Dept of Zool.

* ALLANSON(-BAXTER). M.
London, Regents Park, Bedford
Coll.,
Dept of Zool.

INCE, Miss F. E.

(no data received)
Oxford, The Univ. Museum, Dept
of Zool. and comp. Anat.

NEEDHAM. A. E.

(no data received)

England

Reading, Berkshire, Univ.,
Dept of Zool.

EALES, Miss N. B.

(no data received over this year)
Sheffield, Univ. of Sheffield,
Fac. of Med., Dept of Anat.

* DAVIES, F. Prof.

* KING, T. S. Lect.

* JOHNS, B. A. E. Asst Lect.
Dept of Zool.

EASTHAM, L. E. S. Prof.

* FRANCIS, E. T. B. Sr Lect.

* EASSA, Y. E. Guest-worker
St Andrews, The Univ.,

Dept of Zool.

* CALLAN, H. G.

FINLAND

Helsinki, Univ. of Helsinki, Fac. of

Med.,

Dept of Anat.

PESONEN, N. Head of Dept

* HJELMMAN, G. Prof.

* MUSTAKALLIO, M. Prosector
Helsinki, P. Rautatiekatu 13, Univ.
of Helsinki, Fac. of Mathem. and
Nat. Sci., Zool. Lab.,

Dept of Physiol.

SUOMALAINEN, P. Dir. of

Lab., Head of Dept

* TOIVONEN, S. Docent, Asst

* SUOMALAINEN, H. Asst

* KUUSI, Miss T.

Turku, Univ. of Turku, Zool. Lab.

* PESONEN, S. Docent, Asst

* MARJANEN, P.

FRANCE

Clermont-Ferrant, 1, Ave Vercinge-
torix, Lab. de Zool.
HOVASSE, R. Dir.

* LUTZ, H. Maitre de Conf.

* REYROLLE, Mile J. Chercheur

libre
Marseille, Place Victor Hugo, Lab.
de Zool. gen. de la Fac. des Sci. et
Stat, de marine d'Endoume (Mar-
seille)

ABELOOS, M. Dir.

(no data received over this year)

112 France

Nancy, (Meurthe & Moselle), 31,
Rue Lionnois, Lab. d'Histol. de
l'lnst. Anat. de la Fac. de Med. de
Nancy.

* BEAU, A. A. Prof. Chaire

d'Anat. norm, et d'Organog.

COLLIN, R. Prof. Chaire

d'Histol. et d'Embryol.

* DOLLANDER, A. Del. Agr.

Charge d'enseignement

d'Embryol.

DEBRY, G. Preparateur des

cours au Lab. d'Histol. et

d'Embryol.

LAURENT, M. Asst libre

* GRIGNON, G. Asst de travaux

prat. d'Histol.

Paris Ve, Place Marcelin Berthelot,
Coll. de France, Lab. de Morphol.
experim. et Endocrinol.

* COURRIER, R.

Lab. d'Embryogenie comp.
FAURE FReMIET, e.
(no data received)

* DEVILLERS, Ch. Sous-Dir.

* SKREB, N.

Paris Ve, 61, Rue de Buffon, Lab.
de Zool. du Museum Nat. de Paris
FAGE, L. Dir.

* VACHON, M. Asst

Paris Ve, 13, Rue Pierre Curie, Inst,
de Biol. Physicochimique

* LALLIER, R. A.

Paris Ve, 7, Rue Cuvier, Univ. de
Paris, Fac. des Sci., Lab. de Biol,
anim. du P.C.B.

* JOST, A. D. Maitre de Confer.

* BOZIC, B. Travailleur libre
Paris Ve, 12, Rue Cuvier, Univ. de
Paris, Fac. des Sci., Lab. de Biol,
anim. (P.C.B. section II)

* GALLIEN, L. Dir. du serv.

* DELSOL, M. Asst

* GODET, R.

Paris Ve, 26, Rue d'Ulm, Inst, du
Radium, Lab. d'Embryol. du Lab.
Pasteur

* RAYNAUD, A. Chef du Lab.

* FRILLEY, M. Chercheur et

Physicien

France

113

Germany

Paris Vie, 15, Rue Ecole de Mede-
cine, Fac. de Med., Lab. d'Embryol.

* GIROUD. A. Dir.

* DESCLAUX, P. Prof. agr.
LEFEBRE, Mme J. Lie. es Sci.

* LELIEVRE, A. Anc. Chef de

Trav.

* TEYSSEYRE, J.

* MORLON, C.

* BLOOMINGDALE, Mme B.
Paris Vie, 105, Boulevard Raspail,
Fac. des Sci. de Paris, Lab. devolu-
tion des etres organises

GRASSE, P. P. Dir.

* MIALHE, P. Asst

* GONTCHAROFF, Mile M.
Paris Xllle, III Rue L. M. Nord-
mann, Univ. Hopit. Broca, Ecole des
Hautes Etudes, Lab. d'Hormonol. et
Cytol. exper.

* MORICARD, R. Dir.

* GOTHIE, Mile S.

* CHIH, C. S.

* GUILLON, G.

Poitiers, Vienne, Fac. des Sci.,
Lab. de Zool.

* LARAMBERGUE, M. de
Strasbourg (Bas-Rhin), 1, Place de
1'Hopital, Fac. de Med., Inst. d'Em-
bryol. et de Morphol. exper.

* BENOIT, J. Dir.

* CLAVERT, J. Prof, agrege

* VINTEMBERGER, P. Chef de

Trav.

* ASSENMACHER, I. Asst

* STOLL, R. Asst
Strasbourg, 12, Rue de l'Univ., Inst,
de Zool., Fac. des Sci., Lab. de Biol.
Gener.

* BOUNOURE, L. Dir.

* SIGOT, A. Chef de travaux
Strasbourg, 12, Rue de l'Universite,
Inst, de Zool. et de Biol, gen., Lab.
de Zool. de la Fac. des Sci., et Lab.
d'Embryol. et Teratol. exper. du
C.N.R.S.

* WOLFF, Et. C. Prof., Dir.

* DUBOIS, Mile Fr. Chef de

Trav.

* HUBER. W. Asst

* STEPHAN, Fr. Asst

* HAY, Mile D. Asste

* SALZGEBER. Mile B. Atach.

de Rech.

* OSTERTAG, Mile Y. Atach.

de Rech.

* PFLEGER, Mile D. Atach. de

Rech.

* SCHUE, Mile M. Atach. de

Rech.

* HAFFEN, Mile K. Atach. de

Rech.

* WOLFF, Mme Em. Cherch.

libre

* LENDER, Th. Cherch. libre

* STRUDEL, G. Cherch. libre

* REINBOLD, A. Cherch. libre

* HAMPE, A. Cherch. libre
Talencc, (Gironde), 40, Rue Lamar-
tine, Fac. des Sci. de l'Univ. de Bor-
deaux, Lab. de Zool. et Physiol,
anim.

AVEL, M. Prof., Dir.

* CAMBAR, R. Maitre de Con-

fer, de Biol. Gener.

* HAGET, A. Chef de travaux de

Biol. anim.
Toulouse, Ecole Nat. Veter.

* BENOIT, J. A. A.

Ville d'Avray (Seine et Oise), 29,
Rue Pradier.

* ROSTAND, J.

GERMANY

Frankfurt Main Siid, Ludwig Rehn-
str. 14, Dr. Senckenbergisches Anat.
Inst. d. Univ. Frankfurt Main,
Med. Fak.

* STARCK, D. Prof., Dir.

* FRICK, H. Asst
SCHNEIDER, R. Asst

Gortingen, Burgstr. 51, Med. Fak.,
Anat. Inst, der Univ.

* BLECHSCHMIDT, E. Dir.
BACHMANN, R. Prosektor

* GRAUMANN. W. Asst
Gortingen, Nikolausbergerweg 75,
Mathem.-Naturw. Fak., Zool. Inst,
der Univ. Gottingen.

* HENKE, K. Dir.

* PIEPHO, H. Ob. Asst

* ULRICH, H. Wiss. Asst

Germany

Greifswald, Langefuhrstr. 32b,
Anat. Inst.

WEGNER, Prof., Dir.

PETER, K. Ordentl. Prof.
Hamburg 20, Schottmiillerstr. 1,
Med. Fak., Anat. Inst, der Univ.
Hamburg.

ZEIGER, K. Dir.

* BAUTZMANN, H. 1 Prosektor
Heiligenberg (17b), Kreis Oberlin-
gen/Bodensee, Heiligenberg Inst.

* MANGOLD, O. Abt.leiter

* WOELLWARTH, C. von Asst

* WAECHTER, Frl. H. Asst

* STARCK, O.

Kolu-Lindenthal, Kerpenerstr. 13,
f * ROTMANN, E. Dir.

* HARTWIG, H. Asst

* ENGLANDER, H. Asst
Marburg a. d. Lahn, Robert Koch
Str. 6, Anat. Inst, der Univ.

BENNINGHOFF, A. Dir.

* ROLLHAUSER, H. Asst

(Dozent)

* WENDT, G. G. Asst

* OKSCHE, A. Guest-worker

* HORST ROLLHAUSER,

Mrs J. ter Guest-worker
Marburg a. d. Lahn, Zool. Inst, der
Univ.

* LUTHER, W. Dir.
Mariensee iiber Neustadt am Rii-
benberge (20a), Brit. Zone, Max
Planck-Inst. f. Tierzucht und Tier-
ernahrung, Abt. f. Entw. Physiol.

* SEIDEL, F. Abt.leiter
Minister, Westf., Robert Koch Str.
31, Zool. Inst, der Westf. Landes-
Univ.

HARDE, Asst

(no data received over this year)
Neustadt, Schwarzwald, Hirnfor-
schungs-inst.

VOGT, Frl. M.

(new address for two years:

Pasadena 4, Calif., California

Inst, of Technology, Dept of

Biol.)
Stuttgart-Hohenheim, Zool. Inst, der
Landwirtschaftl. Hochschule.

* PFLUGFELDER, O. Prof., Dir.
DAUR, M. Asst

114 Italy

Tubingen, Wtirttemberg, Holderlin-
str. 12, Mathem.-Naturw. Fak.,
Zool. Inst, der Univ. Tubingen.
Hechingen, Zollerstr. 1,
Max-Planck-Inst. fiir Biol.

* KUEHN, A. Dir.
HARTMANN, M. Dir.

* RISLER, H. Asst

* REHM, Frl. M.

* SCHWINCK, Frl. I.
Wilhelmshaven, Max Planck Inst.

STICH, H.

(no data received over this year)
Wurzburg, Rontgenring 10, Univ.
Wurzburg, Naturwiss. Fak., Zool.
Inst.

* PENNERS, A. Inst, vorstand

* GOESZWALD, K. Abt.leiter

* KLOFT, W. Asst

* HUBL H. Asst

* SCHMIRLER, H. (im Lehrfach)

HUNGARY

(no data received over this year)

ITALY

Bologna (103), Via Belmeloro 8,
Fac. di Sci., 1st. di Anat. comp.

* PASQUINI, P. Dir.

* RAUNICH, L. Asst

* LEGHISSA, S. Asst
RINALDI, G. Techn.
ROSSI, B. Guest-Asst

* ALOISI, Miss G. Guest-Asst
Fac. di Med., 1st. di Istol. e Fisiol.
gen.

OLIVO, O. M. Dir.

RIZZOLI, C. Asst

(no data received over this year)
Cagliari, Viale S. Bartolomeo 1,
Fac. di Sci., 1st. di Anat. comp.

* STEFANELLI, A. Dir.

* THERMES, G. Asst

* BAFFONI, G. Asst
Catania (208), Via Androne 25, 1st.
di Zool. e Anat. comp. dell'Univ.,

* MONTEROSSO, B. Prof, ord.,

Dir.

PATANE', L. Aiuto
RONSISVALLE, C. Asst ord.
TENERELLI, V. Asst vol.

Italy

115

Netherlands

Genova, Univ. di Genova, 1st. di
Anat. e Fisiol. comp.

* REMOTTI, E. Prof., Dir.
Milano, Via Celoria 10, Univ. di
Milano, Fac. di Sci.,

1st. di Genet.

* BARIGOZZI, C. Dir.

* CASTIGLIONI, M. C. Asst
1st. di Zool. e Anat. comp.

* RANZI, S. Dir.

* SCHREIBER. B. Asst

* ORLANDI, Miss A. Asst

* CIGADA, Miss M. Asst

* AROSIO, R. Asst

* TOSI, Miss L. Asst

* CITTERIO. P. Grad. stud.

* LEONE, V. Guest-worker
Milano, Via Mangiagalli 31, Fac. di
Med. e Chir. dell'Univ. di Milano,
1st. d. Anat. umana norm.

BRUNI, A. C. Dir.

* PRETO PARVIS, V. Asst
FUMAGALLI, Z. Asst

Napoli, Via Mezzocannone 8, Fac.
di Sci., Univ. di Napoli, 1st. di
Genet.

* MONTALENTI, G. Dir.

* VITAGLIANO, G. Asst

* DE NICOLA, M. Res. Asst

* BATTAGLIA, B. Res. Asst
k CHIEFFI, G. Res. Asst
Napoli, Zool. Stat.

DOHRN, R. Dir.

BACCI, G.

GHIRETTI, F.

(no data received over this year)

* MONROY, A. i

* MONRO Y-ODDO, Mrs A. i

1 (At Rockefeller Inst.,
New York, U.S.A.
Padova, Via Loredan 6, Fac. di Sci.,
1st. di Zool. e Anat. comp.

* D'ANCONA, U. Dir.

* VANNINI. E. Chief Asst

* COLOMBO, G. Asst

* SABBADIN, A. Asst
Palermo, Via Archirafi 18, 1st. di

* REVERBERI, G. Dir. Zool.

* MINGANTI, A. Asst

* ORTOLANI, G. Asst

* ESPOSITO SEU MARGHE-
RITA, Miss M. Guest-worker

* FARINELLA-FERRUZZA.

Mrs N. Guest-worker

* PASSALACQUA, Miss A.

Guest-worker
Perugia, S. Pietro, Fac. d. Med.,
1st. di Biol. gen.

* SPIRITO, A. Dir.

* PITOTTI, M. C. Aiuto
BONDI, C. Asst F.F.
BONDI, D. Asst V.

* NICOLETTI, B. Allievo interno
Pisa, Via A. Volta 4, Fac. di Sci.,
1st. di Zool. e Anat. comp. dell'Univ.

* BENAZZI, M. Dir.

* PARDI, L. Asst

* LEPORI, N. G. Asst

* PAPI F. Asst

* BENAZZI-LENTATI, Mrs G.
Roma, Via Borelli 50, Fac. di Sci.,
1st. di Anat. comp. dell'Univ. di
Roma

* COTRONEI, G. Dir.

* PERRI, T. Asst

* URBANI, E. Asst

* URBANI-MISTRUZZI,

Signora L. Asst
Siena, Piazza S. Agostino 4, Fac.
di Med., 1st. di Biol, e Zool. gen.

* PADOA, E. Prof., Dir.

* OMODEO, P. Asst

Torino, Corso Massimo d'Azeglio
52, Inst, of human Anat., Fac. of
Med.

LORETI, F. Director

* AMPRINO, R. M. Aiuto

* FILOGAMO, G. Asst

* VIGLIANI, F. Asst

* FRANCESCHINI, M. Asst

* LEVI, G. Prof. (Emer.), Anc.

Dir.

* GODINA, G. Guest-worker
Torino, Via Giovanni Giolitti 34,
Inst, of Comp. Anat.

CORTI, A. Dir.

* GUARDABASSI. Miss A.

* SACERDOTE, Miss M.

NETHERLANDS (Holland)

Amsterdam, Free Calvinistic Univ.,
Zool. Inst.

* LEVER, J. Doc.

Netherlands

Amsterdam (O), 61, Mauritskade,
Univ. of Amsterdam, Fac. of Med.,
Anat.-Embryol. Inst.

* WOERDEMAN, M. W. Prof.,

Dir.

* TRAMPUSCH, H. A. L. Chief

Asst Lect.

* CATE, G. ten Chief Asst

* HUYBERS, Miss M. M. Asst

* LANGMAN. J. 2nd Asst
Amsterdam, 44, Plantage Doklaan,
Univ. of Amsterdam, Zool. Lab.

* SLIJPER, E. J. Dir., Prof.

* STELT, A. v. d.
Groningen, Oostersingel 69, Univ.
of Groningen, Fac. of Med., Dept
of Anat. and Embryol.

* ARIfiNS KAPPERS, J. Dir.

* BIJTEL, Miss J. H. Lect.

* MOLL, J. Prosector

* LANGEVOORT, H. L. Chief

Asst

* WESTRA, S. Asst

* JAGER, K. W. Asst
Groningen, Reitemakersrijge, Zool.
Lab. of the Univ. of Groningen.

BAERENDS, G. P. Dir.
BAERENDS-van ROON,

Mrs J. M.

(no embryological work in progress)

Leiden, Wassenaarseweg, Boerhaa-

vekwartier, Univ. of Leyden, Fac.

of Med., Anat.-Embryol. Lab.

* DANKMEIJER, J. Dir.

* ODE, Miss E. Prosect.

* DEKKER, Miss A. Asst

* WEL, W. H. v. d. Asst

* COLLISTER, Miss R. M. Asst

* KERKHOF, Miss A. M. Oud

Prosect.

* BOUR, J. W. H. Oud Asst

* LUYENDIJK, W. Oud Asst

* BAX, W. A. Oud Asst

* HEYN, C. B. Oud Asst

* ELSHOUT, Miss A. M. Oud

* SNELLEN, H. A. Asst
Lab. for Exper. Histol.

* GAILLARD, P. J. Dir.

* ZAAIJER, Miss J. J. P.

Conservator

* HOGEWONING, C. H. Asst

* OORT, J. Asst

116 Netherlands

Utrecht, Biltstr. 172, State Univ. of
Utrecht, Vet. Fac, Vet.-Anat. Inst.

* KREDIET, G. Dir.

* BRUINS, J.

Utrecht, Janskerkhof 2, Hubrecht
Lab., Internat. Embryol. Inst.

* RAVEN, Chr. P. Prof., Dir.

* NIEUWKOOP, P. D. Adj. Dir.

* PLANQUE, B. de Asst

* FABER, J. Asst

* EYAL— GILADI, Mrs H.
(Jeruzalem) Guest- worker

* GYLLENSTEN, L. (Stockholm)
Guest-worker

* LOMBARD, G. L. (Pretoria)
Guest-worker

* STEYN, W. (Bloemfontein)
Guest-worker

* VANNINI, E. (Padua)
Guest-worker

Guest-workers, Stud.

* BOTERENBROOD, Miss E. C.

* EGMOND, Miss M. T. C. van

* HAIJE, Miss S. C. A.

* KREMER, Miss A.

* KUIPER, J. W.
Utrecht, Janskerkhof 3, State Univ.
of Utrecht, Fac. of Sci., Zool. Lab.

* RAVEN, Chr. P. Dir.

* BRETSCHNEIDER, L. H.

Lect.

* KAMER, J. C. v. d. Asst in

Chief

* BEZEM, J. J. Asst

* SOBELS, F. H. Asst
Guest-workers, Stud.

* ARKEL, G. A. van

* BERGE, T. H. ten

* BOTERENBROOD, Miss E. C.

* BROEK, Miss E. v. d.

* BRUNNEKREEFT, F.

* DUYKER— DE BEER,

Mrs A. S.

* EGMOND, Miss M. T. C. van

* HEESCH, Miss W. H. T. van

* KOK, J. C. N.

* KUIPER, J. W.

* LEE, H. J. v. d.

* LOO, Miss R. P. van

* NIJENHUIS, E. D.

* NIJENHUIS, L. E.

* OPPENOORTH, F. J.

Netherlands

* SMIT, Miss E. J. H.

* SPRONK. N.

* STALFOORT. Miss T. G. J.

* UTRECHT. W. L. van
+ VEEN. H. W. v. d.

* VERHEYEN. F. J.

Utrecht, Janskerkhof 3. State Univ.
of Utrecht, Med. Fac. Anat.-Em-
bryol. Lab.

MIJSBERG, W. A. Dir.

* DETH. J. H. M. G. van

Prosector

* BROERS. C. J. Asst

* EDGAR, G. W. F. Asst

NORWAY

Oslo, Univ. of Oslo, Anat. Inst.

* JANSEN, J. Dir.

* HARMARK, W. Asst
Paradis,

* UBISCH, L. von Prof. (Emer.)

POLAND (Polska)

Gdansk, Med. Acad., Inst, of Histol.
and Embryol.

* HILLER, S. Dir.

* WSZELACZYNSKA, M.

Assoc. Asst

* GODLEWSKI, H. Assoc. Asst
KRAHELSKA, J. Asst

* KROTKIEWICZ, T.

* PIOTROWSKA, J.

* WISKONT, H.
Krakow, sw. Anny 6, Zaklad Anat.
Porownawczej U.J. im H. Hoyera

* GRODZINSKI. Z. Head of Inst.

* MARCHLEWSKI, J. Asst

* DATKOWNA. H. Asst

* GAZDA. A.

* SOLEWSKI, W.
ALEXANDROWICZ, St.

Krakow (Cracow), St. Anne 6,
Jagellonian Univ., Fac. of Sci., Zool.
Dept

* SMRECZYNSKI, S. Head of

Dept

* CZAPIK. A. Asst
KRZANOWSKI, A. Asst
KRZYSZTOFOWICZ. A. Asst

* WEGLARSKA, B. Asst

* ZACWILICHOWSKA. K. Asst

117 Poland

Lodz, Narutowicza Str. 60, Med.
Acad., Inst, of Histol. and Embryol.

* BAGINSKI. St. Dir.
LEWINSKA, H. Lect.
HAJDUKIEWICZ, J. Lect.

Lodz, Nowotki 137, Med. High-
school of Lodz, Fac. of Med.,
Dept of Endocr.

* BER, A. Head of Dept

* ORLOWSKI, A. Asst
Poznah, ul. Swiecickiego 6, Fac. de
Med. de l'Acad. de Med. a Poznan,
Inst. d'Histol. et d'Embryol.

* KURKIEWICZ, T. Dir.
MIETKIEWSKI, C. Docent

* HOWORKA, E.
Szczecin, The Acad, of Med.

* SLOTWINSKI, J. Prof.
Torun, Sienkiewicza 30, Zaklad
Anat. Porownawczej i Embriol.
Uniw. M. Kopernika

SZARSKI, H. Dir.

* STRAWINSKI, S. Asst
Warszawa, ul. Chalubinskiego 5,
Acad, of Med., Inst, of Histol. and
Embryol.

ZWEIBAUM, J. Dir.

* KRAINSKA. Mrs M. K.
" KONOPACKA, Mrs B.
Wroclaw, ul. Chalubinskiego 6a,
Uniw. Wroclawskiego, Zaklad
Histol. i Embryol.

* SEMBRATOWA, Z. Dir.

* RADKOWA, M. Asst
Wroclaw, ul. Sienkiewicza 21,
Zaklad Anat. Porownawczej. Inst.
Zool. Uniw.

* SZARSKI. K. W. Dir.

* ORSKA, Miss J. Adjunct (Asst

Lect.)

* BUCHTOWNA, Miss A.

Sr Asst

* WINOWSKA. Mrs J. Sr Asst
Wroclaw, ul. Sienkiewicza 21, Inst.
Zool., Uniw. we Wroclawiu,
Zaklad Zool. Ogolnej

* SEMBRAT. K. Dir.

* RADECKA, E. Asst

* PASCHMA. M. Asst

* STUCHLY. Z. Adj.

Portugal

PORTUGAL

Lisboa, Fac. de Med., Inst, de
Histol. e Embriol.

CELESTINO da COSTA, A.

Dir.

(no data received over this year)
Lisboa, Univ. de Lisboa, Museo Bo-
cage da Fac. d. Ci.

FONSECA SACARRAO, G. da

(no data received over this year)

ROUMANIA

(No data received over this year)

SPAIN

Cadiz, Fac. de Med., Lab. de Anat.
y Embriol.

* ORTS LLORCA, F. Dir.
MARTINEZ ROVIRA, J. L.

Prof, of Anat.
MARTINEZ SANCHEZ, M.

Prof, of Histol.

SWEDEN

Lund, Biskopsgatan 7, Tornblad
Inst, for comp. Embryol.

* GLIMSTEDT, G. Dir.

* HAKANSSON, R. Amanuensis

* KRABBE, K. H. Guest-w.

* VVALANDER, A. Guest-w.

* HALL, P. Guest-w.

* KALLEN, B. Guest-w.
" BERQUIST, H. Guest-w.

WEDIN, B. Guest-w.
Lund, Zool. Inst, of the Univ. of
Lund, Embryol. Dept

GISLEN, T. R. E. Prof.

WEDIN, B. Docent

* WTNGSTRAND, K. G. Fil. lie.

* DIDING, S. Amanuensis
Stockholm, 116, Drottninggatan,
Univ. of Stockholm, Zootom. Inst.

* HOLMGREN, N. F. Anc. Dir.

* PEHRSON, G. T. Dir.

* JOHNELS, A. G. Docent

* OLSSON, R. Asst
MACS, Miss K. Asst

* KINDAHL, Miss M. E.

Guest-worker

118 Switserland

Stockholm, 16, Norrtullsgatan, Fac.
of Sci. and Mathem., Wenner-Grens
Inst, of exper. Biol.

* RUNNSTROM, J. A. M. Dir.

* LINDBERG, N. O. H. Assoc.

Prof.

* BOREI, H. Assoc. Prof.

* MONNE, L. M. W. A. Asst

Prof.

* PERLMANN, H. P. Asst

* BACKSTRoM, S. Asst

* GUSTAFSON, U. T. Asst

* HULTIN, J. M. T. Asst

* LINDVALL, S. Asst

* IMMERS. J. Asst

* VASSEUR, E. J. E. Asst

* WICKLUND, Miss E. Asst
Stockholm 60, Solnavagen 1, Karo-
linska Inst., Histol. Inst., Embryol.

* HAGGQVIST, G. Dir. Dept

* GYLLENSTEN, L. J. W. Asst
Uppsala, Univ. Uppsala, Anat. Inst.

* HOLMDAHL, D. E. Dir.
Uppsala, Uppsala Univ., Zool. Inst.

* H6RSTADIUS, S. Prof., Dir.

* JAGERSTEN, G. Prof.
KULLENBERG, B. Laborator

(Assoc. Prof, of Entomol.)

* HOLM, K. A. Docent
(Curator of the Museum)

* NYHOLM, K. G. Docent
PETERSEN, B. Docent

Uppsala, Villavagen 9, Fac. of
Mat-Nat. Sci., Inst, for Zoophysiol.

* LINDAHL, P. E. Dir.

* SWEDMARK, B. G.

SWITSERLAND

Basel, Rheinsprung 9, Zool. Anstalt
der Univ.

PORTMANN, A. Dir.

GEIGY. R. Prof.

NOESCH, H.

STEIGER, H.

LOSCHER, M.

(no data received over this year)
Basel, Socinstr. 57, Tropeninstitut

* GEIGY, R. Dir.
Bern, Buhlstr. 26, Med. Fak., Univ.
Bern, Anat. Inst.

* HINTZSCHE, E. Dir.

Switserland

119

U.S.S.R.

BLUNTSCHLI, H. Kust.

* STRAUSS, F. Pros.

* MOSSMANN, H. W.

Bern, Sahlistr. 8, Philosoph. Fak.,
Zool. Inst, der Univ. Bern

* BALTZER, F. Dir.

* ROSIN, S. Asst

* TSCHUMI. P. Asst
CHEN, P. Sh. (temporarily)

Abt. fur Zoophysiol.

* LEHMANN, F. E. Dir.

* BRETSCHER, A. Asst

* BISS, Mrs R.
DETTELBACH, H. R.

* TARDENT, P.

* TSCHUMI, P.

Bern, Waldau, Hirnanatom. Inst,
der psychiatr. Univ.-klinik, Med.
Fac.

* GRONTHAL, E. Dir.

* FEREMUTSCH, K. Asst

* HEIMANN, H. Asst
Biiren a. A., Kant. Bern

* ROETHELI, A.
Fribourg, Inst, de Zool.

KAELIN, J.

(no data received)
Geneve, Rue de Candolle, Univ. de
Geneve, Inst, de Zool. et Anat.
comp.

GUYeNOT, E. Dir.

(no data received over this year)
Geneve, 20, Rue Ecole de Med.,
Ecole de Med., Inst. d'Anat., Lab.
de Neurohistol.

BAUMANN, J. A. Dir.

WEBER, A. Dir. du Lab. de

MICHELI, A. [Neurohistol.

NEIGER, M.

(no data received over this year)
Lausanne, Fac. de Med., Inst.
d'Histol.

* GALLERA, J.

Zurich, Gloriastr. 19, Univ. Zurich,
Med. Fak., Anat. Inst.

* ToNDURY, G. Prof., Dir.

* THEILER, K. Asst

* SCHENK, R. Asst

Ziirich 6, Kunstlergasse 16, Univ.
Zurich, Naturw. Fak., Zool.-vergl.
Anat. Inst.

* HADORN, E. Dir.

* STEINER, H. Prof.

* GLOOR. H. Instr.

* ANDERS, G.

* BUCHER, N.

* KOCHER, W.

UNITED KINGDOM (U.K.)

Edinburgh 9, King's Buildings,
West Mains Rd, Inst, of Anim.
Genet,

* WADDINGTON, C. H. Dir.

a) Univ. Dept of Genet.

* CLAYTON, Mrs R. M.

Res. Asst, Ph. D. stud.

* DEUCHAR, Miss E. M.

Ph. D. stud.

* MOOKERJEE, S. Ph. D. stud.

* ROBERTSON, Mrs F. M.

Ph. D. stud.

b) Genet. Lab., Anim. Breeding and
Genet. Res. Org.

* BEATTY, R. A. Sr Sci. Officer
FALCONER, D. S. Sr Sci.

Officer

* FISCHBERG, M. Res. Grantee

* FRASER, A. S. Res. Grantee

* REEVE, E. C. R. Sr Sci.

Officer

* ROBERTSON, F. W. Sr Sci.

Officer

c) Med. Res. Council

* CARTER, T. C. M.R.C. Sci.

Staff

* PHILLIPS, R. J. S. M.R.C. Sci.

Staff
Edinburgh, West Mains Rd, Univ.
of Edinburgh,
Dept of Zool.
RITCHI, J. Dir.

* JONES, B. M. Lect.

* TUFT, P. H. Lect.

* HALE, L. J. Lect.
" KILLE, R. A. Asst

* DOUGLAS, R. I. Asst

* CLEAT, N. D. Res. stud.

* WALLACE, D. R. J. Res. stud.
STEVEN, D. M.

U.S.S.R.

(No data received)

120

LIST OF SUBJECTS

with Names of Investigators

(arranged according to organ ■yitemi and •yitematic group*)

GENERAL DIVISION

CLASSIFICATION INTO GENERAL RUBRICS

I Descriptive and comparative embryology
II Experimental developmental morphology

III Developmental physiology

IV Development and genetics
V Development and pathology

VI Regeneration
VII Metamorphosis

CLASSIFICATION OF SYSTEMATIC GROUPS AND SPECIAL
ORGAN-SYSTEMS (to be used for all rubrics)

Systematical subdivision
EV Evertebrata

A Porifera

B Coelenterata

C Vermes and Onychophora, Tardigrada and Linguatulida

D Arthropoda

E Mollusca

F Bryozoa, Entoprocta, Brachiopoda and Hemichordata

G Echinodermata

H Urochordata

V Vertebrata
LV Lower Vertebrates
I Pisces
J Amphibia
HV Higher Vertebrates

K Reptilia

L Aves

M Mammalia

Subdivision of special organ systems

1 Skin

a general subjects
b exo-skeleton
c teeth
d hair
e feathers
f sense organs
g glands
h mammae
i pigment patterns

2 Nervous system

a general subjects

121

b central nervous system

1 brain

2 spinal cord

c accessory organs

1 paraphysis

2 pariental organ

3 pineal body

4 hypophysis
d ganglia

1 cephalic ganglia

2 spinal ganglia
e nerves

1 cephalic nerves

2 spinal nerves

f para- and sympathetic and intramural nervous system

1 para- and sympathetic nervous system

2 intramural nervous system
g meninges

Special sense organs
a nasal organ
b eye

1 eye

2 lens
c ear
Skeleton

a general subjects

b embryonic temporary endo-skeleton

c skull

d truncal skeleton

e limbs and wings

f joints

Muscular system

a general subjects

b skeletal muscles (head, trunk and tail)

c visceral muscles (head and trunk)

d muscles of limbs and wings

Alimentary tract

a general subjects

b mouth- and pharyngeal cavities

c intestinal tract

d proctodaeum

e salivary glands

f liver

g pancreas

Respiratory organs

a general subjects

b external gills

c internal gills

d lungs and larynx

e air-bladder

122

8 Heart, vascular system and blood

a general subjects
b heart
c/d arterial and venous system
e capillary system
f blood

9 Coelomic cavity and endothelia, lymphatic system and connective tissue
a/b coelomic cavities and endothelia

c lymphatic system
d connective tissue

10 Urogenital system and sex determination
a general subjects

b/c kidney and urinary ducts
d/e/f gonads (ovary and testis), genital tracts and accessory glands
g sex determination

11 Endocrine glands
a general subjects
b hypophysis

c thymus

d thyroid gland

e gonads

f adrenals

g pancreas

I. DESCRIPTIVE AND COMPARATIVE EMBRYOLOGY

SUBDIVISION

1 Theoretical problems

2 Methods and technics

3 General subjects

4 Initial development

a Primordial germ cells

b Gameto-, ovo- and spermatogenesis

c Maturation

d Ovulation and oviposition

e Activation and ferilization

f Parthenogenesis

g General subjects

5 Cleavage and mitosis
a Cleavage

b Mitosis

6 Further development o[ Invertebrates

(including complete and partial (e.g. early) development)
EV Evertebrata

A Porifera

B Coelenterata

C Vermes and Onychophora, Tardigrada and Linguatulida

D Arthropoda

E Mollusca

F Bryozoa, Entoprocta, Brachiopoda and Hemichordata

1. 1

123

I. 4b.

G Echinodermata
H Urochordata

7 Further development of Vertebrates

(including complete and partial (e.g. early) development)
a General investigations

1 Partial development

2 Complete development

3 Implantation and placentation

b Early development, gastrulation, etc.

1 Early development

2 Gastrulation and formation of germ layers

3 Development of foetal membranes
c Neurulation, etc.

1 Neurulation

2 Development of neural crest

3 First larval development

d Development of part of the organism

1 Head

2 Limb and wings

3 Tail

e Development of special organ-systems
(Cf. general subdivision p. 120 — 122)
f Histo- and cytogenesis

8 Growth and differentiation
a Growth

b Growth and differentiation
c Differentiation

1 Theoretical problems

Ubisch, L. v. — a

EV + V

Steiner, H. — b

V

Ubisch, L. v. — f

I

2 Methods and technics
Vandebroek, G. — i EV
Wenger, B. S. — c EV + V
Sauser, G. — c M

3 General subjects

Dales. R. P. — a C

Newell, G. E. — a C

Jones, B. M. — a D

Shulow, A. — a D

Elshout, Miss A. M. — a V
Rostand, J. — c

Moore, J. A. — c J

Lewis, F. Th. — a HV

Hamilton, H. L. — a L

Horst, C. J. v. d. — a M

4 Initial development
a Primordial germ cells

Bounoure, L. — a

Tondury, G. — c M

b Gameto-, ovo- and spermato-
genesis

Gontcharoff, Miss M. — b C

Lepori, N. G. — a C

Omodeo, P. — b C

Baffoni, G. — c D

Larambergue, M. de — b E
Lehmann, F. E. — d EV

Biss, Frau R. — a C

Mulnard, J. — a D

Bovey, R. — b D
Vannini, E. — a LV
Bovey, R. and Callan, H. G. — c
Callan, H. G. — b
Wittek, Miss M. — a

Wittek, Miss M. — b K

Clavert, J. — a L
Bayley, S. T.; Hanson, E. J. and

Randall, J. T. — a E

I. 4b.

124

I. 6.E.

Austin, C. R. and

Braden, A. W. H. — a M

Bovey, R. — a M

Stoch, Miss Z. — a M

c Maturation

Poulson, D. F. — a D

Chih, C. S. and

Moricard, R. — a M

d Ovulation and oviposition

Gontcharoff, Miss M. — b C

Pardi, L. — a D

e Activation and fertilization

Benazzi, M. — a C

Benazzi-Lentati, Mrs G. — a C

Davies, D. H. — a I

Austin, C. R. and

Braden, A. W. H. —a M

Mossman, H. W. and

Strauss, F. — c M

£ Parthenogenesis

Benazzi, M. — a C

Lepori, N. G. — a C

Goszwald, K. — c D

Monterosso, B, — a D

Pardi, L. — a D

g General subjects

Papi, F. — a C

Weglarska, Miss B. — a D

Bretschneider, L. H. — a E

Vakaet, L. C. — a I

Cei, J. M. — a J

5 Cleavage and mitosis

a Cleavage

Kiihn, A. — d B

Colombo, G. — a
Gothie, Miss S. and
Moricard, R, — b
Rosenbaum, R. M. — b J

b Mitosis

6 Further development of
Invertebrates

(including complete and partial
(e.g. early) development)

EV Evertebrata

Vandebroek, G. — h

A Porifera

B Coelenterata

Kiihn, A. — d
Leghissa, S. — b

C Vermes and Onychophora,
Tardigrada and Linguatulida

Annez, Ch. — a
Bookhout, C. G. — a
Bookhout, C. G. — b
Chapman, G. — a
Chapman, G. — b
Dales, R. P. — a
Jagersten, K. G. M, — a
Manton, S. M. — a
Newell, G. E. — a
Nyholm, K. G. — a
Omodeo, P. with students — a
Papi, F. — a
Paschma, M. — a
Radecka, E. — a

D Arthropoda

Caspari, E. — a
Castiglioni, M. C. — a
Cleat, N. D. — a
Czapik, Miss A. — a
Eassa, Y. E. — a
Fautrez-Firlefyn, Mrs. N. J. — a
Henke, K. mit Mitarbeitern — a
Hoist Christensen, P. J. — a
Jones, B. M. — b
Jones, B. M. — c
Kloft, W. — a
Kugler, O. E. — a
Kugler, O. E. — b
Monterosso, B. — a
Mulnard, J. — a
Mulnard, J. — b
Pardi, L. — a
Poulson, D. F. — a
Rehm, Miss M. — a
Sandison, Miss E. E. — a
Santler, Miss J. E. — a
Silberbauer, Mrs B. I. — a
Ulrich, H. — b
Vachon, M. — a
Zacwilichowska, Miss K. — a

E Mollusca

Heaysman, Miss J. E. M. — a
Larambergue, M. de — a
Raven, Chr. P. — e

I.6.F.

125

I. 7c.

F Bryozoa, Entoprocta,
Brachiopoda and
Hemichordata
Burdon-Jones, C. — a
Colwin, A. L. and

Colwin, Mrs L. H. — b
Diding, S. — a
Janssens, J. and

Vandebroek, G. — a

G. Echinodermata

Colwin, Mrs L. H. — c
Nyholm, K. G. — b
Ubisch, L. V. — c
H Urochordata
Boeke, J. — c

7 Further development of

Vertebrates

(including complete and pa

rtial

(e.g. early) development)

a General investigations

Partial development

Battle, Miss H. I. — b

I

Peers, Miss D. J. — a

I

Cei, J. M. — a

J

Nieuwkoop, P. D. — a

J

Hamilton, W. J. — c

M

Hertig, A. T. and Rock, J. — a

M

Hertig, A. T. and Rock, J. — b

M

Heuser, C. H. — a

M

Sinclair, J. G. — a

M

Complete development

Bailey, J. R. and

Horn, E. C. — a

Damas, H. F. C. — a

Davies, D. H. — a

Lever, J. — a

Ubisch, L. v. — f

Buno, W. — a

Faber, J. — a

Pisano, A. — b

Rostand, J. — c

Sedra, Shokralla, N. — b

Pasteels, J. J. — b

K

Hamburger, V. — c

L

Hamilton, H. L. — a

L

Chanmugam, P. K. — a

M

Gillman, J. — a

M

Orsini, Mrs M. W. — a

M

Implantation and placentation
Boyd, J. D. and

Hamilton, W. J. — a M

Frick, H. — a M

Hill, J. P. — a M

Hillemann, H. H. — c M

Howorka, E. J. — b M

Howorka, E. J. — c M

Ramsey, Mrs E. M. — a M

Sinclair, J. G. — a M

Sinclair, J. G. — b M

Wislocki, G. B. — a M

b Early development, gastru-

lation, etc.
Battle, Miss H. I. — c I

Peers, Miss D. J. — a I

Steyn, W. J. — b J

Gilbert, Miss C. — a M

Krause, W. — a M

Sinclair, J. G. — a M

Strauss, F. — a M

Early development
Ortolani, Miss G. — a I

Stockard, A. H. — a I

Colombo, G. — a
Rosenbaum, R. M. — b
Harrison, R. J. — a M

Radkowa, M. and

Sembratowa, Z. — a M

Sembrat, K. — d M

Gastrulation and formation of
germ layers

Vandebroek, G. — h LV

Trinkaus, J. P. — a
Bonin, W. — b M

Development of foetal membranes
Bonin, W. — b M

Kropp, B. N. — b M

Mossman, H. W. — b M

c Neurulation, etc.

Elwood, M. A. — a

Wilens, Miss S. — a J

Neurulation (s.s.)

Ubisch, L. v. — f I

Development of neural crest

Algard, F. T. — a J

Niu, M. C. and

Twitty, V. C. — b J

Raven, Chr. P. — d J

I. 7c.

126

I. 7c. 2.

First larval development

Pasteels, J. J. — e J

d Development of part of the

organism
Head

Bleakly, M. C. — a I
Heesch, Miss W. H. T. van — a I

Kamer, J. C. v. d. — b I
Bellairs, A. d'A. — a HV

Crompton, A. W. — a L

Malan, Miss M. E. — a L

Broers, C. J. — a M

King. T. S. — a M

Tondury, G. — b M
Limbs and wings

Steiner, H. — a V

Blechschmidt, E. — b M
Tail

Newth, D. R. — e J

Caspari, E. — b M

e Development of special
organ -systems

Skin

General subjects

Cordier, J. — a

Alexandrowicz, St. — a M

Blechschmidt, E. — a M

Carter, H. B. — a M

Teeth

Belanger, L. F.; Greulich, R. and

Leblond, C. P. — a V

Kindahl, Miss M. E. — a M

Williams, S. C. — b M

Zaaijer, Miss J. J. P. — b M

Hair
Davidson. Miss P. and

Hardy, Miss M. H. — a M

Feathers

Steiner, H. — d L

Sense organs

Kille, R. A. — a I

Pehrson, G. T. — a I

Glands

Glimstedt, G. and Hall, P. — a L

Pigment cells and patterns

Faber, J. — c J

Nervous system
General subjects

Boeke, J. — a V

Hoadley, L. — b

V

Leghissa, S. — c

V

Dreyer, Miss M. V. — a

L

Hoadley. L. — a

L

Boyd, J. D. — b

M

King, T. S. — a

M

Latimer, H. B. — c

M

Patten, B. M. — b

M

Perry, J. H. — b

M

Preto Parvis, Mrs V. — b

M

Central nervous system

Brain

Heimann, H. — a

I

Kuiper, J. W. — b

I

Olsson, R. — a

I

Ariens Kappers, J. — c

J

Ariens Kappers, J. — e

J

Piatt, J. — b

J

Berquist, H. — a

HV

Griinthal, E. — a

HV

Assenmacher, I. and

Benoit, J. — a

L

Grignon, G. — a

L

Krabbe, K. H. —a

L

Blechschmidt, E. — c

M

Bour, J. W. H.; Dankmeijer,

J-

and Luyendijk, W. — a

M

Desclaux, P. — a

M

Feremutsch, K. — a

M

Giroud, A. — a

M

Godina, G. — a

M

Godina, G. — b

M

Humphrey, Miss T. — a

M

Jansen, J. — a

M

Jansen, J. — b

M

Kallen, B. — a

M

Lavelle, A. and

Windle, W. F. — a

M

Luyendijk, W. — b

M

Moll, J. — b

M

Preto Parvis, Mrs V. — c

M

Teysseyre, Miss J. — a

M

Westra, S. — a

M

Windle, W. F. — a

M

Spinal cord

Kollros, J. J. — a

J

Lumb, Miss E. S. — a

L

Watterson, R. L. — a

L

Accessory organs

Paraphysis

Ariens Kappers, J. — b

K

Lanqevoort, H. L. — a

L

I. 7e. 2.

127

I. 7e. 5.

Pariental organ

Pineal body

Kamer, J. C. v. d. — a V

Kamer, J. C. v. d. — b

Kuiper, J. W. — b J

Haije, Miss S. C. A. — a L

Hypophysis

Oort, J. — a L

Bour, J. W. H.; Dankmeijer, J.

and Luyendijk, W. — a M

Ganglia

Cephalic ganglia

Bonin, W. — a I

Raven, Chr. P. — d J

Spinal ganglia

Kollros, J. J. — a J

Nerves

Cephalic nerves

Raven, Chr. P. — d J

Spinal nerves

Kollros, J. J. — a J

Para^ and sympathetic and intramural

nervous system

Boeke, J. — b V

Levi-Montalcini, Miss R. — b HV

Campenhout, E. van — a L

Kramer, T. C. — a L

Filogamo, G. — b M

Meninges

Ariens Kappers, }. — d J

Special sense organs
Nasal organ

Eloff, F. C. — a M

Slotwinski, J. — a M

Eye

Bijtel, Miss J. H. — a J

Newth, D. R. — a J

Rogers, K. T. — b L

Brandt, W. — c M
Ear

Fisk, A. — a I

Bijtel, Miss J. H. — c J
Kamer, J. C. v. d. — c
Glimstedt, G. and Hall, P. — a L

Bast, T. H. — a M

Broers, C. J. — a M

Hillemann, H. H. — b M

Skeleton

General subjects

Belanger, L. F.; Greulich, R. and

Leblond, C. P. — a V

Murray, P. D. F. — a V

Anderson, Miss I. L. — a

J

Martin, Miss A. V. W. — a

HV

Martin, Miss A. V. W. — b

HV

Graumann, W. — a

M

Robertson, G. G. — a

M

Skull

Fisk, A. and

Tribe, Miss M. — b

Johnels, A. G. — a

Pehrson, G. T. — a

Kille, R. A. — a

Eeden, J. A. van — a

Eeden, J. A. van — b

Feldman, M. — a

Pentz, Miss K. — a

Sedra, Shokralla N. — a

Westhuizen, C. M. v, d. — a

Bellairs, A. d'A. — a

HV

Malan, Miss M. E. — a

L

Starck, D. — b

L

Broers, C. J. — a

M

Eloff, F. C. — b

M

Hillemann, H. H. — b

M

Johns, B. A. E. — a

M

Starck. D. — a

M

Truncal skeleton

Buchtowna, Miss A. — a

LV

Orska, Miss J. — a

I

Newth, D. R. — e

Pletzen, R. van — a

Ryke, P. A. J. and

Smit, A. L. — b

Smit, A. L. — a

Peacock, A. — a

M

Limbs and wings

Bretscher, A. — d

Pletzen, R. van — b

Franceschini, M. — a

M

Joints

Moll, T. — c

M

Muscular system

General subjects

Bayley, S. T.; Hanson, E. J. and

Randall, J. T. — b V

Herrmann, H.; Neukom, B. J. and

Schneider, M. J. — d L

Jager, K. W. — a M

Rollhauser, H. — b M

Skeletal muscles
(head, trunk and tail)

Newth, D. R. — e J

I. 7e. 5.

Ryke. P. A. J. — a
Ryke, P. A. J. and
Smit, A. L. — b
Visceral muscles
Eeden, J. A. van — b
Feldman, M. — a
Gyllensten, L. J. W. — a
Muscles of limbs and wings
Bretscher, A. — d

Alimentary tract

General subjects

Faber, J. — d

Mouth- and pharyngeal cavities

Toivonen, S. — d

Intestinal tract

Moog, F. and

Wenger, Mrs E. L. — d

Filogamo, G. — b

Johns, B. A. E. — b

Lewis, F. Th. — b

Proctodaeum

Salivary glands

Orts Llorca, F. — b

Liver

Hjelmman, G. — a

Pancreas

Donaldson, J. C. — a

Humphrey, Miss T. — b

Respiratory organs
General subjects
Gazda, A. — a
Solewski, W. — a
Lungs and larynx
Wallmann, Miss S. — a
Bagiiiski, S. and

coworkers — a
Beau, A. A. and

Dollander, A. — a
Hoist Christensen, P. J. — b
Lewis, F. Th. — b
Walander, A. — a

Heart, vascular system and blood

General subjects

Gazda, A. — a
Raunich, L, — a
Solewski, W. — a
Mustakallio, M. — a
Ode, Miss E. — a
Perry, J. H. — b

128

J

J

J

M

J

L

M
M
M

M
M

M

M

M

M
M
M
M

I

I

I

M

M

M

I. 7c. 10.

Slijper, E. J. — a M

Wei, W. H. v. d. — a M
Heart

Barry, A. — a HV

Patten, B. M. — a HV

Kramer, T. C. — a L

Meyer, R. de — a L
Davies, F. and

Francis, E. T. B. — a M

Latimer, H. B. — e M

Orts Llorca, F. — a M

Windle, W. F. — e M
Vascular system

Millard, Mrs N. A. H. — a
Strawinski, S. — a

Stelt, A. v. d. — a K

Wingstrand, K. G. — a L

Godina, G. — c M

Kropp, B. N. — a M

Ramsey, Mrs E. M. — a M

Vermaak, D. — a M
Blood

Coelomic cavities and endothelia,

lymphatic system and connective

tissue

Coelomic cavities and endothelia

Lymphatic system

Bautzmann, H. — > b V

Snook, T. — a M

Connective tissue

Johnels, A. G. — b

Bax, W. A. — a M

Rollhauser, H. — a M

Urogenital system and sex

determination

General subjects

Kugler, O. E. — a

Steyn, W. J. — d J

Allanson, Mrs M. — a M

Carr, Miss E. B. — a M

Hamilton, W. J. and

Harrison, R. J. — b M

Latimer, H. B. — d M

Mossman, H. W. — b M

Orsini, Mrs M. W. — a M

Raynaud, A. — a M

Kidney and urinary ducts
Fisk, A. and

Tribe, Miss M. — c V

Szarski, K. W. — a LV

I. 7e. 10.

129

I. 8c.

Holmgren, N. F. — a I
Cambar, R. — b

Fraser, Miss E. A. — b M

Gyllensten, L. J. W. — a M

Gonads, genital tracts and accessory

glands

Vannini, E. — b V

Chieffi. G. — a I

Bounoure, L. — a

Steyn. W. J. — a J

Bruins, G. and

Krediet, G. — a HV

Assenmacher, I. and

Benoit, J. — a L

Campenhout, E. van — a L

Austoker, Mrs J. — a M

Corner, G. W. — a M

Dankmeijer, J. and

Dekker, Miss A. — b M

Hamilton, W. J. and

Harrison, R. J. — b M

Harrison, R. J. — b M

Tondury, G. — c M

Sex determination
Hampe, A.; Ostertag, Miss Y.;

Pfleger, Miss D.; Salzgeber,

Miss B.; Strudel, G.; Wolff,

Mrs Em. and Wolff, Et. C.

— b L
Hay, Miss D. — a M

Endocrine glands

General subjects

Latimer, H. B. — c M

Hypophysis

Assenmacher, I. and

Benoit, J. — a L

Grignon, G. — a L

Oort, J. — a L

Wingstrand, K. G. — a L

Thymus
Thyroid gland

Leblond, C. P. — a V

Gonads
Adrenals
Preto Parvis, Mrs V. — a M

Pancreas

Mialhe, P. — a

HV

f Histo- and cytogenesis

Bayley, S. T.; Hanson, E. J. and

Randall, J. T. — b V
Davies, H. G. and

Walker. P. M. B. — a HV

Martin, Miss A. V. W. — a HV

Martin, Miss A. V. W. — b HV

Filogamo, G. — b M

Preto Parvis, Mrs V. — a M

Preto Parvis, Mrs V. — b M

8 Growth and differentiation
a Growth

Ubisch, L. v. — b EV + V

Cleat, N. D. — a D

Risler, H. — a D

Ubisch, L. v. — c G

Balinsky, B. I. — a J
Lehmann, F. E. und

Mitarbeitern — a J

Wallmann, Miss S. — a J

Balinsky, B. I. — a M

Blechschmidt, E. — a M

Franceschini, M. — a M

Latimer, H. B. — a M

Latimer, H. B. — b M

Latimer, H. B. — c M

Latimer, H. B. — d M

Latimer, H. B. — e M

b Growth and differentiation

Wallace, D. R. J. — a D
Moog, F. and

Wenger, Mrs E. L. — d L

Blechschmidt, E. — b M

Blechschmidt, E. — c M
Boyd, J..D. and

Hamilton, W. J. — a M
Hamilton, W. J. and

Harrison, R. J. — b M

Rollhauser, H. — a M

c Differentiation

Godina, G. — a M

130

11. EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY

SUBDIVISION

1 Theoretical problems

2 Methods and technics

3 General subjects (asexual development, etc.)

4 Initial development

a Primordial germ cells

b Ovogenesis and spermatogenesis

c Maturation

d Ovulation and oviposition

e Activation and fertilization

f Parthenogenesis

g General subjects

5 Cleavage and mitosis
a Cleavage

b Mitosis

6 Further development of Invertebrates

a General subjects (complete development)
b Topogenesis

c Determination of primitive development
d Development of part of the organism (head)
e Development of special organ systems
(Cf. general subdivision p. 120 — 122)
f Histo- and cytogenesis

7 Further development of Vertebrates
a General investigations

1 General subjects

2 Complete development

3 Partial development

4 Implantation and placentation
b Topogenesis

1 Early development

2 Gastrulation and formation of germ layers

3 Neurulation

4 Formation of neural crest

5 First larval development

c Induction, determination, etc.

1 Induction

2 Determination

3 Regulation and organisation

d Development of parts of the organism

1 Head

2 Limb and wing

3 Tail

4 Branchial region

e Development of special organ systems
(Cf. general subdivision p. 120 — 122)
f Histo- and cytogenesis
8 Growth and differentiation
a Growth

II. 1

131

II. 5b.

a/b Growth and differentiation
b Differentiation

CHARACTER OF INVESTIGATION

(4) Physical treatment

(5) Chemical treatment

(6) Influence of hormones and vitamines

1 Theoretical problems
Ubisch, L. v. — b EV + V
Ubisch, L. v. — c G
Yamada, T. — c V

2 Methods and technics
Wenger, B. S. — d EV + V
Lindahl, P. E. — a G
Beatty, R. A. and

Fischberg, M. — b M

Beatty, R. A. — c M

3 General subjects (asexual
development, etc.)

Wetmore, R. H. — a Plants

Wetmore, R. H. — b Plants

Brien, P. et

Herlant, Mme H. — a EV

Herlant-Meewis, Mme H. — f A
Brien, P. — c B

Herlant-Meewis, Mme H. — a C
Vannini, E. — d C

Shulow, A. — a D

Dollander, A. — a
Tseng, Miss M. P. — a J

Deth, J. H. M. G. van — b L

4 Initial development
a Primordial germ cells

Vannini, E. — d C

Mangold, O. and
Stark, O. — a
Sembrat, K. — b
Steyn, W. J. — c
Wang, Y. T. — a
Wang. Y. T. — b
b Ovogenesis and spermato-
genesis
Lehmann, F. E. — d EV

Vannini, E. — d C

Bucher, N. — a (4/5)D

Godlewski, H. G. — a (4)J

Green, S. H. — a M

Mandl, Miss A. M, — a

Zuckerman, S. — a

c Maturation

d Ovulation and oviposition

e Activation and fertilization

Pisano, A. — d

Austin, C. R. and

Braden, A. W. H. — b
f Parthenogenesis
Monterosso, B. — a
Harvey, Mrs E. B. — a
Fankhauser, G. — a
Fischberg, M. — a
Rostand, J. — a
Marjanen, P. — a
Pesonen, S. — a
Pesonen, S. — c
g General subjects
Brien, P. et

Herlant, Mme H. — a
Brien, P. — b
Brien, P. — c
Leghissa, S. — a
Vandebroek, G. — c
Piotrowska, J. — a
Vintemberger, P. — a
McCafferty, R. E. — a

5 Cleavage and mitosis
a Cleavage
Costello, D. P. and

Henley, Miss C. — a
Robertson, Mrs F. M. — a
Motomura, I. — b
Colombo, G. — b
Fankhauser, G. — a

b Mitosis
Luther, W. — b
Battle, Miss H. I. — a
Costello, D. P. and

Henley, Miss C. — b
Hintzsche, E. — b

M
M

M

D

(4)G

(4)J

J

(4)J

(5)M

(5)M

(5)M

EV

B

B

H

H

(4)J

J

[6)M

(4)C

E

G

(6)J

J

(4)V
I

(5)J
HV

II. 6a. 132

6 Further development of
Invertebrates

a General subjects (complete
development)

Brien, P. et

Herlant, Mme H. — a EV

Ubisch, L. v. — b EV

Brien, P. — b B

Goto, T. — a (5)D

Monterosso, B. — a D

Seidel, F. — b D

Vachon, M. — a D
Colwin, A. L. and

Colwin, Mrs L. H. — b F

Ubisch, L. v. — c G

b Topogenesis

Sembrat, K. — a B

Gloor, H. — a (5)D

Hadorn, E. — c D

Holm, K. A. — a D

Poulson, D. F. — b D

Backstrom, S. A. A. — a (5)G

Dan, K. — a G

Lindahl, P. E. — a G

Moore, A. R. — b G

Leghissa, S. — a H

Vandebroek, G. — a H

Vandebroek, G. — b H

Vandebroek, G. — f (5)H

c Determination of primitive
development

Haget, A. — a D

Holm, K. A. — a D

Poulson, D. F. — b D

Smreczyriski, S. — a D

Urbani, E. — d D

Brunnekreeft, F. — a (4)E
Egmond, Miss M. T. C. van

and Verheyen, F. J. — a (4)E

Raven, Chr. P. — a E

Raven, Chr. P. — c E

Vandebroek, G. — m F

Horstadius, S. — a G

Leghissa, S. — a H

Urbani, E. — c H

Vandebroek, G. — d (4)H

Vandebroek, G. — e H

II. 7b.

(5)E

d Development of part of
organism (head)

Raven, Chr. P. — e

e Development of special organ
systems

Skin

Vandebroek, G. — m F

Nervous system

Boeke, J. — c H

Skeleton

Moore, A. R. — a G

Urogenital system

Bucher, N. — a (4/5) D

f Histo- and cytogenesis

7 Further development of
Vertebrates

a General investigations

General subjects

Goodhart, C. B. — b }

Krauss, M. — b J

Waddington, C. H. — c J

Complete development
Sembrat, K. — c (6)V

Ubisch, L. v. — b V

Goto, T. — a (5)J

Holtfreter, J. K. F. — a (5) J

Perri, T. — d (4)J

Pisano, A. — a J

Urbani-Mistruzzi, Mrs L. — b (4) J
Bellairs, A. d'A. and

Bellairs, Mrs M. R. — b
Orsini, Mrs M. W. — a
Seidel, F. — a

Partial development
Holmdahl, D. E. — a
Fautrez, J. C. — b
Implantation and Placentation
Howorka, E. J. — a

b Topogenesis

Leone, V. — a
Waddington, C. H. — b
Battle, Miss H. I. — a
Rogers, K. T. — a
Chuang, H. H. — a
Lehmann, F. E. und
Nieuwkoop, P. D. — b

K

M
M

V

:5)j

M

(5)V

V

(5)1

I

J

(5)J

II. 7b.

133

II. 7c

Lombard, G. L. — a

(5)J

Lombard, G. L. — b

(5)J

Mookerjee, S. — c

J

Okada, T. — b

J

Townes, Ph. L. — a

J

Buno, W. and

Franchi, C. M. — c

HV

Abercrombie. M. and

Bellairs, Mrs M. R. — a

L

Hunt, E. L. — a

(5)L

Lutz, H. — a

L

Wolff, Et. C. — a

L

Early development

Dollander, A. — a

J

Pasquini, P. — a

(5)J

Pesonen, S. — b

(5)J

Adamstone, F. B. — a

L

Reyrolle, Miss J. — a

L

Nicholas, J. S. — a

M

Gastrulation and formation

of

germ layers

Devillers, Ch. — a

Trinkaus, J. P. — a

Nieuwkoop, P. D. — e

Neurulation

Egmond, Miss M. T. C. van

and Nieuwkoop, P. D. —

b J

Ferreira, W. A. — a

Raunich, L. — c

Wilens, Miss S. — a

Woellwarth, C. v. — a

Formation of neural crest

Newth, D. R. — c

Algard, F. T. — a

Bodenstein, D. H. F. A. —

a J

Niu, M. C. and

Twitty, V. C — b

Niu, M. C. and

Twitty, V. C. — f

Stevens, L. C. — a

Saunders, J. W. — a

L

First larval development

c Induction, determination,

etc.

Induction

Woerdeman, M. W. — c

V

Balinsky, B. I. — b

J

Balinsky, B. I. — c

J

Bodenstein, D. H. F. A. —

J

Boterenbrood, Miss E.;
Kremer, Miss A. and
Nieuwkoop, P. D. — a

Deuchar, Miss E. M. — a

Englander, H. — a

Gallera, J. — a

Gallera, J. — c

Gallera, J. — d

Goodhart, C. B. — a

Hama, T. — a

Harrison, R. G. — a

Harrison, R. G. — • b

Horst-Rollhauser, Mrs J. ter — a

Horst-Rollhauser, Mrs J. ter — b

Nicholas, J. S. — d

Reyer. R. W. — b

Rhodes, S. — a

f Rotmann, E. — a

Schenk, R. — b

Schreiber, B. — a

Spofford, W. R. — b

Spofford, W. R. — c

Tondury, G. — f

Trampusch, H. A. L. — a

Trampusch, H. A. L. — b

Waddington, C. H, — a

Yamada, T. — d

Yntema, C. L. — a

Woerdeman, M. W. — b

Buno, W. — b

McKeehan, M.; Petzold, R. and
Weiss, P. A. — a

Tondury, G. — g

Determination
Stefanelli, A. — a
Bone, E. and

Vandebroek, G. — a
Eyal-Giladi, Mrs H. — a
Horstadius, S. — b
Mangold, O. and

Waechter, Miss H. — b
Moore, J. A. — a
Moore, J. A. — b
Pasteels, J. J. — a
Pisano, A. — c
Raunich, L. — c
Spofford, W. R. — a
Wang, Y. T. — b
Woellwarth, C. v. — a
Abercrombie, M. — b

(4):

T

J

HV

L

L

L

V

(5);

11.7c. 134

Regulation and organization
Oppenheimer, Miss J. M. — a
Benoit, J. A. A. — a
Benoit, J. A. A. — b
Cotronei, G.; Perri, T. and

Urbani-Mistruzzi, Mrs L. — a
Dalcq, A. M. with

coworkers — b
Devillers, Ch. — d
Lombard, G. L. — a (5)

Lombard, G. L. — b (5)

Motomura, I. — a
Nieuwkoop. P. D. and

Toivonen, S. — c
Planque, B. de — a
Tseng, Miss M. P. — c
Yamada, T. — b
Abercrombie, M. and

Bellairs, Mrs M. R. — a L

Amprino, R. M. — c L

Lutz, H. — b L

Boterenbrood, Miss E.;

Kremer, Miss A. and

Nieuwkoop, P. D. — a
Deuchar, Miss E. M. — a
Rose, S. M. — b (5)J

d Development of parts of the

organism
Head

Horstadius, S. — a
Li, Miss S. C. — a J

Huber, W. and Wolff, Et. — a L
Limb and wing
Harrison, R. G. — a
Ichikawa, M. — b J

Moulton, J. M. and
Romer, A. S. — a
O'Brien, J. P. — d J

Perri, T. — a

Tschumi, P. — a (5)J

Bretscher, A. — b (5)L

Bretscher, A. — c L

Cairns, J. M. — c L

Saunders, J. W. — c L

Schue, Miss M. — b (4)L

Vigliani, F. — a M

Tail

Bijtel, Miss J. H. — a
Farinella-Ferruzza, Mrs N. — a
Passalacqua, Miss A. — a J

II. 7e. 2.
J

Sembratowa, Z. — a
Sembratowa, Z. — b
Spofford, W. R. — b
Craig, Miss M. M. and

Zwilling, E. — a
Branchial region
Balinsky, B. I. — b

e Development of special organ
systems

Skin

General subjects

Niu, M. C. and

Twitty, V. C. — e
Pisano, A. — c
Davidson, Miss P. and

Hardy, Miss M. H. — b
Exo-skekton
Devillers, Ch. — c
Newth, D. R. — b

Teeth

Deth, J. H. M. G. van — d

Hair

Chase, H. B. — b

Davidson, Miss P. and

Hardy, Miss M. H. — b
Rawles, Miss E. — b
Feathers

Cairns, J. M. — a
Cairns, J. M. — b
Davidson, Miss P. — c
Rawles, Miss E. — a
Steiner, H. — c
Pigment cells and patterns
Dalton, H. C. — a
Lehman, H. E. — a
Niu, M. C. and

Twitty, V. C. — a
Niu, M. C. and

Twitty, V. C. — d
Rawles, Miss E. — a
Saunders, J. W. — a
Trinkaus, J. P. — b
Willier, B. H. — b
Chase, H. B. — b
Rawles, Miss E. — b

Nervous system
General subjects
Boeke, J. — a
Hoadley, L. — b

J
J

M

I
J

M

M

M

M

L
L
L
L
L

J

J
L
L
L
L
M
M

V

V

II. 7c. 2.

135

II. 7e. 6.

Stefanelli. A. — a V

Baffoni, G. — a

Ferreira, W. A. — a

Perry, J. H. — a

Spofford, W. R. — d J

Hamburger, V. and

Levi-Montalcini, R. — a L

Hammond, W. S. — b L

Hoadley, L. — a L

Central nervous system
Oppenheim, Miss J. M. — b I

Egmond, Miss M. T. C. van

and Nieuwkoop, P. D. — b
Gyllensten, L. J. W. — c J

Lehmann, F. E. und

Nieuwkoop, P. D. — b (5)J

Hamburger, V. and

Levi-Montalcini, Miss R. — b L
Edgar, G. W. F. — a M

Brain

Pflugfelder, O. — c V

Eakin, R. M.; Eaton, Miss N.;

Oldenborg, Miss E. and

Thurmond, W. — a
Woellwarth, C. v. — a J

Filogamo, G. — a L

Harmark, W. — a L

Spinal cord

Piatt, J. — a J

Hogue, Miss M. J. and

Williams, S. C. — a HV

Watterson, R. L. — b L

Watterson, R. L. — c L

Watterson, R. L. — e L

Wenger, B. S. — a L

Wenger, Mrs E. L. — a L

Accessory organs
Ganglia

Cephalic ganglia

Fautrez, J. C. — a J

Spinal ganglia

Guardabassi, A. and

Sacerdote, Miss M. — a J

Nerves

Cephalic nerves
Guardabassi, A. — b
Guardabassi, A. — c

Para' and sympathetic and intramural
nervous system
Hammond, W. S. and

Yntema, C. L. — a L

Special sense organs

General subjects

Trampusch, H. A. L. — b

Nasal organ

Eye and lens

Balinsky, B. I. — c

Guardabassi, A. — b

Guardabassi, A. — c

Reyer, R. W. — b

Stone, L. S. — a

Amprino, R. M. — b L

McKeehan, M.; Petzold, R. and

Weiss, P. A. — a L

Ear

Bijtel, Miss J. H. — c

Fautrez, J. C. — a J

Guardabassi, A. and

Sacerdote, Miss M. — a
Harrison, R. G. — b
Newth, D. R. — b
Yntema, C. L. — a J

Skeleton

General subjects

Schreiber, B. — a

Hale, L. J. — a L

Embryonic temporary skeleton

Mookerjee, S. — a J

Tondury, G. — g L

Skull

Claes, M. T. and

Vandebroek, G. — a (5)1

Devillers, Ch. — c
Vandebroek, G. — j
Li, Miss S. C. — a
Gubbins, J. F. — a M

Truncal skeleton

Masy, S. — a L

Muscular system
Moulton, J. M. and

Romer, A. S. — a I

Amprino, R. M. — a L

Nicholas, J. S. — b M

Alimentary tract

General subjects

Okada, T. — a

Tseng, Miss M. P. — b

Tseng, Miss M. P. — c J

Mouth- and pharyngeal cavities

Bellairs, Mrs M. R. — c L

II. 7e. 6.

136

II. 7f.

Hamilton, H. L. and

Schrier, Miss J. — b
Intestinal tract

Tseng, Miss M. P. — a
Respiratory organs
Lungs and larynx
Wallmann, Miss S. — a
Air-bladder
Winowska, Mrs J. — a

Heart, vascular system and blood
General subjects
Ferreira, W. A. and

Gonzalez Marino, R. E. — b
Stephan, Fr. — a
Heart

Gallera, J. — e
Vascular system
Sauser, G. — a
Blood
Rhines, R. and

Williams, R. G. — a

Coelomic cavities and endothelia,

lymphatic system and connective

tissue

Coelomic cavities and endothelia

Kemp, N. E. — b

Lymphatic system

Gyllensten, L. J. W. — b

Connective tissue

Bodenstein, D. H. F. A. — a

Urogenital system and sex
determination
General subjects
Steyn, W. J. — c
Frilley, M. and

Raynaud, * A. — a
Kerkhof, Miss A. M. — i
Kidney and urinary ducts
Fraser, Miss E. A. — a
Bijtel, Miss J. H. — b
Cambar, R. — a
Haffen, Miss K. and

Wolff, Et. — a
Washington, Miss D. — ,
Gonads and genital tracts
Fankhauser, G. — b
Mangold, O. and Stark, O.
Sabbadin, A. — a
Vannini, E. — e

M

M

M

(4/6)M

(6)M

I

Reinbold, R. — a L

L Stoll, R. C. — b L

Gaillard, P. J. — a M

J Hummel, Miss K. P. and

Little, C. C. — a M

Orsini, Mrs M. W. — a M

J Sex determination

Vannini, E. — c V

I D'Ancona, U. — a

Yamamoto, T. — b
Bruner, Miss J. A. — b (6)

Chang, C. Y. — a (6)

Fischberg, M. — a
> Sabbadin, A. — a

L Hampe, A.; Ostertag, Miss Y.;

Pfleger, Miss D.; Salzgeber,
L Miss B.; Strudel, G.; Wolff,

Mrs Em. and Wolff, Et. C.

— b L
Ostertag, Miss Y. and

Wolff, Et. — a (6)L

Pfleger, Miss D.

andWolff, Et. — a (6)L

Reinbold, R. — a L

Strudel, G.; Wolff, Mme Em.

and Wolff, Et. — b (6)L

Burns, R. K. — a (6)M

Endocrine glands
General subjects

Blount, R. F. — c M

J Hypophysis

Blount, R. F. — a J

Eakin, R. M.; Eaton, Miss N.;
Oldenborg, Miss E. and
Thurmond, W. — a J

Eakin, R. M. and

Harris, M. — b J

Thymus

Hammond, W. S. — c L

Thyroid gland

Gaillard, P. J. — b L

I Adrenals

> Dawson, A. B. — a L

Kurkiewicz, T. — a M

L f Histo- and cytogenesis

Bayley, S. T.; Hanson, E. J.
J and Randall, J. T. — b V

J Stefanelli, A. — a V

Lehman, H. E. — b
J Muchmore, W. B. — a J

II. 71.

Niu, M. C. and

Twitty, V. C. — a, and c
Niu, M. C. and

Twitty. V. C. — d and e
Raunich. L. — d
Schenk, R. — a
Tondury, G. — e
Wszelaczyriska, Miss M. —
Hogue, Miss M. J. and

Williams, S. C. — a
Levi, G. L. — a
Levi, G. L. — b
Martin, Miss A. V. W. — a
Abercrombie, M. — b
Abercrombie. M. — c
Garber, Mrs B. and

Weiss, P. A. — a
Rudnick. Miss D. — a
Edgar, G. W. F. — a
Howorka, E. J. — a

137

(6)

HV
HV
HV
HV
L
L

L

L

M

M

8 Growth and differentiation

a Growth

Brien, P. — b B

Brien, P. — c
Bodenstein, D. H. F. A. — b
Luther, W. — b
Goodhart, C. B. — c
Wallmann, Miss S. — a
Levi, G. L. — a
Clark, E. R. and

Williams, R. G. — a
Vigliani, F. — a

II. 8b.

B
(6)D
(4)V

J

J

HV

M

M

a/b Growth and differentiation

Bonner, J. T. — b Plants

-c (6)J

-d (6)J

J

Fankhauser, G.
Fankhauser, G.
Tondury, G. —

b Differentiation

Weisz, P. B. — a Protozoa

Cotronei, G.; Perri, T. and

Urbani-Mistruzzi, Mrs L. —
Okada, T. — a
Waddington, C. H. — c
Andres, G. and

Weiss, P. A. — a
Hale, L. J. — a

III. DEVELOPMENTAL PHYSIOLOGY
SUBDIVISION

1 Theoretical problems

2 Methods and technics

3 General subjects (asexual development, etc.)

4 Initial development

a Primordial germ cells

b Gameto-, ovo- and spermatogenesis

c Maturation

d Ovulation and oviposition

e Activation and fertilization

f Parthenogenesis

g General subjects

5 Cleavage and mitosis
a Cleavage

b Mitosis

6 Further development of Invertebrates

a General subjects, (complete development)
b Primitive development (including early development)
c Induction and determination
d Development of part of the organism
e Development of special organ systems
(Cf. general subdivision p. 120 — 122)

III. 1.

138 HI- 3.

f Histo- and cytochemistry
g Serological studies
7 Further development of Vertebrates
a General investigations

1 General subjects

2 Complete development

3 Later development

4 Implantation and placentation
b Primitive development

1 Early development

2 Gastrulation

2/3 Gastrulation and neurulation

3 Neurulation

4 Development of neural crest

c Induction and determination, etc.

1 Induction

2 Determination

3 Regulation and organisation

d Development of parts of the organism

1 Head

2 Limb

e Development of special organ systems
(Cf. general subdivision p. 120 — 122)
f Histo- and cytochemistry
g Immunological studies

8 Growth and differentiation
a Growth

a/b Growth and differentiation
b Differentiation

9 Nutrition of embryo

CHARACTER OF INVESTIGATION

(1) Metabolism and respiration

(2) Cytochemistry

(3) Physical properties

(4) Physical treatment

(5) Chemical treatment

(6) Influence of hormones and vitamines

1 Theoretical problems 'tSlu.-a
Yamada, T . — c V

Woerdeman, M. W. — b HV 3 General subjects

2 Methods and technics (asexual development etc.)
Johnson, M. W. and Bonner, J. T. — a Plants

Manhoff, L. J. — b Wetmore, R. H — a P ants

Ubisch L. v. — f I Wetmore, R. H. — b Plants

Waechter, Miss H. — b J Sauser, G. — b EV + V

Andres, G. and Herlant— Meewis, Mme H. — b C

Weiss, P. A. — a L Goszwald, K. — b U

III. 3.

139

III. 5a.

Harvey, Mrs E. B. — b

G

Tracy, H. C. — b

I

Esposito Seu Margherita,

Miss M. — -a

J

Nicoletti, B. — a

J

4 Initial development

a Primordial germ,' cells

Katakura, Y. — a

D

Vitagliano, G. — a

D

b Gameto-, ovo- and spermato-

genesis

Omodeo, P. — b

(2)C

Penners, A. — b

(2)C

Mulnard, J. — a

D

Urbani, E. — e EV + V

Lison, L. and

Pasteels, J. J. — a

(2)V

Roetheli, A. — a

I

Guillon, G. and

Moricard, R. — a

I

c Maturation

Scott, A. C. — a

(5)C

Montalenti, G. — a

D

Vitagliano, G. — • a

D

Atlas, M. — a

J

Chih, C. S. and

Moricard, R. — a

(6)M

Moricard, R. — b

(6)M

d Ovulation and oviposition

Atlas, M. — a

J

Smith, Miss F. W. — a

M

e Activation and fertilization

Metz, C. B. — a (2)P

rotozoa

Metz, C. B. — c

(2)EV

Goszwald, K. — d

D

Colwin, A. L. and

Colwin, Mrs L. H. — a

F

Dan, Mrs J. C. — a

G

Endo, Y. — a

G

Fleming, W. R. — a

(2)G

Holter, H. — b

(1)G

Immers, J. — a

(2)G

Immers, J. — b

(DG

Ishikawa, M. and

Sugiyama, M. — a

G

Lillie, R. S. — a

G

Lindahl, P. E. — b G

Lindvall, S. — a (2)G

Metz, C. B. — b (2)G

Monroy, A. and Monroy-Oddo,

Mrs A. — a (2)G

Monroy, A. and

Runnstrom, J. A. M. — b (2
Motomura, I. — c
Nakano, E. — c (5

Runnstrom, J. A. M. — a
Tyler, A. — a
Vasseur, E. J. E. — a
Whiteley, A. H. — a
Wicklund, Miss E. — a
Yamamoto, T. — a
Austin, C. R. and

Braden, A. W. H. — c
Chang, M. C. — a
Moricard, R. — c
Mossman, H. W. and

Strauss, F. — • c

G

G

G

G

G

2)G

2)G

G

I

M
M
M

M

f Parthenogenesis

Monterosso, B. — a
Ishikawa, M. and

Sugiyama, M. — a
Shaver, J. R. — a
Shaver, J. R. — e
Austin, C. R. and

Braden, A. W. H. — c

g General subjects

Anders, G. — a
Stalfoort, Miss T. G. J. — i
Gustafson, T. — b
Lindahl, P. E. — c
Lindahl, P. E. — d
Lindberg, N. O. H. — a
Vakaet, L. C. — a
Briggs, R. W. — b
Marchlewski, J. H, — a
Brondsted, H. V. — b

5 Cleavage and mitosis

a Cleavage

Zeuthen, E. — a EV + V

Penners, A. — d (4/5 )D

Dan, K. — b G

Kuno, M. — a G

Scott, A. C. — c (4)G

D

G

I
(2)J

M

D
(5)E

(2)G

G

(5)G

(1)G

I

(5)J

L

M

III. 5a. HO

Gothic Miss S. and

Moricard, R. — b
Shaver, J. R. — a J

Austin, C. R. and

Braden, A. W. H. — c M

Br0ndsted. H. V. — b M

Chang, M. C. — a M

b Mitosis

Zeuthen, E. — a EV + V

O'Connor, R. J. — a (1)V

Lison, L. and

Pastcels, J. J. — a (2)V

Overton, Miss J. and

Weiss, P. A. — a J

6 Further development of

Invertebrates
a General subjects, complete

development

Cigada, Miss M. — a EV

Holtfreter, J. K. F. — b EV

Ranzi, S. — a (2)EV

Tosi, Miss L. —a EV

Trampusch, H. A. L. — c EV

Vandebroek, G.

and coworkers — n
Annez, Ch. — a
Bodenstein, D. H. F. A. — c
Fautrez-Firlefyn Mrs N. J. —
Fitzgerald, L. R. — a
Hama, T. — b
Henke, K. mit Mitarbeitern —
Monterosso, B. — a
Mori, H. — a
Mulnard, J. — a
Seidel, F. — b
Tuft, P. H. — a
Ulrich, H. — b
Yao, T. — a
Borei, H. — a
Harvey, Mrs E. B. — b
Monne, L. — a
Perlmann, H. P. — a
Runnstrom, J. A. M. — a
Colwin, A. L. — c

(2)EV
C

(1)D
a D

(1)D

(2)D

a D

D

(5)D
D
D
D
D

(2)D

(1)G
G
G

(2)G
G

(5)H

(1

b Primitive development (in-
cluding early development)

Scott, A. C. — b (5)EV

Tyler, A. — b EV

Krainska, Mrs M. K. — a (2)D

III.6L

Nakane, T. — a (2)D

De Nicola, M. — b D

Ulrich, H. — a D

Arkel, G. A. v.; Broek, Miss
E. v. d.; Duyker-de Beer, Mrs
A. S.; Heesch, Miss W. H. T.
v.; Kok, J. C. N.; Kuiper,
J. W.; Loo, Miss R. P. v.;
Nijenhuis, E. D.; Smit, Miss
J. E. H. and Utrecht, W. L. v..

— a (5)E
Clement, A. C. — a (5)E

Raven, Chr. P. — b (5)E

Spronk, N. — a (5)E

Stalfoort, Miss T. G. J. — a ( 5 ) E
Veen, H. G. v. d. — a (5)E

Gustafson, T. — a (5)G

Hultin, J. M. T. — a (1)G

Jaffe, L. F. — a (2)G

De Nicola, M. — a G

Yeas, M. — a (1)G

c Induction and determination

Citterio, P. — a EV

Ulrich, H. — a D

Holter, H. — a G

Horstadius, S. — a G

Lindahl, P. E. — c G

Lindahl, P. E. — d (5)G

e Development of special organ
systems

Skin

Rosin, S. — a D

Sense organs

Minganti, A. — c H

Alimentary tract

Lesher, S. — a (2)D

Genital system

Kugler, O. E. — a (2)D

Kugler, O. E. — b (2)D

Endocrine glands
Chow, P. S.; Chu, J.; Kiang,
H. M. andTsai, Miss N. — a D

f Histo- and cytochemistry

Tosi, Miss L. — a EV

Urbani, E. — f EV
Vandebroek, G.

and coworkers — n EV

Krainska, Mrs M. K. — a D

Nakane, T. — a D

E
(5)G

G

G
(DG

H

(2)G

III. 6f.

Lee, H. J. v. d. — a
Gustafson, T. — a
Monne, L. — a
De Nicola, M. — b
Swedmark, B. G. — a
Minganti, A. — c

g Serological studies

Perlmann, H. P. — a

7 Further development of
Vertebrates

a General investigations

General subjects

Batty, Th.; Tracy, C. H.

and Winblad, J. — a
Baxter, E. W. — a
Datkowna, H. — a (4)1

Briggs, R. W.; Green, E. U.

and King, T. — a (2)J

Faber, J. — b

Gregg, J. R. — a (1)J

Mookerjee, S. — b (5) J

Eavrs. J. T. — b (6)M

Reynolds, S. R. M. — a M

Sinclair, J. G. — c (5)M

Complete development

Cigada, Miss M. — a (1)V

Goodhart, C. B. — d V

Holtfreter, J. K. F. — b (2)V
Lison, L. and

Pasteels, J. J. — a (2)V

Ranzi, S. — a (2)V

Stefanelli, A. — d (1)V

Tosi, Miss L. — a (1)V

Konopacka, Mrs B. — a (2)1

Stefanelli, A. — e (2)1
Tracy, H. C. — c

Urbani, E. — a (1)1

Winblad, J. — b (5)1

Battaglia, B. — a J

Berg, W. E.; Eakin, R. M. and

Kutsky, P. B. — a (1)J

Chuang, H. H. — b (5)J
Gennaro Jr, J. F. and

Ridley Miss E. J. — a

Hall, T. S. — a (5)}

Krugelis, Miss E. J. — a (3)J

Kutsky, P. B. — a (1)J
Lcivtrup, S. — a

III. 7b.

Moog, F. and

Wenger, Mrs E. L. — c (1)J
Moore, Mrs B. C. — a

Thomason, Miss D. — b (1)J

Urbani, E. — b (1)1
Urbani-Mistruzzi, Mrs L. — c (2)J

Zeuthen, E. — b (2) J
Alvarez Gutierrez, Miss J.;

Buno, W. and Gonzalez

Marino, R. E. — d (1)HV

Fitzgerald, L. R. — b (1)HV

Henke, K. mit Mitarbeitern — a L

Zwilling, E. — b (1)L

Csapo, A. — a M
Hammond, W. S. and

Yntema, C. L. — d (5)M

Hillemann, H. H. — a (2)M

Seidel, F. — a M

Larer development

Moog, F. — a (1)V
Castigli-Pitotti, Mrs M. — c (1)1

Karczmar, A. G. — c (5) J

Hooker, D. — a M

Pesonen, S. — c (5)M

Snyder, F. F. — a (1)M

Implantation and placentation
Dankmeijer, J. and

Heyn, C. B. — a M

Flexner, L. B. — b M

Mather, W. B. — a M

Sinclair, J. C. — c M

b Primitive development

Leone, V. — a (5)V

Hori, R. — a (1)1

Nakano, E. — b (5)1

Bautzmann, H. — a

Krugelis, Miss E. J. — b (3)J

Lallier, R. A. — a (5) J

Mookerjee, S. — c

Reverberi, G. — a

Shaver, J. R. — • c

Steinert, M. — a (1)1

Townes, Ph. L. — a

Shaver, J. R. — d L

Bozic, B. — a M

Early development

Nakano, E. — a (1)1

Brachet, J. L. A. and

Pasteels, J. J. — d (2)J

III. 7b.

142

III. 7c. 1.

Ikushima, N. — a (3)

Ikushima, N. — b (1)

Masuda, H. — a (2)

Osawa, S. — a (2)
Osawa, S. and

Yamada, T. — b (2)

Rosenbaum, R. M. — a (2)

Rostand, J. — d (4)

Takata, K. — a (2)
Takata, K. and Yamada, T. — b

Remotti, E. — a L

Alden, R. H. — a M
Austin, C. R. and

Braden, A. W. H. — c M
Dalcq, A. M. with

coworkers — a M

Gastrulation

Castigli Pitotti, Mrs M, — a I

Berge, J. H. ten and

Bezem, J. J. — a (5)J

Fitzgerald, L. R. — b (1)HV

Mossman, H. W. — b M

Gastrulation and neurulation
Brachet, J. L. A. — a J

Brachet, J. L. A. — b (5)J

Steinert, M. and

Thomas, R. — b (5)J

Neurulation

Newth, D. R. — d (3)J

Development of neural crest
Niu, M. C. and

Twitty, V. C. — f J

c Induction and determination, etc.

Lallier, R. A. — b J

Liao, Y. K. — a J
Moog, F. and

Wenger, Mrs E. L. — b J
Reverberi, G. — a

Thomason, Miss D. — a J

Induction

Hama, T. —a (2)J

Kuusi, Miss T. — a

Nicholas, J. S. — d J

Niu, M. C. and

Twitty, V. C. — e
•}■ Rotmann, E. — a
Toivonen, S. — a

(4)J
J
J

(2)M

Trampusch, H. A. L. — a
Yamada, T. — a
Yamada, T. — d
Deth. J. H. M. G. van — c
McKeehan, M., Petzold, R.

and Weiss, P. A. — a
Gothie, Miss S. and

Moricard, R. — a

Determination

Citterio, P. — a V

Regulation and organisation
Yamada, T. — b

d Development of parts of the
organism

Head

Blumer, Miss C. and

Weiss, P. A. — a J

Rossetti, F. and
P. A. Weiss — a J

Limb

O'Brien, J. P. — d J

e Development of special organ
systems

Skin

General subjects

Remotti, E. — b V

Eayrs, J. T. — a M

Teeth

Zaaijer, Miss J. J. P. — a M

Hair

Hardy, Miss M. H. — c M

Feathers

Saunders, J. W. — b

Willier, B. H. — a

Mammae

Frilley, M. and

Raynaud, A. — b
Pigment cells and patterns
Mori, Y. — a
Nagatsu, R. — a
Baker, Mrs A. S. — c
King, R. — a
Lehman, H. E. — a
Niu, M. C. and

Twitty, V. C. — a, c and f
Markert, C. L. — a

L
(2)L

M

(5'

J
(5)L

III. 7e. i.

143

III. 7e. 8

Saunders, J. W. — b
Saunders, J. W. — d
Trinkaus, J. P. — b
Willier, B. H. — a
Willier, B. H. — b
Willier, B. H. — c

Nervous system
General subjects
Tracy, H. C. — b
Lee, G. M. and

L
L
L

(2)L

L

(6)L

Roofe, P. G. — a

J

Lesher, S. — b

(DI

Hoadley, L. — a

L

Strudel, G. — a

L

Central nervous system
Boell, E. J. and

Shen, S. C. — a

J

Boell, E. J. and

Shen, S. C. — b

(DJ

Brain

Pflugfelder, O. — c

Blumer, Miss C. and

V

Weiss, P. A. — a

J

Rossetti, F. and

P. A. Weiss — a

J

Flexner, L. B. — a and b

M

Spinal cord
Holtzer, H. and

Weiss, P. A. — a

J

Watterson, R. L. — d

L

Watterson, R. L. — f

(6)L

Wenger, B. S. — b

L

Accessory organs
Paraphysis

Ariens Kappers, J. — a

J

Parietal organ

Oksche, A. A. — b

J

Para- and sympathetic nervous system
Kramer, T. C. — a L

Special sense organs

Eye and lens

Cate, G. ten — a (2)V

Cate, G. ten — b (1)V

Stone, L. S. — a

Deth, J. H. M. G. van — c L

Herrmann, H.; Lubchenco, L.;

McKenzie, J., Rothfels, U.

— f L
McKeehan, M.; Petzold, R. and

Weiss, P. A. — a L

Eayrs, J. T. — a M

Skeleton

General subjects

Batty, Th. — c I

Hale. L. J. — b L

Hogewoning, C. H. — a and b (6)L

Notochord

Mookerjee, S. — b (5) J

Muscular system

General subjects

Arosio, G. — a V

Orlandi, Miss A. — a V

Batty, Th. — c I

Herrmann, H.; Neukom, B. J. — a

Schneider, M. J. — a, b and c L
Herrmann, H.; Lubchenco, L.,

McKenzie, J., Rothfels, U.

— e and f L
Boell, E. J. and

Shen, S. C. — c
Nicholas, J. S. — ■ c
Rollhauser, H. — • b
Villafranca, G. W. — a
Wendt, G. G. — a

(1)M
M
M

(2)M

M

I
M

J
L

M
M
M

Alimentary tract
General subjects
Batty, Th. — b
Intestinal tract
Wierda, J. L. — a
Liver

Armstrong, P. B. — a
Hultin, J. M. T. — b
Cohen, S. and

DeMetry, J. — a
Flexner, L. B. — a
Flexner, L. B. — b

Heart, vascular system and blood

General subjects

Remotti, E. — b V

Remotti, E. — c V

Batty, Th. — c I

Reynolds, S. R. M. — b M

Heart

Grodzinski, Z. — b I

Sippel, T. O. — a

Barry, A. — a HV

Patten, B. M. — a HV

Kramer, T. C. — a L

Blood

Sinha, T. P. and

Windle, W. F. — a M

III. 7e. 9.

144

III. 7f.

Coelomic cavities and endothelia,

lymphatic system and connective

tissue

Connective tissue

Rollhauser, H. — a M

Urogenital system and sex

determination

General subjects

Kugler, O. E. — a
Bruner, Miss J. A. — a
Courrier, R. — a
Frappier, J. — a
Frilley. M. and

Raynaud, A. — a
Jost, A. D. — a
Mossman, H. W. — b
Sinclair, J. G. — c
Young, W. C. — a
Young, W. C. — b

(2)1

M

M

(6)M

(4/6) M

M

M

(5)M

(6)M
M

Kidney and urinary ducts

Bijtel, Miss J. H. — b J

Washington, Miss D, — a L

Gonads and genital tracts and accessory

glands

Hampe, A, and

Wolff, Et. — a (6)L

Huijbers, Miss M. M. — a L

Barakona, Miss M.; Bruzzone, S.;
Iglesias, R.; Lipschutz, A. and
Mardones, Miss E. — a and b

(6)M
Corner, G. W. — c M

Csapo, A. — a M

Godet, R. — a (6)M

Hummel, Miss K. P. and

Little, C. C. — a M

Raynaud, A. — b M

Reynolds, S. R. M. — c M

Sex determination

Gallien, L. — a (6)J

Padoa, E. — a J

Deth, J. H. M. G. van — a HV

Hampe, A.; Ostertag, Miss Y.;
Pfleger, Miss D.; Salzgeber,
Miss B.; Strudel, G.; Wolff,
Mrs Em. et Wolff, Et. C. — b L
Hampe, A. and

Wolff, Et. — a (6)L

Pfleger, Miss D. and

Wolff, Et. — a L

Salzqeber, Miss B. and

Wolff, Et. — a
Strudel, G.; Wolff, Mme

and Wolff, Et. — b
Wolff, Mrs Em. and

Wolff, Et. C. — a
Burns, R. K. — a

(4)L
m.
(6)L

(6)L
(6)M

Endocrine glands

General subjects

Langman, J. — a V

Blount, R. F. — c M

Jost, A. D. — a M

Hypophysis

Blount, R. F. — a J

Barakona, Miss M.; Bruzzone, S.;

Iglesias, R.; Lipschutz, A. and

Mardones, Miss E.

— a and b (6)M

Thyroid gland

Gaillard, P. J. — b L

Adrenals

Dawson, A. B. — a L

Pancreas
Miahle, P. — a

HV

f Hisfco- and cytochemistry

Cate, G. ten — b V

O'Connor, R. J. — a V

Orlandi, Miss A. — a V

Tosi, Miss L. — a V

Urbani, E. — f V

Woerdeman, M. W. — c V

Castigli Pitotti, Mrs M. — c
Konopacka, Mrs B. — a
Brachet, J. L. A. — b
Gennaro, Jr, J. F. and

Ridley, Miss E. J. — a
King, R. — a (5)

Lehman, H. E. — a and b
L0vtrup, S. — a
Osawa, S. and Yamada, T. — b
Steinert, M. and

Thomas, R. — a
Steinert, M. and

Thomas, R. — b
Takata, K. — a
Takata, K. and Yamada, T. — b
Thomason, Miss D. — b
Alvarez Gutierrez, Miss J.;

Buno, W. and Gonzalez

Marino, R. E. — d HV

III. 71

145

III. 9.

L
L
L

M

M
M

Davies, H. G. and

Walker, P. M. B. — a HV

Herrmann, H.; Neukom, B. J.

and Schneider, M. J. — a L

Herrmann, H.; Neukom, B. J.

and Schneider, M. J. — b L

Herrmann, H.; Neukom, B. J.

and Schneider, M. J. — c L

Herrmann, H.; Lubchenco, L.;

McKenzie, J.; Rothfels, U.

— e
Markert, C. L. — a
Shaver, J. R. — d
Glimstedt, G. and

Hakansson, R. — b
Grobstein, C. — a
Hintzsche, E. — a

g Immunological studies

Cate, G. ten — a V

Brachet, J. L. A. — a

Clayton, Mrs R. M. — a

Krauss, M. — b

Shaver, J. R. — b J

Ebert, J. D. — a L

Hoffman, H. — a L

Johnson, I. S. — a and b L

Nace, G. W. and

Schechtman, A. M. — a L

Petzold, R. and

Weiss, P. A. — b L

Schechtman, A, M. and

Schjeide, O. A. — b L

Shaver, J. R. — f L

Brambell, F. W. R. — a M

Hemmings, W. A. — a M

Henderson, Miss M. — a M

Windle, W. F. — f M

8 Growth and differentiation

a Growth

Oksche, A. A. — a I

Krauss, M. — a L

Zwilling, E. — c (5/6) L

McCafferty, R. E. — b (5)M

Moll, J. — a M

Wierda, J. L. — a M

a/b Growth and differentiation

Holtzer, H. and

Weiss, P. A. — b V

Pflugfelder, O. — c V

Devillers, Ch. and

Skreb, N. — b
Trinkaus, J. P. — c
Chiakulas, J. — a
Faber, J. — b
Overton, Miss J. and

Weiss, P. A. — a
Rappaport, R. — a
Fischer, Miss I. and

Weiss, P. A. — a
Petzold, R. and

Weiss, P. A. — b
Newton, B. L. — a
Smith, Miss F. W. — b
Wendt, G. G. — a

L

M

:6)m

M

b Differentiation

Cate, G. ten — b (1)V

Moog, F. — a V

Batty, Th.; Tracy, C. H.

and Winblad, J. — a
Batty, Th. — b and c
Mori, Y. — a
Tracy, H. C. — b
Tracy, H. C. — c
Clayton, Mrs R. M. — a
Krugelis, Miss E. J. — a
Krugelis, Miss E. J. — b
Lee, G. M. and Roofe, P. G. — a
Wenger, B. S. — b L

Boell, E. J. and

Shen, S. C. — c (1)M

9 Nutrition of embryo
Vachon, M. — a

D

Devillers, Ch. and

Skreb. N. — b

Trinkaus, J. P. — c

Brachet, J. L. A. — b

Faber, J. — • b

Kemp, N. E. — a

Reverberi, G. — a

Steinert, M. and

Thomas, R. — b

J

Grodzinski, Z. — a

HV

Atlas, M. — b

L

Ebert, J. D. — b

L

Herrmann, H.; Lubchenco, L.

J

McKenzie. J.; Rothfels, U.

— f

Spratt Jr, N. T. — a
Witschi, E. — ■ c

(5)L
L
L

IV. 1

146

IV. 2d.

IV. DEVELOPMENT AND GENETICS
SUBDIVISION

1 Theoretical problems and general questions
a Theoretical problems

b General questions

2 General genetical studies
a General studies

b Heteroploidy
c Hybridisation
d Chimaera
e Merogony

3 Analysis of influence of special genes and mutants
a Special genes and mutants

b Lethal factors

CHARACTER OF INVESTIGATION

( 1 ) Metabolism and respiration

( 2 ) Cytochemistry

(4) Physical treatment

(6) Influence of hormones and vitamines

1 Theoretical problems and
general questions

a Theoretical problems
Henke, K. mit

Mitarbeitern — ■ a EV + V

Ubisch, L. v. — d EV + V

b General questions

2 General genetical studies

a General studies

Weisz, P. B. — b Protozoa

Hama, T. — b D

Katakura, Y. — b D
Reeve, E. C. R. and

Robertson, F. W. — a D

Sigot, A. — a D

Cei, J. M. — a J

Griineberg, H. — a M

Sinclair, J. G. — b M

b Heteroploidy

Lepori, N. G. — a C

Haggqvist, G. — a V

Briggs, R. W. — c J
Douglas, R. I. — a

Fankhauser, G. — a (4) J

Fankhauser, G. — b J

Fankhauser, G. — c (6)

Fankhauser, G. — d
Fankhauser, G. and

Humphrey, R. R. — e
Fischberg, M. — a
Humphrey, R. R. — a
Humphrey, R. R. — b
Moore, Mrs B. C. — a
Wszelaczynska, Miss M. —
Beatty, R. A. and

Fischberg, M. — a

c Hybridization

Moore, A. R. — a

Minganti, A. — a

Minganti, A. — b

Ubisch, L. v. — f

Brachet, }. L. A. — c

Callan, H. G. — a

Gregg, J. R. — a (1);

Moore, J. A. — a

Moore, J. A. — b

Perri, T. — c

Pisano, A. — a

Pisano, A. — d

d Chimaera

Baltzer, F. — a J

Fraser, A. S. — b M

M

G

H

H

I

IV. 2c.

e Merogony

Harvey, Mrs E. B. — a

Hadorn, E. — b

3 Analysis of influence of
special genes and mutants

a Special genes and mutants

Anders, G. — a

Boterenbrood, Miss E.;

Nijenhuis, L. E.; Oppenoorth,
F. J. and Spronk, N. — b

Caspari, E. — a

Castiglioni, M. C. — a

Hartung, E. W. — a

Henke, K. mit Mitarbeitern — a

Kiihn, A. — b

Kiihn, A. — c

Rosin. S. — a

Sobels, F, H. — a

Waddington, C. H. — d

Larambergue, M. de — c

147

G

J

D

D
D
D
D
D
D
D
D
D
D
E

Baker, Mrs A. S. — a
Dalton, H. C. — a
Rostand, J. — b
Cairns, J. M. — b
Henke, K. mit Mitarbeitern ■
Landauer, W. — a
Carter, T. C. — a
Caspari, E. — b
Chase, H. B. — a
Clayton, Mrs R. M. — b
Fraser, A. S. — a
Fraser, A. S. — c
Griineberg, H. — a
Griineberg, H. — b
Phillips, R. J. S. — a
Truslove, Miss G. M. — a

b Lethal factors

Hadorn, E. — ■ d
Poulson, D. F. — c
Sobels, F. H. — b
Sobels, F. H. — c

V. 2b.

(2)1

J
I

L
a L
L
M
M
M
M
M
M
M
M
M
M

D
D
D
D

V. DEVELOPMENT AND PATHOLOGY
SUBDIVISION

1 Theoretical problems and general questions

2 General investigations in pathological development
a General subjects

b Relation between host and graft

c/d Pathological influences of chemical and physical treatment

e Teratology

3 Development of special malformations and pathological development of
special organs

a Development of special malformations
b Pathological development of special organs
(Cf. general subdivision p. 120 — 122)

4 Tumours

1 Theoretical problems and
general questions

2 General investigations in
pathological development

a General subjects

Geigy, R. — c
Jones, B. M. — a
Brandt, W. — b
Rose, S. M. — b
Witschi, E. — a

D

D

J

J

I

Fischer, Miss I. and

Weiss, P. A. — a L

Gruenwald, P. — b M

Hertig, A. T. and Rock, J. — a M

Latimer, H. B. — a M

Tondury, G. — d M

b Relation between host and
graft

Eakin, R. M. and
Harris, M. — b
Waechter, Miss H. — b
Fraser, A. S. — b M

V. 2c/d. 148

c/d Pathological influences of
chemical and physical
treatment

Hubl, H. — b C

Mori, H. — a D

Luther, W. — b V

Battle, Miss H. I. — a I

Green, Mrs E. U. — b J

Holtfreter, J. K. F. — a J

McCallion, D. J. — a J

Bagirisky, S. and coworkers — b L

Gallera, J. — b L

Gruenwald, P, — a L
Herrmann, H.; Lubchenco, L.;

McKenzie, J.; Rothfels, U.

— f L

Hunt, E. L. — a L

Zwilling, E. — a L
Carter, T. C. and

Waddington, C. H. — b M
Hammond, W. S. and

Yntema, C. L. — d M

Hettig, R. A. — a M

McCafferty, R. E. — b M

Robertson, G. G, — b M

Sinclair, J. G. — c M

Windle, W. F. — f M

e Teratology

Omodeo, P. with students — a C

Stoll, R. C. — a V

Lehmann, F. E. — f J

Landauer, W. — b L

Wolff, Et. C. — a L

Bloomingdale, Mme B. — a M

Desclaux, P. — b M

Giroud, A. — b M

Giroud, A. — c M

Morion, Miss C. — a M

3 Development of special
malformations and patho-
logical development of
special organs

a Development of special

malformations

Brandt, W. — a J

Bretscher, A. — a L

Caspari, E. — b M

Corner, G. W. — b M

V.4.

Lelievre, A, — a M

Lewis. F. Th. — b M

Shaner, R. F. — c M

Theiler, K. — a M

Tondury, G. — a M

b Pathological development of

special organs
Geigy, R. — b D

Kloft, W. — b D

Nervous system

Patten, B. M. — b M

Skeleton

Theiler, K. — b V

Heart and vascular system
Barry, A. — a HV

Patten, B. M. — a HV

Horn, E. C. — d L

Johnson, M. W. — c L

Stephan, Fr. — b L

Collister, Miss R. M.;

Dankmeijer, J. and

Snellen, H. A. — a M

Reis, R. H. — a M

Shaner, R. F. — a M

Shaner, R. F. — b M

Genital system
Hummel, Miss K. P. and

Little, C. C. — a M

Hypophysis
Blount, R. F. — b J

4 Tumours

Pflugfelder, O. — b EV + V

Hubl, H. — a C

Barigozzi, C, — b D

Hartung, E. W. — a D

Luther, W. — b V

Aloisi, Miss G. — a

Goodhart, C. B. — c

O'Brien, J. P. — a

O'Brien, J. P. — b

Spirito, A. — a

Tweedell, K. S. — a

Hamburger, V. and

Levi-Montalcini, Miss R. — b L
Barigozzi, C. — a M

Galinski, I. and

Newton, B. L. — a M

Giroud, A. — ■ d M

Newton, B. L. — b M

VI. 1

149

VI. 3c.

VI. REGENERATION
SUBDIVISION

/ Theoretical problems and general questions
a Theoretical problems
b General questions

2 General investigations, including total regeneration

3 Partial regeneration
a General subjects
b Tail regeneration
c Limb regeneration

d Regeneration of special organ systems
(Cf. general subdivision p. 120 — 122)

CHARACTER OF INVESTIGATION

(4) Physical treatment

(5) Chemical treatment

1 Theoretical problems and
general questions

a Theoretical problems

Br0ndsted, H. V. — a EV

Perry, J. H. — c M

b General questions

Herlant-Meewis, Mme H. — d C

Chiakulas, J. — a

Goodhart, C. B. — c

Heath, H. D. — a

Masuda, H. — b

Rose, S. M. — a

Trampusch, H. A. L. — e

2 General investigations,
including total regeneration

Brien, P. et

Herlant, Mme H. — a EV

Trampusch, H. A. L. — c EV

Herlant-Meewis, Mme H. — f A
Lehmann, F. E. und

Tardent, P. — e B

Singer. Miss J. — a B
Dubois, Miss F. and

Wolff, Et. C. — a C
Dubois, Miss F.; Lender, Th.

and Wolff, Et. C. -- c C
Herlant-Meewis, Mme H. — d C

Hubl, H. — b (5)C

Penners, A. — a C

Penners, A. — c (5)C

Vannini, E. — d C

Butler, E. G. — c H

Woerdeman, M. W. — c V

Hiller, S.; Krotkiewicz, T. and

Wiskont, E. H. — a
Luther, W. — a
McCallion, D. J. — a
Raunich, L. — b
Schue, Miss M. — a
Trampusch, H. A. L. — d
Br0ndsted, H. V. — a A + C

Schmirler, H. — a C

Herlant-Meewis, Mme H. — a C
Herlant-Meewis, Mme H. — b C
Herlant-Meewis, Mme H. — c C

3 Partial regeneration

a General subjetcs

Gontcharoff, Miss M. — a C

Vachon, M. — a D

b Tail regeneration

Lehmann, F. E. und

Mitarbeitern — c (5) J

Raunich, L. — b J

Russo, Miss E. and

Weiss, P. A. — a J

c Limb regeneration

Butler, E. G. — a J

Butler, E. G. — b
Dent, J. N. — a J

Hay, E. D. — a J

VI. 3c. 150

Heath, H. D. — a

Karczmar, A. G., — a

Karczmar, A. G. — b (5)

O'Brien, J. P. — c

Rose, S. M. — a

Rose, S. M. — c

f Rotmann, E. — b

Singer, M. — a

Singer, M. — b

Yntema, C. L. — b

d Regeneration of special
organs

Skin

Kiihn, A. — a D

Hunt, E. L. — b (4/5)J

Nervous system (general sub-
jects, central nervous system and
nerves)

Stefanelli, A. — c V

Boeke, J. — a V

Thermes, G. — a V

Baffoni, G. — b K

Campenhout, E, van — b L

Chambers, W. W. and

Windle, W. F. — a M

Liu, J. C; Windle, W. F.

and coworkers — a M

Perry, J. H. — c M

Edds Jr, M. V. — a V

Edds Jr, M. V. — b
Leghissa, S. and

Pasquini, P. — d
Singer, M. — b
Leghissa, S. — e

Eye and lens
Lender, Th. and

Wolff, Et. C. — a
Hasegawa, M. — a
Hasegawa, M. and Sato, T.
Sato, T. — a
Stone, L. S. — a
Amprino, R. M. — c
Hasegawa, M. and Sato, T.
Horn, E. C. — a
Ichikawa, M. — c
Pasquini, P. — a
Reyer, R. W. — a
Stone, L. S. — a
Woerdeman, M. W. — a

Skeleton

Hadorn, E. — a
Kocher, W. — a
Mapp, F. E. — a

Liver

Wilson, J. W. — a

Gonad

Herlant-Meewis, Mme H. -

Mossman, H. W. — a

VI. 3d.

V

(5)J

J
M

C

I
c I
J
I
L

b J
J
I
J
J
J
HV

V

e C
M

VII. METAMORPHOSIS
SUBDIVISION

1 Theoretical problems and general questions

2 General investigations
a General subjects

b Hormones and metamorphosis
c Metamorphosis of part of the organism
d Metamorphosis of special organ systems
(Cf. general subdivision p. 120 — 122)

CHARACTER OF INVESTIGATION

(5) Chemical treatment

VII. 1

151

VII. 2d.

1 Theoretical problems and

general questions

Risler, H. — a D

Castigli Pitotti, Mrs M. — b J

Cei, J. M. — a J

2 General investigations
a General subjects

Leghissa, S. — f
Padoa, E. — b
Suomalainen, H. and
Toivonen, S. — a

Herlant-Meewis, Mme H. -

— c

C

Bonde, C. von — a

D

Goszwald, K. — a

D

Henke, K. mit Mitarbeitern

— a

D

Kloft, W. — a

D

Marlier, G. — a

D

Monterosso, B. — a

D

Piepho, H. — a
Yao, T. — a

D
D

Okazaki, Miss K. — a

G

Bailey, J. R. and
Horn, E. C. — a

I

Baxter, E. W. — a

I

Ubisch, L. v., — e

I

Dent, J. N. — b

J

Gennaro Jr, J. F. and

Ridley, Miss E. J. — b

J

Gennaro Jr, J. F.; Goodman,

D.B.

and Wirth, Miss P. — c

J

Gennaro Jr, J. F. and

Goodman, D. B. — e

J

Leghissa, S. and

Pasquini, P. — d
Stuchly, Z. — a

(5)1
J

b Hormones and metamorphosis
Bodenstein, D. H. F. A. — b

D

Geigy, R. — a

D

Ichikawa, M.

with co-workers — a

D

Pflugfelder, O. — a

D

Hartwig, H. — a

Ber, A. and Orlowski, A. —

- a

V
J

Delsol, M. — a

J

Fankhauser, G. — d

J

c Metamorphosis of part of the
organism

Gennaro Jr, J. F. and

Wirth, Miss P. — d J

Newth, D. R. — e J

d Metamorphosis of special
organ systems

Skin (general subjects and

pigment pattern)

Schwinck, Miss I. — a D

Baker, Mrs A. S. — b

Cordier, J. — a

Faber, J. — c

Nervous system

Rossetti, F. and

Weiss, P. A. — a
Stefanelli, A. — b
Sense organs fearj
Newth, D. R. — b
Witschi, E. — b
Skeleton (general subjects and
skull)

Anderson, Miss I. L. — a
Horn, E. C. — c
Sedra, Shokralla, N. — c
Sedra, Shokralla N. — d
Muscular system
(visceral muscles)
Sedra, Shokralla N. — c
Sedra, Shokralla N. — d
Intestinal tract
Faber, J. — d
Vascular system
Millard, Mrs N. A. H. — a
Endocrine glands

Rehm, Miss M. — a D

Schwinck, Miss I. — a D

152

Short notes and references to new technical methods

ELEVAGE DU DISCOGLOSSE AU LABORATOIRE

par M. le Prof. Dr L. Gallien — Lab. de Biol. anim. du P.C.B., Rue Cuvier 12,

Paris Ve.

II est possible de conserver au Laboratoire, en bon etat physiologique,
le Discoglosse, pendant des mois et meme des annees, afin d'obtenir des
pontes a peu pres a volonte. Voici les elements essentiels de l'elevage tels
que nous les utilisons avec succes.

L'unite de l'elevage est constitue par une douzaine de couples. Nous
separons les males des femelles, et chaque lot est conserve dans un aquater-
rarium tres simple. Celui-ci comprend deux elements.

— Un aquarium vitre dun type standard mesurant: Lg. 35 cm., Larg.
23 cm., Haut. 25 cm. dans lequel on met de l'eau sur une hauteur de 3 a 5 cm.

— Une cage en bois qui s'adapte a l'aquarium. Cette cage montee sur 4
pieds s'encastre sur l'aquarium et mesure 30 cm. de profondeur et 18 cm.
de hauteur. Les cadres en bois sont recouverts d'un fin grillage metallique.
Un panneau mobile grillage couvre la cage, et un panneau de bois contre-
plaque, mobile egalement, constitue le plancher. On dispose a l'interieur de
la cage des niches en briques creuses ou en bois dans lesquelles les animaux
aiment se cacher. Une boite de Petri regoit les rations de larves de Tenebrio
destinees a la nourriture. Enfin un plan incline, pourvu de petites barres trans-
versales, permet aux animaux de remonter de l'aquarium dans leur cage.

Nourriture:

Elle est constitute par des larves de Tenebrio molitor. La ration est calculee
sur la base de 10 larves par semaine et par animal. On la distribue en deux
rations hebdomadaires. 24 heures apres les repas l'eau de 1'aquarium est
changee, et la cage nettoyee a l'eau et a la brosse.

L'elevage des Tenebrio est fait dans de grandes lessiveuses en zinc, pourvues
d'un couvercle. On remplit celles-ci de son, on ajoute de temps en temps
quelques carottes et on ,,ensemence" avec des Tenebrio adultes. En pratique,
on dispose d'un jeu de 6 lessiveuses pour une trentaine de Discoglosses.
Chaque lessiveuse est exploitee pendant environ deux mois, a partir du moment
ou elle apparait abondamment pourvue en grosses larves. Ensuite on la vide
et on renouvelle la culture. En operant ainsi par roulement, on a pendant toute
l'annee une bonne reserve de nourriture.

II y a interet en hiver a entretenir des souches de Tenebrio adultes qui
pondent. II suffit d'en reserver un certain nombre que Ton place dans des
cristallisoirs remplis de son a l'etuve reglee a 25°. Dans ces conditions, la
reproduction continue, et on utilise ces reserves pour les ensemencements
d'hiver.

La ponte provoquee, son declenchement au Laboratoire:

Quand on desire des oeufs de Discoglosse, on choisit une ou deux femelles
mures n'ayant pas pondu depuis 2 ou 3 mois et deux ou trois males. Si on
desire une ponte d'un couple donne, on isole le couple dans un aquaterrarium.

Le choix des males est important. On prend des animaux en bon etat
physiologique; on choisi ceux dont la callosite est bien noire et qui montrent
l'ebauche de la ,,peau sexuelle". Ceci est indique par le noircissement du
menton resultant du developpement des papilles keratinisees de la peau. Le

153

menton doit etre gris. Si le male a une peau sexuelle bien nette la ponte est
a peu pres assuree en 48 a 72 heures. Sinon le delai de ponte est plus long.
II faut eliminer du choix, les males ayant une callosite blanche ou simplement
grise, ils ne sont pas ,,murs".

Le choix des progeniteurs etant fait, le ou les couples, sont mis dans un
aquaterrarium isole, dans lequel le niveau d'eau est porte a 15/18 cm. On
dispose quelques pierres ou briques creuses sur le fond et a l'aide d'une
resistance electrique plongeant dans l'eau, on eleve la temperature jusqu'a
25°/26°. Si l'operation est bien conduite, on entend assez rapidement le chant
des males, caracterise par une serie de Rha-Rha-Rha rapproches. Entre 48 et
72 heures l'accouplement se produit et les femelles pondent. Les oeufs isoles
sont retrouves au fond de 1'aquarium. II suffit de les recueillir, de les laver
par passage dans deux ou trois bains d'eau, de maniere a eliminer les traces
de mues, de feces. La ponte s'effectue souvent la nuit.

Elevage des tetards:

Le developpement embryonnaire du Discoglosse est tres rapide et sa vie
larvaire courte: de l'ordre de 30 a 35 jours pour une temperature de 23°.
Jusqu'ici je n'ai observe que des races differenciees quant au sexe (Banyuls,
Alger, Tozeur. Tunis), c'est a dire qu'on observe d'emblee a la metamorphose
50 % de males et 50 % de femelles.

L'elevage des tetards est facile. La nourriture est constitute par des epinards
cuits ou de la salade de laitue, dont on cuit les feuilles vertes. Deux fois par
semaine on donne aux animaux un petit fragment de rate, que Ton enleve au
bout de 3 a 4 heures. On maintient l'eau des elevages tres claire en ajoutant
quelques Daphnies qui ne tardent pas a palluler.

ELEVAGE DES LARVES ET DES PETITES GRENOUILLES DE

DISCOGLOSSUS PICTUS

par M. le Dr P. D. Nieuwkoop, Hubrecht Laboratorium, Utrecht, Holland.

Nous n'avons que peu de details a ajouter a la methode d'elevage des
larves, decrite par M. le Professeur L. Gallien. Nous avons cultive les larves
dans un petit aquarium bien equilibre (30 X 30 X 40 cm.). Comme nourriture
nous avons donne regulierement des feuilles de salade, sans renouveler toutefois
l'eau pendant toute la periode de cultivation. II se forme ainsi une couche de
detritus au fond de 1'aquarium et l'eau prend peu a peu une couleur verdatre.
Bientot on voit apparaltre des colonies de Daphnides se developpant rapi-
dement. La temperature peut varier entre 18 et 25° C sans aucun desavantage.

Toutes les larves parviennent au stade de la metamorphose au bout de

4 a 8 semaines. Le processus de la metamorphose s'accomplit avec une vitesse
relativement grande. La reduction de la queue ne prend qu'une semaine, tandis
que la transformation de la tete et celle du tronc se realisent meme en quelques
jours. Si les larves sont bien nourries, la metamorphose s'accomplit sans diffi-
culty et les larves se transforment en petites grenouilles d'une longueur de

5 a 8 mm. Au moment ou une larve commence a faire des efforts pour quitter
l'eau, il est bien necessaire de la placer dans un aqua-terrarium. dans lequel
elle peut sortir de l'eau dune maniere plus facile.

Des ce moment la phase la plus difficile de l'elevage fait son debut. Le
changement de l'animal aquatique en animal terrestre donne de grandes diffi-
cultes quant a la nourriture. II est indispensable de leur donner une nourriture
animale tout a fait menue et variee. Les larves, nymphes et adultes des

154

Drosophiles ne satisfont pas. Cette nourriture n'est pas appreciee et les petites
grenouilles meurent apres une ou deux semaines.

Nous avons offert de petits morceaux d'Enchytres, qui remuent pendant
une periode assez longue. Les petites grenouilles aiment beaucoup cette nour-
riture et commencent a croitre de facon extraordinaire. Pour que cette nour-
riture elle aussi ne soit pas trop homogene, nous l'avons alternee avec un
menu compose de petits crustaces, arachnides, collemboles et de larves
d'insectes, etc., recueillis de la maniere suivante: apres avoir rassemble une
quantite de feuilles diverses, humides et deja a moitie pourries, nous les avons
deposees sur un tamis en metal d'un diametre de 60 cm., qui a son tour se
trouve place sur un entonnoir de meme taille. Une lampe de ± 100 watt est
suspendue au dessus de ce tamis pour chauffer et secher tres lentement cette
couche de feuilles. Les petits animaux s'enfoncent peu a peu et finissent par
tomber dans l'entonnoir, se debouchant dans une petite cuvette ou les animaux
s'accumulent sur quelques feuilles humides. II suffit de verser le contenu de
la cuvette dans 1'aqua-terrarium. Des que les petites grenouilles ont atteint
une longueur de 15 mm. ou davantage, on peut leur donner a manger des
tout petits vers, une nourriture excellente pour les amphibiens. Cette methode
d'elevage nous a fourni des resultats bien satisfaisants.

General questions and announcements

I. The Central Embryological Library

The foundation of a central embryological library has met great enthousiasm
among the embryologists all over the world. We already received an important
number of reprints for the central library, for which we wish to thank the
sponsors very cordially.

Most embryologists have sent us not only their recent but also their
older publications, which greatly contributes to the completeness of the
central collection.

We are cataloguising our collection and have finished our alphabetical card-
index, so that we can already fulfil demands for special
publications, when title, name of author, year of appearance and
name of periodical are mentioned. They can be borrowed from the institute
under certain conditions 1 ). Next year we hope to be able to give more
complete information, as e.g., survey of literature on special subjects, etc.

For those embryologists, who have not yet realized the use and significance
of this Central Embryological Library we are repeating its aims.

a) Every embryologist can ask for information about literature on special
subjects or of certain authors, about newly published literature, etc., etc.

b) Every embryologist can ask for special papers which are not available
in his own country. The Hubrecht Laboratory will lend them — under
certain conditions *) — 'to every embryologist.

1 ) Reprints

a) can be borrowed for o n e m o n t h at the utmost, time for shipment not included.

b) The receipt, added to the consignment, must be returned by return of postage
after being controlled and signed.

c) In case of high forwarding-charges they have to be partly carried by the applicant.

155

c) Every embryologist can personally consult the Library of the Hubrecht
Laboratory at all times.

d) The central library will be at the disposal of every embryologist, who is
carrying out scientific work at the Hubrecht Laboratory.

Since a part of this central collection will be regularly lent out, a single
collection cannot fulfil all requirements. For providing information about
literature and for the scientific work of the staff of the Hubrecht Laboratory
and of visiting embryologists we need a collection which is complete and
which is at their disposal at all times. We therefore ask every embryologist
to send us two copies of his/her papers, one under the name of the , .Central
Embryological Library of the Hubrecht Laboratory" and one under that
of Dr P. D. Nieuwkoop, whose collection will form the special collection
for internal use.

In case of private collections, which are not in use any more and which
may otherwise get lost, it will be highly appreciated if they could be added
to the Central Embryological Library of the Hubrecht Laboratory.

II. The Central Embryological Collection of slides
and material

The extensive embryological material, collected by Prof. Dr A. A. W.
Hubrecht during his life, is present at the Hubrecht Laboratory in the form
of an enormous number of slides and an extensive material kept in alcohol.
This collection, containing complete embryological material of many very
interesting and rare animals, is in very good condition.

Dr D. de Lange, Director of the Hubrecht Laboratory from 1916 up till 1947,
has extended this material in several aspects, while a number of embryologists
have donated their private collections to the central collection of the Hubrecht
Laboratory.

At the present moment the Hubrecht Laboratory possesses the complete
collections of slides of the late Prof. Dr Anton Dohrn, former Director of
the Zoological Station in Napels, a part of the collection of the late Prof.
Dr E. Selenka, the experimental-embryological collection of slides of the late
Prof. Dr H. Spemann, etc., while recently Prof. Dr F. Hochstetter from
Vienna promised to leave his very important and extensive^ collection of
slides and material to the „Institut International d'Embryologie" to be placed
in the Hubrecht Laboratory too.

The central collection will be at the disposal of every embryologist, a s
they can study the material at the Hubrecht Labo-
ratory, and parts of the collection may be borrowed
under special conditions 1 ).

We hope to compose a general catalogue of the whole collection in the

X ) Slides. .

a) if they do not consist of very important and rare material, can be borrowed tor halt
a y e a r at the utmost, time for shipment not included.

b) The receipt, added to the consignment, must be returned by return of postage
after being controlled and signed.

c) The slides have to be packed safely on returning.

d) In case of high forwarding-charges they have to be partly carried by the applicant.

Material
can be borrowed and studied under the same conditions, but have to be returned as such or
in form of slides, which become part of the central collection.

156

near future. This catalogue will then be sent to all embryological institutes
in order to make the collection more easily accessible.

As a central embryological collection, brought together centrally, where
embryologists can find accomodation for studying it, has a much higher value
for the Embryological Science than individual small collections, distributed
all over the world, we like to interest you in this Central Collection of the
International Embryological Institute in Utrecht.

III. The Normal Table of Xenopus laevis

In addition to what has been mentioned in the first issue of the G.E.I.S.,
we can now state that an extensive material of the normal development of
Xenopus laevis has been collected in Stellenbosch, South Africa, by Mr
J. Faber, assistant at the Hubrecht Laboratory. We want to thank the
Directors of the Zoological Institute and the Inland Fisheries Department
in Stellenbosch for their lively interest and direct assistance to the scientific
work of Mr Faber.

We have prepared a continuous series of about 70 developmental stages
from the very first beginning of development up till the end of metamorphosis.
This material has been distributed among the collaborators in order to be
investigated in the course of about one year, so that we hope to be able
to publish this normal table in the course of the year 1952.

At the present moment the following embryologists have promised their
collaboration to this international team-work:

Prof. Dr J. Ariens Kappers (Groningen, Holland), Miss Dr J. H. Bijtel
(Groningen, Holland), Dr A. Bretscher (Bern, Switzerland), Prof. Dr J.
Cordier (Brussels, Belgium), Mr G. A. van Eeden (Potchefstroom, South
Africa), Mr J. Faber (Utrecht, Holland), Dr J. C. v. d. Kamer (Utrecht,
Holland), Dr J. J. Kollros (Iowa City, U.S.A.), Mrs Dr N. Millard (Cape
Town, South Africa), Dr D. R. Newth (London, England), Dr P. D. Nieuw-
koop (Utrecht, Holland), Prof. Dr J. Pasteels (Brussels, Belgium), Mr R.
van Pletzen (Bloemfontein, South Africa), Prof. Dr Chr. P. Raven (Utrecht,
Holland), Mr P. A. J. Rijke (Potchefstroom, South Africa), Dr Shokralla
N. Sedra (Alexandria, Egypt), Mr A. L. Smit (Stellenbosch, South Africa),
Mr W. Steyn (Bloemfontein, South Africa; now Utrecht, Holland) and
Dr S. Toivonen (Helsinki, Finland).

The subjects which the individual collaborators will study, can be found
in chapter b of this issue.

Communications of the „Institut International d'EmbryoIogie"

The I. I.E. has to announce with regret the loss of two of its members by
death: Prof. Dr Hans de WINIWARTER, who died July 13th, 1949, at
the age of 74 years; and Prof. Dr Eckhard ROTMANN. who died September
2nd, 1950, 43 years old.

Prof. Dr S. R. DETWILER, New York, and Prof. Dr A. T. HERTIG,
Boston, resigned their membership.

The Symposium, which was to be held under the sponsorship of the I. I.E.,
through the International Union of Biological Sciences, in the summer of
1951, has been postponed until 1952. Therefore, the next general assembly
of the I. I.E. will be postponed too, in order that it may be combined with this
Symposium.

157
Review of recently published textbooks on Embryology

We will open this new chapter of the G.E.I.S., as we feel the desirability
of an annual survey of the recently published text books. We could suffice
by giving only a list of titles, but we feel that a serious review of contents
and practicability will be of much greater value.

We therefore ask every author of embryological text books to send us
one presentation copy. We will bind ourselves to review it in
the next issue of the General Embryological Information Service. The text
book will be added to the Central Embryological Library, to which it will
form a valuable acquisition.

The fact that the G.E.I.S. is read by almost all embryologists over the
whole world may justify sufficiently the form of organisation we
choose for this chapter.

Review of textbooks.

J. BOEKE. Leerboek der ontwikkelingsgeschiedenis van den mensch (en
de hoogere gewervelde dieren). N.V. A. Oosthoek's Uitgevers-Maatschappij,
Utrecht, 1949. 676 pag., 413 fig. / 37,50.

With the appearance of this , .textbook of embryology of man and the
higher vertebrates", by the well-known Utrecht histologist and embryologist,
Prof. }. Boeke, a great work has been completed. Up till now, no textbook
of embryology in dutch language existed. As the author indicates in his
preface, the book is destined for biology students wishing to get acquainted
with the development in various groups of the Vertebrates, for medical
students, who, in their study of the structure of the adult human body, highly
need a detailed knowledge of the development of this structure, and for the
medical practitioner, who finds himself often placed, in his profession, before
questions which can only be answered by embryology. Therefore, besides a
detailed description of normal development in man and the higher Vertebrates,
the most common types of congenital malformations are shortly discussed.
Furthermore, the physiology of the placenta and of the embryo are treated
in some detail.

It is a special feature of the book that the results of experimental embryology
are extensively taken into account. For the difficulties, arising from the
combination of descriptive and experimental data in one text, a solution has
been found by a treatment of the most fundamental problems of experimental
embryology in one of the first chapters; more detailed information on special
developmental processes is given in later chapters in combination with the
descriptive data.

It is to be expected in a text of this size to find some error or omission of
data. It is also not surprising that at many places, especially in the parts
devoted to experimental embryology, the most recent publications have not
been mentioned. But this cannot diminish our admiration for the way in
which the author has carried out the task that he had set himself.

The book is richly illustrated; the illustrations are, in general, very good.
There is a list of literature of 8 pages and an index of 12 pages.

CHR. P. RAVEN.

158

KARL PETER. ,,Grundlagen einer funktionellen Embryologie, eine biolo-
gische Studie", Johann Ambrosius Barth/Verlag/Leipzig. 170 Seiten.

In this book the author treats a rather neglected aspect of embryological
development, viz., the problem of the functional unity, which a developing
organism forms at every moment of it life history. The author divides the
problem into two main questions, viz., the factors which enable the develop-
ment of the form, and those which guarantee the maintenance of life.

After a separate treatment of both questions, their interrelations are analysed,
while in a next chapter the factors, which guarantee the maintenance of life,
are studied in the various groups of Vertebrates.

Then the plasticity of the developing organism is discussed, a plasticity
which enables the embryo to adapt itself to the gradually changing external
and internal conditions. Here the author mentions the power of regulation,
the resistance against poisons, the power of regeneration, the dependent and
independent development of parts of the organism at successive stages of
development, etc.

A special chapter has been devoted to a comparison between larval and
adult life, in order to show the special demands which the embryological
development makes for the maintenance of life.

In his book ,,Die Zweckmassigkeit in der Entwicklungsgeschichte", which
appeared in 1920, the author already drew the attention to the efficiency
of all embryological processes, which are aimed at the requirements of the
adult state. This ,, final" view forms a very valuable complement to the com-
monly studied causal and genetical aspects of development, as here we
approach the problem from a quite different point of view. Although these
various points of view are complementary fields of science, they really
support our general understanding of the problems of development and life.
We will, therefore, express our gratitude to the author having given a more
systematical consideration of the whole development seen in the light of
efficiency in this book. This book will certainly stimulate the interest in
this branch of science. We are already looking forward with interest to
the second part of this study, which will deal with the relations between the
various embryological processes and the functions of the various organ
systems.

This book is rather simply executed as direct consequence of the great
difficulties which had to be overcome in these years in Germany so shortly
after the second world war. We hope that the second part will be printed
on better paper and will be more richly illustrated. The illustrations themselves
are good, but do not always show to full advantage on this paper.

The book contains an extensive list of literature, which gives mainly
somewhat older literature.

P. D. NIEUWKOOP.

159
Annual iurvey of embryological literature

INTRODUCTION.

From several sides we received the request whether the Hubrecht Labo-
ratory should be willing to publish an annual survey of the ,, complete"
embryological literature of the preceding year. After we had gathered infor-
mation concerning the desirability and about the possibility of getting enough
cooperation for realizing this project, we can announce that the Hubrecht
Laboratory is willing to organise such a service in the near future.

We therefore propose to split the G.E.I.S. into two sections — one giving
a survey of the current scientific work in the year in question and the other
giving the literature published in the preceding year.

In order to avoid confusion, we draw your attention to the different aims
of both sections, a) The survey of the current scientific work will simplify
correspondence among workers on related subjects and will stimu-
late international cooperation and team work, b) The
survey of the literature published in the preceding year will make the
extensive modern literature more easily accessible
to every embryologist.

We propose the following organisation.

Every embryologist will be asked to send to the Hubrecht Laboratory all
his/her publications dealing with embryology in its widest sense, so that we
can compose a general list from our own collection.
In this manner we need only the promise of every embryologist to send us
all his/her publications. This form of organisation includes a great saving of
time and work to every collaborator and guarantees, moreover, that all publi-
cations listed in the G.E.I.S. are present and available at the
Hubrecht Laboratory. In this way, the central library will be of direct use
to every embryologist. Once a year we will send a request to every embryo-
logist for the latest literature. This year this request will be included in this
issue of the G.E.I.S.

As at the present moment the central embryological library has not yet
reached such a degree of completeness that it can already give a m o r e or
less complete survey of all embryological literature published over
the whole world, and Mr P. D. Nieuwkoop will probably leave the laboratory
for one year, we believe that it will be better to start such a service not
before next year.

W e, however, ask every embryologist to send all
his/her recent and older publications so that we will be
able to publish a more or less complete survey of the embryological literature
in the course of the year 1952.

Mill Willi! I IKK \m

UH IBb