GENERAL EMBRYOLOGICAL IMFORMATION SERVICE 1961 (ninth issue) ISSUED BY THE HUBRECHT LABORATORY Issued by the Hubrecht Laboratory on behalf of the Foundation ,, General Embryological Information Service Janskerlchof2 - Utrecht - Netherlands CONTENTS a) Introduction p. 5 b) List of names and addresses with subjects under investigation (alphabetical order) p. 7 c) List of institutes with investigators engaged in developmental biology (geographical order) p. 158 d) Subject index (systematical order) p. 194 I Descriptive and comparative embryology p. 198 II Experimental developmental morphology p. 209 III Developmental physiology p. 221 IV Development and genetics p. 237 V Development and pathology p. 240 VI Regeneration p. 244 VII Metamorphosis p. 247 VIII Somatic embryogenesis p. 249 IX Experimental developmental morphology of plants .... p. 249 e) New technical methods in developmental biology (arranged accor- ding to subjects) p. 250 f) "Supply and Demand" Service for laboratory animals .... p. 257 g) Communications from the Hubrecht Laboratory p. 262 I The team work project p. 262 II The building project P- 262 III The scientific staff p. 262 IV Guest workers p- 262 V The Central Embryological Library p. 263 VI The Central Embryological Collection of slides and material p. 263 VII The Photographic Reproduction Service p. 264 h) Communications of the "International Institute of Embryology" (Section of Developmental Biology of the I.U.B.S.) p. 265 i) Announcements of recently published books on development and related subjects P- 270 INTRODUCTION In the interest of the subscribers we should like to make the following remarks concerning the contents of the ninth full issue. No essential alterations have been made in the general set-up of the periodical. However, the organization of the "List of Subjects" (now called "Subject Index", see page 194) has undergone a number of changes, particu- larly as regards the key to organ systems, and the subdivisions of the main rubrics. These changes are meant to render the system more logical, more up-to-date and easier to use. A new general rubric has been added, entitled "Somatic Embryogenesis" (see page 249). This name was chosen to encompass all developmental pro- cesses associated with asexual propagation, which hitherto used to be classified under one of the other general rubrics, but which in fact do not belong to embryology proper. Some new contacts have been established with Argentine, continental China and Greece, and the contacts with the U.S.S.R. and Eastern Germany have been extended. Information concerning the Hubrecht Laboratory and the "International Institute of Embryology" may be found on page 262 and on page 265 respectively. P. D. NIEUWKOOP NOTICE: As a result of a recent revaluation of the Dutch guilder, the equiv- alent of the subscription price of H.fl. 28.50 is no longer $ 7.50, but now amounts to slightly less than $ 8.00. LIST OF NAMES AND ADDRESSES with Subjects under Investigation (alphabetical order) AARON, C. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France ABELOOS, M. Prof. — Lab. de Biol, gener. de la Fac. des Sci. et Stat. marine d'Endoume (Marseille), Place Victor Hugo, MARSEILLE, France a. Regeneration. Actinia spec. (Anthozoa), Procerodes spec, Cercyra spec, Dugesia spec. (Turbellaria) , Polydora spec, Magalia spec, Sal- macina spec. (Annelida), Sphaeroma spec, Idotea spec (Isopoda, Crustacea) ABERCROMBIE, M. B.Sc, M.A., F.R.S., F.I.I.E., Prof. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Study of cell relations in tissue culture. Gallus domesticus (Aves), Mus musculus (Rodentia) (in collaboration with Mrs. E. M. STEPHENSON, Kensington, N.S.W., Australia, and Miss D. M. LAMONT) b. Healing of skin wounds. Rattus spec, Cavia spec. (Rodentia), Orycto- lagus spec. ( Lagomorpha) (in collaboration with D. W. JAMES) ACHTELIK, W. Mgr. biol. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. Embryology. Planaria spec (Turbellaria) b. Histochemistry of the marginal bodies. Planaria spec. (Turbellaria) c The dedifferentiating influence of estrogens. (Mammalia) d. Cytological and histochemical (nucleic acids) investigations on the re- generating tail. Xenopus laeuis (Anura) ADAMS, Miss A. E. A.B., M.A., Ph.D., Prof. — Dept. of Zool., Mount Holyoke Coll., SOUTH HADLEY, Mass., U.S.A. ADAMS, W. E. B.Med.Sc, Ch.B., M.B., M.Sc, Ph.D., D.Sc, Prof.— Dept. of Anat., Med. School, Univ. of Otago, Great King Street, DUNEDIN, C.l, New Zealand (no embryological work in progress) ADAMS SMITH, W. N. M.B., Ch.B. — Dept. of Anat., Med. School, Univ. of Otago, DUNEDIN, C.l, New Zealand a. Teratology of heart. Rattus spec. (Rodentia) ADAMSTONE, F. B. Ph.D., Prof. — Dept. of Zool., Univ. of Illinois, UR- BANA, 111., U.S.A. ADELMANN, H. B. Dr., F.I.I.E., Prof. — Dept. of Zool., Cornell Univ., ITHACA, N.Y., U.S.A. ADHIKARI, S. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12. India a. Effects of mitosis-inducing substances on differentiation. Gallus gallus (Aves) b. Organ resynthesis in vitro. Bufo spec. (Amphibia) (in collaboration with S. MOOKERJEE and Miss B. NURJEHAN) Agr-And AGRELL, I. P. S. Fil.Dr., M.I.I.E., Prof. — Zoophysiol. Inst., Univ. of Lund, LUND, Sweden a. Mitotic activities in relation to differentiation. b. Nuclear changes during karyogamy. AKESSON, B. Fil.dr. — Embryol. Dept., Zool. Inst., Univ. of Lund, LUND, Sweden AKETA, K. D.Sc. — Biol. Inst., Fac. of Sci.. Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Biochemistry of fertilization with special reference to carbohydrate and carboxylic acid metabolism. Hemicentrotus pulcherrimus, Pseudocentrotus depressus (Echinoidea) b. Cytochemistry and biochemistry of egg mitochondria. Hemicentrotus pul- cherrimus, Pseudocentrotus depressus (Echinoidea), Oryzias latipes (Teleostei) ALAMELU, Mrs. M. G. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Nucleo-cytoplasmic relationship. Amoeba spec. (Ciliata) (in collaboration with J. DUTTA, S. MOOKERJEE, Miss D. MUKHERJI and L. WAIDYASEKARA) ALAPHILIPPE, F. Lic.es Sci. — Lab. de Zool. et Biol, anim., Fac. des Sci., POITIERS, Vienne, France a. Reproduction et developpement. (Pulmonata, Gastropoda) b. Neurosecretion. (Pulmonata, Gastropoda) ALBANESE, Miss M. P. — 1st. di Zool., Univ., di Messina, MESSINA, Italia a. Ricerche citometriche sugli ovociti in accrescimento. Arbacia lixula (Echi- noidea) ALBERT, J. — Lab. de Biol, anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, TALENCE (Gironde), France a. Morphogenese de l'appareil digestif. (Anura) ALDEN, R. H. Ph.D., Prof. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Study of egg transport and implantation; early development of tropho- blast; embryo-maternal relationships during nidation. Mus spec. (Ro- dentia) ALESCIO, T. M.D. — Div. Biol, del C.N.E.N., Sincrotrone, FRASCATI (Roma), Italia a. Development in vitro of embryonic organs. b. Effect of ionizing radiation on embryonic organs developing in vitro. ALEXANDER, G. M.Agr.Sci. —Div. of Animal Physiol., C.S.I.R.O.. Ian Clunies Ross Animal Research Lab., Great Western Highway, (P.O.Box 144, Parramatta), PROSPECT, N.S.W., Australia a. Investigations of the physical and physiological relations between mater- nal and embryonic tissues. Ovis spec. (Artiodactyla) ALLfiAUME (BORDES), Mrs. N. Dr.es Sci. — Lab. de Zool. exper., Fac. des Sci. de Bordeaux, 40 Rue Lamartine, TALENCE (Gironde), France a. Recherches experimentales sur la determination des caracteres larvaires et imaginaux. Calliphora spec. (Diptera) ALLEN, R. D. B.A., Ph.D., M.I.I.E. — Dept. of Biol., Princeton Univ., Box 704, PRINCETON, N.J., U.S.A. a. Structural, rheological and optical properties of the cytoplasm of amoeboid cells. (Embryonic cells, inter alia) b. Physical changes at fertilization. (Echinoidea) ALTEN, P. J. VAN M.S., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W.Polk St.. CHICAGO 12, 111., U.S.A. a. Development of the digestive tract. Gallus domesticus (Aves) b. Ontogeny of the immunological mechanism. Gallus domesticus (Aves) AMANUMA, A. M.Sc. — Dept. of Biol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a. Experimental analysis of the development of the primordial germ cells. (Amphibia) b. Hormonal effect on gonadal development. (Amphibia) AMOROSO, E. C. F.R.S., M.I. I.E., Prof. — Dept. of Physiol., Roy. Veter. Coll., (Univ. of London), Royal College St., LONDON N.W. 1, Eng- land AMPRINO, R. M. M.D., M.I.I.E., Prof. — Inst, of human Anat., Fac. of Med., Policlinico, BARI, Italy a. Relations between ectoderm and mesoderm in the morphogenesis of the wing. Gallus domesticus (Aves) b. Regulative capacities of the wing anlage. Gallus domesticus (Aves) c. Analysis of the twinning of limb buds. Gallus domesticus (Aves) d. Histological and histochemical changes in the developing tissues of di- minutive eye-bulbs. Gallus domesticus (Aves) AMY. R. L. M.S., Ph.D. — Dept. of Biol., Southwestern at Memphis, MEMPHIS 12, Tenn., U.S.A. a. Relative sensitivity of various developmental stages to ultraviolet light ( photoreactivation studies to be included). Habrobracon juglandis (Hy- menoptera) b. Descriptive embryology. Habrobracon juglandis (Hymenoptera) ANCEL, P. A. Dr., F.I.I.E., Prof. (Honor., Emer.) — Inst, de Biol. Physico- Chimique, 13 Rue Pierre Curie, PARIS Ve, France ANDERS, G. Dr.Phil. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zu- rich, Kiinstlergasse 16, ZURICH 6, Schweiz ANDERSON, D. T. B.Sc, Ph.D. — Dept. of Zool., Univ. of Sydney. SYDNEY, N.S.W., Australia a. Embryology. (Diptera; Isoptera) ANDERSON, J. W. B.A., M.S., Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON 6. Wis., U.S.A. a. Comparative histophysiology of placentas and fetal membranes, especially protein transfer. Sus scrofa ( Artiodactyla) , Geomys bursarius. Rattus norvegicus, Cavia cobaya (Rodentia), Eptesicus fuscus, Noctilio labialis (Chitoptera) , Canis familiaris (Carnivora) ANDO, S. B.Sc, M.A. — Research Inst, of Environmental Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA, Japan a. Electrophysiological study of development of nerve system. Oryzias latipes (Teleostei) ANDREOLI, Miss V. Dr. — 1st. di Biol, gen., Fondazione Agraria, S. Pietro, PERUGIA, Italia a. Morfogenesi proteica. ANDRES, G. Dr., M.I. I. E. — Zool. Inst, der Johannes Gutenberg-Univ.. Saarstr. 21, MAINZ, Deutsche Bundesrepublik ANDRES, M. Y. D.V.M., M.Sc, Ph.D. — Dept. of Veter. Anat., Ohio State Univ., 1900 Coffey Road, COLUMBUS 10, Ohio, U.S.A. Andres- Aut a. Physiology and histochemistry of the developing pineal organ. (Aves) b. Antibody inhibition of pineal development. Meleagris gallopavo (Aves) c. Histochemistry of the developing hypothalamus and pituitary. Meleagris gallopavo (Aves) ANDREW, Miss. A. M.Sc. — Dept. of Anat, Univ. of the Witwatersrand, Milner Park, JOHANNESBURG, South Africa a. Relationship between enterochromaffin cells and the neural crest. Gallus domesticus (Aves) ANDREW, W. Ph.D. M.D. — Dept. of Anat., School of Med., Indiana Univ., 1100 West Michigan Street, INDIANAPOLIS 7, Ind., U.S.A. (no embryological work in progress) ANTEUNIS, Miss A. H. J. D.Sc. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1, GENT, Belgium a. Ultra-structure of the egg. Artemia salina (Phyllopoda, Crustacea) ANTON, H. J. Dr. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KoLN- Lindenthal, Deutsche Bundesrepublik a. Autoradiographische Untersuchungen der Regenerationsprozesse. (Uro- dela) b. Unvertraglichkeitsreaktionen bei heteroplastischen Transplantationen. Triturus vulgaris, T. cristatus, T. alpestris (Urodela) AOTO, T. M.Sc, D.Sc. — Dept. of Zool., Fac. of Sci., Hokkaido Univ., North 8, West 5, SAPPORO, Japan a. Morphological and physiological studies on neurosecretion. (Crustacea; Pisces; Amphibia) b. Sex differentiation and gonadal development. (Amphibia) APPELLA, E. M.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Development of isozymes. Mus musculus and other spp. (Mammalia) ARIENS KAPPERS, J. M.D., M.I.I.E., Prof. — Dept. of Anat. and Em- bryol., State Univ., Oostersingel 69, GRONINGEN, Netherlands ARIMA, Sh. Dr.Agr. — Zool. Inst., Fac. of Sci., Nara Women's Univ., Kitauoya-Nishi-Machi, NARA, Japan ARMSTRONG, P. B. B.S., M.D., Prof. — Dept. of Anat., School of Med., State Univ. of New York, 766 Irving Avenue, SYRACUSE 10, N.Y., U.S.A. a. Function in the developing liver. Amiurus nebulosus (Teleostei) b. Behavioral responses in developing embryos. Amiurus nebulosus (Teleos- tei), Amby stoma punctatum (Urodela) ARNDT, E. A. Dr.rer.nat. — Zool. Inst, der Univ. Rostock, Stalinplatz, ROSTOCK, Deutsche Demokratische Republik a. Morphologie, Histochemie und Physiologie der Oogenese von Siiss- wasserformen. (Teleostei) ARSLAN, M. M.Sc — Dept. of Zool., Government College, LAHORE. Pakistan a. Reproduction and development. Funambulus pennanti (Sciuromorpha, Rodentia) ASAYAMA, S. M.Sc, D.Sc, Prof. — Dept. of Biol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a. The effect of steroid hormones upon sex differentiation. Experiments with the method of organ culture. Mus musculus (Rodentia) b. Study on gonad differentiation. Homo sapiens (Primates) 10 ASHLEY, G. T. B.Sc, Ch.B., M.D. — Dept. of Anat.. The University. MANCHESTER 13, England a. Normal and abnormal development of thoracic and pelvic viscera. Various spp. (Vertebrata) b. Development of Nissl granules in the central nuclei of cranial nerves. (Vertebrata) c. Developmental cytology of the ovary. (Vertebrata) ASLING. C. W. A.B., M.A., M.D.. Ph.D. — Dept. of Anat., Univ. of Cali- fornia, BERKELEY 4, Cal., U.S.A. a. Development of face and palate, and congenital defects resulting from maternal pteroylglutamic acid deficiency. Rattus spec. (Rodentia) b. Development of inner ear, and congenital defects resulting from maternal manganese deficiency. Rattus spec. (Rodentia) ASSENMACHER, I. A. D.Med., D.Sci., Prof. — Lab. de Physiol, animale, Fac. des Sci., 31 Rue de l'Universite, MONTPELLIER (Herault), France a. Developpement et physiologie de l'hypothalamus et de l'hypophyse. Anas spec. (Aves) ASTAUROV, B. L. Dr.Biol.Sci., corresp.-member Acad. Sci. U.S.S.R., F.I.I.E., M.Z.S.A., Prof. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Artificial parthenogenesis and experimental polyploidy. Bombyx mod (Lepidoptera) b. Androgenesis, especially interspecific. Bombyx mod, B. mandarina (Lepi- doptera) c. Influence of high temperature on developmental processes; heat de- naturation of proteins. Bombyx mod (Lepidoptera) and many other organisms d. Differential sensitivity of cell nucleus and cytoplasm to ionizing radiation. Bombyx mod (Lepidoptera) e. Induction of amphidiploidy in interspecific hybrids. Bombyx mod, B. mandarina (Lepidoptera) (in collaboration with Miss V. N. VEREJS- KAJA) AUBRY, Miss R. Lic.es Sci. — Lab. de Biol, gener., Inst, de Zool. et de Biol, gener., Fac. des Sci., 12 Rue de l'Universite, STRASBOURG, France a. Etude de la lignee germinale. (Amphibia) b. Etude de l'hermaphroditisme. (Gastropoda) AUERBACH, R. Ph.D. — Dept. of Zool., Univ. of Wisconsin, Birge Hall, MADISON 6, Wis., U.S.A. AUROUX, M. Dr. en Med. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Developpement normal et anormal de l'encephale. Mus rattus (Rodentia) AUSTIN, C. R. B.V.Sc, D.Sc, M.I.I.E. — Nat. Inst, for Med. Research, Mill Hill, LONDON N.W. 7, England a. Investigations on gametes, fertilization and early development. (Mam- malia) AUTELIN, Miss R. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Etude des proprietes du permeabilite du cortex de l'oeuf. (Amphibia) (en collaboration avec A. DOLLANDER) 11 Ave-Bar AVEL, M. Dr., F.I. I.E., Prof. — Lab. de Biol. Gener., Fac. des Sci. de Bor- deaux, 40 Rue Lamartine, TALENCE (Gironde), France AVERKINA, R. F. Dr. — Inst, of Exper. Biol, of the Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. a. Development of antigens in early embryos. (Amphibia; Aves) AZOUBEL, R. M.D. — Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, SAO PAULO, Brazil BABB, J. D. B.A. — Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. Study of propagation of inductive influences through folds of competent ectoderm, implanted into the neural plate region, by means of time-lapse microcinematography. (Urodela) BACKHOUSE, K. M. M.B., B.S. — Dept. of Anat., Charing Cross Hosp. Med. School, 62-65 Chandos Place, LONDON W.C. 2, England a. Gubernaculum testis and testicular descent. (Mammalia) b. Early embryology and implantation. Halichoerus grypus (Pinnipedia) c. Implantation of the blastocyst. (Mammalia) BACKSTROM, S. A. A. Fil.dr. — Wenner-Gren's Insc. for exper. Biol., Norrtullsgatan 16, STOCKHOLM Va., Sweden a. Characterization of reduction gradients. (Echinoidea) b. Activity of glucose-6-phosphate dehydrogenase and of glucose-6-phos- phatase during development. (Echinoidea), Xenopus laevis (Anura), Gallus spec. (Aves) BADINEZ, O. M.D., Prof. — Catedra de Embriol., Escuela de Med., Univ. de Chile, Zanartu 1042, SANTIAGO, Chile a. Histochemical studies on mucopolysaccharides in early stages of develop- ment. Calyptocephalella gayi, Bufo espinosus (Anura), Gallus spec. (Aves), Mus spec. (Rodentia) BAEVSKY, J. B. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Retardation of embryo development and state of maternal endocrine glands during the embryonic diapause. Mattes zibellina, Mustela vison (Carnivora) , Rattus norvegicus (Rodentia) BAFFONI, G. M. Dr.Biol.Sci. — 1st. di Anat. comp., Fac. di Sci., Univ. di Modena, Via Universita 4, MODENA, Italia a. Growth and differentiation of the nervous cell. Lampetra spec. (Cyclos- tomata), Trutta spec, Brachydanio spec. (Teleostei) , Rana spec, Bufo spec, Xenopus spec, Bombina spec, Triturus spec. (Amphibia) , Colum- ba spec, Gallus spec. (Aves), Felis spec, Mus spec, Rattus spec. (Mammalia) b. Mitotic ratio in the larval central nervous system. Bufo bufo, Triturus cristatus (Amphibia) c Chromatoid bodies, heterochromosomes and sex-chromatin. Potamon flu- viatile, Callianassa tyrvhena, Eupagurus prideauxii (Decapoda, Crus- tacea) BAGINSKA (BORSUK), Mrs. I. M.D. — Inst, of Histol. and Embryol., Acad, of Med., Narutowicza 60, L6DZ, Poland a. Investigations of experimentally provoked monstruosities. Gallus spec. (Aves), (Mammalia) BAGINSKI, S. M.D. — Inst, of Histol. and Embryol., Acad, of Med., Na- rutowicza 60, L6DZ, Poland 12 a. Investigations of experimentally provoked monstruosities in embryos. Gallus spec. (Aves) b. Influence of azo-dyes on the development of embryos. Gallus spec. (Aves) c. Influence of isotopes on the development of embryos. Gallus spec. (Aves) BAGNARA, J. T. B.A. Ph.D. — Dept. of Zool., Univ. of Arizona, TUC- SON, Arizona, U.S.A. a. Various aspects of the development and endocrinology of pigmentation. Many spp. (Amphibia) b. Electron microscopy of inductor systems. Gallus domesticus (Aves) BAKER, Miss B. I. B.Sc. — Dept. of Zool., Bedford Coll., Regent's Park, LONDON N.W. 1. England a. Development of pituitary. Herichthys cyanoguttatus (Cichlidae, Te- leostei) b. Cellular activity of the pituitary intermediate lobe, flower Vertebrata) BALINSKY, B. I. Dr.Biol.Sci., F.I.I.E., Prof. — Dept. of Zool., Univ. of the Witwatersrand, Milner Park, JOHANNESBURG, Republic of South Africa a. An electron microscopic study of early development. (Anura) BALON, E. K. prom.biol., C.Sc. — Lab. of Fishery Science, Zelezna Stu- dienka 806, BRATISLAVA, Czechoslovakia a. Development of ossification. Esox lucius (Teleostei) b. Embryology and eco-morphology. Alburnus albuvnus, R. rutilus carpa- thorossicus and their hybrids (Teleostei) c. Further studies on development. Tilapia spec. (Cichlidae, Teleostei) d. Normal and hybrid development. ( Acheilognathinae , Teleostei) (in collaboration with J. J. DUYVENfi DE WIT, Bloemfontein, S. Africa) BALTUS, Miss E. }. Dr. en Sci. — Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auderghem, Bel- gique a. Study on isolated nucleoli. Asterias rubens ( Asteroidea, Echinodermata) BALTZER, F. Dr., Dr.h.c. Strassb., Dr.h.c. Freiburg (Baden), F.I.I.E., Prof. (Emer.) — Zool. Inst, der Univ. Bern, Sahlistr. 8, BERN, Schweiz BANARJEE, M. — Cell Research Unit, Dept. of Zool., Calcutta Univ., 35 Ballygunje Circular Road, CALCUTTA 19, India BANARJEE, P. — Cell Research Unit, Dept. of Zool., Calcutta Univ., 35 Ballygunje Circular Road, CALCUTTA 19, India BANERJEE, B. M.Sc. — Dept. of Biol., Scottish Church Coll., 4 Corn- wallis Square, CALCUTTA 6, India BANERJEE, S. M.Sc. — Dept. of Zool., Presidency Coll., College St., CAL- CUTTA 12, India a. Physiology of cell-contact. (Porifera) (in collaboration with B. GAN- GULY, D. LAHIRI and S. MOOKERJEE) BANTOCK, C. R. B.A. — Dept. of Zool. and Comp. Anat., Univ. Museum. OXFORD, England BARASA, A. — 1st. di Anat. veter., Via Nizza 52, TORINO, Italia a. Morphogenetic processes of the wing following removal of some parts. Gallus domesticus (Aves) b. Mitochondria and lipochondria in cells cultured in vitro. Gallus domesticus (Aves) 13 Bar-Bee BARBIERI, F. D. Dr. — Inst, de Biol. Gener. y Embriol. Exper., Casilla de Correos 193, TUCUMAN, Argentina a. Cytochemical effects of ultraviolet radiation on the developing embryo. Gallus spec. (Aves) b. Mitochondria and lipochondria in cells cultured in vitro. Gallus domesticus (Aves) c. Sulfhydril groups, deoxyribonucleic acids and glycogen in early devel- opment. Bufo arenarum (Anura) BARBIN, Y. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Chorde dorsale. Homo sapiens (Primates) BARIGOZZI, C. Dr.Sci., M.I.I.E., Prof. — 1st. di Genet., Univ. di Milano, Via Celoria 10, MILANO, Italia a. Development of melanomes with different genotypes. Drosophila spec. (Diptera) BARNETT, C. H. — Dept. of Anat., St. Thomas' Hosp. Med. School, LON- DON S.E. 1, England BARTELMEZ, G. W. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Blood supply of uterus. Macaca mulatta (Primates) b. Early development of optic vesicle. (Rodentia; Primates) c. Earliest development of oral hypophysis. (Primates) d. Effects of r u b e 1 1 a on foetus. Homo sapiens (Primates) BARTH, L. G. A.B., Ph.D., F.I.I.E., Prof. — Dept. of Zool., Columbia Univ., Broadway and 116th St., NEW YORK 27, N.Y., U.S.A. BARTH, Mrs. L. JAEGER A.B., M.A., Ph.D. — Dept. of Zool., Columbia Univ., Broadway and 116th St., NEW YORK 27, N.Y., U.S.A. BATTAGLIA, B. Sc.D. — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Loredan 10, PADOVA, Italia a. Sex differentiation. (Harpaticoida, Copepoda) b. General embryology. (Harpaticoida, Copepoda) BATTLE, Miss H. I. Ph.D., Prof. — Dept. of Zool., Univ. of Western Ontario, LONDON, Ont, Canada a. Effects of purines and purine antagonists on early developmental pro- cesses. Salmo trutta fario, Brachydanio rerio (Teleostei) b. Effects of aminopterin on early developmental processes. (Teleostei) c. Effects of vital dyes on early developmental processes. Salmo trutta fario, Brachydanio rerio (Teleostei) BAUD, C. A. Dr.med., Prof. — Inst, de Morphol., Fac. de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENfiVE, Suisse BAUMANN, J. A. Dr., Prof. — Inst. d'Anat., Fac. de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GEN£VE, Suisse a. Developpement du systeme nerveux. (Mammalia) BAUTZMANN, H. Dr.med., M.I.I.E., o.Prof. — Anat. Inst, der Univ., U.K.E., Martinistr. 52, HAMBURG 20, Deutsche Bundesrepublik a. Entwicklungsphysiologie der Primitiventwicklung. (Vertebrata, bes. Amphibia) b. Vergleichende Histofunktion, Histogenese und Histophysiologie der Amnioneinrichtungen. Gallus domesticus (Aves), (Reptilia), Dasypus spec, Felis domestica (Mammalia) 14 c. Fruchthtillenmotorik und Motorik des Embryo. (Evertebrata; Vertebrata) d. Elektronenmikroskopie der Amnioneinrichtungen. Gallus domesticus (Aves), (Reptilia), Dasypus spec, Felis domestica (Mammalia) BAVAY, J. M. F. X. de B.Sc. — Dept. of Zool., Univ. of New England, ARMIDALE 5 N., N.S.W., Australia a. Normal embryology. Kyarranus sphagnicolus ( Leptodactylidae, Anuta) BAXTER, E. W. B.Sc, Ph.D. — Biol. Dept., Guy's Hosp. Med. School, LONDON S.E. 1, England a. Biology, including development and metamorphosis. Petromyzon spec (Cyclostomata) b. Food changes during larval period of growth. Ammocoetes (Cyclosto- mata) c Uptake and fate of "Thorotrast". Ammocoetes (Cyclostomata) d. Effects of the anaesthetic M.S. 222-Sandoz. Lampetra planeri (Cyclosto- mata) BEAM, J. R. M.B., B.S. — Anat. Dept., Middlesex Hosp. Med. School, LONDON W. 1, England BEARN, J. R. — Dept. of Biol, as Applied to Med., Middlesex Hosp. Med. School, Cleveland St., LONDON W. 1, England a. Physiology of foetal and newborn kidney. Rattus rattus (Rodentia) (in collaboration with F. T. C. HARRIS) BEATTY, R. A. B.A., M.A., Ph.D., M.I.I.E. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDIN- BURGH 9, Scotland a. Breeding of genetically tagged strains for use in experimental embryology. Oryctolagus cuniculus (Lagomorpha) b. Heterospermic insemination and growth of embryo. Oryctolagus cunicu- lus (Lagomorpha) c Developmental biology and genetics of gametes. Mus musculus (Roden- tia) , Oryctolagus cuniculus (Lagomorpha) BEAUDOIN, A. R. — Dept. of Anat., Med. School, Univ. of Michigan, 2500 East Med. Bldg., ANN ARBOR, Mich., U.S.A. BECKER, U. Dr.rer.nat. — Heiligenberg-Inst., (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepublik a. Experimente zur Analyse der Induktionsstoffe. (Amphibia) b. Zelldetermination in der Gewebekultur. (Amphibia) c Linsenentwicklung. (Amphibia) BEDNJAKOVA, Mrs. T. A. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Influence of high temperatures on developmental processes. Bombyx mori ( Lepidoptera) b. Analysis of sterilizing effect of sublethal high temperature on eggs infected with Nosema bombycis. Bombyx mori (Lepidoptera) (in collab- oration with Miss V. N. VEREJSKAJA) c Action of DNA on morphogenesis. Bombyx mori (Lepidoptera) (in col- laboration with Mrs. G. P. RAMENSKAJA) BEERMANN, W. Dr., M.I. I.E., Prof. — Max Planck Inst, fur Biol., Spe- mannstr. 34, TUBINGEN, Wiirttemberg, Deutsche Bundesrepublik BEESON, Mis G. E. B.A. — Dept. of Zool. and Comp. Anat., Univ. Mu- seum, OXFORD, England 15 Bee-Ber BEETSCHEN, J. CI. Dr.es Sci. — Lab. de Biol, gener., Fac. des Sci., 39 Allees Jules Guesde, TOULOUSE (Hte-Gne), France a. Recherches cytologiques, embryologiques et genetiques sur l'heteroploidie experimentale. (Amphibia) b. Hybridation interspecifique. (Amphibia) c. Alterations de la morphogenese dans la descendance aneuploide des individus triploides. Pleurodeles waltlii (Urodela) d. Anomalies de la mitose et de la meiose chez les individus haploi'des, triploides et aneuploides. Pleurodeles waltlii (Urodela) e. Etude autoradiographique du metabolisme des germes heteroploides letaux. Pleurodeles waltlii (Urodela) BELKA-GRZYBEK, A. Mgr. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. Restoration of the surrenal gland after experimental injury. Mus musculus (Rodentia) b. Transplantation of the ovary. Mus musculus (Rodentia) c. Cytological and histochemical investigations on the regenerating tail. Xenopus laevis (Anura) BELL. E. B.A., M.So, Ph.D. — Dept. of Biol., Massachusetts Inst, of Technol., CAMBRIDGE 39, Mass., U.S.A. a. Relationship of ectoderm to mesoderm in limb development. Gallus gallus (Aves) b. Differentiation and morphogenesis of embryonic skin cells returned to an embryonic environment after growth in vitro. Gallus gallus (Aves) c. Biochemical and biophysical analysis of keratin synthesis in the develop- ment of skin and feathers. Gallus gallus (Aves) d. Studies on cloning embryonic cells. Gallus gallus (Aves) 1. Survival as a function of method of dissociation. 2. Cell selection as a function of substrate. 3. Differentiation as a function of critical mass. e. Growth and differentiation of embryonic central nervous system grown in vitro from dissociated cells or tissue fragments. Gallus gallus (Aves) f. Ultrasound as a tool in experimental embryology. BELL, L. G. E. B.Sc, Ph.D., A.R.I.C. M.I. Biol. — Dept. of Zool., King's Coll., Strand, LONDON, W.C. 2, England a. Descriptive, experimental and physiological embryology. Ciona intestina- lis (Ascidiae), Xenopus laevis (Anura) BELLAIRS, A. d'A. D.Sc. — Dept. of Anat., St. Mary's Hosp. Med. School, LONDON W. 2, England a. Morphogenesis of skeleton. (Reptilia; Aves: Mammalia) b. Embryonic membranes. (Reptilia) BELLAIRS, Mrs. M. R. B.Sc, Ph.D., M.I.I.E. — Dept. of Anat. and Em- bryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. An electron microscopical study of area opaca and yolk-sac. Gallus do- mesticus (Aves) b. An electron microscopical study of the vitelline membrane. Gallus domes- ticus (Aves) BELOFF, Mrs. R. HIRSCH B.A., Ph.D. — Dept. of Pathol., School of Med., Yale Univ., 310 Cedar St., NEW HAVEN, Conn., U.S.A. 16 BENAZZI, M. M.I.I.E., Prof.ord. — 1st. di Zool. e Anat. comp. dell' Univ., Via A. Volta 4, PISA, Italia a. Fertilization, pseudogamy, polyploidy and heredity. (Tricladidea, Tur- bellaria) b. Hybrids. Ttiturus vulgarus x T. cristatus, T. italicus and T. helveticus (Urodela) c. Action of X-rays on development. (Planariidae, Turbellaria) BENAZZI (LENTATI), Mrs. G. — 1st. di Zool. e Anat. comp. dell' Univ., Via A. Volta 4, PISA, Italia a. Ovo- and spermatogenesis; fertilization and cytology. (Tricladidea, Turbellaria) BENDER, H. A. A.B., M.S., Ph.D. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. U.S.A. a. Studies of the ovarian tissue in pseudoallele mutations affecting fertility. Drosophila melanogaster (Diptera) BENGMARK, S. — Dept. of Anat., Univ. of Goteborg, GoTEBORG SV, Sweden a. Derivation of prostatic gland. Homo sapiens, Rattus spec. (Mammalia) BENIRSCHKE, K. M.D. — Dept. of Pathol., Dartmouth Med. School, HANOVER, N.H., U.S.A. a. Study of fetal adrenal development. Dasypus novemcinctus (Edentata), Oedipomidas oedipus (Primates) b. Chromosome studies. Dasypus novemcinctus (Edentata) BENNETT, Miss. D. Ph.D. — Dept. of Zool., Columbia Univ., Broadway and 116th St., NEW YORK 27, N.Y., U.S.A. a. Effects of lethal mutant alleles at the T-locus, studied morphologically, in tissue culture, and with paper chromatography. Mus musculus (Ro- de ntia) BENOIT, J. Dr. en Med., Dr. es Sci., Prof . — Lab. d'Histophysiol, Coll. de France, 4 Avenue Gordon Bennet, PARIS 16e, France BENOIT, J. A. A. M.I.I.E. — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Etude de la chronologie et du mecanisme de l'induction du cartilage otique. Gallus gallus (Aves) BER, A. Dr., Prof. — Beilinson Hospital, PETAH-TIKVA, Israel a. Development of eye reaction to vitamin Bt. Hyla spec, Bufo spec. (Anura) BERG, G. G. Ph.D. — Dept. of Radiation Biol., School of Med. and Dent., Univ. of Rochester, P.O. Box 287, Sta. 3, ROCHESTER 20, N.Y., U.S.A. a. Developmental and adaptive changes in enzymes (trimetaphosphatase, polyphosphatase) in the embryonic digestive tract and extraembryonic membranes. Gallus gallus (Aves), Mus musculus alb. (Rodentia) BERG, W. E. Ph.D., M.I.I.E., Prof. — Dept. of Zool., Univ. of California, BERKELEY 4, Cal., U.S.A. BERGQUIST, H. Ph.D., M.I.I.E. — Zool. Inst., Univ. of Gothenburg, Fjar- de Langgatan 7B, G5TEBORG-SV, Sweden a. Experimental investigations on the neural tube. (Vertebrata) b. Ultramicroscopical investigations on the integument. Homarus vulgaris (Crustacea) 17 Ber-Ble HERMANN, F. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France. 1 1 Place Marcelin Berthelot. PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Recherches sur les heterogreffes embryonnaires, la compatibility et les affinites des tissus embryonnaires en association xenoplastiques. Gallus gallus (Aves), Mus musculus albinus (Rodentia) BERNSTEIN, G. S. B.A., M.A., Ph.D. — Dept. of Pharmacol., School of Med., Univ. of Southern California, LOS ANGELES, Cal., U.S.A. a. Life-span, motility and metabolism of spermatozoa. (Echinodermata; Amphibia; Mammalia) b. Physiology of fertilization. (Amphibia) BERRILL, N. J. Ph.D., D.Sc, F.R.S., Prof. — Dept. of Zool., McGill Univ., MONTREAL, Quebec, Canada BERTMAR, G. Fil.Dr. — Zool. Inst., Univ. of Stockholm, 70A Radmans- gatan, STOCKHOLM, Sweden a. Development and morphology of the skeleton of the head. (Characidae, Teleostei) BERTOLINI, B. Dr.Biol.Sci. — 1st. di Anat. comp. "G. B. Grassi", Fac. di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia a. Histochemistry of developing nervous system. Triturus spec. (Urodela), Gallus spec. (Aves) BETCHAKU, T. — Dept. of Zool, Wabash Coll., CRAWFORDSVILLE, Ind., U.S.A. BEYLSTEIN, J. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Developpement du coeur. ( Aves) BIEBER, S. B.A., M.S., Ph.D. — Section of Biol., The Wellcome Research Labs., TUCKAHOE 7, Westchester County, N.Y., U.S.A. a. Nucleic acid metabolism during gametogenesis, embryogenesis and regen- eration; studies carried out with aid of analogues of purines and pyri- midines, and with radioisotope-labeled nucleic acid derivatives. Rana pipiens (Anura) BIELANSKA (OSUCHOWSKA), Mrs. Z. Dr., Prof. — Inst, of Histol. and Embryol., Veter. Fac, ul. Grochowska 272, WARSZAWA, Poland a. Histochemical studies on differentiation of gonads. Sus domestica (Ar~ tiodactyla) b. Histochemical studies on oogenesis and embryonic development. Cordy- lophora lacustris (Hydroidea) BIELIAVSKY, N. Lie. en Sci. Zool. —Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auderghem. Belgique a. Reagregation d'embryons dissocies. Ambystoma mexicanum, Pleurodeles Waltlii, Rana tempotatia (Amphibia) BIER, K. Dr. rer. nat. — Zool. Inst, der Univ. Wiirzburg, Rontgenring 10, WORZBURG, Deutsche Bundesrepublik a. Cytologisch-histochemische Untersuchungen iiber das Wachstum der Oocyten in Beziehung zur Embryonal- und Postembryonalentwicklung. Formica polyctena (Hymenoptera), Calliphora erythrocephala (Diptera) 18 b. Autoradiografische Untersuchungen iiber unterschiedliche Reproduk- tionsraten im Eu- und Heterochromatin als Weg zur Kerndifferenzierung. Musca domestica (Diptera) BIJELIC, N. — Inst, de Biol., Fac. de Med., Salata, ZAGREB, Yougoslavie a. Analysis of early embryonic development by means of X-rays. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB) BIJTEL, Miss J. H. Dr.Sci., M.D.. M.I.I.E. — Dept. of Anat. and Embryol., State Univ., Oostersingel 69, GRONINGEN, Netherlands a. Experiments concerning the factors which determine the normal course of the outgrowing pronephric duct. Ambystoma mexicanum, Ttiturus taeniatus, Xenopus laevis (Amphibia) b. Development and phylogenetic origin of the columella auris. Ambystoma mexicanum, Triturus taeniatus, Xenopus laevis (Amphibia) c. Development of the naso-lacrimal duct. Xenopus laevis (Anura) d. Development of the naso-lacrimal duct. Mus musculus albinus (Rodentia) BILEWICZ, S. Dr.phil., Prof. — ZaHad Embriol. U.W., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a. Experimental study on the genesis of superfoetation. Mus musculus alb. (Rodentia) b. Experimental study on the mechanism of development of various types of double monsters. Gallus domesticus (Aves) BILLETT, F. S. B.Sc, Ph.D. — Dept. of Biol, as Applied to Med., Middle- sex Hosp. Med. School, Cleveland St., LONDON W. 1, England a. Morphogenetic effects of desoxyribonucleic acid. Ambystoma mexicanum, Xenopus spec. (Amphibia) b. Effect of "anti-metabolites" on early development. Gallus spec. (Aves) BILLINGHAM, R. E. M.A.. Ph.D., D.Sc — Wistar Inst., 36th St. at Spruce, PHILADELPHIA 4. Pa., U.S.A. BISHOP, D. W. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Contractile protein and contractile mechanisms of spermatozoa. (Mam- malia) b. Development of immunologic capacity. Cavia spec. (Rodentia) c. Immunologic impairment of spermatogenesis. Cavia spec. (Rodentia) BISHOP, M. W. H. M.A., Ph.D. — Roy. Veter. Coll., Royal College St., LONDON N.W. 1, England a. Investigations on gametes, gametogenesis, fertilization and early devel- opment. (Mammalia) BLACK, R. E. L. B.A., Ph.D. — Dept. of Embryol., Div. of Biol., California Inst, of Technol., PASADENA 4, Cal., U.S.A. a. Antigens in marine embryos. ( Echinodermata) b. Metabolism of marine embryos. (Gephyrea, Echinodermata) BLACKLER, A. W. C. M.Sc, Ph.D. — Inst, de Zool. et Anat. comp., Univ. de Geneve, Rue de Candolle, GENEVE, Suisse BLANDAU, R. J. Ph.D., M.D. — Dept. of Anat., School of Med., Univ. of Washington, SEATTLE 5, Wash., U.S.A. a. Mechanisms of ovulation. b. Mechanisms of implantation. c. Tissue culture of granulosa cells. BLECHSCHMIDT, E. Dr.med., o.o.Prof . — Anat. Inst, der Univ., Kreuz- bergring 36, GOTTINGEN, Deutsche Bundesrepublik 19 Bio-Bos BLOCK, M. H. Ph.D., M.D. — Univ. of Colorado Med. Center, 4200 E. 9th Ave., DENVER 20, Colo., U.S.A. a. Development of blood-forming tissues. Didelphys virginiana (Marsu~ pialia) b. Effect of irradiation on development of blood-forming tissues. Didelphys virginiana (Marsupialia) c. Iron metabolism of blood-forming tissues. Didelphys virginiana (Mar- supialia) d. Wound healing of blood-forming tissues. Didelphys virginiana (Marsu- pialia) BLOUNT, R. F. B.A., M.S., Ph.D., M.I.I.E., Prof. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex., U.S.A. BLUEMINK, J. G. M.Sc. — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands a. The mechanism of the uptake of egg capsule fluid by pinocytosis. Limnaea stagnalis (Gastropoda) BLUNTSCHLI, H. Dr., F.I.I.E., Prof. (Emer.) — Anat. Inst., Buhlstr. 26, BERN, Schweiz (no embryological work in progress) BODEMER, C. W. B.A., M.A., Ph.D. — Dept. of Anat., School of Med., Univ. of Washington, SEATTLE 5, Wash., U.S.A. BODENSTEIN, D. Ph.D., M.I.I.E., Prof. — Dept. of Biol, Univ. of Vir- ginia, CHARLOTTESVILLE, Va., U.S.A. a. Nerve regeneration. Periplaneta americana (Orthoptera) b. Intergeneric grafts of organ discs. (Diptera) c. The role of the prothoracic gland in postembryonic development. Peri- planeta americana (Orthoptera) BOELL, E. J. Ph.D., M.A., D.Sc, M.I.I.E. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Enzymatic changes in mitochondria during development. (Amphibia; Aves) b. Enzyme development in the central nervous system. (Amphibia; Aves) c. Functional differentiation of respiratory structures. (Amphibia) d. Ion uptake by the larval gills. Ambystoma punctatum (Urodela) BOERSMA, W. Med.Drs. — Anat.-Embryol. Lab., State Univ., Janskerk- hof 3A, UTRECHT, Netherlands a. Induction of the crystalline lens: in vitro and in vivo experiments. Gallus domesticus (Aves) BOK, S. T. Dr., Prof. — Netherlands Central Inst, for Brain Research, Mauritskade 59B, AMSTERDAM O., Netherlands BOLOGNARI, A. 1st. di Zool., Univ. di Messina, MESSINA, Italia a. Ricerche sull'ovogenesi. Particolari osservazioni sul nucleolo mediante il microscopio ottico ed elettronico. Haliotis lamellosa, Aplysia depilans, Patella coerulea (Gastropoda), Mytilus galloprovincialis (Lamelli- branchia) b. Ricerche al microscopio ottico e al microscopio elettronico sulla vitello- genesi. Haliotis lamellosa, Aplysia depilans. Patella coerulea (Gastro* poda), Paracentrotus lividus, Sphaerechinus granulans, Arbacia lixula (Echinoidea) c. Studio citologico comparativo fra ovociti in accrescimento e cellule tumorali. (Mollusca et Echinodermata; Mammalia) 20 BONDI, C. Dott., Prof. — 1st. di Biol, gen., Fondazione Agraria, S. Pietro. PERUGIA, Italia a. Rigenerazione. Planaria lugubris (Turbellaria) b. Trapianti xenoplastici e differenziazione. Triturus spec, Rana spec. (Amphibia) c. Morfogenesi dell'intestino. Bufo spec, Rana spec. (Anura) BONICHON, Miss A. Lie es Sci. — Inst, de Physiol. Gener., 15 Place Carnot, NANCY (Meurthe & Moselle), France a. Recherches experimentales sur le developpement cytochimique des lobes optiques. Gallus domesticus (Aves) (en collaboration avec J. F. GAYET) BONNER, J. T. Ph.D., M.I.I.E. — Dept. of Biol., Princeton Univ., Box 704, PRINCETON, N.J., U.S.A. a. Problems of morphogenetic movements and differentiation. (Acrasiales) BOOKHOUT, C. G. A.B., M.A., Ph.D., Prof. — Dept. of Zool., Duke Univ., DURHAM, N.C., U.S.A. a. The development 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. Marphysa regalis (Polychaeta) b. Larval development and the effect of variations in temperature, salinity, and diet on molting frequency and time of development. Balanus spp. (Cirripedia, Crustacea) c. Effects of various temperatures and salinities on molting frequency, larval stages and metamorphosis. Ilea pugilator, Callinectes sadipus, Libinia dubia, Sesarma cinerea, Panopeus herbstii, Eurypanopeus deptessus (Decapoda, Crustacea) BORDEN, J. v. d. — Div. of exp. Morphol., Anat.-Embryol. Inst., Municipal Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O., Netherlands a. Experiments designed to test relations of inhibitors of embryonic devel- opment to the effect of X-rays. Amby stoma mexicanum (Urodela), Mus spec. (Rodentia) (in collaboration with H. A. L. TRAMPUSCH) BORGHESE, E. M.D., Dr. Biol. Sci. , M.I.I.E., Prof. — 1st. di Anat. Umana Normale, Via Porcell 2, CAGLIARI, Italia — Div. Biol, del C.N.E.N., Sincrotrone, FRASCATI (Roma), Italia a. Culture in vitro of embryonic organs. Mus muscutus (Rodentia) BORSTEL, R. C. von Ph.D. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. a. An analysis of eye pigmentation during the later stages of embryonic development. Habrobracon spec. (Hymenoptera) b. An analysis of times of death of haploid embryos when different sections of the genome are removed. Habrobracon spec. (Hymenoptera) c. A study of the time of death of embryos from eggs laid by aged females. Habrobracon spec. (Hymenoptera) d. The nature of deoxyribonucleic acid occurring free in the cytoplasm of the newly laid egg. Habrobracon spec. (Hymenoptera) BOSCHWITZ, Miss B. D. M.Sc, Ph.D. — Dept. of Zool., Hebrew Univ., JERUSALEM, Israel BOSE, A. M.Sc, D.Phil. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Delayed incubation of irradiated eggs. (Aves) 21 Bose-Bri b. Effect of high voltage electric current on morphogenesis. Gallus gallus (Aves) ROSE, B. — Cell Research Unit, Dept. of Zool., Calcutta Univ., 35 Ballygun- je Circular Road, CALCUTTA 19, India BOSINELLI, Miss L. Dr.Nat.Sci. — 1st. di Anat. Comp., Via Belmeloro 8, BOLOGNA (103), Italia a. Thymus, metabolism and protein during metamorphosis. Rana esculenta, R. catesbyana, Bufo bufo (Anura) b. Evolution and involution of thymus. Rana esculenta, R. catesbyana, Bufo bufo (Anura), Amby stoma mexicanum (Urodela) BOTERENBROOD, Miss E. C. M.Sc. — Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. Organization of prosencephalic structures after dis- and re-aggregation of the prosencephalic part of the neural plate. Triturus alpestris, Pleuro- deles Waltlii (Urodela) BOUILLON, J. Dr. — Lab. de Zool. syst. et de Biol, anim., Fac. des Sci., Inst. Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt, BRUXELLES, Belgique a. Morphologic embryologie, histologic et ultrastructure (microscopie elec- tronique) des formes marines. (Hydroidea) BOUNOURE, L. Prof. — Lab. de Biol, gener., Inst, de Zool et de Biol. gener., Fac. des Sci., 12 Rue de l'Universite, STRASBOURG, France a. Initial development: primordial germ-cells, development of gonads. (Am- phibia) BOVING, B. G. A.B., M.D., M.I. I.E. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Blastocyst spacing, orientation and implantation mechanisms. Oryctola- gus cuniculus (Lagomorpha) b. Relation of trophoblast invasion to bloodvessels underlying uterine epi- thelium, and the anatomical and chemical basis for it. Oryctolagus cuniculus (Lagomorpha) c. Identification and function of non-cellular blastocyst coverings. Oryctola- gus cuniculus (Lagomorpha) BOYD, J. D. M.A., M.Sc, M.D., F.I.I.E., Prof. — Anat. School, Univ. of Cambridge, CAMBRIDGE, England a. The development and structure of the placenta. Homo sapiens (Primates) (in collaboration with W. J. HAMILTON, London) BOYDEN, E. A. Ph.D., Prof.— (Emer. Prof.) Inst, of Anat., School of Med., Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. — (Research Prof.) Med. School, Univ. of Washington, SEATTLE 5, Wash., U.S.A. a. Postnatal growth of the lungs (from late fetal stage to adult). Canis spec. (Carnivora), Homo sapiens (Primates) BRACHET, J. L. A. M.D., D.Sc, F.I.I.E., Prof. — Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES- Auderghem, Belgique a. Studies on the metabolism of lethal hybrids. (Amphibia) b. Role of -SH groups in morphogenesis. (Amphibia) c. Role of ATP and ATP-ase in morphogenesis. (Amphibia; Aves) d. Effects of lipoic acid on morphogenesis. (Amphibia; Aves) 22 BRADEN, A. W. H. M.Sc, Ph.D. — Div. of Animal Physiol., C.S.I.R.O., Ian Clunies Ross Animal Research Lab., Great Western Highway, (P.O. Box 144, Parramatta), PROSPECT, N.S.W., Australia a. Fertilization; interaction between sperms; genetic differences in the physiology of the gametes. Mus musculus (Rodentia), Ovis spec. (Attio- dactyla) b. Effect of age of gametes on development. Ovis spec, Rattus norvegicus, Oryctolagus cuniculus (Mammalia) BRAHMA, S. K. M.Sc, D.Phil., Ph.D. — Chittaranjan Nat. Cancer Res. Center, 37 S. P. Mookerjee Road, CALCUTTA 26, India a. Normal tables. Rana tigtina, Bufo melanostictus (Anura) b. Reactivity of ectoderm to evocating substances. (Anura) c Effects of -SH and SH-inhibitors on development. (Amphibia), Gallus spec. (Aves) (in collaboration with R. K. NEOGY) BRAMBELL, F. W. R. B.A., Ph.D., D.Sc, F.R.S., F.I.I.E., Prof. — Agr. Res. Council Unit of Embryol., Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caernarvonshire, Wales a. Immunological relations of mother and young. (Mammalia) BRANDOM, W. F. A.B., M.A., Ph.D. — Dept. of Zool., Newcomb Coll., Tulane Univ., NEW ORLEANS 18, Louisiana, U.S.A. a. Combined heteroploidy and hybridization; chromosome number; gene- dosage studies in polyploid hybrids; tissue and organ architecture in heteroploids; the origin of, and routes to, heteroploidy; species pigment pattern formation; the karyo-plasma problem. Taricha spec. (Urodela) b. Interspecific and intergeneric diploid hybridization; studies of the early arrest of development in diploid intergeneric hybrids. Taricha spec, Diemictylus spec. (Urodela) c Histochemistry of lethal hybrid embryos. Taricha spec, Diemictylus spec, Triturus spec. (Urodela) BRAUCKMAN, Miss E. S. — Inst, de Biol. Gener. y Embriol. Exper., Casilla de Correos 193, TUCUMAN, Argentina — temporarily: Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Sulfhydryl groups during neural tube closure. Gallus domesticus (Aves) b. Biochemistry of neural tube closure. Bufo arenarum (Anura), Triturus spec. (Urodela) c Effect of -SH groups on morphogenesis. Triturus alpestris, Xenopus laevis (Amphibia) BRETSCHNEIDER, L. H. Dr., Prof. — Centrum voor Electronenmicrosco- pie, Janskerkhof 3, UTRECHT, Netherlands BREWIN, Miss B. I. M.Sc, D.Sc. — Dept. of Zool., Univ. of Otago, DUNEDIN, New Zealand a. Embryology and life history of a truly viviparous compound form. Hyp~ sistozoa fasmeriana (Ascidia) b. The development of larval buds. Hypsistozoa fasmeriana (Ascidia) c Development of colonial buds. Hypsistozoa fasmeriana (Ascidia) BRIEN, P. L. Dr.Sci.Zool., F.I.I.E., Prof. — Lab. de Zool. syst. et de Biol, anim., Fac des Sci., Inst, de Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt, BRUXELLES, Belgique a. Determinisme de la gametogenese. Hydra spp. (Hydroidea) b. Formation et signification des sacs gazeux. (Dipnoi) 23 Brien-Biiy c. Formation et signification des ecailles. (Osteopterygii) d. Embryogenese. Protopterus dolloi (Dipnoi) BRIGGS, R. W. Ph.D., F.I.I.E., Prof. — Dept. of Zool., Indiana Univ., BLOOMINGTON, Ind., U.S.A. a. Studies on nuclear differentiation in embryos. Rana pipiens (Anura) (in collaboration with Th. J. KING, Philadelphia, Pa.) fBROEK, A. J. P. v. d. F.I.I.E., Prof. (Emer.) — Biltstraat 109, UTRECHT, Netherlands (deceased) BR0NDSTED, H. V. Dr.Phil., F.I.I. E., Prof. — Inst, for Aim. Zool., Uni- versitetsparken 3, COPENHAGEN 0, Denmark BROOKBANK, J. W. B.A., M.S., Ph.D. — Dept. of Biol., Univ. of Florida, GAINESVILLE, Florida, U.S.A. BROOKES, M. M.A., B.M., B.Ch.— Dept. of Anat., Univ. of Liverpool, LIVERPOOL 3, England a. Development of vascular organisation in foetal bone. (Mammalia) BROUWER, P. J. Med.Drs. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Development of thyroid gland and teeth (investigations with radio- active isotopes), (in collaboration with J. DANKMEIJER) BROWN, D. D. M.D., M.S. (Biochem.) — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Mechanisms of regulation of enzyme-forming systems in the early embryo. Rana pipiens (Anura) BROWN, J. W. A.B., M.A., Ph.D. — Dept. of Anat., School of Med., Univ. of Missouri, COLUMBIA, Mo., U.S.A. a. Development of the nucleus of the spinal tract of trigeminal nerve. Homo sapiens (Primates) b. Development of the chief sensory nucleus of the trigeminal nerve. Homo sapiens (Primates) BRUMBAUGH, J. A. B.S. — Dept. of Genetics, Iowa State Univ., AMES, Iowa, U.S.A. a. Analysis of action of color-pattern genes. Gallus gallus (Aves) BRUN, J. L. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Adaptation aux temperatures elevees. Caenorhabditis elegans (Nema- toda) BRUNST, V. V. Dr.Biol. — Roswell Park Memorial Inst., 666 Elm St., BUFFALO 3, N.Y., U.S.A. a. Experimental embryology. Siredon mexicanum (Urodela) b. Regeneration. Siredon mexicanum (Urodela) BRYAN, J. H. D. B.Sc, M.A., Ph.D. — Dept. of Zool. and Entomol., Coll. of Agriculture, 360 Science Building, Iowa State Univ., AMES, Iowa, U.S.A. a. Cytochemical studies of gamete formation. Mus musculus (Rodentia) b. Cytochemical studies of X-ray effects on mitosis and meiosis. Mus mus- culus (Rodentia) c. Nucleic acid-protein ratios during growth and differentiation. Mus mus- culus (Rodentia) d. Development of nuclear staining suitable for electron microscopy. 24 BUCHANAN. G. D. B.A., M.A., Ph.D. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Mechanism of delayed implantation; experimental implantation during delay. Dasypus novemcinctus (Edentata) BOCKMANN, D. Dr.rer.nat. — Zool. Inst, der Univ., Berlinerstr. 28, GOT- TINGEN, Deutsche Bundesrepublik BULMER, D. M.A., M.D.— Dept. of Anat., The University, MANCHES- TER 13, England a. Cytochemistry of developing female genital tract. Various spp. (Mam- malia) BUftO, W. B.Sc, Ph.D., Prof. — Dept. de Histol. y Embriol., Fac. de Med., MONTEVIDEO, Uruguay, S. America BURDON-JONES, C. B.Sc, Ph.D., M.I.I.E. — Marine Biol. Station, Univ. Coll. of North Wales, MENAI BRIDGE, Anglesey, Wales BURNS, R. K. A.B., Ph.D., F.I.I.E. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Mechanisms of sex differentiation as studied experimentally. Didelphis virginiana (Marsupialia) BURT, A. — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Glucose-6-phosphate dehydrogenase activity of the developing spinal cord. Gallus domesticus (Aves) (in collaboration with B. S. WENGER) BUTLER, E. G. Ph.D., D.Sc, F.I.I.E., Prof. — Dept. of Biol., Princeton Univ., Box 704, PRINCETON, N.J., U.S.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. Amby stoma punctatum, A. opacum (Urodela) b. Effects of ultraviolet radiation on limb development and limb regen- eration. (Urodela) c. Problems of polarity in the limb. Regeneration after reversal of the proximo-distal axis. (Urodela) d. Study of epidermal hyperplasia. (Urodela; Mammalia) BUTLER, H. M.A., M.D., B.Chir. — Dept. of Anat., Kitchener School of Med., Univ. of Khartoum, KHARTOUM, Sudan a. The reproductive cycle and early development. Galago seneg. senegalen- sis (Primates) b. The development of the intestine. Hyrax spec. (Hyracoidea) BUTROS, J. M. M.A., Ph.D. — Dept. of Biol., American Univ., BEIRUT, Lebanon a. Differentiation of fragments of blastoderms cultured in vi t r o on media containing desoxyribonucleic acid. Gallus spec. (Aves) BUTSCHAK, G. Dipl.Biol. — Inst, fur Med. und Biol., Deutsche Akad. der Wiss., Lindenberger Weg 70, BERLIN-Buch, D.D.R. BUYUKoZER, Miss I. M.D. — Morfol. Enst, Tip Fakultesi, Ege Univ., IZMIR, Turkey — Temporarily: Dept. of Anat., Middlesex Hosp. Med. School, LON- DON W. 1, England a. Neural crest and optic vesicle. (Vertebrata) b. The ovary. Homo sapiens (Primates) 25 Buz-Cat BUZNIKOV, G. A. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Cholinesterase in embryonic development. (Polychaeta; Insecta; Mol- lusca) b. Serotonin (5-hydroxytryptamine) in embryonic motility. (Polychaeta; Mollusca) (in collaboration with B. N. MANUKHIN) BYCZKOWSKA (SMYK), Mrs. W. Dr. — Zaklad Anat. Porownawczej U.J. im H. Hoyera, sw. Anny 6, KRAKOW, Poland a. Development of respiratory surfaces of gills. (Salmonidae, Teleostei) CAHN, Mrs. M. B. — Dept. of Biol. Sci., Brandeis Univ., WALTHAM 54, Mass., U.S.A. a. Study of the development of cellular affinities in epithelial tissue (par- ticularly in the salivary gland) by means of dissociation and reaggrega- tion. Gallus spec. (Aves) CAHN, R. D. — Dept. of Biol. Sci., Brandeis Univ., WALTHAM 54, Mass., U.S.A. a. Study of the development of lactic dehydrogenases. Gallus spec. (Aves) CAIRNS, J. M. A.B., M.S., Ph.D. — Biol. Station, Roswell Park Memorial Inst., SPRINGVILLE, N.Y., U.S.A. a. Control of growth and morphogenesis in limb buds. Gallus domesticus (Aves), Mus musculus (Rodentia) b. Origin and control of mechanisms governing feather pattern. Gallus domesticus (Aves) c. Application of control system theory to problems of development. CALAME, Miss S. M. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Organogenese du systeme urogenital. Gallus gallus (Aves) b. Culture in vitro du metanephros. Gallus gallus (Aves) CALLAN, H. G. M.A., D.Sc, Prof. — Dept. of Nat. Hist., Bell Pettigrew Museum, The University, ST. ANDREWS, Fife, Scotland (no embryological work in progress) CAMBAR, R. Dr., M.I.I.E., Prof. — Lab. de Biol, anim., Fac. des Sci., de Bordeaux, 351 Cours de la Liberation, TALENCE (Gironde), France a. Etude descriptive et experimentale de la morphogenese du mesonephros. Rana spec, Alytes spec, Discoglossus spec, Xenopus spec. (Anura) b. Etude experimentale de la morphogenese du tube digestif et des glandes annexes. (Anura) c Involution ou transformations de l'appareil excreteur pendant la meta- morphose. (Anura) d. Rapports entre l'appareil genital et l'appareil excreteur. (Anura) e. Recherches descriptives sur le developpement. Gambusia spec. (Teleos- tei) CAMOSSO, Miss M. E. Sc.Dr. — Inst, of human Anat., Fac. of Med., Policlinico, BARI, Italy a. Analysis of the morphogenesis of the wing. Gallus domesticus (Aves) CAMPBELL, J. C. B.Sc — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Antigenic studies of lens regeneration. Xenopus laevis, Tritutus alpestris (Amphibia) 26 CAMPENHOUT, E. van Dr., F.I. I.E., Prof. — Inst. d'Anat, Univ. de Lou- vain, 38 Rue des Recollets, LOUVAIN, Belgique CANDIOLLO, L. — 1st. di Anat. umana, Fac. di Med., Corso Massimo d'Azeglio 52, TORINO, Italia CAPANNA, E. Dott.Sci.Nat. — 1st. di Anat. comp. "G. B. Grassi", Fac. di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia a. Experiments on the development of the optic tectum. Rana spec. (Anura) b. Culture of embryonic tissues. Triturus spec. (Urodela), Hyla spec. (Anura) CARLSON, G. L. A.B., M.S., Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md.. U.S.A. a. Spermatogenesis. Cavia cobaya (Rodentia) CARTIER, R. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 111 Rue L. M. Nordmann, PARIS XIII, France CASPARI, E. W. Ph.D., M.I. I.E., Prof. — Biol. Lab., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER 20, N.Y., U.S.A. a. Mitochondria in development and heredity. Mus musculus (Rodentia) b. Development of pigment granules and riboflavin in the testis. Ephestia Kiihniella (Lepidoptera) CASTIGLI (PITOTTI), Mrs. M. Dott., Prof. — 1st. di Biol, gen., Fonda- zione Agraria, S. Pietro, PERUGIA, Italia a. Natura della gastrulazione senza segmentazione. Petromyzon [luuiatilis (Cyclostomata) b. Azione e reazione nella metamorfosi. Bufo vulgaris (Anura) c. Morfogenesi proteica. d. Rigenerazione e determinazione del sesso. CASTIGLIONI, Miss M. C. Dr. — 1st. di Genet., Univ. di Milano, Via Celoria 10, MILANO, Italia a. Experimental study of development of pseudotumors. Drosophila spec. (Diptera) b. Transplantation of eye discs between stocks with developmental abnor- malities of the eye. Drosophila spec. (Diptera) c. Paper chromatography of mutants. Drosophila spec. (Diptera) d. Tissue culture. Drosophila spec. (Diptera) CATE, G. ten M.D., M.I.I.E., Prof . — Anat.-Embryol. Lab., State Univ., Janskerkhof 3A, UTRECHT, Netherlands a. Study about the origin of the specific lens protein a-crystallin and of other organ-specific proteins in development. (Amphibia), Gallus spec. (A ves ) b. Study on the effect of temperature on morphological development. (Am~ phibia) CATHER, J. N. B.S., M.S., Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. a. The differentiation of the shell gland. Ilyanassa obsoleta and other Gastropoda and Pelecypoda (Mollusca) b. Somite differentiation in T/T embryos. Mus musculus (Rodentia) CATHEY, W. J. M.D. — Dept. of Pathol., The Johns Hopkins Hospital, 601 North Broadway, BALTIMORE 5, Md., U.S.A. (no embryological work in progress) 27 Cau-Cla CAUNA, N. M.Sc. M.D., Prof. — Dept. of Anat., School of Med., Univ. of Pittsburgh, PITTSBURGH 13, Pa., U.S.A. a. Development of cutaneous receptor organs and nerves. Homo sapiens (Primates) b. Early development of limbs. Homo sapiens (Primates) and other spp. (Vertebrata) C£AS, Miss M. P. Ph.D. — Stazione Zool., Acquario, NAPOLI, Italia CHAIGNEAU, J. Lie. es Sci. — Lab. de Zool. et Biol, anim., Fac. des Sci., POITIERS, Vienne, France a. Sexualite et developpement. (Phyllopoda, Crustacea) CHALKLEY, D. T. B.A., M.A., Ph.D. — Nat. Cancer Inst., BETHESDA. Md., U.S.A. CHANG, C. Y. M.S., Ph.D., M.I.I.E. — Inst, of Zool, Acad. Sinica, Hai- tien, PEKING (53), China (via Hong-Kong) CHARNIAUX (COTTON), Mrs. H. Dr. es Sci. — Lab. de Genet, evolu- tive du C.N.R.S.. GIF sur Yvette (S. et O.), France a. Controle hormonal de la differenciation sexuelle. La glande androgene. (Malacostraca, Crustacea) b. Determination genetique du sexe. Orchestia gammarellus (Amphipoda, Crustacea) c. Controle endocrine de l'hermaphrodisme proterandrique. Pandalus bore- alis, Lysmata seticaudata (Decapoda natantia, Crustacea) d. Controle hormonal de la differenciation sexuelle. (lsopoda, Crustacea) CHASE, H. B. Ph.D., M.I.I.E., Prof. — Arnold Biol. Lab., Brown Univ., PROVIDENCE 12, R.I., U.S.A. a. A study of anophthalmia and microphthalmia. Mus musculus (Rodentia) b. A study of skin and its derivatives with emphasis on hair development and pigment distribution. Mus musculus (Rodentia) c. Radiation effects on hair follicle morphogenesis. Mus musculus, Cavia cobaya (Rodentia) CHAYTOR, D. E. B. B.Sc — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Control of growth in some embryonic organs. Gallus domesticus (Aves) CHEN, P. S. Dr.Phil., M.I.I.E., Prof. — Zool.-vergl. Anat. Inst, Naturw. Fak., Univ. Zurich, Kiinstlergasse 16, ZURICH 6, Schweiz CHENEY, R.H. B.S., A.M., S.M., Sc.D., Prof. — Dept. of Biol., Brooklyn Coll., Bedford Ave. and Ave. H, BROOKLYN 10, N.Y., U.S.A. a. Retardation effect of dimethylated xanthines on development. Arbacia punctulata (Echinoidea) b. Theophylline, theobromine, and caffeine effects on fecundity and devel- opment. Rattus norvegicus (Rodentia) c. Effect of di- and trimethylated xanthines on root tip growth. Allium spec. (Liliaceae) d. Effect of methylated xanthines on the oxygen consumption of the fertilized egg and early embryology. Arbacia punctulata (Echinoidea) e. Effect of x-ray and ultra-violet irradiation on development of methylated xanthine-treated eggs. Arbacia punctulata (Echinoidea) f. Effect of caffeine on development. Rana pipiens (Anura) CHENG WEI, Mrs. D. B.S., A.M., Ph.D. — Dept. of Anat., State Univ. of Iowa, IOWA CITY, Iowa, U.S.A. 28 a. Congenital malformations due to maternal vitamin E deficiency. Mus norvegicus albinus (Rodentia) 1. Gross observations on developing abnormal embryos. 2. Effect of progesterone and estrone. 3. Effect of gamma-tocopherol supplementation. 4. Diets and vitamin E teratogeny. 5. Tocopherol levels in rat tissues. 6. Antioxidants and vitamin E teratogeny. CHfiVREMONT, M. J. J. Prof., Membre corresp. de l'Acad. Roy. de Med. de Belgique — Inst. d'Histol., Univ. de Liege, 20 Rue de Pitteurs, LI£GE, Belgique a. Etude de substances antimitotiques et de leur mecanisme d'action en cul- ture de tissus. b. Cytogenetique. c. Phenomenes de regeneration in vivo et in vitro. CHIEFFI, G. M.D. — 1st. di Genet., Universita, Via Mezzocannone 8, NAPOLI, Italia a. Sex differentiation and experimental sex reversal. ( Elasmobranchii; Amphibia) b. Sex hormone metabolism during development. (Elasmobranchii; Amphi- bia) c. Haemoglobin changes in the course of development. (Pisces; Amphibia) CHISHIMA, K. Prof. — Lab. for Biol., Gifu Univ., Nagara, GIFU, Japan CHOUARD, C. H. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Noyaux du faisceau solitaire. Homo sapiens (Primates) CHOVNICK, A. A.B., M.A., Ph.D. — Long Island Biol. Lab., COLD SPRING HARBOR, N.Y., U.S.A. a. Developmental effects of pseudoallelic loci. Drosophila melanogastet (Diptera) b. Parameters in recombination. Drosophila melanogastev (Diptera) c. Gene conversion. Drosophila melanogastev (Diptera) CHUANG HSIAO HUI Dr.rer.nat, Dr.rer.nat.habil., F.I.I.E. — Lab. of Developm. Physiol, Inst, for Exper. Biol., Acad. Sinica, 320 Yo Yang Road, SHANGHAI, China CIGADA (LEONARDI), Mrs. M. Dott.Sci.Biol., M.I.I.E. — 1st. di Zool. e Anat. Comp., Univ. di Milano, Via Celoria 10, MILANO, Italia CIHAK, R. MUDr. — Dept of Anat., Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a. Prenatal development of muscles. Homo sapiens (Primates) CLARK, H. B.A., Ph.D., Prof. — Dept. of Zool., Univ. of Connecticut, STORRS, Conn. U.S.A. a. Nitrogen metabolism of embryos. (Reptilia; Aves) b. Factors affecting reaggregation of segregated cells in tissue culture. c. Phase contrast cinematography of differentiating cells. Gallus domesticus (Aves) d. Relation of enzyme activity to morphological features of developing kidney. (Aves; Mammalia) CLAVERT, J. M. J. Dr. en Med., Dr. es Sci., M.I.I.E., Prof. — Inst. d'Em- bryol., Fac. de Med., 1 Place de l'Hopital, STRASBOURG, France 29 Clavert-Cos a. Formation de l'oeuf (Role de l'hormone femelle dans la vitellogenese). (Pisces; Reptilia) , Columba spec, Anas spec, Gallus spec. (Aves) b. Recherches sur le determinisme de la symetrie bilaterale. (Pisces; Reptilia; Aves) CLAYTON (FREEDMAN), Mrs. R. M. B.A., M.A., M.I.I.E., — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Studies of differentiation by immunological and other techniques. Tritu- rus alpestris (Utodela) b. Differentiation in tissue culture. Gallus spec. (Aves) c. Studies of differentiation by immunological and chromatographic tech- niques. Mus musculus (Rodentia) d. Immunogical study of nucleoproteins. Gallus spec. (Aves) e. Differentiation of the reticulocyte. Homo sapiens (Primates) (in colla- boration with K. B. ROBERT and Miss M. M. PERRY) f. The patterns of heterogeneous induction. Xenopus laevis (Anura) (in collaboration with M. SALA, S.J., Padova. and J. SIRLIN) CLEGG, E. J. M.B., Ch.B., Ph.D. — Dept. of Anat, Univ. of Liverpool, LIVERPOOL 3, England a. Effects of artificial cryptorchidism on the accessory reproductive organs. (Mammalia) b. Effects of low atmospheric pressure on the reproductive and endocrine systems of laboratory animals. (Mammalia) CLEMENT, A. C. Ph.D., M.I.I.E., Prof. — Dept. of Biol., Emory Univ., ATLANTA 22, Ga., U.S.A. a. Localization of morphogenic factors: experimental analysis. Ilyanassa obsoleta (Gastropoda) b. Cytochemical and physiological studies of early development. Ilyanassa obsoleta (Gastropoda) CLERMONT, Y. M.Sc, Ph.D. — Dept. of Anat., McGill Univ., MON- TREAL, Quebec, Canada a. Origin and morphology of the sex cords. Rattus norvegicus (Rodentia) COHN, S. A. B.S., M.S., Ph.D. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. The development of glands of ectodermal origin. Gallus domesticus (Aves,) Mus musculus (Rodentia) b. Cytological, cytochemical and histochemical studies on the initiation of secretory activity in developing ectodermal glands. Mus musculus (Ro- dentia) c. Studies of tooth development. Mus musculus (Rodentia) d. Studies of periodontium. Mus musculvs (Rodentia) COLEMAN, J. R. A.B., M.A. — Dept jf Zool., Univ. of Connecticut, STORRS, Conn., U.S.A. a. Immunochemical study of DNA and DNA-protein of developing red blood cell. Gallus gallus (Aves) b. Developmental study of deoxyribonucleases. Rana pipiens (Anura) COLLE (VANDEVELDE), Mrs. A. M.D. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1, GENT, Belgium a. Development of blood. (Teleostei) COLOMBO, G. Dr.Biol.Sc, M.I.I.E., Prof. — 1st. di Anat. Comp., Fac. di Sci., S. Pietro, PERUGIA, Italia 30 a. Gametogenesis. (Arthropoda) b. Development of the gonads. (Insecta) c. Biochemistry of embryogenesis. (Insecta) COLWIN, A. L. Ph.D., M.I.I.E., Prof. — Dept. of Biol., Queens Coll., FLUSHING 67, L.I., N.Y., U.S.A. a. Fertilization: sperm-egg association and sperm penetration; cortical changes; membrane changes, lytic aspects. Living material and electron microscope studies. (Enteropncusta, Echinodermata, Annelida) (in col- laboration with Mrs. L. H. COLWIN) COLWIN, Mrs. L. HUNTER Ph.D., M.I.I.E., Prof. —Dept. of Biol., Queens Coll., FLUSHING 67, L.I., N.Y., U.S.A. a. Fertilization: sperm-egg association and sperm penetration; cortical changes; membrane changes, lytic aspects. Living material and electron microscope studies. (Enteropneusta, Echinodermata, Annelida) (in col- laboration with A. L. COLWIN) CONAWAY, C. H. B.S., Ph.D., Prof. — Dept. of Zool., Univ. of Missouri, 213 Lefevre Hall, COLUMBIA, Mo., U.S.A. CORLISS. C. E. B.S., M.S., Ph.D. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Study of mitotic activity and its relation to morphogenesis in young embryos. Mus norvegicus albinus (Rodentia) b. Colchicine toxicity to embryonic tissue. Mus norvegicus albinus (Ro- dentia) c. Study of mitotic activity in the central nervous system and its relation to morphogenesis and virus susceptibility. Gallus domesticus (Aves) CORNER, G. W. A.B., M.D., D.Sc, F.I.I.E., Prof. — Rockefeller Inst, for Med. Research, 66th St. and York Ave., NEW YORK 21, N.Y., U.S.A. CORNER, G. W., Jr. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Anatomical and radiological studies of circulation in the maternal pla- centa. Macaca mulatta, Homo sapiens (Primates) (in collaboration with Miss E. M. RAMSEY and M. W. DONNER) b. Determinations of blood, amniotic and intervillous space pressures throughout pregnancy. Macaca mulatta (Primates) (in collaboration with Miss E. M. RAMSEY and W. N. LONG) CORNER, M. A. B.S. — Dept. of Zool., Columbia Univ., NEW YORK 27, N.Y., U.S.A. a. Properties of isolated neural plate regions through the neurula stages by means of the explant technique. 1. Neural structures formed. 2. Formation of sensory or motor nerves and functional synapses. 3. Spontaneous and reflex (touch) discharges as seen by the pattern of muscle contractions. Ambystoma mexicanum, Xenopus laevis (Amphibia) COSTELLO, D. P. Ph.D., F.I.I.E., Prof. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. a. Studies in experimental cytology. Polychoerus spec. (Acoela, Turbel- laria), Chaetopterus pergamentaceus (Polychaeta) (in collaboration with Miss C. HENLEY) b. Effects of antimitotic agents on eggs. Chaetopterus pergamentaceus (Polychaeta) (in collaboration with Miss C. HENLEY) c. Studies on the centriole. Polychoerus carmelensis (Acoela, Turbellaria) 31 Cos-Czi COSTLOW, J. D., Jr. A.B., Ph.D. — Duke Univ. Marine Lab., BEAU- FORT, N.C., U.S.A. COTRONEI, G. Dott., F.I.I.E., Prof. (Emer.) —1st. di Anat. comp. "G. B. Grassi", Fac. di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia COULOMBRE, A. J. B.S., M.S., Ph.D — Lab. of Neuroanat. Sci., NINDB, National Inst, of Health, BETHESDA 14, Md., U.S.A. a. Developmental physiology of corneal transparency. Gallus domesticus (Aves) (in collaboration with L. J. COULOMBRE) b. Scleral ossicles and conjunctival papillae. Gallus domesticus (Aves) (in collaboration with J. L. COULOMBRE) c. Trophic interactions between embryonic nervous system and periphery. Gallus domesticus (Aves) (in collaboration with J. L. COULOMBRE) d. Embryonic origins of vitrous body. Gallus domesticus (Aves) COULOMBRE, Jane L. B.S. — Lab. of Neuroanat. Sci., NINDB, National Inst, of Health, BETHESDA 14, Md., U.S.A. a. Developmental physiology of corneal transparency. Gallus domesticus (Aves) (in collaboration with A. J. COULOMBRE) b. Scleral ossicles and conjunctival papillae. Gallus domesticus (Aves) (in collaboration with A. J. COULOMBRE) c. Trophic interactions between embryonic nervous system and periphery. Gallus domesticus (Aves) (in collaboration with A. J. COULOMBRE) COUNCE— NICKLAS, Mrs. S. J. B.A., M.A., Ph.D. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Developmental effects of female-sterility genes. Drosophila spec. (Dip- tera) b. Developmental effects of heritable cytoplasmic factors ("sex-ratio"). Drosophila spec. (Diptera) c. Experimental analysis of embryogenesis. Melanoplus differential (Or- thoptera), Miastor spec. (Diptera) d. Comparative embryology. Drosophila spp. (Diptera) COURTEY, Miss. B. — Lab. d'Anat. comp., Fac. des Sci., ORSAY (S. & O.), France a. Embryologie du systeme nerveux en culture de tissus. Gallus domesticus (Aves) b. Regeneration des fibres nerveuses en culture de tissus. Gallus domesticus (Aves) CRANE, R. K. B.S., Ph.D. — Dept. of Biochem., Med. School, Washington Univ., 4577 McKinley, ST. LOUIS 10, Mo., U.S.A. a. Alterations of pyridine nucleotides in dividing marine embryos. b. Active transport of sugars. CRELIN, E. S. Ph.D. — Dept. of Anat., Yale Univ. Med. School, 333 Ce- dar St., NEW HAVEN 11, Conn., U.S.A. CRISP, D. J. M.A., Ph.D. — Marine Biol. Station, Univ. Coll. of North Wales, MENAI BRIDGE, Anglesey, Wales CROISILLE, Y. Lic.es Sci., Dr. de l'Univ. de Paris — Lab. d'Embryol. exper. du Coll. de France, 11 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Culture de foie embryonnaire sur des milieux a base de divers extraits d'organes. Gallus gallus (Aves) 32 b. Culture d'organes embryonnaires sur des extraits homo- et heterologues. Gallus gallus (Aves) c. Application de methodes immunochimiques a l'etude de l'apparition des constitutants specifiques au cours du developpement. Gallus gallus (Aves) CROWELL, Miss J. Ph.D. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, PALERMO, Italia a. Electron microscopy of early developmental stages of forms with mosaic development. Ilyanassa obsoleta (Gastropoda) CROWELL, P. S. A.B., A.M., Ph.D., M.I.I.E. — Dept. of Zool., Indiana Univ., BLOOMINGTON, Ind., U.S.A. CRUZ (DE LOSADA), Mrs. M. V. DE LA M.D. — Dept. of Embryol., Inst. Nac. de Cardiol., Ave. Cuauhtemoc nr. 300, MEXICO 7. D. F., Mexico a. The action of influenza virus (P-R8) upon cardiac development. Gallus spec. (Aves) b. A new surgical technique for direct study of the embryonic heart. Gallus spec. (Aves) c. The role of transphosphorylases in the control of cardiac oxygen con- sumption during development. Gallus spec. (Aves) CSILLIK, B. M.D. — Dept. of Anat, Univ. Med. School, SZEGED, Hun- gary a. Developmental histochemistry of motor end plates (cholinesterase ac- tivity). Mus rattus (Rodentia) (in collaboration with I. SCHNEIDER and G. KALMAN) b. Submicroscopical analysis of the development of post-synaptic mem- branes. Mus rattus (Rodentia) (in collaboration with I. SCHNEIDER and G. KALMAN) c. Developmental histochemistry of muscle spindles (cholinesterase acti- vity). Mus rattus (Rodentia) (in collaboration with. I. SCHNEIDER and G. KALMAN) CURTIS, A. S. G. M.A., Ph.D. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C.I, England a. Surface properties, movement and adhesion of embryonic cells and can- cerous tissues. (Amphibia; Aves; Mammalia) b. Dissociation and reaggregation of embryos. (Amphibia; Aves) c. Cytoplasmic grafting. (Amphibia) CURY, G. Agr. Phil., Lic.es Sci. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Regulation de l'oeuf. (Amphibia) b. Developpement de l'hypophyse. (Aves) (en collaboration avec G. GRIGNON, Lab. d'Histol.) c. Hematopoiese. (Aves) (en collaboration avec A. DOLLANDER, J. P. FRITSCH et Mrs. D. GASSIOLE) CZAPSKA, D. Mgr. — Chair of Gener. Biol., Silesian Acad, of Med.. Rokitnica, ZABRZE 8, Poland a. Chromosome studies. Plantago spec. b. Mitotic regulation. Mus musculus albinus (Rodentia) CZIHAK, G. Dr.phil. — Zool. Inst, der Univ. Tubingen, Holderlinstr. 12, TUBINGEN, Deutsche Bundesrepubliek 33 Czihak-De F a. Entwicklung und Storung der Bilateralsymmetrie des Pluteus. Paracen- trotus spec, Psammechinus spec. (Echinoidea) b. Entwicklung und Differenzierung der Coelome beim Pluteus. Paracen- trotus spec, Psammechinus spec. (Echinoidea) DAGG, C. P. B.S., Ph.D. — Roscoe B. Jackson Memorial Lab., BAR HAR- BOR, Me., U.S.A. a. Environmental influences on embryonic development. Mus musculus (Rodentia) b. Developmental genetics. Mus musculus (Rodentia) DAHL, E. Prof . — Embryol. Dept., Zool. Inst., Univ. of Lund, LUND, Sweden DAILLIE, J. — Lab. de Zool. exper., Fac des Sci., 16 Quai CI. Bernard, LYON, France a. Physiologie de la glande sericigene. Bombyx mod (Lepidoptera) DALCQ, A. M. M.D., F.I.I.E., 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. (Ascidiae; Mammalia) b. ATP-ase in eggs. (Mollusca and other Invertebrata; Mammalia) DALMON, J. — Lab. de Zool. exper., Fac des Sci., 16 Quai CI. Bernard, LYON, France a. Metabolisme des acides nucleiques. Arbacia lixula (Echinoidea) DALTON, H. C. Ph.D. — Dept. of Biol, Univ. Coll., New York Univ.. NEW YORK 53, N.Y., U.S.A. a. Role of hypomeric mesoderm in expression of genetic patterns of pig- mentation. Siredon mexicanum (Urodela) DAMAS, H. F. C. Dr.Sc, Agr.Zool., M.I.I.E., Prof. — Dept. Morphol, Inst, de Zool. Ed. Van Beneden, Fac des Sci., 22 Quai Ed. Van Bene- den, LIfiGE, Belgique a. Etude descriptive et comparative du developpement. Petromyzon mad- nus, Lampetra [luviatilis, L. planed (Cyclostomata) D'AMELIO, V. Ph.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archi- rafi 22, PALERMO, Italia a. Formation of hemoglobin. Gallus spec. (Aves) DAMERON, Miss F. Lic.es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. L'influence de la temperature sur la croissance et la differenciation d'or- ganes embryonnaires cultives in vitro. Gallus gallus (Aves) b. Morphogenese du poumon par les methodes de dissociation et de reas- sociation en culture i n v i t r o. Gallus gallus (Aves) DAN, Mrs. J. C. Ph.D., M.I.I.E. — Embryol. Section, Dept. of Biol, Fac. of Sci., Ochanomizu Univ., Bunkyo-ku, TOKYO, Japan a. Electron microscope observation of spermatozoa under various experi- mental conditions. (Annelida; Mollusca; Echinodermata) b. Sperm entry. (Nereidae, Polychaeta) c Fine structure of egg surface. (Asteroidea, Echinodermata) DAN, K. Ph.D., F.I. I.E., Prof. — Embryol. Section, Dept. of Biol., Fac. of Sci, Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. Mechanism of polar body formation. (Mollusca) b. Protein SH in the ova. (Echinoidea) 34 c. Lunar periodicity of spawning. Comanthus japonica (Crinoidea) D'ANCONA, U. Dr.Nat.Sci., F.I. I.E., Prof.— 1st. di Zool. e Anat. comp., Fac. di Sci.. Via Loredan 10, PADOVA, Italia a. Differentiation of the gonad. (Vertebrata, esp. Pisces) DANKMEIJER, J. Med.Dr., M.I.I.E., Prof. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Normal and abnormal development of the heart. Homo sapiens and other Animalia (in collaboration with J. A. LOS) b. Development of thyroid gland and teeth (investigations with radio-active isotopes), (in collaboration with P. J. BROUWER) c. Development of uterus. Homo sapiens (Primates) d. Heart and vessels in congenital malformations. Homo sapiens (Primates) (in collaboration with H. A. SNELLEN, Miss A. DEKKER and Miss H. C. vanlNGEN) e. Development of the stomach. Homo sapiens (Primates) (in collaboration with M. MIETE) D'ANNA, T. Ph.D. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Radioautographic investigations in embryonic development. (Ascidiae) DARLINGTON, D. M.B., Ch.B. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston, BIRMINGHAM 15, England DASGUPTA, B. M.Sc, Ph.D. — Biol. Lab., Darjeeling Government Coll., DARJEELING, West Bengal, India a. The development of a parasitic form on living toads. Lucilia porphyrina (Diptera) DAVID, J. R. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Physiologie et genetique du developpement et de la croissance. Droso* phila melanogaster (Diptera) DAVIES, D. H. M.Sc, Ph.D., Prof. — Oceanographic Research Inst., P.O. Box 736, DURBAN, South Africa a. General embryology. (Carcharinidae, Selachii) DAVIES, F. M.D., D.Sc, Prof. — Dept. of Anat., Fac. of Med., Univ. of Sheffield, SHEFFIELD, England a. Histological studies of conducting system of the heart. (Mammalia) (in collaboration with E. T. B. FRANCIS, Dept. of Zool.) DE BEER, Sir G. R. F.I.I.E., Prof. — 39 Shrewsbury House, Cheyne Walk, LONDON S.W. 3, England DECHAMBE, Miss C. — Lab. de Biol, anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, TALENCE (Gironde), France a. Modalites et facteurs de formation de l'ostium. (Anura) b. Etude experimentale de la metamorphose de l'appareil excreteur.f Anura) DECK, J. D. B.S., M.A., Ph.D. — Dept. of Anat., School of Med., Univ. of Virginia, CHARLOTTESVILLE, Va., U.S.A. a. The effects of reducing innervation on larval forelimb regeneration. Am- bystoma maculatum (Urodela) b. The partially denervated larval forelimb studied with the electron micro- scope. Ambystoma maculatum (Urodela) DE FEO, V. J. B.S., M.S., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. 35 De Feo-Die a. Embryo-maternal relationships. 1. Nature of uterine sensitivity. 2. Mech- anism of deciduoma formation. Rattus rattus ( Rodentia) DEGENHARDT, K.-H. Dr.med. — Inst, fur Humangenetik der Univ. Mini- ster, Vesaliusweg 12/14, MONSTER (Westf.), Deutsche Bundesrepu- blik a. Descriptive embryology. Oryctolagus cuniculus ( Lagomorpha) , Mustela erminea (Carnivora) b. Experimental embryology. Oryctolagus cuniculus (Lagomorpha), Mus- tela erminea (Carnivora) c. Developmental genetics. Oryctolagus cuniculus (Lagomorpha), Mustela erminea (Carnivora) d. Developmental pathology. Oryctolagus cuniculus (Lagomorpha), Mus- tela erminea (Carnivora), Mus musculus (Rodentia) DeHAAN, R. L. M.A., Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Morphogenetic movements associated with embryonic heart formation. Gallus gallus (Aves) b. Membrane-linked phenomena and mechanisms of cell adhesion during morphogenesis. Dictyostelium discoideum (Acrasiales), Gallus gallus (Aves) c. Pacemaker formation and the initiation of the heartbeat. Gallus gallus (Aves) DEKKER, Miss A. Med.Dr. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Heart and vessels in congenital malformations. Homo sapiens (Primates) (in collaboration with J. DANKMEIJER, H. A. SNELLEN and Miss H. C. van INGEN) DELMAS, A. Prof. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Developpement de l'encephale. Homo sapiens (Primates) b. Developpement anormal de l'encephale et des organes des sens. Mus rattus (Rodentia) DENIS, H. A. Lic.en Sci. Zool. — Dept. Morphol., Inst, de Zool. Ed. Van Beneden, Fac. des Sci., 22 Quai Ed. Van Beneden, LIfiGE, Belgique a. Etude du caractere progressif de la determination de la plaque neurale. Pleurodeles Waltlii (Urodela) b. Recherche sur la genese des organes cerebraux, par la methode des greffes. Pleurodeles Waltlii, Ambystoma mexicanum (Urodela) c. Etude de la differenciation des proteines au cours du developpement. Pleurodeles Waltlii (Urodela) DENNY, P. C. B.A. — Dept. of Embryol., Div. of Biol., California Inst, of Technol., PASADENA 4, Cal., U.S.A. a. Enzyme induction in marine embryos. ( Echinodermata) DENT, J. N. A.B., Ph.D., Prof. — Dept. of Biol., Univ. of Virginia, CHAR- LOTTESVILLE, Va., U.S.A. a. Regeneration. Xenopus laevis (Anura) DEOL, M. S. B.Sc. M.Sc, Ph.D. — Dept. of Genet., Univ. Coll. of London, Gower St., LONDON W.C.I, England a. Developmental genetics of skeletal mutants. Mus musculus (Rodentia) 36 DETH, J. H. M. van M.D., Prof. — Dept. of Anat. and Histol., Univ. of Adelaide, ADELAIDE. S. Australia, Australia a. Fetal endocrinology. (Aves; Mammalia) DETTLAFF, Mrs. T. A. Dr.Biol.Sci., M.I.I.E., Prof. —Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOS- COW V-71, U.S.S.R. a. Fertilization and artificial egg activation: acrosomal reaction; velocity of fertilization impulse. Huso huso, Acipenser guldenst'adti, A. stellatus (Acipenseridae, Chondrostei) (in collaboration with Mrs. A. S. GINS- BURG) b. Cell division: duration, mechanism, relation to the process of differen- tiation. (Acipenseridae, Chondrostei) , Rana temporaria (Anura) c. Ovulation in vitro. (Acipenseridae, Chondrostei; Anura) DEUCHAR, Miss E. M. M.A., Ph.D., M.I.I.E. — Dept. of Anat. and Em- bryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Amino-acid activation systems in embryonic tissues. Xenopus laevis (Anura), Gallus domesticus (Aves) b. Cellular uptake of amino-acids into proteins studied autoradiographically. Xenopus leavis (Anura) , Gallus domesticus (Aves) DEV, D. — Cell Research Unit, Dept. of Zool., Calcutta Univ., 35 Ballygunje Circular Road, CALCUTTA 19, India DEVILLERS, Ch. M.I.I.E,, Prof. — Lab. d'Anat. et d'Histol. comp., 7 Quai St. Bernard, PARIS Ve, France a. Origine de l'energie utilisee au cours du developpement de l'oeuf. Salmo fario, S. irideus (Teleostei) b. Recherches sur la symetrisation de l'oeuf. Salmo spec. (Teleostei) DiBERARDINO, Miss M. A. B.S. — Inst, for Cancer Research, 7701 Bur- holme Avenue, PHILADELPHIA 11, Pa., U.S.A. a. Investigations of germ plasm in relation to nuclear transplantation. Rana pipiens (Anura) b. Establishment of karyotype and an investigation into its stability during embryonic differentiation. Rana pipiens (Anura) DICK, D. A. T. M.B., Ch.B., D.Phil. — Dept. of Human Anat., Univ. Museum, South Parks Road, OXFORD, England a. Study of ion fluxes in oocytes. Bufo bufo (Anura) DICKSON, A. D. M.A., M.D. — Dept. of Anat., Marischal Coll., ABER- DEEN, Scotland DIETERLEN (LlEVRE), Mrs. F. Lic.es Sci., M.A. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Embryonic differentiation of the endocrine cells of the pancreas, and the influence of hypophysectomy on differentiation. Gallus gallus (Aves) b. I n v i t r o development of the pancreas. Its influence on liver glycogen in associated cultures. Gallus gallus (Aves) c. Formation de glycogene dans des cultures organotypiques de foie em- bryonnaire. Influence d'hormones incorporees au milieu. Gallus gallus (Aves) d. Dif ferenciation de la thyroide embryonnaire cultivee in vitro sur des milieux synthetiques. Gallus gallus (Aves) 37 Dim-Dut DIMITROVA, Miss A. D.Sc, Prof. — Inst, of Gener. Biol., Higher Med. School Blwd. Lenin N. 2, SOFIA 13, Bulgaria a. Larval limb regeneration as influenced by the medium. (Anura) b. Muscle regeneration. Rattus spec. (Rodentia) DIMOND, Sister M. T. A.B., M.S., Ph.D. — Trinity Coll., WASHING- TON 17, D.C., U.S.A. a. Histogenesis and interrelations of endocrines: the hypophysis under nor- mal conditions and after treatment with thiourea. Chelydra serpentina serp., and other spp. (Chelonia) b. Effects of thiourea and perchlorate on I131 uptake during development. Scyliorhinus canicula (Selachii) DINGLER (HAHL), Mrs. E. Ch. Dr.med. — Anat. Inst, der Univ. Miin- chen, Pettenkoferstr. 11, MUNCHEN 15, Deutsche Bundesrepublik DOBROKHOTOV, V. N. Dr. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. DOER (SCHOTT), Mrs. J. Lic.es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRAS- BOURG, France a. Analyse de l'entree en jeu des correlations hypothaiamo-pituitaires par la methode de greffes hypophysaires. Rana temporaria, Triturus crista- tus, T. marmoratus (Amphibia) DOHRN, P. M.D., Ph.D. — Stazione Zool., NAPOLI, Italia DOLLANDER, A. M.I.I.E., Prof. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Etude des proprietes mecaniques du cortex de l'oeuf. (Amphibia) b. Etudes des proprietes du permeabilite du cortex de l'oeuf. (Amphibia) (en collaboration avec Miss R. AUTELIN) c. Etude morphologique du cortex de l'oeuf au microscope optique et au microscope electronique. (Amphibia; Mammalia) d. Structure du spermatozoide au microscope optique et au microscope elec- tronique. (Amphibia) e. Hematopoiese. (Aves) (en collaboration avec G. CURY, J. P. FRITSCH et Mrs. D. GASSIOLE) DOMAC, B. — Inst. d'Histol., Fac. de Med., Salata, ZAGREB, Yougoslavie a. Influence of high and low temperature on development. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB, Inst, de Biol., and Z. FRANK) DONALDSON, J. C. Ph.B., M.D., Prof. (Emer.) — Dept. of Anat., School of Med., Univ. of Pittsburgh, 868B Scaite Hall, PITTSBURGH 13, Pa., U.S.A. a. Pancreatic developmental studies. Homo sapiens (Primates) DONNER, M. W. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Anatomical and radiological studies of circulation in the maternal pla- centa. Macaca mulatta, Homo sapiens (Primates) (in collaboration with Miss E. M. RAMSEY and G. W. CORNER, Jr.) DOORENMAALEN, W. J. van M.D., M.I.I.E. — Anat.-Embryol. Inst, Municipal Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O., Netherlands a. The localisation of lens proteins in lens development. Gallus gallus (Aves) 38 b. Source of lens proteins in lens regeneration. Gallus gallus (Aves) DOSKOcIL, M. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3. PRAHA 2, Czechoslovakia a. Growth of cranial base. Homo sapiens (Primates) DOSSEL, W. E. A.B., M.S., Ph.D. — Dept. of Anat., School of Med., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. DOUARIN, G. H. Le — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Action des rayons X sur la physiologie et le developpement du coeur embryonnaire. Gallus gallus (Aves) DOUARIN (CHAUVAC), Mrs. N. M. Le — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Etude experimental de l'organogenese de l'appareil digestif. Gallus gallus (Aves) DRAGOMIROV, N. I. Dr.Biol.Sci., F.I.I.E., Prof. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOS- COW V-71, U.S.S.R. a. The development of the lateral sensory system. Acipenser ruthenus (Chondrostei) DREYER, Miss M. V. M.Sc. — Dept. of Zool., Univ. of O.F.S., BLOEM- FONTEIN, Republic of South Africa a. A histological investigation on the epithelio-neural bodies. Gallus domes- ticus (Aves) DRUKKER, J. Med.Drs. — Anat.-Embryol. Inst., Municipal Univ. of Am- sterdam, Mauritskade 61, AMSTERDAM O., Netherlands a. Development of pancreas. (Aves) b. Tissue culture of embryonic pancreas. DUFAURE, J. P. Lic.es Sci. — Lab. de Zool., 1 Avenue Vercingetorix, CLERMONT-FERRAND, France a. Developpement embryonnaire. Lacerta vivipara (Lacertilia) DUFFEY, L. M. B.S., M.S., Ph.D. — Dept. of Anat., Med. Center, Univ. of Alabama, 1919 Seventh Ave. So., BIRMINGHAM 3, Ala., U.S.A. a. Beginnings of cardiogenesis. Gallus gallus (Aves) DUKE, K. L. A.B., Ph.D. — Dept. of Anat., Med. Center, Duke Univ., DURHAM, N.C., U.S.A. a. Comparative histology of mammals (including developmental stages, and history of germ cells). Cynocephalus spec, Pteropus spec, Nycticebus spec, Presbytis spec, Paramanis spec (Mammalia) DURANTE, Miss M. C. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Cholinesterase, dipeptidase and other enzymes in embryonic develop- ment. (Ascidiae) DUTRIEU, Miss J. — Lab. de Physiol, gener., Fac des Sci. de Bordeaux, 40 Rue Lamartine, TALENCE (Gironde), France a. Metabolisme des glucides (trehalose) au cours du developpement. Arte- mia salina (Anostraca, Crustacea) , Calliphora erythrocephala (Diptera), Bombyx mod (Lepidoptera) 39 Dut-Eng DUTTA, J. M.Sc — Dept. of Zool., Presidency Coll., College St., CAL- CUTTA 12, India a. Nucleo-cytoplasmic relationship. Amoeba spec. (Ciliata) (in collabo- ration with Mrs. M. G. ALAMELU, S. MOOKERJEE, Miss D. MUK- HERJI and L. WAIDYASEKARA) DUYVENE DE WIT, J. J. Dr.Phil.Nat, Prof. — Dept. of Zool., Univ. of O.F.S., BLOEMFONTEIN, Republic of South Africa a. Normal and hybrid development. (Acheilognathinae, Teleostei) (in collaboration with E. K. BALON, Bratislava, Czechoslovakia) DYBERN, B. I. — Zool. Inst., Univ. of Gothenburg, Fjarde Langgatan 7B, GOTEBORG-SV, Sweden a. Taxonomic and embryological studies. (Ascidiae) DZIALLAS, P. R. Dr.med. — Anat. Inst, der Univ. Munchen, Pettenkofer- str. 11, MONCHEN 15, Deutsche Bundesrepublik EAKIN, R. M. Ph.D., F.I.I.E., Prof. — Dept. of Zool., Univ. of California, BERKELEY 4, Cal., U.S.A. a. Determination of neural plate, lens, and hypophysis. Hyla regilla (Anura) b. Electron microscopy of induction systems. Hyla regilla (Anura) c. Development of parietal eye. Sceloporus occidentalis (Lacertilia) d. Development of stirnorgan. Hyla regilla (Anura) EAYRS, J .T. B.Sc, Ph.D., D.Sc. — Dept. of Anat., Med. School, Birming- ham Univ., Edgbaston, BIRMINGHAM 15, England a. Effects of hormones on central nervous development. (Rodentia) EBERT, J. D. Ph.D., F.I.I.E. — Dept. of Embryol., Carnegie Inst, of Wash- ington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Biochemical and immunochemical analysis of the synthesis and distri- bution of the contractile proteins, actin, myosin and tropomyosin in the development of the heart in the early embryo. Gallus gallus (Aves) b. The metabolic characteristics of the heart-forming areas of the early embryo. Gallus gallus (Aves) c. Immunological studies of melanogenesis; immunochemical properties of the melanins; melanoproteins. The chemistry of the pigment-forming area in the early embryo. Gallus gallus (Aves) d. Analysis of the effects of adult or late embryonic tissue transplants (chorioallantoic, intra-coelomic) on the differentiation and growth of the homologous tissues of the host embryo. Gallus gallus (Aves) 1. Selective transfer of radioactivity from grafts to homologous host tissues. 2. Fractionating and identification of organ-specific growth regulatory substances (inhibitory, stimulatory). 3. Growth regulation in normal and decapitated embryos. e. The graft-versus-host reaction and development of immune mechanisms in the embryo. Gallus gallus (Aves) f. Animal viruses (esp. tumor viruses) as tools in studying embryonic in- duction. Gallus gallus (Aves) EBLING, F. J. M.Sc, Ph.D. — Dept. of Zool., Univ. of Sheffield, SHEF- FIELD, England a. Factors affecting activity of hair follicles. Rattus rattus (Rodentia) EDDS. M. V., Jr. B.A., M.A.. Ph.D., M.I.I.E. — Arnold Biol. Lab., Brown Univ., PROVIDENCE 12, R.I., U.S.A. 40 a. Development of collagenous lamellae. Rana pipiens (Anura) EDE. D. A. B.Sc., M.S., Ph.D. — Wye Coll., Near ASHFORD, Kent, England a. Developmental genetic studies. Dermestes maculatus (Coleoptera) b. Effects of lethal genes on embryonic development. Gallus domesticus (Aves) c. Effects of tumour-inducing viruses on embryonic and early development. Gallus domesticus (Aves) (in collaboration with W. A. KELLY) d. Effects of mutant genes on embryonic development. Mus musculus (Ro- dentia) (in collaboration with }. R. HINCHLIFFE) EDSTROM, J.-E. — Dept. of Histol., Univ. of Goteborg, Medicinaregatan 5, GOTEBORG SV, Sweden EDWARDS, R. G. B.Sc, Ph.D. — Nat. Inst, for Med. Research, Mill Hill, LONDON N.W.7, England a. The effects of antisera on fertilization and development. (Mammalia) b. The development of heteroploid and hybrid embryos. (Mammalia) EGELHAAF, A. Dr.rer.nat. — Zool. Inst, der Univ. Tubingen, Holderlin- str. 12, TUBINGEN, Deutsche Bundesrepublik a. Genetische Grundlagen der Differenzierung von Augenpigmenten. Ephestia spec. (Lepidoptera) b. Phanokopien. Ephestia spec. (Lepidoptera) EGUCHI, G. B.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Electron microscope studies on lens regeneration. Triturus pyrrhogaster (Urodela) EHN, J. A. Fil.mag. — Zool. Inst., Uppsala Univ., UPPSALA, Sweden a. Animalization and vegetalization of the embryo by means of chemical agents. Agelena labyrintica ( Arachnoidea) EKMAN, Miss K. B.S.— Dept. of Zool., Univ. of Connecticut, STORRS, Conn., U.S.A. a. Xantine dehydrogenase activity in developing kidney. Gallus domesticus (Aves) ELBERS, P. F. Ph.D. — Centrum voor Electronenmicroscopie, Janskerkhof 3, UTRECHT, Netherlands ELSDALE, T. R. B.Sc, Ph.D. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Small aggregate cultures of embryonic cells. Rana pipiens (Anura) EMANUELSSON, H. Fil.lic — Zoophysiol. Inst., Univ. of Lund, LUND, Sweden ENDO, Y. M.Sc — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Electron microscopical study of fertilization and development. (Echi- noidea) ENEMAR, E. A. W. Fil.lic. — Embryol. Dept., Zool. Inst, of the Univ. of Lund, LUND, Sweden ENGELBRECHT, D. van Z. D.Sc — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLENBOSCH, South Africa (no embryological work in progress) ENGLANDER, H. Dr. med.. Dr.rer.nat., M.I. I.E. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KoLN-Lindenthal, Deutsche Bundesrepublik a. Regionalspezifische Induktion. (Urodela) 41 Ere-Fin ERENQIN, Z. Med.Veter.Dr., Prof. — Inst, of Histol. and Embryol., Veter. Coll. of the Univ., ANKARA. Turkey (no embryological work in progress) ERHART, E. A. M.D. — Section of Neuroanat, Dept. of Anat., Fac. of Med., Univ. of Sao Paulo, Caixa Postal 100-B, SAO PAULO, Brazil a. Regeneration after transection of the embryonic spinal cord. Gallus spec. (Aves) EYAL (GILADI), Mrs. H. M.Sc, Ph.D. — Dept. of Zool., Hebrew Univ., JERUSALEM, Israel EYRIES, Ch. Dr. en Med. — Lab. d'Anat. fonctionelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Oreille interne et complexe acoustico-facial. Homo sapiens (Primates) FAASSEN, F. van Dr. — Anat.-Embryol. Lab., Free Calvinistic Univ., Prins Hendriklaan 27, AMSTERDAM Z., Netherlands FABER, J. Ph.D. — Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. Semi-quantitative studies on the self-differentiation of transplanted limb regeneration blastemas and parts of blastemas. Ambystoma mexicanum (Urodela) b. The mode of growth of the tail regeneration blastema as studied by carbon marking. Ambystoma mexicanum (Urodela) c. Regeneration of defective tails. Ambystoma mexicanum (Urodela) FALAKALI, M. S. M.D. — Morfologi Enstitiisu, Tip Fakiiltesi, Ege Uni- versitesi, Bornova, IZMIR, Turkey — temporarily: Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. A quantitative analysis of the distribution of the neural crest along the margin of the neural plate, and its relation to the regional width of the neural plate and the intensity of the inducing actions emanating from the archenteron roof. (Amphibia) FANKHAUSER, G. Ph.D., F.I.I.E., Prof. — Dept. of Biol., Princeton Univ., Box 704, PRINCETON, N.J., U.S.A. a. Development of diploid and heteroploid embryos implanted under the skin of adults. Triturus spec. (Urodela) b. Constancy of somatic chromosome numbers. (Urodela) c. Biochemical comparison of diploid and polyploid larvae. (Urodela) d. Biochemistry of metamorphosis. Triturus viridescens (Urodela) FARINELLA (FERRUZZA), Mrs. N. Dr.— 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Xenoplastic tailbud transplantations. (Amphibia) b. Combinations and transplantations of blastomeres. (Ascidiae) FAURfi-FREMIET, E. Dr., F.I.I.E.. Prof. hon. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France FAUTREZ, J. C. M.D., Member of the Royal Flemish Acad, of Sci., M.I.I.E., Prof. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1, GENT, Belgium a. Limb and heart development. (Amphibia) b. Early development of the egg. Artemia salina (Phyllopoda, Crustacea) FAUTREZ (FIRLEFYN), Mrs. N. J. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1, GENT, Belgium 42 a. Histochemistry and submicroscopical structure of the egg. Artemia salina (Phijllopoda, Crustacea) b. The effect of sulfhydryl inhibition and thiol-compounds on the develop- ment of the egg. Artemia salina (Phyllopoda, Crustacea) c. Mitosis and cytodieresis in the egg. Artemia salina (Phyllopoda, Crus- tacea) FEDOROFF. S. M.A., Ph.D. — Dcpt. of Anat., Univ. of Saskatchewan. SASKATOON, Saskatchewan, Canada a. Chemical changes in embryonic and adult tissues due to chilling. b. Serum toxicity tested on cell cultures. c. Genetics of congenital diseases. d. Cytolysis and cytocidal systems. FELDMAN, M. M.Sc, Ph.D., M.I.I.E. — Dept. of Exper. Biol., Weizman Inst, of Sci., REHOVOTH, Israel FELL, Miss H. B. Dr., F.I. I.E. — Strangeways Research Lab., Wort's Causeway, CAMBRIDGE, England FELTS, W. J. L. A.B., A.M., Ph.D. — Dept. of Anat., School of Med., Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. a. Skeletal growth and development. b. Effects of mechanical factors on bone and cartilage growth. c. Density and inorganic/organic ratio in developing skeleton. (Rodentia) d. Skeletogenesis in marine forms. (Mammalia) e. Effects of high gravities on overall growth and upon development of skeletal system. (Rodentia) FICQ, Mrs. A. A. Dr. en Sci. Biol., M.I.I.E. — Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES- Auderghem, Belgique a Etude autoradiographique du metabolisme au cours de l'oogenese. Aste- rias spec. (Asteroidea, Echinodermata) , Rana spec. (Anura) b. Observations autoradiographiques sur l'oogenese et la morphogenese. Pleurodeles spec, Triturus spec. (Urodela) , Rana fusca (Anura) c. Metabolism of purines and pyrimidines during oogenesis and develop- ment. Paracentrotus spec. (Echinoidea) , (Amphibia) FILOGAMO, G. Dr., M.I.I.E., Prof. — 1st. di Anat. umana, Fac. di Med., Corso Massimo d'Azeglio 52, TORINO, Italia a. Correlazioni interneuronichi e neuro-muscolari nello sviluppo postnatale. Gallus domesticus (Aves) b. Sulla sede delle placca motrice, nello sviluppo della coda normale e rige- nerata. Lacerta muralis muralis (Lacertilia) c. Sur la symetrisation de l'oeuf. (Vertebrata) FILOSA, M. F. B.S., M.S., Ph.D. — Oberlin Coll., OBERLIN, Ohio, U.S.A. a. Variation and differentiation; effects of various analogues on differentia- tion. Dictyostelium mucoroides (Acrasiales) FIMIAN, W. J., Jr. A.B., M.S., Ph.D., Assoc. Prof. — Dept. of Biol., Boston Coll., CHESTNUT HILL 67, Mass., U.S.A. a. X-radiation and chemical pre-protection in limb regeneration (in vivo and in vitro). Triturus viridescens (Urodela) FINAMORE, F. J. B.A., M.S.. Ph.D. — Physiol. Dept., Nucleic Acid Met- abolism Lab., Southern Illinois Univ., CARBONDALE, 111., U.S.A. 43 Fin-Fou FINGER, I. B.A., Ph.D. — Dept. of Biol., Haverford Coll., HAVERFORD, Pa., U.S.A. a. Immunogenetic studies in relation to cell differentiation. Paramecium aurelia (Ciliata) FINNEGAN, C. V. B.S., M.S., Ph.D. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada a. Possible reciprocal relationships between limb and girdle. (Vertebrata) b. Examination of the exudates produced by differentiating mesoderm and mesectoderm both in vitro an in vivo, utilizing histochemical, cytochemical and immunobiological techniques. (Vertebrata) FISCHBERG, M. Dr.Phil. (Zurich), M.A. (Oxford), F.I. I.E. — Inst, de Zool. et Anat. comp., Rue de Candolle, GENEVE, Suisse FITZGERALD, L. R. Ph.D. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Effects of temperature on neonates and development of thermoregulatory mechanisms. Mus musculus ( Rodentia) b. Metabolic characteristics of the neonatal period. Mus musculus (Ro- dentia) c. Oxygen consumption of embryos. Mus musculus (Rodentia) FLECHON, J. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Etude autoradiographique du metabolisme des acides nucleiques. Bombijx mod, Galleria melonella (Lepidoptera) FLEISCHHAUER, K. Dr. med. — Anat. Inst, der Univ. Kiel, Neue Univ., Eingang Fl, (24b) KIEL, Deutsche Bundesrepublik FLEXNER, L. B. B.S., M.D., M.I.I.E., Prof. — Dept. of Anat., School of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A. FLICKINGER, R. M.I. I.E. — Dept. of Zool., State Univ. of Iowa, IOWA CITY, Iowa, U.S.A. a. Effect of antisera upon developing embryos. Rana pipiens (Anura) FLYNN, T. THOMSON D.Sc, M.B.E., F.I.I.E., Prof. — Dept. of Zool. and Comp. Anat., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Development of the neural crest. (Mammalia) b. Placentation. (Marsupialia) c. Development. Pedetes spec. (Rodentia) FOLLENIUS, E. Dr. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Origine de la lignee germinale, morphogenese et differenciation des gonades. Xiphophorus Helleri, Lebistes reticulatus, Barbus spec. (Te~ leostei) b. Etude cytologique des differentiations hypophysaires au cours de la morphogenese et de la differenciation genitale. Lebistes reticulatus, Xiphophorus Helleri, Gasterosteus aculeatus (Teleostei) FONSECA SACARRAO, G. da Dr.Sc, Prof. — Museu e Lab. Zool., Fac. de Ciencias, Univ. de Lisboa, LISBOA, Portugal a. Development of the epistellar body. Octopus spec, Argonauta spec. (Cephalopoda) b. Development of the statocyst. (Cephalopoda) 44 c. Comparison between the ontogenies of two orders and its bearing on the problem of the evolution of these orders. (Decapoda and Octopoda, Cephalopoda) d. Study of the ontogeny as compared with the development of other Molluscs. (Cephalopoda) FOOTE. Ch. L. B.S., M.S.. Ph.D.. M.I.I.E. — Dept. of Zool., Southern Il- linois Univ., CARBONDALE, 111., U.S.A. a. Growth and maintenance of newly hatched larvae in organ cultures. Pleurodelcs waltlii (Urodela) (in collaboration with Mrs. F. MARTIN- DALE FOOTE) b. Growth and maintenance of gonads of metamorphosing larvae in organ cultures. Pleurodeles waltlii (Urodela) (in collaboration with Mrs. F. MARTINDALE FOOTE) c. Growth and maintenance of gonads on synthetic media, and on standard media composed of chick embryo extract and agar. Ambystoma mexica- num (Urodela) (in collaboration with Mrs. F. MARTINDALE FOOTE) FOOTE, Mrs. F. MARTINDALE B.A., M.A., Ph.D. — Dept. of Zool., Southern Illinois Univ., CARBONDALE, 111., U.S.A. a. Growth and maintenance of newly hatched larvae in organ cultures. Pleu- rodeles waltlii (Urodela) (in collaboration with Ch. L. FOOTE) b. Growth and maintenance of gonads of metamorphosing larvae in organ cultures. Pleurodeles waltlii (Urodela) (in collaboration with Ch. L. FOOTE) c. Growth and maintenance of gonads on synthetic media, and on standard media composed of chick embryo extract and agar. Ambystoma mexica- num (Urodela) (in collaboration with Ch. L. FOOTE) FORD, E. H. R. M.A., M.D. — Anat. School, Univ. of Cambridge, CAM- BRIDGE, England FORD, P. B.Sc, Ph.D., Prof. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada FORNI, Miss S. Med.Dott. — Cattedra di Istol. ed Embriol. gener., Fac. di Med. e Chir. dell'Univ. di Milano, Via Ponzio 7, MILANO, Italia a. Experimental development in v i t r o of the foetal and neonatal ovary, with addition of pituitary hormones. Mus rattus (Rodentia) FORSBERG, J.-G. Med.kand. — Dept. of Anat., Univ. of Lund, Biskops- gatan 7, LUND, Sweden a. Comparative investigations on the development of the vagina. (Mamma- lia) b. Hormonal influence on development of genital organs. Rattus spec. (Rodentia) FORTAK, W. — Inst, of Histol. and Embryol., Acad, of Med., Narutowicza 60, L6D2, Poland a. Liver regeneration. Rattus spec. (Rodentia) FOURCHE, J. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Le metabolisme respiratoire au cours du developpement. Drosophila melanogaster (Diptera) FOURMAN, Miss J. Dr. — Dept. of Anat., Univ. Coll., Newport Road, CARDIFF, Wales 45 Fourman-Fuk a. Development of intra-renal blood vessels, (in collaboration with. D. B. MOFFAT) FOWLER, J. A. B.S.E., M.A., Ph.D. — State Univ. of New York, Long Island Center, Oyster Bay, NEW YORK, N.Y., U.S.A. a. Development of hybrids. Rana pipiens (Anura) FOX, H. B.Sc, Ph.D. — Dept. of Zool. and Comp. Anat., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Quantitative analysis of development of pronephric components in larval forms. Ceratodus spec. (Dipnoi), Rana esculenta (Anura), various spp. (Urodela) b. Factors influencing pronephric growth. (Urodela) 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 heart. (Mammalia) (in collaboration with F. DAVIES, Dept. of Anat.) FRANCOIS, Y. Dr. es Sci. — Lab. d'Anat. et d'Histol., Fac. des Sci., 7 Quai St. Bernard, PARIS Ve, France a. Anatomy and morphogenesis of the fins and vertebrae. Salmo and other spp. (Teleostei) b. Action du D.N. P. sur l'oeuf. Salmo spec. (Teleostei) FRANK, Z. — Inst. d'Histol., Fac. de Med., Salata, ZAGREB, Yougoslavie a. Influence of high and low temperature on development. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB, Inst, de Biol., and B. DOMAC) FRANKENBERGER, Z. MUDr., Prof. — Embryolog. ustav lekafske fak., Univ. Karlovy, Albertov 4, PRAHA 2, Czechoslovakia a. Development of the skeleton, digestive tract and skin glands. (Cervidae, Artiodactyla) b. Sexual cycle. (Cervidae, Artiodactyla) FRANZEN, A. S. Fil.Dr. — Zool. Inst., Uppsala Univ., UPPSALA, Sweden a. Comparative study of the spermatozoon and spermatogenesis. (Everte- brata) FRASER, F. C. Ph.D., M.D. — Dept. of Genet., McGill Univ., MON- TREAL, Quebec, Canada a. The experimental production of congenital defects, chiefly by maternal treatment with cortisone and 6-aminonicotinamide. Mus musculus (Ro- dentia) b. Mechanism of embryonic palate closure, and factors that interfere with it. Mus musculus (Rodentia) FRASER, R. C. B.S., M.S., Ph.D. — Dept. of Zool. & Entomol., Univ. of Tennessee, KNOXVILLE 16, Tenn., U.S.A. a. Physiological studies of early embryogeny. Gallus domesticus (Aves) b. Tumor growth in embryonate systems. Gallus domesticus (Aves) c. Protein synthesis during liver growth. Gallus domesticus (Aves) d. Hemoglobin development during embryogenesis. Gallus domesticus (Aves) FREEMAN, G. — Dept. of Zool., Biol. Sci. Div., Univ. of Chicago, CHI- CAGO, 111., U.S.A. a. Regeneration in the eye. Xenopus laevis (Anura) (in collaboration with Mrs. J. H. OVERTON) 46 FREEMAN, Miss G. — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Histochemical demonstration of specific dehydrogenase during early development. Gallus domesticus (Aves) (in collaboration with B. S. WENGER) FRIANT, Mrs. M. Dr. es Sci., Dr. en Med., Membre honoraire de l'lnst. Grandducal de Luxembourg, Membre titulaire du G.I.R.S., Prof. — Ecole d'Anthropol. de P. Broca, 55 Rue de Buffon, PARIS Ve, France a. Development of the skeleton. (Reptilia; Aves; Mammalia) b. Development of the teeth. (Mammalia) c. Development of the brain. (Mammalia) d. Development of pterylosis. (Aves) e. Development of cartilage, bone and horn. (Vertebrata) FRIDBERG. G. Fil.lic. — Zool. Inst., Univ. of Stockholm, 70A Radmans- gatan, STOCKHOLM, Sweden a. Development of neurosecretory parts of brain, urophysis. (Teleostei) FRIEDMAN, H. — Dept. of Anat, Med. School, Univ. of Kansas, LAW- RENCE, Kansas, U.S.A. a. The development of species-specific and organ-specific antigens in em- bryos. Gallus domesticus, Anas boschas, Coturnix c. japonica (Aves) (in collaboration with B. S. WENGER) FRITSCH, J. P. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Hematopoi'ese. (Aves) (en collaboration avec A. DOLLANDER, G. CURY et Mrs. D. GASSIOLE) FROST, D. M.S. — Coll. of Pharmacy, Rutgers Univ., 1 Lincoln Ave., NEWARK 4, N.J., U.S.A. FRYE, B. E. B.S., M.S., Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. a. Removal and transplantation of the dorsal pancreatic rudiment in larvae: effect upon growth and differentiation of the pancreas and the larvae. Amby stoma punctatum, Eurycea bislineata (Urodela), Rana pipiens (Anura) b. Histochemical study of the differentiation of the islets of Langerhans in normal and cortisone-treated embryos. Gallus domesticus (Aves) c. Functional differentiation of the islets of Langerhans: islet growth and differentiation and blood sugar regulation by the larvae. Rana pipiens, R. clamitans (Anura) d. Growth and differentiation of the islets of Langerhans of hereditarily obese-hyperglycemic animals. Mus musculus (Rodentia) FUJII, S. D.Sc, Prof. — Biol. Inst., Kobe Univ., KOBE, Japan FUJII, T. Dr.Sci., M.I.I.E., Prof. — Zool. Inst, Fac. of Sci., Tokyo Univ., Bunkyo-ku, TOKYO, Japan a. The nucleolus and its possible role in mitosis, as seen in living cells. (Echinodermata; Mammalia) b. Inhibition of cell division by nicotinamide. (Echinodermata; Mammalia) FUKUSHI, T. F. B.Sc. — Asamushi Marine Biol. Station, Tohoku Univ., ASAMUSHI, Aomori Pref., Japan a. The role of the adhesiveness of the cell surface in morphological differ- entiation of embryonic cells. Hemicentrotus pulcherrimus (Echinoidea) 47 Ful-Gey FULTON, C. M. Ph.D. — Dept. of Biol, Brandeis Univ., WALTHAM 54, Mass., U.S.A. a. Factors affecting growth and growth patterns. Cordylophora spec, Hy- dra spec. (Hydroidea) b. Factors affecting morphological alteration. Naegleria spec. (Protozoa) FURUSAWA, M. M.Sc. — Dept. of Biol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a. Analysis of development and differentiation of the embryonic gonad with the method of organ culture. Mus musculus (Rodentia) GABIE (GUBBAY), Mrs. V. B.Sc, Ph.D. — Dept. of Zool., Univ. of the Witwatersrand, Milner Park, JOHANNESBURG, Republic of South Africa a. An investigation of the basal membrane in limb development by means of transplantation. (Anura) GAILLARD, P. J. Med.Dr., M.I.I.E., Prof. — Lab. for Cytol. and exper. Histol., Fac. of Med., State Univ., Rijnsburgerweg 10, Boerhaavekwar- tier, LEIDEN, Netherlands a. Functional activity of the parathyroid gland in the embryo. Gallus gallus (Aves) GALLERA, J. Ph.D., M.I.I.E. — Lab. d'Embryol. exper., Inst. d'Anat., Fac. de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENEVE, Suisse a. Etude experimental sur le developpement histogenetique du systeme nerveux. (Amphibia; Aves) b. Etude experimental sur l'induction du systeme nerveux par la methode de greffes et d'explantation. (Amphibia; Aves) GALLIEN, L. Dr. es Sci., F.I.I.E., Prof. — Lab. d'Embryol., Fac. des Sci., Univ. de Paris, 12 Rue Cuvier, PARIS Ve, France GANGULY, B. M.Sc, D.Phil. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Factors in surface mobilisation in amoebocytes. (Porifera) b. Physiology of cell-contact. (Porifera) (in collaboration with S. BANER- JEE, D. LAHIRI and S. MOOKERJEE) GANGULY, D. N. M.Sc, D. Phil. — Cell Research Unit, Dept. of Zool, Calcutta Univ., 35 Ballygunje Circular Road, CALCUTTA 19, India GASSIOLE, Mrs. D. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Hematopoiese. (Aves) (en collaboration avec A. DOLLANDER, J. P. FRITSCH et G. CURY) GATES, A. H. Ph.D. — Dept. of Obstetrics & Gynecol., Stanford Univ. Med. School, PALO ALTO, Cal., U.S.A. a. Genetic influences on viability and developmental capacity of ova. Mus musculus (Rodentia) b. Genetic influences on ovarian development. Mus musculus (Rodentia) GAWRON6WNA, Miss M. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool, Uniw. we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Poland GAYET, J. F. Dr. es Sci., Prof. — Inst, de Physiol. Gener., 15 Place Carnot, NANCY (Meurthe & Moselle), France a. Recherches experimentales sur le developpement biochimique et fonction- nel des lobes optiques. Gallus domesticus (Aves) 48 b. Recherches experimentales sur la chronologie du developpement bio- chimique au niveau de l'encephale. Gallus domesticus (Aves) (en colla- boration avec J. SCHWANDER) c. Recherches experimentales sur le developpement cytochimique des lobes optiques. Gallus domesticus (Aves) (en collaboration avec Miss A. BONICHON) d. Recherches experimentales sur la biochimie et la biophysique des gra- nules cytoplasmiques isoles du systeme nerveux central au cours du developpement embryonnaire. (Aves) GAZE, R. M. B.A., L.R.C.P.E., L.R.C.S.E., D.Phil. — Dept. of Physiol., Univ. of Edinburgh, Univ. New Buildings, Teviot Place, EDINBURGH 8, Scotland a. Functional aspects of regeneration of the optic nerve. Xenopus laevis, Rana temporaria (Anura) GEBHARDT, D. O. E. Ph.D. — Hubrecht Lab., Intern. Embryol. Inst., Jans- kerkhof 2, UTRECHT, Netherlands a. Action of metabolites and antimetabolites on induction. Ambystoma mexi- canum, Xenopus laevis (Amphibia) GEIGER, H. R. Dipl.Zool. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kiinstlergasse 16, ZURICH, Schweiz GEIGY, R. Dr., Prof. — Schweiz. Tropeninst., Socinstr. 57, BASEL, Schweiz — Zool. Anstalt der Univ., Rheinsprung 9, BASEL, Schweiz a. Endocrinologie der Metamorphose (Xenoplastische Transplantation in- duktiver Organe). (Insecta) b. Spermatogenese, Ovogenese und Embryonalentwicklung. (Argasidae, Acarina, Arachnoidea; Isopteva) c Obertragung von Spirochaetosen iiber das mutterliche Ovarium auf die Embryonen und damit auf die Nachkommen der nachsten Generation. (Ixodidae, Acarina, Arachnoidea) d. Gewebeziichtung. (Arthropoda) GEILENKIRCHEN, W. L. M. Ph.D. — Zool. Lab., State Univ., Janskerk- hof 3, UTRECHT, Netherlands a. Metabolism and respiration of egg and embryo. Limnaea stagnalis (Gastropoda) b. Influence of various kations on development. Limnaea stagnalis (Gastro- poda) (in collaboration with Chr. P. RAVEN) c. Influence of various factors on mitosis and cleavage. Limnaea stagnalis (Gastropoda) (in collaboration with E. D. NIJENHUIS and Chr. P. RAVEN) GEORGE, J. C. Ph.D., Prof., F.Z.S., F.Z.S.I. —Dept. of Zool, Univ. of Baroda, BARODA 2, India a. Physiology of development. Limnaea spec. (Gastropoda) , Gallus spec. (Aves) GERARD, P. M.D., F.I.I.E., Prof, honor. (Emer.) — Fac. de Med. de l'Univ., 97 Rue aux Laines, BRUXELLES, Belgique GEYER (DUSZYNSKA), Mrs. I. Dr. — Dept. of Cytol., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a. Genetic significance of the chromosomes of the germ line. (Cecidomyi* dae, Diptera) b. Effects of ionizing radiation on chromosomes. (Diptera) 49 Geyer-Goe c. Experimental studies on germ line chromosomes. Further studies on the fate of germ cells with somatic chromosome number. (Cecidomqidae, Diptera) d. The cytological analysis of the T-locus. Mus musculus (Rodentia) GHIRARDELLI, E. Dr., Prof. — 1st. di Zool., Via S. Giacomo 9, BO- LOGNA, Italia a. Oogenesis and RNA cycle. Spadella cephaloptera (Chaetognatha) b. Experimental analysis of the development of the gonad and Bidder's organ. Bufo spec. (Anura) GIDHOLM, L. Fil.lic. — Zool. Inst., Uppsala Univ., UPPSALA, Sweden a. Larval development. (Syllidae) GILBERT, P. W. A.B., Ph.D., M.I.I.E., Prof. — Dept. of Zool., Cornell Univ., ITHACA, N.Y., U.S.A. a. Studies on reproductive habits and structures, especially the clasper mechanism and the function of the siphon sacs. (Elasmobranchii) b. Gestation and parturition in representative species. Urolophus jamai- ciensis, Dasyatis americana (Elasmobranchii) c. Studies on sense organs and behavior. (Elasmobranchii) GILES, E. T. M.Sc, Ph.D., D.I.C. — Dept. of Zool., Univ. of New Eng- land, ARMIDALE 5 N., N.S.W., Australia a. Postembryonic development of reproductive organs and genitalia. Labi- dura riparia truncata (Dermaptera) GINSBURG, Mrs. A. S. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Cytology of fertilization and cleavage. Huso huso, Acipenser gulden- stadti, A. stellatus ( Acipenser idae, Chondrostei) , Salmo trutta, Core- gonus lavaretus (Salmonidae, Teleostei) , Lebistes reticulatus, Xipho- phorus helleri (Poecilidae, Teleostei) b. Experimental analysis of the block to polyspermy. Huso huso, Acipenser guldenstadti (Acipenseridae, Chondrostei), Salmo trutta (Salmonidae, Teleostei) c. Study of the acrosomal reaction. (Acipenseridae, Chondrostei) (in col- laboration with Mrs. T. A. DETTLAFF) GINZBURG, G. I. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Distribution and synthesis of nucleic acids during oogenesis. GIPOULOUX, J. D. — Lab. de Biol, anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, TALENCE (Gironde), France a. Etude experimentale de la morphogenese de l'appareil genital. (Anura) b. Evolution des cellules germinales. (Anura) GIROUD, A. F.I.I.E., Prof. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Recherches sur l'influence teratogene des avitaminoses maternelles. Mus rattus (Rodentia) b. Recherches sur l'influence teratogene des intoxications maternelles. Mus rattus, Mus musculus. Cavia cobaya (Rodentia), Oryctolagus cuniculus (Lagomorpha) c. Etude des cas teratologiques individuels. Homo sapiens (Primates) d. Developpement anormal du systeme nerveux. Mus rattus, Mus musculus (Rodentia) 50 e. Differenciation de l'epiderme. Mus rattus (Rodentia) GITLIN. G. B.Sc. Ph.D., M.B., Ch.B. — Dept. of Anat., Hadassah Med. School, Hebrew Univ., P.O. Box 1172, JERUSALEM, Israel a. Injection of brain extracts into pregnant animals: effect on embryos. Mus noruegicus albinus (Rodentia) b. Regeneration of bone following limb amputation in young animals. Mus norvegicus albinus (Rodentia) GIUDICE, G. M.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 22, PALERMO, Italia a. Protein synthesis during early development. Paracentrotus lividus (Echinoidea) GLAS, P. M.Sc. — Dept. of Anat. and Embryol., State Univ., Oostersingel 69, GRONINGEN, Netherlands a. Development of the corpus callosum. Mus musculus albinus (Rodentia) GLASS, A. B.Sc, M.B., Ch.B. — Dept. of Anat., Med. School, Univ. of Bir- mingham, Edgbaston, BIRMINGHAM 15, England GLASS, Miss L. E. A.B., Ph.D. — Dept. of Anat, Univ. of California School of Med., SAN FRANCISCO 22, Cal., U.S.A. a. Immunological, immuno-histological and electrophoretic studies on the inter-relation between maternal serum macromolecules, and oocyte or embryonic and fetal macromolecules of developmental significance. (Mammalia) b. Use of transplantation techniques to study the development of eggs X-irradiated in vitro before fertilization and at various pre-implanta- tion stages after fertilization. (Mammalia) GLENISTER, T. W. M.B., B.S., Ph.D., M.I.I.E. — Dept. of Anat, Charing Cross Hosp. Med. School, 62—65 Chandos Place, LONDON W.C. 2, England a. Reaction of genital tract tissues to hormones in vitro. (Mammalia) b. Implantation. (Mammalia) c. The early embryology. Macrorhinus spec. (Pinnipedia) d. Activation of spermatozoa with gonadotrophins. (Amphibia; Mammalia) e. Experimental nidation in organ culture. (Mammalia) GLIMSTEDT, G. Med.Dr., Prof . — Tornblad-Inst. for comp. Embryol., Biskopsgatan 7, LUND, Sweden (no embryological work in progress) GLOOR, H. J. Ph.D., Prof. — Genet. Lab., State Univ., 5e Binnenvestgracht 8, LEIDEN, Netherlands a. Differentiation in imaginal discs. Drosophila melanogaster (Diptera) GODINA, G. Prof. — 1st. di Anat. veter., Via Nizza 52, TORINO, Italia a. Researches on the differentiation and growth in vitro of the neurons of the embryonic nervous centres. Gallus domesticus (Aves) b. Various growth modalities of the neurites in i n v i t r o explants of nervous tissue. Gallus domesticus (Aves) c. Histogenesis and morphogenesis of the hippocampus. Ovis aries (Artio- dactyla) d. Mitochondria and lipochondria in cells cultured in vitro. Gallus domesticus (Aves) GOEDBLOED, J. F. Med.Dr. — Anat-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands 51 Goedbloed-Gre a. Development of the ear and the tympanic cavity. Homo sapiens (Pri- mates) GOFF, R. A. B.S., M.S., Ph.D. — Dept. of Zool., Univ. of Oklahoma, NORMAN, Okla., U.S.A. a. Analysis of the development of the appendicular skeleton by means of X-rays. Gallus domesticus (Aves) GOLDBERG, E. Ph.D. — Dept. of Biol., W. Virginia Univ., MORGAN- TOWN, W.Va., U.S.A. a. Physiology and biochemistry of germ cells. (Mammalia) b. Physiology and biochemistry of cell senescence. GOLDIE, M. Ph.D. — Dept. of Physiol., Coll. of Osteopathic Med. and Surgery, DES MOINES 9, Iowa, U.S.A. a. Morphogenesis of the tail. Gallus domesticus (Aves) b. Histological analysis of the development of the rumpless phenocopy. Gal- lus domesticus (Aves) c. Site of action of factors inducing the rumpless phenocopy. Gallus domes- ticus (Aves) GOMOT. L. Dr. es Sci. — Lab. de Zool., 1 Avenue Vercingetorix, CLER- MONT-FERRAND, France a. Developpement embryonnaire de la glande uro-pygienne. (Aves) (en collaboration avec H. LUTZ) GOODRICH, H. B. B.S., M.A., Ph.D., D.Sc, Prof. (Emer.) — Shanklin Lab. of Biol., Wesleyan Univ., MIDDLETOWN, Conn., U.S.A. a. Further experiments on factors involved in the development of color patterns. Brachydanio redo (Cyprinidae, Teleostei) GOSS, R. J. A.B., A.M., Ph.D. — Arnold Biol. Lab., Brown Univ., PROVI- DENCE 12, R.I., U.S.A. a. Fin and taste barbel regeneration. Ameiurus spec. (Pisces) b. Regeneration of lower jaws. Triturus spec. (Urodela) c. Morphogenesis and regulation in limb regenerates. Triturus spec. (Uro- dela) d. Regeneration of scales. Fundulus heteroclitus (Teleostei) e. Antler growth. Odocoileus borealis (Cervidae, Artiodactyla) GOSZWALD, K. Dr.phil., Dr.habil. rer. nat., Prof. — Inst, fur Angewandte Zool. der Univ., Naturw. Fak., Rontgenring 10, WORZBURG, Deut- sche Bundesrepublik a. Development. (Formicinae, esp. Formica rufa group, Hymenoptera) GOTHIE, Miss M. M. C. S. M.D., Dr. es Sci. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 1 1 1 Rue L. M. Nordmann, PARIS XIII, France GOTO, T. M.A. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Studies on the purification of fluorescent substances and on their biol- ogical meaning. (Amphibia) b. Studies on the influence of pterin substances upon development. Bombyx mori (Lepidoptera), Rana nigromaculata (Anura) GOTTSCHEWSKI, G. H. M. Dr., Prof. — Abt. f. Entw. physiol., Max Planck Inst. f. Tierzucht, MARIENSEE (20a), iiber Neustadt a. Ruben- berge, Deutsche Bundesrepublik a. Development of eye-cataract caused by a dominant gene in vitro. Mus domesticus (Rodentia) 52 GOUBE de LAFOREST, P. Dr. en Med. —Lab. cTEmbryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Application des cultures d'organes in v i t r o a la culture des virus. GRABOWSKI, C. T. B.S., Ph.D. — Dept. of Zool. Univ. of Miami, CORAL GABLES, Florida, U.S.A. a. Experimental analysis of induction and early development of the central nervous system. Gallus domesticus (Aves) b. Role of Hensen's node in early development. Gallus domesticus (Aves) c. Development of the notochord forming system. Gallus domesticus (Aves) d. Teratological effects of hypoxia. Gallus domesticus (Aves) e. Morphogenetic and biochemical analysis of effects of hypoxia on the embryo. Gallus domesticus (Aves) GRANT, Ph. M.A., Ph.D. — Dept. of Pathobiol., School of Hygiene and Public Health, Johns Hopkins Univ., BALTIMORE 5, Md., U.S.A. GRAUMANN, W. Dr. Med., Prof. — Anat. Inst, der Univ., Friedrichstr. 24, GIESSEN, Deutsche Bundesrepublik GRAY, D. J. B.S., M.S., Ph.D. — Dept. of Anat., School of Med., Stanford Univ., STANFORD, Cal., U.S.A. a. Prenatal development of bone. (Aves), Homo sapiens (Primates) GRAY, Sir J. Prof. — Univ. Museum of Zool., Univ. of Cambridge, Dow- ning St., CAMBRIDGE, England GRECA, M. LA Dr. Nat. Sci., Prof. — 1st. di Zool. dell'Universita di Cata- nia, Via Androne 25, CATANIA, Italia a. Istologia e citologia delle gonadi, con particolare riferimento alia vitello- genesi. (Orthoptera) b. Rigenerazione, con particolare riferimento ai blastemi regenerativi. (Po~ lychaeta) GREEN, Mrs. E. UFFORD A.B., M.A., Ph.D. — Dept. of Biol., Haverford Coll., HAVERFORD, Pa. U.S.A. a. Morphological, cytological and cytochemical studies of the effects of carcinogens on early development and larval growth. Rana spec. (Anuara) b. Studies of mitotic and intermitotic times in embryos and tadpoles as related to age and to sizes of cells and nuclei. Rana pipiens (Anura) c. Analysis of nucleic acid base composition in relation to development and differentiation. Rana pipiens (Anura) GREEN, Mrs. M. C. Ph.D. — Roscoe B. Jackson Memorial Lab., BAR HARBOR, Me., U.S.A. a. Developmental genetics. Mus musculus (Rodentia) GREGG, J. R. B.S., Ph.D., M.I.I.E. — Dept. of Zool., Duke Univ., DUR- HAM, N.C., U.S.A. a. Metabolism of normal animals and hybrids. Rana pipiens, R. pipiens ? x R. sylvatica $ (Anura) b. Metabolism of normal and hybrid tissue-breis. Rana pipiens, R. pipiens 2 x R. sylvatica $ (Anura) GRELL, K. G. Dr.rer.nat., Prof. — Zool. Inst, der Univ. Tubingen, Holder- linstr. 12, TUBINGEN, Deutsche Bundesrepublik a. Entwicklung und Fortpflanzung. (Protozoa and lower Metazoa) 53 Gri-Hag GRIGNON, G. Lie. es Sci. — Lab. d'Histol., Fac. de Med., 31 Rue Lion- nois, NANCY (Meurthe & Moselle), France a. Developpement de l'hypophyse. (Aves) (en collaboration avec G. CURY, Lab. d'Embryol.) GROBSTEIN, C. Ph.D., M.I.I.E. — Dept. of Biol. Sci., Stanford Univ., STANFORD, Cal., U.S.A. GRODZINSKI, Z. Mr., M.I.I.E., Prof. — Zaklad Anat. Porownawczej U. J. ira H. Hoyera, sw. Anny 6, KRAKOW, Poland a. Pulsation of embryonic hearts. (Teleostei) b. Yolk. (Acipenseridae) c. Circulation of blood in embryonic vessels. Salmo trutta (Teleostei) GROENENDIJK (HUIJBERS), Mrs. M. M. M.D., D.Sc — Dept. of Anat., Univ. of Saskatchewan, SASKATOON, Saskatchewan, Canada a. Characteristics and source of the embryonic gonadal hormones, by means of embryonic castration and hormone treatment. Gallus domesticus (Aves) b. Interrelation between gonads and pituitary gland of the embryo. Gallus domesticus (Aves) GROSCH, D. S. B.S., M.S., Ph.D. — Genetics Dept., North Carolina State Coll., 353 Gardner Hall, RALEIGH, N.C., U.S.A. a. Egg production and survival of embryos after mother has been fed enzyme inhibitors, antimetabolites and related compounds; without and with irradiation. Habrobracon spec. (Hymenoptera) GRUCA, St. Mgr.biol. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. The dedifferentiating influence of estrogens. (Mammalia) b. The regeneration (transplantation) of the thyroid gland. Cavia cobaya (Rodentia) GRONEBERG, H. Ph.D., M.D., D.Sc, F.R.S., F.I.I.E., Prof. — Dept. of Genet., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Developmental genetics of the axial and appendicular skeleton; effects of major genes. Mus musculus (Rodentia) GRONTHAL, E. Dr., Prof. — Hirnanat. Inst, der Psychiatr. Univ. Klinik, Med. Fak., Bolligenstr. 117, Waldau, BERN, Schweiz GUARDABASSI, Miss A. Dr. — Inst, of comp. Anat., Via Giovanni Giolitti 34, TORINO, Italy a. The behaviour of hypophysis, thyroid and parathyroids of tadpoles after treatment with Ca-glycerophosphate. Bufo b. bufo (Anura) b. The hypophysis after removal of the hypothalamic neurosecretory cen- tres. Xenopus laevis (Anura) GUERRIER, P. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Etude microcinematographique du developpement. (Nematoda) GUILLAUD, N. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 1 1 1 Rue L. M. Nordmann, PARIS XIII, France GUILLON, N. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 111 Rue L. M. Nordmann, PARIS XIII, France GULLINE, Miss H. F. B.Sc. (Hons.) — Biophysics Lab., Univ. of Tasma- nia, HOBART, Tasmania, Australia 54 a. Relationships between physiological and bioelectrical polarity. Coleus blumei, Linum usitatissimum GURDON, J. B. M.A. — Dept. of Zool. and Comp. Anat., Univ. Museum, OXFORD, England GUSTAFSON, T. Fil.Dr., M.I.I.E., Prof. — Wenner-Gren's Inst, for exper. Biol, Norrtullsgatan 16, STOCKHOLM Va., Sweden a. Morphogenetic movements. (Echinoidea) b. Enzyme induction and repression in cell cultures. c. The effect of various antimetabolites on embryonic development. (Echi- noidea) GUTH, L. A.B., M.D. — Lab. of Neuroanat. Sci., NINDB, Nat. Inst, of Health, BETHESDA, Md., U.S.A. GUYENOT, E. Dr.Med., Dr.Sci., Prof. — Inst, de Zool. et Anat. comp., Univ. de Geneve, Rue de Candolle, GENEVE, Suisse (no embryological work in progress) GYEVAI, T. A. — Inst, of Histol. and Embryol., Med. Univ., Turzolto u. 58, BUDAPEST IX, Hungary GYLLENSTEN, L. J. W. Med.Dr. — Dept. of Histol., Karolinska Inst., Solnavagen 1, STOCKHOLM 60, Sweden a. Postnatal development of lymphatic system; endocrinological influences (thyroid, adrenals, thymus). Cavia cobaya (Rodentia) b. Physiological factors in the postnatal development of the visual cortex. Mus musculus (Rodentia) HACCIUS, Miss B. Dr., Prof. — Botan. Inst, der Univ., MAINZ, Deut- sche Bundesrepublik a. Beeinflussung der Entwicklung von Embryonen durch Chemikalien (Wachstumsregulatoren, z.B., 2,4-D., TIBA, .a NAA; Antimitotica, z.B. I.P.C., MH, Colchicin; Radiomimetica, z.B. N-Lost, TEM). Eranthis hiemalis ( Ranunculaceae) b. Untersuchungen uber die Entwicklungsvorgange an teratogen beeinfluss- ten Vegetationskegeln. HADORN, E. Dr.Phil., F.I.I.E., Prof. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kiinstlergasse 16, ZURICH, Schweiz HAGELIN, L. O. Fil.mag. — Zool. Inst., Univ. of Stockholm, 70A Rad- mansgatan, STOCKHOLM, Sweden a. Development of labyrinth organ. Petromyzon spec. (Cyclostomata) HAGET, A. Dr. es Sci., M.I.I.E., Prof. — Lab. de Zool. exper., Fac. des Sci. de Bordeaux, 40 Rue Lamartine, TALENCE (Gironde), France a. Analyse experimental de la morphogenese embryonnaire de la tete. Leptinotarsa spec. (Coleoptera) b. Role du systeme nerveux dans la morphogenese embryonnaire des pattes. Leptinotarsa spec. (Coleoptera) c. Recherches sur l'edification de la blastule et de la gastrule. Leptinotarsa spec. (Coleoptera) HAGGQVIST, G. Prof. — Dept. of Histol., Karolinska Inst., Solnavagen 1, STOCKHOLM 60, Sweden a. Uber die Einwirkung von schwerem Wasser auf die embryonale Ent- wicklung. Mus musculus (Rodentia) b. Uber die Entwicklung der roten Blutkorperchen bei tetraploiden Tieren. (Vertebrata) 55 Hag-Har HAGSTROM, B. E. Fil.Dr. — Wenner Gren's Inst, for exper. Biol., Norr- tullsgatan 16, STOCKHOLM Va., Sweden HAIGH, G. M.B., Ch.B. — Dept. of Anat., Fac. of Med., Univ. of Sheffield. SHEFFIELD, England a. Regeneration of basic cells in red bone marrow. (Mammalia) HALE L. J., Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Cell behaviour during growth and morphogenesis. (Hydrozoa) HALL E. K. Ph.D., D.Sc, M.I.I.E. — Dept. of Anat., School of Med., Univ. of Louisville, 101 West Chestnut St., LOUISVILLE 2, Ky., U.S.A. a. Drug effects on embryonic hearts (nicotine, physostigmine). Rattus nor- vegicus (Rodentia) b. Ion effects on embryonic hearts (potassium). Rattus norvegicus (Roden- tia) c. EKG of embryonic and fetal hearts. Rattus norvegicus (Rodentia) HALLIDAY, R. B.Sc, Ph.D. — Agr. Res. Council Unit of Embryol., Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caernarvonshire, Wales a. Immunological relations of mother and young. (Mammalia) HAMA, T. M.A., D.Sc, M.I.I.E., Prof. — Biol. Lab., Keio Univ., YOKO- HAMA, Hiyoshi, Japan a. Morphogenetical and chemical analysis of the organizer. Triturus pyrrho- gaster (Urodela) b. Studies on the influence of the pterins and their like upon development in various animals. (Arthropoda; Pisces; Amphibia; etc.) c. Developmental and chemical studies of the chromatophores. (Pisces; Amphibia) HAMANO, S. M.Sc, Dr.Sc. — Lab. of Physiol. & Ecol., Dept. of Biol., Fac. of Fish., Hokkaido Univ., HAKODATE, Japan a. Physico-chemical studies on activation and fertilization. (Teleostei) b. Study of phospholipid metabolism during development using P32. Salmo irideus (Teleostei) HAMBURGER, K. cand.mag. — Biol. Inst, of the Carlsberg Foundation, 16 Tagensvej, COPENHAGEN N, Denmark a. Studies on the biochemistry and physiology of synchronized cell systems. Tetrahymena pyriformis (Holotvicha, Ciliata) (in collaboration with E. ZEUTHEN and P. PLESNER) HAMBURGER, V. Ph.D., F.I.I.E., Prof. — Dept. of Zool., Washington Univ., ST. LOUIS 30, Mo., U.S.A. a. Neuro-embryology. Gallus domesticus (Aves) HAMDORF, K. Dr. — Inst, fur Fischereibiol. der Univ. Hamburg, Holsten- wall 24, HAMBURG 36, Deutsche Bundesrepublik a. Entwicklung unter verschiedenen Licht-, Temperatur- und 02-Bedingun- gen. Salmo irideus (Teleostei) HAMILTON, H. L. B.A., M.S., Ph.D., M.I.I.E., Prof . — Dept. of Zool. and Entomol., Coll. of Agriculture, 360 Science Building, Iowa State Univ., AMES, Iowa, U.S.A. a. Studies on the relation of enzyme systems to morphogenesis. Gallus domesticus (Aves) b. Factors influencing the differentiation of melanophores in tissue cultures. Gallus domesticus (Aves) 56 c. Effects of rare earth ions on development. Gallus domesticus (Aves) HAMILTON, Miss L. B.A. — Dept. of Biol, as Applied to Med., Middlesex Hosp. Med. School, Cleveland St., LONDON W. 1, England a. Analysis of haploid syndrome. Xenopus spp. (Anura) b. Morphogenesis of hybrid andromerogons. Xenopus spp. (Anura) c. Morphogenetic effects of homologous DNA. Ambystoma mexicanum (Urodela) HAMILTON, W. J. F.I. I.E., Prof. — Dept. of Anat., Charing Cross Hosp. Med. School, 62-65, Chandos Place, LONDON W.C. 2, England a. Growth and atresia of the ovarian follicles. Mustela putorius [uro (Car- nivora) (in collaboration with R. J. HARRISON, London Hosp. Med. Coll.) b. The development and structure of the placenta. Homo sapiens (Primates) (in collaboration with J. D. BOYD, Cambridge) HAMMERLING, J. Dr.phil., M.I.I.E., Prof. — Max Planck Inst, fur Mee- resbiol, Anton Dohrnweg, WILHELMSHAVEN 23, Deutsche Bundes- republik a. Nucleo-cytoplasmic relationships. Acetabularia spp. (Chlorophyceae) HAMMOND, W. S., Ph.D., M.I.I.E., Prof. — Dept. of Anat., School of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., U.S.A. a. Development of the visceral skeleton. Gallus domesticus (Aves) (in collaboration with C. L. YNTEMA) b. Origin of tongue musculature. Gallus domesticus (Aves) HAMPE, A. Dr.es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Etude de la regulation des ebauches des membres. Gallus gallus (Aves) b. Etude de la regulation du bourgeon de membre. Anas spec. (Aves) c. Etude du developpement du bourgeon de membre. Gallus gallus (Aves) HANAOKA, K. I. D.Sc, Prof. — Inst, of Endocrinol., Gunma Univ., Iwaga- mi-cho, MAEBASHI, Japan HANSON, E. D. A.B., Ph.D. — Shanklin Lab. of Biol., Wesleyan Univ., MIDDLETOWN, Conn., U.S.A. HAOUR, Miss F. Lic.es Sci. — Lab. de Zool. exper., Fac. des Sci.. 16 Quai CI. Bernard, LYON, France a. Metabolisme du Calcium. Arbacia lixula (Echinoidea) HARA, K. Ph.D. — Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. Neural induction. Gallus domesticus (Aves) HARKMARK, W. Dr.med. — Anat. Inst., Univ. of Oslo, Karl Johansgt. 47, OSLO, Norway a. The histogenesis of the cerebellum with special emphasis on the Purkinje cells. Gallus domesticus (Aves) b. The development of the hippocampus. Mus rattus (Rodentia), Balaenop- tera physalus (Cetacea) HARPER, M. J. K. Dip.Agric, B.A., M.A. — Pharmaceutical Div., Imp. Chem. Industr. Ltd., Alderley Park, MACCLESFIELD, Cheshire, Eng- land a. Ovum transport through the reproductive tract. Oryctolagus cuniculus (Lagomorpha) 57 Harper-Has b. Ovum development and implantation. Oryctolagus cuniculus (Lago- motpha) HARREBOMfiE, Miss A. E. — Div. of exp. Morphol., Anat.-Embryol. Inst., Municipal Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O., Netherlands a. Experiments on inductive processes in adult organisms. Ambystoma mexicanum (Urodela) (in collaboration with H. A. L. TRAMPUSCH) b. Analysis of dedifferentiation as precursor of regeneration. Ambystoma mexicanum (Urodela) (in collaboration with H. A. L. TRAMPUSCH) HARRIS, F. T. C. M.Sc. — Dept. of Biol, as Applied to Med., Middlesex Hosp. Med. School, Cleveland St., LONDON W. 1, England a. Studies of cleavage processes. b. Physiology of foetal and newborn kidney. Rattus rattus (Rodentia) (in collaboration with J. R. BEARN) c. An investigation of renal function during histogenesis in the late foetal and neonatal period by means of the uptake and autoradiographic locali- sation of K42. Rattus rattus (Rodentia) HARRIS, J. E. M.A., Ph.D., Prof. — Dept. of Zool., The University, BRISTOL 8, England HARRIS, J. W. S. M.B., B.S., Ph.D. — Anat. Dept., London Hosp. Med. Coll., Turner St., LONDON E. 1, England a. Morphological development of secondary palate. Rattus spec. (Rodentia) b. Placental vascular pattern. Homo sapiens (Primates) c. Development of trabecular portion of cranial base. Rattus spec. (Roden- tia) HARRIS, M. Ph.D., Prof. — Dept. of Zool., Univ. of California, BERKE- LEY 4, Cal., U.S.A. a. Tissue culture: protein growth factors; glycolysis, clone cultures and evolution of chromosome patterns; population dynamics and drug resis- tance. Gallus domesticus (Aves), Sus domestica (Artiodactyla) HARRIS, P. F. M.B., Ch.B. — Dept. of Anat., Fac. of Med., Univ. of Shef- field, SHEFFIELD, England, a. Regeneration of basic cells in red bone marrow. (Mammalia) HARRISON, G. A. B.A., B.Sc, D.Phil. — Dept. of Anat., Univ. of Liver- pool, LIVERPOOL 3, England a. Growth and genetical selection and high temperatures. (Mammalia) b. The inheritance of skin colour. Homo sapiens (Primates) c. The genetics of obesity. Mus spec. (Rodentia) HARRISON, J. R. B.A., M.A., Ph.D. — Dept. of Zool., Miami Univ., OXFORD, Ohio, U.S.A. — until July 1, 1962: Bowman Gray School of Med., Wake Forest Coll., WINSTON-SALEM, N.C., U.S.A. a. I n v i t r o studies on the growth and differentiation of the retinal pig- ment in the embryonic eye: analysis of developmental factors contained in the yolk-albumen of the egg. Gallus domesticus (Aves) b. Uptake of glucose by early primitive streak to early somite embryos studied by using isotope techniques. Gallus domesticus (Aves) HARRISON, R. G. M.A., D.M. — Dept. of Anat., Univ. of Liverpool, LIVERPOOL 3, England a. Factors influencing the process of spermatogenesis. (Mammalia) 58 HARRISON, R. J. M.A., D.Sc, M.D. — Anat. Dept.. London Hosp. Med. Coll., Turner St., LONDON E. 1, England a. Fine structure of the placenta. (Mammalia) b. Growth and atresia of the ovarian follicles. (Mammalia) (in collabora- tion with W. J. HAMILTON, Charing Cross Hosp. Med. School) c. Placentation and changes in reproductive tract. (Ceruidae; Phocidae) HARTE, Miss C. Dr., Prof. — Inst, fur Entwicklungsphysiol., Univ. zu Koln, Gyrhofstr. 17, KOLN-Lindenthal, Deutsche Bundesrepublik a. Influence of genes on pollentube growth (certation) and embryosac development. Oenothera spec. (Onagraceae), Antirrhinum spec. (Scro~ phulariaceae) b. Action of lethal genes on embryos and endosperm. Oenothera spec. (Onagraceae) c. Gene action in the development of leaves. Antirrhinum spec. (Scrophu- lariaceae) HARTUNG, E. W. Ph.D. — Dept. of Zool., Univ. of Rhode Island, KINGSTON, R.I., U.S.A. a. Studies on homografting. (Amphibia) HARTWIG, H. Dr.phil. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KOLN-Lindenthal, Deutsche Bundesrepublik a. Wirkungsmechanismus von Schilddrusenhormonen. HARVEY, E. B. B.S., M.A., Ph.D. — Worcester Foundation for Exp. Biol., 222 Maple Avenue, SHREWSBURY, Mass., U.S.A. a. Implantation, embryogenesis and irradiation. Mesocricetus auratus (Ro- dentia) HARVEY, Mrs. E. BROWNE A.B., M.A., Ph.D., Sc.D., F.I.I.E. — Marine Biol. Lab., WOODS HOLE, Mass., U.S.A. a. Centrifuging eggs, and development of fractions obtained by centrifugal force. Parthenogenetic merogony or development without nuclei. (Echi- noidea) b. Book, including classified compilation of all experimental work. Arbacia punctulata (Echinoidea) c. Moving pictures of metamorphosis and of the natural history (in color). Arbacia punctulata (Echinoidea) d. Determination of sex by electrical method. Arbacia punctulata (Echi- noidea) e. Prophase of the egg. Arbacia punctulata (Echinoidea) f. Study of crescent-shaped figure in the egg. Arbacia punctulata (Echi- noidea) HASEGAWA, M. M.A. — Embryol. Div., Dept. of Anim. Husbandry, Fac. of Agriculture, Nagoya Univ., ANJO-City, Japan a. Restitution of the eye after removal of the retina and lens. (Teleostei) b. Regeneration of the liver. Gallus domesticus (Aves) c. Regeneration of the retina in defect of the choroid. (Amphibia) HAsEK, M. M.D., M.I.I.E. — Dept. of Exper. Biol, and Genet., Inst, of Biol., Czechoslovak Acad, of Sci., Na cvicisti 2, PRAHA 6, Czecho- slovakia a. Experimental embryonic parabiosis. Gallus domesticus, Meleagris galli- pavo, Anas platyrhynchus, Numida meleagris (Aves) b. Developmental immunology. (Aves; Mammalia) 59 Has-Hig HASSA, O. Med.Veter.Dr. — Inst, of Histol. and Embryol., Veter. Coll. of the Univ., ANKARA, Turkey (no embryological work in progress) HATHAWAY, R. — Oceanographic Inst., Florida State Univ., TALLAHAS- SEE, Florida, U.S.A. HAUENSCHILD, C. Dr.rer.nat., Prof. — Zool. Inst, der Univ., Katharinen- str. 20, FREIBURG i. Brsg., Deutsche Bundesrepublik a. Lunarperiodizitat, Neurosekretion, Metamorphose, Geschlechtsbestim- mung. Platynereis dumerilii (Polychaeta errantia) b. I-Zellen, Entwicklung, Stockdifferenzierung. Campanularia johnstoni (Hydroidea Thecaphorae) HAY, Miss D. Lie. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Etude de l'entree en jeu des correlations hypophyso-thyroidiennes. Rana temporaria, Tritwus cristatus (Amphibia) b. Morphogenese et physiologie embryonnaire des glandes endocrines. ( Aves; Mammalia) HAY, Miss E. D. A.B., M.D. — Dept. of Anat, Harvard Med. School, BOSTON 15, Mass., U.S.A. a. Fine structure of differentiating muscle. b. Fine structure of differentiating cilia. c. Autoradiographic studies of regeneration. HAYASHI, Y. D.Sc, M.I.I.E. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Analysis of protein synthesis in developing tissues. Gallus spec. (Aves) b. Biochemical analysis of muscle differentiation. Tritwus pyrrhogastet (Urodela), Gallus spec. (Aves) HAYEK, H. Dr.med., Dr.phil., M.I.I.E., Prof. — Anat. Inst., Wahringerstr. 13, WIEN 9, Oesterreich a. Development of urogenital system, especially mesonephros and cloaca. Homo sapiens (Primates) HEATH, H. D. Ph.D. — Dept. of Biol. Sci., Alameda State Coll., 22300 Foothill Bd., HAYWARD, Cal., U.S.A. a. Growth of larvally transplanted organs. Ambystoma tigrinum (Urodela) b. Developmental phenomena. Hydra littoralis (Hydroidea) HECKERMAN, R. O. B.S., M.S., Ph.D., Prof. — Dept. of Biol. Sci., Quincy Coll., QUINCY, 111., U.S.A. a. Cytology of ageing. Mus musculus (Rodentia) f HEILBRUNN, L. V. Ph.D., Prof. — Dept. of Zool., Univ. of Pennsyl- vania, PHILADELPHIA 4, Pa., U.S.A. (deceased) HEIM, W. G. A.B., M.A., Ph.D. — Dept. of Biol., Wayne State Univ., DETROIT 2, Mich., U.S.A. a. Role of catalase in growth and neoplasia. Mus musculus, Mus rattus (Rodentia) b. Serum proteins during ontogeny. Gallus domesticus (Aves), Mus rattus (Rodentia) HEMMINGS, W. A. B.A. — Agr. Res. Council Unit of Embryol., Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caernarvonshire, Wales a. Immunological relations of mother and fetus. (Mammalia) 60 HEMPEL, G. Dr. — Inst, fur Fischereibiol. der Univ. Hamburg, Holsten- wall 24, HAMBURG 36, Deutsche Bundesrepublik a. Methods for breeding and rearing eggs and larvae. Clupea harengus ( Teleostei) HENLEY, Miss C. M.A., Ph.D. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. a. Studies in experimental cytology. Polychoerus spec. (Acoela, Turbel- laria) , Chaetopterus pergamentaceus (Polychaeta) (in collaboration with D. P. COSTELLO) b. Effects of antimitotic agents on eggs. Chaetopterus pergamentaceus (Polychaeta) (in collaboration with D. P. COSTELLO) HERLANT (MEEWIS), Mrs. H. Dr.Zool., Prof. — Lab. de Zool. syst. et de Biol, anim., Fac. des Sci., Inst. Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt, BRUXELLES, Belgique a. Influence du systeme nerveux dans la regeneration. Eisenia foetida (Oli- gochaeta) b. Les cellules neurosecretrices et la reproduction sexuee. Eisenia foetida (Oligochaeta) HERRMANN, H. M.D., M.I.I.E., Prof. — Dept. of Zool., Univ. of Con- necticut, STORRS, Conn., U.S.A. a. Chemistry of muscle differentiation. Gallus spec. (Aves) b. Biochemical study of growth and differentiation of explanted embryos. Gallus spec. (Aves) (in collaboration with N. W. KLEIN) c. Biochemical analysis of protein synthesis in cornea and sclera. Gallus spec. (Aves) HESS, O. Dipl.Biol., Dr.rer.nat. — Stazione Zool., Villa Comunale, NAPO- LI, Italia HESSELSJO, R. Med.lic. — Dept. of Anat., Univ. of Goteborg, GoTE- BORG SV, Sweden a. Derivation and development of prostatic utricle. Homo sapiens (Pri- mates) HEUSER, C. H. F.I.I.E., Prof. — Eugene Talmadge Mem. Hosp., Med. Coll. of Georgia, AUGUSTA, Ga., U.S.A. a. Survey of embryos of the first three weeks of development. Homo sapiens (Primates) HICKS, S. P. B.A., M.D. — Lab. of Pathol., New England Deaconess Hosp. & Harvard Med. School, 195 Pilgrim Road, BOSTON 15, Mass., U.S.A. a. Ionizing radiation as an extirpative tool in experimental embryology. Rattus spec, Mus spec. (Rodentia) b. Reproducible abnormalities of brain, especially cortex, from ionizing radiation during development. Rattus spec. (Rodentia) c. Tritiated thymidine as a means of labeling primitive cells in the develop- ing cerebral cortex, thalamus, retina and cerebellum, in order to trace their migrations and ultimate differentiation by radioautography. Rattus spec. (Rodentia) d. Histogenesis of abnormalities in mutants affecting development of the nervous system. Mus spec. (Rodentia) HIGHNAM, K. C. M.So, Ph.D. — Dept. of Zool., Univ. of Sheffield, SHEFFIELD, England 61 Highnam-Hol a. Influence of hormones on metamorphosis and pupal diapause. (Lepidop- tera) b. Hormonal control of gonadal development. Schistocerca gtegaria (Or- thophtera) HILFER, S. R. B.S., M.A., Ph.D. — Dept. of Biol., Temple Univ., PHILA- DELPHIA, Pa., U.S.A. a. Effect of pituitary extirpation on reamputation and regeneration of regenerating limbs. Triturus viridescens (Urodela) b. Stability of dissociated embryonic thyroid cells as measured by morpho- logical and chemical criteria of differentiation. Gallus domesticus (Aves) HINCHLIFFE, J. R. B.A. — Wye Coll., Near ASHFORD, Kent, England a. Effects of mutant genes om embryonic development. Mus musculus (Rodentia) (in collaboration with D. A. EDE) HINGLAIS (GUILLAUD), Mrs. N. — Lab. d'Hormonol. et de Cytol Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 111 Rue L. M. Nordmann, PARIS XIII, France HINRICHSEN, K. Dr.med. — Anat. Inst, der Univ., Kreuzbergring 36, GOTTINGEN, Deutsche Bundesrepublik a. Cytologische Geschlechtsdiagnostik. Oryctolagus cuniculus (Lago- morpha) b. Endokrine Organe. Mus musculus (Rodentia) c. Histochemie der histogenetischen Differenzierung. Mus musculus (Ro- dentia), Oryctolagus cuniculus ( Lagomorpha) , Homo sapiens (Primates) HINTZSCHE, E. Dr.med., Prof.ord. — Anat. Inst., Buhlstr. 26, BERN, Schweiz (no embryological work in progress) HIRAIWA, Y. K. D.Sc, Prof. — Seinan Gakuin Univ., FUKUOKA, Japan a. Studies on fertilization and reproduction. (Mammalia) HIRAMOTO, Y. D.Sc, M.I.I.E. — Misaki Marine Biol. Station, Univ. of Tokyo, MISAKI, Kanagawa-ken, Japan a. Cell division. (Echinoidea) b. Physical properties of marine eggs. (Echinoidea) c. Physiological studies on fertilization. Hemicentrotus spec, Pseudocentro- tus spec, Clypeaster spec, Peronella spec, Paracentrotus spec, Psam- mechinus spec (Echinoidea) HISAOKA, K. K. B.Sc, M.Sc, Ph.D. — Dept. of Biol., Loyola Univ., 6525 Sheridan Road, CHICAGO 26, 111., U.S.A. a. Histological and histochemical studies on the effect of 2-acetyl-amino- fluorene on the embryos of live-bearing forms. Mollienesia latipinna (Cyprinodontes, Teleostei) b. A study of spontaneous tumors (teratomata). Lebistes reticulatus (Cypri- nodontes, Teleostei) c A study of chemically-induced epidermal hyperplasia in the embryo. Brachydanio rerio (Eventognathi, Teleostei) d. The effect of ribonuclease on the development of the embryo. Brachy- danio rerio (Eventognathi, Teleostei) e. The distribution and localization of nucleic acids in the developing em- bryo. Brachydanio rerio (Eventognathi, Teleostei) f. A histochemical study of the oocyte. Brachydanio rerio (Eventognathi, Teleostei) 62 HISHIDA, T. M.A. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Metabolic analysis of early development. Oryzias latipes (Teleostei) (in collaboration with E. NAKANO) b. Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in collaboration with T. YAMAMOTO and H. TOMITA) c. Physiological study of sex differentiation. Oryzias latipes (Teleostei) HJELMMAN, G. Prof. — Anat. Inst., Univ. of Helsinki, HELSINKI, Fin- land (no embryological work in progress) HOADLEY, L. F.I.I.E., Prof. — Biol. Lab., Harvard Univ., Divinity Ave., CAMBRIDGE 38, Mass., U.S.A. HOEFSMIT, Miss E. C. M. Med.Drs. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Development of ductus arteriosus. Mus norvegicus albinus (Rodentia) HOFMAN, L. — Inst, de Biol., Fac. de Med., Salata, ZAGREB, Yougoslavie a. Relative growth of organs in the embryo. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB) HOGUE, Miss M. J. A.B., Ph.D., Prof. (Emer.) — Dept. of Anat., School of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A. HOLLANDER, W. F. B.A., M.S., Ph.D. — Dept. of Genetics, Iowa State Univ., AMES, Iowa, U.S.A. a. Genetic mutants — polydactylism, lethal types. Mus musculus (Roden- tia) b. X-ray induced dominant lethal effects. Mus musculus (Rodentia) c. X-ray induced chromosome-translocation effects. Mus musculus (Ro- dentia) d. Genetic mutants. Columbia livia (Aves) HOLM, K. A. Fil.Dr. — Zool. Inst., Uppsala Univ., UPPSALA, Sweden a. Experimental investigation of the embryo (determination, prospective significance of embryonic areas). (Araneae, Arachnoidea) HOLST CHRISTENSEN, P. J. Dr.Phil. — Inst, for Aim. Zool., Universi- tetsparken 3, COPENHAGEN 0, Denmark HOLTER, H. Ph.D., M.I.I.E. — Physiol. Dept., Carlsberg Lab., 10 Gl. Carlsbergvej, COPENHAGEN, Valby, Denmark HOLTFRETER, J. K. F. Ph.D., F.I.I.E., Prof. — Dept. of Biol., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER 20, N.Y., U.S.A. a. Accessory tails , .induced" by chemically inert substances. Xenopus laevis (Anura) b. Studies on competence changes in aging ectoderm. Pleurodeles Waltlii (Urodela) c. Production of a third median eye by UV irradiation. Ambystoma punc- tatum (Urodela) d. Studies on muscle development. (Amphibia) HOLTZER, H. Ph.D., M.I.I.E. — Dept. of Anat., School of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A. a. Myogenesis. (Vertebrata) b. Chondrogenesis. (Vertebrata) 63 Hoo-Hun HOOKER, D. Ph.D., Sc.D. (Hon.), M.I.I.E., Prof. (Emer.) — 110 Living- ston St., NEW HAVEN 11, Conn., U.S.A. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. — Dept. of Anat., Sterling Hall of Med., Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Study of the physiological responses of fetuses. Homo sapiens (Primates) b. Study of the reactivity of the fetus to exteroceptive stimulation. Homo sapiens (Primates) c. Responses of fetuses to double simultaneous stimulation. Homo sapiens (Primates) (in collaboration with Miss T. HUMPHREY, Pittsburgh) HORI, R. M.Sc, D.Sc — Biol. Inst, Fac. of Lib. Arts, Toyama Univ., Hasu-machi 22, TOYAMA, Japan a. Electrical phenomena accompanying fertilization. Hemicentrotus pulcher- rimus, Pseudocentrotus depressus (Echinoidea), Oryzias latipes (Tele- ostei) b. Ionic changes accompanying fertilization. Oryzias latipes (Teleostei) HORIKAWA, M. D.Sc — Dept. of Exper. Radiol., School of Med., Kyoto Univ., KYOTO, Japan a. Developmental-genetic studies on various primary cell types derived from the embryo in cell culture. Mus musculus (Rodentia) b. Biochemical and genetical studies on variants (resistant to mitomycin C, 8-azaguanine, UV- and y-irradiation) of ,, strain L" cells in cell culture. Mus musculus (strain L) (Rodentia) HORN, E. C. B.S., A.M., Ph.D., Prof. — Dept. of Zool., Duke Univ., DURHAM, N.C., U.S.A. a. The pattern of basic protein distribution during early embryonic develop- ment. (Amphibia) b. Isolation and characterization of cytoplasmic histones in embryonic cells. (Amphibia) HORSTADIUS, S. Fil.Dr., F.I.I.E., Prof. — Zool. Inst., Univ. of Uppsala, UPPSALA, Sweden a. Determination in the egg: Analysis of the gradients and the processes behind them. (Echinoidea) b. The effect of various antimetabolites on embryonic development. (Echi- noidea) HORSTMANN, E. Dr.med. et phil., Prof. — Anat. Inst, der Univ. Kiel, Neue Univ., Eingang Fl, (24b) KIEL, Deutsche Bundesrepublik HORSTMANN, H. J. Dr.phil.nat. — Physiol.-chemisches Inst, der Univ., Wasserturmstr. 5, ERLANGEN, Deutsche Bundesrepublik a. Kohlenhydrat-Stoffwechsel von Embryonen. Lymnaea stagnalis (Gas- tropoda) b. Stoffwechsel der Embryonen. Fasciola hepatica (Trematoda) HSU (LIANG), Mrs. C. Y. B.S., M.S., Ph.D. — Dept. of Biomorphics, National Defense Med. Center, TAIPEI, Taiwan, Republic of China a. The effect of aureomycin and penicillin on metamorphosis. Rana narina (Anura) b. The effect of aureomycin on thyroidectomized tadpoles. Rana catesbeiana (Anura) 64 HUBER, W. D.Sc. — Museum d'Histoire Naturelle, BERNE, Suisse a. Developpement de la tete. Etude morphologique et experimentale de la forme encephalique en rapport avec le crane; courbures et redressement de la tete embryonnaire; position des yeux; analyse des races a forme encephalique aberrante. Gallus domesticus (Aves), Canis familiar is (Car- nivora) HUBL, D. Dr.rer.nat. — Zool. Inst, der Univ. Wiirzburg, Rontgenring 10, WtiRZBURG, Deutsche Bundesrepublik a. Untersuchungen iiber die neurosekretorischen Zellen im Gehirn und deren Einfluss auf die Regeneration. (Lumbricidae, Oligochaeta) b. Weitere Untersuchungen iiber die Beziehung zwischen Nervensystem und Regeneration. (Lumbricidae, Oligochaeta) HUGHES, A. F. W. M.A., Ph.D., Sc.D. — Anat. School, Univ. of Cam- bridge, CAMBRIDGE, England HULTIN, J. M. T. Ph.D., M.I.I.E. — Wenner-Gren's Inst, for exper. Biol., Norrtullsgatan 16, STOCKHOLM Va., Sweden a. The role of the different cell components in determination and differen- tiation. (Echinoidea) HUMMEL, Miss K. P. Ph.D. — Roscoe B. Jackson Memorial Lab., BAR HARBOR, Me., U.S.A. a. Studies on histogenesis of anomalies resulting from the gene "disorgani- zation". Mus musculus (Rodentia) b. Studies on the development of situs viscerum inversus resulting from a recessive gene. Mus musculus (Rodentia) c. Studies on the development of cysts in the neurophypophysis and their effects on physiology. Mus musculus (Rodentia) HUMPHREY, R. R. A.M., Ph.D., F.I.I.E., Prof. — Dept. of Zool., Indiana Univ., BLOOMINGTON, Ind., U.S.A. HUMPHREY, Miss T. M.D., Ph.D.. M.I.I.E. — Dept. of Anat., School of Med., Univ. of Pittsburgh, 868B Scaite Hall, PITTSBURGH 13, Pa., U.S.A. a. Pancreatic developmental studies. Homo sapiens (Primates) b. Responses of fetuses to double simultaneous stimulation. Homo sapiens (Primates) (in collaboration with D. HOOKER) c. Pyramidal tract development correlated with cortical differentiation. Homo sapiens (Primates) HUMPHREYS, W. J. A.B., M.A., Ph.D. — Dept. of Zool., Univ. of Cali- fornia, BERKELEY 4, Cal., U.S.A. a. Ultrastructure of blastomeres in mosaic eggs. Mytilus edulis (Lamelli- branchia) HUMPHRIES. A. A., Jr. Ph.D. — Dept. of Biol., Emory Univ., ATLAN- TA 22, Ga., U.S.A. a. Natural inhibition of meiosis in unfertilized oocytes. Triturus viridescens (Urodela) b. Chemistry and physiology of egg jellies. (Amphibia) c. Cytochemistry of oocytes. (Amphibia) HUNT, E. L. Ph.D., Prof. — Dept. of Biol., Emory Univ., ATLANTA 22, Ga., U.S.A. a. Studies on the distribution of radio-iodine. (Amphibia) b. Studies on the estrus cycle and gestation in alloxan-diabetic animals. Rattus norvegicus (Rodentia) 65 Huy-Iye HUYGNARD, C. Dr. en Med., Dr. es Sci. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Desensibilisation a la greffe. Mus rattus (Rodentia) HUYNH, V. A. - — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, 111 Rue L. M. Nordmann, PARIS XIII, France ICHIKAWA, A. M.Sc, D.Sc, Prof. — Dept. of Zool., Fac. of Sci, Hok- kaido Univ., North 8, West 5, SAPPORO, Japan a. Development and life-history of Japanse forms. (Rhizocephala, and para- sitic Isopoda; Crustacea) b. Regeneration. (Turbellaria) ICHIKAWA, M. D.Sc, M.I.I.E., Prof . — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan a. Hormonal mechanism of metamorphosis. Philosamia cynthia ricini, Bom- byx mod, Luehdorfia japonica (Lepidoptera) (in collaboration with Mrs. J. NISHIITSUTSUJI— UWO) b. Extraction of the brain hormone. Bombyx mori and other spp. (Lepidop- tera) (in collaboration with H. ISHIZAKI) IGNATJEVA, Mrs. G. M. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Regional induction capacities of the chorda-mesoderm. Huso huso, Aci- penser guldenstadti, A. stellatus (Acipenseridae, Chondrostei) b. Dynamics of gastrulation movements. (Acipenseridae, Chondrostei; Urodela) IKENAGA, T. Dept. of Biol., Fac. of Sci., Kyushu Univ., FUKUOKA, Japan a. Studies on induction mechanism by immunological method. Triturus pyrrhogaster (Urodela) IKUSHIMA, N. D.Sc — Biol. Lab., Kansai Med. School, HIRAKATA City, Osaka Pref., Japan a. Mechanism of the morphogenetic movement in the embryo. Triturus pyrrhogaster, Hynobius nebulosus (Urodela) IMAIZUMI, T. — Zool. Inst., Fac. of Sci., Univ. of Kyoto, KYOTO, Japan a. Studies on the hereditary lethals. Drosophila spec. (Diptera) IMMERS, J. licphil. — Wenner-Gren's Inst, for exper. Biol, Norrtullsgatan 16. STOCKHOLM Va., Sweden a. Biochemical factors in development, particularly the role of mucopoly- saccharides. (Echinoidea) b. Protein biosynthesis. Paracentrotus lividus, Sphaerechinus granulans, Echinus esculentus, Psammechinus miliaris (Echinoidea) INCE, Miss F. E. M.Sc — Dept. of Zool., Bedford Coll., Regent's Park, LONDON N.W. 1, England a. Development of embryonal membranes. Anguis fragilis ( Lacertilia) INGEN, Miss H. C. van Med.Drs. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Nether- lands a. Heart and vessels in congenital malformations. Homo sapiens (Primates) (in collaboration with H. A. SNELLEN, J. DANKMEIJER and Miss A. DEKKER) b. Ductus arteriosus before and after birth. Mus norvegicus albinus (Roden- tia) , Homo sapiens (Primates) 66 INOUE. S. — Inst, of Endocrinol., Gunraa Univ., Iwagami-cho, MAEBASHI, Japan INOUYE, I. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, KOBE, Japan a. Chemical phenocopies. Drosophila melanogaster (Diptera) (in collabora- tion with S. KAJI and H. TAKAYA) ISHIDA, J. Dr.Sci., M.I. I.E. — Zool. Inst, Fac. of Sci., Tokyo Univ., Bunkyo-ku, TOKYO, Japan a. Phosphorus metabolism in eggs. Oryzias spec. (Teleostei) ISHIHARA, K. M.Sc, Dr.Sc — Dept. of Biol., Saitama Univ., URAWA, Japan a. Metabolism of fatty acid in eggs. Hemicentrotus pulcherrimus (Echi- noidea) b. Egg products at fertilization. (Echinoidea) ISHIKAWA, M. M.A., D.Sc. — Marine Biol. Station, Nagoya Univ., Su- gashima-cho, TOBA, Mie-ken, Japan a. Physiological studies on fertilization and artificial parthenogenesis. Hemi- centrotus pulcherrimus, Pseudocentrotus depressus (Echinoidea) (in col- laboration with M. SUGIYAMA) ISHIZAKI, H. M.Sc — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan a. Extraction and purification of the brain hormone. Bombyx mori (Lepi- doptera) (in collaboration with M. ICHIKAWA) ISLAM, A. Ph.D. — Dept. of Zool., Government Coll., LAHORE, Pakistan a. The early embryology. Bufo melanostictus (Anura) b. Organogenesis. Uromastix hardwickii (Lacertilia) ITO, S. — Dept. of Biol., Fac. of Sci., Kumamoto Univ., Kurokami-machi, KUMAMOTO-Shi, Japan a. Studies on activation. Oryzias latipes, Plecoglossus altivelis (Teleostei) b. Permeability of the egg at the time of fertilization. Oryzias latipes, Plecoglossus altivelis (Teleostei) c. Effect of outer medium upon the cortical change. Plecoglossus altivelis ( Teleostei) d. Electrical properties of the egg. Oryzias latipes (Teleostei) ITO, T. Dr.Agr. — Sericult. Exper. Station, Koenji, Suginami-ku, TOKYO, Japan a. Respiratory metabolism during metamorphosis. Bombyx mori (Lepidop- tera) b. Function of the midgut in relation to growth and nutrition. Bombyx mori (Lepidoptera) c. Analysis of nutritional requirements by the use of synthetic diets. Bom- byx mori (Lepidoptera) IWASAWA, H. D.Sc. — Sado Marine Biol. Station, AIKAWA, Sado Is- land, Japan a. Embryological study on endocrine correlation. (Pisces; Amphibia) IWATA, F. B.So, D.Sc. — Akkeshi Marine Biol. Station, Hokkaido Univ., AKKESHI (Hokkaido), Japan a. Studies on the comparative embryology with special reference to taxo- nomic interrelationships. (Nemertea, Plathelminthes) IYEIRI, Miss S. M.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., FU- KUOKA, Japan 67 Iyeri-Joh a. Inductive effects of embryonic juice. Triturus pyrrhogaster (Urodela) , Gallus domesticus (Aves) b. Fractionation of inductive agents from mammalian tissues (normal, re- generating and cancer tissues). Triturus pyrrhogaster (Urodela), Rattus spec, Cavia spec. (Rodentia) JACOB, J. M.A., Ph.D. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Electron microscopic studies of the salivary glands. Bradysia spec. (Sciaridae, Diptera) , Smittia spec. (Chironomidae, Diptera) (in collabo- ration with J. L. SIRLIN) b. Biochemical cytology of the salivary glands. Bradysia spec. (Sciaridae, Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration with J. L. SIRLIN) JACOBS, W. P. A.B., Ph.D. — Dept. of Biol., Princeton Univ., Box 704, PRINCETON, N.J., U.S.A. a. Quantitative study of normal development including round-the-clock col- lecting, morphological and histological studies; sterile culture and floral induction of shoot apices. Coleus spec, Perilla spec, Caulerpa spec. b. Quantitative study of hormonal factors which normally control the differ- entiation of the 2 cell-types, xylem and sieve-tubes. Coleus blumei JACOBSON, A. G. A.B., Ph.D. — Dept. of Zool., Univ. of Texas, AUS- TIN 12, Texas, U.S.A. a. Induction of the lens of the eye by the synergistic action of neural and non-neural inductors. Taricha torosa (Urodela) b. Tissue interactions between ectoderm and mesoderm and between endo- derm and mesodern that affect heart differentiation. Taricha torosa (Urodela) c Factors influencing the positioning of the placodal structures. Taricha torosa (Urodela) JACOBSON, D. C.-O. Fil.lic — Zool. Inst., Uppsala Univ., UPPSALA, Sweden a. Determination of the central nervous system. Ambystoma spec. (Urodela) JAFFE, L. F. B.S., Ph.D. — Biol. Division, Univ. of Pennsylvania, PHILA- DELPHIA 4, Pa., U.S.A. a. Development of cell polarity; studied by analyzing effects of polarized irradiation. Funaria hygrometrica (Bryophytes), Botrytis cinerea (Fungi imperfecti) b. Development of cell polarity; studied via group effects and chemotropism. Botrytis cinerea (Fungi imperfecti) JAFFEE, O. C. B.A., M.S., Ph.D. — Dept. of Biol., Univ. of Buffalo, BUFFALO 14, N.Y., U.S.A. a. Further studies of hemodynamics and cardiogenesis. Rana pipiens (Anura) 1. The effects of nephrectomy on cardiogenesis (pronephros). 2. Cytological and histochemical studies on cardiac development, espe- cially valvulogenesis. b. Cellular differentiation in the pronephros; cytology, histochemistry. Rana pipiens (Anura) JAGER, B. de M.Sc — Div. of Fisheries, Beach Road, Sea Point, CAPE TOWN, Republic of South Africa 68 a. Embryology. Sardinops ocellata, Trachurus trachurus, Etrumeus micro- pus, Thyrsites atun, Merluccius capensis (Pisces) JAGERSTEN, K. G. M. Fil.Dr., Prof. — Zool. Inst., Uppsala Univ., UPP- SALA, Sweden a. Larval development. (Pogonophora) JAMES, D. W. M.B., B.S. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Healing of skin wounds. Rattus spec, Cavia spec. (Rodentia) , Orycto- lagus spec. (Lagomorpha) (in collaboration with M. ABERCROMBIE) JANSEN, J. M.D., M.I. I.E. — Anat. Inst., Univ. of Oslo, Karl Johansgt. 47, OSLO, Norway a. Early development of the hypophysis. Balaenoptera physalus (Cetacea) JELfNEK, R. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a. Development of experimental exencephaly. Gallus domesticus (Aves) b. Experiments on the "overgrowth" phenomenon of the neural tube. Gallus domesticus (Aves) JIT, I. M.B., M.S., Ph.D. — Dept. of Anat., Med. Coll., AMRITSAR, Pun- jab, India a. Histogenesis of the gall-bladder. Homo sapiens (Primates) b. Level of termination of the spinal cord in the pre-natal period. Homo sapiens (Primates) c. Development of the splanchnic nerves. Homo sapiens (Primates) d. Prenatal ossification of some bones. Homo sapiens (Primates) e. Development of the transverse folds of the rectum. Homo sapiens (Pri- mates) JOCHEMS, D. J. — Div. of exper. Morphol., Anat. -Embryol. Inst., Municipal Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O, Netherlands JOHANSSON, A. S. Dr., Prof. — Zool. Lab., Univ. of Oslo, OSLO-Blin- dern, Norway (no embryological work in progress) JOHANSSON, N. — Zool. Inst., Univ. of Gothenburg, Fjarde Langgatan 7B, GoTEBORG-SV, Sweden a. Embryological studies. Homarus vulgaris (Crustacea) JOHNELS, A. G. Phil.Dr. — Swedish Museum of Nat. Hist., Vertebrate Dept., STOCKHOLM 50, Sweden (no embryological work in progress) JOHNEN, Miss A. G. Dr.phil. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KOLN-Lindenthal, Deutsche Bundesrepublik a. Die Wirkungsspezifitat abnormer Induktoren in der Entwicklung. (Am- phibia) b. Die Bedeutung des Zeitfaktors beim Induktionsvorgang. Ambystoma spec, Triturus spec. (Urodela) JOHNSON, D. C. B.S., M.S., Ph.D. — Dept. of Zool., State Univ. of Iowa, P.O. Box 585, IOWA City, Iowa, U.S.A. JOHNSON, E. M. — Dept. of Anat., Coll. of Med., Univ. of Florida, GAINESVILLE, Florida, U.S.A. JOHNSON, G. Dr. es Sci. — Lab. de Zool. et Biol, anim., Fac des Sci., POITIERS, Vienne, France a. Hermaphroditism. (Rhyscotidae, Isopoda, Crustacea) b. Sex determination, monogeny. (Oniscoidea) 69 Jol-Kam JOLLIE, W. P. Ph.D. — Dept. of Histol. and Embryol., Med. School, Queen's Univ., KINGSTON, Ont., Canada a. Cytology of decidual cells. (Rodentia) JONES, B. M. D.Sc — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. The cultivation of embryonic tissues. (Insects) JONES, K. W. B.Sc, Ph.D. — Inst, of Animal Genet., Univ. Dept. of Ge- net., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Small aggregate cultures of embryonic cells. Rana pipiens (Anura) JONES, O. P. Ph.D., M.D. — Dept. of Anat., Univ. of Buffalo Med. School. 3435 Main St., BUFFALO 14, N.Y., U.S.A. a. Embryonic blood cells in the yolk sac. Rattus spec. (Rodentia) b. Electron microscopy of hepatic hematopoiesis. Rattus spec, Homo sapiens (Mammalia) JONES, R. O. B.Sc — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Electron microscope analysis of the differentiation of presumptive ecto- derm in vitro. Discoglossus spec. (Anura) b. Analysis of the differentiation of neural cells in v i t r o by means of the fluorescent antibody technique. Discoglossus spec. (Anura) JONES, W. E. B.Sc, Ph.D. — Marine Biol. Station, Univ. Coll. of North Wales, MENAI BRIDGE, Anglesey, Wales JONGH, H. J. de — Zool. Lab., State Univ., Kaiserstr. 63, LEIDEN, Nether- lands a. Functional morphology of the head, with special reference to larval life and metamorphosis. Rana temporaria (Anura) JORDAN, Miss M. A. Ph.D. — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland a. Congenital malformations in relation to karyology. Mesocricetus auratus, Homo sapiens (Mammalia) (in cooperation with Mrs. J. PIETRZYK (WALKNOWSKA)) b. Properties of regeneration blastemal cells. Amby stoma mexicanum, Tri- turus spec, Xenopus laevis (Amphibia) JOST, A. D. Dr.Sc, M.D. (hon.c), M.I.I.E., Prof. — Lab. de Physiol. comp., Fac des Sci., Univ. de Paris, 12 Rue Cuvier, PARIS Ve, France JOUBERT, D. M. M.Sc (Agric), Ph.D. — Dept. of Sheep Husbandry and Wool Technol., Univ. of Pretoria, PRETORIA, South Africa (no embryological work in progress) JOUBERT. P. J. M.Sc — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLENBOSCH, South Africa a. The ontogenesis of the sound-conducting apparatus and of the palato- quadrate. Arthroleptella lightfooti (Ranidae, Anura) JURA, Cz. D.Sc. — Zool. Dept. of the Jagiellonian Univ., sw. Anny 6, KRAKOW, Poland a. Experimental studies on development. Melasoma populi (Coleoptera) b. Histochemical studies on development. Melasoma populi (Coleoptera) (in collaboration with Miss A. KRZYSTOFOWICZ and Miss B. WEGLARSKA) c Early developmental stages. Tetrodontophora bielanensis (Collembola) JURAND, A. Dr. Biol. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland 70 a. Morphogenesis of notochord in early stages of embryonic development. Gallus domesticus (Aves) JUROVITSKY, J. G. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Study of the influence of 02 concentration on embryonic development. Acipenser giildenstadti (Acipenseridae, Chondrostei), Abramis brama, Rutitus rutilus, Vimba vimba, Chalcalburnus chalcoides, Scardinius ery- thropthalmus (Cyprinidae, Teleostei) , Misgurnus [ossilis (Cobitidae, Te~ leostei), Esox lucius (Esocidae, Teleostei) KAJI, S. Dr.Sc. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, KOBE, Japan a. Chemical influence upon the facet-forming faculty of the Bar eye. Droso- phila spec. (Diptera) b. Chemical phenocopies. Drosophila melanogaster (Diptera) (in collabora- tion with I. INOUYE and H. TAKAYA) KAJISHIMA, T. M.A., D.Sc, M.I.I.E. — Biol. Inst, Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Experimental analysis of the development of genetical characters. Caras- sms auratus (Teleostei) KALLEN, A. J. B. M.D., M.I.I.E. — Tornblad-Inst. for comp. Embryol., Bis- kopsgatan 7, LUND, Sweden a. DNA-synthesis in central nervous system. Gallus domesticus (Aves) b. Experimental brain tumour formation in embryos. Gallus domesticus (Aves) c. Cell division in nervous system. Gallus domesticus (Aves) KALMAN, G. Ph.M. — Dept. of Anat., Univ. Med. School, SZEGED, Hungary a. Developmental histochemistry of motor end plates (cholinesterase acti- vity). Mus rattus (Rodentia) (in collaboration with B. CSILLIK and I. SCHNEIDER) b. Submicroscopical analysis of the development of post-synaptic mem- branes. Mus rattus (Rodentia) (in collaboration with B. CSILLIK and I. SCHNEIDER) c. Developmental histochemistry of muscle spindles (cholinesterase acti- vity). Mus rattus (Rodentia) (in collaboration with B. CSILLIK and I. SCHNEIDER) KALTENBACH, Mrs. J. COUFFER B.S., M.A., Ph.D. — Dept. of Zool., Mount Holyoke Coll., SOUTH HADLEY, Mass., U.S.A. a. Serological study of proteins during early development. Paracentrotus lividus (Echinoidea) (in collaboration with H. P. PERLMANN, Stock- holm, Sweden) b. Direct, local metamorphic effects by thyroxine and thyroxine analogues. Rana pipiens (Anura) c. Histochemical study of the tadpole during normal and thyroxine induced metamorphosis. Rana pipiens (Anura) KAMEL, A. B.Sc, Ph.D. — Dept. of Zool., Fac. of Sci., Ain Shams Univ., Abassia, CAIRO, Egypt a. Effect of cytotoxic substances on development. (Amphibia; Aves) KAMER, J. C. van de Ph.D. — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands 71 Kamer-Kel a. Normal development and cytology of the pineal region. Anoptichthys Jordanii (Teleostei) KAMEYAMA, Y. M.D., D.Med.Sci. — Research Inst, of Environmental Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA, Japan a. Effects of ionizing radiation upon the embryo. Mus musculus (Rodentia) (in collaboration with U. MURAKAMI and A. MAJIMA) b. Effects of reduced atmospheric pressures upon the embryo. Mus mus- culus (Rodentia) (in collaboration with U. MURAKAMI) c. Action of external agents controlling the manifestation of malformations. Mus musculus (Rodentia) (in collaboration with U. MURAKAMI and A. MAJIMA) KAMPHUIS, L. W. Med.Drs. — Anat.-Embryol. Lab., State Univ., Jans- kerkhof 3A, UTRECHT, Netherlands a. Study on the development of organ-specific enzymes or enzyme-patterns, e.g. in liver. (Amphibia; Aves; Mammalia) KANAGASUNTHERAM, R. M.B.B.S., Ph.D. — Dept. of Anat, Kitchener School of Med., Univ. of Khartoum, KHARTOUM, Sudan KANATANI, H. D.Sc — Misaki Marine Biol. Station, Univ. of Tokyo, MISAKI, Kanagawa-ken, Japan a. Supplementary eye formation. Dugesia gonocephala (Turbellaria) b. Bipolar head formation. Dugesia gonocephala (Turbellaria) c. Fission. Dugesia gonocephala (Turbellaria) KANOH, Y. D.Sc, M.I.I.E. — Dept. of Zool., Fac. of Sci., Hokkaido Univ., North 8, West 5, SAPPORO, Japan a. Electronmicroscope observation of spermatozoa and fertilization process. (Cyclostomata; Teleostei; Amphibia) b. Cytochemical investigations on development. (Teleostei) (in collabora- tion with T. S. YAMAMOTO) KARASAKI, S. M.Sc, D.Sc. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. a. Nuclear RNA synthesis in embryonic induction and regeneration. Tritu- rus spec. (Urodela) (in collaboration with T. YAM AD A and D. PRESCOTT) b. Changes of fine structure during oogenesis, embryogenesis, and regenera- tion. Triturus spec. (Urodela) KATAKURA, Y. M.A. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Development of the sex characters. Armadillidium vulgare (Isopoda, KATASHIMA, R. K. Dr.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, HIROSHIMA, Japan a. Breeding system. Euplotes spec. (Ciliata) KATHIRESAN. S. M.B., B.S. — Dept. of Anat., Madurai Med. Coll., MA- DURAI, South India KATO, K. Ph.D. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Histochemical and autoradiographical studies on mucopolysaccharides in the salivary gland. Drosophila spec. (Drosophilidae, Diptera) , Brady sia spec. (Chironomidae, Diptera), Smittia spec. (Sciaridae, Diptera) (in collaboration with J. L. SIRLIN) 72 KATO, M. D.Sc. — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ.. KYOTO, Japan a. Mechanism of pigment formation. Bombyx mori, Papilio xuthus hondoen- sis, Philosamia cynthia ricini (Lepidoptera) KATO. M. B.Sc — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. The mechanism of Wolffian lens regeneration. (Amphibia) KATO, Y. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W University Parkway, BALTIMORE 10, Md., U.S.A. a. Development of flavin-enzymes in the embryo. Gallus domesticus (Aves) b. Role of RNA in enzyme synthesis in the embryo. Rana pipiens (Anura) KATSH, S. B.A., M.S., Ph.D. — Dept. of Pharmacol., Univ. of Colorado Med. Center, 4200 E. 9th Ave., DENVER 20, Colo., U.S.A. a. Anti-fertility and anti-spermatogenic antibodies: their respective antigens and sites of action. (Mammalia) KATSURA, S. M.D. — First Dept. of Anat. and Komatsujima Station for Exper. Biol., School of Med., Tokushima Univ., TOKUSHIMA, Japan a. Cytological studies on the activation mechanism of early development investigated with the supravital staining method. (Echinodermata; Mam- malia) KAWAKAMI, I. M.Sc, D.Sc, M.I.I.E., Prof. — Dept. of Biol., Kyushu Univ., FUKUOKA, Japan a. Organizing substances in tissues. (Mammalia) b. Effects of chemicals on development. (Amphibia), Gallus spec, Mus spec. (Amniota) c Special inductive capacities of cancer tissues. (Amphibia; Mammalia) d. Fractionation of inductive agents. Gallus domesticus (Aves) KAWAKAMI, Mrs. K. I. D.Sc, D.M. — Dept. of Biol., Fac. of Sci.,Kyushu Univ., FUKUOKA, Japan a. Mechanism of regeneration. Eisenia foetida (Oligochaeta) b. Calcium metabolism and pearl-sac formation. Pinctada martensii (Mol- lusca) c Mechanism of pearl-sac formation. Pinctada martensii (Mollusca) d. Spawning of germ-cells. Pinctada martensii (Mollusca) e. Electron microscopic study on the mantle tissue. Pinctada martensii (Mol- lusca) KAWAMURA, T. D.Sc, Prof. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, HIROSHIMA, Japan a. Hybridization between European and Japanese forms. (Ranidae, Anura) b. Synthesis of amphidiploids. (Ranidae, Anura) c Synthesis of nucleo-cytoplasmic hybrids between different species. (Ra- nidae, Anura) KECK, K. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Nuclear differentiation and enzyme synthesis during embryogenesis. Rana pipiens (Anura) b. Nuclear and cytoplasmic factors determining the species specificity of enzyme proteins. Acetabularia spp. (Algae) KELLY, W. A. B.Sc — Wye Coll.. Near ASHFORD, Kent, England a. Effects of lethal genes on embryonic development. Gallus domesticus (Aves) (in collaboration with D. A. EDE) 73 Kelly-Kle b. Effects of tumour-inducing viruses on embryonic and early development. Gallus domesticus (Aves) (in collaboration with D. A. EDE) KEMP, N. E. Ph.D., M.I.I.E. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. a. Use of radioactive isotopes as tracers in studies on synthesis of proteins in skin, ovary and digestive tract. Rana pipiens (Anura) b. Electron microscopy of developing oocytes with special reference to the development of yolk and egg membranes (comparative study). (Everte- brata, Vertebrata) c. Changes in the cortical cytoplasm following fertilization. Fundulus hete- roclitus (Teleostei) , Rana pipiens (Anura) d. Electron microscopic analysis of metamorphic changes in skin, skeleton and other organs. Rana pipiens (Anura) e. Effects of ionizing radiations on submicroscopic structure. Rana pipiens (Anura) KERR, N. S. A.B., M.S., Ph.D. — Dept. of Zool., Coll. of Sci., Lit. and Arts, Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. a. The morphogenesis of non-flagellated amoeba to flagellated amoeba, of amoeba to gametes, of zygotes to plasmodia, and of plasmodia to fruiting bodies. Didymium nigripes ( Eumycetozoina) b. Developmental genetics. Didymium nigripes (Eumycetozoina) KIDO, T. D.Sc — Zool. Inst., Fac. of Sci., Univ. of Kanazawa, KANA- ZAWA, Japan a. Analysis of mechanism of pharynx-formation. Dugesia gonocephala (Tur~ bellaria) b. Depigmentation of eye after treatment with thiourea and iodine. Dugesia gonocephala (Turbellaria) KIELB6WNA, Miss L. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool., Uniw. we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Poland KIENY, Mrs. M. A. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Problemes relatifs aux causes de l'achondroplasie. Gallus gallus, var. Creeper (Aves) (en collaboration avec Et. C. WOLFF) b. Etude de l'inducteur primaire du bourgeon de membre. Gallus gallus (Aves) c. Recherches sur la competition entre le tibia et le perone au cours du developpement embryonnaire. Gallus gallus (Aves) KILLE, R. A. B.Sc, Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Fertilization. Lampetra spec. (Cyclostomata) K1MMEL, D. L. Jr. M.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Biochemical differentiation of cells of the nervous system. Rana pipiens (Anura) KINDAHL, Miss M. E. Ph.D. — Linnegatan 22, STOCKHOLM 6, Swe- den KING, R. C. Ph.D. — Cresap Lab., Northwestern Univ., EVANSTON, 111., U.S.A. a. Oogenesis. Drosophila melanogaster (Diptera) 74 KING, Th. J. B.S., M.S., Ph.D., M.I.I.E. — Inst, for Cancer Research, 7701 Burholme Avenue, PHILADELPHIA 11, Pa., U.S.A. a. Transplantation of embryonic nuclei into activated body cavity eggs. Rana pipicns (Anura) (in collaboration with S. SUBTELNY) b. Transplantation of tumor (Lucke renal adenocarcinoma) nuclei into enuc- leated eggs. Rana pipiens (Anura) (in collaboration with R. G. McKINNELL) c. Studies on nuclear differentiation in embryos. Rana pipiens (Anura) (in collaboration with R. W. BRIGGS, Bloomington, Ind.) d. Chromosome analysis of embryonic stages. Rana pipiens (Anura) KING, T. S. M.B., Ch.B. — Dept. of Anat., Fac. of Med., Univ. of Shef- field, SHEFFIELD, England a. Histological studies of the cardiac conducting system. (Cetacea; Carni- vora) KINOSHITA, S. Ph.D. — Embryol. Section, Dept. of Biol., Fac. of Sci.. Ochanomizu Univ., Bunkyo-ku, TOKYO, Japan a. Mechanism of flagellar movement. Hemicentrotus pulchercimus (Echi- noidea) b. Axial determination in the egg. Hemicentrotus pulcherrimus (Echinoidea) KINOSITA, H. Dr.Sci., Prof. — Zool. Inst., Fac. of Sci., Tokyo Univ., Bunkyo-ku, TOKYO, Japan (no embryological work in progress) KIORTSIS, V. Dr. esSci., Prof. —Zool. Lab. and Museum, Univ. of Athens, ATHENS, Greece a. Limb regeneration in the adult and larval animal. (Urodela) b. Protein electrophoresis of serum and of regenerating tissues in adults and larvae. Triturus cristatus, T. alpestris, T. helveticus, Salamandra salamandra (Urodela) c. Culture in v i t r o of regeneration blastema. (Urodela) KIRBY, D. R. S. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Museum. OXFORD, England KIRRMANN, J.-M. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. L'influence protectrice de la cysteamine et de differentes substances chimiques contre Taction teratogene des rayons X. KISHIDA, Y. — Zool. Inst.., Fac. of Sci., Univ. of Kanazawa, KANA- ZAWA, Japan a. Depigmentation of eye after treatment with thiocarbamide and its deri- vatives. Dugesia gonocephala (Turbellaria) b. Mechanisms of eye formation during regeneration. Dugesia gonocaphala (Turbellaria) KLEIN, Miss C. Lie. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Correlations neuro-endocrines. Differenciation des noyaux actifs dien- cephaliques. (Amphibia) KLEIN, N. W. Ph.D. — Dept. of Zool., Univ. of Connecticut, STORRS, Conn., U.S.A. a. Biochemical study of growth and differentiation of explanted embryos. Gallus spec. (Aves) (in collaboration with H. HERRMANN) 75 Kle-Kos KLEIN, R. L. B.A., M.A., Ph.D. — Univ. of Mississippi Med. Center, JACKSON, Miss., U.S.A. a. Possible Na binding by the cardiac jelly of the young embryonic heart; relation of mucopolysaccharide and extremely high Na content of early hearts. Gallus domesticus (Aves) KLEISS, E. Dr.Med., Prof. — Dept. of Embryol, Fac. de Ci. Med., Univer- sidad de Los Andes, MfiRIDA, Venezuela — personal address: Apartado 38, MfiRIDA, Venezuela a. Development of the tongue and other organs of the mouth; teratology. Homo sapiens (Primates) KLOFT, W. Dr.rer.nat. — Inst, fur Angewandte Zool. der Univ., Naturw. Fak., Rontgenring 10, WQRZBURG, Deutsche Bundesrepublik a. Pathology of development after irradiation. (Aphidae, Hemipteridea) KNIGHT, Miss P. F. B.S., M.S., Ph.D. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Cathepsin (intra-cellular proteinase) analyses in various organs. Gallus spec. (Aves), Oryctolagus cuniculus (Lagomorpha), Rattus spec. (Ro- dentia) b. Relation of cathepsin activity to state of immunity. Gallus spec. (Aves), Oryctolagus cuniculus (Lagomorpha), Rattus spec. (Rodentia) KNIGHT-JONES, E. W. B.Sc, D.Phil., Prof. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWANSEA, Glamorganshire, Wales a. Factors inducing metamorphosis. Hydroides norvegica (Polychaeta) KOCHER, W. Dr.— Anat. Inst, der Univ., Gloriastr. 19, ZURICH 7, Schweiz a. Viruswirkung auf Embryonen unter Heranziehung der Explantations- methode mit ganzen Organen. (Vertebrata), Homo sapiens (Primates) (in Zusammenarbeit mit G. TONDURY, K. THEILER und J. RICKENBACHER) b. Experimentell-genetische Untersuchungen iiber die Entwicklung der Wirbelsaule. Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, K. THEILER und J. RICKENBACHER) c. Experimentell-genetische Untersuchungen verschiedener Mutanten mit Schwerhorigkeit verschiedener Grade. Mus musculus (Rodentia) (in Zu- sammenarbeit mit G. TONDURY, K. THEILER und J. RICKEN- BACHER) d. Untersuchungen iiber den Einfluss radiogenetischer Substanzen auf die Differenzierung der Extremitatenanlagen. Gallus domesticus (Aves), Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, K. THEILER und J. RICKENBACHER) KOCK, J. M. de — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STEL- LENBOSCH, South Africa a. Ontogenesis of the chondrocranium. Melopsittacus undulatus (Psittaci, Aves) KOECKE, H.-U. Dr.phil. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KOLN-Lindenthal, Deutsche Bundesrepublik a. Krebsproblem als entwicklungsphysiologisches Problem. Columba spec. (Aves), Mus spec. (Rodentia) b. Probleme der Entwicklungsphysiologie. Columba spec. (Aves) c. Neuralleistenentwicklung und Pigmentierung. Anas spec. (Aves) 76 d. Identifizierung von Melanoblasten und Melaningenese. Anas domestica (Aves) e. Determination von Neuralleistenzellen und Derivaten. Anas domestica (Aves) KOHONEN, P. J. Phil.lic. — Dept. of Zool., Univ. of Turku, TURKU, Finland a. The thermolability of mesodermalizing inductive agents. Triturus vul- garis (Urodela) KOJIMA, M. K. M.A., D.Sc. — Marine Biol. Station, Nagoya Univ., Su- gashima-cho, TOBA, Mie-ken, Japan a. Physiological studies on the cleavage of eggs. Hemicentrotus pulcherri- mus, Pseudocentrotus depressus (Echinoidea) KOLLROS, J. J. Ph.D., M.I.I.E., Prof. — Dept. of Zool, State Univ. of Iowa, IOWA City, Iowa, U.S.A. KONIECZNA (MARCZYnSKA), Mrs. B. M.Sc. — Dept. of Biol, and Embryol., Acad, of Med., ul. Kopernika 7, KRAK6W, Poland a. Immunological tolerance in tumour grafting. Mesocricetus auratus, Mas musculus (Rodentia) KONIGSBERG, I. R. A.B., Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. The growth and differentiation of the skeletal muscle cell. Gallus domes- ticus (Aves) b. Factors controlling developmental expression in cell culture. Gallus domesticus (Aves) KONOK, I. B. — The Biol. Research Inst, of the Hungarian Acad, of Sci., TIHANY, Lake Balaton, Hungary a. Comparative physiological and histological studies on the neuro-endocrine activity of the nervous system. (Decapoda) b. Studies on the chemical nature and the effect-mechanism of neurosecre- tion. (Decapoda) KONOPACKA, Mrs. B. Dr., M.V.S.S., Prof. — Inst, of Histol. and Em- bryol., Veter. Fac, ul. Grochowska 272, WARSZAWA, Poland a. Histochemical studies on the differentiation of epithelial cells in the intestine. Sus domestica (Artiodactyla) b. Histochemical studies on the developing mesonephros. Sus domestica (Artiodactyla) c. Phospholipids in differentiating tissues. Sus domestica (Artiodactyla) d. Histochemical studies on early development. Nereis diversicolor (Anne- lida) KONYUKHOV, B. V. Dr. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. KOONO, J. Dr.Med. — Anat. Dept., Fac. of Med., Nagasaki Univ., NA- GASAKI, Japan KOSCIELSKI, B. M.Ph. — ZaWad Zool. Ogolnej, Inst. Zool., Uniw. we Wrodawiu, ul. Sienkiewicza 21, WROCLAW, Poland KOSHELEV, B. V. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Morpho-ecological peculiarities of oogenesis in closely related species. Perca fluviatilis, Acerina cernua, A. acerina, Lucioperca lucioperca (Per- cidae, Teleostei) 77 Kot-Lan KOTANI, M. M.Sc. — Dept. of Biol., Fac. of Sci., Osaka City Univ., Sugi- moto-cho, Sumiyoshi-ku, OSAKA, Japan a. Differentiation mechanism of germ cells. (Urodela; Aves) b. Histochemical studies on the early gonadogenesis. (Urodela) KRABBE, K. H. Dr.Med.— Tornblad-Inst. for comp. Embryol., Biskops- gatan 7, LUND, Sweden (from Kommunehospitalet, COPENHAGEN, Denmark) — H. C. 0rstedsvej 66, COPENHAGEN V, Denmark a. Morphogenesis of the brain. (Pisces; Amphibia) KRAUS, R. MUDr. — Embryolog. ustav lekafske fak., Univ. Karlovy, A1- bertov 4, PRAHA 2, Czechoslovakia a. Development of the glomus caroticum KRAUSE, G. Dr.phil., M.I.I.E., Prof. — Zool. Inst, der Univ. Wiirzburg, Rontgenring 10, WQRZBURG, Deutsche Bundesrepublik a. Experimentell erzeugte Duplicitas cruciata. Tachycines asynamorus (Or- thoptera) b. Analyse der Keimanlagenbildung. Tachycines asynamorus (Orthoptera) c. Embryonalentwicklung. Notonecta glauca (Hemipteroidea) d. Kultur embryonaler Gewebe. (Insecta) KREDIET, P. — Veter. Anat. and Embryol. Inst., State Univ., Bekkerstr. 141, UTRECHT, Netherlands a. Ontogenetic malformations of the great vessels in neonates and adults. (Mammalia) b. Development of the heart. (Mammalia) KROEGER, H. Dr.rer.nat. — Zool. Inst, der Eidg. Techn. Hochschule, Uni- versitatstr. 2, ZURICH, Schweiz a. Developmental metabolism of salivary gland chromosomes. Drosophila melanogaster (Diptera) b. Developmental genetics of pattern formation. Drosophila melanogaster (Diptera) KROPP, B. N. A.M., Ph.D., Prof . — Dept. of Histol. and Embryol., Med. School, Queen's Univ., KINGSTON, Ont., Canada a. Effects of certain metals on development. Gallus domesticus (Aves) KRZANOWSKA (DATK6WNA), Mrs. H. Ph.D.— Dept. of Exper. Biol., Inst, of Zootechn., PULAWY, Poland a. Studies on heterosis: fertilization, embryonal growth and embryonal mor- tality in inbred and crossbred animals. Mus musculus (Rodentia) KRZYSTOFOWICZ, Miss A. D.Sc. — Zool. Dept. of the Jagiellonian Univ., sw. Anny 6, KRAKOW. Poland a. Descriptive embryology. (Curculionidae, Coleoptera) b. Histochemical studies on development. Melasoma populi (Coleoptera) (in collaboration with Cz. JURA and Miss B. Wr^GLARSKA) KUCIAS, J. Mgr. — Chair of Gener. Biol., Silesian Acad, of Med., Rokit- nica, ZABRZE 8, Poland a. The cytology and cytochemistry of the regenerating tail. Xenopus laevis (Anura) b. The causes and mechanisms of blastematic regeneration KOHN, A. Dr.phil.h.c, Dr.rer.nat., Dr.med.h.c, F.I. I.E., Prof. — Max Planck Inst. f. Biol., Spemannstr. 34, TUBINGEN, Deutsche Bundesrepublik (no embryological work in progress) 78 KUHN, O. Dr.rer.nat., Prof. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KoLN-Lindenthal, Deutsche Bundesrepublik a. Hormonwirkungen in der Morphogenese. b. Entwicklungsphysiologie der Feder. (Aves) c. Wirkungsweise carcinogener und anderer Substanzen auf tierische Ge- webe. d. Regeneration und Wundheilung. KULANGARA, A. C. M.A., Ph.D. — Worcester Found, for Exper. Biol., SHREWSBURY, Mass., U.S.A. a. Intrauterine passage of macromolecules from mother to foetus. Lepus spp. (Lagomorpha) , Rattus norvegicus, Cavia porcellus (Rodentia) , Felis domestica (Carnivora), Bos taurus (Artiodactyla) b. Acquired tolerance to skin homografts. Gallus domesticus (Aves) c. Mechanism of blastocyst implantation. Lepus spp. (Lagomorpha) KUNSKI, H. M.D. — Inst, of Histol. and Embryol., Acad, of Med., Naruto- wicza 60, LoDZ, Poland a. Histochemistry of embryonal adrenal glands. (Mammalia) KURU, M. M.D. — Inst, for Cancer Research, Med. School, Osaka Univ., Dojima-hamadori, Fukushima-ku, OSAKA, Japan a. Isolation of an oncotrephin-like substance from regenerating liver. Rattus spec. (Rodentia) b. Isolation of the mitosis promoting substance, oncotrephin, from malignant tumors. (Mammalia) c. Isolation of an oncotrephin-like substance from embryonic extract. Gallus spec. (Aves) KUUSI, Miss T. K. Dr.Phil., M.I.I.E. — Dept. of Physiol. Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI, Finland (no embryological work in progress) LACY, D. Dr. — Dept. of Zool. & Comp. Anat., St. Bartholomew's Med. Coll., Charterhouse Square, LONDON E.C. 1, England a. Factors influencing spermatogenesis. Rattus spec. (Rodentia) LAGUCHEV, S. S. Dr. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. LAHIRI, D. M.Sc. — Dept. of Zool., Presidency Coll., College St., CAL- CUTTA 12, India a. Physiology of cell-contact. (Porifera) (in collaboration with S. BANER- JEE, B. GANGULY and S. MOOKERJEE) LALLIER, R. A. Dr. es Sci., M.I.I.E. — Station Zoologique, VILLE- FRANCHE sur Mer, A. M., France a. Etude de la determination embryonnaire. Paracentrotus lividus, Arbacia punctulata (Echinoidea) b. Etude de l'induction. Triturus taeniatus (Urodela) LAMONT, Miss D. M. B.A. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Study of cell relations in tissue culture. Gallus domesticus (Aves), Mus musculus (Rodentia) (in collaboration with M. ABERCROMBIE and Mrs. E. M. STEPHENSON, Kensington, N.S.W., Australia) LANDAUER. W. Ph.D., F.I.I.E., Prof. — Dept. of Anim. Genet., Storrs Agric. Exper. Stat., Univ. of Connecticut, STORRS, Conn., U.S.A. a. Developmental studies on various mutants, such as ,, duplicate", , .creeper" etc. Gallus domesticus (Aves) 79 Landauer-Leg b. A causal analysis of teratogenic action of insulin and other chemical compounds on developing embryos. Gallus domesticus (Aves) c. Hereditary (lethal) cyclocephaly and cyclopia. Gallus domesticus (Aves) d. The nature and significance of phenocopies. Gallus domesticus (Aves) e. The genetic role of sporadic variations. Gallus domesticus (Aves) LANGMAN, J. M.D., Ph.D., M.I.I.E., Prof. — Dept. of Anat., McGill Univ., MONTREAL, Quebec, Canada a. Influence of antibodies and antigens on growth and development. Gallus domesticus (Aves) b. Antigenic properties of reproductive organs. (Rodentia) c. Immuno-embryological research into eye development. Gallus domesticus (Aves) d. Immuno-embryological research into brain development. Gallus domes- ticus (Aves) LARAMBERGUE, M. de Dr. es Sci., Prof. — Lab. de Zool. et Biol, anim., Fac. des Sci., POITIERS, Vienne, France a. Recherches sur le developpement embryonnaire de l'appareil genital her- maphrodite. (Gastropoda) b. Differenciation des gametes chez des formes hermaphrodites. (Gastro- poda) c. Croissance et embryologie. Achatina spec. (Gastropoda) LA SPINA, Miss R. Ph.D. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Cytochemical investigations on eggs. (Ascidiae) b. The analysis of the colour pattern. Discoglossus pictus (Anura) LATIMER, H. B. Ph.D., Prof. (Emer.) — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Study of two races, to determine the variation in relative weights of the various organs and parts in a large and in a small form. Oryctolagus cuniculus (Lagomorpha) b. Quantitative study of the parts of the postnatal heart. Oryctolagus cuni- culus (Lagomorpha) LAUFER, H. B.S. M.A., Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Immunochemical study of muscle protein development in the embryo and in the adult limb regenerate. (Amphibia) b. Role of specific blood and tissue proteins in development and during regeneration. Samia cecropia and other Saturniidae (Lepidoptera) c. The role of the nerve in limb regeneration. (Amphibia) LAVARACK, J. O. M.B., B.S., Ph.D. — Anat. Dept., Univ. of Melbourne, PARKVILLE, N. 2, Victoria, Australia a. Histochemical investigation of early neural, notochordal and related tis- sues. Gallus gallus (Aves) LaVELLE, A. B.S., M.A., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. LAWRENCE, I. — Dept. of Anat., Med. School, Univ. of Kansas, LAW- RENCE, Kansas, U.S.A. a. An experimental analysis of comb development in the embryo. Gallus domesticus (Aves) (in collaboration with B. S. WENGER) 80 LAZARD (HAUBEN), Mrs. L. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Limb regeneration. Ambystoma punctatum (Urodela) LAZZARINI-ROBERTSON, A. Jr. M.D., Ph.D. — Dept. of Pathol., New York Univ. School of Med., 550 First Ave., NEW YORK 16, N.Y., U.S.A. LEATHEM, J. H. Ph.D. — Rutgers Univ., NEW BRUNSWICK, N.J., U.S.A. a. Nutritional influences on fetal development, and biochemical changes associated with them. (Rodentia) LEBLOND, C. P. M.D., Ph.D., Prof. — Dept. of Anat., McGill Univ., MONTREAL, Quebec, Canada a. Development of the thyroid gland. (Vertebrata) b. The development of bones and teeth as shown on radioautographs with the help of radio-carbon-containing substances. (Vertebrata) LEFFORD, Miss F. M.B., B.S. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Studies on cell locomotory behaviour, in tissue culture. Gallus domesticus (Aves), Cavia spec. (Rodentia) LEGAULT, R. O. — Dept. of Biol., Univ. of Ottawa, OTTAWA, Ontario, Canada a. Early embryology from fertilization through gastrulation. Osmerus mor- dax, Brachydanio rerio, Percina caprodes (Teleostei) (in collaboration with A. H. STOCKARD, Ann Arbor) LEGAY, J. M. Dr. es Sci. — Lab. de Zool. exper., Fac. des Sci., 16 Quai Claude Bernard, LYON, France a. Modifications de l'heritabilite en fonction du developpement ou des con- ditions de ce dernier. Drosophila melanog aster (Diptera), Bombyx mori ( Lepidoptera) LEGENDRE, R. Dr.rer.nat., Dr. es Sci., Prof. — Lab. de Zool. et de Biol, gener., Fac. de Sci., Univ. de Madagascar, TANANARIVE, Madagas- car a. Developpement embryonnaire et post-embryonnaire. Archaea spec. (Ara- neidae) LEGHISSA, S. Ph.D., M.I.I.E., Prof. — 1st. di Anat. comp., Via Belmeloro 8, BOLOGNA (103), Italia a. Study of neurogenesis. b. Comparative neurology. c. Nucleic acids, metabolism and proteins during metamorphosis. (Anura) d. Histogenesis of tectum opticum. (Aves) e. Differentiation of nervous tissue and nucleic acids. f. Histogenesis of the liver. Gallus spec. (Aves) g. Nervous activity in the embryonic nervous system. Gallus spec. (Aves) h. Thymus and metamorphosis. (Anura) i. Development and organisation of telencephalon. (Aves) LEGNAME, A. H. — Inst, de Biol. Gener. y Embriol. Exper., Casilla de Cor reos 193, TUCUMAN, Argentina a. Oxidative reserve in early development. Bufo arenarum (Anura) b. Catalase in early development. Bufo arenarum (Anura) 81 Leg-Lin LEGRAND, J.-J. Dr. es Sci., Prof. — Lab. de Zool. et Biol, anim., Fac. des Sci., POITIERS, Vienne, France a. Determination et differentiation du sexe, castrations, greffes, correlations humorales. Etude genetique de la monogenic (Oniscoidea, Isopoda, Crustacea) b. Developpement des coaptations. (Oniscoidea, Isopoda; Decapoda, Crus- tacea), (Insecta) c. Etude de la croissance. (Oniscoidea, Isopoda, Crustacea) d. Modalites de la reproduction. Platyarthrus schoblii (Oniscoidea, Isopoda, Crustacea) e. Analyse biometrique des populations de deux especes soeurs dans le nord et le midi de la France. Philoscia muscorum, P. affinis (Oniscoidea, Iso- poda, Crustacea) LEHMAN, H. E. M.A., Ph.D., M.I.I.E. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. a. Pigment pattern formation, cell migration and tissue affinities in the neural crest. Triturus spec, Amby stoma spec. (Urodela) (in collabora- tion with Mrs. L. M. Y. LEHMAN) b. Hybridization and nucleocytoplasmic relations. (Echinoidea; Amphibia) (in collaboration with Mrs. L. M. Y. LEHMAN) LEHMAN, Mrs. L. M. YOUNGS M.A., Ph.D. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. a. Pigment pattern formation, cell migration and tissue affinities in neural crest. Triturus spec, Amby stoma spec. (Amphibia) (in collaboration with H. E. LEHMAN) b. Hybridization and nucleocytoplasmic relations. (Echinoidea; Amphibia) (in collaboration with H. E. LEHMAN) LEHMANN, F. E. Dr.Phil., F.I.I.E., Prof. — Zool. Inst, der Univ. Bern, Sahlistr. 8, BERN, Schweiz LEIKOLA, A. H. A. Phil.lic — Dept. of Physiol. Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI, Finland a. The competence of gastrula ectoderm. Triturus vulgaris (Urodela) LEME2, L. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a. Embryonal haematology. Gallus domesticus (Aves) b. Experimental morphology of the pneumogastric system. Gallus domes- ticus (Aves) LENDER, Th. M.I.I.E., Prof. — Lab. de Biol. Anim., S.P.C.N., Fac. des Sci. de Paris, Centre d'Orsay, ORSAY (S.SO.), France a. Problemes de la regeneration: substances inductrices et inhibitrices. (Planariidae, Turbellaria) b. Neurosecretion. (Planariidae, Turbellaria) c Regeneration. Gibbosa asterina (Asteroidea, Echinodermata) LENNEP, E. W. van M.Sc — Dept. of Histol. and Embryol., Univ. of Syd- ney, SYDNEY, N.S.W., Australia a. Development of cell types in adenohypophysis. (Marsupialia) , Ovis aries (Artiodactyla) b. Placentation. Camelus dromedarius (Artiodactyla) LEONE. V. M.D., M.I.I.E. — 1st. di Zool. e Anat. Comp., Univ. di Milano. Via Celoria 10, MILANO, Italia 82 LEROY, P. J. M. Dr. es Sci. — Lab. d'Histophysiol., Coll. de France, 4 Ave- nue Gordon Bennett, PARIS XVI, France LEUSSINK, J. A. M.Sc. — Hubrecht Lab., Intern. Embryol. Inst., Janskerk- hof 2, UTRECHT, Netherlands a. Relations between size and differentiation of inductor and of induced structures in neural induction. (Urodela) LEVAK, Miss B. M.Sc. — Inst, de Biol.; Fac. de Med., Salata, ZAGREB, Yougoslavie a. Investigation of differentiation of the embryo in the anterior chamber of the eye. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB) LEVI, G. L. Dr., F.I. I.E., Prof. (Emer.) — 1st. di Anat. umana, Fac. di Med., Corso Massimo d'Azeglio 52, TORINO, Italia LEVI-MONTALCINI, Miss R. M.D., F.I.I.E. — Dept. of Zool., Washing- ton Univ., ST. LOUIS 30, Mo., U.S.A. a. Neuro-embryology. (Aves) LEWIS, W. H. Dr., F.I.I.E., Prof. (Emer.) — Wistar Inst, of Anat. and Biol., PHILADELPHIA 4, Pa., U.S.A. LHOTKA, J. F. M.D., Ph.D. — Dept. of Anat., School of Med., Univ. of Oklahoma, OKLAHOMA City, Okla., U.S.A. a. Distribution of polysaccharides in the developing vascular system. Rattus spec. (Rodentia) LI, Mrs. Yu-Ying FU Ph.D. — Biochem. Dept., Howard Hughes Med. Inst., 1800 N.W. 10 Avenue, MIAMI 36, Florida, U.S.A. a. Thyroid function in the fetus. Rattus spec, Homo sapiens (Mammalia) b. Effects of P32 and C14 on the embryo. (Orthoptera) LIEBER, Miss A. Dr.rer.nat. — Anat. Inst, der Univ., Robert Kochstr. 6, MARBURG/Lahn, Deutsche Bundesiepublik LIEDKE, Mrs. K. BEYER Ph.D. — Dept. of Biol. Sci., Fairleigh Dickinson Univ., TEANECK, N.J., U.S.A. a. Further studies with purine analogues in development, involving histo- chemistry and tissue culture b. Induction and differentiation studies using tritiated thymidine and cyti- dine. Rana pipiens (Anura) LILLELUND, K. Dr. — Inst, fur Fischereibiol. der Univ. Hamburg, Hol- stenwall 24, HAMBURG 36, Deutsche Bundesrepublik a. Development of eggs and fry under different hydrological conditions (temperature, salt proportion). Osmerus e. epetlanus (Teleostei) LIMBORGH, J. van M.D. — Anat.-Embryol. Lab., State Univ., Janskerkhof 3A, UTRECHT, Netherlands a. Origin of the asymmetry of the gonads. Anas boschas (Aves) b. Sex differentiation. Anas boschas (Aves) LINDAHL, P. E. Fil.Dr., F.I.I.E., Prof. — Inst, of Zoophysiol., Univ. of Uppsala, UPPSALA, Sweden (no embryological work in progress) LINDBERG, N. O. H. Phil.Dr. — Wenner-Gren's Inst, for exper. Biol., Norrtullsgatan 16, STOCKHOLM Va., Sweden LINDH, J. Med.D. — Dept. of Anat., Univ. of Lund, Biskopsgatan 7, LUND, Sweden a. Prenatal development of the gonads. Mesocticetus spec, Rattus spec (Rodentia) 83 Lio-Lut LIOSNER, L. D. Dr. — Inst, of Exper. Biol. Acad, of Med. Sci. of the U.S.S.R., Baltyiskaya 8, MOSCOW D-315, U.S.S.R. LIOTTI, F. S. Dott. — 1st. di Biol, gen., Fondazione Agraria, S. Pietro, PERUGIA, Italia a. Sviluppo di meristemi radicali in esperienze di centrifugazione. Vicia [aba (Leguminosae) b. Influenza del CoCl2 sulla mortalita da raggi X. Bufo vulgaris larvae (Anura) c. Azione delle gibberelline nello sviluppo embrionale. LISOWSKI, F. P. L.R.C.P., L.R.C.S.I., L.M. — Dept. of Anat., Med. School, Birmingham Univ., Edgbaston, BIRMINGHAM 15, England a. Experimental investigation of upright posture and growth. (Rodentia) b. Comparative study of growth of foot. (Primates) LIVERSAGE, R. A. B.A., A.M., Ph.D. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont, Canada a. Influence of nerves and endocrines on regeneration. Triturus viridescens (Urodela) LOCKE, M. — Developm. Biol. Center, Dept. of Anat., School of Med., Western Reserve Univ., CLEVELAND 6, Ohio, U.S.A. a. The development of cuticular patterns. (Insecta) LOEWENTHAL, Miss L. A. A.B., A.M., Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. LOFTS, B. — Dept. of Zool. & Comp. Anat., St. Bartholomew's Med. Coll., Charterhouse Square, LONDON E.C. 1, England a. Factors influencing spermatogenesis and spermiation. (Anura) LOJDA, Z. MUDr. — Embryolog. ustav lekafske fak., Univ. Karlovy, Al- bertov 4, PRAHA 2, Czechoslovakia a. Histochemistry in embryology. Homo sapiens (Primates) LONG, W. N. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Determinations of blood, amniotic and intervillous space pressures throughout pregnancy. Macaca mulatta (Primates) (in collaboration with Miss E. M. RAMSEY and G. W. CORNER Jr.) LOPASHOV, G. V. Dr.Biol.Sci., F.I.I.E., Prof. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Action of homogenate fractions and cell secretions from different organs and their rudiments, and of some complex milieus on the development of embryonic cells (gastrula ectoderm, neural plate, eye vesicle). Rana arva- lis. R. temporaria, R. ridibunda (Anura), Amby stoma mexicanum (Uro- dela) b. Introduction of intracellular particles from different organs and their rudiments into embryonic cells (gastrula ectoderm, neural plate). Rana arvalis, R. ridibunda, Xenopus laevis (Anura) c. Cultivation of isolated germ cells and cells of early organ rudiments in the eye chamber of larvae growing on different media. Rana ridibunda, R. arvalis, R. temporaria, Bombina bombina, Xenopus laevis (Anura) LOS, J. A. Med. Dr. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Normal and abnormal development of the heart. Homo sapiens and other Animalia (in collaboration with J. DANKMEIJER) 84 LOUVET, J. -P. Lie. es Sci. — Lab. de Zool. exper., Fac. des Sci. de Bor- deaux, 40 Rue Lamartine, TALENCE (Gironde), France a. Recherches descriptives et experimentales sur la formation de la bande- lette embryonnaire. Carausius spec. (Orthoptera) L0VTRUP, S. Dr.Phil., M.I.I.E., M.N.Y.Acad.Sci. — Dept. of Histol., Univ. of Goteborg, Medicinaregatan 5, GOTEBORG SV, Sweden a. Mechanism of determination of bilateral symmetry and of gastrulation. (Amphibia) b. Permeability and osmotic swelling. (Amphibia) LUCEY, E. C. A. B.Sc. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland LODTKE, H. Dr., Prof. — Zool. Inst, der Univ., Katharinenstr. 20, FREI- BURG i. Brsg., Deutsche Bundesrepublik a. Physiology of development. Carabus spec. (Carabidae, Coleoptera), Notonecta spec. (Notonectidae, Hemiptera) LUDWIG, D. A.B., Ph.D., Prof . — Biol. Lab., Fordham Univ., NEW YORK 58, N.Y., U.S.A. a. Effects of substrates and inhibitors on oxygen consumption of homo- genates during embryonic development. Tenebrio molitor, Popillia japo- nica (Coleoptera) b. Study of respiratory enzymes during development. Tenebrio molitor (Coleoptera) c. Effects of parental age. Tenebrio molitor (Coleoptera) LUDWIG, K. S. Dr.med., Prof. — Anat. Inst, der Univ., Pestalozzistr. 20, BASEL, Schweiz LUTHER, W. Dr.Phil., M.I.I.E., Prof. — Zool. Inst, der Techn. Hoch- schule, DARMSTADT, Deutsche Bundesrepublik a. Regeneration (limb, skin). (Urodela) b. Effects of ionizing radiations on regeneration. Various spp. (Amphibia), Rattus noruegicus, Mesocricetus auratus (Rodentia) LUTZ, H. Dr. esSci., M.I. I.E., Prof. — Lab. de Zool., 1 Avenue Vercinge- torix, CLERMONT-FERRAND, France a. Developpement du blastoderme pendant les premieres heures de l'incu- bation. Anas spec. (Aves) b. La polyembryonie experimentale; l'orientation des embryons. (Aves) c. Polyembryonie experimentale. (Salmonidae, Teleostei) (en collaboration avec Mrs. Y. LUTZ (OSTERTAG)) d. Formation de l'entoblaste. (Aves) e. Action des ultra-sons sur l'embryon et sur differents organes. Gallus spec. (Aves) (en collaboration avec Mrs. Y. LUTZ (OSTERTAG)) f. Culture in v i t r o du blastoderme. (Aves) (en collaboration avec Mrs. Y. LUTZ (OSTERTAG)) g. Developpement de la glande uro-pygienne. (Aves) (en collaboration avec L. GOMOT) h. Free-martinisme spontane. (Aves) (en collaboration avec Mrs. Y. LUTZ (OSTERTAG)) LUTZ (OSTERTAG), Mrs. Y. Dr. es Sci. — Lab. de Zool, 1 Avenue Ver- cingetorix, CLERMONT-FERRAND, France a. La genese de l'asymmetrie du tractus genital et la regression des canaux de Muller par la methode d'explantations. Gallus spec. (Aves) 85 Lutz (Ostertag)-Man b. Role des hormones dans la differentiation primaire du sexe. Gallus spec. (Aves) c. Polyembryonie experimentale. (Salmonidae, Teleostei) (en collaboration avec H. LUTZ) d. Action des ultra-sons sur l'embryon et sur differents organes. Gallus spec. (Aves) (en collaboration avec H. LUTZ) e. Culture in v i t r o du blastoderme. (Aves) (en collaboration avec H. LUTZ) f. Free-martinisme spontane. (Aves) (en collaboration avec H. LUTZ) f LYNCH, W. F. M.A., M.S., Ph.D., Prof. — Dept. of Biol., St. Ambrose Coll., DAVENPORT, Iowa, U.S.A. (deceased) LYNE, A. G. B.Sc, Ph.D. — Div. of Animal Physiol., C.S.I.R.O., Ian Clunies Ross Animal Research Lab., Great Western Highway, (P.O. Box 144, Parramatta), PROSPECT, N.S.W., Australia a. Development of skin and hair. Ttichosurus vulpecula, Perameles nasuta (Marsupialia) b. Structure and development of hair follicles and associated glands. Bos indicus, B. taurus, Ovis spec. ( Artiodactyla) c. Structure and development of submental glands. Oryctolagus cuniculus (Lagomorpha) LYNN, W. G. A.B., Ph.D. — The Catholic Univ. of America, WASHING- TON, D.C., U.S.A. a. Role of the thyroid in direct development. Eleutherodactylus ricordi (Anura) b. Factors in degeneration of the pronephros. Rana pipiens (Anura) c. Effects of goitrogenic drugs upon thermal death point. Rana sylvatica (Anura) LYSER, Miss K. M. M.A., Ph.D. — Dept. of Biol., Sarah Lawrence Coll., BRONXVILLE, N.Y., U.S.A. — Dept. of Anat, Cornell Univ. Med. Coll., 1300 York Ave., NEW YORK21,N.Y., U.S.A. a. Differentiation of the central nervous system; electron microscopy. Gallus domesticus (Aves) b. Differentiation of neuroblast and nerve fiber patterns in organotypic culture. Gallus domesticus (Aves) LYTLE, C. F. A.B.. A.M., Ph.D. — Dept. of Zool.. Indiana Univ., BLOOMINGTON, Ind., U.S.A. MACMILLAN, E. W. Dr. — Dept. of Anat, Univ. of Liverpool, LIVER- POOL 3, England a. The rate of transport of spermatozoa through the ductus epididymis. (Mammalia) MacRAE, Mrs. E. J. KRUGELIS Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. a. Porphyrin synthesis. Dugesia dorotocephala (Plathelminthes) , Eisenia foetida (Annelida) b. Localization of fluorescence. Dugesia dorotocephala, Dugesia tigrina (Plathelminthes) MAGAGNINI, G. Dr.Biol.Sci. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italia a. Cytology. (Tricladidea, Turbellaria) 86 MAGGIO, Miss R. Ph.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 22, PALERMO, Italia a. Nature of the respiratory changes of the egg following fertilization. Paracentrotus lividus (Echinoidea) MAGIS, N. Lie. en Sci. Zool. — Dept. Morphol., Inst, de Zool. Ed. Van Beneden, Fac. des Sci., 22 Quai Ed. Van Beneden, LIfiGE, Belgique a. Growth and development of amictic females under controlled conditions of breeding and nutrition. (Rotatoria, Aschelminthes) MAJIMA, A. M.D., D.Med. Sci. — Research Inst, of Environmental Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA, Japan a. Study in X-ray malformations of the eye. Mus musculus (Rodentia) (in collaboration with U. MURAKAMI and Y. KAMEYAMA) b. Action of external agents controlling the manifestation of malformations. Mus musculus (Rodentia) (in collaboration with U. MURAKAMI and Y. KAMEYAMA) MAKINO, S. M.Agr., D.Sc, Prof. — Dept. of Zool., Fac. of Sci., Hokkaido Univ., North 8, West 5, SAPPORO, Japan a. Chromosome analyses in tumor tissues, with special reference to the shift of chromosomes and the arisal of new types of tumors. Rattus norvegicus (Rodentia) b. Chromosome studies in tumors, with special regard to the type and property of tumors. Homo sapiens (Primates) c. Chromosome studies of subjects with multiple congenital defects. Homo sapiens (Primates) MALAMED, S. M.S., Ph.D. — Dept. of Anat., Albert Einstein Coll. of Med., Eastchester Rd., and Morris Park Ave., NEW YORK 61, N.Y., U.S.A. a. Mitochondria in development. Rana pipiens (Anura) b. Early metabolism of hybrids. Rana pipiens (Anura) MALAN, Miss M. E. D.Sc. — Zool. Inst., Fac. of Sci., Univ. of Stellen- bosch, STELLENBOSCH, South Africa (no embryological work in progress) MANCINO, G. Dr.Biol.Sci. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italia a. Development and functionality of the gonads in hybrids. (Urodela) MANCUSO, V. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. The distribution of enzymes and other substances in the germ during development. (Evertebrata) b. Ultrastructure of some blastomeres in mosaic eggs. (Evertebrata) MANDL, Miss A. M. B.Sc, Ph.D., D.Sc. — Dept. of Anat., Med. School. Birmingham Univ., Edgbaston, BIRMINGHAM 15, England a. Embryology of the gonads. Rattus norvegicus (Rodentia) b. Effect of irradiation on the foetus. Rattus norvegicus (Rodentia) c. Quantitative studies of foetal germ cells. Rattus norvegicus (Rodentia) MANELLI, H. Dr.Nat.Hist. — 1st. di Zool. della Univ., Viale Regina Elena 324 (al Policlinico). ROMA, Italia a. Developmental potencies of the presumptive mesonephric territory. Rana esculenta (Anura) b. Embryonic homoplastic transplantation of cloacal material. (Anura) 87 Man-Mat MANGOLD, O. Dr., F.I.I.E., Prof. (Emer.) — Heiligenberg-Inst., (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepu- blik a. Einfluss ausserer Faktoren auf die Entwicklung. (Urodela) b. Untersuchungen zur kausalen Morphologie des Kopfes. (Urodela) c. Untersuchungen iiber den determinierenden Einfluss des Entoderms. (Urodela) d. Spina bifida. (Urodela) MANN, T. M.D., Ph.D., Sc.D., F.R.S., M.I.I.E. — Dept. of Vet. Clin. Stu- dies, Univ. of Cambridge, CAMBRIDGE, England a. Biochemistry of semen. (Mammalia) MANNER, H. W. B.S., M.S., Ph.D. — Div. of Biol, and Physical Sciences. Utica Coll. of Syracuse Univ., UTICA, N.Y., U.S.A. a. Role of cigarette tars in regeneration. Triturus viridescens (Urodela) MANSUETO, Miss C. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Investigations on development by use of radio-isotopes. (Ascidiae) MANTON, S. M. F.R.S., M.A., Sc.D. — Zool. Dept., British Museum (Nat. Hist), LONDON S.W. 7, England MARCONNET, R. — Lab. d'Embryol., Fac. de Med., 31 Rue Lionnois, NANCY (Meurthe & Moselle), France a. Action de l'uree sur le developpement embryonnaire. (Amphibia) MARIN, G. Med. Dr. — 1st. di Zool. e Anat. comp., Fac. di Sci, Via Lore- dan 10, PADOVA, Italia a. Cell multiplication in tissue culture. MARIN (LEWIN), Mrs. L. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab d'Embryol et Teratol exper. du C.N.R.S., 49 bis Avenue de la Belle Gabrielle, NOGENT sur Marne, France a. Etude du comportement du foie embryonnaire cultive in vitro. Gallus gallus (Aves) MARKERT, C. L. Ph.D., M.I.I.E., Prof. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Chromosomal differentiation. Rana pipiens (Anura), Mus musculus (Rodentia) b. Ontogeny of isozymic patterns of enzymes. Mus musculus (Rodentia) c. Changes in synthetic ability during cellular differentiation. Gallus domes* ticus (Aves), Mus musculus (Rodentia) d. Biochemistry of development. Ascidia nigra (Ascidiae) MARKMAN, B. Phil.lic. — Wenner Gren's Inst, for exper. Biol., Norrtulls- gatan 16, STOCKHOLM Va., Sweden a. Studies of labelled precursors incorporated into eggs and embryos in different stages of development, and the correlation of the results to morphogenetic events. (Echinoidea) MARON, K. M.Sc — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland a. Regeneration in the central nervous system. (Cyclostomata; Selachii) MARSLAND, D. A., B.Sc, M.S., Ph.D. — Dept. of Biol., Washington Square Coll. of Arts and Sci., New York Univ., Washington Square, NEW YORK 3, N.Y., U.S.A. 88 a. Induction of premature cleavage furrows by centrifugation. Arbacia punctulata (Echinoidea) b. Mechanisms of cell division in marine eggs. Arbacia punctulata (Echi- noidea) c. Isolation and characterization of contractile proteins from dividing eggs. Arbacia lixula (Echinoidea) d. Isolation of mitotic apparatus from eggs after treatment with high hydro- static pressure. Arbacia punctulata (Echinoidea) e. Effects of pressure on the ATP metabolism of dividing eggs. MARTIN, Miss B. A. M.A., Ph.D. — Dept. of Biol., Brooklyn Coll., Bed- ford Ave. and Ave. H, BROOKLYN 10, N.Y., U.S.A. a. Cytology and embryology. (Insecta) MARTIN, B. F. M.D., B.Ch., B.Sc. — Dept. of Anat., Fac. of Med., Univ. of Sheffield, SHEFFIELD, England a. Histochemical studies. (Mammalia) MARTIN, P. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Chorde dorsale. Homo sapiens (Primates) MARTINET, Mrs. M. Dr. es Sci. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Influence teratogene des intoxications. Mus rattus (Rodentia) b. Influence teratogene de l'hypervitaminose A. Mus rattus, Mus musculus, Cauia cobaya (Rodentia), Oryctolagus cuniculus (Lagomorpha) c. Influence teratogene des rayons X. Mus musculus (Rodentia) MARTINOVITCH, P. M.I.I.E. — Postanski fah 522, BELGRADO, Yu- goslavia MASETTI ZANNINI, Miss A. Dr. — 1st. di Zool., Via S. Giacomo 9, BOLOGNA, Italia a. Gametogenesis and cytosexual differentiation. Helix cincta (Pulmonata, Gastropoda) MASSART, C. M.D., Prof. — Inst, of Anat. and Histoembryol., Univ. of Pisa, Via Roma 33, PISA, Italia a. Studies of the development of pharyngeal derivatives. (Microchiroptera) b. Studies on the development of uterus and vagina. (Microchiroptera) c. Developmental morphology of the bursa pharyngea. (Microchiroptera) d. Studies on the developmental morphology of Chiewitz's organ. (Micro- chiroptera) MASUI, Y. Dr.Sc. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, KOBE, Japan a. Studies on mesodermal differentiation. Triturus spec, Hynobius spec, Rana spec, Bufo spec (Amphibia) b. Erythropoiesis. Triturus spec, Hynobius spec, Rana spec, Bufo spec (Amphibia) MATEJKA, M. MUDr., C.Sc — Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., Karlovarska 48, PLZEN, Czechoslovakia a. The morphogenesis of the genital organs from the standpoint of evolu- tionary morphology. (Amniota, including Homo sapiens) MATSUDA, Mrs. N. M.A. — Biol. Inst., Fac of Sci., Nagoya Univ., Chi- kusa-ku, NAGOYA, Japan a. Environmental factors (particularly temperature) affecting the develop- ment of the ,, fused" character of vertebrae. Oryzias latipes (Teleostei) 89 Mat-Men MATSUMOTO, A. M.Sc — Dept. of Biol., Fac. of Sci., Kyushu Univ., FUKUOKA, Japan a. Electron microscopic studies on differentiating tissues. Triturus pyrtho- gaster (Urodela) MATSUMOTO, J. M.A. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Correlation between pigment formation and fluorescent substances during post-embryonal stages. Carassius auratus (Teleostei) MATUSZEWSKI, B. Mgr.phil. — Dept. of Cytol., Warsaw Univ., Kra- kowskie Przedmiescie 26/28, WARSZAWA 64, Poland a. Oogenesis. (Cecidomyidae, Diptera) b. Cytochemical investigation on the origin of the mitotic spindle. (Cecido- myidae, Diptera) MAWATARI, Sh. D.Sc. — Res. Inst, for Natural Resources, Hyakunin-cho, 400, Shinjuku, TOKYO, Japan MAY, R. M. Ph.D., Dr. es Sci., Dr. en Med., Prof. — Lab. de Biol. Anim., Pavilion Curie, Univ. de Paris, 12 Rue Cuvier, PARIS Ve, France a. Brephoblastic transplantation. Mus musculus (Rodentia) b. Tissue culture and embryonic transplantation. MAYER, G. Dr., Prof . — Lab. d'Histol. et d'Embryol., Fac. de Med., Univ. de Bordeaux, BORDEAUX, France MAZIA, D. Ph.D., Prof. — Dept. of Zool., Univ. of California, BERKE- LEY 4, Cal., U.S.A. MAZZI, V. — Inst, of comp. Anat, Via Giovanni Giolitti 34, TORINO, Italy McCAFFERTY, R. E. B.S., M.S., Ph.D. — Dept. of Anat., School of Med.. Univ. of Kentucky, LEXINGTON, Kentucky, U.S.A. McCALLION, D. J. B.A., M.A., Ph.D., Prof. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont., Canada a. The development of neural differentiation tendencies in the neurecto- derm of the chick embryo just in front of the primitive node with special emphasis upon their regional character. Gallus domesticus (Aves) b. Specific inhibition of differentiation in embryonic organs by extracts of homogenates of homologous adult organs. Gallus domesticus (Aves) c. Development of specific proteins in the central nervous system studied by fluorescence and electrophoresis. Gallus domesticus (Aves) McKAY, D. G. B.S., M.D. — Dept. of Pathol., Coll. of Physicians & Sur- geons, Columbia Univ., 630 W. 168th St., NEW YORK 32, N.Y., U.S.A. McKEEHAN, M. S. M.S., Ph.D. — Dept. of Anat., School of Med., Univ. of Virginia, CHARLOTTESVILLE, Va., U.S.A. a. Problems of growth and differentiation as studied in the developing lens. Gallus domesticus (Aves) McKENZIE, J. M.D. — Dept. of Embryol., Marischal Coll., Univ. of Aber- deen, ABERDEEN, Scotland a. The metabolic characteristics of different tissues in the early embryo. Gallus gallus (Aves) b. The cytological effects of metabolic inhibitors on the early embryo. Gal- lus gallus (Aves) McKINNELL, R. G. A.B., Ph.D. — Dept. of Zool., Newcomb Coll., Tulane Univ., NEW ORLEANS 18, Louisiana, U.S.A. 90 a. Transplantation of tumor (Lucke renal adenocarcinoma) nuclei into enu- cleated eggs. Rana pipiens (Anura) (in collaboration with Th. J. KING, Philadelphia) b. Intraspecific nuclear transplantation. Rana pipiens (kandiyohi dominant mutant) (Anura) McLAREN, Miss A. M.A., D.Phil. — Inst, of Animal Genet., Univ. Dept. of Genet., Kings Buildings, West Mains Road, EDINBURGH 9, Scot- land a. Induction of super-fecundity by hormone treatment. Mus musculus (Ro- de ntia) b. Intervarietal grafting. Solanum spec. (Solanaceae) c. Influence of early embryonic environment upon later development, inves- tigated by i n vitro cultivation of early embryos. Mus musculus (Ro- dentia) d. Influence of ageing on fecundity, in normal and unilaterally ovariecto- mized animals. Mus musculus (Rodentia) McMURRAY, Mrs. V. M. A.B., M.S., Ph.D. — Div. of Anat, Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Development of the optic tectum. Rana pipiens (Anura) McNUTT, C. W. A.B., M.S., Ph.D. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex., U.S.A. a. Analysis of morphological effects of the short ear gene. Mus musculus (Rodentia) b. A study of the dwarf gene in association with other genes. Mus musculus (Rodentia) MECKLENBURG, C. L. F. C von Fil.mag. — Embryol. Dept., Zool. Inst., Univ. of Lund, LUND, Sweden MEDAWAR, P. B. M.A., D.Phil., F.R.S., Prof. — Dept. of Zool. and Comp. Anat., Univ. Coll. of London, Gower St., LONDON W.C. 1, England MELLINGER, J. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Genese, differenciation et role des sacs vasculairs, etude experimentale. (Pisces) b. Genese, differenciation et role de la vascularisation hypophysaire. (Selachii) MELUCCI, N. — Inst, de Biol., Fac. Filosofia, Univ. de Minas Gerais, Caixa Postal 253, BELO HORIZONTE, M.G., Brazil a. Cytochemical (DNA, RNA and proteins) and cytometric studies on nuclei and nucleoli during the formation of corneal denticles of tadpoles. (Anura) (in collaboration with W. MONTEIRO and G. SCHREIBER) MENDONgA, H. Prof. — Cadeira de Histol. e Embriol., Fac. de Med., Univ. do Recife, Caixa Postal N. 616, RECIFE, Brazil MENKES, B. Dr.med., Prof . — Acad. Republ. Populare Romine, Baza de cercetari stiintifice Timisoara, Bui. Mihai Viteazul 24, TIMI§OARA, Rumania a. Embryonale Heterotransplantationen. Melanogenese. Gallus domesticus (Aves) b. Transplantation von malignen Tumoren in Embryonen. Gallus domes- ticus (Aves) 91 Menkes-Mil c. Studien an embryonalen heterostadialen Transplantaten. Gallus domes* ticus (Aves) d. Kinematographische Untersuchungen von Wachstums- und Entwick- lungsvorgangen in den embryonalen Axenorganen. Gallus domesticus (Aves) e. Transplantation von embryonalen Organen in den Hiihner-embryo. Homo sapiens (Primates) MENSCHIK, Z. B.A., M.D., D.Sc, L.M.C.C, Prof. — Dept. of Anat, School of Med., Georgetown Univ., 3900 Reservoir Road, N.W., WASHINGTON 7, D.C., U.S.A. a. Dietary factors in development. Mus musculus (Rodentia) b. Deficiency of vitamin E and essential unsaturated fatty acids in the development of the central nervous system. Mus musculus (Rodentia) MERCIER (PAROT) , Mrs. L. Dr. es Sci. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Teratogenese par sulfamides hypoglycemiants, antimetabolites. Rattus spec. (Rodentia) (en collaboration avec H. TUCHMANN-DUPLES- SIS) b. Influence de la cortisone sur la gestation et le developpement foetal. Rattus spec. (Rodentia) c. Influence des alcaloides du Rauwolfia, de la reserpine et de la deserpi- dine, sur le developpement. Rattus spec. (Rodentia) (en collaboration avec H. TUCHMANN-DUPLESSIS) MERKLE, U. Dr.med. — Anat. Inst, der Univ., TUBINGEN, Wurttem- berg, Deutsche Bundesrepublik a. Spermatogenese und Sertoli-Zellen. Rattus spec. (Rodentia) MERLE, Miss S. Lie. es Sci. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Metabolisme des acides nucleiques au cours du developpement. Arbacia lixula (Echinoidea) METZ, C. B. Ph.D., M.I.I.E. — Oceanographic Inst., Florida State Univ., TALLAHASSEE, Florida, U.S.A. MEURLING, P. B. Fil.mag. — Embryol. Dept., Zool. Inst., Univ. of Lund, LUND, Sweden MEYER, D. B. Ph.D. — Dept. of Anat., Coll. of Med., Wayne State Univ., DETROIT 7, Mich., U.S.A. a. Morphogenesis and developmental histochemistry of embryonic eye. Gal- lus domesticus (Aves) (in collaboration with R. O'RAHILLY) b. Histochemical studies of gonadal development. Gallus domesticus (Aves) c. Prenatal ossification of the skeleton. Homo sapiens (Primates) MEYLING, H. A. D.V.M., Prof. — Veter. Anat. and Embryol. Inst., State Univ., Bekkerstr. 141, UTRECHT, Netherlands a. Malformations of the heart. Sus scrofa (Artiodactyla) b. Cyclopia. Different domestic animals MIALE, Miss I. A.B., Ph.D. — Lab. of Neuroanat. Sci., NINDB, Nat. Inst. of Health, BETHESDA, Md., U.S.A. MICHAEL, M. I. B.Sc, M.Sc, Ph.D. — Dept. of Zool., Alexandria Univ., Moharram Bey, ALEXANDRIA, Egypt a. The development of the olfactory organs. Bufo regularis (Anura) b. Experimental analysis of the development of the sensory placodes. Ambystoma mexicanum (Urodela) 92 c. Experimental analysis of the development of the cephalic ganglia and other derivatives of the head neural crest. Ambystoma mexicanum (Utodela) MICHALOWSKI, J. Dr.Biol. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. Sex determination and its abnormalities. Xenopus laevis (Anura) b. Hermaphroditism. (Amphibia) c. The karyology of the red cells during development. ( Anamnia) MICHELUCCI, S. — Inst, of Anat. and Histoembryol., Univ. of Pisa, Via Roma 333, PISA, Italia a. Relations between epibranchial placodes and pharyngeal pouches in the development of the thymus. Passer Italiae (Aves) b. Study on the morphogenesis of the ultimobranchial body. Gallus domes* ticus (Aves) MICHON, J. Dr. es Sci. — Lab. de Zool. et Biol, anim., Fac. des Sci., POI- TIERS, Vienne, France a. Neurosecretion et diapause. (Lumbricidae) MIETE, M. Physician, Med.Dr. — Anat.-Embryol. Lab., Fac. of Med., State Univ., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Netherlands a. Development of the stomach. Homo sapiens (Primates) (in collaboration with J. DANKMEIJER) MIFUNE, S. M.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., FUKUO- KA, Japan a. Inductive action of fresh mouse tissues and its modification by various methods. (Amphibia; Mammalia) b. Nature of protein responsible for induction. (Amphibia; Mammalia) MIKAMI, Y. Dr.Phil., Dr.Med., M.I.I.E., Prof. — Dept. of Anat., Mie Pre- fectural Univ. School of Med., TSU, Japan a. Etiology of some congenital anomalies. Mas molossinus albinus (Roden~ tia) b. Developmental mechanism of entodermal organs. c. Experimental analysis of Wolffian lens regeneration. MILAIRE, J. M.D. — Lab. d'Anat. et d'Embryol., Fac. de Med. de l'Univ.. 97 Rue aux Laines, BRUXELLES, Belgique a. Cytochemistry of limb buds. (Vertebrata) b. Chemical predifferentiation of some anlagen during head development (otic vesicle, chondrocranium, eye muscles). Mus norvegicus (Rodentia) c. Cytochemistry of cephalogenesis and of limb buds. Talpa spec. (Insects vora) d. Histochemistry of the development of oligosyndactyly. Mus norvegicus (Rodentia) e. Some histochemical aspects of development. Scylliorrhinus canicula (Selachii) MILIN, R. Dr., Prof. — Inst. d'Histol. et d'Embryol., Fac. de Med., SARA- JEVO, Yougoslavie (no embryological work in progress) MILLARD (BOKENHAM), Mrs. N. A. H. Ph.D. — Dept. of Zool., Univ. of Cape Town, Rondebosch, CAPE TOWN, South Africa (no embryological work in progress) MILLEN, J. W. M.A., M.D., D.Sc — Anat. School, Univ. of Cambridge, CAMBRIDGE, England 93 Mil-Moo MILLER, J. A. Jr. A.B., Ph.D., Sc.D. — Dept. of Anat, Tulane Univ., NEW ORLEANS 18, La., U.S.A. a. Oxygen and reconstitution. Tubularia spec. (Hydroidea) b. Hypothermia and resuscitation from asphyxia neonatorum. Cavia spec, Canis spec, Homo sapiens (Mammalia) (in collaboration with Mrs. F. MILLER (STONE)) MILLER (STONE), Mrs. F. B.A., Ph.D.— Dept. of Anat., Tulane Univ., NEW ORLEANS 18, La., U.S.A. a. Hypothermia and resuscitation from asphyxia neonatorum. Cavia spec, Canis spec, Homo sapiens (Mammalia) (in collaboration with J. A. MILLER Jr.) b. Regeneration and embryology. Tubularia spec. (Hydroidea) MINA, E. Y. M.B., Ch.B., D.A., M.D. — Dept. of Anat., Fac of Med., ALEXANDRIA, Egypt MINELLI, G. Dr.Nat.Sci. — 1st. di Anat. Comp., Via Belmeloro 8, BO- LOGNA (103), Italia a. Nucleic acids during development. (Anura; Aves; Mammalia) b. Histogenesis of the liver. Lampetra spec. (Cyclostomata) c Development of telencephalon. (Aves) MINGANTI, A. Dr., M.I.I.E., Prof. — 1st. di Istol. ed EmbrioL, Univ. di Palermo, Via Archirafi 18, PALERMO, Italia a. Development and cytology of hybrids. (Ascidiae) b. Chemical and physiological investigations on the jelly. (Amphibia) c Androgenetic hybrids. (Ascidiae) MINTZ, Miss B. A.B., M.S., Ph.D., M.I.I.E. — Inst, for Cancer Res., 7701 Burholme Ave., PHILADELPHIA 11, Pa., U.S.A. MITCHISON, J. M. M.A., Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Growth of single cells. Schizosaccharomyces pombe, Saccharomyces cerevisiae (Saccharomycetes) MITCHISON, N. A. M.A., D.Phil. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Transplantation into chicken eggs of turkey haemopoietic and lymphoid elements. Gallus gallus, Meleagris gallipavo (Galliformes, Aves) MIYA, K. Dr.Sc — Inst, of Applied Entomol., Fac. of Agr., Iwate Univ., MORIOKA, Japan a. Embryonic development of gonads. Bombyx mod (Lepidoptera) b. Electron microscope study of embryonic development. Bombyx movi (Lepidoptera) MIYAMORI (YAMAMOTO), Mrs. H. M.Sc — Dept. of Biol., Fac of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a. Hormonal influence on sex differentiation. (Teleostei; Amphibia) MOFFAT, D. B. M.D. — Dept. of Anat., Univ. Coll., Newport, CARDIFF, Wales a. Development of intracranial arteries. b. Development of intra-renal blood vessels, (in collaboration with Miss. J. FOURMAN) MOHRI, H. B.Sc, M.A. — Biol. Inst., Coll. of Gener. Education, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan MOHSEN, Th. Dr. es Sci. — Univ. de Dakkar, DAKKAR, Senegal a. Morphogenese des gonades et du tractus genital. (Teleostei) 94 MOLINARO, M. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Nucleic acids. Different spp. (Ascidiae) MOMENT, G. B. A.B., Ph.D. — Goucher Coll., BALTIMORE 4, Md.. U.S.A. MONESI, V. M.D. — Div. Biol, del C.N.E.N., Sincrotrone, FRASCATI (Roma), Italia a. Development in vitro of embryonic organs. MONNfi, L. Phil. Dr. — Dept. of Parasitol., Statens Veterinarmedic. Anstalt, STOCKHOLM 50, Sweden a. Life cycles and developmental physiology of parasitic forms. (Vermes) MONROY, A. M.D., F.I.I.E., Prof. — 1st. di Anat. Comp., Univ. di Paler- mo, Via Archirafi 22, PALERMO, Italia a. Protein synthesis during development. (Echinoidea) MONTEIRO, W. — Inst, de Biol., Fac. Filosofia, Univ. de Minas Gerais, Caixa Postal 253, BELO HORIZONTE, M.G., Brazil a. Cytophotometric determination of DNA in the nuclei of the liver during larval development and metamorphosis. (Anura) (in collaboration with G. SCHREIBER) b. Cytochemical (DNA, RNA and proteins) and cytometric studies on nuclei and nucleoli during the formation of corneal denticles of tadpoles. (Anura) (in collaboration with N. MELUCCI and G. SCHREIBER) MOOG, Miss F. Ph.D., M.I.I.E., Prof. — Dept. of Zool., Washington Univ., ST. LOUIS 30, Mo., U.S.A. a. Development of enzyme systems in the embryo. Gallus domesticus (Aves), (Mammalia) b. Role of the pituitary-adrenal axis in fetal and juvenile development. (Aves; Mammalia) MOOKERJEE, Mrs. A. M.Sc. — Dept. of Zool., Presidency Coll., Colleqe St., CALCUTTA 12, India a. Radiation effects. Amoeba spec. (Ciliata) (in collaboration with S. MOOKERJEE) MOOKERJEE, S. M.Sc, Ph.D., F.R.M.S., M.I.I.E. — Dept. of Zool., Pres- idency Coll., College St., CALCUTTA 12, India a. Determination and individuation. Hydra spec. (Coelenterata) (in colla- boration with S. SANYAL and A. K. SINHA) b. Physiology of cell-contact. (Porifera) (in collaboration with S. BANER- JEE, B. GANGULY and D. LAHIRI) c. Organ resynthesis in vitro. Bufo spec. (Amphibia) (in collaboration with S. ADHIKARI and Miss B. NURJEHAN) d. Nucleo-cytoplasmic relation. Amoeba spec. (Ciliata) (in collaboration with Mrs. M. G. ALAMELU, J. DUTTA, Miss D. MUKHERJI and L. WAIDYASEKARA) e. Radiation effects. Amoeba spec. (Ciliata) (in collaboration with Mrs. A. MOOKERJEE) MOORE, A. R. Ph.D., Prof . — Hopkins Marine Station, PACIFIC GROVE, Cal., U.S.A. a. On the structure of the pluteus. Allocentrotus fragilis (Echinoidea) b. Hybridization. (Centroidea and Echinoidea) c. Gastrulation in hybrids. Dendraster excentricus (Centroidea), Strongy- locentrotus [ranciscanus (Echinoidea) 95 Moo-Mul MOORE, Mrs. B. CLARK A.B., A.M., Ph.D. — Dept. of Zool., Columbia Univ., Broadway and 116th St., NEW YORK 27, N.Y., U.S.A. a. H3-thymidine incorporation in lethal diploid and androgenetic hybrid embryos. Rana pipiens, R. sylvatica (Anura) b. Incorporation of H3-cytidine and H3-uridine into DNA and RNA of normal and hybrid embryos. Rana pipiens, R. sylvatica (Anura) MOORE, J. A. A.B., M.A., Ph.D., M.I.I.E., Prof. — Dept. of Zool., Colum- bia Univ., Broadway and 116th St., NEW YORK 27, N.Y., U.S.A. a. Transplantation of nuclei. (Anura) b. Development of diploid and haploid racial hybrids. Rana pipiens (Anura) MORGAN, Miss J. A. B.Sc. — Dept. of Zool., Univ. of New England, ARMIDALE 5 N., N.S.W., Australia a. Regeneration and metamorphosis of cerci. Blattella germanica (Dictyop- tera, Insecta) (in collaboration with A. STOCK and A. F. O'FAR- RELL) MORI, H. M.A., Dr.Agr., Prof. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Insecticide action on eggs, larvae and adults. (Insecta) MORI, T. M.D. — Dept. of Embryol., Carnegie Inst, of Washington, 1 1 5 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Histological studies on the effect of chorio-allantoic grafts of homologous adult organs on the hemopoietic organs of the host embryo. Gallus domesticus (Aves) MORI, Y. M.A., Prof. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. On the cause of disappearance of cutaneous melanophores of young animals. Carassius auratus (Teleostei) b. Morphological and chemical studies of pigment formation in various species. (Pisces) MORICARD, R. Dr. en Med., Dr. es Sci. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 111 Rue L. M. Nordmann, PARIS XIII, France MORRILL, J. B. A.B., M.S., Ph.D. — Shanklin Lab. of Biol., Wesleyan Univ., MIDDLETOWN, Conn., U.S.A. a. Effects of metal ions on development. Lymnaea stagnalis, L. palustris (Gastropoda) b. Chemical differentiation of eggs and chemical composition of egg cap- sules. Lymnaea spec. (Gastropoda) c. Aspects of regeneration and differentiation. Tubularia crocea (Hydroi~ dea) MORRIS, I. G. B.Sc, Ph.D. — Agr. Res. Council Unit, of Embryol, Dept. of Zool., Univ. Coll. of North Wales, BANGOR, Caernarvonshire, Wales a. Immunological relations of mother and young. (Mammalia) MOSCONA, A. A. M.Sc, Ph.D., M.I.I.E., Prof. — Dept. of Zool, Univ. of Chicago, CHICAGO 37, 111., U.S.A. a. Studies on histogenetic interaction of cells in the development of experi- mentally constructed cellular systems. b. Molecular requirements of cells in vitro for histotypic differentiation. c. Analysis of developmental metaplasias in embryonic tissues. 96 MOSSMAN, H. W. B.S., M.S., Ph.D., M.I.I.E., Prof. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON 6, Wis, U.S.A. a. Comparative morphology of the fetal membranes and reproductive tracts. (Mammalia) (in collaboration with N. OWERS) MOSZKOWSKA, Mrs. A. Dr. es Sci. — Lab. d'Histophysiol., Coll. de France, 4 Avenue Gordon Bennett, PARIS XVI, France MOTOMURA, I. Drs.Sc, M.I. I.E., Prof. — Lab. of Embryol., Inst, of Biol., Tohoku Univ., SENDAI, Japan MOYER, F. H. Ph.D. — Dept. of Anat., Johns Hopkins Univ. School of Med., 709 Wolfe St., BALTIMORE 5, Md., U.S.A. a. The developmental genetics of melanocyte differentiation studied by electron microscopy. Mus musculus (Rodentia) MOYSE, J. B.Sc. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWANSEA, Glamorganshire, Wales a. Larval development and settlement behaviour. Acasta spongites, Pyrgoma anglicum (Balanidae, Thoracica, Cirripedia) b. Factors affecting liberation of larvae. Balanus balanoides (Balanidae, Thoracica, Cirripedia) MUCHMORE, W. B. Ph.D. — Dept. of Biol, Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER 20, N.Y., U.S.A. a. Development of contractile proteins. (Amphibia) MUIR, A. R. M.B., Ch.B., M.D. — Dept. of Anat, Univ. of Edinburgh, Univ. New Buildings, Teviot Row, EDINBURGH 8, Scotland a. Development of myocardium with special reference to the conducting tissue. Rattus domesticus (Rodentia) b. Electron microscope studies of differentiating mesoderm with special reference to muscular and haemopoetic tissues. Rattus domesticus (Ro- dentia) MUKHERJI, Miss D. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Nucleo-cytoplasmic relationship. Amoeba spec. (Ciliata) (in collabora- tion with Mrs. M. ALAMELU, J. DUTTA, S. MOOKERJEE and L. WAIDYASEKARA) MULHERKAR, Miss L. M.Sc, Ph.D. — Dept. of Zool., Univ. of Poona, POONA 7, India a. Transplantations of embryonic tissues. Gallus spec. (Aves) b. Effects of carcinogenetic substances on the embryo. Calotes versicolor (Lacertilia) c. Chromatographic investigation of amino acids in embryonic and post- embryonic stages of development. Musca domestica (Diptera) MULLER, G. Dr.habil., Prof. — Biol. Inst., Med. Akad., Erich-Weinerstr. 3, MAGDEBURG, Deutsche Demokratische Republik a. Postembryonale Entwicklung des Blutbildes. Lagurus lagurus, Gerbillus pyramidum (Cricetidae, Rodentia) MOLLER, K. E. Dipl.-Biol. — Physiol.-chem. Inst., Martin Luther Univ., Hollystr. 1, HALLE (Saale), Deutsche Demokratische Republik a. Vorkommen proteolytischer Enzyme des tierischen Organismus in der Entwicklung. Rana temporaria (Anura), Gallus domesticus (Aves) MOLLER, M. M.A. — Inst, de Biol., Fac. de Med., Salata, ZAGREB, Yougoslavie 97 Miiller-Ned a. Action of several antimitotics on development. Rattus norvegicus albinus (Rodentia) (in collaboration with N. SKREB) MULNARD, J. G. M.D., M.I.I.E. — Lab. d'Anat. et d'Embryol., Fac. de Med. de l'Univ., 97 Rue aux Laines, BRUXELLES, Belgique a. Appearence of enzymes, mainly phosphatases, in development. (Roden- tia) b. Metachromasia in v i v o in the developing egg, and cytochemical ana- lysis of cytoplasmic granulations in relation to metachromasia. Chaetop- terus spec. (Polychaeta) , Barnea spec. (Mollusca) , Arbacia spec. (Echi- noidea) c. Experimental analysis of development by embryonic tissue culture. (Ro- dentia) d. Analysis of metachromatic inclusions in embryonic cells cultivated i n vitro. Gallus domesticus (Aves) MUN, A. M. B.A., M.S., Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Enhancement of growth of host spleens following chorio-allantoic grafts of homologous tissues. Gallus gallus (Aves) MURAKAMI, U. M.D., D.Med.Sci. — Research Inst, of Environmental Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA, Japan a. Effects of ionizing radiation upon the embryo. Mus musculus (Rodentia) (in collaboration with Y. KAMEYAMA and A. MAJIMA) b. Effects of reduced atmospheric pressures upon the embryo. Mus mus- culus (Rodentia) (in collaboration with Y. KAMEYAMA) c. Action of external agents controlling the manifestation of malformations. Mus musculus (Rodentia) (in collaboration with Y. KAMEYAMA and A. MAJIMA) MURATORI, G. Dr.Med., o.Prof. — 1st. Anat., Univ. di Ferrara, Via Fos- sato di Mortara 66, FERRARA, Italia (no embryological work in progress) MURRAY, Mrs. M. R. M.I.I.E. — Dept. of Anat., Columbia Univ., NEW YORK, N.Y., U.S.A. a. Development of secondary cartilage on membrane bones. Gallus domes- ticus (Aves) MURRAY, P. D. F. B.Sc, M.A., D.Sc, F.I.I.E. — Dept. of Zool., Univ. of New England, ARMIDALE 5 N., N.S.W., Australia MUTH, F. W. Dr. — Entw. physiol. Inst, der Univ., Gyrhofstr. 17, K6LN- Lindenthal, Deutsche Bundesrepublik a. Development of a wing shape mutant. Mitotic counts, effects of tempera- ture, regeneration process and moulting process. Ephestia kiihniella (Lepidoptera) b. Regeneration process and the onset of metamorphosis. Xenopus laevis (Anura) NAAKTGEBOREN, C. Drs. — Zool. Lab. der Univ., Plantage Doklaan 44, AMSTERDAM C, Netherlands a. Development of foetus with regard to birth. (Mammalia) NACE, G. W. A.B., M.A., Ph.D., M.I.I.E. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. a. Serological and electrophoretic study of proteins of the embryo. Rana pipiens (Anura) 98 b. Study of development in the presence of antibodies against embryonic proteins. Rana pipiens (Anura) c. Immuno-histologic analysis of development using fluorescent antibody. Rana pipiens (Anura) NADAMITSU, S. N. D.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, HIROSHIMA, Japan a. In vitro ovulation. Mus musculus (Rodentia) b. Further development of ova in vitro. Mus musculus (Rodentia) NAKAMURA, I. M.D., Prof. — Dept. of Anat., Fukushima Med. Coll., Mikawakita-machi 1, FUKUSHIMA-Shi, Japan a. Analysis of prospective areas and differentiation potencies in the epiblast of the blastoderm. Gallus domesticus (Aves) b. Analysis of developmental mechanism of the alimentary tract. (Amphi- bia) , Homo sapiens (Primates) NAKAMURA, O. D.Sc, M.I.I.E., Prof. — Lab. of Morphol., Osaka Lib. Arts Univ., IKEDA, Osaka Pref., Japan a. Map of presumptive regions and formative movements. Triturus spec, Hynobius spec, Rana spec. (Amphibia) b. Experimental analysis of development of tail. Triturus spec. (Urodela) c Formation of digestive tract. Rana spec, Triturus spec (Amphibia) d. Interaction of germ layers in differentiation and shaping. Triturus spec, Rana spec (Amphibia) NAKANE, T. D.Sc — Biol. Lab., Kyoto Prefectural Univ., Shimogamo, KYOTO, Japan (no embryological work in progress) NAKANO, E. M.A., Dr.Sc, M.I.I.E. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Metabolic analysis of early development. Oryzias latipes (Teleostei) (in collaboration with T. HISHIDA) NAKAYAMA, T. M.B., M.D. — Anat. Inst., Med. Fac, Nihon Univ., No. 30, Ooyaguchi-kamimachi, Itabashi-ku, TOKYO, Japan a. Embryological studies on the venae cordis minimae. Homo sapiens (Pri- mates) b. Researches on the changing courses of the arteries in the fetal period. Homo sapiens (Primates) NARBAITZ, R. M.D. — Inst, de Anat. gener. y Embriol., Fac. de Med., Paraguay 2155, BUENOS AIRES, Argentina a. Sexual differentiation (gonadal genesis). Gallus domesticus (Aves) b. Induced aspermatogenesis. Cauia porcellus (Rodentia) NAYLOR, E. B.Sc, Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Sing- leton Park, SWANSEA, Glamorganshire, Wales a. Determination of asymmetry in development and regeneration of the operculum. Hydroides norvegica (Polychaeta) NEBEL, L. A. Dr.Med. — Dept. of Anat., Hadassah Med. School, Hebrew Univ., P.O. Box 1172, JERUSALEM, Israel a. Effect of external physical factors on early development. Gallus domes- ticus (Aves) b. Effect of certain chemicals on the structure of the endometrium and on implantation. Mus norvegicus albinus, Rattus rattus (Rodentia) NEDVIDEK, J. Dr. — Dept. of Gener. and Exper. Zool., Zool. Inst, of Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia 99 Nedvidek-Nik a. Nucleic acids and subcellular particles in early development. (Amphibia) NEEDHAM, J. Dr., F.R.S., F.I.I.E., Prof. — Gonville & Caius Coll., CAM- BRIDGE, England NEOGY, R. K. Dr. — Chittaranjan Nat. Cancer Res. Center, 37 S. P. MOOKERJEE Road, CALCUTTA 26, India a. Effects of -SH and SH-inhibitors on development. (Amphibia), Gallus spec. (Aves) (in collaboration with S. K. BRAHMA) NEULAT, Miss M. M. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. ' Bernard, LYON, France a. Metabolisme des acides nucleiques au cours de la metamorphose. Droso- phila melanogaster, Bombyx mod, Galleria mellonella (Insecta) NEW, D. A. T. M.A., Ph.D. — Strangeway's Research Lab., Wort's Cause- way, CAMBRIDGE, England a. Morphogenesis of skin in tissue culture. (Aves; Mammalia) b. Development of organ perfusion techniques. (Aves; Mammalia) NEWTH, D. R. B.Sc., Ph.D., M.I.I.E., Prof. — Dept. of Biol, as Applied to Med., Middlesex Hosp. Med. School, Cleveland St., LONDON W. 1, England a. Regeneration of defective organs. (Amphibia) b. Morphogenetic effects of homologous DNA administered to eggs and embryos. Siredon mexicanum, Xenopus spp. (Amphibia) NEYFAKH A. A. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad. of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Nucleo-cytoplasmic interaction in development: the role of the nucleus in biochemical differentiation. Misgurnus fossilis (Teleostei) NIAZI, I. A. B.Sc, M.Sc, Ph.D. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont, Canada a. Histological studies of regeneration. Ammocoetes larvae (Petromyzonti- dae, Cyclostomata) , (Anura) NIEUWKOOP, P. D. Phil.Dr., F.I.I.E., Prof. — Hubrecht Lab., Intern. Embryol. Inst., Janskerkhof 2, UTRECHT, Netherlands a. Analysis of neural competence of the ectoderm with various techniques. Ambystoma mexicanum (Urodela) b. Qualitative and quantitative analysis of the propagation of inductive ac- tions through competent ectoderm, a.o. with time-lapse micro-photogra- phy. Ambystoma mexicanum (Urodela) c. Pattern formation in artificially activated ectoderm. Ambystoma puncta- turn, A. mexicanum, Rana pipiens (Amphibia) NICHOLAS, J. S. Ph.D., F.I.I. E., Prof. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Studies on the egg. Mus norvegicus (Rodentia) b. Determination times of tissues and organs. Mus norvegicus (Rodentia) c. Factors underlying embryonic form. d. Development of nucleic acids in embryos. (Amphibia), Mus norvegicus (Rodentia) e. Development of acid phosphatase. (Amphibia), Mus norvegicus (Roden- tia) f. Centrifugation and transplantation of eggs. Mus norvegicus (Rodentia) g. Culture of eggs and embryos. Mus norvegicus (Rodentia) h. Heteroplastic grafting. Gallus gallus (Aves) (host), Mus norvegicus (Rodentia) (donor) 100 ]. Coelomic studies of differentiation. Mus norvegicus (Rodentia) k. Study of the forces engaged in cleavage. 1. Ultrasound studies on embryos. Mus norvegicus (Rodentia) NICOLET, G. Lie. es Sci. — Lab. d'Embryol. exper., Inst. d'Anat, Fac. de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENEVE, Suisse a. L'action du LiCl sur le developpement. Gallus spec. ( Aves) NIE, C. J. van D.V.Sc. — Veter. Anat. and Embryol. Inst., State Univ., Bekkerstr. 141, UTRECHT, Netherlands — Home-address: Burg. Knopperslaan 24, MEPPEL, Netherlands a. Ontogenetic malformations of the heart. Sus scrofa, Bos taurus (Artio- dactyla) b. Collecting hearts of foetus from mothers, recovered from viruspest, in order to investigate the possible influence on the development of the heart. Sus scrofa (Artiodactyla) MESSING, K. Dr.Med., o.Prof. — Anat. Inst, der Univ., Robert Kochstr. 6, MARBURG/Lahn, Deutsche Bundesrepublik (no embryological work in progress) NIEUWENHUYS, R. Dr. — Netherlands Central Inst, for Brain Research, Mauritskade 59B, AMSTERDAM O., Netherlands a. Ontogenesis of the cerebrum, flower Vertebrata) NIGON, V. Dr. es Sci., Prof. — Lab. de Zool. exper., Fac. des Sci., 16 Quai Claude Bernard, LYON, France a. Metabolisme des acides nucleiques durant la gametogenese et le develop- pement. Parascaris equorum (Nematoda), Drosophila melanogaster (Diptera) , Bombyx mod, Galleria mellonella (Lepidoptera) , Arbacia lixula (Echinoidea) b. Metabolisme du calcium au cours du developpement. Arbacia lixula (Echinoidea) NIIZIMA, M. M.D., Ph.D. — Dept. of Anat., Tokyo Med. & Dental Univ., Yushima 3, Bunkyo-ku, TOKYO, Japan a. Tissue culture studies on metamorphosis. Rana catesbiana (Anuva) b. Tissue culture studies on the development and differentiation of dental tissus. Rattus norvegicus albus, Felis domestica, Homo sapiens (Mam- malia) c. Tissue culture studies on the functional morphology of the hepatic cells. Gallus domesticus (Aves), Homo sapiens (Primates) d. Tissue culture studies on cell differentiation. Gallus domesticus (Aves) NIJENHUIS, E. D. M.Sc. — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands a. Analysis of the phase specificity in the sensitivity of the egg to Li-ions. Limnaea stagnalis (Gastropoda) b. Autoradiographic localization of kations in eggs. Limnaea stagnalis (Gas- tropoda) c. Time course of mitotic processes during early cleavage stages. Limnaea stagnalis (Gastropoda) d. Influence of various factors on mitosis and cleavage. Limnaea stagnalis (Gastropoda) (in collaboration with W. L. M. GEILENKIRCHEN and Chr. P. RAVEN) NIKITINA, Mrs. L. A. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. 101 Nikitina-O'br a. Nuclear transplantation from the gastrula ectoderm, neural plate, eye rudiment and early endoderm. Rana arvalis (Anura) (in collaboration with Miss O. G. STROEVA) NILSSON, S. Med.lic. — Dept. of Anat, Univ. of Goteborg, G6TEBORG SV, Sweden a. Development of the seminal vesicle. Homo sapiens (Primates) NISHIITSUTSUJI— UWO, Mrs. J. D.Sc — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan a. Hormonal mechanism of metamorphosis. Bombyx mori, Luehdorfia japo- nica, Philosamia cynthia ricini (Lepidoptera) (in collaboration with M. ICHIKAWA) NISHIMURA, H. M.D. — Dept. of Anat., Kyoto Univ., Sakyo-ku, KYOTO, Japan a. Various factors which control the action of some teratogenic agents. Mus musculus (Rodentia) b. Developmental variations and deformities in early embryos. Homo sapiens (Primates) c. Relationship between development and ageing. Mus musculus (Rodentia) NISSEN, Th. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kunst- lergasse 16, ZURICH, Schweiz NIU, M. C. Ph.D., M.I.I.E. — Biol. Dept., Temple Univ., PHILADELPHIA 22, Pa., U.S.A. NIWELINSKI, J. M. Ph.D. — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland a. Enzymatic background of the regeneration process. Triturus spec, Xeno- pus laevis (Amphibia) (in collaboration with Miss L. ZAMORSKA) b. jS-glucuronidase activity in transplanted regeneration blastemas. Ambys- toma spec. (Urodela) (in collaboration with Miss L. ZAMORSKA) NOBILI, R. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italia a. Reproduction and cytology. (Ciliata) NOLTE, H. v. d. V. B.Sc. — Dept. of Zool., Fac. of Sci., Univ. of Pretoria. PRETORIA, Republic of South Africa a. An experimental investigation of the influence of epidermal placodes on the development of the cranial nerves. Xenopus laevis (Anura) NONAKA, T. B.M., M.D. — Inst, of Endocrinol., Gunma Univ., Iwagami- cho, MAEBASHI, Japan NONNENMACHER, Miss J. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Etude autoradiographique du metabolisme des acides nucleiques. Caeno- rhabditis elegans (Nematoda) NORBERG, O. V. O.Dr., Prof. — Dept. of Histol., Karolinska Inst., Solna- vagen 1, STOCKHOLM 60, Sweden a. A study of teeth and jaws during the first years of life. Homo sapiens (Primates) NORMAN, C. Ph.D. — Dept. of Biol., W. Virginia Univ., MORGAN- TOWN, V.Va., U.S.A. a. The intracellular distribution of sulfhydryl groups in embryonic, adult and tumorous tissues. Rana pipiens (Anura) b. Effects of pH on the metabolism and fertilizing capacity of spermatozoa cultured in vitro. (Mammalia) 102 c. Effects of light on spermatozoa. (Mammalia) d. Physiology and biochemistry of germ cells. (Mammalia) e. Physiological and biochemical basis of cell senescence. N0RREVANG, A. Mag.Scient. — Inst, of Comp. Anat., Universitetsparken 3. COPENHAGEN 0, Denmark a. Embryology. Armillifer spec. (Linguatulidae) (in collaboration with K. G. WINGSTRAND) NOTARNICOLA, Mrs. L. CIRILLO Dr.Nat.Sci. — 1st. di Anat. Comp., Fac. di Sci., S. Pietro, PERUGIA, Italia a. Correlations between nervous system and limbs. (Anura) b. Limb induction (Amphibia) NOVAK, V. J. A. D.Sc. — Biol. Inst., Czechoslovak Acad, of Sci., Na cvicisti cislo 2, PRAHA 6, Czechoslovakia NOVEL (REROLLE), Mrs. M. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Histogenese du cartilage in vitro et in vivo. Mus musculus (Ro- de ntia) NOWAK, A. Lek.med. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. The influence of estrogens on mitotic regulation. Mus musculus (Ro- de ntia) b. The mitotic regulation in the regenerating tadpole. Xenopus laevis (Anura) NOWAKOWNA, Miss J. M.Ph. — ZakJad Zool. Ogolnej, Inst. Zool., Uniw. we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Poland NOESCH, H. D.Sc, Prof. — Zool. Anstalt der Univ., Rheinsprung 9, BASEL, Schweiz a. Einfluss des Nervensystems auf die Entwicklung anderer Organe. (In- secta) b. Entwicklung der imaginalen Muskeln. (Neuroptera; Lepidopteta) c. Entwicklung des Nervensystems. (Insecta) NUMANOI, H. Ph.D. — Biol. Inst., Coll. of Gener. Education, Univ. of Toyo, 865 Komaba-cho, Meguro-ku, TOKYO, Japan NURJEHAN, Miss B. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Mitotic counts in organ rudiments. Gallus gallus (Aves) b. Organ resynthesis in vitro. Bufo spec. (Amphibia) (in collaboration with S. ADHIKARI and S. MOOKERJEE) NYHOLM, K. G. Fil.Dr. — Zool. Inst., Univ. of Stockholm, 70A Radmans- gatan, STOCKHOLM, Sweden a. Study of the development. (Echinoderidae, Aschelminthes) b. Study of the life-history. ( Rhizopoda monothalamia) OBIKA, M. M.A. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Correlation between pigment formation and pterin derivatives during development. (Amphibia) O'BRIEN, B. R. A. B.Sc, Ph.D. — School of Anat., Univ. of New South Wales, SYDNEY, N.S.W., Australia a. Haemoglobin synthesis and y-Azoguanine inhibition. Gallus domesticus (Aves) b. The presence of haemoglobin within the nucleus of the embryonic eryth- roblast. Gallus domesticus (Aves) 103 O'brien-Ort c. Effect of abnormal RNA on haemoglobin synthesis. Gallus domesticus (Aves) O'BRIEN, J. P. Ph.D. — Dept. of Biol., Marquette Univ., 1217 West Wis- consin Ave., MILWAUKEE 3, Wis., U.S.A. OBRUcNlK, M. MUDr., C.Sc. — Inst, of Histol. and Embryol., Fac. of Med., Palacky Univ., Fierlingerova ul., OLOMOUC, Czechoslovakia (no embryological work in progress) OELHAFEN, F. H. Dipl.Zool. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kiinstlergasse 16, ZURICH, Schweiz O'FARRELL, A. F. B.Sc, ARCS — Dept. of Zool., Univ. of New England, ARMIDALE 5 N, N.S.W., Australia a. Regeneration and the endocrine system. Blattella germanica (Dictyoptera, Insecta) (in collaboration with A. STOCK and Miss J. MORGAN) OGREN, R. E. A.B., M.S., Ph.D. — Dept. of Biol., Dickinson Coll., CAR- LISLE, Pa., U.S.A. a. Embryonic development (maturation, cleavage). Hymenolepis diminuta (Cyclophyllidae, Cestodes) b. Structure and development of hexacanth embryos (oncospheres). Hyme- nolepis diminuta (Cyclophyllidae, Cestodes) c. Differentiation of hooks in oncoblasts of immature embryos. Hymenolepis diminuta (Cyclophyllidae, Cestodes) d. Differentiation and movement of embryonic myoblasts. Hymenolepis diminuta (Cyclophyllidae, Cestodes) OHNO, S. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-Ku, NAGOYA, Japan a. Biochemical analysis of embryonic polysaccharides. Triturus pyrrho- gaster (Urodela) (in collaboration with K. TAKATA, Berkeley) OIKAWA, Miss I. B.Sc. — Fac. of Education, Kochi Univ., KoCHI, Japan OKA, H. Ph.D., M.I. I.E., Prof. — Inst, of Zool., Univ. of Education, Otsuka-Kubo-machi 24, Bunkyo-ku, TOKYO, Japan a. Metamorphosis of compound forms. Perophora japonica (Ascidia) b. Colony-specificity and selective fertilization in compound forms. Botryllus primigenus (Ascidia) (in collaboration with H. WAT AN ABE) c. Regulation in the developing egg. Tachypleus tridentatus (Xiphosura, Merostomata) (in collaboration with K. SEKIGUCHI) OKADA, T. S. M.Sc, D.Sc, M.I.I.E. — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan a. Immunological studies on the synthesis of tissue proteins in embryos. Gallus domesticus (Aves) b. Differentiation of embryonic cells cultured in vitro, with special reference to the uptake of protein or RNA. Triturus pyrrhogaster (Uro- dela), Gallus domesticus (Aves) (in collaboration with K. TAKATA, Berkeley, and T. YAMADA, Oak Ridge) OKADA, Y. K. M.J.A., Dr., F.I. I.E., Prof . — Nat. Museum of Nat. Sci., Ueno-Park, Daito-ku, TOKYO, Japan a. Sex-conversion. (Sparidae, Teleostei) b. Determination of sex-reversible period. Oryzias latipes (Teleostei) OKAZAKI, Miss K. Dr., M.I.I.E. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. Radioautographic study of calcium deposition. Pseudocentrotus depressus, Hemicentrotus pulcherrimus (Echinoidea) 104 b. Study of spicule formation by isolated primary mesenchyme cells. Cly- peaster japonicus, Pseudocentrotus depressus, Hemicentrotus depressus (Echinoidea) OKSCHE, A. Dr.med. — Anat. Inst, der Univ. Kiel, Neue Univ., Eingang Fl, (24b) KIEL, Deutsche Bundesrepublik a. Vergleichende Studien iiber die Entwicklung, cytologische Differenzie- rung, Cytodynamik und Funktion der Epiphyse und des Subcommissural- organs. Potenzen des Neuralrohrepithels und ihre Realisierung. Typische Vertreter aller Klassen (Vertebrata) OLBRICH, E. Dr.med. — Histol.-Embryol. Inst, der Univ., Mullerstr. 59, INNSBRUCK, Tyrol, Oesterreich OLDFIELD, Miss F. E. B.Sc. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Cell behaviour in tissue culture. Gallus domesticus (Aves) OLIVIER, G. H. G. D.M., D.So, Prof. — Lab. d'Anat. fonctionnelle et de Neuro-anat, Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Embryologie et croissance du squelette des membres (en particulier membres inferieurs). Homo sapiens (Primates) (en collaboration avec H. PINEAU) b. Croissance prenatale globale. Homo sapiens (Primates) (en collaboration avec H. PINEAU) OLIVO, O. M. M.I.I.E., Prof. — 1st. di Istol. e Fisiol. gen., Univ. di Bo- logna, Via Belmeloro N. 8, BOLOGNA, Italia OLSSON, R. Fil.Dir. — Zootom. Inst., Univ. of Stockholm, 70A Radmans- gatan, STOCKHOLM, Sweden OPPENHEIMER, Miss J. M. B.A., Ph.D., M.I.I.E. — Dept. of Biol., Bryn Mawr Coll., BRYN MAWR, Pa., U.S.A. a. Development of embryonic shield in vitro. Fundulus heteroclitus (Teleostei) OSTROWSKI, K. Dr.med. — Zaklad Histol. i Embriol., Ak. Med., ul. Chalubinskiego 5, WARSZAWA, Poland O'RAHILLY, R. M.Sc, M.D., Prof. — Dept. of Anat., Coll. of Med., Wayne State Univ., DETROIT 7, Mich., U.S.A. a. Morphogenesis and developmental histochemistry of embryonic eye. Gallus domesticus (Aves) (in collaboration with D. B. MEYER) ORSINI, Mrs. M. C. WARD B.A., Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON 6, Wis., U.S.A. a. Fetal membranes, giant cells, and pregnancy changes in uterine vessels. Mesocricetus auratus (Rodentia) b. Delayed implantation. Mesocricetus auratus (Rodentia) ORTOLANI, Miss G. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Induction processes in embryonic development. (Ascidiae) ORTS LLORCA, F. M.I.I.E., Prof. — Lab. de Anat. y Embryol., Fac. de Med., Ciudad Univ., MADRID, Spain a. Microphthalmie experimentale. Gallus spec. (Aves) b. Production des "retinal septa". Gallus spec. (Aves) c. Determination et differenciation de la placode olfactive. Gallus spec. (Aves) d. Determination et differenciation de la placode auditive. Gallus spec. (Aves) 105 Osa-Per OSANAI, M. M.A., D.Sc. — Biol. Lab., Keio Univ., YOKOHAMA, Hiyoshi, Japan a. Colour changes of larvae in diapause. (Lepidoptera) b. Studies on the pterins and their precursors during postembryonal deve- lopment. (Pieridae, Lepidoptera) O'STEEN, W. K. B.A., M.S., Ph.D. — Dept. of Anat, Med. Branch, Univ. of Texas, GALVESTON, Tex., U.S.A. a. Regeneration of the intestine after transection of gut in one to several sites; reversal of segments; looping of segments. Diemictylus viridescens vivid. (Urodela) b. Regeneration of intestine in larval forms after simple single transections of loops of the coiled intestine, and re-establishment of functional intestine after removal of large percentage of digestive tract; effects on meta- morphosis. Rana clamitans (Anura) c. Radioautographic studies of regeneration (cell renewal) in forelimb and intestine. Diemictylus viridescens (Urodela) OVERTON, Mrs. J. H. Ph.D., M.I.I.E. — Dept. of Zool., Biol. Sci. Div., Univ. of Chicago, CHICAGO, III, U.S.A. a. Cell adhesion in early development. Gallus domesticus (Aves) b. Regeneration in the eye. Xenopus laevis (Anura) (in collaboration with G. FREEMAN) OWERS, N. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON 6, Wis., U.S.A. a. Placentation. (Soricidae; Tupaiidae) b. Development of fetal membranes. (Soricidae, Insectivora) (in collabora- tion with H. W. MOSSMAN) c. Tissue and organ culture of fetal membranes. Sus scrofa ( Artiodactyla) OZEKI, K. O. Dr. Sci. — Biol. Inst., Coll. of Gener. Education, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan a. Hormonal regulation of metamorphosis. Anisolabis maritima (Der- maptera) PACKER, A. D. M.Sc, M.D. — Dept. of Anat. and Histol., Univ. of Ade- laide, ADELAIDE, S. Australia, Australia a. Experimental developmental morphology. (Rodentia) PADYKULA, Miss H. A. B.S., M.A., Ph.D. — Dept. of Anat., Harvard Med. School, 25 Shattuck St., BOSTON 15, Mass., U.S.A. PAI, S. Dr.rer.nat., F.I. I.E. — Lab. of Developm. Physiol., Inst, of Exper. Biol., Acad. Sinica, 320 Yo Yang Road, SHANGHAI, China PANITZ, R. Dipl.-agr. — Inst. f. Kulturpflanzenforsch. der Deutschen Akad. der Wiss. zu Berlin, GATERSLEBEN, Kreis Aschersleben, Deut- sche Demokratische Republik a. Investigations about the effect of ecdysone (hormone of the prothoracic gland) on the physiological activity of specific gene-loci in the salivary gland chromosomes. Acricotopus lucidus (Chironomidae, Diptera) PANTELOURIS, E. M. B.Sc, Ph.D. — Dept. of Zool., Queen's Univ., BELFAST, N. Ireland a. Effects of radiation on foetuses, and means of alleviating them. Mus musculus (Rodentia) PAPACONSTANTINOU, J. B.A., M.A., Ph.D. — Dept. of Microbiol., Johns Hopkins Univ. School of Med., 725 North Wolfe St., BALTI- MORE 5, Md., U.S.A. 106 a. Biochemical and immunochemical studies of lens development. Gallus gallus (Aves) PARK, Miss H. D. Ph.D. — National Inst, of Arthritis and Metabolic Diseases, BETHESDA 14, Md., U.S.A. a. Induction of differentiation of the male gonad. Hydra littoralis (Hydroi- dea) PASCHMA, M. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool., Uniw. we Wrodawiu, ul. Sienkiewicza 21, WROCLAW, Poland PASQUINI, P. Ph.D., F.I.I.E., Prof. — 1st. di Zool. della Univ., Viale Regina Elena 324 (al Policlinico), ROMA, Italia a. Enzymes and embryonic development. (Amphibia) (in collaboration with D. PETRUCCI) b. Growth and differentiation in regeneration. Hydra spec. (Hydroidea) , Planaria spec. (Turbellatia) (in collaboration with D. PETRUCCI) PASTEELS, J. J. M.D., F.I.I.E., Prof. — Lab. d'Anat. et d'Embryol., Fac. de Med. de l'Univ., 97 Rue aux Laines, BRUXELLES, Belgique a. Study of metachromatic granules in eggs in vivo. Barnea spec. (Mollusca Bivalva) b. Electron-microscopical analysis of egg structure. Barnea spec. (Mollusca Bivalva) PATANfi, L. Dr. Nat. Sci. — 1st. di Zool. dell'Universita di Catania, Via Androne 25, CATANIA, Italia a. Rigenerazione. Porcellio laevis (Oniscoidea, Isopoda) PATERSON, Miss M. C. B.A., M.S., Ph.D. — Dept. of Zool., Vassar Coll., POUGHKEEPSIE, N.Y., U.S.A. PATRICOLO, Miss E. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Enzymatic inhibitors in development. (Ascidiae) PATTEN, B. M. Ph.D., M.I.I.E., Prof. — Dept. of Anat., Med. School, Univ. of Michigan, 2500 East Med. Bldg., ANN ARBOR, Mich., U.S.A. a. Arnold-Chiari malformation. Homo sapiens (Primates) b. Persistent interatrial foramen primum. Homo sapiens (Primates) PAVANELLI, Miss C. Dr. Nat. Sci. — 1st. di Anat. Comp., Via Belmeloro 8, BOLOGNA (103), Italia a. Nucleic acids and phosphorus in development. (Anura; Aves) (in colla- boration with Miss M. R. ROSSI) PEDERSEN, K. J. M.Sc. — Inst, for Aim. Zool., Universitetsparken 3, CO- PENHAGEN 0, Denmark PEHRSON, G. T. Dr. Phil., Prof. (Emer.) —Zool. Inst., Univ. of Stock- holm, Radmansgatan 70A, STOCKHOLM, Sweden a. Development and morphology of the skull and of the lateralis system. (Teleostei) PENZLIN, H. Dr.rer.nat. — Zool. Inst, der Univ. Rostock, Stalinplatz, ROSTOCK, Deutsche Demokratische Republik a. Physiologie der Regeneration. Cordylophora caspia (Hydrozoa) b. Physiologie und Histologic der Regeneration. Blattella spec. Periplaneta spec. (Orthoptera) PERA, L. M.D. — Inst, of Anat. and Histoembryol., Univ. of Pisa, Via Roma 33, PISA, Italy a. Comparative studies on the sympathetic nervous system. (Reptilia; Aves) b. Comparative research on the cloaca. (Pisces; Reptilia; Aves) 107 Per-Pik PERDRIX, Miss S. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bei> nard, LYON, France a. Etude autoradiographique du metabolisme des acides nucleiques au cours de l'ovogenese. Drosophila melanogaster (Dipteta) b. Etude autoradiographique du metabolisme des acides nucleiques durant le developpement embryonnaire. Arbacia lixula ( Echinoidea) PERKOWSKA, Mrs. E. MOSER Dr. — Dept. of Cytol., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a. Some biochemical characteristics of embryonic mitochondria. Rattus spec. (Rodentia) PERLES, B. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Oreille interne. Homo sapiens (Primates) PERLMANN, H. P. Ph.D., M.I.I.E. — Wenner-Gren's Inst, for exper. Biol., Norrtullsgatan 16, STOCKHOLM Va., Sweden a. Serological study of proteins during early development. Paracentrotus lividus (Echinoidea) (in collaboration with Mrs. J. C. KALTENBACH, South Hadley, Mass., U.S.A.) PERRAYON, R. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Evolution de caracteres physiologiques au cours du developpement. Acanthoscelides obsoletus (Coleoptera) PERRENOT, Miss M. Lie. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Differentiation du complexe surrenalien et eveil des correlations hypo- physo-surrenaliennes. Gallus spec, Anas spec. (Aves) f PERRI, T. Dott., M.I.I.E., Prof. — 1st. di Anat. Comp., Fac. di Sci., S. Pietro, PERUGIA, Italia (deceased) PERRY, Miss M. M. B.Sc. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Developmental effects of metabolic antagonists. (Evertebrata; Vertebrata) (in collaboration with C. H. WADDINGTON) b. Electron microscope studies of gene action, (in collaboration with C. H. WADDINGTON) c. Study of certain features of developing embryos using electronmicro- graphs. (Diptera; Amphibia) (in collaboration with G. G. SELMAN and C. H. WADDINGTON) d. Differentiation of the reticulocyte. Homo sapiens (Primates) (in colla- boration with Mrs. R. M. CLAYTON (FREEDMAN) and K. B. ROBERTS) PERTUSA, J. Lic.Sc, Dr.Ph. — Dept. of Anat. and Embryol., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Studies on morphogenetic movements in the blastoderm. Gallus domestic cus (Aves) PETERS, A. B.Sc, Ph.D. — Dept. of Anat., Univ. of Edinburgh, Univ. New Buildings, Teviot Row, EDINBURGH 8, Scotland a. Electron microscope study of Schwann cell — axon relationship in deve- loping nerves. Xenopus laevis (Anura) 108 PETERS, Th. Dr.Med. — Anat. Inst, der Univ., Robert Kochstr. 6, MAR- BURG/Lahn, Deutsche Bundesrepublik a. Die Wirkung von Rontgenstrahlen auf befruchtete Eizellen und junge Keimstadien, unter besonderer Berucksichtigung der Wirkung kleiner Strahlendosen und geringer Schaden. Triturus alpestris (Urodela) PETROVIC, A. Dr.Med., Dr. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Differenciation hypophysaire et fonctionnement hypophysaire en culture in vitro et en greffe. (Mammalia) PETRUCCI, D. — 1st. di Zool. della Univ., Viale Regina Elena 324 (al Policlinico), ROMA, Italia a. Enzymes and embryonic development. (Amphibia) (in collaboration with P. PASQUINI) b. Growth and differentiation in regeneration. Hydra spec. (Hydroidea), Planaria spec. (Turbellaria) (in collaboration with P. PASQUINI) c. Endogeneous respiration of oocytes. (Amphibia) PETRY, G. Dr.Med., Prof. — Anat. Inst, der Univ., Robert Kochstr. 6, MARBURG/Lahn, Deutsche Bundesrepublik a. Funktionelle Histologie der Eihaute. (Reptilia; Aves; Mammalia) PFLUGFELDER, O. Dr.rer.nat., Prof. — Zool. Inst, der Landwirtschaftl. Hochschule, STUTTGART-Hohenheim, Deutsche Bundesrepublik a. Anderung des Stoffwechsels nach Stoning des hormonalen Gleichge- wichts. (lnsecta) b. Einfluss der Pinealektomie auf die Postembryonalentwicklung. Lebistes reticulatus (Teleostei), (Amphibia, Sauropsida) c. Histophysiologie der Corpora cardiaca (EJektronenmikroskopisch). (ln- secta) d. Entwicklung. (Acari, Arachnoidea) e. Wirkungsmechanismen von Thyreostatika. Rana temporaria, Xenopus laevis (Anura) , Gallus domesticus (Aves) PIATT, J. A.B., M.A., Ph.D., M.I.I.E.— Dept. of Anat., School of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa., U.S.A. PIEPHO, H. Dr.Phil., Prof. — Zool. Inst, der Univ., Berlinerstr. 28, G6T- TINGEN, Deutsche Bundesrepublik PIERRO, L. J. B.S., M.S., Ph.D. — Dept of Animal Genetics, Storrs Agric. Exp. Station, Univ. of Connecticut, STORRS, Conn., U.S.A. a. Teratogenic action of actinomycin D on developing embryos. Gallus domesticus (Aves) b. Gene interaction in the control of formation of specific melanin granules. Mus musculus (Rodentia) c. Eye development. Mus musculus (Rodentia) PIETRZYK (WALKNOWSKA), Mrs. J. M.Sc. — Dept. of Exper. Zool, Polish Acad, of Sci., ul. Kopernika 7, KRAKOW, Poland a. Congenital malformations in relation to karyology. Mesocricetus auratus (Mammalia) (in collaboration with Miss M. A. JORDAN) PIK6, L. Ing. Agr., D.V.M. — Dept. of Embryol., Div. of Biol., California Inst, of Technol., PASADENA 4, Cal., U.S.A. a. Physiology and cytology of fertilization. Polyspermy. Polyploidy. Rattus norvegicus (Rodentia) 109 Pil-Pra PILLERI, G. Dr.med. — Hirnanat. Inst, der Psychiatr. Univ. Klinik, Med. Fak., Bolligenstr. 117, Waldau, BERN, Schweiz a. Entwicklung des Gehirns. Castor canadensis (Rodentia) b. Uber die Protuberantia sclerae am embryonalen Auge. Homo sapiens (Primates) PIMPINELLI, G. Dr. — 1st. di Biol, gen., Fondazione Agraria, S. Pietro, PERUGIA, Italia a. Catalasi nello sviluppo. ( Echinodermata) PINEAU, H. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Embryologie et croissance du squelette des membres (en particulier membres inferieures). Homo sapiens (Primates) (en collaboration avec G. H. G. OLIVIER) b. Croissance prenatale globale. Homo sapiens (Primates) (en collaboration avec G. H. G. OLIVIER) PINOT, Miss M. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 11 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Etude de la croissance et de la differenciation du bourgeon de membre in vitro. Gallus gallus (Aves) PIRIA, F. — Cattedra di Istol. ed Embriol. gener., Fac. di Med. e Chir. dell' Univ. di Milano, Via Ponzio 7, MILANO, Italia a. Histochemical observations and paper electrophoresis on the ground substance of the umbilical cord. Homo sapiens (Primates) PLESNER, P. M.D. — Biol. Inst, of the Carlsberg Foundation, 16 Tagens- vej, COPENHAGEN N, Denmark a. Studies on the biochemistry and physiology of synchronized cell systems. Tetrahymena pyriformis (Holotricha, Ciliata) (in collaboration with K. HAMBURGER and E. ZEUTHEN) PLETZEN, R. van D.Sc. — Dept. of Zool., Univ. of O.F.S., BLOEM- FONTEIN, Republic of South Africa (no embryological work in progress) PLUTA, E. Mgr. — Chair of Gener. Biol., Silesian Acad, of Med., Rokit- nica, ZABRZE 8, Poland a. Regeneration of the thyroid gland after experimental injury. Cavia cobaya (Rodentia) b. Physiological restoration of the thyroid gland. Cavia cobaya (Rodentia) POHLEY, H.-J. Dr. — Inst, fur Entwicklungsphysiol., Univ. zu Koln, Gyr- hofstr. 17, KoLN-Lindenthal, Deutsche Bundesrepublik a. Entwicklung der Flugel. Regeneration und Super-regeneration der Flii- gelanlagen. Einwirkung der regenerierenden Anlagen auf den Zeitpunkt der Puppenhautung. Ephestia kuhniella (Lepidoptera) b. Einfluss der Antennenlange auf die Dauer der Larvenstadien und den Obergang zum Imaginalstadium. Periplaneta americana (Orthoptera) POLEZHAEV. L. V. Dr. Biol. Sci., F. I. I. E.. Prof. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOS- COW V-71, U.S.S.R. a. Regeneration of cranium bones. Mus domesticus, Rattus norvegicus, Oryctolagus cuniculus, Felis domestica, Canis familiaris (Mammalia) 110 b. Regenerative capacity and immunity in ontogenesis. Rana temporaria. Bombina bombina (Anura) c. Regeneration of brain. Felis domestica, Canis [amiliaris, Rattus norve- gicus (Mammalia) d. Regeneration of myocardium. Rattus norvegicus, Oryctolagus cuniculus, Felis domestica (Mammalia) e. Regeneration of dental tissue. Canis [amiliaris (Carnivora) f. Restoration of regeneration capacity of limbs after X-irradiation. Am- bystoma mexicanum (Urodela) POPOV, V. V. Dr., Prof. — Dept. of Embryol, Fac. of Biol., Moscow Univ., MOSCOW 234, U.S.S.R. a. Developmental physiology of the sense organs, and the significance of irritability for the evolution of morphogenesis. b. Significance of the morphogenetic properties of the layers of the retina for the development of the dioptric system of the eye. POPP, R. A. Ph.D. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. PORTMANN, A. Dr.Phil., Prof. — Zool. Anstalt der Univ., Rheinsprunq 9 BASEL, Schweiz a. Embryology and postembryonic development. ( Vettebrata) b. Embryology of the forebrain (including postembryonic stages). (Aves; Mammalia) c. Embryology of blood formation. (Aves) d. Development of skin pattern. (Reptilia) e. Development. (Opisthobranchia, Gastropoda) f. General embryology. Octopus spec, Eledone spec. (Cephalopoda) POULSON, D. F. B.S., Ph.D., M.I.I.E., Prof. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Mid-gut: genesis and differentiation. Drosophila melanogaster (Diptera) b. Chromosomal control of differentiation. Drosophila melanogaster (Dipte- ra) c. Neurogenesis in normal and genetically deficient embryos. Drosophila melanogaster (Diptera) d. Maternally inherited sex-ratio disturbances of development. Drosophila bifasciata, D. melanogaster, D. willistoni (Diptera) e. Developmental genetics. Drosophila nebulosa (Diptera) POURREAU (SCHNEIDER), Mrs. N. M. B.A., Dr. de l'Univ. de Paris — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Culture in vitro of adult chick organs as a medium for the proli- feration of cancers from another species. b. In vitro studies on hematopo'iesis in embryonic and adult spleens. (Aves; Mammalia) POURTOIS, M. M.D., Lie. en Sci. dent. — Lab. d'Anat. et d'Embryol., Fac. de Med. de l'Univ., 97 Rue aux Laines, BRUXELLES, Belgique a. Cytochimie des ebauches dentaires. Mus musculus (Rodentia) PRASAD, M. R. N. M.Sc, Ph.D. — Dept. of Zool., Univ. of Delhi, DELHI 6, India a. Reproductive cycles. Tatera indica cuvierii (Cricetinae, Rodentia) 111 Prasad*Rap b. Delayed implantation studies. Cricetus auratus, Rattus spec. (Rodentia) c. Morphogenesis of the foetal membranes. Scalopus aquaticus, Parasca- lops breweri, Scapanus townsendi (Insectivota) , Tatera indica cuvierii (Cricetinae, Rodentia) d. Morphogenesis and cytochemistry of foetal membranes. Funambulus spec. (Rodentia) e. Physiology of reproduction. Hemidactylus spec. (Lacertilia), Funambulus spec. (Rodentia) PRAY, T. R. B.A., Ph.D. — Dept. of Biol., Univ. of Southern California. LOS ANGELES 7, Cal., U.S.A. a. Development of gametophytes under uniform conditions. (Cheilantheae, Pteridaceae) b. Development of juvenile sporophytes. (Cheilantheae, Pteridaceae) c. Ontogeny of leaves with particular emphasis on development of venation systems from comparative viewpoint. Regnellidium spec, Pellaea spec, Onoclea spec, Acrostichum spec. (Pterydophyta) PREDA, V. Prof. — Catedra de Biol., Inst. Medico-Farmaceutic, Str. Pas- teur 6, CLUJ, Rumania a. Influence de la temperature d'incubation sur le metabolisme de l'oeuf. Gallus spec. (Aves) b. Influence du systeme nerveux central sur le metabolisme de l'oeuf. Gallus spec (Aves) c Influence de la lumiere permanente et de l'ionisation sur le metabolisme de l'oeuf. Gallus spec (Aves) d. Influence des transfusions de sang heterospecifiques sur la differencia- tion sexuelle de lembryon. Gallus spec. (Aves) e. Changement du sexe par l'hormone gonadotrope chorial. Zea mais PRESCOTT, D. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. a. Nuclear RNA synthesis in embryonic induction and regeneration. Tritu~ rus spec (Utodela) (in collaboration with T. YAM AD A and S. KARA- SAKI) PRETO PARVIS, Mrs. V. Dott.Med., Prof. — Cattedra di Istol. ed Embriol. gener., Fac di Med. e Chir. dell'Univ. di Milano, Via Ponzio 7, MILANO, Italia a. Histochemical studies of osteogenesis (lipids and aminopolysaccharides). Felis domestica (Carnivora) b. Morphological and histochemical studies of histogenesis of mucous and chondroid tissues. Mucous tissue of the embryo (gelatina cardiaca) and of the valves of the heart. Gallus domesticus (Aves) c Quantitative study about the pre- and postnatal increase of cerebellar cortex and of its different strata. Felis domestica, Cavia cobaya, Rattus norvegicus (Mammalia) d. Histochemical studies of histogenesis of "sex-skin ". Cornopithecus ama- dryas (Primates) PRICE, Miss D. M.I. I.E., Prof. — Dept. of Zool., Biol. Sci. Div., Univ. of Chicago, CHICAGO 37, 111., U.S.A. PUCCI, Miss I. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. Ultrastructure of eggs. (Mollusca) PUCCINELLI, I. Dr. Nat. Sci. '— 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italia 112 a. Development and cytology. (Tricladidea, Turbellaria) QUEREUX, P. Dr. en Med. — Lab. d'Anat. fonctionnelle et de Neuro-anat, Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Developpement de la cavite peritoneale. Homo sapiens (Primates) QUERNER, H. Dr.rer.nat. — Inst, fur exp. Krebsforsch. der Univ. Heidel- berg, Voss-Str. 3, HEIDELBERG, Deutsche Bundesrepublik a. Hormonphysiologische Untersuchungen. (Cyprinodontidae, Teleostei) b. Einfluss von Bestrahlung auf Entwicklung und Wachstum. (Ophryo- trocha, Annelida) RADECKA, Mrs. E. ERDMAN M.Ph. — ZaMad Zool. Ogolnej, Inst. Zool., Uniw. we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Poland RAFFERTY, K. A., Jr. B.S., M.S., Ph.D. — Dept. of Anat., School of Med., Johns Hopkins Univ., 709 N. Wolfe St., BALTIMORE 5, Md., U.S.A. RAGOZINA, Mrs. M. N. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. The influence of ecological factors on the mode of development of pro- visory organs. Lacerta spp., Gecko spp., Agama spp., Testudo spp., Clemmys spp. (Reptilia), (Aves nidifugi et nidicoli) RAMENSKAJA, Mrs. G. P. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Action of DNA on morphogenesis. Bombyx mori (Lepidoptera) (in col- laboration with Mrs. T. A. BEDNJAKOVA) RAMSEY, Miss E. M. A.B., M.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Placentation. Study of marginal sinus and venous drainage of placenta. Macaca mulatta, Homo sapiens (Primates) b. Anatomical and radiological studies of circulation in the maternal pla- centa. Macaca mulatta, Homo sapiens (Primates) (in collaboration with G. W. CORNER, Jr. and M. W. DONNER) c. Determinations of blood, amniotic and intervillous space pressures throughout pregnancy. Macaca mulatta (Primates) (in collaboration with G. W. CORNER, Jr. and W. N. LONG) RANZI, S. Ph.D., F.I.I.E., Prof . — 1st. di Zool. e Anat. Comp., Univ. di Milano, Via Celoria 10, MILANO, Italia RANZOLI, F. Dr., Prof. — 1st. di Zool., Via S. Giacomo 9, BOLOGNA, Italia a. Development of gonads. (Urodela) b. Sexual and asexual reproductive cycles and regeneration. Salmacina in- crustans, S. dysteri (Polychaeta) c. Sex determination and intersexuality. Hydroides norvegica (Polychaeta) RAO, S. R. V. M.Sc, Ph.D. — Dept. of Zool., Univ. of Delhi, DELHI 6, India a. Cytology and cytochemistry of development. Pyura spec. (Ptychobran- chia, Ascidia) RAPOLA, M. H. J. M.D. — Anat. Inst., Univ. of Helsinki, HELSINKI, Finland a. Development of the anterior pituitary and adrenocortical tissue. Xenopus laevis (Anura) 113 Rap-Rey RAPPAPORT, R., Jr. B.S., M.S., Ph.D. — Dept. of Biol., Union Coll., SCHENECTADY 8, N.Y., U.S.A. a. Role of water in growth and morphogenesis. Rana pipiens (Anura) b. Early embryology. Marinogammarus obtusatus (Gammaridae, Crusta- cea) c Comparative micrurgical studies of cytokinesis. Extending present meth- ods to a variety of experimental material and devising new forms of physical experimentation. Marinogammarus obtusatus (Gammaridae, Crustacea) , Echinarachnius parma (Echinoidea) , Rana pipiens (Anura) RASMOND, R. Dr. — Lab. de Zool. syst. et de Biol, anim., Fac. des Sci., Inst. Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt, BRUXELLES, Belgique a. Facteurs de croissance et de gemmulation. Ephydatia Mulleri, E. fluvia- tilis, Spongilla lacustris (Spongillidae, Porifera) RASMUSSEN, L. cand. mag. — Biol. Inst, of the Carlsberg Foundation, 16 Tagensvej, COPENHAGEN N, Denmark a. Studies on growth and division in pure cultures. Acanthamoeba spec. (Amoebidae) (in collaboration with E. ZEUTHEN) RAUNICH, L. Ph.D., M.D., M.I.I.E., Prof. — 1st. di Anat. Comp., Univ. di Ferrara, Via delle Scienze 17, FERRARA, Italia a. Development of blood and vascular system. Petromyzon spec. (Cyclosto- mata), Amia spec, Lepidosteus spec. (Holostei), Salmo spec. (Teleostei) b. Determination of neural plate. Triton spec, Ambystoma spec. (Urodela) c Neural crest development. (Amphibia) d. Action of carcinogenic hydrocarbons. (Amphibia) e. Steroids during development (chemical detection). (Amphibia) RAVEN, Chr. P. Dr.Sc, F.I.I.E., F.R.A., Prof . — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands a. Influence of various kations on development. Limnaea stagnalis (Gastro- poda) (in collaboration with W. L. M. GEILENKIRCHEN) b. Maturation divisions of eggs. Various spp. (Gastropoda) c Influence of various factors on mitosis and cleavage. Limnaea stagnalis (Gastropoda) (in collaboration with W. L. M. GEILENKIRCHEN and E. D. NIJENHUIS) d. Influence of various alcohols on development. Limnaea stagnalis (Gas- tropoda) e. Influence of centrifuging on development. Limnaea stagnalis (Gastropoda) f. Cytochemistry of RNA in early development. Limnaea stagnalis (Gas- tropoda) g. Cell-lineage and head pattern in heat-shock treated embryos. Limnaea stagnalis (Gastropoda) (in collaboration with N. H. VERDONK) h. Cytochemistry of oogenesis. Limnaea stagnalis (Gastropoda) (in colla- boration with Miss G. A. UBBELS) i. Application of information theory to oogenesis and embryonic develop- ment. RAWLES, Miss M. E. Ph.D., M.I.I.E. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Development of the skin and its derivatives. Gallus gallus (Aves) RAWLS, J. M. B.S., M.A., Ph.D. — Dept. of Biol., Austin Peay State Coll., CLARKSVILLE, Tenn., U.S.A. 114 a. Sperm enzyme activity. Mellita quinquiesperforata (Clypeastroidea. Echinoidea) RAYNAUD, A. Dr. es Sci.( M.I. I.E. — Lab. de l'lnst. Pasteur, Quartier des Vieux Moulins, SANNOIS (S. 5 O.), France a. Etude du developpement normal du tractus genital chez l'embryon. Anguis fragilis (Lacertilia) b. Effets de la destruction au moyen des rayons X, des ebauches hypo- physaires. Anguis fragilis (Lacertilia) c. Etude de l'orientation de 1'axe de symetrie embryonnaire et des rapports existant entre cette orientation et la rotation des oeufs dans l'uterus. Anguis fragilis (Lacertilia) REAMS, W. M., Jr. B.S., Ph.D. — Dept. of Zool., Louisiana State Univ., BATON ROUGE 3, La., U.S.A. RECOURT, A. M.Sc. — Centrum voor Electronenmicroscopie, Janskerkhof 3, UTRECHT, Netherlands REGGI, L. M. de — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Variations morphologiques et physiologiques dans la developpement, sous Taction de divers facteurs. (Phytophthires, Rhynchota) REGONDAUD, J. Lie. es Sci. — Lab. de Zool. et Biol, anim., Fac. des Sci., POITIERS, Vienne, France a. Developpement de l'appareil genital. (Pulmonata, Gastropoda) b. Evolution de la cavite palleale. (Pulmonata, Gastropoda) RENGEL, S. L. Dr.Med., Prof. — Dept. of Anat., Fac. de Ci.Med., Univer- sidad de Los Andes, MfiRIDA, Venezuela REVERBERI, G. Dr., F.I.I.E., Prof. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia a. The role of some enzymes in embryonic development. (Marine Everte- brata) REYER, R. W. B.A., M.A., Ph.D., M.I.I.E. — Dept. of Microanat., School of Med., Med. Center, W. Virginia Univ., MORGANTOWN, W. Va., U.S.A. a. An experimental analysis of Jens regeneration: a study of the causal mechanisms involved in lens regeneration from the dorsal iris and their relation to the processes of lens induction in the embryo. Triturus virides~ cens, Amby stoma punctatum (Urodela) (in collaboration with L. S. STONE, New Haven, Conn.) b. A study of the coordinate induction systems operating in the develop- ment of the embryonic lens. Triturus viridescens, Ambystoma punctatum, A. mexicanum (Urodela) REYNOLDS, S. R. M. A.B., M.A., Ph.D., D.Sc. (hon.), Dr. hon. causa (Univ. Catol. de Chile), Prof. hon. causa (Fac. de Med., Montevideo) — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. a. Fetal vascular physiology. Homo sapiens, Lepus spec, Ovis spec. (Mam- malia) b. Uterine contraction patterns. Homo sapiens (Primates) c. Pulmonary vasculature, fetal and neonatal condition. Cavia spec. (Ro~ dentia), Ovis spec. (Artiodactyla) d. Architecture of umbilical blood vessels, distended and nondistended. Homo sapiens (Primates) 115 Reynolds-Roo e. Development of chemoreceptor function. Ovis spec. (Artiodactyla) f. Sensory input and homeostasis related to fetal adaptation to intrauterine environment. Ovis spec. (Artiodactyla) REYSS-BRION (DUCREAU), Mrs. M. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Influence des rayons X sur le developpement embryonnaire. Pleurodeles Waltlii (Urodela), Gallus spec. (Aves) b. Influence des rayons X sur le pouvoir inducteur de la gastrula. Pleuro- deles Waltlii (Urodela) RICHTER, K. M. Prof. — Dept. of Anat., School of Med., Univ. of Okla- homa, 801 N.E., 13th St., OKLAHOMA City, Okla., U.S.A. a. Experimental organogenesis and regeneration of adult organs in culture. Sadarida mexicana (Chiroptera) b. Studies on the development of young ova. Homo sapiens (Primates) RICKENBACHER, J. Dr. — Anat. Inst, der Univ., Gloriastr. 19, ZURICH 7, Schweiz a. Viruswirkung auf Embryonen unter Heranziehung der Explantations- methode mit ganzen Organen. (Vertebrata) , Homo sapiens (Primates) (in Zusammenarbeit mit G. T5NDURY, K. THEILER und W. KOCHER) b. Experimentell-genetische Untersuchungen iiber die Entwicklung der Wirbelsaule. Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, K. THEILER und W. KOCHER) c. Experimentell-genetische Untersuchungen verschiedener Mutanten mit Schwerhorigkeit verschiedener Grade. Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, K. THEILER und W. KOCHER) d. Untersuchungen iiber den Einfluss radiogenetischer Substanzen auf die Differenzierung der Extremitatenanlagen. Gallus domesticus (Aves), Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, K. THEILER und W. KOCHER) RIECK, A. F. B.S., M.S., Ph.D. — Dept. of Physiol., Marquette Univ., 561 N. 15th St., MILWAUKEE 3, Wis., U.S.A. RINALDINI, L. M. Ph.D. — Inst, de Biol. Celular, Univ. Nac. de Cordoba, Casilla de Correo 362, CORDOBA, Argentina a. Synthesis of amino acids in the early embryo. Gallus spec. (Aves) b. Mechanism of ascorbic acid synthesis in the embryo. Gallus spec. (Aves) ROBERTS, K. B. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Differentiation of the reticulocyte. Homo sapiens (Primates) (in colla- boration with Mrs. R. M. CLAYTON (FREEDMAN) and Miss M. M. PERRY) ROBERTS (MONTGOMERY), Mrs. C. B.Sc, M.Sc, Ph.D. — Dept. of Pharmacol., School of Med., Univ. of Southern California, LOS ANGE- LES, Cal., U.S.A. a. Studies on isolated (trypsinized) embryonic cardiac cells in tissue culture. 1. Metabolism and morphological differentiation. 2. Histochemistry of de- veloping enzyme systems. 3. Development of electrical activity. Gallus domesticus (Aves), Mus musculus (Rodentia) 116 ROBERTSON, G. G. B.A., B.Sc, Ph.D., Prof. — Div. of Anat., Med. Units, Fac. of Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. a. Virus-induced abnormalities in embryos. Gallus domesticus (Aves) ROCKSTEIN, M. A.B., M.A., Ph.D. — New York Univ. Med. Center, 550 First Ave., NEW YORK 16, N.Y., U.S.A. a. Physiological basis of aging, growth and metamorphosis. Musca domes- tica (Diptera) b. Metachemogenesis — post-emergence biochemical maturation. (Holo- metabola, Insecta) c. Hereditary vs. environmental factors in longevity. (Diptera; Hyme- noptera) RODRIGUEZ (GALINDO), Mrs. M. — Lab. d'Hormonol. et de Cytol. Exper., Ecole pratique des Hautes Etudes, Hopital Broca, 1 1 1 Rue L. M. Nordmann, PARIS VIII, France ROGUSKI, H. F. M.So — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland a. Properties of regeneration blastemal cells. Ambystoma mexicanum, Sala- mandra salamandra (Urodela) (in collaboration with S. SKOWRON) ROLLHAUSER, H. Dr.med., Prof. — Anat. Inst., Friedrichstr. 24, GIES- SEN, Deutsche Bundesrepublik (no embryological work in proqress) ROLLHAUSER (TER HORST), Mrs. J. O. B. Dr.rer.nat. — Anat. Inst., Friedrichstr. 24, GIESSEN, Deutsche Bundesrepublik (no embryological work in progress) ROMANOFF, A. L. B.S., M.S., Ph.D., Prof. (Emer.) — Lab. of Chem. Embryol., Cornell Univ., c/o Rice Hall 105, ITHACA, N.Y., U.S.A. a. Physiological embryology. (Aves) ROMANOVSKY, A. RNDr., C.Sc. — Dept. of Gener. and Exper. Zool., Zool. Inst, of Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a. Immunoembryology of hybridization and parabiosis. (Amphibia) b. Nucleus and cytoplasm in embryonic development (hybridization, hetero- ploidy). (Urodela) ROMIJN, C. Dr., Prof. — Lab. for Veter. Physiol., State Univ., Alexander Numankade 93, UTRECHT, Netherlands a. Investigations on the respiratory metabolism and heat regulation in the embryo. Gallus domesticus (Aves) b. The role of the allantoic circulation in the heat elimination of the embryo. Gallus domesticus (Aves) c. Direct and indirect calorimetry of the growing embryo. Gallus domesticus (Aves) RONCORONI, G. Dott.Med. — Cattedra di Istol. ed Embriol. gener., Fac. di Med. e Chir. dell'Univ. di Milano, Via Ponzio 7, MILANO, Italia a. Studies of embryonic lipids with freeze-drying and carbowax-embedding. (Mammalia) b. Studies of embryonic glycogen with electron-microscopy. (Mammalia) ROOFE, P. G. Ph.D., Prof. — Dept. of Anat., Med. School, Univ. of Kan- sas, LAWRENCE, Kansas, U.S.A. a. Cytochemical and microchemical study of the developing nervous system and its relationship to developing behaviour patterns. Ambystoma macu- latum (Urodela) 117 Roo-Run ROOSEN-RUNGE, E. C. M.D. — Dept. of Anat., School of Med., Univ. of Washington, SEATTLE 5, Wash., U.S.A. a. Comparative embryology of male reproductive organs. (Invertebrata), Rattus spec, Homo sapiens (Mammalia) ROSE, S. M. Ph.D., M.I.I.E., Prof. — Dept. of Anat., Tulane Univ., NEW ORLEANS 18, La., U.S.A. ROSS, Miss J. R. W. B.Sc, M.B., Ch.B. — Dept. of Anat., Charing Cross Hosp. Med. School, 62—65 Chandos Place, LONDON W.C. 2, England a. The development of the genital tract. Ovis aries (Artiodactyla) ROSSI, A. Dr. — 1st. di Anat. comp. "G. B. Grassi", Fac. di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia a. Xenoplastic grafts. (Amphibia) b. Morphological differentiation of the nervous system. (Amphibia) ROSSI, Miss M. R. Dr. Nat. Sci. — 1st. di Anat. Comp., Via Belmeloro 8, BOLOGNA (103), Italia a. Nucleic acids and phosphorus in development. (Anura; Aves) (in colla- boration with Miss C. PAVANELLI) ROSSINI, Miss M. C. Dr. Nat. Sci. — 1st. di Anat. Comp., Via Belmeloro 8, BOLOGNA (103), Italia a. Cellular movements in neurulation. (Amphibia) b. Histogenesis of the liver. Lampetra spec. (Cyclostomata) ROSTAND, J. M.I.I.E. — 29 Rue Pradier, VILLE D'AVRAY, Seine et Oise, France a. Parthenogenese et gynogenese; regulation chromosomique par le froid. (Amphibia) b. Mutations (polydactylie, ectrodactylie, etc.) et anomalies provoquees par le milieu exterieur (principalement, "Anomalie P"). (Amphibia) c. Action protectrice de la glycerine a l'egard de la congelation des cellules spermatiques. (Amphibia) ROTHENBUHLER, W. C. B.S., M.S., Ph.D. — Dept. of Zool. and Ento- mol., Coll. of Agriculture, 360 Science Building, Iowa State Univ., AMES, Iowa, U.S.A. a. Cleavage of zygote and accessory sperms in the origin of gynandro- morphs. Apis mellifera (Hymenoptera) b. Genetics of sex determination in haplo-diploid mosaics. Apis mellifera (Hymenoptera) ROTT, Mrs. N. N. Cand. Biol. Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Induction of diploid androgenesis by heat treatment. Ambystoma mexi- canum (Urodela) ROULSTON, W. J. M.Sc — Veter. Parasitol. Lab., C.S.I.R.O., YEE- RONGPILLY, Queensland, Australia a. Sulfhydryl content and oxygen uptake of untreated eggs and eggs exposed to acaricides. Boophilus microplus (Ixodidae, Acarina) ROUSSEV, G. K. Dr. — Med. Research Inst., 27 Blvd. Hristo Botev, SOFIA 6, Bulgaria a. Methods of obtaining and mode of action of stage ontogenins. Triturus cristatus (Urodela) b. Data on the chemical nature of stage ontogenins. Triturus cristatus (Urodela) 118 ROUX, Ch. Dr. en Med. — Lab. d'Embryol.. Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Influence teratogene des intoxications. Mus rattus (Rodentia) b. Anomalies de l'appareil urogenital. Mus rattus (Rodentia) ROWINSKI, P. Prof. — 1st. di Fisiol. gen. e spec, degli Animali domestici e Chim. biol., Univ. di Perugia, PERUGIA, Italia a. Histochemical and chemical determination of acetylcholinesterase and cholinesterase in muscular tissue (skeletal muscle, heart, gizzard) and its significance in relation to the changing parameters of excitability during differentiation. Gallus domesticus (Aves) RUBEN, L. N. A.B., M.S., Ph.D. — Dept. of Biol., Reed Coll., PORT- LAND 2, Ore., U.S.A. a. The interrelationships of cancer and regenerating systems. Rana pipiens, Ambystoma opacum, Ttiturus viridescens, Taricha granulosa (Amphibia) b. The induction of supernumerary limbs. Rana pipiens, Ambystoma opa- cum, Triturus viridescens, Taricha granulosa (Amphibia) RUCH, J. V. — Inst. d'Embryol., Fac. de Med., 1 Place de l'Hopital, STRASBOURG, France a. Recherches sur la symetrie bilaterale. (Pisces) b. Recherches sur le maintien des canaux de Miiller. RODEBERG, S. I. Fil.lic. — Tornblad-Inst. for comp. Embryol., Biskops- gatan 7, LUND, Sweden a. Embryogenesis of cerebellar nuclei. (Vertebrata) RUDNICK, Miss D. Ph.D., M.I.I.E. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Glutamine metabolism in development. Gallus spec. (Aves) RUGH, R. A.B., M.A., Ph.D., M.I.I.E. — Radiol. Res. Lab., Dept. of Radiol., Coll. of Physicians & Surgeons, Columbia Univ., 630 West 168th St., NEW YORK 32, N.Y., U.S.A. a. Heterosis and X-irradiation tolerance. Mus musculus (Rodentia) b. Sensitivity to irradiation of the fetal testes at different stages of deve- lopment. Mus musculus (Rodentia) c. Reparation of the fetal eye following irradiation insult. Mus musculus (Rodentia) d. Behavior following low-level fetal X-irradiation. Rattus norvegicus (Rodentia) RULON, G. O. Ph.D. — Dept. of Biol. Sci., Northwestern Univ., EVAN- STON, 111., U.S.A. a. The control of growth and differentiation through the use of enzyme inhibitors and activators. (Echinoidea) b. The control of head forms and reconstitutional processes with enzyme inhibitors. (Planariidae, Turbellaria) c. The preservation of fertility of eggs with various chemical compounds. ( ' Echinodermata) RUNNER, M. N. Ph.D., M.I.I.E. — Program for Developm. Biol., National Sci. Found., WASHINGTON 25, D.C., U.S.A. a. Hormonal induction of ovulation, conception and pregnancy in prepuberal animals. Mus musculus (Rodentia) b. Parental and dietary influences on skeletal morphogenesis. Mus musculus (Rodentia) 119 Runner-Sal c. Carbohydrate metabolism in relation to chemically induced phenocopies of the skeleton. Mus musculus (Rodentia) d. Hereditary susceptibility to congenital deformity. Mus musculus (Ro- dentia) RUNNSTROM, J. A. M. Ph.D., M.D., F.I.I.E., Prof. (Emer.) — Wenner- Gren's Inst, for exper. Biol, Norrtullsgatan 16, STOCKHOLM Va., Sweden a. The activation impulse in fertilization and artificial parthenogenesis. (Echinoidea) b. Fine cell structure and cell division. (Echinoidea) c. The bilateral organization of the egg. (Echinoidea) d. The role of the animal-vegetal balance in development. The character and mode of action of the vegetal agents. (Echinoidea) RUSSELL (BRAUCH), Mrs. L. Ph.D. — Mammalian Genet, and Develop- ment Sect., Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. RUSSO-CAIA, S. Dott., Prof. Inc. — 1st. di Zool. e Anat. Comp., Univ. di Camerino, CAMERINO, Italia a. Biochemistry of development. ( Aves; Mammalia) b. Biochemistry of metamorphosis. Musca domestica (Diptera) RUTH, R. F. Ph.D. — Dept. of Zool., Univ. of Alberta, EDMONTON, Alberta, Canada a. Immunogenetic analysis of graft rejection and graft-versus-host reac- tions in the very young animal. Gallus gallus (Aves) b. Permanent impairment of the immune mechanisms by local irradiation of the thymus and the bursa Fabricii of the very young animal. Gallus gallus (Aves) RUTSCHKY, C. W. Ph.D.— Dept. of Zool. & Entomol., Pennsylvania State Univ., University Park, Pa., U.S.A. a. Development of nervous system. (Insecta) RYCHTER, Z. MUDr. — Dept. of Anat, Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a. Experimental morphology of the aortic arches and of the heart loop. Gallus domesticus (Aves) b. Experimental analysis of cardiovascular anomalies. Gallus domesticus (Aves) c. Embryonic microhaemodynamics. Gallus domesticus (Aves) RZEHAK, K. F. M.Sc. — Dept. of Biol, and Embryol., Acad, of Med., ul. Kopernika 7, KRAKOW, Poland a. Neural competence of the ectoderm. Ambystoma mexicanum (Urodela) b. The influence of the regeneration process on the organism. (Amphibia) SABBADIN, A. Dr., Prof. — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Loredan 10, PADOVA, Italia a. Gonad development. Influence of thyroidectomy and hypophysectomy: role of mesonephros and adrenals. (Amphibia) b. Sexual and asexual reproduction. (Ascidiacea) SACHS, R. M. B.S., Ph.D. — Dept. of Floricult., Univ. of California, 300 Veteran Ave., LOS ANGELES 24, Cal., U.S.A. a. Shoot histogenesis; subapical meristematic activity and its regulation by gibberellic acid, AMO-1618, and maleic hydrazide. Chrysanthemum morifolium 120 b. Cell division in tissue cultures inhibited by AMO-1618 and reversed by gibberellic acid. Daucus carota, Chrysanthemum morifolium c. Shoot histogenesis in flower stalks: promotion by auxins and gibberellins and unknown substance(s) from flower buds. Gerbeta jamesonii, Ta- raxacum commune SAITO. T. — Lab. of Embryol. and Exper. Morphol., Zool. Inst., Dept. of Sci., Kyoto Univ., KYOTO, Japan a. Histochemical studies on regeneration. Triturus pyrrhogaster (Urodela) SAKAI, H. Ph.D. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. A method for the isolation of the egg cortex. (Echinoidea) b. The behaviour of a thread model made with a protein fraction of the egg. (Echinoidea) c. Sulfhydryl groups during cleavage of the egg. (Echinoidea) SAKAI, Mrs. Y. T. M.A. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. Removal of the chorion from eggs. Oryzias latipes (Teleostei) b. Bipolar differentiation after partial fertilization and activation. Oryzias latipes (Teleostei) SALA, M., S.J. Dr., M.I.I.E. — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Loredan 10, PADOVA, Italia a. Distribution of activating and transforming principles in the archenteron roof of the neurula (analysis of the regional induction of the nervous system). Amby stoma mexicanum (Urodela) b. The patterns of heterogeneous induction. Xenopus laevis (Anura) (in collaboration with J. SIRLIN, Edinburgh, and Mrs. R. M. CLAYTON (FREEDMAN), Edinburgh) c. Development of the nervous system. Lacerta sicula (Lacertilia) SALAON, Miss J. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Formation experimentale d'embryons homoplastiques et heteroplastiques. Gallus gallus (Aves), Rattus rattus (Rodentia) SALFI, M. Dr. Sci. Nat., Prof. — 1st. di Zool. dell'Universita di Napoli, Via Mezzocannone 8, NAPOLI, Italia a. Blastogenesi. (Ascidiacea) SALLES, J. M. de — Inst, de Biol., Fac. Filosofia, Univ. de Minas Gerais, Caixa Postal 253, BELO HORIZONTE, M.G., Brazil a. Cytochemical and morphological research on nucleoli and granules in the germinal vesicle of the oocyte. (Anura) (in collaboration with G. SCHREIBER) SALSER, G. M. Dr.med. — Anat. Inst., Wahringerstr. 13, WIEN 9, Oesterreich a. Normal and abnormal development of the pericardium. Homo sapiens (Primates) b. Development of the organon buccotemporale (Chievitz). (Reptilia) SALZGEBER, Miss B. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France 121 Salzgeber-Sch a. Recherches sur Taction d'agents physiques et chiraiques sur la differen- ciation sexuelle. b. Action de substances chimiques sur les gonades embryonnaires cultivees in vitro. c. Etude sur les associations de gonades embryonnaires de deux classes. Gallus spec. (Aves), Mus spec. (Rodentia) SAMANO BISHOP. Miss A. Dr. — Inst, de Biol.. Ciudad Universitaria, MEXICO D.F., Mexico a. Embryology. Centruroides spp., Vejovis spp. (Scorpiones, Arachnoidea) b. The fine structure and histochemistry of the venomous gland. Centru~ roides limpidus limpidus (Scorpiones, Arachnoidea) SAMBUICHI, H. D.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Hi- gashisenda-cho, HIROSHIMA, Japan a. The effect of irradiation with y- and UV-rays on the nucleus and cyto- plasm of eggs. Rana nigromaculata (Anura) SANDER, K. Dr.rer.nat., Ph.D. — Zool. Inst, der Univ. Wiirzburg, Ront- genring 10, WQRZBERG, Deutsche Bundesrepublik a. Primitiventwicklung. Organisationsmuster. Euscelis plebejus (Cicadina, Homoptera) SANYAL, S. M.Sc, D.Phil. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Morphallaxis as a factor in morphogenesis. Hydra spec. (Coelenterata) b. Determination and individuation. Hydra spec. (Coelenterata) (in coll- aboration with S. MOOKERJEE and A. K. SINHA) SARA, M. Dott.Nat.Sci., Prof. — 1st. di Zool. dell'Universita di Napoli, Via Mezzocannone 8, NAPOLI, Italia a. Gametogenesi. (Porifera) b. Cicli sessuali (gonocorismo, ermafroditismo, inversione del sesso). Poly- mastia spec, Aaptos spec, Hymeniacidon spec, Cliona spec. (Porifera) SARKAR, D. N. — Cell Research Unit., Dept. of Zool., Calcutta Univ., 35 Balygunje Circular Road, CALCUTTA 19, India SASAKI, N. M.Sc. — Dept. of Biol., Fac. of Sci., Kumamoto Univ., Kuroka- mi-machi, KUMAMOTO-Shi, Japan a. Lens induction by a crude protein extracted from rabbit bone-marrow. b. Inductive effects of chick-embryo juice on presumptive epidermis. Tritu- rus pyrrhogaster (Urodela) c Physico-chemical nature of inducing substances. SATO, T. D.Sc, D.Phil.Nat., M.I.I.E., Prof. — Biol. Inst., Fac. of. Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. Biochemical and electron microscopical studies on lens regeneration. Tti- turus pyrrhogaster (Urodela) b. Comparative studies on lens regeneration. (Cobitidinae, Siluridae, Te~ leostei) SAUNDERS, J. W. B.S., M.S.. Ph.D., M.I.I.E., Prof. — Dept. of Biol. Marquette Univ., 1217 West Wisconsin Ave.. MILWAUKEE 3. Wis., U.S.A. a. The role of ectoderm in the development of the limbs. Gallus domesticus (Aves) b. An analysis of the factors affecting tract-specificity in embryonic feather areas. Gallus domesticus (Aves) 122 c. Ectoderm-mesoderm interactions in formation of the limbs. Gallus do- mesticus (Aues) d. Cellular deaths in morphogenesis. Gallus domesticus (Aves), Mus mus- culus (Rodentia) e. Production of tumor-specific antibodies. Gallus domesticus (Aves), Mus musculus (Rodentia) SAUSER, G. Dr., Prof. — Histol.-Embryol. Inst, der Univ., Mullerstr. 59, INNSBRUCK, Tyrol, Oesterreich SAWADA, N. — Biol. Inst., Ehime Univ., MATSUYAMA, Japan a. Physiological studies on the initiation and the processes of the breakdown of germinal vesicles. (Echiuroidea; Polychaeta; Pelecypoda) b. Structural changes of cortical layers in marine eggs. (Echiuroidea; Poly- chaeta; Pelecypoda) SAWIN, P. B. B.S., M.S., Sc.D. — Roscoe B. Jackson Memorial Lab., BAR HARBOR, Me., U.S.A. a. Development and genetics. Oryctolagus cuniculus (Lagomorpha) SAXEN, L. O. M.A., M.D., M.I. I.E. — Dept. of Physiol. Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI, Finland a. The inductive action of malignant tissues. Trituvus spec. (Urodela) (in collaboration with S. I. TOIVONEN) b. The mechanism of the primary induction. Triturus spec. (Urodela) (in collaboration with S. I. TOIVONEN and E. T. VAINIO) SCALI, V. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italia a. Cytology of the gonads. (Urodela) SCHALEKAMP, M. A. D. H. Med.Drs. — Anat.-Embryol. Lab., State Univ., Janskerkhof 3A, UTRECHT, Netherlands a. Immunochemical studies of changes in protein composition during em- bryonic development: proteins of brain, serum, yolk and haemoglobins. Gallus domesticus (Aves) SCHARLOO, W. Ph.D. — Genet. Lab., State Univ., Binnenvestgracht 8, LEIDEN, Netherlands a. Temperature and expression of mutant characters. Drosophila melanogas- ter (Diptera) SCHECHTMAN, A. M. A.B., Ph.D., F.I.I.E., Prof. — Dept. of Zool., Univ. of California, LOS ANGELES 24, Cal., U.S.A. SCHEIB (PFLEGER), Mrs. D. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Aspects histochimiques (lipides) de la differenciation sexuelle des gona- des; lois du developpement normal et en culture. Gallus gallus (Aves) b. Etude enzymologique sur les canaux de Muller en liaison avec l'aspect ultrastructural de la regression. Gallus gallus (Aves) SCHENK, R. Dr.med., Prof. — Anat. Inst, der Univ., Pestalozzistr. 20, BASEL, Schweiz SCHINCKEL, P. G. B.V.Sc. — Div. of Animal Physiol, C.S.I.R.O., Ian Clunies Ross Animal Research Lab., Great Western Highway, (P.O. Box 144, Parramatta), PROSPECT, N.S.W., Australia a. Pre-natal development and organization of the hair follicle population. Ov is spec. (Artiodactyla) 123 Schinckel-Sco b. Mitotic activity and fibre growth. (Mammalia) SCHLESINGER, A. B. B.A., M.S., Ph.D., Prof. — Dept. of Biol., Creighton Univ., OMAHA 31, Nebraska, U.S.A. a. Physical and chemical nature of yolk. (Aves) b. Mechanisms of growth of the marginal blastoderm. Gallus spec. (Aves) c. Incorporation of nucleic acid precursors in yolk into yolk sac cells. Gal- lus spec. (Aves) SCHMIDT, A. J. B.A., M.S., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. a. The hormonal influences on regenerating systems. Triturus viridescens (Urodela) b. The chemistry of regenerating systems. Triturus viridescens (Urodela) SCHMIDT, G. A. Dr.Biol.Sci., M.I. I.E., Prof. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Early embryology. Talpa europaea (Insectivora), Ovis aries, Bos taurus (Artiodactyla) b. Embryology. Lineus desori, L. ruber (Nemertini) c. The periodisation of prenatal development. Bos taurus (Artiodactyla) SCHMIDT, G. H. Dr.rer.nat. — Inst, fur Angewandte Zool. der Univ., Na- turw. Fak., Rontgenring 10, WORZBURG, Deutsche Bundesrepublik a. Postembryonic development of holometabolic forms. Esp. Formica polyc- tena (Hymenoptera) SCHNEIDER. D. Dr.rer.nat. — Zool. Inst, der Univ., Luisenstr. 14, MON- CHEN, Deutsche Bundesrepublik a. Entwicklungsphysiologie des Phototropismus. b. Bildung des Integuments. c. Regeneration. d. Polymorphismus. Bugula avicularia (Gymnolaemata, Bryozoa ectoproc- ta) e. Wachstum von Kalkkristallen im Integument. (Bryozoa stenolaemata et gymnolaemata) SCHNEIDER, I. M.D. — Dept. of Anat., Univ. Med. School, SZEGED, Hungary a. Developmental histochemistry of motor end plates (cholinesterase ac- tivity). Mus rattus (Rodentia) (in collaboration with B. CSILLIK and G. KALMAN) b. Submicroscopical analysis of the development of post-synaptic mem- branes. Mus rattus (Rodentia) (in collaboration with B. CSILLIK and G. KALMAN) c. Developmental histochemistry of muscle spindles (cholinesterase activity). Mus rattus (Rodentia) (in collaboration with B. CSILLIK and G. KAL- MAN) SCHNEIDERMAN, H. A. Dr. — Developm. Biol. Center, Dept. of Anat., School of Med., Western Reserve Univ., 2109 Adelbert Road, CLEVE- LAND 6, Ohio, U.S.A. SCHNETTER, M. Dr.Phil. — Museum fur Naturkunde, Gerberau 32, FREIBURG i. Brsg., Deutsche Bundesrepublik a. Experimental embryology. Apis mellifica (Hymenoptera) SCHOELLER, Miss. J. Dr. es Sci. — Lab. de Zool. et Physiol, anim., Fac. des Sci. de Bordeaux, 40 Rue Lamartine, TALENCE, Gironde, France 124 a. Analyse experimental de la cephalogenese larvaire et imaginale. Calli- phora spec. (Diptera) SCHOTTfi, O. E. Dr.. M.I.I.E., Prof. — Dept. of Biol., Amherst Coll., AM- HERST, Mass., U.S.A. SCHOWING, J. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Recherches des inducteurs cephaliques. Leur action sur la morphogenese du crane. Gallus gallus (Aves) SCHREIBER, B. M.I.I.E., Prof. — 1st. di Zool. e Anat. comp., Univ. di Parma, PARMA, Italia a. The action of organ extracts upon the proliferative activity of homolo- gous organs cultivated in vitro. b. Investigations on the induction of endosteal bone in in vitro culture of bone marrow. (Aves) SCHREIBER, G. Ph.D., Prof., Full Member Acad. Brasil de Cienc. — Inst, de Biol., Fac. Filosofia, Univ. de Minas Gerais, Caixa Postal 253, BELO HORIZONTE, M.G., Brazil a. Cytochemical and morphological research on nucleoli and granules in the germinal vesicle of the oocyte. (Anura) (in collaboration with J. M. de SALLES) b. Cytophotometric determination of DNA in the nuclei of the liver during larval development and metamorphosis. (Anura) (in collaboration with W. MONTEIRO) c. Cytochemical (DNA, RNA and proteins) and cytometric studies on nuclei and nucleoli during the formation of corneal denticles of tadpoles. (Anura) (in collaboration with N. MELUCCI and W. MONTEIRO) SCHUMACHER, G.-H. Dr.Dr., Prof. — Anat. Inst, der Univ. Rostock, Gertrudenstr. 9, ROSTOCK, Deutsche Bundesrepublik a. Allometrische Organuntersuchungen und Osteogenese. Mesocricetus auratus (Rodentia) b. Craniogenese und Osteogenese. Larus ridibundus, Gallus domesticus (Aves) SCHUNZEL, G. Dipl.Biol. — Biol. Inst., Med. Akad., Erich-Weinertstr. 3, MAGDEBURG, Deutsche Demokratische Republik a. Untersuchungen zur vergleichenden Histogenese und Histochemie des Magenepithels. Mus musculus, Microtus brandi (Cricetidae, Rodentia) SCHWANDER, J. — Inst, de Physiol. Gener., 15 Place Carnot, NANCY (Meurthe & Moselle), France a. Recherches experimentales sur la chronologie du developpement biochimi- que au niveau de l'encephale. Gallus domesticus (Aves) (en collaboration avec J. F. GAYET) SCHWARTZ, V. Dr.rer.nat., Prof. — Zool. Inst, der Univ. Tubingen, Hol- derlinstr. 12, TUBINGEN, Deutsche Bundesrepublik a. Entwicklungsphysiologie. (Protozoa) b. Experimented Analyse der Ontogenese des Flugelmusters. Plodia spec. (Lepidoptera) SCOTHORNE, R. J. B.Sc, M.D., F.R.S.E., Prof. — Dept. of Anat., Med. School, King's Coll., Univ. of Durham, NEWCASTLE upon Tyne, England 125 Scothorne-Sho a. Development of pharyngeal derivatives. (Aues; Mammalia) b. Development of nasal cavity. (Aves) SEDRA, S. N. B.Sc, M.Sc, Ph.D., F.Z.S., M.I. I.E. — Dept. of Zool., Alexandria Univ., Moharram Bey, ALEXANDRIA, Egypt a. Behaviour of egg laying. Rana fusca, Bufo regularis (Anura) b. The chronological order of ossification. Bufo regularis (Anura) SEGAL, S. J. B.A., M.S., Ph.D., M.I.I.E. — Population Council, Rockefeller Inst., 66th St. and York Ave., NEW YORK 21, N.Y., U.S.A. a. Immunologic analysis of pituitary gonadotrophin function: development and species specificity. (Vertebrata) SEIDEL, F. Dr.Phil, F.I. I.E., Prof. — Zool. Inst, der Univ., Ketzerbach 63, (16) MARBURG/Lahn, Deutsche Bundesrepublik SEKIGUCHI, K. Ph.D. — Inst, of Zool, Univ. of Education, Otsuka-Kubo- machi 24, Bunkyo-ku, TOKYO, Japan a. Regulation in the developing egg. Tachypleus tridentatus (Xiphosura, Merostomata) (in collaboration with H. OKA) SELMAN, G. G. B.Sc, Ph.D., M.I.I.E. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Some measurements of morphogenetic forces and the mechanical proper- ties of the tissue concerned. (Amphibia) b. Study of certain features of developing embryos using electronmicro- graphs. (Diptera; Amphibia) (in collaboration with C. H. WADDING- TON and Miss M. M. PERRY) SEMBRAT, K. Ph.D., Sc.D., M.I.I.E., Prof. — Zaklad Zool. Ogolnej, Inst. Zool., Uniw. we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Poland SENGEL, Miss C. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Mise au point d'une technique de culture in vitro d'organes et de tissus en voie de regeneration, en adaptant la methode de Et. C. Wolff et K. Haffen. Dugesia lugubris (Turbellaria) SENGEL, Ph. Dr. es Sci., M.I.I.E. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Pigmentation de la peau d'embryon cultivee in vitro sur milieux na- turels et synthetiques. Gallus gallus (Aues) b. Analyse in vitro des roles du derme et de l'epiderme dans la diffe- renciation des germes plumaires chez l'embryon. Gallus gallus (Aues) c. Etude de Taction de divers extraits d'organes sur la differenciation et la croissance de la peau et des germes plumaires. Gallus gallus (Aues) SENO, T. — Dept. of Anat., School of Med., Gunma Univ., MAEBASHI, Japan SENSENIG, E. C. B.A., M.S., Ph.D., M.I.I.E., Prof. — Dept. of Anat., Med. Center, Univ. of Alabama, 1919 Seventh Ave. So., BIRMING- HAM 3, Ala., U.S.A. a. Development of the lumbo-sacro-coccygeal segments. Homo sapiens (Pri- mates) 126 b. Normal and abnormal development of the occipitocervical region. Oryc- tolagus cuniculus (Lagomorpha) c. Development of the visual and auditory centers. Homo sapiens, Macacus spec, Mus spec. (Mammalia) SENTEIN, P. M.I.I.E., Prof.agr. — Lab. d'Histol., Fac. de Med., MONT- PELLIER, France a. Action des antimitotiques sur l'oeuf. Pleurodeles Waltlii, Triturus hel- ve ticus (Urodela) b. Relation entre la mitose et le plan de cytodierese dans l'oeuf en segmen- tation. Pleurodeles Waltlii, Triturus helveticus (Urodela) c. Description, role et cytochimie des ,, formations chromatoides" dans l'oeuf en segmentation. (Urodela) SETOGUTI, T. Dr.Med. — First Dept. of Anat., Gifu Pref. Med. School, Kitonomachi, GIFU, Japan SETTLE, G. W. A.B., M.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Anatomy of club-foot deformities (particularly talipes equinovaris) in the fetus. Homo sapiens (Primates) SHAFFER, B. M. M.A., Ph.D. — Zool. Dept., Univ. of Cambridge, CAM- BRIDGE, England SHAH, R. V. Ph.D. — Dept. of Zool., Univ. of Baroda, BARODA 2, India SHANER, R. F. Ph.D., F.R.S.C, Prof. (Emer.) — Dept. of Anat., Med. School, Univ. of Alberta, EDMONTON, Alberta, Canada a. The development of abnormal semilunar valves and coronary arteries. (Mammalia) SHAVER, J. R. A.B., Ph.D., M.I.I.E. — Zool. Dept., Biol. Research Centre, Michigan State Univ., EAST LANSING, Mich., U.S.A. a. Investigations of specificity of jelly-coat in fertilization (immunology, bio- chemistry). Rana clamitans, R.pipiens (Anura) b. Transmission of agent of renal carcinoma via egg. Rana pipiens (Anura) c. Studies on initiation of cleavage; chemical and physical agents in forma- tion of spindle. Rana pipiens (Anura) d. Effects of antibodies on development; studies on histogenesis after treat- ment of embryo with anti-adult organ proteins. Rana pipiens (Anura) SHEN, S. C. Ph.D., M.I.I.E. — Dept. of Anat., Columbia Univ., 630 West 168th St., NEW YORK 32, N.Y., U.S.A. SHIINO, S. M. B.Sc, D.Sc. — Zool. Inst., Fac. of Fisheries, Mie Prefectural Univ., TSU-Shi, Mie-Ken, Japan (no embryological work in progress) SHIN-IK£, T. Dr. — Osaka Dental Coll., HIRAKATA City, Osaka Pref., Japan a. Factors in the morphogenesis of the pronephric cystem. Triturus purrho- gaster (Urodela) SHIOMI, T. — Div. of Genet., National Inst, of Radiol. Sci., Kurosuna-cho, CHIBA, Japan a. Studies on the hereditary lethals. Drosophila spec. (Diptera) b. Radiation effects on development. Drosophila spec. (Diptera) SHOGER, R. L. A.B., M.S. , Ph.D. — Carleton Coll., NORTHFIELD, Minn., U.S.A. a. Regulative capacity of the node region. Gallus domesticus (Aves) 127 Shoger-Sko b. Further investigation on EDTA (versene) inhibition of definitive streak embryos. Gallus domesticus (Aves) c. Histochemical analysis of EDTA treated early embryos. Gallus domes- ticus (Aves) SHORT, B. F. M.Agr.Sci., Ph.D. — Div. of Animal Physiol., C.S.I.R.O., Ian Clunies Ross Animal Research Lab., Great Western Highway, (P.O. Box 144, Parramatta), PROSPECT, N.S.W., Australia a. Morphogenesis of wool follicles and fibres. Ovis spec. (Artiodactyla) SHULOV, A. Dr.Sc — Dept. of Zool., Hebrew Univ., JERUSALEM, Israel SIGOT, M. Lie. es Sic. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Morphogenese du tube digestif en culture i n v i t r o. Gallus spec. (Aves) SIGOT (LUIZARD), Mrs. M. F. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Culture de tissus cancereux sur des organes embryonnaires de poulet ex- plantes in vitro. Mus musculus, Rattus tattus, Homo sapiens (Mam- malia) SILBERZAHN, P. Dr. Vet. — Lab. de Zool. exper., Fac. des Sci., 16 Quai CI. Bernard, LYON, France a. Hematopoi'ese. (Pisces) SILfiN, L. K. P. Fil.Dr., Prof. — Zool. Inst., Univ. of Stockholm, 70A Rad- mansgatan, STOCKHOLM, Sweden a. Development of the nervous system. (Entei opneusta) SILVER, P. H. S. Ph.D. — Anat. Dept., Middlesex Hosp. Med. School, LONDON W. 1, England SIMON, Mrs. D. Dr. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zol. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Explantation in vitro de jeunes embryons, localisation et migration des cellules germinales aux premiers stades du developpement. Gallus spec. (Aves) SIMONSBERGER, P. — Dept. of Embryol., Fac. de Ci.Med., Universidad de Los Andes, MfiRIDA, Venezuela a. Teratology. Homo sapiens (Primates) b. Development of mammary gland. Homo sapiens (Primates) c. Comparative embryology of laboratory animals. SINCLAIR, J. G. B.S., M.S., Ph.D. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex., U.S.A. a. Anterior cerebral nerve plexus in adult and fetus. Tursiops truncatus, Oryctolagus cuniculus, Mus musculus, Homo sapiens (Mammalia) b. Continued study of developmental anomalies. Brain. Heart. Mus muscu- lus, Homo sapiens (Mammalia) c. Continued study of transplacental effects of urethan. Mus musculus (Ro- dentia) d. Developmental pattern and mechanism of iris and ciliary body. Tursiops truncatus, Oryctolagus cuniculus, Mus musculus, Homo sapiens (Mam- malia) 128 e. Development of head structure with special attention to cranial nerves, blowhole and ear. Prodelphinius coerulealbus (Cetacea) SINGER, M. B.S., M.A., Ph.D., Prof. — Developm. Biol. Center, Dept. of Anat., School of Med., Western Reserve Univ., 2109 Adelbert Road, CLEVELAND 6, Ohio, U.S.A. SINGER, R. M.B., Ch.B., F.R.S.S.A., F.R.A.I. — Dept. of Anat., Med. School, Univ. of Cape Town, MOWBRAY, C.P., South Africa a. General embryology. Homo sapiens (Primates) SINHA, A. K. M.Sc. — Dept. of Zool., Presidency Coll., College St., CAL- CUTTA 12, India a. Experimental determination of polarity. Hydra spec. (Coelenterata) b. Determination and individuation. Hydra spec. (Coelenterata) (in colla- boration with S. MOOKERJEE and S. SANYAL) SIRAKAMI, K. I. Sc.Dr., M.I. I.E. — Dept. of Biol., Yamanashi Univ., KOFU, Japan a. Various types of movements expressed by isolated blastomeres. Triturus pyrrhogaster, Bufo vulgaris (Amphibia) b. Chemical nature of the intercellular matrix of the early embryo. Bufo vul- garis (Anura) SIRLIN, J. L. Dr.Nat.Sci., M.I. I.E. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Differentiation of protein and nucleic acids in embryonic cells. (Diptera; Amphibia; Aves) b. Metabolism of radioisotopes. Triturus spec. (Urodela) (in collaboration with C. H. WADDINGTON) c. Histochemical autoradiographical studies on mucopolysaccharides in the salivary gland. Drosophila spec. (Drosophilidae, Diptera) , Brady sia spec. (Chironomidae, Diptera), Smittia spec. (Sciaridae, Diptera) (in collabo- ration with K. KATO) d. Electron microscopic studies of the salivary glands. Bradysia spec. (Scia- ridae, Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration with J. JACOB) e. Biochemical cytology of the salivary glands. Bradysia spec. (Sciaridae, Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration with J. JACOB) f. Cytochemistry of nucleoli. Bradysia spec. (Sciaridae, Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration with C. J. TANDLER) g. The patterns of heterogenous induction. Xenopus laevis (Anura) (in col- laboration with M. SALA, S.J., Padova, and Mrs. R. M. CLAYTON (FREEDMAN)) SKOWRON, S. Ph.D., Prof. — Dept. of Biol, and Embryol., Acad, of Med., and Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRA- K6W, Poland a. Properties of regeneration blastemal cells. Ambystoma mexicanum, Sala- mandra salamandra (Urodela) (in collaboration with H. ROGUSKI) SKOWRON (CENDRZAK), Mrs. A. M.Sc — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland a. Experimental induction of immunological tolerance in embryos and adult animals. Transfer of immunological tolerance to Fx generation. Mesocri- cetus auratus, Mus musculus, Rattus spec. (Rodentia) (in collaboration with Mrs. I. SPISAK (PLONKA) and J. ZABInSKI) 129 Skowron (Cendrzak)-Spr b. Development of antigenic properties in regeneration. Ambystoma mexica- num (Urodela) SKREB, N. M.D., D.Sc, M.I.I.E. — Inst, de Biol., Fac. de Med., Salata, ZAGREB, Yougoslavie a. Investigation of the differentiation of the embryo in the anterior chamber of the eye. Rattus norvegicus albinus (Rodentia) (in collaboration with Miss B. LEVAK) b. Action of several antimitotics on development. Rattus norvegicus albinus (Rodentia) (in collaboration with M. MOLLER) c. Analysis of early embryonic development by means of X-rays. Rattus norvegicus albinus (Rodentia) (in collaboration with N. BIJELIC) d. Influence of high and low temperature on development. Rattus norvegi- cus albinus (Rodentia) (in collaboration with Z. FRANK and B. DO- MAC, Inst. d'Histol.) e. Relative growth of organs in the embryo. Rattus norvegicus albinus (Ro- dentia) (in collaboration with L. HOFMAN) f. Metabolism of early embryonic stages. Rattus norvegicus albinus (Ro- dentia) SLABY, O. MUDr., RNDr., D.Sc, Prof.— Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., Karlovarska ul. 48, PLZEN, Czechoslovakia a. The development of the skull. (Amniota, including Homo sapiens) b. The development of the limbs. (Amniota, including Homo sapiens) c. The development of the nasal cavity. (Amniota, including Homo sapiens) d. Experimental analysis of the morphogenesis of the limbs. Gallus domes- ticus (Aves) , Rattus rattus (Rodentia) e. Experimental production of congenital defects of limbs. Gallus domesti- cus (Aves), Rattus rattus (Rodentia) f. Factors producing malformations. (Amniota, including Homo sapiens) SLADECEK, F. RNDr., C.Sc, M.I.I.E., Prof. — Dept. of Gener. and Exper. Zool., Zool. Inst, of Charles Univ., Vinicna 7, PRAHA 2, Cze- choslovakia a. Transplantation of nuclei and cytoplasmic components. (Amphibia) (in collaboration with Miss Z. STEFANOVA) b. Significance of ploidy in embryonic induction. (Urodela) SLIJPER, E. J. Dr., Prof. — Zool. Lab. der Univ., Plantage Doklaan 44, AMSTERDAM C, Netherlands a. The embryonic blood circulation (ductus Botalli, ductus Arantii etc.) (Cetacea) SLIPKA, J. MUDr., RNDr., C.Sc. — Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., Karlovarska 48, PLZEN, Czechoslovakia a. The development of the branchial region. (Amniota, including Homo sapiens) b. The early development of the thyroid gland. (Amniota, including Homo sapiens) SMITHBERG, M. Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Florida, GAINESVILLE, Florida, U.S.A. SMITTEN, Mrs. N. A. Cand.Med.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. 130 a. Development of the sympatho-adrenal system. (Amphibia; Aves; Mam- malia) b. Cytological indices of cell differentiation in the nerve tube of early em- bryos. (Amphibia; Aves) c. Study of neuro-humoral regulation of melanogenesis. (Mammalia) SMRECZYNSKI. S. Ph.D. — Zool. Dept. of the Jagiellonian Univ., sw. Anny 6, KRAKOW, Poland (no embryological work in progress) SNELLEN, H. A. Med.Dr., Prof . — Dept. of Cardiol., Fac. of Med., Acad. Ziekenhuis, LEIDEN, Netherlands a. Heart and vessels in congenital malformations. Homo sapiens (Primates) (in collaboration with J. DANKMEIJER, Miss A. DEKKER and Miss H. C. van INGEN) SOLERE, Dr. en Med. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Developpement normal et anormal de l'appareil digestif. Mus rattus (Ro~ dentia) , Homo sapiens (Primates) SOROKIN, S. P. A.B., M.D. — Dept. of Anat., Harvard Med. School, 25 Shattuck St., BOSTON 15, Mass., U.S.A. a. Histochemistry and electron microscopy of organ cultures. Gallus domestic cus (Aves), Cavia cobaya, Rattus norvegicus (Rodentia) SPIEGEL, M. B.S., Ph.D. — Dept. of Zool., Dartmouth Coll., HANOVER, N.H., U.S.A. a. Protein changes in development. Arbacia punctulata (Echinoidea), Rana pipiens (Anura) b. Role of enzyme induction in development. Rana pipiens (Anura) SPIRITO A. Dott., M.I.I. E., Prof. — 1st. di Biol, gen., Fondazione Agraria, S. Pietro, PERUGIA, Italia a. Origine e natura dei tumori. Bufo spec. (Anura) SPISAK (PLONKA), Mrs. I. M.Sc — Dept. of Biol, and Embryol., Acad, of Med., ul. Kopernika 7, KRAKOW, Poland a. Experimental induction of immunological tolerance in embryos and adult animals. Transfer of immunological tolerance to F1 generation. Mesocri- cetus auratus, Mus musculus, Rattus spec. (Rodentia) (in collaboration with Mrs. A. SKOWRON (CENDRZAK) and J. ZABInSKI) SPOFFORD, W. R. Ph.D., Prof. — Dept. of Anat., School of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., U.S.A. a. Induction and determination in the neural plate. Ambystoma maculatum (Urodela) b. Experimental neurogenesis. Ambystoma maculatum (Urodela) SPRATT, N. T., Jr. A.B., Ph.D., F.I.I.E., Prof. — Dept. of Zool., Coll. of Sci., Lit. and Arts, Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. a. Investigating the nutrient requirements essential to morphogenesis and growth in the early stages of development (pre-streak and streak blasto- derms). Gallus domesticus (Aves) b. Survey of dehydrogenase enzymes in early embryos. Gallus domesticus (Aves) 1. Localization of enzyme activity. 2. Structural integrity and enzyme activity. 131 Spratt-Ste c. Regeneration. Planaria spec. (Turbellaria) , Tubularia spec. (Coelente- rata) d. Cytological study of the developmental center (organizer). Gallus do- mesticus (Aves) e. Analysis of mechanism of morphogenetic movements by time-lapse cine- matography. Gallus domesticus (Aves) f. Analysis of dynamic population patterns (pattern formation by free- swimming, ciliated and flagellated organisms). Tetrahymena spec, Euglena spec. (Protozoa), Arbacia punctulata (Echinoidea) SREBRO, Z. A. M.D., — Dept. of Biol, and Embryol., Acad, of Med., ul. Kopernika 7, KRAKOW, Poland a. Regeneration in the central nervous system. Xenopus laevis (Anura) SRINIVASACHAR, H. R. B.Sc, M.Sc, Ph.D. — Dept. of Zool., Central Coll., BANGALORE 1, India a. Development of chondrocranium — basis for classification and evolution. (Pisces) b. Development of osteocranium — centres of ossification, etc. (Siluroidea, Teleostei) c. Skull development. Ploceus manyar flaviceps (Passeriformes, Aves) d. Development of the skull. Rhyacotriton olympicus olymp. (Urodela) e. Allometric studies on the skull. (Siluroidea, Teleostei) SUBTELNY, S. Ph.D. — Inst, for Cancer Research, 7701 Burholme Avenue, PHILADELPHIA 11, Pa., U.S.A. a. Attempts to enhance the differentiation promoting capacity of embryonic endoderm nuclei with haploid nuclei. Rana pipiens (Anura) b. The possible relation of late embryonic deficiencies of homozygous diploid embryos with the isogenic constitution of their nuclei. Rana pipiens (Anura) c. Transplantation of embryonic nuclei into activated body cavity eggs. Rana pipiens (Anura) (in collaboration with Th. J. KING) SUGINO, H. D.Sc, M.I.I.E., Prof. — Biol. Lab., Osaka Liberal Arts Univ., Tennoji-ku, OSAKA, Japan a. Transplantation experiments. Dugesia gonocephala (Tricladidea) b. Regeneration of cerebral ganglia. Dugesia gonocephala (Tricladidea) SUGIYAMA, M. M.A., D.Sc, M.I.I.E. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, Mie-ken, Japan a. Physiological studies on fertilization and artificial parthenogenesis. He- micentrotus pulcherrimus, Pseudocentrotus depressus (Echinoidea) (in collaboration with M. I. ISHIKAWA) SULLIVAN, G. E. M.Sc, Ph.D. — Dept. of Histol. and Embryol., Univ. of Sydney, SYDNEY, N.S.W., Australia a. Effect of paralysis with decamethonium on the morphogenesis of the wing musculature. Gallus spec. (Aves) b. Effect of removal of insertions on the development of the musculature of the wing. Gallus spec. (Aves) SUMINSKI, E. H. M.V.Sc — Lab. of Histol. and Embryol., Veter. Fac, ul. Grochowska 272, WARSZAWA, Poland a. Descriptive and physiological studies of development. Salamandra macu- losa (Urodela) 132 STAGNI. Miss A. Dr. — 1st. di Zool., Via S. Giacomo 9, BOLOGNA, Italia a. Regeneration, origin of germ-cells and gametogenesis. Spirorbis pagen- stecheri (Serpulidae, Polychaeta) b. Sex determination and sex differentiation. Chlorohydra viridissima (Hy~ droidea) STALSBERG, H. Cand.med. — Anat. Inst., Univ. of Oslo, Karl Johansgt. 47, OSLO, Norway a. Extirpation of the epiphysis cerebri in the embryo. Gallus domesticus (Aves) b. Hemostasis in the embryo. Gallus domesticus (Aves) STARCK, D. Dr.Med., F.I. I.E., Prof. — Dr. Senckenberg. Anat. Inst., Med. Fak. der Univ., Ludwig Rehnstr. 14, FRANKFURT/Main-Siid, Deut- sche Bundesrepublik STAUGAARD, B. C. A.B., M.S — Dept. of Zool., Univ. of Connecticut, STORRS, Conn., U.S.A. a. Morphogenesis and function in embryonic kidney. Gallus domesticus (Aves), Mus musclus (Rodentia) STEDING, G. cand.med. — Anat. Inst, der Univ., Kreuzbergring 36, GoT- TINGEN, Deutsche Bundesrepublik a. Experimente zur Entwicklung des Ruckenmarkes. Gallus gallus (Aves) STEFAN, Miss Y. Lie. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst. de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Morphogenese du tractus genital et des gonades. Emys lepvosa (Chelo- nia) , (Ophidia) STEFANELLI, A. Dr., F.I. I.E., Prof.ord. — 1st. di Anat. comp. "G. B. Grassi", Fac. di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia a. Histogenetic determination and differentiation of nervous cells. (Te~ leostei; Amphibia; Aves) b. Degeneration and regeneration of nervous cells. (Teleostei; Amphibia; Aves) c. Social behaviour of cultivated cells. (Amphibia; Aves) d. Correlated and partial movements of spermatozoa. (Amphibia; Aves) e. Cytochemistry of development and regeneration. (Amphibia; Aves) f . Antimitotic action on in vitro explanted organs. Gallus domesticus (Aves) g. Factors of nervous fibre orientation in vitro. Gallus domesticus, Coturnix cotutnix japonica (Aves) STEFANOVA, Miss Z. Dr. — Dept. of Gener. and Exper. Zool., Zool. Inst, of Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a. Hybridization and heteroploidy. (Anura) b. Transplantation of nuclei and cytoplasmic components. (Amphibia) (in collaboration with F. SLADEcEK) STEGNER, H.-E. Dr.Med. — Frauenklinik der Universitat, Universitats- Krankenhaus Eppendorf, Martinistr. 52, HAMBURG 20, Deutsche Bun- desrepublik a. Histopochemische und elektronenmikroskopische Untersuchungen an Oozyten verschiedener Reife. Homo sapiens (Primates) (in Zusammen- arbeit mit H. WARTENBERG) b. Organogenese des weiblichen Genitaltraktes; histopochemische und elek- tronenmikroskopische Untersuchungen. Homo sapiens (Primates) 133 Ste-Str STEIN, Miss K. F. A.B., M.S., Ph.D. — Dept. of Zool, Mount Holyoke Coll., SOUTH HADLEY, Mass., U.S.A. a. Development of an abnormal homozygote due to the looptail gene (Lp). Mus musculus (Rodentia) b. Histochemical study of normal development and of the abnormal homo- zygote LpLp. Mus musculus (Rodentia) c. Study of two mutations in the waltzer-shaker group. Mus musculus (Ro- dentia) STEINBERG, D. M. Dr.Biol.Sci., Prof. — Zool. Inst., Acad, of Sci. of the U.S.S.R., Universitetskaja Nabereshnaja 1, LENINGRAD B-164, U.S.S.R. a. Potentialities of tissues in ontogenesis and phylogenesis. (Insecta) b. Larval development and metamorphosis of parasitic forms transplanted into new hosts. Differentiation of imaginal buds and hormonal control. Angitia fenestralis (Hymenoptera), transplanted from Plutella maculi- pennis into Galleria mellonella STEINBERG, M. S. B.A., M.A., Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Chemical bonds between embryonic cells. Various spp. (Amphibia) b. Mechanism of selective adhesion (cell affinities) in embryonic cellls. Gal- lus domesticus (Aves) STEINER, H. Dr.Phil., Prof. — Zool.-vergl. Anat. Inst., Naturw. Fak., Univ. Zurich, Kunstlergasse 16, ZURICH 6, Schweiz STEINITZ, H. Ph.D. — Dept. of Zool., Hebrew Univ., JERUSALEM, Israel STENGER (HAFFEN), Mrs. K. E. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Recherches sur la differenciation et 1'intersexualite in vitro et in vivo des gonades embryonnaires. (Aves) (en collaboration avec Et. C. WOLFF) STEPHAN, Fr. Dr. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 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 gallus (Aves) b. Etude experimentale des anomalies et des suppleances vasculaires dans l'aire extraembryonnaire et l'embryon. Gallus gallus (Aves) STEPHAN (DUBOIS), Mrs. F. Dr. es Sci., M.I.I.E. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Univer- site, STRASBOURG, France a. Migration et differenciation des cellules de regeneration. (Planariidae d'eau douce, Oligochaeta micvodrila, Polychaeta errantia) STEPHENSON, Mrs. E. M. M.Sc, Ph.D. — Dept. of Zool., School of Biol. Sci., Univ. of New South Wales, P.O. Box I, KENSINGTON, N.S.W., Australia a. Study of cell relations in tissue culture. Gallus domesticus (Aves), Mus musculus (Rodentia) (in collaboration with M. ABERCROMBIE, Lon- don, England, and Miss D. M. LAMONT, London, England) 131 STEPHENSON, N. G. M.Sc, Ph.D. — Dept. of Zool., Univ. of Sydney, SYDNEY, N.S.W., Australia a. Descriptive and experimental embryology. (Australian Lacertilia; Gek~ konidae, etc.) b. Descriptive and experimental embryology; metamorphosis. ( Leptodactyli- dae, Anura) STERN, K. M.D., Prof. — Dept. of Pathol., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. a. Relationship of reticulo-endothelial function to growth processes, as exemplified by liver regeneration after partial hepatectomy. Rattus spec. (Rodentia) STEVENS, L. C. Ph.D. — Roscoe B. Jackson Memorial Lab., BAR HAR- BOR, Me., U.S.A. a. Histogenesis of testicular teratoma (strain 129). Mus musculus (Ro- dentia) b. Developmental genetics. Mus musculus (Rodentia) STINSON, B. D. B.S., M.S., Ph.D. — Dept. of Anat., Cornell Univ. Med. Coll., 1300 York Avenue, NEW YORK 21, N.Y., U.S.A. a. Regeneration of X-irradiated limb stumps following implantation of normal tissues (adult). Triturus viridescens (Utodela) STOCK, A. D.Phil., Ph.D. — Dept. of Zool., Univ. of New England, ARMIDALE 5 N, N.S.W., Australia a. Regeneration and the endocrine system. Blattella germanica (Dictyoptera, Insecta) (in collaboration with A. F. O'FARRELL and Miss J. MOR- GAN) STOCKARD, A. H. Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich., U.S.A. a. Early embryology from fertilization through gastrulation. Osmerus mor- dax, Brachydanio revio, Percina caprodes (Teleostei) (in collaboration with R. O. LEGAULT, Ottawa) STOLL, R. Dr. en Med., Dr. es Sci., Prof. — Lab. d'Histol., Fac. de Med., 1 Place de la Victoire, BORDEAUX, France STONE, L. S. Ph.B., Ph.D., F.I.I.E., Prof. — Anat. Dept., School of Med., Yale Univ., 333 Cedar St., NEW HAVEN 11, Conn., U.S.A. — Osborn Zool. Lab., Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Regeneration of retina, iris and lens from retina pigment cells. (Urodela) b. Factors controlling the inhibition and release of lens regeneration. (Uro- dela) c. Tissue culture studies of lens regeneration from the iris. (Urodela) d. Tissue culture studies of retina pigment cells. (Urodela; Mammalia) e. Development of vision in transplanted eyes. (Urodela) STOUT, Miss V. M. M.Sc, Ph.D. — Dept. of Zool., Canterbury Univ., CHRISTCHURCH, New Zealand a. Descriptive embryology. Lepidurus apus (Notostraca, Crustacea) b. Descriptive embryology. Daphnia magna (Cladocera, Crustacea) STRAHAN, R. M.Sc. — Dept. of Zool., Univ. of Hong Kong, HONG KONG a. Development and morphology. (Cyclostomata) STRAUSS, F. M.D., M.I.I.E., Prof. — Anat. Inst., Biihlstr. 26, BERN. Schweiz a. The oviduct during the passage of the egg. (Mammalia) 135 Strauss- Tak b. Comparative implantation. (Mammalia) c. Comparative anatomy of the female reproductive system. (Mammalia) STRAZNICKY, Ch. Ph.D. — Dept. of Anat., Univ. Med. School, Dischka u 5, PECS, Hungary a. Analysis of atrophy occurring in muscles innervated by inappropriate spinal segments. Gallus domesticus (Aves) b. Reflex and behaviour patterns developing after heterotopic transplantation of medullary tube. Gallus domesticus (Aves) (in collaboration with J. SZENTAGOTHAI) STROEVA, Miss O. G. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. The significance of blood-circulation in the morphogenesis of the eye. Rattus norvegicus, Mus musculus (Rodentia) b. The significance of blood-circulation in retinal differentiation. Rattus norvegicus (Rodentia) c. Mitosis inhibition as a factor of differentiation of the pigment epithelium. Rana ridibunda, Bufo vitidis (Anura), Rattus norvegicus (Rodentia) d. Nuclear transplantation from the gastrula ectoderm, neural plate, eye rudiment and early endoderm. Rana arvalis (Anura) (in collaboration with Mrs. L. A. NIKITINA) STRUDEL, G. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Developpement du systeme nerveux orthosympathique. (Aves) b. Developpement de la colonne vertebrale. (Aves) c. Role inducteur de la chorde et du tube nerveux; chondrogenese. (Aves) STUCHLY, Z. Dr., Prof. — ZaMad Biol. Ogolnej, Akad. Med., ul. Bujwi- da 9, WROCLAW, Poland a. Influence of blockage of the reticulo-endothelial system on metamorpho- sis. (Amphibia) STULZ, W. A. B.A., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Ver- mont, BURLINGTON, Vt, U.S.A. SUKIRNA, M. Prof. — Fakultas Kedokteran, Universitas Indonesia, Bag. Ilmu Djaringan Tubuh, Salemba no. 6, DJAKARTA, Indonesia SUSSMAN, M. — Dept. of Biol., Brandeis Univ., WALTHAM 54, Mass., U.S.A. a. Genetic and developmental studies. Dictyostelium spec. (Acrasiales) (in collaboration with R. R. SUSSMAN) SUSSMAN, R. R. — Dept. of Biol., Brandeis Univ., WALTHAM 54, Mass., U.S.A. a. Genetic and developmental studies. Dictyostelium spec. (Acrasiales) (in collaboration with M. SUSSMAN) SVAJGER, A. Dr.med. — Dept. of Histol. and Embryol., Med. Fac, ZA- GREB, Yugoslavia SWANN, M. M. M.A., Ph.D., Prof. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Fertilization and cleavage. (Echinoidea) b. Division and growth in micro-organisms. 136 SWARTZ. G. E. B.A., M.A., Ph.D. — Dept. of Biol.. Univ. of Buffalo. BUFFALO 14. N.Y.. U.S.A. a. Descriptive embryology, experimental embryology and regeneration. Cri- cetus auratus ( Rodentia) SZANKOWSKA, Z. M.V.Sc. — Lab. of Histol. and Embryol., Veter. Fac., ul. Grochowska 272. WARSZAWA, Poland a. Histochemical aspects of ooqenesis. Salamandra maculosa (Urodela) SZEKELY, G. M.D. — Dept. of Anat., Univ. Med. School. Dischka u 5, PECS, Hungary a. Analysis of ambulatory movement by transplantation of cervical or lum- bal cord segments and limbs into midthoracic level. Pleurodeles Waltlii (Urodela) SZENTAGOTHAI, J. M.D., Prof. — Dept. of Anat.. Univ. Med. School. Dischka u 5, PECS, Hungary a. Reflex and behaviour patterns developing after heterotopic transplanta- tion of medullary tube. Gallus domesticus (Aves) (in collaboration with Ch. STRAZNICKY) SZUBINSKA, Mrs. B. S. — Zaklad Anat. Porownawczej U.J. im H. Hoyera, sw. Anny 6, KRAKOW, Poland a. Yolk. (Teleostei) TAHARA, Y. — Lab. of Morphol.. Osaka Lib. Arts Univ., IKEDA, Osaka Pref., Japan a. Analysis of the determination of the lens. (Amphibia) TAHMISIAN, T. N. B.A., M.S., Ph.D. — Argonne National Lab., 9700 South Cass Ave., ARGONNE, 111., U.S.A. a. Effects of ionizing irradiations on tissue differentiation and metabolism in embryos. Melanoplus diff. differentialis (Orthoptera) b. Dose rate effect upon teratogenesis. Melanoplus diff. differentialis (Or- thoptera) c. Organelle induction and differentiation in spermatogenesis as affected by X irradiation. Melanoplus diff. differentialis (Orthoptera) TAKAHASHI, H. M.Sc, D.Sc. — Dept. of Physiol., School of Med., Hok- kaido Univ., SAPPORO, Japan a. The action of steroid hormones on sex differentiation. Bufo spec. (Anura) TAKAMI, T. Dr.Agr. — Dept. of Physiol., Sericult. Exper. Stat., Koenji, Suginami-ku, TOKYO, Japan a. Embryology with special reference to the dormancy and activation of the hibernating egg. Bombyx mori (Lepidoptera) b. Tissue culture and in vitro studies on the embryo, yolk cell and other egg components. Bombyx mori (Lepidoptera) TAKANO. K. T. Dr.Med. — Dept. of Anat., Mie prefect. Univ., TSU-City, Japan — Dept. of Anat.. Kyoto Univ., KYOTO, Japan a. Experimental analysis of Wolffian lens regeneration. Triturus pyrrho- gaster (Urodela) b. Ultrastructure of the lens-regenerating eye, especially of its retina. Tri- turus pyrrhogaster (Urodela) TAKASHIMA, R. M.D., Prof. — First Dept. of Anat. and Komatsujima Station for Exper. Biol., School of Med., Tokushima Univ., TOKUSHI- MA, Japan 137 Takashima-The a. Electron microscopical studies on the fertilization mechanism. (Echino- dermata; Mammalia) TAKATA, Miss C. Sc.D. — Dept. of Anat., Fac. of Med., Univ. of Tokyo. Hongo, TOKYO, Japan a. Muscular differentiation of trunk somites cultured on coverslips. Tritutus pyrrhogaster (Utodela) TAKATA, K. D.Sc, M.I.I.E. — Dept. of Zool., Univ. of California, BER- KELEY 4, Cal., U.S.A. a. Biochemical analysis of embryonic polysaccharides. Triturus pyrrhogaster (Urodela) (in collaboration with S. OHNO, Nagoya) b. Immunochemical analysis of the induction process. Triturus pyrrhogaster (Urodela) (in collaboration with T. YAM AD A, Oak Ridge, and T. S. OKADA, Kyoto) TAKAYA, H. Ph.D., M.I.I.E., Prof. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, KOBE, Japan a. Regional differentiation of the central nervous system. Triturus spec, Hynobius spec, Bufo spec, Rana spec. (Amphibia) b. Production of situs inversus viscerum. Triturus spec, Hynobius spec, Rana spec, Bufo spec. (Amphibia) c Thermal influence upon the development of the early embryo. Triturus spec, Hynobius spec, Bufo spec, Rana spec. (Amphibia) d. Chemical phenocopies. Drosophila melanogaster (Diptera) (in collabo- ration with I. INOUYE and S. KAJI) TAKEUCHI, I. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. a. Immunochemical and immuno-histochemical studies on development. Dic~ tyostelium mucoroides (Acrasiales) TAKEUCHI, K. D.Sc. — Biol. Inst, Fac. of Sci., Nagoya Univ., Chikusa- ku, NAGOYA, Japan a. Studies of hunchback. Oryzias latipes (Teleostei) b. Carotenoid and xantophore development. Oryzias latipes (Teleostei) TAKISAWA, A. B.M., M.D., Prof. — Anat. Inst., Gunma Univ., MAE- BASHI, Japan TAMPION (THOMASON), Mrs. D. M.A., Ph.D. — Dept. of Physiol., Nat. Inst, for Research in Dairying, SHINFIELD, Reading, England a. A study of sperm metabolism and motility in the presence of secretions of the female genital tract, especially cervical mucus. (Mammalia) TANDLER, C. J. Dr.Nat.Sci. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Cytochemistry of nucleoli. Smittia spec. (Chironomidae, Diptera), Bra- dysia spec. (Sciaridae, Diptera) (in collaboration with J. L. SIRLIN) TARKOWSKI, A. K. M.I.I.E. — Zool. Inst., Univ. of Warsaw, WARS- ZAWA 64, Poland a. Development of isolated blastomeres. Mus musculus (Rodentia) b. Analysis of development of chimaeras produced by fusing eggs. Mus musculus (Rodentia) TARTAGLIA, P. M.D. — Clinica Ostetrica e Ginecol. "P. Sfameni", Via Massarenti 13, BOLOGNA, Italia a. The changes induced in the fetal endocrine system by the administration of drugs active on the autonomic nervous system (sympathetico- and parasympatheticolytic and -mimetic drugs). (Mammalia) 138 TARTAR. V. B.S., M.S., Ph.D. — Dept. of Zool., Univ. of Washington, SEATTLE 5, Wash., U.S.A. a. Relation of amount of nucleus to the rate of regeneration. Stentor coeru- leus (Ciliata) b. Production of chimeras. Stentor spp. (Ciliata) c. Inter-racial grafts with disharmonies in same. Stentor coeruleus (Ciliata) d. Amorphic forms in unnutrified cultures. Stentor coeruleus (Ciliata) TAVARES DE SOUSA, A. Dr., Prof. — Inst, de Histol. e Embriol. da Fac. de Med., COIMBRA, Portugal (no embryological work in progress) TAYLOR A C Dr. M.I.I.E., Prof . — Rockefeller Inst, for Med. Research, 66th St. and York Ave., NEW YORK 21, N.Y., U.S.A. TEIXEIRA, Mrs. I. — Inst, de Histol. e Embriol., Fac. de Med., Avenida 28 de Maio, LISBOA, Portugal a. Action of mono-amine-oxidase inhibitors upon embryonic bone growth in vitro. Gallus domesticus (Aves) TENCER, Miss R. Lie. en Sci. — Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auderghem, Bel- gique a. Synthesis of DNA. (Aves) b. Neural induction and precytolysis. Ambystoma spec. (Urodela) c. Metabolism during gastrulation. Ambystoma spec. (Urodela) d. Metabolism during development. Ambystoma spec, Pleurodeles spec. (Urodela), Bufo spec, Rana spec (Anura) TESTA v. BAPPENHEIM, I. Dr.Med. (Padiater) — Inst, fur Humange- netik der Univ. Minister, Vesaliusweg 12/14, MONSTER (Westf.), Deutsche Bundesrepublik a. Ueber die Regulation der halbseitigen Organanlagen bei kunstlich er- zeugten Zwillingen. Triturus alpestris, T. taeniatus (Urodela) b. Die Frage der Entstehung von eineiigen Zwillingen, bzw. ihr normales oder anormales Verhalten. Homo sapiens (Primates) c Zur Entstehung von "Duplicitas cruciata". Cervus capreolus (ArtiO' dactyla) TE WINKEL, Miss L. E. A.B., A.M., Ph.D. — Dept. of Zool., Smith Coll., NORTHAMPTON, Mass., U.S.A. THEILER, K. Dr., Prof. — Anat. Inst, der Univ., Gloriastr. 19, ZURICH 7, Schweiz a. Viruswirkung auf Embryonen unter Heranziehung der Explantationsme- thode mit ganzen Organen. (Vertebrata) , Homo sapiens (Primates) (in Zusammenarbeit mit G. T6NDURY, J. RICKENBACHER und W. KOCHER) b. Experimentell-genetische Untersuchungen iiber die Entwicklung der Wirbelsaule. Mus musculus (Rodentia) (in Zusammenarbeit mit G. TONDURY, J. RICKENBACHER und W. KOCHER) c Experimentell-genetische Untersuchungen verschiedener Mutanten mit Schwerhorigkeit verschiedener Grade. Mus musculus (Rodentia) (in Zu- sammenarbeit mit G. TONDURY, J. RICKENBACHER und W. KO- CHER) 139 Theiler-Ton d. Untersuchungen iiber den Einfluss radiogenetischer Substanzen auf die Differenzierung der Extremitatenanlagen. Gallus domesticus (Aves), Mus musculus (Rodentia) (in Zusammenarbeit mit G. ToNDURY, J. RICKENBACHER und W. KOCHER) THIEBOLD, J. J. Dr. esSci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Morphogenese des gonades et du tractus genital. (Selachii) (en collabo- ration avec J. H.VIVIEN) THILLARD, Miss M. J. Lie, Ing.Chim. — Lab. de Biol. Anim., Pavilion Curie, Univ. de Paris, 12 Rue Cuvier, PARIS Ve, France a. Growth of nerve fibres. Gallus domesticus (Aves) b. Development of epiphysis. Gallus domesticus (Aves) THOMPSON, T. E. Ph.D. — Dept. of Zool., Univ. Coll. of South Wales and Monmouthshire, CARDIFF, Wales a. General biology, development, larval biology and post-metamorphal changes. Tritonia hombetgi (Nudibranchia, Gastropoda) b. Development. Neomenia carinata (Aplacophora, Amphineura, Mollusca) THOMSON, A. P. D. B.Sc, M.B., Ch.B. — Dept. of Anat, Med. School, Birmingham Univ., Edgbaston, BIRMINGHAM 15, England (no embryological work in progress) THORNTON, C. S. A.B., M.A., Ph.D., M.I.I.E. — Kenyon College. GAMBIER, Ohio, U.S.A. a. The effect of the apical epidermal cap on blastemal outgrowth, studied by means of tritiated thymidine labeling. Ambystoma tigrinum, A. punctatum (Urodela) b. Transplantation and splitting of apical epidermal cap and its effect on the regeneration blastema. Ambystoma talpoideum, A. tigrinum (Uro- dela) THURMOND, W. A.B., M.A., Ph.D. — Biol. Sci. Dept., California State Polytechnic Coll., SAN LUIS OBISPO, Cal., U.S.A. a. Physiogenesis of the adeno- and neurohypophysial primordia. Hyla re- gilla (Anura) TIBBITTS, F. D. — Dept. of Biol., Univ. of Nevada, RENO, Nevada, U.S.A. a. A study of placentation, specifically the histochemistry of the placenta throughout development. (Heteromyidae, Rodentia) b. A study of placental giant cells, using autoradiographic techniques in an attempt to elucidate their function(s). (Heteromyidae, Rodentia) TIEDEMANN, H. Dr.Med., Dr.rer.nat, Dr.habil., M.I.I.E. — Heiligen- berg-Inst., (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepublik a. Isolierung und chemische Charakterisierung von Determinationsstoffen. (Amphibia) (in Zusammenarbeit mit Mrs. H. TIEDEMANN (WAECHTER)) b. Untersuchungen zur regionalen Spezifitat und zur Wirkungsweise der Determinationsstoffe. (Amphibia) (in Zusammenarbeit mit Mrs. H. TIE- DEMANN (WAECHTER)) c. Bestimmungen von Enzymaktivitaten wahrend der fruhembryonalen Ent- wicklung. (Amphibia) TIEDEMANN (WAECHTER), Mrs. H. Dr.rer.nat. — Heiligenberg-Inst., (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bun- desrepublik HO a. Isolierung und chemische Charakterisierung von Determinationsstoffen. (Amphibia) (in Zusammenarbeit mit H. TIEDEMANN) b. Untersuchungen zur regionalen Spezifitat und zur Wirkungsweise der Determinationsstoffe. (Amphibia) (in Zusammenarbeit mit H. TIEDE- MANN) TIMMERMANS, Miss L. P. M. M.Sc. — Zool. Lab., State Univ., Jans- kerkhof 3, UTRECHT, Netherlands a. Cytochemistry and physiology of shell secretion. Limnaea stagnalis (Gastropoda) TISNA-AMIDJAJA, D. A. Dr.rer.nat. — Dept. of Chemistry and Biol., Inst, of Technol., Djl., Ganeca 10, BANDUNG, Indonesia TITOVA, I. I. Dr. — Inst, of Exper. Biol, Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. a. Study of the role of tissue antigens and antitissue antibodies in the reg- ulation of morphogenetical processes in the embryo. (Aves) TIXIER (VIDAL), Mrs. A. Dr. es Sci. — Lab. d'Histophysiol, Coll. de France, 4 Avenue Gordon Bennet, PARIS XVI, France TOERIEN, M. J. M.Sc, Ph.D. — Dept. of Anat., Univ. of Stellenbosch, STELLENBOSCH, South Africa a. Cranial development. Podiceps cristatus (Podicipididae, Aves) TOIT, C. A. du M.Sc, Ph.D., M.I.I.E., Prof. — Zool. Inst., Fac of Sci., Univ. of Stellenbosch, STELLENBOSCH, South Africa (no embryological work in progress) TOIVONEN, S. I. Ph.D., F.I.I.E., Prof. — Dept. of Physiol. Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI, Finland a. The specific action of heterogenous inductors. Triturus spec. (Urodela) b. The inductive action of malignant tissues. Triturus spec. (Urodela) (in collaboration with L. O. SAXEN) c The mechanism of the primary induction. Triturus spec (Urodela) (in collaboration with L. O. SAXeN and E. T. VAINIO) TOMITA, H. B.Sc, M.A. — Biol. Inst., Fac of Sci., Nagoya Univ., Chi- kusa-ku, NAGOYA, Japan a. Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in collaboration with T. YAMAMOTO and T. HISHIDA) TONDEUR, M. Cand. en Med. — Lab. d'Anat. et d'Embryol., Fac de Med., 97 Rue aux Laines, BRUXELLES, Belgique TONDURY, G. Dr., F.I.I.E., Prof. — Anat. Inst, der Univ., Gloriastr. 19, Zurich 7, Schweiz a. Viruswirkung auf Embryonen unter Heranziehung der Explantationsme- thode mit ganzen Organen. (Vertebrata) , Homo sapiens (Primates) (in Zusammenarbeit mit K. THEILER, J. RICKENBACHER und W. KOCHER) b. Experimentell-genetische Untersuchungen iiber die Entwicklung der Wirbelsaule. Mus musculus (Rodentia) (in Zusammenarbeit mit K. THEILER, J. RICKENBACHER und W. KOCHER) c Experimentell-genetische Untersuchungen verschiedener Mutanten mit Schwerhorigkeit verschiedener Grade. Mus musculus (Rodentia) (in Zu- sammenarbeit mit K. THEILER, J. RICKENBACHER und W. KO- CHER) HI Tondury-Ulr d. Untersuchungen iiber den Einfluss radiogenetischer Substanzen auf die Differenzierung der Extremitatenanlagen. Gallus domesticus (Aves), Mus musculus (Rodentia) (in Zusammenarbeit mit K. THEILER, J. RICKENBACHER und W. KOCHER) TOROK, L. J. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDAPEST IX, Hungary TORREY, Th. W. A.B., A.M., Ph.D. — Dept. of ZooL, Indiana Univ., BLOOMINGTON, Ind., U.S.A. TRACY, H. C. Ph.D., Prof. (Emer.) —Dept. of Anat, Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. — personal address: General Delivery, OXFORD. Miss., U.S.A. TRAMPUSCH, H. A. L. Ph.D., M.I. I.E. — Div. of exp. Morphol., Anat.- Embryol. Inst., Municipal Univ. of Amsterdam, Mauritskade 61, AM- STERDAM O., Netherlands a. Mechanics of the morphogenetic field during regeneration. Ambystoma mexicanum (Urodela) b. Studies to investigate inductive effects on regenerative blastemata. Am- bystoma mexicanum (Urodela) c. Experiments on inductive processes in adult organisms. Ambystoma mexicanum (Urodela) (in collaboration with Miss. A. E. HARRE- BOMEE) d. Analysis of dedifferentiation as precursor of regeneration. Ambystoma mexicanum (Urodela) (in collaboration with Miss A. E. HARREBO- MEE) e. Effect of X-rays on the pattern of nucleic acids in the regenerate. Am- bystoma mexicanum (Urodela) (in collaboration with C. D. A. VER- WOERD) f. Experiments designed to test relations of inhibitors of embryonic develop- ment to the effect of X-rays. Ambystoma mexicanum (Urodela), Mus spec. (Rodentia) (in collaboration with J. v. d. BORDEN) TRINKAUS J. P. M.A., Ph.D., M.I.I.E. — Dept. of Zool., Josiah Willard Gibbs Research Lab., Yale Univ., NEW HAVEN 11, Conn. U.S.A. a. Cytodifferentiation. Fundulus heteroclitus (Teleostei), Gallus domesti- cus (Aves) b. Cell affinities. Fundulus heteroclitus (Teleostei), Gallus domesticus (Aves) c. Mechanism of morphogenetic movements. Fundulus heteroclitus (Te- leostei), Gallus domesticus (Aves) TRIPLETT, E. L. B.A., Ph.D. — Dept. of Biol. Sci., Univ. of California, SANTA BARBARA, Cal., U.S.A. a. Studies on the nature of immune systems with special interest in their development. The nature of immunological self recognition. Hyla regilla (Anura) TRUSLOVE, Miss. G. M. B.Sc, Ph.D. — Dept. of Genet., Univ. Coll. of London, Gower St., LONDON W.C. 1, England a. Developmental genetics of skeletal mutants. Mus musculus (Rodentia) TUCHMANN-DUPLESSIS, H. M.I.I.E., Prof. — Lab. d'Embryol., Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France a. Anencephalie. Homo sapiens (Primates) b. Teratogenese par sulfamides hypoglycemiants, antimetabolites. Rattus spec. (Rodentia) (en collaboration avec Mrs. L. MERCIER (PAROT)) 142 c. Influence des hormones sur le developpement foetal. Rattus spec. (Ro- de ntia) d. Influence des alcaloides du Rauwolfia, de la reserpine et de la deserpi- dine, sur le developpement. Rattus spec. (Rodentia) (en collaboration avec Mrs. L. MERCIER (PAROT)) TUFT, P. H. M.A., Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Road, EDINBURGH 9, Scotland a. Embryonic growth: cell number, mass, density, uptake and distribution of water. Xenopus laevis (Anura) TUNG, T. C. Dr., F.I.I.E., Prof. — Lab. of Developm. Physiol., Inst, of Exper. Biol., Acad. Sinica, 320 Yo Yang Road, SHANGHAI, China TWEEDELL, K. S. B.S., M.S., Ph.D. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind., U.S.A. a. Lentoid replacement in adult eyes. Rana pipiens (Anura) b. Bipolar regeneration. Saccoglossus Kowalevskii (Ptychoderidae, Ente* ropneusta) TWITTY, V. C. Dr., F.I.I.E.. Prof. — Dept. of Biol., Stanford Univ., STANFORD, Cal., U.S.A. TYLER, A. Ph.D., F.I.I.E., Prof. — Dept. of Embryol, Div. of Biol., Cali- fornia Inst, of Technol, PASADENA 4, Cal., U.S.A. a. Physiology of fertilization. (Echinoidea) b. Physiology of early development. (Echinoidea, Polychaeta) c. Life-span, motility and metabolism of spermatozoa. (Annelida; Mollusca; Echinodermata; Aves; Mammalia) d. Immuno-embryology. Developmental immunogenetic analysis of cancer (Echinodermata etc.,) UBBELS, Miss G. A. M.Sc. — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands a. The role played by the follicle cells around the growing oocyte in the ovariotestis. Limnaea stagnalis, L. peregra (Gastropoda) b. Cytochemistry of oogenesis. Limnaea stagnalis (Gastropoda) (in collab- oration with Chr. P. RAVEN) UBISCH, L. v. Dr.jur. et phil., F.I.I.E., Prof. (Emer.) Minister i.W., Prof. (Hon.) Hamburg — PARADIS, Norway a. Entwicklung und Metamorphose des Pluteus. Genocidaris maculata, Sphaerechinus granulans (Echinoidea) b. Skelettentwicklung. Arhacia lixula (Echinoidea) c. Reziproke Bastardplutei. Genocidaris maculata, Paracentrotus lividus resp. Psammechinus microtuberculatus (Echinoidea) d. Merogone. (Genocidaris 9 ) Paracentrotus $ resp. Psammechinus $ und vice versa (Echinoidea) UCHIDA, T. A. D.Agr. — Zool. Lab., Fac. of Agriculture, Kyushu Univ., FUKUOKA, Japan a. Studies on reproduction and embryology. (Microchiroptera) ULRICH, H. Dr.phil., Prof. — Zool. Inst, der Eidg. Techn. Hochschule, Universitatstr. 2, ZURICH, Schweiz a. Action of X-rays on nucleus and cytoplasm of eggs, and on embryo- logical stages. Drosophila melanogaster (Diptera) b. Morphology, physiology and cytology of paedogenetic bisexual reproduc- tion cycle. Oligarces paradoxus, Miastor metraloas, Mycophila nikoleii (Cecidomyidae, Diptera) 143 Urb-Vis URBANI, E. M.I.I.E., Prof. — Inst, di Zool. e Anat. Comp., Univ. di Came- rino, CAMERINO, Italia a. Biochimica dello sviluppo embrionale e della metamorfosi. (Insecta; Am- phibia) b. Enzimologia e biochimica delle forme aploidi, diploidi, poliploidi. (Crusta- cea; Mammalia) URBANI (MISTRUZZI), Mrs. L. Dott. — 1st. di Zool. e Anat. Comp., Univ. di Camerino, CAMERINO, Italia URSPRUNG, H. Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Biochemical studies on differentiation. Rana pipiens (Anura) , Mus mus- culus (Rodentia) VACEK, Z. MUDr. — Embryolog. ustav lekafske fak., Univ. Karlovy, Albertov 4, PRAHA 2, Czechoslovakia a. Development of the innervation of the gonads. Homo sapiens (Primates) b. Experimental analysis of the development of the autonomic nervous system. Gallus domesticus (Aves) c. Comparative placentology. (Mammalia) VAHS, W. Dr.phil. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KOLN- Lindenthal, Deutsche Bundesrepublik a. Histochemische Untersuchung der Induktionsvorgange. Triturus spec. (Urodela) b. Biochemie und Cytochemie der Dotternutzung. Triturus spec. (Urodela) VAINIO, E. T. M.D. — Dept. of Physiol. Zool.. Univ. of Helsinki, Arka- diankatu 7, HELSINKI, Finland a. The immunological properties of heterogenous inductors. (Amphibia) b. The antigenicity of different germinal layers. Triturus spec. (Urodela) c. The mechanism of the primary induction. Triturus spec. (Urodela) (in collaboration with S. I. TOIVONEN and L. O. SAXfiN) VAKAET, L. C. M.D., M.I.I.E. — Lab. of Anat., Fac. of Med., Univ. of Gent, Bylokekaai 1, GENT, Belgium a. Early development. Gallus domesticus (Aves) b. Fetal and neonatal endocrinology. Mus musculus albinus (Rodentia) VALMIN, K. M.K. — Tornblad-Inst. for comp. Embryol., Biskopsgatan 7, LUND, Sweden a. DNA-synthesis in embryonic brain. Gallus domesticus (Aves) VANDEBROEK, G. Dr.Sc, M.I.I.E., Prof. — Lab. d'Embryol, Inst, de Zool., Univ. de Louvain, 71 Rue de Namur, LOUVAIN, Belgique VANDERH AEGHE ( HOUGARD Y ) , Mrs. F. Dr. en Sci. — Lab. de Mor- phol. anim., Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auderghem, Belgique a. Nucleo-cytoplasmic relations in normal and tumour (Ascites) cells. VANNINI, E. Dr., M.I.I.E., Prof . — 1st. di Zool., Via S. Giacomo 9, BO- LOGNA, Italia a. Experimental analysis of the development of the gonad and Bidder's organ. Bufo spec. (Amphibia) b. Sexual and asexual reproductive cycles and regeneration. Salmacina in- crustans, S. dysteri (Polychaeta) VAUPEL, M. R. A.B., Ph.D. — Dept. of Anat., Tulane Univ., NEW OR- LEANS 18, La., U.S.A. 144 a. Experimental production of congenital anomalies. Rattus norvegicus al- binus (Rodentia) b. Anatomy and physiology of central nervous system anomalies. Homo sapiens (Mammalia) VENEZIANO, P. P. M.S. — Cresap Biol. Lab.. Coll. of Liberal Arts. Northwestern Univ., EVANSTON, 111.. U.S.A. a. Alpha-lipoic acid as a growth factor in embryos. Gallus domesticus (Aves) b. The effects of magnetic forces on embryogenesis. Gallus domesticus (Aves) c. The effect of acriflavin on development of the neural tube. Gallus do- mesticus (Aves) d. The action of glucose inhibitors on development of the glycogen body. Gallus domesticus (Aves) VENZKE W. G. D.V.M, M.Sc, Ph.D. — Dept. of Veter. Anat., Ohio State Univ., 1900 Coffey Rd., COLUMBUS 10, Ohio, U.S.A. a. Morphogenesis and physiology of pineal gland. (Aves) b. Morphogenesis and physiology of blood. ( Aves) c. Experimental morphology of pineal gland. (Bovidae, Mammalia) VERDONK, N. H. M.Sc. — Zool. Lab., State Univ., Janskerkhof 3, UTRECHT, Netherlands a. Cell-lineage and head-pattern in normal and Li-treated embryos. Lim- naea stagnalis (Gastropoda) b. Cell-lineage and head-pattern in heat-shock treated embryos. Limnaea stagnalis (Gastropoda) (in collaboration with Chr. P. RAVEN) VEREJSKAJA, Miss V. N. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Induction of amphidiploidy in interspecific hybrids. Bombyx mod (Lepi- doptera) (in collaboration with B. L. ASTAUROV) b. Analysis of sterilizing effect of sublethal high temperature on eggs infected with Nosema bombycis. Bombyx mori (Lepidoptera) (in collaboration with Mrs. T. A. BEDNJAKOVA) VERWOERD, C. D. A. — Div. of exp. Morphol.. Anat-Embryol. Inst., Mu- nicipal Univ. of Amsterdam, Mauritskade 61, AMSTERDAM O., Netherlands a. Effect of X-rays on the pattern of nucleic acids in the regenerate. Am- by stoma mexicanum (Urodela) (in collaboration with H. A. L. TRAM- PUSCH) VIGH, B. Dr. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDAPEST IX, Hungary VIGNAU, Miss J. Dr. es Sci. — Lab. de Zool. exper., Fac. des Sci. de Bordeaux, 40 Rue Lamartine, TALENCE (Gironde), France a. Recherches experimentales sur la morphogenese embryonnaire de la tete. Carausius spec. (Orthoptera) VINCENT W S M.I. I.E. — Dept. of Anat., Coll. of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., U.S.A. VISSER, J. G. J. M.Sc. — Dept. of Zool., Univ. Coll. of Fort Hare, FORT HARE, South Africa a. Ontogenesis of the chondrocranium. Microsaura pumila (Chamaeleon- tidae, Reptilia) 145 Vis- War VISSER, M. H. C. M.Sc. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLENBOSCH, South Africa a. General ontogeny. Gonaxis gwandaensis (Streptaxidae, Pulmonata) VIVIEN, J. H. Dr. esSci., M.I.I.E., Prof. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de 1'Universite, STRAS- BOURG, France a. Morphogenese des gonades et du tractus genital. (Selachii) (en collabo- ration avec J. J. THIEBOLD) b. Correlations neuro-endocrines. (Pisces; Amphibia) VOLKOVA, L. S. Dr. — Inst, of Exper. Biol, of the Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. a. Immunological factors in the pathogenesis of haemolytic disease in new- borns, and of pregnancy toxicosis. Homo sapiens (Primates) VOLPE, E. P. Ph.D. — Dept. of Zool., Newcomb Coll., Tulane Univ., NEW ORLEANS 18, Louisiana, U.S.A. a. Embryonic temperature adaptations in various species. Bufo americanus, B. terrestris, B. fowled, B. woodhousei, B. valliceps (Anura) b. Inheritance of color patterns. Rana pipiens (Anura) c. Interspecific hybridization. Bufo terrestris, B. fowleri, B. valliceps (Anura) d. Descriptions of larvae. Bufo valliceps, B. quercicus, Rana palmipes, R. capito sevosa (Anura) e. Development, sex and pigmentary patterns of gynogenetic diploids. Rana pipiens (Anura) f. Gene dosage studies involving mutant color patterns. Rana pipiens (Anura) VOY, A. Dr. es Sci. — Lab. de Zool. et Biol, anim., Fac. des Sci., POI- TIERS, Vienne, France a. Croissance, regeneration. (Orthoptera) b. Oeufs a developpement rapide et oeufs a developpement retarde. Clo- nopsis spec. (Orthoptera) VYASOV, O. E. Dr., M.I.I.E. — Inst, of Exper. Biol, of the Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya 8, MOSCOW D-315, U.S.S.R. a. The formation of lens-specific proteins (antigens). (Vertebrata) b. Study of antibody-like substances in embryonic cells which react with antigens specific for early developmental stages. (Vertebrata) c. Study of immunological tolerance. (Vertebrata) WADDINGTON, C. H. Sc.D., F.R.S., F.I.I.E., Prof. — Inst, of Animal Genet., Univ. Dept. of Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland a. Metabolism of radio-isotopes. Triturus spec. (Urodela) (in collaboration with J. L. SIRLIN) b. Phenocopies. Drosophila spec. (Diptera) c. Developmental effects of metabolic antagonists. (Evertebrata; Vertebra- ta) (in collaboration with Miss M. M. PERRY) d. Electron microscope studies of gene action, (in collaboration with Miss M. M. PERRY) e. Study of certain features of developing embryos using electronmicro- graphs. (Diptera; Amphibia) (in collaboration with G. G. SELMAN and Miss M. M. PERRY) 146 WAELSCH, Mrs. S. GLUECKSOHN Ph.D., M.I.I.E.. Prof. — Dept. of Anat., Albert Einstein Coll. of Med., Eastchester Road, and Morris Park Ave., NEW YORK 61, N.Y., U.S.A. a. Developmental physiology. Mus musculus (Rodentia) b. Developmental genetics. Mus musculus (Rodentia) c. Developmental pathology. Mus musculus (Rodentia) WAGNER, G. Ph.D. — Sonnenrain, Ittigen, BERN, Schweiz WAIDYASEKARA, L. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 12, India a. Nucleo-cytoplasmic relationship. .Amoeba spec. (Ciliata) (in collabo- ration with Mrs. M. G. ALAMELU, J. DUTTA, S. MOOKERJEE and Miss D. MUKHERJI) WALASH, M. N. B.Sc. — Dept. of Zool., Fac. of Sci., Ain Shams Univ., Abassia, CAIRO, Egypt (U.A.R.) a. Studies on regeneration in tadpoles. Bufo regularis (Anuva) WALKER, B. E. B.Sc, M.Sc, Ph.D. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex., U.S.A. a. Development of the secondary palate. Mus musculus (Rodentia) b. Embryology of cortisone induced cleft palate. Mus musculus (Rodentia) c Effects on fetal development of mechanically altering the fetal environ- ment. Mus musculus (Rodentia) d. Some histochemical observations on embryonic mesenchyme. Mus muscu- lus (Rodentia) e. Radioautographic study of interkinetic nuclear migration in the neural tube. Gallus domesticus (Aves) f. The lethal effect of cortisone on embryos with spontaneous cleft lip-cleft palate. Mus musculus (Rodentia) g. Effects of transplantation on the histogenesis of transitional epithelium. Mus musculus (Rodentia) h. Radiation injury resulting from nuclear labeling with tritiated thymidine in the embryo. Gallus domesticus (Aves) j. Effects of hypervitaminosis A on palate development in two strains. Mus musculus (Rodentia) k. Abnormal palate morphogenesis in embryos induced by riboflavin de- ficiency. Mus musculus (Rodentia) WALLACE, H. M.A. — Dept. of Zool., Queen's Univ., BELFAST, N. Ire- land a. A study of the nucleolus during development. Xenopus laevis (Anura) b. Embryology. (Ascidiae) WARKANY, J. M.D., M.I. I.E. — Children's Hospital Research Foundation, CINCINNATI 20, Ohio, U.S.A. a. Experimental production of congenital heart defects. Rattus norvegicus albinus (Rodentia) b. Chromosomal studies of tissues of embryos rendered abnormal by tera- togenic agents. Rattus norvegicus albinus (Rodentia) WARTENBERG, H. Dr.Med. — Anat. Inst, der Univ., Universitats-Kran- kenhaus Eppendorf, Martinistr. 52, HAMBURG 20, Deutsche Bundes- republik 147 Wartenberg-Wen a. Histologische, histochemische und elektronenmikroskopische Unter- suchungen am Ovarialei, vor allem Untersuchungen iiber die Struktur und den Chemismus der Rindenhaut und der subkortikalen Granula. Tri- turus alpestris (Urodela), Xenopus laevis, Rana temporaria, R. esculenta (Anura) b. Elektronenmikroskopische und histochemische Untersuchungen an Oozy- ten, Oozytenentwicklung und Primitiventwicklung. Homo sapiens (Pri- mates) (in Zusammenarbeit mit H.-E. STEGNER) c. Elektronenmikroskopische Untersuchungen iiber die Vitellogenese. (Am- phibia) WATANABE, H. Ph.D. — Inst, of Zool., Univ. of Education, Otsuka- Kubomachi 24, Bunkyo-ku, TOKYO, Japan a. Colony-specificity and selective fertilization in compound forms. Botryl- lus primigenus (Ascidia) (in collaboration with H. OKA) WATANABE, T. Dr. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, KOBE, Japan a. Thermal influence upon the development of the early embryo. Triturus spec, Hynobius spec, Bufo spec, Rana spec. (Amphibia) WATERMAN, A. J. M.I.I.E., Prof. — 5 Chapin Court, Williams Coll., WILLIAMSTOWN, Mass., U.S.A. WATTERSON, R. L. Ph.D., M.I.I.E. — Dept. of Zool., Univ. of Illinois, URBANA, 111., U.S.A. a. Spina bifida at the lumbosacral level of hypophysectomized embryos and its effect on development of the glycogen body. Gallus domesticus (Aves) b. Effects of hypophysectomy upon development of long bones, hatching muscle, endocrine activity of adrenal cortex, development and alkaline phosphatase activity of the duodenum; replacement therapy. Gallus do- mesticus (Aves) c Biochemical changes in the liver of embryos treated with aminoguanidine sulfate. Gallus domesticus (Aves) d. Modified development of the glycogen body, blood and yolk sac in em- bryos partially hepatectomized by aminoguanidine sulfate. Gallus domes- ticus (Aves) e. Responses of the nervous system to changes in the hatching muscle of embryos under normal and experimental conditions. Gallus domesticus (Aves) f. Thyroid development in normal, hypophysectomized and thiourea-treated embryos. Anas boschas (Aves) g. Studies on the endocrine activity of ovaries of hypophysectomized, thiourea-treated and pinealectomized embryos. Anas boschas (Aves) WEBER, A. F.I. I.E., Prof. (Emer.) — Lab. de Neurohistol., Inst. d'Anat., Fac de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENEVE, Suisse a. Developpement du systeme nerveux. WEBER, R. D.Phil.nat. — Zool. Inst, der Univ. Bern, Sahlistr. 8, BERN, Schweiz WEBER, W. Dr.rer.nat. — Zool. Inst, der Univ. Koln, Kerpenerstr. 13, KOLN-Lindenthal, Deutsche Bundesrepublik a. Mitotische Aktivitat und Wachstumsrhythmus der Haut. Salamandra salamandra (Urodela) 148 W^GLARSKA, Miss B. D.Sc. — Zool. Dept. of the Jagiellonian Univ., sw. Anny 6, KRAKOW, Poland a. Histochemical studies on development. Melasoma populi (Coleoptera) (in collaboration with Cz. JURA and A. KRZYSTOFOWICZ) WEHRMAKER, A. Dr.rer.nat. — Heiligenberg-Inst., (17b), HEILIGEN- BERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepublik a. Einfluss der Rontgenstrahlen auf die Entwicklung. (Urodela) b. Rechts-Links-Asymmetrie. (Amphibia) c. Morphogenese des Zeichnungsmusters. (Lepidoptera) WEISS, P. A. Ph.D., M.D. (hon.c), F.I.I.E., Prof. — Dept. of developm. Biol., Rockefeller Inst, for Med. Res., 66th St. and York Ave., NEW YORK 21, N.Y., U.S.A. WEISZ, P. B. B.S., Ph.D. — Arnold Biol. Lab., Brown Univ., PROVI- DENCE 12, R.I., U.S.A. a. Study of morphogenesis. Stentor spec, Blepharisma spec. (Ciliata) b. Study of cell division. Stentor spec. (Ciliata), Rana pipiens (Anura), Mus norvegicus albinus ( Rodentia) WELANDER, A. D. B.S., M.S., Ph.D. — Fisheries Center, Univ. of Washington, SEATTLE 5, Wash., U.S.A. a. Effects of graded sublethal to lethal doses of X-rays on several different stages of the embryo. Oncorhynchus kisutch (Teleostei) b. Experimental embryology. Salmo gairdnerii, Oncorhynchus kisutch tscha- wytscha (Teleostei) c. Developmental genetics. Salmo gairdnerii, Oncorhynchus kisutch tscha- wytscha (Teleostei) WELCH, R. M. Ph.D. — Dept. of Zool., Univ. of Texas, AUSTIN 12, Texas U.S.A. WELLS, L. J. Ph.D., M.I.I.E., Prof. — Dept. of Anat., School of Med., Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. a. Growth of fetal pancreas in vitro. Mus musculus (Rodentia) b. Pregnancy and experimental diabetes. Rattus norvegicus (Rodentia) WENDER, M. B. M.D. — Neurol. Clinic, Med. Acad., ul. Przybyszews- kiego 49, POZNAN, Poland a. The chemical composition of developing nervous tissue, with special reference to the period of myelination. WENGER, B. S. B.S., M.S., Ph.D. — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Experimental and microchemical analysis of the developing nervous system and its relationship to peripheral structures. Gallus domesticus (Aves) b. Glucose-6-phosphate dehydrogenase activity of the developing spinal cord. Gallus domesticus (Aves) (in collaboration with A. BURT) c. An experimental analysis of comb development in the embryo. Gallus domesticus (Aves) (in collaboration with I. LAWRENCE) d. The development of species-specific and organ-specific antigens in em- bryos. Gallus domesticus, Anas boschas, Coturnix c. japonica (Aves) (in collaboration with H. FRIEDMAN) e. Histochemical demonstration of specific dehydrogenase during early development. Gallus domesticus (Aves) (in collaboration with Miss G. FREEMAN) 149 Wenger-Wil f. Cytochemical and microchemical study of the developing nervous system and its relationship to developing behaviour patterns. Glucoses-phos- phate dehydrogenase activity in isolated areas of brain and spinal cord. Amby stoma maculatum (Urodela) (in collaboration with Mrs. E. L. WENGER) WENGER, Mrs. E. L. B.A., M.A., Ph.D. — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Cytochemical and microchemical study of the developing nervous system and its relationship to developing behaviour patterns. Glucose-6-phos- phate dehydrogenase activity in isolated areas of brain and spinal cord. Amby stoma maculatum (Urodela) (in collaboration with B. S. WEN- GER) WENIGER, J. P. Dr. es Sci. — Lab. de Zool. et d'Embryol. exper., Inst, de Zool. et de Biol, gener., 12 Rue de l'Universite, STRASBOURG, France a. Associations d'organes embryonnaires de meme espece et d'espece diffc- rentes en culture in vitro; gonades, intestin. (Aves; Mammalia) WESSELLS, N. K. B.S., — Dept. of Biol. Sci., Stanford Univ., STAN- FORD, Cal., U.S.A. WESTON, J. A. B.A. — Dept. of Zool., Josiah Willard Gibbs Research Lab., Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Studies of the origin and migration of specific cell types in morphogenesis using tritiated-thymidine labeled cells. Gallus domesticus (Aves) WHITELEY, A. H. Dr., M.I.I.E., Prof. — Dept. of Zool., Univ. of Wash- ington, SEATTLE 5, Wash., U.S.A. WHITING, H. P. M.A., Ph.D. — Dept. of Zool., The University, BRISTOL 8, England WHITTAKER, J. R. B.A., M.S. — Dept. of Zool, Josiah Willard Gibbs Research Lab., Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. Differentiation of embryonic retinal pigment cells in vivo and i n vitro. Gallus domesticus (Aves) b. Cytochemical aspects of neural development and melanin synthesis during larval development. Styela spec, Ciona spec, Molgula spec (As- cidiae) WIERTZ (HOESSELS), Mrs. E. L. M. J. Ph.D. — Veter. Anat. and Em- bryol. Inst., State Univ., Bekkerstr. HI, UTRECHT, Netherlands a. Photographical series of normal development. Gallus domesticus (Aves) b. Photographical series of organ development. Domestic animals (Mam- malia) c Histochemical determinations in embryos. Domestic animals (Mammalia) WIGGLESWORTH, V. B. Dr., F.I.I.E., Prof. — Zool. Dept., Univ. of Cambridge, Downing St., CAMBRIDGE, England WILDE, C. E., Jr. A.B., A.M., Ph.D., M.I.I.E., Prof. — Dept. of Histol. & Embryol., School of Dentistry, Univ. of Pennsylvania, 4001 Spruce St., PHILADELPHIA 4, Pa., U.S.A. a. Organogenesis in vitro (limb bud, gills, cranial neural crest). Am- bystoma maculatum (Urodela) b. Cellular differentiation (pigment cell; ectomesenchyme). Ambystoma ma- culatum (Urodela) 1. causal biochemistry of cellular differentiation. 2. differentiation of cytoplasmic fragments. 150 c Morphology and causal biochemistry of striated muscle differentiation. Ambijstoma maculatum (Urodela) d. Continuous flow curtain electrophoresis of molecular constituents of specific embryonic anlagen and cell types. Fraction recovery and tissue culture of embryonic cells in the presence of selected fractions. Ambysto- ma maculatum (Urodela) e. Cytochimeras in tissue culture from disaggregated cells of embryos of different classes. Gatlus spec. (Aves), Mus spec. ( Rodentia) f. Role of probablistic processes in cellular differentiation. Gallus spec. (Aves), Mus spec. (Rodentia) g. Ontogeny of proteins and amino acids. Fundulus heteroclitus (Teleostei) WILENS, Miss S. W. A.B. — Dept. of Zool. (Osborn Zool. Lab.), Yale Univ., NEW HAVEN 11, Conn., U.S.A. a. The movements of the entoderm in early stages studied with the use of vital dyes. (Urodela) b. Development of the gut and associated structures. Ambystoma punctatum (Urodela) WILKINSON, W. J. C. M.B., Ch.B. — Dept. of Anat, Fac. of Med., Univ. of Sheffield, SHEFFIELD, England a. Chemical basis for the intracellular location of polysaccharides. (Mam- malia) WILLIAMS, C. M. M.I. I.E. — Bid. Lab., Harvard Univ., Divinity Ave., CAMBRIDGE 38, Mass., U.S.A. WILLIAMS. Miss D. R. B.S., M.S. — Dept. of Embryol., Div. of Biol, Cal- ifornia Inst, of Technol., PASADENA 4, Cal., U.S.A. a. Tissue culture of fertilized eggs and cumulus cells along with early cleavage stages. Mus musculus (Rodentia) b. Fertilization by intraperitoneal injection of gonadotropin solutions. Mus musculus (Rodentia) WILLIAMS, J. B.Sc, M.B., Ch.B. — Dept. of Biochem., Univ. of Cam- bridge, Tennis Court Road, CAMBRIDGE, England WILLIER, B. H. B.S., Ph.D., Sc.D., F.I.I.E., Prof. (Emer.) — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Histochemical study of the yolk sac membrane, a living transitory organ in which yolk substances are metabolized and/or transported to the growing embryo via the blood circulation. Gallus spec. (Aves) WILSON, J. G. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Flo- rida, GAINESVILLE, Florida, U.S.A. WILSON, J. W. Ph.D., Prof. — Arnold Biol. Lab., Brown Univ., PRO- VIDENCE 12, R.I., U.S.A. a. A study of mitotic activity and other cytological phenomena in liver regeneration. (Vertebrata) WILT, F. H. Ph.D. — Dept. of Biol. Sci., Purdue Univ., LA FAYETTE, Ind., U.S.A. a. Mechanism of thyroxin-stimulated visual pigment conversion during metamorphosis. (Anura) b. Mechanism of origin of hemoglobin-synthesizing machinery during de- velopment. Gallus domesticus (Aves) c. Enzymatic induction of tyrosinase in skin, in vitro. Gallus domesti- cus (Aves) 151 Wim-Wro WIMSATT, W. A. A.B., Ph.D., M.I.I.E., Prof. — Dept. of Zool., Cornell Univ., ITHACA, N.Y., U.S.A. WINDLE, W. F. B.S., M.S., Ph.D., Sc.D. — Lab. of Neuroanat. Sci., NINDB, Nat. Inst, of Health, BETHESDA, Md., U.S.A. WINGSTRAND, K. G. Dr.Phil., Prof. — Inst, of Comp. Anat, Universi- tetsparken 3, COPENHAGEN 0, Denmark a. Embryology. Armillifer spec. (Linguatulidae) (in collaboration with A. N0RREVANG) WITKAM, W. G. M. Med.drs. — Lab. for Anat., Histol. and Embryol., R.K. Univ., Kapittelweg 40, NIJMEGEN, Netherlands a. Experimental hypoplasia of the cerebellum induced by X-rays. Mus rat- tus (Rodentia) WITSCHI, E. Ph.D., F.I.I.E., Prof. — Dept. of Zool., State Univ. of Iowa, P.O. Box 585, IOWA CITY, Iowa, U.S.A. WOELLWARTH, C. v. Dr.phil, M.I.I.E. — Heiligenberg-Inst, (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepu- blik a. Induktion des Nervensystems. (Amphibia) b. Herkunft des Materials bei Induktionsgebilden. (Urodela) c. Zusammenwirken von Induktor und reagierendem Gewebe bei der Vor- derkopfinduktion. (Urodela) WOERDEMAN, M. W. M.D., D.Sc, Ph.D., F.I.I.E., Prof . — Anat.~Em- bryol. Inst., Municipal Univ. of Amsterdam, Mauritskade 61, AMSTER- DAM O., Netherlands a. Lens regeneration. (Aues; Mammalia) b. Development of specific substances during induction and regeneration. (Amphibia; Aves) WOLFF, Mrs. Em. Dr. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Recherches sur la differenciation in vitro des caracteres sexuels em- bryonnaires (gonades, canaux de Miiller etc.) et de differents organes. Besoins nutritifs des organes en culture. (Amniota) b. Culture de cellules tumorales sur des explants d'organes in vitro: as- sociation d'organes embryonnaires et de tumeurs. Homo sapiens and several animals (Vertebrata) (en collaboration avec Et. WOLFF) WOLFF, Et. C. Dr. es Sci., F.I. I.E., Prof. — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France — Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine), France a. Recherches experimentales sur l'embryologie et la teratologic Monstres simples, monstres doubles et poly-embryonie. (Aves) b. La differenciation sexuelle, 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 so- matiques precoces. Gallus spec. (Aves) c. Problemes relatifs a la regeneration. Origine des cellules de regeneration et processus d'induction dans la regeneration. Polycelis nigra, Euplanaria lugubris (Turbellaria), Triturus cristatus (Urodela) 152 d. Recherches sur la differenciation in vitro des caracteres sexuels em- bryonnaires (gonades, canaux de Miiller etc.) et de differents organes. Besoins nutritifs des organes en culture en milieux synthetiques. (Am- niota) e. Culture de cellules tumorales sur des explants d'organes in vitro: association d'organes embryonnaires et de tumeurs. Homo sapiens and several animals (Vertebrata) (en collaboration avec Mrs. Em. WOLFF) f. Association d'organes heterogenes en culture in vitro. Association d'organes d'especes et de classes differentes. Potentialites et affinites des cellules de tissus homologues et differents dans les associations hetero- genes. (Aves; Rodentia) g. Problemes relatifs aux causes de l'achondroplasie. Gallus gallus, var. Creeper (Aves) (en collaboration avec Mrs. M. A. KIENY) h. Recherches sur la differenciation et l'intersexualite in vitro et in vivo des gonades embryonnaires. (Aves) (en collaboration avec Mrs. K. E. STENGER (HAFFEN)) WOLF-HEIDEGGER, G. Dr., Prof. — Anat. Inst, der Univ., Pestalozzistr. 20, BASEL, Schweiz WOLPERT, L. M.Sc, D.I.C., Ph.D. — Dept. of Zool., King's Coll., Strand, LONDON W.C. 2, England a. Cellular basis of morphogenesis. Hydra spec. (Hydrozoa), Psammechi- nus miliatis (Echinoidea) WOLSKY, A. Dr. phil., M.I.I.E., Prof. — Biol. Lab., Fordham Univ., NEW YORK 58, N.Y.. U.S.A. a. The physiology of pigment-controlling, wing-, eye- and bristle number- controlling genes and gene complexes. Drosophila melanog aster (Diptera) b. Tissue homotransplantation (skin, internal organs, embryonic tissues). Triturus viridescens (Urodela) c. Effect of anti-metabolites on development and regeneration. Paracentro- tus lividus, Atbacia punctulata (Echinoidea), Triturus viridescens, Rana pipiens (Amphibia) WOOLLAM, D. H. M. M.A., M.D. — Anat. School, Univ. of Cambridge. CAMBRIDGE, England WRBA, H. Dr.rer.nat., Dr.med. — Pathol. Inst, der Univ., Thalkirchnerstr. 36, MONCHEN, Deutsche Bundesrepublik a. Stof fwechsel in vitro. (Rodentia) b. Eihautbildung und Differenzierung in vitro. (Rodentia) c. Heterotransplantation von Tumoren. (Rodentia) d. Missbildungen explantierter Keime. (Rodentia) WRIGHT, T. R. F. A.B., M.A., Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, Md., U.S.A. a. Development of basement membranes in normal and genetically lethal embryos. Drosophila melanogaster (Diptera) b. The ontogeny of gene-enzyme systems. Drosophila melanogaster (Dip- tera) WROBLEWSKI, R. Dr.med., Prof. — Chair of Gener. Biol., Silesian Acad, of Med., Rokitnica, ZABRZE 8, Poland a. Regeneration of the thyroid gland. Cavia cobaya (Rodentia) b. Cytological and histochemical investigations on the regenerating tail. Xenopus laevis (Anura) c. Sex determination. 153 Wur-Yow WURMBACH, H. Dr., Prof. — Entwicklungsgesch. Abt., Zool. Inst, der Univ. Bonn, BONN, Deutsche Bundesrepublik a. Beeinflussung des Wachtsums und der Differenzierung durch Wirkstoffe (Schilddrusenhormon, Steroide, Thymuswirkstoffe). Lebistes spec, Xe- nopus laevis, Gallus domesticus (Vertebrata) b. Formbildende Krafte beim Wachstum ( Wachstumsdynamik); formbil- dende Bedeutung der Gewebe. Bufo spec, Xenopus laevis (Anura) , Gal- lus domesticus (Aves) WYTTENBACH, C. R. A.B., M.A., Ph.D. — Dept. of Anat., Univ. of Chicago, CHICAGO 37, 111., U.S.A. a. Ontogeny of molecular specificity in the central nervous system. Gal- lus domesticus (Aves) b. Gross and molecular changes during development and aging of hy- dranths. Campanularia flexuosa (Hydroidea) XAVIER MORATO, M. J. Prof. — Inst, de Histol. e Embriol., Fac de Med., Avenida 28 de Maio, LISBOA, Portugal a. Development of the neurohypophysis. Oryctolagus cuniculus ( Lagomor- pha) YAJIMA, H. M.A. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. Effect of oxygen tension on the types of malformation. Chironomus dorsalis (Diptera) b. Effect of partial irradiation by ultraviolet light on the types of mal- formation. Chironomus dorsalis (Diptera) YAMADA, T. D.Sc, F.I.I.E., Prof. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK RIDGE, Tenn., U.S.A. a. Does clonal selection occur during embryonic induction? Triturus spec. (Urodela) b. Nuclear RNA synthesis in embryonic induction and regeneration. Tri- turus spec (Urodela) (in collaboration with D. PRESCOTT and S. KARASAKI) c Immunochemical analysis of the induction process. Triturus pyrrhogaster (Urodela) (in collaboration with T. S. OKADA, Kyoto, and K. TA- KATA, Berkeley) YAMAGAMI, K. — Biol. Inst., Coll. of Gener. Education, Univ. of Tokyo, 865 Komaba-cho, Meguro-ku, TOKYO, Japan YAMAMOTO, K. M.Sc, D.Sc, M.I.I.E., Prof. — Lab. of Fresh-water Fish Culture, Dept. of Biol., Fac. of Fish., Hokkaido Univ., HAKODATE, Japan a. Histo-physiological studies of oogenesis. (Teleostei) b. Electron microscopical studies of oogenesis. (Teleostei) YAMAMOTO, T. D.Sc, M.I.I.E., Prof. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan a. On the mechanism of fertilization and activation. Oryzias latipes (Te- leostei) b. Artificial induction of functional sex-reversal. Oryzias latipes (Teleostei) c Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in collaboration with T. HISHIDA and H. TOMITA) YAMAMOTO, T. S. M.Sc, D.Sc. — Dept. of Zool., Fac. of Sci., Hokkaido Univ., North 8, West 5, SAPPORO, Japan 154 a. Cytochemical investigation on development. (Teleostei) (in collaboration with Y. KANOH) YAMANA, K. M.Sc. D.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., FUKUOKA, Japan a. Two kinds of RNA in embryos and cancer tissues. (Amphibia; Mam- malia) YANAGIMACHI, R. Ph.D. — Worcester Foundation for Exp. Biol., 222 Maple Avenue, SHREWSBURY, Mass., U.S.A. a. Ovulation, fertilization. Mesocricetus auratus (Rodentia) b. Sex determination. Pettogasterella gracilis, Sacculina senta (Rhizocepha- YANAGISAWA, T. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan a. Phosphate metabolism during embryogenesis. ( Echinodermata) b. Distribution of phosphagens and guanidine phosphoryl transferases in adults and gametes. (Echinodermata) YNTEMA, C. L. Ph.D., F.I. I.E., Prof. — Dept. of Anat, School of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., U.S.A. a. Induction and differentiation of ear ectoderm. Ambystoma punctatum (Urodela) b. Regeneration of aneural limbs. Ambystoma punctatum (Urodela) c. Development of the visceral skeleton. Gallus domesticus (Aves) (in col- laboration with W. S. HAMMOND) d. Stages in embryonic development. Chelydra serpentina (Chelonia) YONEDA, M. — Embryol. Section, Dept. of Biol., Fac. of Sci., Tokyo Me- tropolitan Univ., Setagaya-ku, TOKYO, Japan a. Mechanical properties of egg cells during cleavage. (Echinodermata) YOSHIKURA, M. D.Sc. — Dept. of Biol., Fac. of Sci., Kumamoto Univ., Kurokami-machi, KUMAMOTO-Shi, Japan a. Comparative embryology. (Araneae, Arachnoidea) b. The role of the pituitary in the differentiation of the gonad. (Amphibia) c. The influence of high temperature on the differentiation of the gonads in hypophysectomized tadpoles. Rana japonica (Anura) YOUNG, B. A. M.B., B.S. — Anat. Dept., London Hosp. Med. Coll., Turner St., LONDON E. I, England a. Fine structure of foetal thyroid. Homo sapiens (Primates) YOUNG, W. C. Ph.D., Prof. — Dept. of Anat., Med. School, Univ. of Kansas, LAWRENCE, Kansas, U.S.A. a. Reproduction as influenced by hypothyroidism and hyperthyroidism in both males and females. Cavia porcellus (Rodentia) b. Sexual behaviour in the male. Cavia porcellus (Rodentia) YOW, F. W. B.S., M.S., Ph.D. — Kenyon College, GAMBIER, Ohio, U.S.A. a. Effects of ultraviolet radiation upon morphogenesis. Euplotes eurystomus (Ciliata) b. Effects of different nutrient materials upon sensitivity to ultraviolet radiation. Euplotes eurystomus (Ciliata) c. Analysis of effects of specific inhibitors of nucleic acid synthesis upon morphogenesis. Euplotes eurystomus (Ciliata) 155 Zaa-Zwi ZAAIJER, Miss J. J. P. Ph.D., M.I.I.E. — Lab. for Cytol. and exper. Histol., Fac. of Med., State Univ., Rijnsburgerweg 10, Boerhaavekwartier, LEI- DEN, Netherlands a. Cartilage and bone formation in vitro. Gallus gallus (Aves), Homo sapiens (Primates) b. Muscle fibre development. Homo sapiens (Primates) c. Toe development. Homo sapiens (Primates) ZABINSKI, J. M.Sc. — Dept. of Exper. Zool, Polish Acad, of Sci., ul. Ko- pernika 7, KRAKOW, Poland a. Experimental induction of immunological tolerance in embryos and adult animals. Transfer of immunological tolerance to F1 generation. Mesocri- cetus auratus, Mus musculus, Rattus spec. (Rodentia) (in collaboration with Mrs. I. SPISAK (PLONKA) and Mrs. A. SKOWRON (CEN- DRZAK)) ZAFFAGNINI, F. Dr. — 1st. di Zool., Via S. Giacomo 9, BOLOGNA, Italia a. Role of nurse-cells and follicular cells in oogenesis. Daphnia magna (Cladocera) ZAHND, P. J. J. Dr. en Med., Lie. es Sci. — Inst. d'Embryol., Fac. de Med., 1 Place de l'Hopital, STRASBOURG, France a. Developpement du squelette. Facteurs influengant de developpement. Anas spec. (Aves) b. Formation de l'oeuf. Physiologie; ultrastructure. (Pisces; Reptilia) c. Recherches sur le determinisme de la symetrie bilaterale. Ultrastructure. (Pisces; Reptilia) ZAMORSKA, Miss L. M.A. — Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRAKOW, Poland a. Enzymatic background of the regeneration process. Triturus spec, Xeno- pus laevis (Amphibia) (in collaboration with J. M. NIWELlNSKI) b. ^-Glucuronidase activity in transplanted regeneration blastemas. Am- by stoma spec. (Urodela) (in collaboration with J. M. NIWELlNSKI) ZELENA, Mrs. J. MUDr., Cand.Med.Sci. — Inst, of Physiol., Czechoslovak Acad, of Sci., Na cvicisti 2, PRAHA 6, Czechoslovakia a. Development of tendon organs. Rattus norvegicus (Rodentia) b. Nerve regeneration in early ontogenesis. Rattus norvegicus (Rodentia) ZENKER, W. Dr.med. — Anat. Inst., Wahringerstr. 13, WIEN 9, Oester- reich a. Development of the organon buccotemporale (Chievitz). (Mammalia) b. Development of the sulcus buccalis and anguius oris. Homo sapiens (Pri- mates) ZEUTHEN, E. Dr.phil., M.I.I.E., Prof. — Biol. Inst, of the Carlsberg Foun- dation, 16 Tagensvej, COPENHAGEN N, Denmark a. Study with Cartesian divers of mitotic rhythm in oxygen uptake and in carbon dioxyde output during cleavage period. (Ciliata; Echinoidea) b. Studies on the biochemistry and physiology of synchronized cell systems. Tetrahymena pyriformis (Holotricha, Ciliata) (in collaboration with K. HAMBURGER and P. PLESNER) c. Studies on growth and division in pure cultures. Acanthamoeba spec. (Amoebidae) (in collaboration with L. RASMUSSEN) ZIMMERMAN, A. A. M.I.I.E., Prof. — Dept. of Anat., Coll. of Med., Baylor Univ., HOUSTON, Texas, U.S.A. 156 ZOTIN, A. I. Cand.Biol.Sci. — Inst, of Animal Morphol. of the Acad, of Sci. of the U.S.S.R.. Lenin Avenue 33, MOSCOW V-71, U.S.S.R. a. Study of water metabolism in embryonic development. Huso huso, Aci- penser giildenstadti, A. stellatus (Acipenseridae, Chondtostei) , Salmo trutta, Coregonus lavaretus (Salmonidae, Teleostei) b. Energetics of fertilization, cleavage and gastrulation. (Pisces; Amphibia) ZWILLING, E. Ph.D., F.I. I.E. — Dept. of Biol, Brandeis Univ., WALT- HAM 54, Mass., U.S.A. a. Disaggregation and reaggregation of early embryos. Effects on differen- tiation. Gallus domesticus (Aves) b. Culture behaviour of early embryonic tissues. Gallus domesticus (Aves) c. Ectoderm-mesoderm interaction in limb development. Gallus domesticus (Aves) ZWIRNER, R. Dr.Med. — Heiligenberg-Inst, (17b), HEILIGENBERG, Kreis Ueberlingen/Bodensee, Deutsche Bundesrepublik 157 Egypt South Africa LIST OF INSTITUTES with Investigators engaged in Developmental Biology (geographical order) The names of investigators who appear with one or more subjects in the alphabetical list, are marked with an asterisk ( * ) . AFRICA EGYPT Alexandria, Moharram Bey, Alexandria Univ., Fac. of Sci., Dept of Zool. * SEDRA, S. N. Asst. Prof. * MICHAEL, M. I. Lect. Alexandria, Alexandria Univ., Fac. of Med., Dept. of Anat. MINA, E. Y. Cairo, Abassia, Ain Shams Univ., Fac. of Sci., Dept. of Zool. * KAMEL, A. * WALASH, M. N. MADAGASCAR Tananarive, Univ. de Madagascar, Lab. de Zool. et Biol, gener. * LEGENDRE, R. Prof. MAROCCO Rabat, Avenue Biarnay, Centre d'Etudes Sup. Sci., Lab. de Biol. Anim. METTETAL, C. Dir. LAHAYE, Mrs. J. BONS, J. SENEGAL Dakkar, Univ. de Dakkar * MOHSEN, Th. SOUTH AFRICA Bloemfontein, Univ. of O.F.S., Dept. of Zool. * DUYVENE DE WIT, J. J. Prof. PLETZEN, R. van Senior Lect. * DREYER, Miss M. V. Lect. Cape Town, Rondebosch, Univ. of Cape Town, Dept. of Zool. DAY, J. H. Prof., Dir. 158 MILLARD, Mrs. N. A. H. Lect. (no embryol. work in progress) Cape Town, Mowbray, Univ. of Cape Town, Med. School, Anat. Dept. * SINGER, R. Prof. Cape Town, Seapoint, Beach Rd.. Div. of Fisheries Du PLESSIS, C. G. Dir. * JAGER, B. de Prof., Dir. Durban, P.O. Box 736, Oceanographic Research Inst. * DAVIES, D. H. Prof., Dir. Fort Hare, Univ. Coll. of Fort Hare, Dept. of Zool. * VISSER, J. G. }. Johannesburg, Milner Park, Univ. of the Witwatersrand, Fac. of Sci., Dept. of Zool. * BALINSKY, B. I. Prof., Head * GABIE (GUBBAY), Mrs. V. Lect. Dept. of Anat. * ANDREW, Miss A. Pretoria, Univ. of Pretoria, Fac. of Sci., Dept. of Zool. ELOFF, F. C. Prof., Head MALAN, D. Sen. Lect. De GRAAFF, G. Lect. NEL, J. A. J. Lect. OOSTHUIZEN, J. H. Jun. Lect. GREYVENSTEYN, A. Jun. Lect. * NOLTE, H. v. d. V. Dept. of Sheep Husbandry and Wool Technol. JOUBERT, D. M. (no embryol. work in progress) Stellenbosch, Univ. of Stellenbosch. Fac. of Sci., Zool. Inst. Sudan U.S.A. (Ala.; TOIT, C. A. du Prof. MALAN, Miss M. E. Sen. Lect. ENGELBRECHT, D. van Z. Sen. Lect. * KOCK, J. M. de Lect. * JOUBERT, P. J. Lect. * VISSER. M. H. C. Lect. Dept. of Anat. * TOERIEN, M. J. SUDAN Khartoum, Univ. of Khartoum, Kitchener School of Med., Dept. of Anat. * BUTLER, H. Prof., Head KANAGASUNTHERAM, R. Sen. Lect. GIRGIS, M. Lect. MUNCKACSI, I. Lect. N. AMERICA CANADA ALBERTA (Alta.) Edmonton, Univ. of Alberta, Dept. of Zool. * RUTH, R. F. Med. School, Dept. of Anat. * SHANER, R. F. Prof. (Emer.) BRITISH COLUMBIA (B.C.) Vancouver 8, Univ. of British Co- lumbia, Dept. of Zool. * FINNEGAN, C. V. Assoc. Prof. MATCHETT, Miss R. Res. Asst. CAUNT, Miss V. BIGGIN, W. GOW, J. ADAMS, E. ONTARIO (Ont.) Kingston, Queens Univ., Fac. of Med., Dept. of Histol. & Embryol. * KROPP, B. N. Prof., Dir. * JOLLIE, W. P. London, Univ. of Western Ontario, Dept. of Zool. * BATTLE, Miss H. I. Prof. LAALE, H. W. Ottawa, Univ. of Ottawa, Dept. of Biol. * LEGAULT, R. O. Toronto 5, 1 12 St. George St., Univ. of Toronto, Dept. of Zool. FISHER, K. C. Prof., Chairman * McCALLION, D. J. Prof. * LIVERSAGE, R. A. Asst. Prof. * NIAZI, I. A. Res. Asst. QUEBEC (Que.) Montreal, 2900 Boulevard du Mont Royal, Univ. de Montreal, Fac. de Med., Dept. d'Histol. et d'Embryol. BONIN, W. Prof, titul., Dir. FRAPPIER, J. Prof, titul. (no embryol. work in progress) Montreal, McGill Univ., Dept. of Zool. BERRILL, N. J. Prof. Dept. of Anat. * LEBLOND, C. P. Prof. * LANGMAN, J. Prof. * CLERMONT, Y. Assoc. Prof. MAISEL, H. HUCKINS, CI. van MIEROP, R. LEURE du PRE, A. Dept. of Genetics * FRASER, F. C. TRASLER, Miss D. G. SASKATCHEWAN Saskatoon, Univ. of Saskatchewan. Dept. of Anat. ALTSCHUL, R. Prof., Dir. * FEDOROFF, S. Asst. Prof. * GROENENDIJK (HUIJBERS) Mrs. M. M. Asst. Prof. UNITED STATES ALABAMA (Ala.) Birmingham 3, 1919 Seventh Ave. So., Univ. of Alabama, Med. Center, Dept. of Anat. * SENSENIG, E. C. Prof., Chairman 159 U.S.A. (Arizona) U.S.A. (Conn.) KLAPPER, CI. E. Prof. * DUFFEY, L. M. Asst. Prof. ARIZONA Tucson, Univ. of Arizona, Zool. Dept. * BAGNARA, J. T. Prof. CALIFORNIA (Calif.) Berkeley 4, Univ. of California, Dept. of Zool. * EAKIN, R. M. Prof. MAZIA, D. Prof. * HARRIS, M. Prof. BERG, W. E. Prof. * HUMPHREYS, W. J. Res. Assoc. * TAKATA, K. Dept. of Anat. * ASLING, C. W. Hayward, Alemeda State Coll., Dept. of Biol. Sci. * HEATH, H. D. Los Angeles, Univ. of Southern Ca- lifornia, Dept. of Biol. * PRAY, T. R. Dept. of Zool. SCHECHTMAN, A. M. Prof. School of Med., Dept. of Pharmacol. * BERNSTEIN, G. S. * ROBERTS, Mrs. C. (MONTGOMERY) Dept. of Floriculture * SACHS, R. M. BRETZ, C. F. Pacific Grove, Hopkins Marine Station * MOORE, A. R. Prof. Palo Alto, Stanford Univ. Med. School, Dept. of Obstetrics & Gynecol. * GATES, A. H. DOYLE, L. L. Pasadena 4, California Inst, of Technol., Div. of Biol., Dept. of Embryol. * TYLER, A. Prof., Head, of Dept. VOGT, Miss. H. Sen. Research Fellow * BLACK, R. Research Fellow * WILLIAMS, Miss D. R. Research asst. * PIKO, L. Research Fellow NAKABAYASHI, N. Research Fellow * DENNY, P. C. Grad. Stud. San Francisco 22, Univ. of Califor- nia, School of Med., Dept. of Anat. * GLASS, Miss L. E. San Luis Obispo, California State Polytechnic Coll., Biol. Sci. Dept. * THURMOND, W. Santa Barbara, Univ. of California, Dept. of Biol. Sci. * TRIPLETT, E. L. Stanford, Stanford Univ., Dept. of Biol. Sci. TWITTY, V. C. Prof., Dir. GROBSTEIN, C. WESSELLS, N. K. School of Med., Dept. of Anat. * GRAY, D. J. Prof. COLORADO (Colo.) Denver 20, 4200 East Ninth Ave., Univ. of Colorado Med. Center * BLOCK, M. H. Dept. of Pharmacol. * KATSH, S. CONNECTICUT (Conn.) Middletown, Wesleyan Univ., Shanklin Lab. of Biol. * GOODRICH, H. B. Prof. (Emer.) * MORRILL, J. B. Asst. Prof. HANSON, E. D. New Haven 1 1 , Yale Univ., Dept. of Zool. (Osborn Zool. Lab.) * NICHOLAS, J. S. Prof., Dir. f HARRISON, R. G. Prof. (Emer.) * BOELL, E. J. Prof. * STONE, L. S. Prof. * POULSON, D. F. Prof. * WILENS, Miss S. W. Res. Assoc. * RUDNICK, Miss D. * HOOKER, D. Prof. (Emer.), Guestworker 160 U.S.A. (D.C.) U.S.A. (111.) * COUNCE (NICKLAS), Mrs. S. J. * KNIGHT, Miss P. F. Josiah Willard Gibbs Research Lab., Dept. of Zool. * TRINKAUS, J. P. HUVER, Ch. W. * WESTON, J. A. * WHITTAKER, J. R. School of Med., Anat. Dept. * STONE, L.S. Prof. CRELIN, E. S. Storrs, Univ. of Connecticut, Dept. of Zool. * CLARK, H. Prof. * HERRMANN, H. Prof. * STAUGAARD, B. * KLEIN, N. W. * EKMAN, Miss K. * COLEMAN, J. R. Storrs Agric. Exp. Stat., Dept. of Animal Genetics * LANDAUER, W. Prof., Dir. * PIERRO, L. J. Assoc. Prof. DISTRICT OF COLUMBIA (D.C.) Washington, The Catholic Univ. of America * LYNN,W. G. Washington 7, Georgetown Univ., School of Med., Dept. of Anat. * MENSCHIK, Z. Prof. Washington 17, Trinity College * DIMOND, Sister M. T. Washington 25, National Science Foundation, Program for Developmental Biol. * RUNNER, M. N. Dir. FLORIDA (Fla.) Coral Gables 46, Univ. of Miami, Dept. of Zool. * GRABOWSKI, C. T. Gainesville, Univ. of Florida, Dept. of Biol. BROOKBANK, J. W. Coll. of Med., Dept. of Anat. WILSON, J. G. Prof. FERM, V. H. SMITHBERG, M. JOHNSON, E. M. Miami 36, 1800 N.W. 10 Avenue, Howard Hughes Med. Inst., Biochem. Dept. * LI, Mrs. Yu-Ying FU Res. Asst., Prof. Tallahassee, Florida State Univ., Oceanographic Inst. METZ, C. B. HATHAWAY, R. GEORGIA (Ga.) Atlanta 22, Emory Univ., Dept. of Biol. * CLEMENT, A. C. Prof. * HUNT, E. L. Prof. * HUMPHRIES, A. A., Jr. Prof. Augusta, Med. Coll. of Georgia, Eugene Talmadge Mem. Hosp. * HEUSER, C. H. Prof. ILLINOIS (I1L) Argonne, 9700 South Cass Ave., Argonne National Lab. * TAHMISIAN, T. N. Carbondale, Southern Illinois Univ., Zool. Dept. * FOOTE, Ch. L. Prof. * FOOTE, Mrs. Fl. MARTINDALE Physiol. Dept., Nucleic Acid Metabolism Labs. FINAMORE, F. J. Chicago 12, 1853 W. Polk St., Univ. of Illinois, Coll. of Med., Dept. of Anat. * REYNOLDS, S. R. M. Prof., Head * SCHMIDT, A. J. LA VELLE, A. * DE FEO, V. J. * KRUGELIS (MacRAE), Mrs. E. J. * VAN ALTEN, P. J. YOCHIM, J. Dept. of Pathol. * STERN, K. Prof. Chicago 26, 6525 Sheridan Rd., Loyola Univ., Dept. of Biol. * HISAOKA, K. K. SPIROFF, B. E. Chicago 37, Univ. of Chicago, Biol. Sci. Div., Dept. of Zool. 161 U.S.A. (Ind.) U.S.A. (La.) * MOSCONA, A. A. Prof. (Zool.) * PRICE, Miss D. Assoc. Prof. (Embryol., Sex Biol.) * OVERTON, Mrs. J. Res. Assoc. * FREEMAN, G. Dept. of Anat. * WYTTENBACH, C. R. Evanston, Northwestern Univ., Cresap Biol. Lab. * VENEZIANO, P. P. * KING, R. C. Dept. of Biol. Sci. * RULON, G. O. Quincy, Quincy Coll., Dept. of Biol. Sci. * HECKERMAN, R. A. Assoc. Prof., Chairman Div. Nat. Sci. Urbana, Univ. of Illinois, Dept. of Zool. ADAMSTONE, F. B. Prof., Head of Dept. * WATTERSON, R. L. INDIANA (Ind.) Bloomington, Indiana Univ., Dept. of Zool. TORREY, T. W. Prof., Chairman BRIGGS, R. W. Prof. HUMPHREY, R. R. Prof. CROWELL, P. S. Asst. Prof. ^ LYTLE, Ch. F. Crawfordsville, Wabash Coll., Dept. of Zool. * BETCHAKU, T. Indianapolis 7, 1100 W. Michigan St., Indiana Univ., School of Med., Dept. of Anat. ANDREW, W. Chairman Lafayette, Purdue Univ., Dept. of Biol. * WILT, F. H. Notre Dame, Univ. of Notre Dame, Dept. of Biol. * TWEEDELL, K. S. Dir. * BENDER, H. A. IOWA (la.) Ames, Iowa State Univ., 360 Science Building, Dept. of Zool. and Entomol. 162 * HAMILTON, H. L. Prof., Chairman * ROTHENBUHLER, W. C. Assoc. Prof. * BRYAN, J. H. D. Asst. Prof. Dept. of Genet. * HOLLANDER, W. F. * BRUMBAUGH, J. A. Davenport, St. Ambrose Coll., Biol. Dept. f LYNCH, W. Prof., Chairman RICE, C. S. Des Moines 9, Coll. of Osteopath. Med. and Surgery, Dept. of Physiol. * GOLDIE, M. Iowa City, State Univ. of Iowa, Dept. of Zool. KOLLROS, J. J. Prof., Chairman WITSCHI, E. Prof., Dir. of Embryol. Lab. JOHNSON, D. C. Res. Asst., Prof. * FLICKINGER, R. Dept. of Anat. * CHENG WEI, Mrs. D. KANSAS (Kans.) Lawrence, Univ. of Kansas, Med. School, Dept. of Anat. * ROOFE, P. G. Prof., Dir. * TRACY, H. C. Prof. (Emer.) * YOUNG, W. C. Prof. * LATIMER, H. B. Prof. (Emer.) * WENGER, B. S. Asst. Prof. * WENGER, Mrs. E. L. * BURT, A. * LAWRENCE, I. * FRIEDMAN, H. * FREEMAN, Miss G. KENTUCKY (Ky.) Lexington, Univ. of Kentucky, School of Med., Dept. of Anat. McCAFFERTY, R. E. Louisville 2, 101 West Chestnut St., Univ. of Louisville, School of Med., Dept. of Anat. * HALL, E. K. LOUISIANA (La.) Baton Rouge 3, Louisiana State Univ., Dept. of Zool. U.S.A. (Me.) REAMS, W. M. Jr. Asst. Prof. New Orleans 18, Tulane Univ., Newcomb Coll., Dept. of Zool. " VOLPE, E. P. * BRANDOM, W. F. * McKlNNELL, R. G. Dept. of Anat. * MILLER, J. A. Jr. Chairman * MILLER (STONE), Mrs. F. ROSE, S. M. * VAUPEL, M. R. MAINE (Me.) Bar Harbor, Roscoe B. Jackson Memorial Lab. LITTLE, C. C. Dir. (Emer.) GREEN, E. L. Dir. * HUMMEL, Miss K. P. Staff Scient. * SAWIN, P. B. Staff Scient. * DAGG, C. P. Staff Scient. * GREEN, Mrs. M. C. Staff Scient. * STEVENS, L. C. Staff Scient. MARYLAND (Md.) Baltimore 4, Goucher Coll., Dept. of Biol. MOMENT, G. B. Baltimore 5, Johns Hopkins Univ., School of Med., Dept. of Anat. RAFFERTY, K. A. Jr. * MOYER, F. H. Dept. of Microbiol. * PAPACONSTANTINOU, J. School of Hygiene and Public Health, Dept. of Pathobiol. GRANT, Ph. Baltimore 10, 115 West University Parkway, Carnegie Inst, of Wash- ington, Dept. of Embryol. * EBERT, J. D. Prof., Dir. * BISHOP, D. W. Staff member * ROVING, B. G. Staff member * BURNS, R. K. Jr. Staff member * De HAAN, R. L. Staff member * KONIGSBERG, I. R. Staff member * RAMSEY, Miss E. M. Staff member, Pathologist U.S.A. (Mass.) * RAWLES, Miss M. E. Staff member, Curator Embryol. Collection * BARTELMEZ, G. W. Consultant, Visiting Investigator " CORNER, G. W. Jr. Visiting Investigator * DONNER, M. W. Visiting Investigator * LONG, W. N. Visiting Investigator * SETTLE, G. W. Visiting Investigator * BROWN, D. D. Fellow * CARLSON, G. L. Fellow * KATO, Y. Fellow * MORI, T. Fellow * MUN, A. M. Fellow * TAKEUCHI, I. Fellow Baltimore 18, Charles and 34th Sts., Johns Hopkins Univ., Fac. of Phil., Dept. of Biol. * WILLIER, B. H. Prof. (Emer.) * MARKERT, C. L. Prof. * BURNS, R. K. Hon. Prof. * EBERT, J. D. Hon. Prof. * STEINBERG, M. S. Asst. Prof. * LAUFER, H. Asst. Prof. * WRIGHT, T. R. F. Asst. Prof. * KECK, K. Asst. Prof. * URSPRUNG, H. Res. Assoc. * APPELLA, E. Res. Assoc. KIMMEL, D. L. Fellow Bethesda, Nat. Cancer Inst. CHALKLEY, D. T. LOVE, R. SUSKIND, R. G. Bethesda 14, Nat. Inst, of Health, N.I.N.D.B., Lab. Neuroanat. Sci. WINDLE, W. F. Chief GUTH, L. MIALE, Miss I. * COULOMBRE, A. J. * COULOMBRE, Jane L. Bethesda 14, Nat. Inst, of Arthritis and Metabolic Diseases * PARK, Miss H. D. MASSACHUSETTS (Mass.) Amherst, Amherst Coll., Dept. of Biol. 163 U.S.A. (Mich.; SCHOTTE, O. E. Prof. Boston 15, 195 Pilgrim Rd., New England Deaconess Hospital and Harvard Med. School, Lab. of Pathol. * HICKS, S. P. Boston 15, 25 Shattuck St., Harvard Univ., Med. School, Dept. of Anat. PADYKULA, Miss H. A. * SOROKIN, S. P. * HAY, Miss E. D. Cambridge 38, Divinity Ave., Harvard Univ., Biol. Lab. HOADLEY, L. Prof. (Embryol.) WILLIAMS, C. M. Cambridge 39, Massachusetts Inst. of Technol., Dept. of Biol. * BELL, E. Chestnut Hill 67, Boston Coll., Dept. of Biol. * FIMIAN, W. J. Jr. Assoc. Prof. Northampton, Smith Coll., Dept. of Zool. CARPENTER, Miss E. Prof., Chairman TE WINKEL, Miss L. E. Prof. VILLAFRANCA, G. W. de Assoc. Prof. Shrewsbury, 222 Maple Ave., Wor- cester Foundation for Exper. Biol. PINCUS, G. Prof., Dir. CHANG, M. C. * HARVEY, E. B. * YANAGIMACHI, R. * KULANGARA, A. C. South Hadley, Mount Holyoke Coll.. Dept. of Zool. ADAMS, Miss A. E. Prof. * STEIN, Miss K. F. * KALTENBACH, Mrs. J. COUFFER Waltham 54, Brandeis Univ., Dept. of Biol. * ZWILLING, E. Prof. * SUSSMAN, M. * SUSSMAN, R. R. * CAHN, R. D. * CAHN, Mrs. M. B. Woods Hole, Marine Biol. Lab. 164 U.S.A. (Minn.) * HARVEY, Mrs. E. BROWNE COLLIER, J. R. MICHIGAN (Mich.) Ann Arbor, Univ. of Michigan, Dept. of Zool. BROWN, D. E. S. Chairman * STOCKARD, A. H. Prof. * KEMP, N. E. Prof. * NACE, G. W. Prof. LOEWENTHAL, L. A. Asst Prof * CATHER, J. N. Asst. Prof. * FRYE, B. E. Asst. Prof. Med. School, Dept. of Anat. * PATTEN, B. M. Prof. (Emer.), Chairman BARRY, A. Prof. BEAUDOIN, A. R. Detroit 2, Wayne State Univ., Dept. of Biol. * HEIM, W. G. Detroit 7, Wayne State Univ., Coll. of Med., Dept. of Anat. * O'RAHILLY, R. Prof. * MEYER, D. B. East Lansing, Michigan State Univ., Zool. Dept., Biol. Research Centre * SHAVER, J. R. BARCH, Mrs. St. H. Res. Assoc. SHIVERS, C. A. Res. Fellow HUFF, R. E. Post-doct. Fellow THRONEBERRY, J. MINNESOTA (Minn.) Minneapolis 14, Univ. of Minne- sota, Coll. of Sci., Lit. and Arts, Dept. of Zool. * SPRATT, N. T. Jr. Prof., Chairman * KERR, N. S. Instr. BROKAW, Ch. Asst. Prof. School of Med., Int. of Anat. LAZAROW, A. Head, of Dept. * BOYDEN, E. A. Prof. (Emer.) * WELLS, L. J. Prof. * FELTS, W. J. L. Asst. Prof. MORGAN, C. F. Prof. Northfield, Carleton Coll. * SHOGER, R. L. U.S.A. (Miss.) MISSISSIPPI (Miss.) Jackson, Univ. of Mississippi, Med. Center * KLEIN, R. L. MISSOURI (Mo.) Columbia, Univ. of Missouri, Dept. of Zool. CONAWAY, C. H. Assoc. Prof.. Chairman BASKETT, T. S. Prof. CAMPBELL, R. S. Prof. ELDER, W. H. Prof. FLEMING, W. R. Assoc. Prof. WITT, A. Assoc. Prof. BREITENBACH, R. P. Asst. Prof. de ROOS, R. Asst. Prof. FARMER, J. Asst. Prof. KAMEMOTO, F. I. Asst. Prof. School of Med., Dept. of Anat. * BROWN, J. W. St Louis 10, Washington Univ., Med. School, Dept. of Biochemistry * CRANE, R. K. Dept. of Anat. CHIQUOINE, A. D. St. Louis 30, Washington Univ., Dept. of Zool. * HAMBURGER, V. Prof., Chairman * MOOG, Miss F. Prof. * LEVI-MONTALCINI, Miss. R. Prof. NEBRASKA (Neb.) Omaha 31, Creighton Univ., Dept. of Biol. * SCHLESINGER, A. B. Prof., Chairman NEVADA Reno, Univ. of Nevada, Dept. of Biol. * TIBBITTS, F. D. Asst. Prof. NEW HAMPSHIRE (N.H.) Hanover, Dartmouth Coll., Dept. of Zool. * SPIEGEL, M. KOIZUMI, S. Dept. of Pathol. * BENIRSCHKE, K. U.S.A. (N.Y.) NEW JERSEY (N.J.) Newark 4, 1 Lincoln Ave., Rutgers Univ., Coll. of Pharmacy FROST, D. Asst. Prof. Biol. Sci. New Brunswick, Rutgers Univ. * LEATHEM, J. H. Princeton, Box 704, Princeton Univ., Dept. of Biol. * BUTLER, E. G. Prof. * FANKHAUSER, G. Prof. * BONNER, J. T. Assoc. Prof. * ALLEN, R. D. * JACOBS, W. P. MORROW, Miss I. B. Res. Aide La MOTTE, CI. REBHUN, L. I. Teaneck, Fairleigh Dickinson Univ., Dept. Biol. Sci. * LIEDKE, Mrs. K. BEYER NEW YORK (N.Y.) Bronxville, Sarah Lawrence Coll., Dept. of Biol. * LYSER, Miss K. M. Brooklyn 10, Bedford Ave. and Ave. H, Brooklyn Coll., Dept. of Biol. * CHENEY, R. H. Prof. * MARTIN, Miss B. A. Instr. Buffalo 3, 666 Elm St., Roswell Park Memorial Inst. * BRUNST, V. V. Buffalo 14, Univ. of Buffalo, Dept. of Biol. * SWARTZ, G. E. CELESTINO, V. S. RAMM, G. M. * JAFFEE, O. C. School of Med., Dept. of Anat. * JONES, O. P. Prof., Head Cold Spring Harbor, Long Island Biol. Lab. * CHOVNICK, A. Dir. KERNAGHAN, R. P. Res. Asst. KRAUS, Miss M. Res. Asst. PROKOP, Miss B. Res. Asst. SCHALET, A. Res. Assoc. TALSMA, Mrs. J. Res. Asst. Flushing 67, Long Island, Queens Coll., Dept. of Biol. * COLWIN, A. L. Prof. 165 U.S.A. (N.Y.) * COLWIN, Mrs. L. HUNTER Prof. Ithaca, Cornell Univ., Dept. of Zool. ADELMANN, H. B. Prof. * GILBERT, P. W. Prof. WIMSATT, W. A. Prof. Lab. of exper. Embryol. * ROMANOFF, A. L. Prof. (Emer.) New York, Oyster Bay, State Univ. of New York, Long Island Center * FOWLER, J. A. New York 3, Washington Square, New York Univ., Washington Square Coll., Biol. Dept. * MARSLAND, D. A. New York 16, 550 First Ave., New York Univ. Med. Center, Dept. of Physiol. * ROCKSTEIN, M. Assoc. Prof. Dept. of Pathol. LAZZARINI-ROBERTSON, A. Jr. SCHRAGENHEIM, Miss I. LAZZARINI-ROBERTSON, Mrs. I. K. BROWN, Mrs. L. ERSEK, A. New York 21, 1300 York Ave., Cornell Univ. Med. Coll., Dept. of Anat. * STINSON, B. D. New York 21, 66th St. and York Ave., Rockefeller Inst, for Med. Res. MIRSKY, A. Dir. CORNER, G. W. Dept. of developm. Biol. WEISS, P. A. Prof., Head TAYLOR, A. C. Population Council * SEGAL, S. J. New York 27, Broadway and 1 16th St., Columbia Univ., Dept of Zool * MOORE, J. A. Prof. * MOORE, Mrs. B. CLARK Res. Assoc. BARTH, L. G. Prof. BARTH, Mrs. L. JAEGER Res. Assoc. * BENNETT, D. Res. Assoc. 166 U.S.A. (N.Y.) * CORNER, M. A. New York 32, Columbia Univ., Coll. of Phys. & Surgeons, Dept. of Anat. COPENHAVER, W. M. Prof. SHEN, S. C. MURRAY, Mrs. M. R. Dept. of Radiol., Radiol. Res. Lab. ROSSI, G. Prof., Chairman * RUGH, R. Assoc. Prof. QUIMBY, E. Dept. of Pathol. McKAY, D. G. New York 53, New York Univ., Univ. Coll., Dept. of Biol. * DALTON, H. C. New York 58, Fordham Univ., Biol Lab. * WOLSKY, A. Prof. (Exper. Embryol.) * LUDWIG, D. Prof. (Physiol.) New York 61, Eastchester Road, Albert Einstein Coll. of Med., Dept. of Anat. * WAELSCH, Mrs. S. GLUECKSOHN Prof. * MALAMED, S. SMITH, L. J. MOSER, Miss G. Poughkeepsie, Vassar Coll., Dept. of Zool. PATERSON, Miss M. C. Rochester 20, Univ. of Rochester, Coll. of Arts & Sci.. Dept. of Biol. * HOLTFRETER, J. K. F. Prof. * CASPARI, E. W. Prof. * MUCHMORE, W. Prof. School of Med. and Dentistry, Dept. of Radiation Biol. * BERG, G. G. Schenectady 8, Union Coll., Dept. of Biol. CLARK, L. B. * RAPPAPORT, R. Jr. Springville, Roswell Park Memorial Inst., Biol. Station * CAIRNS, J. M. Syracuse 10, State Univ. of New York. Med. Coll., Dept. of Anat. U.S.A. (N.C.) * ARMSTRONG, P. B. Prof., Chairman * YNTEMA, C. L. Prof. * SPOFFORD, W. R. Assoc. Prof. * HAMMOND, W. S. Assoc. Prof. VINCENT, W. S. Tuckahoe 7, Westchester County, Wellcome Research Labs., Section of Biol. * BIEBER, S. Utica, Utica Coll. of Syracuse Univ., Div. of Biol, and Physical Sciences * MANNER, H. W. Chairman NORTH CAROLINA (N.C.) Beaufort, Duke Univ., Marine Lab. COSTLOW, J. D. Jr. Chapel Hill, Univ. of N. Carolina, Dept. of Zool. * COSTELLO, D. P. Kenan Prof. * LEHMAN, H. E. Prof. * HENLEY, Miss C. Res. Assoc. * LEHMAN (YOUNGS), Mrs. L. M. School of Med., Dept. of Anat. DOSSEL, W. E. Durham, Duke Univ., Dept. of Zool. HARGITT, G. T. Prof. (Emer.) * HORN, E. C. Prof., Chairman * BOOKHOUT, C. G. Prof. * GREGG, J. R. Prof. Med. Center, Dept. of Anat. * DUKE, K. L. Raleigh, 353 Gardner Hall, North Carolina State Coll., Genet. Dept. * GROSCH. D. S. OHIO Cincinnati 19, Eden Ave., Univ. of Cincinnati, Coll. of Med., Dept. of Anat. CRAFTS, R. C. Chairman BINHAMMER, R. T. HOAR, R. M. (no embryol. work in progress) Cincinnati 20, Univ. of Cincinnati, Children's Hosp. Research Found. U.S.A. (Pa.) * WARKANY, J. Cleveland 6, Western Reserve Univ., School of Med., Dept. of Anat., Developm. Biol. Center SCHNEIDERMAN, H. A. Dir. SINGER, M. Prof. * LOCKE, M. Columbus 10, Ohio State Univ., Dept. of Veter. Anat. * VENZKE, W. G. DIESEM, Ch. GROSSMAN, J. k ANDRES, M. Y. HOROWITZ, A. Gambier, Kenyon Coll. * THORNTON, C. S. * YOW, F. W. Oberlin, Oberlin Coll. * FILOSA, M. F. Oxford, Miami Univ., Dept. of Zool. * HARRISON, J. R. OKLAHOMA (Okla.) Norman, Univ. of Oklahoma, Dept. of Zool. * GOFF, R. A. Assoc. Prof. Oklahoma City, 801 N.E., 13th St., Univ. of Oklahoma, School of Med., Dept. of Anat. LACHMAN, E. Chairman * RICHTER, K. M. Prof. * LHOTKA, J. F. OREGON (Ore.) Portland 2, Reed Coll., Biol. Dept. * RUBEN, L. N. PENNSYLVANIA (Pa.) Bryn Mawr, Bryn Mawr Coll., Dept. of Biol. GARDINER, Miss M. Dir. * OPPENHEIMER, Miss J. M. Prof. Carlisle, Dickinson Coll., Biol. Dept. * OGREN, R. E. Haverford, Haverford Coll., Dept. of Biol. LOEWY, A. G. Chairman * FINGER, I. Asst. Prof. * GREEN, Mrs. E. UFFORD Res. Assoc. Philadelphia 4, Univ. of Pennsyl- vania, Biol. Div. 167 U.S.A. (R.I.) BILLINGHAM, R. E. BOREI, H. G. ERICKSON, R. O. GREEN, P. B. * JAFFE, L. F. KING, T. NELSEN, O. E. TELFER, W. H. WILD, C. School of Med., Dept. of Anat. * HOLTZER, H. Assoc. School of Dentistry, Dept. of Histol. & Embryol. * WILDE, Ch. E. Jr. Prof. BAUMANN, Miss L. LEUENSON, G. Philadelphia 4, 36th St. at Spruce, Wistar Inst. KING, Miss H. D. Prof. BILLINGHAM, R. E. Philadelphia 11, Fox Chase, 7701 Burholme Ave., Lankenau Hosp Res. Inst, and Inst, for Cancer Res., Dept. of Embryol. TALBOT, T. Dir. of Inst. * KING, T. J. Head Dept. Embryol. * SUBTELNY, S. Res. Assoc. * DIBERARDINO, Miss M. Res. Assoc. * McKINNELL, R. G. MINTZ, Miss B. Assoc. Mem. Philadelphia 22, Temple Univ., Biol. Dept. * HILFER, S. R. NIU, M. C. Pittsburgh 13, Univ. of Pittsburgh, School of Med., Dept. of Anat. LANSING, A. I. Chairman * DONALDSON, J. C. Prof. (Emer.) * HUMPHREY, Miss T. Prof. * CAUNA, N. Prof. University Park, Pennsylvania State Univ., Dept. of Zool. and Entomol. * RUTSCHKY, C. W. RHODE ISLAND (R.L) Kingston, Univ. of Rhode Island, Dept. of Zool. 168 U.S.A. (Tex.) * HARTUNG, E. W. Prof., Head of Dept. Providence 12, Brown Univ., Arnold Biol. Lab. * WILSON, J. W. Prof., Head of Dept. * CHASE, H. B. Prof. * EDDS, M. V. Jr. * WEISZ, P. B. Prof. * GOSS, R. J. Asst. Prof. TENNESSEE (Tenn.) Clarksville, Austin Peay State Coll., Dept. of Biol. * RAWLS, J. M. Knoxville 16, Univ. of Tennessee, Dept. of Zool. and Entomol. * FRASER, R. C. Memphis 3, Univ. of Tennessee, Fac. of Biol. Sci., Med. Units Div., Dept. of Anat. * ALDEN, R. H. Chief of Div. * ROBERTSON, G. G. Prof. * FITZGERALD, L. R. Assoc. Prof. * COHN, S. A. Assoc. Prof. * CORLISS, C. E. Asst. Prof. * BUCHANAN, G. D. Instr. * McMURRAY, Mrs. V. M. Memphis 12, Southwestern at Mem- phis, Biol., Dept. * AMY, R. L. Oak Ridge, P.O. Box Y, Oak Ridge National Lab., Biol. Div. * BORSTEL, R. C. von POPP, R. A. * YAMADA, T. Prof. * KARASAKI, S. * PRESCOTT, D. Mammalian Genet, and Developm. Section RUSSELL, W. L. Head RUSSELL, Mrs. L. BRAUCH KENNEDY, Miss S. Asst. TEXAS (Tex.) Austin 12, Univ. of Texas, Dept. of Zool. * JACOBSON, A. G. WELCH, R. M. RESCH, Miss K. Res. Asst. U.S.A. (Vt.) Galveston, Univ. of Texas, Med. Branch, Dept. of Anat. DUNCAN, D. Dir. * SINCLAIR, J. G. Prof. BLOUNT, R. F. Prof. * McNUTT, C. W. Prof. * WALKER, B. E. * O'STEEN, W. K. Houston 25, P.O. Box 20068, Univ. of Texas Dental Branch, Dept. of Anat. GONZALEZ, F. Asst. Prof. VERMONT (Vt.) Burlington, Univ. of Vermont, Coll. of Med., Dept. of Anat. STULTZ, W. A. VIRGINIA (Va.) Charlottesville, Univ. of Virginia, Dept. of Biol. * BODENSTEIN, D. Prof., Chairman * DENT, J. N. Prof. School of Med., Dept. of Anat. SPEIDEL, C. C. Prof. * McKEEHAN, M. S. * DECK, J. D. WASHINGTON (Wash.) Seattle 5, Univ. of Washington, Dept. of Zool. * TARTAR, V. WHITELEY, A. H. Prof. School of Med., Dept. of Anat. Argentina * ROOSEN-RUNGE, E. C. BOYDEN, E. A. Research Prof, of Anat. * BLANDAU, R. J. BODEMER, C. W. Fisheries Center * WELANDER, A. D. WEST VIRGINIA (W.Va.) Morgantown, Univ. of West Vir- ginia, Dept. of Biol. * NORMAN, C. * GOLDBERG, E. Med. Center, School of Med., Dept. of Micro-Anat. * REYER, R. W. WISCONSIN (Wis.) Madison 6, Univ. of Wisconsin, Dept. of Zool. AUERBACH, R. Bardeen Med. Labs., Dept. of Anat. MORTENSEN, O. A. Prof., Chairman * MOSSMAN, H. W. Prof. * ORSINI, Mrs. M. WARD * ANDERSON, J. W. * OWERS, N. O. Milwaukee 3, Marquette Univ., Dept. of Biol. * SAUNDERS, J. W. Prof., Chairman * O'BRIEN, J. P. Prof. Dept. of Physiol. RIECK, A. F. CENTR. AMERICA MEXICO Mexico D.F., Ciudad Instituto de Biologia LLAMAS, R. Dir. Universitaria, SAMANO BISHOP, Miss A. Mexico 7, D.F., Ave. Cuauhtemoc 300, Inst. Nac. de Cardiol., Dept. of Embryol. * CRUZ de LOSADA, Mrs. M. V. de la S. AMERICA ARGENTINA Buenos Aires, Paraguay 2155, Fac. de Med., Inst, de Anat. Gener. y Embriol. * NARBAITZ, R. Cordoba, Casilla de Correo 362, Univ. Nac. de Cordoba, Inst, de Biol. Celular * RINALDINI, L. M. Tucuman, Casilla de Correos 193, 169 Brazil India Inst, de Biol. Gener. y Embriol. Exper. * BARBIERI, F. D. Prof, titul. * BRAUCKMAN, Miss E. S. * LEGNAME, A. H. BRAZIL Belo Horizonte, M.G., Caixa Postal 253, Univ. de Minas Gerais, Fac. Filos., Inst, de Biol. * SCHREIBER, G. Prof. Zool. * SALLES, J. M. de * MONTEIRO, W. * MELUCCI, N. Recife, Caixa Postal N. 616, Univ. do Recife, Fac. de Med., Cadeira de Histol. e Embriol. ^ MENDONgA, H. Prof., Head Sao Paulo, Univ. de Sao Paulo, Fac. de Med. de Ribeirao Preto LISON, L. Prof. AZOUBEL, R. Sao Paulo, Univ. de Sao Paulo, Fac. de Med., Dept. Histol. y Embriol. JUNQUEIRA, L. C. Prof. (no embryol. work in progress) CEYLON Colombo 8, Kynsey Rd., Univ. of Ceylon, Fac. of Med., Dept. of Anat. CHANMUGAM, P. K. Prof., Dir. ANANDARAJA, S. CHINA Peking (53), Haitien, Acad. Sinica, Inst, of Zool. CHANG, Ch. Y. Shanghai, 320 Yo Yang Road, Acad. Sinica, Inst, of Exper. Biol., Lab. of Developm. Physiol. PAI, S. Dir. of Inst. TUNG, T. C. Vice Dir. CHUANG HSIAO HUI Res. Fellow YAO, T. Res. Fellow HONG KONG Hong Kong, Univ. of Hong Kong, Dept. of Zool. 170 Dept. of Anat., Section of Neuroanat. * ERHART, E. A. CHILE Santiago, Av. Irarrazaval 849, Dept. de Med. Exper. del Servicio Nacional de Salubridad ^ LIPSCHUTZ, A. Prof., Dir. Santiago, Zanartu 1042, Univ. de Chile, Fac. de Med., Inst, de Biol. ,,Juan Noe", Catedra de Embriol. * BADiNEZ, O. Prof. URUGUAY Montevideo, Fac. de Med., Dept. de Histol. y Embriol. BUNO, W. Prof., Dir. VENEZUELA Merida, Univ. de Los Andes, Fac. de Ci. Med., Dept. of Anat. RENGEL, S. L. Prof., Head Dept. of Embryol. * KLEISS, E. Prof., Head * SIMONSBERGER, P. Asst. ASIA * STRAHAN, R. INDIA Atnritsar, Punjab, Med. Coll., Dept. of Anat. * JIT, I. SINGH, B. Asst. Prof. MUCKERJEE, R. N. Dem. NAR, R. D. Dem. AHUJA, Miss U. K. Dem. Bangalore 1, Univ. of Mysore, Central Coll., Dept. of Zool. * SRINIVASACHAR, H. R. Baroda 2, Univ. of Baroda, Dept. of Zool. * GEORGE, J. C. Prof., Head * SHAH, R. V. Reader IYPE, P. Th. Calcutta 6, 4 Cornwallis Square, Scottish Church Coll., Dept. of Biol BANERJEE, B. Indonesia Japan Calcutta 12, College Street, Presidency Coll., Dept. of Zool. * MOOKERJEE, S. Prof., Head * BOSE, A. Lect. * GANGULY, B. Hon. Res. Fellow * SANYAL, S. Res. Fellow * ADHIKARI, S. Guest worker * SINHA, A. K. Guest worker * MUKHERJI, Miss D. Res. Fellow * NURJEHAN, Miss B. Guest worker * WAIDYASEKARA, L. Res. Fellow * MOOKERJEE, Mrs. A. Hon. Res. Fellow * LAHIRI, D. Hon. Res. Fellow * ALAMELU, Mrs. M. G. Guest worker * DUTTA, J. Res. Fellow * BANERJEE, S. Res. Fellow Calcutta 19, 35 Ballygunje Circular Road, Calcutta Univ., Dept. of Zool., Cell-Research Unit GANGULY, D. N. SARKAR, D. N. BANARJEE, P. DEV, D. BANARJEE, M. BOSE, B. Calcutta 26, 37 S. P. Mookerjee Road, Chittaranjan Nat. Cancer Res. Center * BRAHMA, S. K. * NEOGY, R. K. Darjeeling, Darjeeling Government Coll., Biol. Lab. * DASGUPTA, B. Delhi 6, Univ. of Delhi, Dept. of Zool. * PRASAD, M. R. N. * RAO, S. R. V. Madurai, Madurai Med. Coll., Dept. of Anat. KATHIRESAN, S. Poona 7, Univ. of Poona, Zool. Dept. * MULHERKAR, Miss L. Head INDONESIA Bandung, Djl. Ganega 10, Inst, of Technol., Dept. of Chemistry and Biol. TISNA-AMIDJAJA, D. A. Djakarta, Salemba No. 6, Univ. Indonesia, Fakultas Kedokteran, Bag. Ilmu Djaringan Tubuh SUKIRNA, M. Prof. ISRAEL Jerusalem, Hebrew Univ., Dept. of Zool. HAAS, G. Prof., Head STEINITZ, H. EYAL (GILADI).Mrs. H. SHULOV, A. BOSCHWITZ, Miss B. D. Hadassah Med. School, Dept. of Anat. * GITLIN, G. * NEBEL, L. A. Petah-Tikva, Beilinson Hosp. * BER, A. Prof. Endocrinol. SINGER, R. Rehovoth, Weizman Inst, of Sci., Dept. of Exp. Biol. FELDMAN, M. YAFFE, D. JAPAN Aikawa, Sado Island, Sado Marine Biol. Station * IWASAWA, H. Akkeshi, Hokkaido Univ., Akkeshi Marine Biol. Station * IWATA, F. Anjo-City, Nagoya Univ., Fac. of Agricult, Dept. of Animal Hus- bandry, Embryol. Div. * HASEGAWA, M. Lect. Asamushi, Aomoro Pref., Asamushi Marine Biol. Station of Tohoku Univ. * FUKUSHI, T. F. Chiba, Kurosuna-cho, Nat. Inst, of Radiol. Sci., Div. of Genetics * SHIOMI, T. Fukuoka, Kyushu Univ., Fac. of Sci., Dept. of Biol. * KAWAKAMI, I. Prof. * KAWAKAMI, Mrs. K. I. 171 Japan Japan * MIFUNE, S. * YAMANA, K. * MATSUMOTO, A. * IJEIRI, Miss S. * IKENAGA, T. Fac. of Med., Dept. of Anat. MORI M. Prof. SEO, Sh. Fac. of Agricult., Zool. Lab. * UCHIDA, T. A. Fukuoka, Seinan Gakuin Univ. * HIRAIWA, Y. K. Fukushima, Fukushima Med. Coll., Dept. of Anat. * NAKAMURA, I. Prof. Gifu, Nagara, Gifu Univ., Dept. of Liberal Arts and Education, Lab. for Biol. CHISHIMA, K. Prof, of Biol. Gifu, Kitanomachi, Gifu Pref. Med. School, 1st Dept. of Anat. SETOGUTI, T. Hakodate, Hokkaido Univ., Fac. of Fisheries, Dept. of Biol., Lab. of Fresh-water Fish Culture * YAMAMOTO, K. Prof. KUBO, T. Asst. Prof. TAKANO, K. Asst. Lab. of Physiol. & Ecol. * HAMANO, S. Asst. Prof. MOGAMI, M. Res. Asst. Hirakata, Osaka Pref., Kansai Med. School, Biol. Lab. * IKUSHIMA, N. Hirakata City, Osaka-Pref., Osaka Dental Coll. * SHIN-IKE, T. Hiroshima, Higashisenda-cho, Hiroshima Univ., Fac. of Sci., Zool. Lab. * KAWAMURA, T. K. Prof. * SAMBUICHI, H. * NADAMITSU, S. N. * KATASHIMA, R. K. Ikeda, Osaka-Pref., Osaka Liberal Arts Univ., Lab. of Morphol. * NAKAMURA, O. N. Prof. * TAHARA, Y. T. Asst. Prof. Kanazawa, Univ. of Kanazawa, Fac. of Sci., Zool. Inst. * KIDO, T. Asst. Prof. * KISHIDA, Y. Instr. Kobe, Kobe Univ., Biol. Inst. FUJII, S. Prof. KAWABE, M. Asst. Prof. KIMOTO, Y. Asst. KANEHISA, T. Asst. Kobe, Okamoto, Konan Univ., Dept. of Lit. and Sci., Biol. Lab. * TAKAYA, H. Prof. * KAJI, S. Asst. Prof. * MASUI, Y. Lect. * WATANABE, T. Res. Stud. * INOUYE, I. Res. Stud. Kochi, Kochi Univ., Fac. of Education KOMATSU, Miss T. Prof., Dir. OIKAWA, Miss I. Asst. Prof. Kofu, Yamanashi Univ., Biol. Dept. * SIRAKAMI, K. I. Kumamoto-shi, Kumamoto Univ., Fac. of Sci., Dept. of Biol. * ITO, S. * YOSHIKURA, M. * SASAKI, N. Kyoto, Sakyo-ku, Univ. of Kyoto, Fac. of Sci., Zool. Inst. * IMAIZUMI, T. Lab. of Embryol. and Exp. Morphol. * ICHIKAWA, M. Prof., Dir. * KATO, M. Asst. Prof. * OKADA, T. S. Lect. * NISHIITSUTSUJI (UWO), Mrs. J. Asst. * OKADA, Mrs. E. W. * ISHIZAKI, H. Asst. * SAITO, T. Grad. Stud. Dept. of Anat. * NISHIMURA, H. Prof. Kyoto, Shimogamo, Kyoto Pref. Univ., Biol. Lab. NAKANE, T. Asst. Prof. Zool. (no embryol. work in progress) Kyoto, Kyoto Univ., School of Med., Dept. of Exp. Radiol. * HORIKAWA, M. Maebashi, Gunma Univ., Anat. Inst. TAKISAWA, A. Prof. SENO, T. Instr. 172 Japan Inst, of Endocrinol. HANAOKA, K. I. Prof. INOUE. S. Asst. Prof. IMAI. K. Asst. NONAKA, T. Matsuyama, Ehime Univ., Biol. Inst. * SAWADA, N. Misaki, Kanagawa-ken, Univ. of Tokyo, Misaki Marine Biol. Station * HIRAMOTO, Y. * KANATANI, H. Morioka, Iwate Univ., Fac. of Agr., Inst, of Applied Entomol. * MIYA, K. Nagasaki, Nagasaki Univ., Fac. of Med., Anat. Dept. SATOH, J. Prof. KOONO, J. Asst. Nagoya, Chikusa-ku, Nagoya Univ , Fac. of Sci., Biol. Inst. * SATO, T. Prof., Dir. * YAMAMOTO, T. Prof. * HAYASHI, Y. Asst. Prof. * KAJISHIMA, T. Asst. Prof. NAKANO, E. Lect. * HISHIDA, T. Asst. * AKETA, K. Asst. * TOMITA, H. * KATO, M. Asst. * EGUCHI, G. Asst. * TAKEUCHI, K. * MATSUDA, Mrs. N. * OHNO, S. Res. Inst, of Environmental Medicine * MURAKAMI, U. * KAMEYAMA, Y. * MAJIMA, A. * ANDO, S. Nara, Kitanoya-Nishi-machi, Nara Women's Univ., Fac. of Sci., Zool. Inst. ARIMA, Sh. Nishinomiga-City, Hyogo Pref., Kwansei Gakuin Univ., Biol. Lab. OJIMA, Y. Osaka, Ten-noji-ku, Osaka Liberal Arts Univ., Biol. Lab. * SUGINO, H. Prof. Japan Osaka, Sumiyoshi-ku, Sugimoto-cho. Osaka City Univ., Fac. of Sci.. Dept. of Biol. * ASAYAMA, S. Prof. * AMANUMA, A. Lect. * MIYAMORI (YAMAMOTO), Mrs. H. Asst. * KOTANI, M. Asst. * FURUSAWA, M. Asst. Osaka, Fukushima-ku, Dojima-ha- madori, Osaka Univ., Med. School. Inst, for Cancer Res. * KURU, M. HUKUI, T. HIGASHI, H. Sapporo, Hokkaido Univ., Fac. of Sci., Zool. Inst. * MAKINO, S. Prof. * ICHIKAWA, A. Prof. MOMMA, E. Asst. Prof. * KANOH, Y. Asst. Prof. * AOTO, T. Asst. Prof. * YAMAMOTO, T. S. Asst. SASAKI, M. Asst. School of Med., Dept. of Physiol. * TAKAHASHI, H. Sendai, Katashira-cho, Tohoko Univ., Inst, of Biol., Lab. of Embryol. MOTOMURA, I. Prof., Dir. Toba, Mie-ken, Sugashima-cho, Nagoya Univ., Sugashima Marine Biol. Station * SUGIYAMA, M. Dir. * ISHIKAWA, M. Asst. * KOJIMA, M. K. Asst. Tokushima, Tokushima Univ., School of Med., First Dept. of Anat. and Komatsujima Station for Exper. Biol. * TAKASHIMA, R. Prof. * KATSURA, Sh. Asst. Prof. Tokyo, Bunkyo-ku, Tokyo Univ. Fac. of Sci., Zool. Inst. TAKEWAKI, K. Prof., Dir. * FUJII, T. Prof. KINOSITA, H. Prof. * ISHIDA, J. Prof. KOBAYASHI, H. Asst. Prof. UTIDA, S. Asst. Prof. Fac. of Med., Dept. of Anat. 173 Lebanon Turkey * TAKATA, C. Tokyo, Bunkyo-ku, Yushima 3, Tokyo Med. and Dental Univ., Dept. of Anat. * NIIZIMA, M. KITAMURA, H. WATANABE, K. HIRAKOW, R. HASHIMOTO, M. HIRAMOTO, Y. Tokyo, Bunkyo-ku, Otsuka-Kubo- machi 24, Univ. of Education, Inst, of Zool. * OKA, H. Prof., Head USUI, M. * SEKIGUCHI, K. * WATANABE, H. Tokyo, Bunkyo-ku, Ochanomizu Univ., Fac. of Sci., Dept. of Biol., Embryol. Section * DAN, Mrs. J. C. * KINOSHITA, S. Tokyo, Daito-ku, Ueno Park, National Museum of Nat. Sci. * OKADA, Y. K. Prof., Dir. Tokyo, Itabashi-ku, no. 30 Ooya- guchi-kamimachi, Nihon Univ., Med. Fac, Anat. Inst. * NAKAYAMA, T. KITAGAWA, T. SATO, Y. TEZUKA, M. SHIMAMURA, J. Tokyo, Meguro-ku, Komaba, Univ. of Tokyo, Coll. of Gener. Education, Biol. Inst. * OZEKI, K. O. Tokyo, Setagaya-ku, Tokyo Metro- politan Univ., Fac. of Sci., Dept. of Biol., Embryol. Section * DAN, K. Prof., Head of Section * YANAGISAWA, T. Asst. Prof. * OKAZAKI, Miss K. Res. Asst. * YONEDA, M. Res. Asst. * SAKAI, H. Res. Asst. * YAJIMA, H. * SAKAI, Mrs. T. Tokyo, Shinjuku, Hyakunin-cho, 400, Res. Inst, for Nat. Resources MAWATARI, Sh. 174 Tokyo, Suginami-ku, Koenii, Sericultural Exper. Station, Dept. of Physiol. * TAKAMI, T. * ITO, T. Toyama, Hasumachi 22, Toyama Univ., Fac. of Liberal Arts, Biol. Inst. * HORI, R. Tsu-shi, Mie Prefect. Univ., Dept. of Anat. * MIKAMI, Y. OHASHI, T. * TAKANO, K. T. Fac. of Fisheries, Zool. Inst. SHIINO, S. M. OOISHI, Miss S. (no embryol. work in progress) Urawa, Saitama Univ., Dept. of Biol. * ISHIHARA, K. Yokohama, Hiyoshi, Keio Univ., Biol. Lab. * MORI, Y. Prof., Head * MORI, H. Prof. * HAMA, T. Prof. * GOTO, T. Asst. Prof. * OBIKA, M. Asst. * MATSUMOTO, J. Asst. * ENDO, Y. Lect. * KATAKURA, Y. Lect. k OSANAI, M. Asst. LEBANON Beirut, American Univ., Dept. of Biol. * BUTROS, J. M. Assoc. Prof. PAKISTAN Lahore, Government College, Dept. of "Zool. * ISLAM, A. * ARSLAN, M. TAIWAN (Formosa) Taipei, National Defense Med. Center, Dept. of Biomorphics * HSU (LIANG), Mrs. C. Y. TURKEY Ankara, Ankara Univ.. Veter. Fac, Inst, of Histol. and Embryol. Australia (N.S.W.) ERENQIN, Z. Prof. HASSA. O. Doc. (no embryol. work in progress) Med. Fac. Inst, of Histol. and Embryol. Austria MUTLU, Mrs. K. Prof., Dir. (no embryol. work in progress) Izmir, Bornova, Ege Univ., Tip Fak., Morfol. Enst. * BUYuKoZER, Miss I. AUSTRALIA AUSTRALIA NEW SOUTH WALES Armidale, 5 N.,New England Univ., Dept. of Zool. * STOCK, A. Prof. * O'FARRELL, A. F. Prof. * MURRAY, P. D. F. Reader * DE BAVAY, }. M. Lect. * MORGAN, Miss J. A. Res. Asst. * GILES, E. T. Prospect, Great Western Highway, (P.O. Box 144, Parramatta), Div. of Anim. Physiol., Commonwealth Sci. and Industr. Res. Org., Ian Clunies Ross Anim. Res. Lab. Mcdonald, i. m. off. in Charge * LYNE, A. G. Sen. Res. Off. * SCHINCKEL, P. G. Princ. Res. Off. * SHORT, B. F. Princ. Res. Off. * ALEXANDER, G. Princ. Res. Off. * BRADEN, A. W. H. Princ. Res. Off. Sydney, Kensington, P.O. Box I, Univ. of New South Wales, School of Biol. Sci., Dept. of Zool. * STEPHENSON, Mrs. E. M. School of Anat. * O'BRIEN, B. R. A. Sydney, Univ. of Sydney, Dept. of Histol. and Embryol. STUMP, C. W. Dir. CLELAND, K. W. REID, B. L. * SULLIVAN, G. E. * LENNEP, E. W. van Dept. of Zool. * STEPHENSON, N. G. * ANDERSON, D. T. QUEENSLAND Yeerongpilly, C.S.I.R.O., Veter. Parasitol. Lab. * ROULSTON, W. J. SCHUNTNER, C. A. SOUTH AUSTRALIA Adelaide, Univ. of Adelaide, Dept. of Anat. and Histol. * PACKER, A. D. * DETH, J. H. M. G. van TASMANIA Hobart, Univ. of Tasmania, Biophysics Lab. * GULLINE, Miss H. F. VICTORIA Parkville, N. 2, Univ. of Melbourne Anat. Dept. * LAVARACK, J. O. NEW ZEALAND Christchurch, Canterbury Univ., Dept. of Zool. * STOUT, Miss V. M. Dunedin, Univ. of Otago, Dept. of Zool. * BREWIN, Miss B. I. MARPLES, B. J. Prof. Med. School, Dept. of Anat. ADAMS, W. E. Prof. * ADAMS SMITH, W. N. EUROPE AUSTRIA Graz, Universitatsplatz 4, Histol. -embryol. Inst, der Univ. BURKL, W. Prof., Vorstand (no embryol. work in progress) Innsbruck, Tyrol, Miillerstr. 59, Histol. -embryol. Inst, der Univ. SAUSER, G. Prof., Vorstand 175 Belgium Czechoslovakia OLBRICH, E. Asst. Wien IX, Wahringerstr. 13, Anat. Inst, der Univ. Wien * HAYEK, H. Prof., Dir. * ZENKER, W. KRAUSE, W. PLATZER, W. * SALSER, G. M. BELGIUM Bruxelles, 50 Av. F. D. Roosevelt, Univ. libre de Bruxelles, Fac. des Sci., Inst, de Zool. Torley- Rousseau, Lab. de Zool. syst. et de Biol. anim. * BRIEN, P. L. Prof., Dir. * HERLANT (MEEWIS), Mrs. H. Prof. * RASMOND, R. Chef de Travaux * BOUILLON, J. Chef de Travaux PERARD, Mrs. E. Technic. Bruxelles, 97 Rue aux Laines, Fac. de Med. de l'Univ., Lab. d'Anat. et d'Embryol. * DALCQ, A. M. Prof., Head of Dept. * PASTEELS, J. J. Prof. * MULNARD, J. G. Charge de cours * MILAIRE, J. Asst. * POURTOIS, M. Bruxelles-Auderghem, 1850 Chaus- see de Wavre, Univ. libre de Bruxel- les, Lab. de Morphol. anim. * BRACHET, J. L. A. Prof., Dir. * FICQ, Mrs. A. A. Asst. * BALTUS, Miss E. Asst. * VANDERHAEGHE, Mrs. F. Asst * TENCER, Miss R. * BIELIAVSKY, N. Asst. Gent Bylokekaai 1 , Univ. of Gent, Fac. of Med., Lab. of Anat. * FAUTREZ, J. C. Prof., Dir. * FAUTREZ (FIRLEFYN), Mrs. N. J. * VAKAET, J. C. * ANTEUNIS, Miss A. H. J. * COLLE (VAN DE VELDE), Mrs. A. 176 VAN DE KERCKHOVE, D. Liege, Quai Ed. Van Beneden 22, Inst. Zool. Ed. van Beneden, Dept. de Morphol. des Chordes * DAMAS, H. F. C. Prof. * DENIS, H. A. Asst. * MAGIS, N. Asst. Liege, 20 Rue de Pitteurs, Univ. de Liege, Fac. de Med., Lab. d'Histol. et d'Embryol. * CHEVREMONT, M. J. J. Prof., Chef du Dept. FREDERIC, J. Agr. et Charge de Cours-Assoc. CHEVREMONT (COMHAIRE), Mrs. S. Chef de Travaux LIEBECQ (HUTTER), Mrs. S. Chef de Travaux BAECKELAND, E. Conservateur BASSLEER, R. Asst. MATAGNE (DHOOSSCHE), Mrs. Fr. Asst. Louvain, 71 Rue de Namur, Univ. de Louvain, Inst, de Zool., Lab. d'Embryol. VANDEBROEK, G. Prof., Dir. Louvain, 38 Rue des Recollets, Univ. de Louvain, Inst. d'Anat. CAMPENHOUT, E. van Prof., Dir. BULGARIA Sofia 6, 27 Blvd. Hristo Botev, Med. Res. Inst. * ROUSSEV, G. K. Sofia 13, Blwd. Lenin N. 2, Univ. of Sofia, Med. School, Inst, of Gener. Biol. * DIMITROVA, Miss A. I. Assoc. Prof. CZECHOSLOVAKIA Bratislava, Zelezna Studienka 806, Lab. of Fishery Sci. * BALON, E. K. Olomouc, Fierlingerova ul., Palacky Univ., Fac. of Med., Inst, of Histol. and Embryol. OBRUCNIK, M. Dir. (no embryol. work in progress) Denmark Plzeri, Karlovarska 48, Charles Univ., Fac. of Med., Inst, of Histol. and Embryol. * SLABY, O. Prof., Dir. * SLIPKA, J. * MATEJKA, M. Praha 2, Albertov 4, Univ. Karlovy, Embryol. ustav lekafske fak. * FRANKENBERGER, Z. Prof., Dir. * VACEK, Z. Chief Asst. * LOJDA, Z. Asst. * KRAUS, R. Asst. Praha 2, Vinicna 7, Charles Univ., Zool. Inst., Dept. of Gener. and Exp. Zool. * SLADEcEK, F. Prof., Dir. * ROMANOVSKY, A. Chief Asst. * NEDVlDEK, J. Asst. * STEFANOVA, Miss Z. Asst. Praha 2, U nemocnice 3, Charles Univ., Dept. of Anat. * LEMEZ, L. * RYCHTER, Z. * DOSKOCIL, M. Doc. * JELINEK, R. Asst. * CIHAK, R. Praha 6, Na cvicisti 2, Czechoslovak Acad, of Sci., Inst, of Biol. NOVAK, V. J. A. Dept. of Exp. Biol, and Genet. * HASEK, M. Dir. VOJTISKOVA, M. Adj. Dir. HAsKOVA, V. HORT, J. HRABA, T. CHUTNA, J. LENGEROVA, A. RYCHLIKOVA, M. KOLDOVSKY, P. SVOBODA, J. Inst, of Physiol. * ZELENA, Mrs. J. DENMARK Copenhagen 0, Universitets- parken 3, Inst, for Aim. Zool. BR0NDSTED, H. V. Prof., Dir. France HOLST CHRISTENSEN, P. Amanuensis PEDERSEN, K. J. Asst. Inst, of Comp. Anat. * WINGSTRAND, K. G. Prof. * N0RREVANG, A. Copenhagen N, 16 Tagensvej, Biol. Inst, of the Carlsberg Foundation * ZEUTHEN, E. Prof. * PLESNER, P. * HAMBURGER, K. * RASMUSSEN, L. ENGLAND (Vid. UNITED KINGDOM) FINLAND Helsinki, Arkadiankatu 7, Univ. of Helsinki, Dept. of Physiol. Zool. SUOMALAINEN, P. Prof., Dir. * TOIVONEN, S. I. Prof. * KUUSI, Miss T. K. * SAXEN, l. o. * VAINO, E. T. * LEIKOLA, A. H. A. Helsinki, Univ. of Helsinki, Fac. of Med., Anat. Inst. HJELMMAN, G. Prof., Dir. MUSTAKALLIO, M. Prosector LYDECKEN, K. * RAPOLA, M. H. J. Turku, Univ. of Turku, Dept. of Zool. * KOHONEN, P. J. FRANCE Bordeaux, Univ. de Bordeaux, Fac. de Med., Lab. d'Histol. MAYER, G. Prof. STOLL, R. MARAUD, R. Clermont-Ferrand, 1 Avenue Ver- cingetorix, Lab. de Zool. * LUTZ, H. Prof. * LUTZ (OSTERTAG), Mrs. Y. Chargee de Recherches * GOMOT, L. Attache de Recherches * DUFAURE, J. P. Asst. Gif-sur-Yvette (S. et O.), Lab. de Genet, evolutive du C.N.R.S. 177 France * CHARNIAUX (COTTON), Mrs. H. BONNENFANT, Miss J. Lyon, 16 Quai Claude Bernard, Fac. des Sci., Lab. de Zool. Exper. * NIGON, V. Prof., Dir. * LEGAY, J. M. M.Conf. * BRUN, J. L. M.Asst. * DAVID, J. R. M.Asst. * DAILLIE, J. ChefdeTrav. * FOURCHE, J. Asst. * GUERRIER, P. Asst. * NONNENMACHER, Miss J. Asst * PERDRIX, Miss S. Asst. * NEULAT, Miss M. M. Asst. * DALMON, J. Asst. * PERRAYON, R. Asst. * De REGGI, L. M. Asst. * FLECHON, J. Asst. * NOVEL (REROLLE), Mrs. M. Att. Rech. * SILBERZAHN, P. * MERLE, Miss S. * HAOUR, Miss F. MARGOTTON, Miss N. Marseille, Place Victor Hugo, Lab. de Biol, gener. de la Fac. des Sci. et Stat, marine d'Endoume (Marseille) * ABELOOS, M. Prof., Dir. CHANDEBOIS, Miss R. THOUVENY, Y. CASANOVA, G. CRESP, J. Montpellier, Univ. de Montpellier, Fac. de Med., Lab. d'Histol. * SENTEIN, P. Prof. agr. Fac. des Sci., Lab. de Physiol. Anim. * ASSENMACHER, I. A. Prof. Nancy (Meurthe & Moselle), 31 Rue Lionnois, Fac. de Med., Lab. d'Histol. LEGAIT, E. Prof., Dir. GRIGNON, G. del. Agr. (no embryol. work in progress) Lab. d'Embryol. * DOLLANDER, A. Prof., Dir. * CURY, G. Attache de Rech. * MARCONNET, R. Asst. 178 France * GASSIOLE, Mrs. D. Asste. * BEYLSTEIN, J. Monit. * FRITSCH, J.-P. Monit. * AUTELIN, Miss R. Collab. techn. Nancy (Meurthe & Moselle), 15 Place Carnot, Inst, de Physiol. Gener. * GAYET, J. F. Prof. * SCHWANDER, J. Asst. * BONICHON, Miss A. Nogent sur Marne (Seine), 49bis Avenue de la Belle-Gabrielle, College de France, Lab. d'Embryol. et Teratol. du C.N.R.S. * WOLFF, Et. Prof., Dir. * WOLFF, Mrs. Em. Maitre de Recherches * SENGEL, Ph. Sous-Dir. du Lab. du Coll. de France * BENOIT, J. A. A. * BERMANN, F. * CALAME, Miss S. M. * CROISILLE, Y. * DAMERON, Miss F. * DIETERLEN (LlEVRE), Mrs. F. Attachee de Rech. * DOUARIN, G. le * DOUARIN (CH All VAC), Mrs. N. * GOUBE DE LA FOREST, P. * KIENY, Mrs. M. A. Chargee de Rech. * KIRRMANN, J.-M. Attachee _jie Rech. * LAZARD (HAUBEN), Mrs. L. * MARIN (LEWIN), Mrs. L. Attachee de Rech. * PINOT, Miss M. * POURREAU (SCHNEIDER), Mrs. N. * REYSS-BRION (DUCREAU), Mrs. M. Attachee de Rech. * SALAON, Miss J. * SALZGEBER, Miss B. Chargee de Rech. * SCHEIB (PFLEGER), Mrs. D. Chargee de Rech. * SCHOWING, J. * SENGEL, Miss C. * SIGOT, M. Asst. France France * SIGOT (LUIZARD).Mrs. M. F. * STENGER (HAFFEN), Mrs. K. E. Chargee de Rech. * STRUDEL, G. Orsay (S. et O.), Centre d'Orsay, Fac. des Sci. de Paris, Lab. de Biol. Anim., S.P.C.N. * LENDER, Th. Prof. DUVEAU, Miss J. Maitre-Asst. DELA VAULT, R. Chef de Trav. LE MOIGNE, A. Asst. GABRIEL, A. Asst. KLEIN, Miss C. Orsay (S. et O.), Fac. des Sci., Lab. d'Anat. comp. * COURTEY, Miss B. Asst. Paris Ve, 1 1 Place Marcelin Berthe- lot, College de France, Lab. d'Embryol. exper. (Vid. Nogent sur Marne, Lab. d'Embryol. et Teratol. du C.N.R.S.) Paris Ve, 7 Quai St. Bernard, Fac. des Sci., Lab. d'Anat. et d'Histol. comp. * DEVILLERS, Ch. Prof. * FRANgOIS, Y. Paris Ve, 13 Rue Pierre Curie, Fac. de Med., Inst, de Biol. Physicochim. ANCEL, P. A. Prof. Paris Ve, 12 Rue Cuvier, Univ. de Paris, Fac. des Sci., Lab. d'Embryol. GALLIEN, L. Prof., Dir. HOUILLON, Ch. M. Conf. SIGNORET, J. Chef de Trav. COLLENOT, A. Asst. LABROUSSE, J. Asste. CERTAIN, Ph. Asste. CHALUMEAU, M. Th. Stagiaire de Rech. C.N.R.S. Lab. de Physiol, comp. JOST, A. D. Prof., Dir. JACQUOT, R. Chef de Trav. PICON, L. Asst. GELOSO, J. P. Asst. COHEN, Miss A. ROFFI, J. MANIEY, J. Asst. Pavilion Curie, Lab. de Biol. Anim. * MAY, R. M. Prof. * THILLARD, Miss M. J. Asste. Paris Ve, 55 Rue de Buffon, Ecole d'Anthropol. de P. Broca MARIN, L. Ministre, Dir. * FRIANT, Miss M. Prof. Paris Vie, 45 Rue des Sts. Peres, Fac. de Med. Nouvelle, Lab. d'Embryol. * GIROUD, A. Prof., Dir. * TUCHMANN-DUPLESSIS, H. Prof. * MARTINET, Mrs. M. * MERCIER( PAROT), Mrs. L. * HUYGNARD, C. * ROUX, C. Asst. * AUROUX, M. Asst. * SOLfiRE, Asst. Lab. d'Anat. fonctionnelle * DELMAS, A. Prof., Dir. AARON, CI. * OLIVIER, G. * EYRIES, Ch. * QUEREUX, P. * PINEAU, H. * MARTIN, P. * BARBIN, Y. * PERLES, B. * CHOUARD, C. H. VAN STEENKISTE, J. Paris Xllle, 111 Rue L. M. Nord- mann, Univ. de Paris, Hopital Bro- ca, Ecole Prat, de Hautes Etudes, Lab. d'Hormonol. et Cytol. exper. MORICARD, R. Dir. GOTHIE, Miss M. M. C. S. GUILLAUD, N. RODRIGUEZ (GALINDO), Mrs. M. HINGLAIS (GUILLAUD), Mrs. N. CARTIER, R. Paris XVIe, 4 Avenue Gordon Ben- nett, College de France, Lab. d'Histophysiol. BENOIT, J. Prof. LEROY, P. J. M. TIXIER (VIDAL), Mrs. A. Agr. 179 Germany (E.) MOSZKOWSKA, Mrs. A. Poitiers, Vienne, Fac. des Sci., Lab. de Zool. et Biol. anim. * LARAMBERGUE, M. de Prof. Zool. * LEGRAND, J. J. Prof. Biol. anim. * VOY, A. Maitre de Conf. * MICHON, J. Chef de trav. * ALAPHILIPPE, F. Chef de T.P. * CHAIGNEAU, J. Asst. * REGONDAUD, J. Asst. TARDY, J. Asst. * JOHNSON, G. Cherch. C.N.R.S. Sannois (S. et O.), Quartier des Vieux Moulins, Lab. de l'lnst. Pasteur * RAYNAUD, A. Chef Strasbourg, 12 Rue de l'Universite, Univ. de Strasbourg, Fac. des Sci., Lab. de Zool. et Embryol. exper. * VIVIEN, J. H. Prof., Dir. SIGOT, A. Prof. * STEPHAN, Fr. Prof. * HAMPE, A. Charge de cours * FOLLENIUS, E. Chef de trav. * THIEBOLD, J. J. Chef de trav. * MELLINGER, J. Asst. KIRSCH, R. Asst. * DOER (SCHOTT), Mrs. J. Asste. * KLEIN, Miss Ch. Asste. * HAY, Miss D. Asste. * PERRENOT, Miss M. Asste. * STEPHAN (DUBOIS), Mrs. Fr. Maitre de rech. * SIMON (WITTERSHEIM), Mrs. D. Attachee de rech. RUHLAND (GAISER), Mrs. M. L. Attachee de rech. * STEFAN, Miss Y. Attachee de rech. * WENIGER, J. P. Attachee de rech. * PETROVIC, A. Cherch. libre KOLMAYER, Miss S. Cherch. libre Lab. de Biol, gener. * BOUNOURE, L. Prof., Dir. Germany (E.) * AUBRY, Miss R. Stagiaire de rech. Strasbourg, 1 Place de l'Hopital, Fac. de Med., Inst. d'Embryol. * CLAVERT, J. M. J. Prof., Dir. * ZAHND, P. J. J. Chef de trav. ZAHND, Mrs. M. M. Asste. * RUCH, J. V. Asst. Talence (Gironde), 351 Cours de la Liberation, Fac. des Sci. de l'Univ. de Bordeaux, Lab. de Biol. Anim. * CAMBAR, R. Prof. * GIPOULOUX, J. D. Chef de trav. * DECHAMBE, Miss C. Asste. * ALBERT, J. Asst. Talence (Gironde), 40 Rue Lamar- tine, Fac. des Sci. de l'Univ. de Bor- deaux, Lab. de Zool. et de Physiol, anim. AVEL, M. Prof., Dir. * SCHOELLER, Miss J. Asste. Lab. de Zool. exper. * HAGET, A. Prof. * ALLEAUME (BORDES), Mrs. N. Attachee de Rech. * VIGNAU, Miss J. Stag, de Rech. * LOUVET, J.-P. Asst. Lab. de Physiol, gener. * DUTRIEU, Miss J. Maitre-asst Toulouse (Hte. Gne.), 39 Allees Ju- les Guesde, Fac. des Sci., Lab. de Biol, gener. NOUVEL, H. Prof., Dir. * BEETSCHEN, J. CI. Maitre de Conf. TABERLY, G. Maitre Asst. GASSER, F. Asst. STREIFF, W. Asst. Ville d'Avray (S. et O.), 29 Rue Pradier * ROSTAND, J. Villefranche s.M., A.M., Station Zool. * LALLIER, R. A. GERMANY (East) Berlin-Buch, Lindenberger Weg 70, Deutsche Akad. der Wiss. zu Berlin, Inst, fur Med. und Biol. 180 Germany (W.) BUTSCHAK, G. Gatersleben, Kreis Aschersleben, Deutsche Akad. der Wiss. zu Berlin, Inst, fur Kulturpflanzenforsch. * PANITZ, R. Halle (Saale), Hollystr. 1, Martin-Luther-Univ., Phvsiol.-chem. Inst. HANSON. Prof. * MULLER, K. E. Asst. Magdeburg, Erich-Weinert-Str. 3, Med. Akad., Biol. Inst. * MULLER, G. Prof. * SCHONZEL, G. Rostock, Stalinplatz, Zool. Inst, der Univ. * ARNDT, E. A. Doz. * PENZLIN, H. Oberasst. Rostock, Gertrudenstr. 9, Anat. Inst, der Univ. * SCHUMACHER, G.-H. Prof. GERMANY (West) Bonn, Zool. Inst, der Univ., Entw. geschichtl. Abt. * WURMBACH, H. Prof. SCHNEIDER, L. ERHARD, R. P. CLAES, H. BEYER, J. POHLAND, Miss H. Darmstad, Zool. Inst, der Technischen Hochschule * LUTHER, W. Prof. Erlangen, Wasserturmstr. 5, Physiol. -chem. Inst, der Univ. * HORSTMANN, H. J. Frankfurt a.M. Sud, Ludwig Rehn- str. 14, Med. Fak. der Univ., Dr. Senckenbergisches Anat. Inst. STARCK, D. Prof., Dir. Freiburg i.Brsg., Katharinenstr. 20, Zool. Inst, der Univ. * LODTKE, H. Prof., Dir. * HAUENSCHILD, C. Prof. STARK, O. J. Asst. JAHN, Th. Asst. Freiburg i.Brsg., Gerberau 32, Museum fur Naturkunde * SCHNETTER, M. Giessen, Friedrichstr. 24, Anat. Inst. Germany (W.) ROLLHAUSER, H. Prof. ROLLHAUSER (TER HORST), Mrs. J. GRAUMANN, W. Prof. Gottingen, Berlinerstr. 28, Univ. Gottingen, Mathem. Naturwiss. Fak., Zool. Inst, und Museum PIEPHO, H. Prof. BUCKMANN, D. Gottingen, Kreuzbergring 36, Med. Fak., Anat. Inst, der Univ. Gottingen * BLECHSCHMIDT, E. o.o.Prof. * HINRICHSEN, K. Oberasst. * STEDING, G. Asst. Hamburg 20, Martinistr. 52, Univ.-Krankenhaus Eppendorf, Anat. Inst, der Univ. * BAUTZMANN, H. o.Prof. * WARTENBERG, H. Asst. * STEGNER, H.-E. Hamburg 36, Holstenwall 24, Inst, fur Fischereibiol. der Univ. * LILLELUND, K. * HAMDORF, K. * HEMPEL, G. Heidelberg, Voss-str. 3, Inst, fur exp. Krebsforsch. der Univ. * QUERNER, H. Dozent Heiligenberg (17b), Kreis Ueberlin- gen/Bodensee, Heiligenberg Inst. * MANGOLD, O. Prof., Abt.-leiter * WOELLWARTH, C. von Asst. * TIEDEMANN, H. Asst. * TIEDEMANN (WAECHTER), Mrs. H. Asst. * BECKER, Miss U. Asst. * WEHRMAKER, A. Asst. ZWIRNER, R. Gast Kiel, Neue Universitat, Eingang Fl., Anat. Inst, der Univ. BARGMANN, W. Prof., Dir. FLEISCHHAUER, K. HORSTMANN, E. Prof. * OKSCHE, A. Koln-Lindenthal, Kerpenerstr. 13, Zool. Inst, der Univ. * KUHN, O. Prof., Dir. * HARTWIG, H. Dozent * ENGLANDER, H. Dozent 181 Greece * KOECKE, H.-U. Dozent * VAHS, W. Asst. Dozent * ANTON, H. J. Asst. * JOHNEN, Miss A. G. Asst. * WEBER, W. Asst. Koln-Lindenthal, Gyrhofstr. 17, Inst, fur Entw.physiol. * HARTE, Miss C. Prof. * POHLEY, H.-J. Privatdozent * MUTH, Fr. W. STANGE, Miss L. Privatdozentin Mainz, Saarstr. 21, Johannes Guten- berg Univ., Zool. Inst. ANDRES, G. Mainz, Botan. Inst, der Univ. * HACCIUS, Miss B. Prof. Marburg/Lahn (16), Ketzerbach 63, Zool. Inst, der Univ. SEIDEL, F. Prof., Dir. Marburg/Lahn, Robert Kochstr. 6, Anat. Inst, der Univ. MESSING, K. Prof., Dir. * PETRY, G. Prof. WENDT, G. G. Prof. * PETERS, Th. Asst. LIEBER, Miss A. Asst. Mariensee, Kreis Neustadt a. Rii- benberge, Max Planck Inst, fur Tierzucht, Abt. fiir Entw.physiol. * GOTTSCHEWSKI, G. H. M. Prof. Munchen 2, Luisenstr. 14, Zool. Inst, der Univ. Munchen AUTRUM, H. Dir * SCHNEIDER, D. TEICHMANN, H. Munchen 15, Pettenkoferstr. 11, Anat. Inst, der Univ. Munchen LANZ, T. von Prof., Dir. DINGLER (HAHL), Mrs. E. C. Privatdozent DZIALLAS, P. R. Prof. NEUHAUSER, G. B. E. LIPPERT, H. LIPPERT, Mrs. E. Munchen 15, Thalkirchnerstr. 36, Pathol. Inst, der Univ. Munchen * WRBA, H. Privatdozent 182 Greece Munster (Westf.), Vesaliusweg 12/14, Inst, fur Humangenetik der Univ. VERSCHUER, O. Frhr. von Prof., Dir. * TESTAVONBAPPENHEIM,I. * DEGENHARDT, K.-H. Privatdozent Stuttgart-Hohenheim, Zool. Inst, der Landwirtschaftl. Hochschule * PFLUGFELDER, O. Prof., Dir. Tubingen, Wurttemberg, Spemann- str. 34, Max-Planck-Inst. fiir Biol. BEERMANN, W. Dir. KUHN, A. Prof. Tubingen, Wurttemberg, Holderlin- str. 12, Zool. Inst, der Univ. * GRELL, K. G. Prof. * SCHWARTZ, V. Prof. * EGELHAAF, A. * CZIHAK, G. Asst. Tubingen, Wurttemberg, Anat. Inst, der Univ. * MERKLE, U. Asst. Wilhelmshaven (23), Max Planck Inst, fiir Meeresbiol. * HAMMERLING, J. Prof. WERZ, G. CLAUSS, H. BREMER, J. SCHWEIGER, H. G. Wiirzburg, Rontgenring 10, Univ. Wiirzburg, Naturwiss. Fak., Zool. Inst. * KRAUSE, G. Prof.. Dir. * BIER, K. Privatdozent * HUBL, H. Stud. Prof. * SANDER, K. Asst. FULDNER, D. Inst, fiir Angewandte Zool. * GoSZWALD, K. Prof., Inst. Vorstand * KLOFT, W. Asst., Privatdozent * SCHMIDT, G. H. Asst. GREECE Athens, Univ. of Athens, Zool. Lab. and Museum * KIORTSIS, V. Prof., Dir. ONTRIAS, Sr. Asst. ZAFIRATOS, Asst. Hungary HUNGARY Budapest IX, Tuzolto u. 58, Med. Univ.. Inst, of Histol. and Embryol. VIGH, B. ToRoK, L. J. GYEVAI, Mrs. T. A. Pecs, Dischka u 5, Univ. Med. School, Dept. of Anat. * SZENTAGOTHAI, J. Prof. * SZEKELY, G. * STRAZNICKY, Ch. Szeged, Univ. Med. School, Dept. of Anat. * CSILLIK, B. * SCHNEIDER, I. * KALMAN, G. Tihany, Lake Balaton, Hung. Acad, of Sci., Biol. Research Inst. * KONOK, I. B. ITALY Bari, Policlinico, Fac. of Med., Inst, of human Anat. * AMPRINO, R. M. Prof., Dir. * CAMOSSO, Miss M. E. Asst. MAROTTI, G. Asst. MITOLO, V. Asst. Bologna, Via S. Giacomo 9, 1st. di Zool. * VANNINI, E. Prof., Dir. * GHIRARDELLI, E. 1st Asst., Prof., Lib. Doc. * RANZOLI, F. Prof., Lib. Doc. * STAGNI, Miss A. Asst. * ZAFFAGNINI, F. Asst. * MASETTI ZANNINI, Miss A. Asst Bologna (103), Via Belmeloro 8, 1st. di Anat. comp. * LEGHISSA, S. Prof., Dir. * RAUNICH, L. Prof., Guestworker * MINELLI, G. Asst. * ROSSINI. Miss M. C. Asst. * PAVANELLI, Miss C. Asst. * BOSINELLI, Miss L. Asst. * ROSSI, Miss M. R. Asst. Bologna, 1st. di Istol. e Fisiol. gen. OLIVO, O. M. Prof. RIZZOLI, C. Bologna, Via Massarenti 13, Italy Clin. Ostetr. e Ginecol. "P. Sfameni" * TARTAGLIA, P. Asst. Cagliari, Via Porcell 2, 1st. di Anat. umana normale * BORGHESE, E. Prof. Camerino, Univ. di Camerino, 1st. di Zool. e Anat. Compar. * URBANI, E. Prof. URBANI (MISTRUZZI), Mrs. L. Prof. Inc. * RUSSO-CAIA, S. Prof. Inc. BELLINI, Miss L. Asst. DECESARIS (COROMALDI), Mrs. L. V.Asst. Catania, Via Androne 25, Univ. di Catania, 1st. di Zool. * LA GRECA, M. Prof. * PATANE, L. Prof. Ferrara, Univ. di Ferrara, 1st. di Anat. Comp. * RAUNICH, L. Prof. Ferrara, Via Fossato di Mortara 66, Univ. di Ferrara, 1st. Anat. MURATORI, G. Prof., Dir. (no embryol. work in progress) Frascati (Roma), Div. Biol, del C.N.E.N., Sincrotrone * BORGHESE, E. Prof. * MONESI, V. * ALESCIO, T. Messina, 1st. Zool. dell'Univ. * BOLOGNARI, A. * ALBANESE, Miss M. P. Asst. Milano, Via Celoria 10, Univ. di Milano, Fac. di Sci. 1st. di Zool. e Anat. comp. RANZI, S. Prof., Dir. CIGADA (LEONARDO, Mrs. M. Asst. LEONE, V. Asst. CITTERIO, P. 1st. di Genet. * BARIGOZZI, C. Prof., Dir. * CASTIGLIONI, Miss M. C. Asst. Milano, Via Ponzio 7, Fac. di Med. e Chir. dell'Univ. di Milano, Cattedra di Istol. ed Embriol. gen. * PRETO PARVIS, Mrs. V. Prof. * RONCORONI, G. Asst. * PIRIA, F. Asst. 183 Italy * FORNI, Miss S. Asst. Modena, Via Universita 4, Fac. di Sci., 1st. di Anat. comp. * BAFFONI, G. M. Napoli, Via Mezzocannone 8, Univ. di Napoli, 1st. di Zool. * SALFI, M. Prof. * SARA, M. Prof. 1st. di Genet. * CHIEFFI, G. Lib. Doc. Napoli, Zoological Station DOHRN, P. Dir. TARDENT, P. GHIRETTI, F. TOSI, Miss L. RENZONI, A. Asst. BRINCKMANN. Miss A. CeAS, Miss M. P. HESS, O. Padova, Via Loredan 10, Fac. di Sci., 1st. di Zool. e Anat. Comp. * D'ANCONA, U. Prof., Dir. * SABBADIN, A. Prof. MARCUZZI, G. Lect. * BATTAGLIA, B. Lect. * SALA, M. Asst. * MARIN, G. Lect. Palermo, Via Archirafi 18, Univ. di Palermo, 1st. di Istol. ed Embriol. * MINGANTI, A. Prof. 1st. di Zool. * REVERBERI, G. Prof., Dir. * ORTOLANI, Miss G. Asst. * MANCUSO, V. Asst. * D'ANNA, T. Asst. * FARINELLA (FERRUZZA), Mr. N. Asst. * DURANTE, Miss M. Asst. * LA SPINA, Miss R. Asst. * MOLINARO, M. Asst. * PATRICOLO, Miss E. * MANSUETO, Miss C. * PUCCI, Miss I. * CROWELL, Miss J. Palermo, Via Archirafi 22, Univ. di Palermo, 1st. di Anat. Comp. * MONROY, A. Prof., Dir. * MAGGIO, Miss R. Asst. * D'AMELIO, V. Asst. 184 Italy * GUIDICE, G. Asst. OLIVA, O. A. Techn. Asst. VITTORELLI, Miss M. L. Res. Assoc. BOSCO, Miss M. Res. Assoc. Parma, Universita, 1st. di Zool. e Anat. comp. * SCHREIBER, B. Prof., Dir. Perugia, S. Pietro, Fondazione Agra- ria, 1st. di Biol. gen. * SPIRITO, A. Prof., Dir. * CASTIGLI (PITOTTI),Mrs. M. Prof., Inc. Doc. * BONDI, C. Prof., Lib. Doc. * LIOTTI, F. S. Asst. * PIMPINELLI, G. Asst. * ANDREOLI, Miss V. Asst.f.f. Perugia, S. Pietro, Fac. di Sci., 1st. di Anat. comp. f PERRI, T. Prof. * COLOMBO, G. Prof., Dir. * NOTARNICOLA, Mrs. L. Asst. Perugia, Univ. di Perugia, 1st. di Fisiol. gen. e spec, degli Ani- mali domestici e Chim. biol. * ROWINSKI, P. Prof. MILLO, A. BEGLIOMINI, A. Pisa, Via A. Volta 4, Fac. di Sci., 1st. di Zool. e Anat. comp. dell'Univ. * BENAZZI, M. Prof., Dir. * BENAZZI (LENTATI), Mrs. G. * NOBILI, R. Asst. * MANCINO, G. Asst. * PUCCINELLI, I. Asst. * MAGAGNINI, G. Asst. * SCALI, V. Pisa, Via Roma 33, Inst, of Anat. and Histoembryol. of the Univ. * MASSART, C. Prof., Dir. * PERA, L. Asst. Prof. * MICHELUCCI, S. Asst. Roma, Viale Regina Elena 324 (Policlinico), 1st. di Zool. dell'Univ. di Roma * PASQUINI, P. Prof., Dir. * PETRUCCI, D. Asst. Prof. * MANELLI, H. Asst. CONSIGLIO, C. Asst. MARGARITORA, F. Asst. Netherlands MILANO, E. Asst. Roma, Via Borelli, 50, Univ. di Ro- ma, Fac. di Sci., 1st. di Anat. Comp. "G. B. Grassi" * STEFANELLI, A. Prof., Dir. * ROSSI, A. Asst. ZACCHEI, A. M. Extr. Asst. * BERTOLINI. B. Asst. MANGILI. G. V.Asst. * CAPANNA, E. Asst. MUZII, E. V.Asst. CAPANNA-FORTE, C. V.Asst. MARINI, M. V.Asst. CATALDI, E. V.Asst. IERADI, L. A. V.Asst. Torino, Via Giovanni Giolitti 34, Inst, of Comp. Anat. * MAZZI, V. Dir. * GUARDABASSI, Miss A. Asst. Torino, Corso Massimo d'Azeglio 52, Fac. of Med., Inst, of human Anat. LORETI, F. Prof., Dir. LEVI, G. L. Prof. (Emer.), Anc. Dir. * FILOGAMA, G. Aiuto, Prof. Inc. Istol. ed Embriol. FRANCESCHINI, M. Asst., Lib. Doc. CANDIOLLO, L. Asst. LEVI, A. Asst. Torino, Via Nizza 52, 1st. di Anat. veter. * GODINA, G. Prof., Dir. * BARASA, A. Asst. NETHERLANDS Amsterdam C., Plantage Doklaan 44, Municipal Univ. of Amsterdam, Zool. Lab. * SLIJPER, E. J. Prof., Dir. * NAAKTGEBOREN, C. Amsterdam O., Mauritskade 61, Municipal Univ. of Amsterdam, Fac. of Med., Anat.-Embryol. Inst., Div. of Exp. Morphol. * WOERDEMAN, M. W. Prof., Dir. of Inst. * TRAMPUSCH, H. A. L. Chief Asst., Lect. Netherlands * DOORENMAALEN, W. J. van JOCHEMS, D. J. * BORDEN, J. van der * VERWOERD, C. D. A. * HARREBOMEE, Miss A. E. * DRUKKER, J. Amsterdam O., Mauritskade 59B, Netherlands Central Inst, for Brain Research BOK, S. T. Prof., Dir. * NIEUWENHUYS, R. Amsterdam Z., Prins Hendriklaan 27, Free Calvinistic Univ., Anat.-Embryol. Lab. FAASSEN, F. van Dir. Groningen, Oostersingel 69, Univ. of Groningen, Fac. of Med., Dept. of Anat. and Embryol. ARIENS KAPPERS, J. Prof., Dir. * BIJTEL, Miss J. H. Lect. MOLL, J. Prosector PROP, N. Chief Asst. PLEEGING, J. H. Asst. ZWEENS (TEN KATE), Mrs. J. B. ZWEENS, J. KRANENDONK, G. HEYDEN, W. van der * GLAS, P. Leiden, 63 Kaiserstraat, State Univ., Zool. Lab. * JONGH, H. J. de Leiden, Wassenaarseweg, Boerhaa- vekwartier, State Univ., Fac. of Med., Anat.-Embryol. Lab. * DANKMEIJER, J. Prof., Dir. LANDSMEER, J. M. F. Prosector * DEKKER, Miss A. Prosector * LOS, J. A. Prosector * BROUWER, P. J. Prosector * INGEN, Miss H. C. van Prosector * GOEDBLOED, J. F. Asst. * MIETE, M. * HOEFSMIT, Miss E. C. M. Leiden, Rijnsburgerweg 10, Boer- haavekwartier, State Univ., Fac. of Med., Lab. for Cytol. and Exper. Histol. 185 Norway * GAILLARD, P. J. Prof., Dir. * ZAAIJER, Miss J. J. P. Lect. Leiden, Academisch Ziekenhuis, Fac. of Med., Dept. of Cardiol. * SNELLEN, H. A. Prof. Leiden, 5e Binnenvestgracht 8, State Univ., Genet. Lab. * GLOOR, H. J. Prof., Dir. * SCHARLOO, W. Asst. Nijmegen, Kapittelweg 40, R.K. Univ., Lab. for Anat., Histol. and Embryol. LAMMERS, H. J. Prof., Dir. * WITKAM, W. G. M. Utrecht, Janskerkhof 2, Hubrecht Lab., Intern. Embryol. Inst. * NIEUWKOOP, P. D. Prof., Dir. * FABER, J. 1st Sci. Off. * BOTERENBROOD, Miss E. C. Asst * LEUSSINK, J. A. Asst. * GEBHARDT, D. O. E. Asst. (histo- & cytochem.) * HARA, K. Asst. LAWSON, Miss K. Asst. (tissue-culture; 1962) Guest-workers 1961/62: * CORNER, M. (New York) * MICHAEL, M. I. (Alexandria) * FALAKALI, M. S. (Izmir, Turkey) * BABB, J. D. (U.S.A.) LABORDUS, V. Utrecht, Janskerkhof 3, State Univ. of Utrecht, Fac. of Sci., Zool. Lab. * RAVEN, Chr. P. Prof., Dir. * KAMER, J. C. v. d. Lect. * GEILENKIRCHEN, W. L. M. Asst * VERDONK, N. H. Asst. * UBBELS, Miss G. A. Asst. * TIMMERMANS, Miss L. P. M. Asst LABORDUS, V. Asst. BLUEMINK, J. G. Asst. * NIJENHUIS, E. D. Utrecht, Janskerkhof 3, Centrum voor Electronenmicroscopie BRETSCHNEIDER, L. H. Prof. 186 Poland ELBERS, P. F. Utrecht, Janskerkhof 3A, State Univ. of Utrecht, Med. Fac, Anat.-Embryol. Lab. * CATE, G. ten Prof., Dir. SNELL, C. A. R. D. Prof., * LIMBORGH, J. van Chief Asst! TACOMA, J. Asst. * SCHALEKAMP, M. A. D. H. Asst * BOERSMA, W. Asst. * KAMPHUIS, L. W. Asst. Utrecht, Bekkerstr. 141, State Univ. of Utrecht, Veter. Anat. and Embryol. Inst. * MEIJLING, H. A. Prof., Dir. SCHOTSMAN, J. G. W. * WIERTZ (HOESSELS), Mrs. E. L. M. J. * KREDIET, P. * NIE, C. J. van Utrecht, Alex. Numankade 93, State Univ. of Utrecht, Lab. for Veter. Physiol. * ROMIJN, C. Prof. NORWAY Oslo, Blindern, Univ. of Oslo, Dept. of Zool. JOHANSSON, A. S. Prof. (no embryol. work in progress) Oslo, Univ. of Oslo, Anat. Inst. * JANSEN, J. Dir. * HARKMARK, W. Prosector * STALSBERG, H. Paradis * UBISCH, L. v. Prof. (Emer.) N. IRELAND (ULSTER) (Vid. UNITED KINGDOM) POLAND Krakow, ul. Kopernika 7, Acad, of Med., Dept. of Biol, and Embryol. * SKOWRON, S. Prof., Dir. * SREBRO, Z. A. * RZEHAK, K. F. * SPISAK (PLONKA), Mrs. I. * KONIECZNA (MARCZYNSKA), Mrs. B. Portugal Polish Acad, of Sci., Dept. of Exper. Zool. * SKOWRON, S. Prof., Dir. * NIWELlNSKI, J. M. * ROGUSKI. H. F. * MARON, K. * JORDAN, Miss M. A. KOMALA, Miss Z. * PIETRZYK (WALKNOWSKA), Mrs. J. * SKOWRON (CENDRZAK), Mrs. A. * zABInSKI, J. * ZAMORSKA, Miss L. Krakow, sw. Anny 6, Jagiellonian Univ., Fac. of Sci., Zool. Dept. SMRECZYNSKI, S. Head of Dept. * W5GLARSKA, Miss B. Asst. * KRZYSTOFOWICZ, Miss A. Asst. * JURA, Cz. Asst. Krakow, sw. Anny 6, Zaklad Anat. Porownawczej U.J. im H. Hoyera * GRODZINSKI, Z. Prof., Head of Inst. * BYCZKOWSKA (SMYK), Mrs. W- * SZUBINSKA, Mrs. B. S. Lodz, Narutowicza 60, Acad, of Med., Inst, of Histol. & Embryol. * BAGINSKI, S. Prof., Dir. * BAGINSKA (BORSUK), Mrs. I. Lect. RUDEWICZ, Mrs. Cz. Asst. * FORTAK, W. Asst. * KUNSKI, H. Asst. JEDRZEJEWSKA, Mrs. H. Lect. SIWINSKA, Mrs. D. Asst. Poznari, ul. Przybyszewskiego 49, Med. Acad., Neurol. Clinic * WENDER, M. B. Pulawy, Inst, of Zootechn., Dept. of Exper. Biol. * KRZANOWSKA (DATK6WNA), Mrs. H. Warszawa 64, Univ. of Warsaw, Zool. Inst., Mamm. Res. Inst. * TARKOWSKI, A. K. Portugal Warszawa 64, Krakowskie Przed- miescie 26/28, Warsaw Univ., Zaklad Embriol. U.W. * BILEWICZ, S. Prof, extraord. Dept. of Cytol. * PERKOWSKA, Mrs. E. MOSER * GEYER (DUSZYN§KA), Mrs. I. * MATUSZEWSKI, B. Warszawa, ul. Grochowska 272, Veter. Fac, Inst, of Histol. and Embryol. * KONOPACKA, Mrs. B. Prof. * BIELANSKA, (OSUCHOWSKA), Mrs. Z. Assoc. Prof. * SUMINSKI, E. H. * SZANKOWSKA, Z. Wroclaw, ul. Sienkiewicza 21, Inst. Zool. Uniw. B.B. we Wroclawiu, Zaklad Zool. Ogolnej SEMBRAT, K. Prof., Dir. RADECKA, Mrs. E. ERDMAN Adj. PASCHMA, M. Adj. KIELBOWNA, Miss L. Asst. NOWAK6WNA, Miss J. Asst. KOsCIELSKI, B. Asst. GAWRON6WNA, Miss M. Asst. Wroclaw, ul. Bujwida 9, Akad. Med., Zaklad Biol. Ogolnej * STUCHLY, Z. Prof. Zabrze, Rokitnica, Silesian Acad, of Med., Dept. of Gener. Biol. * WROBLEWSKI, R. Prof., Head of Dept. * MICHALOWSKI, J. Asst. * BELKA-GRZYBEK, A. Asst. * NOWAK, A. Asst. * PLUTA, E. Asst. * CZAPSKA, D. Asst. * KUCIAS, J. Asst. * GRUCA, St. Asst. * ACHTELIK, W. Asst. PORTUGAL Coimbra, Fac. de Med., Inst, de Histol. e Embriol. 187 Rumania Sweden TAVARES DE SOUSA, A. Prof. (no embryol. work in progress) Lisboa, Avenida 28 de Maio, Fac. de Med., Inst, de Histol. e Embriol. * XAVIER MORATO, M. J. Prof., Dir. * TEIXEIRA, Mrs. I. Lisboa, Univ. de Lisboa, Museu e Lab. Zool. de Ciencias * FONSECA SACARRAO, G. da Prof. RUMANIA Cluj, Strada Pasteur 6, Inst. Medico- Farmaceutic, Catedra de Biol. * PREDA, V. Prof. Timisoara, Bui. Mihai Viteazul 24, Acad. Republ. Populare Romine, Baza de cercetari Stiintifice Timi- soara ; MENKES, B. Prof. SCOTLAND ( Vid. UNITED KINGDOM) SPAIN Madrid, Ciudad Universitaria, Fac. de Med., Lab. de Anat. y Embriol. * ORTS LLORCA, F. Prof., Dir. GOMES OLIVEROS, L. SWEDEN Goteborg SV, Fjarde Langgatan 7B, Univ. of Goteborg, Zool. Inst. * BERGQUIST, H. * DYBERN, B. I. * JOHANSSON, N. Goteborg SV, Univ. of Goteborg, Dept. of Anat. * BENGMARK, S. Dozent * HESSELSJO, R. * NILSSON, S. Goteborg SV, Medicinaregatan 5, Univ. of Goteborg, Dept. of Histol. * L0VTRUP, S. * EDSTRoM, J.-E. Decent Lund, Biskopsgatan 7, Tornblad Inst, of comp. Embryol. GLIMSTEDT, G. Prof. Dir. * KALLEN, B. Docent * KRABBE, K. H. 188 * RtiDEBERG, S. I. Amanuensis * VALMIN, K. Amanuensis Lund, Univ. of Lund, Zool. Inst., Embryol. Dept. DAHL, E. Prof. AKESSON, B. Docent ENEMAR, E. A. W. MEURLING, P. B. MECKLENBURG, C. L. F. C. Zoophysiol. Inst. * AGRELL, I. P. S. Prof. LINDH, N. O. Doc. Dept. of Anat. * FORSBERG, J.-G. * LINDH, J. Stockholm, Radmansgatan 70A, Univ. of Stockholm, Zool. Inst. * SILEN, L. K. P. Prof., Dir. * PEHRSON, G. T. Prof. * NYHOLM, K. G. Reader OLSSON, R. Lect. k BERTMAR, G. Lect. * FRIDBERG, G. Asst. * HAGELIN, L. O. Asst. Stockholm Va., 16 Norrtullsgatan, Fac. of Sci. and Mathem., Wenner- Gren's Inst, for exper. Biol. LINDBERG, N. O. H. Prof., Dir. * RUNNSTR6M, J. A. M. Prof. (Emer.) * GUSTAFSON, T. Assoc. Prof. * HULTIN, J. M. T. Asst. Prof. HAGSTRoM, B. Asst. Prof. * MARKMAN, B. Asst. Prof. * IMMERS, J. Asst. * BACKSTROM, S. Asst. PERLMANN, H. P. Asst. Stockholm 50, Swedish Museum of Nat. Hist., Vertebrate Dept. JOHNELS, A. G. (no embryol. work in progress) Stockholm 50, Statens Veterinar- medic. Anstalt, Dept. of Parasitol. * MONNE, L. Assoc. Prof. Stockholm 60, Solnavagen 1, Karolinska Inst., Dept. of Histol. * HAGGQVIST, G. Prof. (Emer.) * NORBERG, O. V. Prof. (Emer.) Switzerland Switzerland * GYLLENSTEN, L. J. W. Assoc. Prof. Uppsala, Univ. of Uppsala, Zool. Inst. * HORSTADIUS, S. Prof., Dir. * JAGERSTEN, K. G. M. Prof. * HOLM, K. A. Docent (Curator of the Museum) * FRANZfiN, A. S. Docent * JACOBSON, D. C.-O. * GIDHOLM, L. * EHN, A. Zoophysiol. Inst. LINDAHL. P. E. Prof., Dir. KIHLSTRoM, J.-E. SUNDELL (THORSELL), Mrs. G. SUNDELL, L.-E. BODIN, N.-O. THUNQVIST, L. O. NORDLING, E. G. V. BRATTSAND, R. L. UHLIN, G. WEDIN, K. H. (no embryol. work in progress) SWITZERLAND Basel, Rheinsprung 9, Zool. Anstalt der Univ. * PORTMANN, A. Prof., Dir. * GEIGY, R. Prof. * NOESCH, H. Prof. STINGELIN, W. HAEFELFINGER, H. R. ORELLI, M. von Basel, Pestalozzistr. 20, Anat. Inst. WOLF-HEIDEGGER, G. Prof., Vorsteher SCHENK, R. Prof. LUDWIG, K. S. Prof. Basel, Socinstr. 57, Tropeninst. * GEIGY, R. Prof., Dir. Bern, Sahlistr. 8, Univ. Bern, Zool. Inst. LEHMANN, F. E. Prof., Dir. BALTZER, F. Prof. (Emer.) ROSIN, S. Prof. (Abt. f. Genet.) LOSCHER, M. Prof. (Abt. f. Zoophysiol.) WEBER, R. Asst. Bern, Museum d'Histoire Naturelle * HUBER, W. Privatdozent Bern, Biihlstr. 26, Univ. Bern, Med. Fak., Anat. Inst. * HINTZSCHE, E. Prof., Dir. BLUNTSCHLI, H. Prof. (Emer.), Kust. * STRAUSS, F. a.o. Prof., Pros. FEREMUTSCH, K. Privatdozent Bern, Waldau, Bolligenstr. 117, Med. Fak., Hirnanat. Inst, der Psy- chiatr. Univ. Klinik GRONTHAL, E. Prof., Dir. * PILLERI, G. Asst. Freiburg, Zool.-vergl. Anat. Inst, der Univ. KALIN, J. Prof. Geneve, Rue de Candolle, Univ. de Geneve, Inst, de Zool. et Anat. comp. FISCHBERG, M. Prof. BLACKLER, A. W. C. BALLS, M. HAMMER, M. K. Geneve, 20 Rue de l'Ecole de Med., Univ. de Geneve, Ecole de Med., Inst. d'Anat. * BAUMANN, J. A. Prof., Dir. * WEBER, A. Prof. (Emer.), Dir. du Lab. de Neurohistol. * GALLERA, J. Chef des Trav., Dir. du Lab. d'Embryol. exper. * NICOLET, G. Asst. Lab. d'Embryol. exper. Inst, de Morphol. BAUD, C. A. Prof. Zurich, Universitatsstr. 2, Zool. Inst, der Eidg. Techn. Hochschule * ULRICH, H. Prof., Dir. * KROEGER, H. Zurich 6, Kiinstlergasse 16, Univ. Zurich, Naturw. Fak., Zool.-vergl. Anat. Inst. HADORN, E. Prof., Dir. STEINER, H. Prof. ANDERS, G. CHEN, P. S. Prof. GEIGER, H. R. NISSEN, Th. OELHAFEN, F. H. 189 U.K. (England) SCHNITTER, M. Zurich 7, Gloriastr. 19, Univ. Zurich, Med. Fak., Anat. Inst. * ToNDURY, G. Prof., Dir. * THEILER, K. Prof. * RICKENBACHER, J. * KOCHER, W. UNITED KINGDOM (U.K.) England Near Ashford, Kent, Wye Coll. * EDE, D. A. * KELLY, W. A. ROGERS, Miss A. * HINCHLIFFE, J. R. Birmingham 15, Edgbaston, Birmingham Univ., Dept. of Zool. and Comp. Physiol. COHEN, J. Med. School, Dept. of Anat. ZUCKERMAN, S. Prof., Dir. GREEN, S. H. Lect. * MANDL, Miss A. M. Asst. * EAYRS, J. T. THOMSON, A. P. D. GLASS, A. * LISOWSKI, F. P. DARLINGTON, D. Bristol 8, Univ. of Bristol, Dept. of Zool. HARRIS, J. E. Prof. WHITING, H. P. HINTON, H. E. MUNTZ, Miss L. Cambridge, Downing St., Univ. of Cambridge, Univ. Museum of Zool. GRAY, Sir J. Prof., Head ROTHSCHILD, Lord SMITH, S. SHAFFER, B. M. Med. School, Anat. Dept. * BOYD, J. D. Prof., Dir. HUGHES, A. F. W. MILLEN, J. W. SHUTE, C. C. D. LEVER, J. D. FORD, E. H. R. WOOLLAM, D. H. M. Dept. of Biochemistry WILLIAMS, J. 190 U.K. (England) Dept. of Vet. Clin. Studies * MANN, T. Cambridge, Gonville and Caius Coll. NEEDHAM, J. Prof. Cambridge, Wort's Causeway, Strangeways Research Lab. FELL, Miss H. B. * NEW, D. A. T. Liverpool 3, Univ. of Liverpool, Dept. of Anat. * HARRISON, R. G. Prof. " MACMILLAN, E. W. * CLEGG, E. J. * HARRISON, G. A. * BROOKES, M. London E. 1, Turner St., Univ. of London, London Hosp. Med. Coll., Anat. Dept. * HARRISON, R. J. Head of Dept. JOHNSON, F. R. Reader TOMLINSON, J. D. W. Sen. Lect. * HARRIS, J. W. S. Lect. * YOUNG, B. A. Lect. London E.C.I, Charterhouse Square, St. Bartholomew's Hosp. Med. Coll., Dept. of Zool. and Comp. Anat. * LACY, D. * LOFTS, B. London N.W. 1, Royal College St., Roy. Veter. Coll. * BISHOP, M. W. H. Dept. of Physiol. AMOROSO, E. C. Prof. London N.W. 1, Regent's Park, Bedford Coll., Dept. of Zool. * INCE, Miss F. E. * BAKER, Miss B. I. London N.W. 7, Mill Hill, Nat. Inst, for Med. Research * AUSTIN, C. R. * EDWARDS, R. G. London, S.E. 1 , Guy's Hosp., Med. School, Dept. of Biol. * BAXTER, E. W. London, S.E. 1, St. Thomas' Hosp. Med. School, Dept. of Anat. DAVIES, D. V. Prof. BARNETT, C. H. U.K. (England) London, S.W. 7, British Museum (Nat. Hist.), Zool. Dept. MANTON, S. M. London W. 1 , Middlesex Hosp. Med. School, Dept. of Biol, as Applied to Med. * NEWTH, D. R. Prof. * BILLETT, F. S. * HARRIS. F. T. C. * HAMILTON, Miss L. COPPOLA, Mrs. P. * BEARN, J. R. Dept. of Anat. SILVER, P. H. S. GOULD. R. P. BEAM, J. R. * B0Y0K6ZER, Miss I. (Izmir, Turkey) London W. 2, Norfolk Place, Pad- dington, St. Mary's Hosp. Med. School, Biol. Dept. FISK, A. Anat. Dept. * BELLAIRS, A. d'A. London W.C. 1, Gower St., Univ. Coll. London, Dept. of Anat. and Embryol. YOUNG, J. Z. Prof., Dir. * ABERCROMBIE, M. Prof. * JAMES, D. W. Reader * DEUCHAR, Miss E. M. Lect. * BELLAIRS, Mrs. M. R. Lect. * CURTIS, A. S. G. * OLDFIELD, Miss F. E. * CHAYTOR, D. E. B. * PERTUSA, J. * LEFFORD, Miss F. * LAMONT, Miss D. M. Dept. of Genet. * GRONEBERG, H. Prof. * TRUSLOVE, Miss G. M. * DEOL, M. S. Dept. of Zool. and Comp. Anat. MEDAWAR, P. B. Jodrell Prof. BRENT, L. Lect. * FOX, H. Res. Asst. FRASER, Miss E. A. Hon. Res. Assoc. * FLYNN, T. T. Emer. Prof., Hon. Res. Assoc. U.K. (England) London W.C. 2, 62-65 Chandos Place, Univ. of London, Charing Cross Hosp., Med. School, Dept. of Anat. * HAMILTON, W. J. Prof., Dir. * GLENISTER, T. W. Lect. * BACKHOUSE, K. M. Lect. * ROSS, Miss J. R. W. London W.C. 2, Strand, King's Coll., Zool. Dept. * WOLPERT, L. * BELL, L. G. E. Macclesfield, Cheshire, Alderley Park, Imp. Chem. Ind. Ltd., Pharmaceutical Div. * HARPER, M. J. K. Manchester 13, Univ. of Manches- ter, Dept. of Anat. * ASHLEY, G. T. * BULMER, D. Newcastle upon Tyne, King's Coll., Med. School, Dept. of Anat. * SCOTHORNE, R. J. Prof., Dir. TONGE, C. H. Reader BARLOW, T. E. Sen. Lect. GRAY, J. E. Sen. Lect. SNELL, R. S. Lect. BROWN, H. G. Lect. Oxford, Univ. Museum, Dept. of Zool. and Comp. Anat. NEEDHAM, A. E. GURDON, J. B. BANTOCK, C. R. BEESON, Miss G. E. KIRBY, D. R. S. Dept. of Human Anat. * DICK, D. A. T. Sheffield, Univ. of Sheffield, Dept. of Zool. CHESTER JONES, I. Prof. * FRANCIS, E. T. B. Reader in Vert. Zool. * HIGHNAM, K. C. Lect. in Zool. * EBLING, F. J. Sen. Lect. in Zool. Fac. of Med., Dept. of Anat. * DAVIES, F. Prof. * MARTIN, B. F. Sen. Lect. * KING, T. S. Lect. * HARRIS, P. F. 191 U.K. (N. Ireland) U.K. (Wales) * WILKINSON, W. J. C. * HAIGH, G. Shinfield, Reading, Nat. Inst, for Research in Dairying, Dept. of Physiol. * TAMPION, Mrs. D. N. Ireland (Ulster) Belfast, Queens Univ., Dept. of Zool. * PANTELOURIS, E. M. * WALLACE, H. Scotland Aberdeen, Marischal Coll., Dept. of Embryol. * McKENZIE, J. Dept. of Anat. DICKSON, A. D. Edinburgh 8, Teviot Place, Univ. New Buildings, Univ. of Edinburgh, Dept. of Anat. * MUIR, A. R. * PETERS, A. Dept. of Physiol. * GAZE, R. M. Edinburgh 9, West Mains Road, Univ. of Edinburgh, Dept. of Zool. * SWANN, M. M. Prof., Dir. * HALE, L. J. Lect. * JONES, B. M. Lect. * KILLE, R. A. Lect. * MITCHISON, J. M. Lect. * TUFT, P. H. Lect. * MITCHISON, N. A. Lect. Edinburgh 9, West Mains Road, King's Buildings, Inst, of Anim. Genet. & Univ. Dept. of Anim. Genet., A.R.C. Unit of Anim. Genet., M.R.C. Induced Mu- tagenesis Group * WADDINGTON, C. H. Prof., Dir. * BEATTY, R. A. Sen. Pri. Sci. Off. (A.R.C. Staff) * CLAYTON (FREEDMAN), Mrs. R. M. Lect. * SELMAN, G. G. Lect. * LUCEY, E. C. A. (Cinematogr.) * SIRLIN, J. L. Sen. Sci. Off. (A.R.C. Staff) 192 * PERRY, Miss M. M. Res. Asst. * McLAREN, Miss A. Sen. Sci. Off. (A.R.C. Staff) * JURAND, A. (Brit. Emp. Cancer Camp.) * JONES, R. O. Grad. Stud. * BRAUCKMAN, Miss E. S. Visiting Res. worker * CAMPBELL, J. C. Grad. stud. * KATO, K. Visiting Res. worker * JACOB, J. (Brit. Emp. Cancer Camp.) * TANDLER, C. J. Visiting Res. worker * ELSDALE, T. (Nuffield Fund) * JONES, K. W. (Nuffield Fund) * ROBERTS, K. B. St. Andrews, The University, Bell Pettigrew Museum, Dept. of Nat. Hist. CALLAN, H. G. Prof. (no embryol. work in progress) Wales Bangor, Caernarvonshire, Univ. Coll. of N. Wales, A.R.C. Unit of Embryol. * BRAMBELL, F. W. R. Prof., Dir. * HEMMINGS, W. A. Res. * HALLIDAY, R. Res. * MORRIS, I. G. Res. Cardiff, Univ. Coll. of S. Wales and Monmouthshire, Dept. of Zool. * THOMPSON, T. E. Dept. of Anat. * MOFFAT, D. B. * FOURMAN, Miss J. Menai Bridge, Anglesey, Unv. Coll. of N. Wales, Marine Biol. Station CRISP, D. J. Dir. JONES, W. E. BURDON-JONES, C. AUSTIN, A. P. Swansea, Glamorganshire, Single- ton Park, Univ. Coll. of Swansea, Dept. of Zool. * KNIGHT-JONES, E. W. Prof. * NAYLOR, E. * MOYSE, J. U.S.S.R. Yugoslavia U.S.S.R. Leningrad B-164, Universitetskaja Nabereshnaja 1, Acad, of Sci. of the U.S.S.R., Zool. Inst. * STEINBERG, D. M. Moscow D-315, Baltiyskaya 8, Acad, of Med. Sci. of the U.S.S.R., Inst, of Exper. Biol. LIOSNER, L. D, DOBROKHOTOV, V. N. LAGUCHEV, S. S. SOROKIN. V. I. KONYUKHOV, B. V. * VOLKOVA, L. S. * AVERKINA, R. F. * VYASOV, O. E. * TITOVA, I. I. Moscow V-71, 33 Lenin Avenue, Inst, of Anim. Morphol. of the Acad, of Sci. of the U.S.S.R. KHRUSHCHOV, G. K. Prof. Dir. ASTAUROV, B. L. Prof. BAEVSKY, J. B. BEDNJAKOVA, Mrs. T. A. BUZNIKOV, G. A. DETTLAFF, Mrs. T. A. DRAGOMIROV, N. I. GINSBURG, Mrs. A. S. GINZBURG, G. I. IGNATJEVA, Mrs. G. M. JUROVITSKY, J. G. KOSHELEV, B. V. * LOPASHOV, G. V. Prof. * MANUKHIN, B. N. * NEYFAKH, A. A. * NIKITINA, Mrs. L. A. * POLEZHAEV, L. V. Prof. * RAGOZINA, Mrs. M. N. * RAMENSKAJA, Mrs. G. P. * ROTT, Mrs. N. N. * SCHMIDT, G. A. Prof. * SMITTEN, Mrs. N. A. * STROEVA, Miss O. G. * VEREJSKAJA, Miss V. N. * ZOTIN, A. I. Moscow, Moscow Univ., Fac. of Biol., Dept. of Embryol. * POPOV, V. V. Prof., Dir. YUGOSLAVIA Sarajevo, Fac. de Med., Inst. d'Histol. et d'Embryol. MILIN, R. Prof., Head (no embryol. work in progress) Zagreb, Salata, Fac. de Med., Inst, de Biol. * SKREB, N. Docent * LEVAK, Miss B. Asst. * MULLER, M. Asst. * BIJELIC, N. Asst. * HOFMAN, L. Asst. Inst. d'Histol. et d'Embryol. * FRANK, Z. Asst. * DOMAC, B. Asst. SVAJGER, A. Asst. 193 SUBJECT INDEX (systematical order) The subject index should be used in conjunction with the alphabetical list of names and subjects. The names of the investigators are arranged systematically under a number of headings explained below (see page 197 ff.). Each entry is composed of a name, a lower cast letter referring to the subject in the alphabetical list, a capital letter (or letters) indicating the taxonomic position of the material used, and (in a number of cases) one or more numerals in brackets, further specifying the character of the investigation. In the case of investigations carried out in collaboration by two ore more investigators, all names are listed separately. The system used enables the reader to find related subjects under the same heading, grouped according to the taxonomic position of the material used. Key to taxonomic groups: EV Evertebrata p Protozoa, Mesozoa A Porifera B Coelenterata C Plathelminthes, Aschelminthes, Annelida, D Di Onychophora, Tardigrada, Linguatulida Arthropoda Insecta E Mollusca F G Tentaculata, Brachiopoda, Chaetognatha, Hemichordata Echinodermata Chordata H Urochordata, Cephalochordata V Vertebrata I Pisces J Amphibia K Reptilia L Aves M Mammalia Key to character of investigations: (1 (2 (3 (4 (5 (6 (7 (8 (9 (10 (11 194 Metabolism and respiration Cyto- and histochemistry Biophysics Physical treatment Chemical treatment Influence of hormones, vitamines, growth substances, etc. Biochemistry Immunobiology Electron microscopy Radio-isotope studies Cell, tissue and organ-culture Key to organ systems and organs: CHORDATA a skin and general subjects b exoskeleton c teeth d hair, horns, nails e feathers f sense organs g glands h mammae EVERTEBRATA 1 Integument i pigment cells a skin and general subjects b exoskeleton c teeth, bristles, etc. d sense organs e glands f tentacles, suckers, etc. g pigment cells 2 Nervous system a general subjects b central nervous system 1 brain 2 spinal cord c accessory organs 1 paraphysis 2 parietal organ 3 pineal body 4 hypophysis 5 saccus vasculosus 6 other accessory organs d ganglia 1 cephalic ganglia 2 spinal ganglia c nerves 1 cephalic nerves 2 spinal nerves f visceral nervous system 1 para- and sympathetic nervous system 2 intramural nervous system g meninges a general subjects b diffuse nervous system c centralized nervous system 1 ganglia 2 nerves 3 nerve net d accessory organs 3 Special sense organs olfactory organs visual organs 1 eye 2 lens auditory and static organs other sense organs a chemoreceptors b visual organs c auditory and static organs d other sense organs 195 CHORDATA EVERTEBRATA 4 Skeleton a general subjects b embryonic and larval endoskeleton c skull and visceral skeleton d skeleton of trunk and tail e skeleton of girdles and extremities f joints a general subjects b larval endoskeleton c endoskeleton 5 Muscular system a general subjects b skeletal muscles c visceral muscles d muscles of extremities a general subjects b dermal muscles c internal muscles d muscles of special parts 6 Alimentary tract general subjects mouth and pharynx intestinal tract proctodaeum salivary glands liver pancreas a general subjects b mouth and pharynx c intestinal tract d hind gut e salivary glands f other digestive glands 7 Respiratory organs general subjects external gills internal gills respiratory tract and lungs air bladder a general subjects b gills and "lungs" c tracheal system 8 Heart, vascular system and blood general subjects heart vascular system 1 arterial system 2 venous system 3 capillary system blood a general subjects b heart and pulsating vessels c open vascular system d closed vascular system e blood 9 Body cavities, coelomic cavities, endothelia, lymphatic system and connective tissue a coelomic cavities b endothelia c lymphatic system; R.E.S. d connective tissue 196 a general subjects b primary body cavities c coelomic cavities d connective tissue CHORDATA EVERTEBRATA 10 Urogenital system and sexual differentiation a general subjects b kidney 1 pronephros 2 mesonephros 3 metanephros c nephric ducts, bladder d gonads 1 ovary 2 testis 3 ovariotestis e genital ducts and external genital organs f accessory glands g sexual differentiation a general subjects b excretory organs 1 protonephridia 2 nephridia 3 other excretory organs c excretory ducts d gonads 1 ovary 2 testis 3 ovariotestis e genital ducts and external genital organs f accessory glands g sexual differentiation 11 Endocrine organs a general subjects b hypophysis c thymus d thyroid gland and parathyroids e gonads f adrenals g pancreas h neurosecretion a general subjects b special endocrine glands c neurosecretion MAIN RUBRICS / DESCRIPTIVE AND COMPARATIVE EMBRYOLOGY (key on page 198; // EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY (key on page 209) /// DEVELOPMENTAL PHYSIOLOGY IV DEVELOPMENT AND GENETICS V DEVELOPMENT AND PATHOLOGY VI REGENERATION VII METAMORPHOSIS VIII SOMATIC EMBRYOGENESIS IX EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY OF PLANTS (key on page 221 ) (key on page 237) (key on page 240) (key on page 244) (key on page 247) (key on page 249) (page 249) 197 I. DESCRIPTIVE AND COMPARATIVE EMBRYOLOGY KEY 1 Theoretical problems and general questions 2 Methods and techniques 3 Para-embryological subjects a General subjects b Reproduction 4 Initial development a Primordial germ cells b Gametogenesis until completion 1 Spermatogenesis, sperm 2 Oogenesis, ovum 3 Egg membranes c Maturation d Ovulation and oviposition e Fertilization f Parthenogenesis g General subjects 5 Cleavage a Cleavage b Cell-lineage 6 Further development o[ Evertebrata a General investigations 1 General subjects 2 Complete and partial development 3 Normal tables b Embryogenesis 1 Pre-gastrulation 2 Gastrulation 3 Formation of germ layers 4 Late embryonic development c Larval development d Development of parts of the organism 1 Head 2 Extremities 3 Other parts e Development of organ systems and organs (Cf. Key on p. 195) 7 Further development of Chordata a General investigations 1 General subjects 2 Complete and partial development 3 Implantation, placentation, extra-embryonic membranes 4 Normal tables b Gastrulation 1 Pre-gastrulation 2 Gastrulation c Neurulation etc. 1 Neurulation 198 I. 1 I. 4b 2 Development of neural crest 3 Late embryonic and larval development d Development of parts of the organism 1 Head 2 Extremities 3 Tail 4 Other parts e Development of organ systems and organs (Cf. Key on p. 195) 8 Growth and differentiation a General subjects b Growth c Differentiation d Mitosis 1 Theoretical problems and general questions Fonseca Sacarrao, G. da — c E Harvey, E. Browne — b, c G 2 Methods and techniques Bryan, J. H. D. — d (9)EV + V 3 Para-embryological subjects a General subjects b Reproduction Grell, K. G. — a EV Grell, K. G. — a P Katashima, R. K. — a P Nobili, R. — a P Nyholm, K. G. — b P Sara, M. — b A Benazzi, M. — a C Monne, L. — a C Ichikawa, A. — a D Johnson, G. — a D Legrand, J. -J. — d D Ulrich, H. — b Di Alaphilippe, F. — a E Thompson, T. E. — a E Brewin, B. I. — a Sabbadin, A. — b H Baxter, E. W. — a I Gilbert, P. W. — a I Arslan, M. — a M Bartelmez, G. W. — a M Butler, H. — a M Biiyiikozer, I. — b M Duke, K. L. — a M Frankenberger, Z. — b M Hamilton, W. J. — a M Harrison, R. J. — b, c M Hiraiwa, Y. K. — a M Mandl, A. M. — c M Prasad, M. R. N. — a M Strauss, F. — c M Uchida, T. A. — a M 4 Initial development a Primordial germ cells Stagni, A. — a C Follenius, E. — a DiBerardino, M. A. — a Gipouloux, J. D. — b Duke, K. L. — a M Mandl, A. M. — c M b Gametogenesis until completion Sara, M. — a A Benazzi (Lentati), G. — a C Stagni, A. — a C Colombo, G. — a D Geigy, R. — b D Geigy, R. — b Di Larambergue, M. de — b E Masetti Zannini, A. — a E Kotani, M. — a J Kotani, M. — a L Austin, C. R. — a M Bishop, M. W. H. — a M Spermatogenesis, sperm Franzen, A. S. — a EV Kanoh, Y. — a (9)1 Dollander, A. — d (9) J Kanoh, Y. — a (9) J MacMillan, E. W. — a M Merkle, U. — a M 199 I. 4c Oogenesis, ovum Kemp, N. E. — b (9)EV+V Anteunis, A. H. J. — a D Fautrez (Firlefyn), N. J. — a D Bier, K. — a Di Greca, M. la — a Di Matuszewski, B. — a Di Bolognari, A. — a, b (9)E Bolognari, A. — c E Crowell, J. — a (9)E Pucci, I. — a E Albanese, M. P. — a G Bolognari, A. — a, b (9)G Bolognari, A. — c G Arndt, E. A. — a Koshelev, B. V. — a Yamamoto, K. — a Yamamoto, K. — b (9) Zahnd, P. J. J. — b Karasaki, S. — b (9) Salles, J. M. de — a Schreiber, G. — a Wartenberg, H. — a, c (9) Zahnd, P. J. J. — b K Hamilton, W. J. — a M Harrison, R. J. — b M Stegner, H.-E. — a (9)M Egg membranes Bellairs, M. R. — b (9)L c Maturation Ogren, R. E. — a C Dan, K. — a E Raven, Chr. P. — b E d Ovulation and oviposition Bookhout, C. G. — a C Alden, R. H. — a M Straus, F. — a M Yanagimachi, R. — a M e Fertilization Agrell, I. P. S. — b Benazzi, M. — a C Benazzi (Lentati), G. — a C Colwin, A. L. — a (9)C Colwin, L. H. — a (9)C Dan, J. C. — b C Colwin, A. L. — a (9)F Colwin, L. H. — a (9)F Colwin, A. L. — a (9)G Colwin, L. H. — a (9)G Endo, Y. — a (9)G Takashima, R. — a (9)G 200 Dettlaff, T. A. — a Ginsburg, A. S. — a, c Kanoh, Y. — a (9)1 Legault, R. O. — a Stockard, A. H. — a Kanoh, Y. — a (9)J Austin, C. R. — a M Bishop, M. W. H. — a M Hiraiwa, Y. K. — a M Piko, L. — a M Takashima, R. — a (9)M Yanagimachi, R. — a M f Parthenogenesis Benazzi, M. — a C g General subjects Benazzi (Lentati), G. — a C Magagnini, G. — a c Puccinelli, I. — a c Sawada, N. — a, b c Sawada, N. — a, b D Pasteels, J. J. — b (9)E Dan, J. C — c G Harvey, E. Browne — e, f G Filogamo, G. — c V Dollander, A. — c (9)1 Dollander, A. — c (9)M Nicholas, J. S. — a M 5 Cleavage a Cleavage (s.s.) Harris, F. T. C. — a Mancuso, V. — b EV Bookhout, C. G. — a C Ogren, R. E. — a C Fautrez (Firlefyn), N. J. — c D Haget, A. — c Di Crowell, J. — a (9)E Humphreys, W. J. — a (9)E Harvey, E. Browne — e G Hiramoto, Y. — a G Runnstrom, J. A. M. — b G Salfi, M. — a H Ginsburg, A. S. — a I Legault, R. O. — a I Stockard, A. H. — a I Sentein, P. — b, c J Lutz, H. — a L Alden, R. H. — a M Richter, K. M. — b M b Cell-lineage Verdonk, N. H. — a E I. 6a I. 6d 6 Further development of Evertebrata a General investigations General subjects Alamelu, M. G. — a P Dutta, J. — a P Mookerjee, S. — d P Mukherji, D. — a P Nyholm, K. G. — b P Waidyasekara, L. — a P Weisz, P. B. — a P Heath, H. D. — b B Wolpert, L. — a B Wyttenbach, C. R. — b B Ogren, R. E. — c, d C Legrand, J.-J. — b D Legrand, J.-J. — b Di Perry, M. M. — c (9)Di Selman, G. G. — b Di Waddington, C. H. — e Di Fonseca Sacarrao, G. da — -c, d E Schneider, D. — d F Wolpert, L. — a G Complete and partial development Grell, K. G. — a EV Grell. K. G. — a P Bouillon, J. — a (9)B Hauenschild, C. — b B Miller (Stone), F. — b B Achtelik, W. — a C Bookhout, C. G. — a C Iwata, F. — a c Monne, L. — a c Norrevang, A. — a c Nyholm, K. G. — a c Ogren, R. E. — b c Puccinelli, I. — a c Schmidt, G. A. — b c Wingstrand, K. G. — a c Battaglia, B. — b D Geigy, R. — b D Ichikawa, A. — a D Johansson, N. — a D Legendre, R. — a D Pflugfelder, O. — d D Rappaport, R., Jr. — b D Samano Bishop, A. — a D Stout, V. M. — a, b D Yoshikura, M. — a D Amy, R. L. — b Di Anderson, D. T. — a Di Counce-Nicklas, S. J. — d Di Dasgupta, B. — a Di Geigy, R. — b Di Goszwald, K. — a Di Jura, Cz. — c Di Krause, G. — c Di Krzystofowicz, A. — a Di Martin, B. A. — a Di Miya, K. — b (9)Di Larambergue, M. de — c E Thompson, T. E. — a, b E Visser, M. H. C. — a E Alaphilippe, F. — a E Portmann, A. — e, f E Endo, Y. — a (9)G Wallace, H. — b H Normal tables b Embryogenesis Fautrez, J. C. — b D Louvet, J. -P. — a Di Crowell, J. — a (9)E Pre-gastrulation Gastrulation Haget, A. — c Di Formation of germ layers Late embryonic development Verdonk, N. H. — a E c Larval development Bookhout, C. G. — a C Gidholm, L. — a C Jagersten, K. G. M. — a c Moyse, J. — a D Giles, E. T. — a Di Osanai, M. — a Di Schmidt, G. H. — a Di Thompson, T. E. — a E Moore, A. R. — a G Ubisch, L. v. — a G d Development of parts of the organism Head Verdonk, N. H. — a E Extremities Haget, A. — b Di Other parts Regondaud, J. — b E 201 I. 6e. 1 I. 7a e Development of organ systems and organs Integument Skin and general subjects Schneider, D. — b EV Bergquist, H. — b (9)D Locke, M. — a Di Schneider, D. — e F Glands Samano Bishop, A. — b D Pigment cells Cather, J. N. — a E Nervous system General subjects Niiesch, H. — c Di Poulson, D. F. — c Di Rutschky, C. W. — a Di Fonseca Sacarrao, G. da — a E Centralized nervous system Silen, J. K. P. — a F Special sense organs Auditory and static organs Fonseca Sacarrao, G. da — b E Skeleton General subjects Ubisch, L. v. — b G Muscular system General subjects Niiesch, H. — b Di Alimentary tract Intestinal tract Poulson, D. F. — a Di Salivary glands Jacob, J. — a (9)Di Sirlin, J. L. — d (9)Di Respiratory organs Heart, vascular system and blood Body cavities and connective tissue General subjects Kawakami, K. I. — b (9)E Coelomic cavities Czihak, G. — b G Urogenital system and sexual differentiation General subjects Roosen-Runge, E. C. — a EV Giles, E. T. — a Di 202 Gonads Colombo, G. — b Di Miya, K. — a Di Testis Caspari, E. W. — b Di Ovariotestis Larambergue, M. de — a E Genital ducts and external genital organs Larambergue, M. de — a E Regondaud, J. — a E Accessory glands Larambergue, M. de — a E Sexual differentiation Sara, M. — b A Battaglia, B. — a D Katakura, Y. — a D Masetti Zannini, A. — a E Endocrine organs Neurosecretion Hubl, H. — a C Aoto, T. — a D Konok, I. B. — a D 7 Further development of Chordata a General investigations General subjects Bell, L. G. E. — a H Gilbert, P. W. — b Grodzinski, Z. — b Szubinska, B. S. — a Bell, L. G. E. — a Karasaki, S. — b (9) Perry, M. M. — c (9) Selman, G. G. — b Waddington, C. H. — e Wallace, H. — a Wurmbach, H. — b Islam, A. — b K Ragozina, M. N. — a K Bellairs, M. R. — a (9)L Ragozina, M. N. — a L Saunders, J. W. — d L Spratt, N. T., Jr. — e L Wurmbach, H. — b L Saunders, J. W. — d M Complete and partial development Brewin, B. I. — a H Dybern, B. I. — a H I. 7b I. 7c Salfi, M — a H Ashley, G. T. — a V Filogamo, G. — c V Portmann. A. — a V Simonsberger, P. — c V Balon. E. K. — b. c, d Baxter, E. W. — a Brien, P. L. — d Cambar, R. — e Damas, H. F. C. — a Davies, D. H. — a Duyvene de Wit, J. J. — a Jager, B. de — a Strahan, R. — a Balinsky, B. I. — a (9)J Bavay, J. M. F. X. de — a Islam, A. — a Stephenson, N. G. — b Suminski, E. H. — a Dufaure, J. P. — a K Stephenson, N. G. — a K Vakaet, L. C. — a L Arslan, M. — a M Austin, C. R. — a M Backhouse, K. M. — b M Baevsky, J. B. — a M Bishop, M. W. H. — a M Butler, H. — a M Degenhardt, K.-H. — a M Duke, K. L. — a M Flynn, T. Thomson — c M Glenister, T. W. — c M Harvey, E. B. — a M Heuser, C. H. — a M Naaktgeboren, C. — a M Richter, K. M. — b M Schmidt, G. A. — a, c M Singer, R. — a M Swartz, G. E. — a M Uchida, T. A. — a M Wartenberg, H. — b (9)M Implantation, placentation, extra-embryonic membranes Bautzmann, H. — b K Bautzmann, H. — d (9)K Bellairs, A. d'A. — b K Ince, F. E. — a K Petry, G. — a K Bautzmann, H. — b L Bautzmann, H. — d (9)L Bellairs, M. R. — a (9)L Petry, G. — a L Alden, R. H. — a M Backhouse, K. M. — b, c M Bautzmann, H. — b M Bautzmann, H. — d (9)M Boving, B. G. — b, c M Boyd, J. D. — a M Corner, G. W., Jr. — a M Donner, M. W. — a M Flynn, T. Thomson — b M Glenister, T. W. — b M Hamilton, W. J. — b M Harris, J. W. S. — b M Harrison, R. J. — a, c M Harvey, E. B. — a M Jollie, W. J. — a M Jones, O. P. — a M Lennep, E. W. van — b M Mossman, H. W. — a M Orsini, M. C. Ward — a M Owers, N. — a, b M Petry, G. — a M Prasad, M. R. N. — c, d M Ramsey, E. M. — a, b M Strauss, F. — b M Vacek, Z. — c M Normal tables Brahma, S. K. — a J Yntema, C. L. — d K Wiertz (Hoessels), E. L. M. J. — a L Schmidt, G. A. — c M Wiertz (Hoessels), E. L. M. J. — b M b Gastrulation Ignatjeva, Mrs. G. M. Legault, R. O. — a Stockard, A. H. — a Lutz, H. — a, d Spratt, N. T., Jr. — d Alden, R. H. — a Pre- gastrulation Gastrulation (s.s.) Balinsky, B. I. — a c Neurulation etc. Neurulation (s.s.) Balinsky, B. I. — a Rossini, M. C. — a I I I L L M (9)J (9)1 J 203 I. 7d Development of neural crest Biiyukozer, I — a Falakali, M. S. — a Raunich, L. — c Koecke, H.-U. — c, e Flynn, T. Thomson — a Late embryonic and larval development Balinsky, B. I. — a Volpe, E. P. — a, d d Development of parts of the organism Head Slipka, J. — a Jongh, H. J. de — a Huber, W. — a Asling, C. W. — a Huber, W. — a Sinclair, J. G. — e Extremities Cauna, N. — b Slaby, O. — b Francois, Y. — a Hampe, A. — c Cauna, N. — b Lisowski, F. P. — b Zaaijer, J. J. P. — c Tail Filogamo, G. — b Goldie, M. — a Other parts e Development of organ and organs Integument General subjects Weber, W. — a Portmann, A. — d Cauna, N. — a Lyne, A. G. — a Exoskeleton Brien, P. L. — c Teeth Cohn, S. A. — c, d Friant, M. — b Norberg, O. V. — a Hair, horns, nails Friant, M. — e Goss, R. J. — e Lyne, A. G. — a, b Schinckel, P. G. — a, b V J J L M (9)J J V J L M M M V V I L M M M K L systems J K M M I M M M V M M M 204 Short, B. F. — a Feathers Friant, M. — d L Sense organs Cauna, N. — a M Glands Cohn, S. A. — a L Gomot, L. — a L Lutz, H. — g l Cohn, S. A. — a, b M Frankenberger, Z. — a M Lyne, A. G. — c M Mammae Kleiss, E. — b M Simonsberger, P. — b M Pigment cells Mori, Y. — b I Koecke, H.-U. — c L Moyer, F. H. — a (9)M Nervous system General subjects Baffoni, G. M. — a V Leghissa, S. — a, b V Weber, A. — a V Sala, M. — c K Dreyer, M. V. — a L Filogamo, G. — a L Hamburger, V. — a L Kallen, A. J. B. — c L Levi-Montalcini, R. — a L Baumann, J. A. — a M Csillik, B. — b M Schneider, I. — b M Kalman, G. — b M Central nervous system Baffoni, G. M. — b V Fridberg, G. — a I Smitten, N. A. — b J Corliss, C. E. — c L Lyser, Miss K. M. — a (9)L Smitten, N. A. — b L Humphrey, T. — c M Brain Ashley, G. T. — b V Nieuwenhuys, R. — a V Oksche, A. — a V Rudeberg, S. I. — a V Krabbe, K. H. — a I Krabbe, K. H. — a J I. 7c. 3 I.7e. 4 Assenmacher, LA. — a L Harkmark, W. — a L Leghissa, S. — d, i L Minelli, G. — c L Portmann, A. — b L Auroux, M. — a M Brown, J. W. — a, b M Chouard, C. H. — a M Delmas, A. — a M Friant, M. — c M Glas, P. — a M Godina, G. — c M Harkmark, W. — b M Pilleri, G. — a M Portmann, A — b M Preto Parvis, V. — c M Sensenig, E. C. — c M Spinal cord Jit, I. — b M Accessory organs Paraphysis Parietal organ Eakin, R. M. — d J Eakin, R. M. — c K Pineal body Oksche, A. — a V Kamer, J. C. v. d. — a I Thillard, M. J. — b L Venzke, W. G. — a L Hypophysis (see also under endocrine organs) Mellinger, J. — b I Assenmacher, LA. — a L Jansen, J. — a M Xavier Morato, M.J. — a M Ganglia Cephalic ganglia Eyries, Ch. — a M Spinal ganglia Nerves Peters, A. — a (9) J Filogamo, G. — b K Filogamo, G. — a L Thillard, M. J. — a L Cauna, N. — a M Cephalic nerves Ashley, G. T. — b V Sinclair, J. G. — a M Spinal nerves Visceral nervous system Para- and sympathetic nervous system Smitten, N. A. — a J Pera, L. — a K Pera, L. — a L Smitten, N. A. — a L Strudel, G. — a L Jit, I. — c M Smitten, N. A. — a M Intramural nervous system Kraus, R. — a V Vacek, Z. — a M Meninges Special sense organs Gilbert, P. W. — c I Olfactory organs Bijtel, J. H. — c Michael, M. I. — a J J Orts Llorca, F. — c L Bijtel, J. H. — d M Visual organs Eye Buyiikozer, I. — a V Bijtel, J. H. — c Melucci, N. — a J J Monteiro, W. — b J Schreiber, G. — c J Coulombre, A. J. — b, d L Meyer, D. B. — a O'Rahilly, R. — a Bartelmez, G. W. — b L L M Bijtel, J. H. — d Pilleri, G. — b M M Sinclair, J. G. — d M Lens Auditory and static organs Hagelin, L. O. — a I Bijtel, J. H. — b Joubert, P. J. — a Orts Llorca, F. — d J J L Asling, C. W. — b M Eyries, Ch. — a Goedbloed, J. F. — a M M Perles, B. — a M Other sense organs Dragomirov, N. I. — a Pehrson, G. T. — a I I Zelena, J. — a M Skeleton 205 I. 7e. 5 I. 7e. General subjects Felts, W. J. L. — a Friant, M. — e Balon, E. K. — a Sedra, S. N. — b Bellairs, A. d'A. — a Friant, M. — a Bellairs, A. d'A. — a Friant, M. — a Gray, D. J. — a Murray, P. D. F. — a Preto Parvis, V. — b Schumacher, G.-H. — b Bellairs, A. d'A. — a Brookes, M. — a Felts, W. J. L. — d Frankenberger, Z. — a Friant, M. — a Gray, D. J. — a Jit, I. — d Meyer, D. B. — c Schumacher, G.-H. — a Embryonic and larval endoskeleton Srinivasachar, H. R. — a Visser, J. G. J. — a Jurand, A. — a Barbin, Y. — a Martin, P. — a Skull and visceral skeleton Slaby, O. — a Bertmar, G. — a Pehrson, G. T. — a Srinivasachar, H. R. — b, e Bijtel, J. H. — b Joubert, P. J. — a Srinivasachar, H. R. — d Hammond, W. S. — a Kock, J. M. de — a Schumacher, G.-H. — b Srinivasachar, H. R. — c Toerien, M. J. — a Yntema, C. L. — c Doskocil, M. — a Moffat, D. B. — a Sensenig, E. C. — b Skeleton of trunk and tail Francois, Y. — a Strudel, G. — b Sensenig, E. C. — a, b Skeleton of girdles and extremities Goff, R. A. — a Norberg, O. V. — a M Olivier, G. H. G. — a M V Pineau, H. — a M I Joints J Muscular system K General subjects K Hay, E. D. — a (9)V L Holtfreter, J. K. F. — d J L Wilde, C. E., Jr. — c J L Filogamo, G. — b K L Filogamo, G. — a L L Hammond, W. S. — b L L Cihak, R. — a M M Muir, A. R. — b (9)M M Zaaijer, J. J. P. — b M M Zelena, J. — a M M Skeletal muscles M Visceral muscles M Muscles of extremities M Alimentary tract M General subjects M Albert, J. — a J Nakamura, I. — b J I Alten, P. J. van — a L K Frankenberger, Z. — a M L Nakamura, I. — b M M Solere, — a M M Mouth and pharynx Slipka, J. — a V v Dechambe, C. — a J Salser, G. M. — b K Hammond, W. S. — b L Scothorne, R. J. — a L Asling, C. W. — a M Fraser, F. C. — b M Harris, J. W. S. — a M L Kleiss, E. — a M L Massart, C. — a. c, d M L Scothorne, R. J. — a M L Walker, B. E. — a M L Zenker, W. — a, b M L Intestinal tract M Bondi, C. — c J M Wilens, S. W. — b J M Butler, H. — b M Dankmeijer, J. — e M I Miete, M. — a M L Schunzel, G. — a M M Proctodaeum Pera, L. — b I L Pera, L. — b K 206 I. 7e. 7 Pera, L. — b L Jit, I. — e M Salivary glands Liver Minelli, G. — b I Rossini, M. C. — b I Leghissa, S. — f L Jit. I. — a M Pancreas Drukker, J. — a L Donaldson, J. C. — a M Humphrey, T. — a M Respiratory organs General subjects External gills Internal gills Byczkowska (Smyk), W. — a I Respiratory tract and lungs Slaby, O. — c V Scothorne, R. J. — b L Boyden, E. A. — a M Air bladder Brien, P. L. — b I Heart, vascular system and blood General subjects Raunich, L. — a I Stephan, Fr. — a Block, M. H. — a Heart Dankmeijer, J. — a Los, J. A. — a Preto Parvis, V. — b Davies, F. — a Francis, E. T. B. — a King, T. S. — a Krediet, P. — b Latimer, H. B. — b Muir, A. R. — a Salser, G. M. — a Vascular system Brookes, M. — a Fourman, J. — a Hoefsmit, E. C. M. — a Ingen, H. C. van — b Moffat, D. B. — b Reynolds, S. R. M. — d Slijper, E. J. — a Arterial system Kraus, R. — a M V V L M M M M M M M M M M M M M M V I. 7e. 10 Moffat, D. B. — a M Nakayama, T. — b M Venous system Nakayama, T. — a M Capillary system Blood Colle (Vandevelde), A. — a Michalowski, J. — c Michalowski, J. — c J Lemez, L. — a L Portmann, A. — c L Venzke, W. G. — b L Jones, O. P. — a M Jones, O. P. — b (9)M Muir, A. R. — b (9)M Muller, G. — a M Coelomic cavities, endothelia, lymphatic system and connective tissue Coelomic cavities Quereux, P. — a M Endothelia Lymphatic system Gyllensten, L. J. W. — a M Connective tissue Urogenital system and sexual differentiation General subjects Matejka, M. — a V Cambar, R. — d J Calame, S. M. — a L Hayek, H. — a M Roosen-Runge, E. C. — a M Strauss, F. — c M Kidney Follenius, E. — b I Staugaard, B. C. — a L Staugaard, B. C. — a M Pronephros Fox, H. — a I Fox, H. — a J Jaffee, O. C. — b J Mesonephros Cambar, R. — a Hayek, H. — a M Metanephros Fourman, J. — a M Moffat, D. B. — b M 207 I. 7e. 11 I. 8b Nephric ducts, bladder Gonads D'Ancona, U. — a D'Ancona, U. — a Follenius, E. — a Mohsen, Th. — a Thiebold, J. J. — a Vivien, J. H. — a Aoto, T. — b Ranzoli, F. — a Scali, V. — a Stefan, Y. — a K Limborgh, J. v. — a L Asayama, S. — b M Clermont, Y. — a M Lindh, J. — a M Mandl, A. M. — a M Vacek, Z. — a M Ovary Ashley, G. T. — c V Testis Backhouse, K. M. — a M Ovariotestis Genital ducts and external genital organs Mohsen, Th. Thiebold, J. J. — a Vivien, J. H. — a Raynaud, A. — a Stefan, Y. — a Dankmeijer, J. — c Forsberg, J.-G. — a Massart, C. — b Ross, J. R. W. — a Stegner, H.-E. — b Accessory glands Hesselsjo, R. — a Nilsson, S. — a Sexual differentiation Chieffi, G. — a Aoto, T. — b Chieffi, G. — a Limborgh, J. v. — b Lutz, H. — h Lutz (Ostertag), Y. — f Endocrine organs General subjects Hay, D. — b Hay, D. — b Hinrichsen, K. — b 208 I I I K K M M M M (9)M M M I J J L L L L M M Hypophysis (see also under nervous system) Baker, Miss B. I. — a I Dimond, M. T. — a K Bartelmez, G. W. — c M Lennep, E. W. van — a M Thymus Bosinelli, L. — b } Michelucci, S. — a L Thyroid gland and parathyroids Leblond, C. P. — a V Slipka, J. — b V Michelucci, S. — b L Young, B. A. — a M Gonads Adrenals Smitten, N. A. — a J Smitten, N. A. — a L Benirschke, K. — a M Smitten, N. A. — a M Pancreas Dieterlen (Lievre), F. — a L Neurosecretion Aoto, T. — a I Fridberg, G. — a I Aoto, T. — a J 8 Growth and differentiation a General subjects Agrell, I. P. S. — a Dettlaff, T. A. — b I Dettlaf f, T. A. — b J b Growth Felts, W. J. L. — a Legrand, J.-J. — c, e D Larambergue, M. de — c E Fox, H. — a I Srinivasachar, H. R. — e I Fox, H. — a J Tuft, P. H. — a J Weber, W. — a J Wurmbach, H. — b J Nurjehan, B. — a L Thillard, M. J. — a L Wurmbach, H. — b L Boyden, E. A. — a M Latimer, H. B. — a, b M Olivier, G. H. G. — a, b M Pineau, H. — a, b M Schumacher, G.-H. — a M I. 8c I 8d c Differentiation d Mitosis Alamelu, M. G. — a P Agrell, I. P. S. — a Dutta, J. — a P Weisz, P. B. — b P Mookerjee, S. — d P Costello, D. P. — c C Mukherji, D. — a P Fautrez (Firlefyn), N. J. — c D Waidyasekara, L. — a P fTuJ»- T- — f £ Ogren, R. E.-c. d C Hiramoto. Y- a G Baffoni. G. M. - a V Ba Horn G. M. - b V tt v; t^l ^ u lowr Dettlaft, 1 . A. — b 1 ? \ i T {) l Dettlaff> T. A.-b J Trmkaus J. P - a G £ Uffofd _ fa DiBerardmo M. A.-b Sentein, P.-b J Matsumoto, A. — a (9) J Weisz PB. — b ?/? Jf tCn' «; A' ~" b I Corliss, C. E. — c L Weber, W. — a J Kgll6n A. J. B. — c L Clark, H. — c L Nurjehan, B. — a L Smitten, N. A. — b L Corliss, C. E. — a M Trinkaus, J. P. — a L Fujii, T. — a M Heckerman, R. O. — a M Schinckel, P. G. — b M Muir, A. R. — b (9)M Weisz, P. B. — b M II. EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY KEY 1 Theoretical problems and general questions 2 Methods and techniques 3 Para-embryological subjects a General subjects b Reproduction 4 Initial development a Primordial germ cells b Gametogenesis until completion 1 Spermatogenesis, sperm 2 Oogenesis, ovum 3 Egg membranes c Maturation d Ovulation and oviposition e Activation and fertilization f Parthenogenesis g General subjects 5 Cleavage a Cleavage b Cell-lineage 6 Further development of Evertebrata a General investigations 1 General subjects 2 Complete and partial development b Embryogenesis (and larval development) 1 Pre-gastrulation 2 Gastrulation 209 II. 1 II. 3b 3 Formation of germ layers 4 Late embryonic development 5 Larval development c Induction, determination etc. d Development of parts of the organism 1 Head 2 Extremities 3 Other parts e Development of organ systems and organs (Cf. Key on p. 195) 7 Further development of Chordata a General investigations 1 General subjects 2 Complete and partial development 3 Implantation, placentation, extra-embryonic membranes b Embryogenesis (and larval development) 1 Pre-gastrulation 2 Gastrulation 3 Neurulation 4 Development of neural crest 5 Late embryonic and larval development c Induction, determination etc. 1 Induction 2 Determination 3 Regulation 4 Organization d Development of parts of the organism 1 Head 2 Extremities 3 Tail 4 Other parts e Development of organ systems and organs (Cf. Key on p. 195) 8 Growth and differentiation a General subjects b Growth c Differentiation d Mitosis 1 Theoretical problems and Cruz (de Losada), general questions Harvey, E. Browne — b G 2 Methods and techniques Bell, E. — f Bookhout, C. G. — a C Castiglioni, M. C. — d ( 1 1 ) Di Jones, B. M. — a (H)Di Sakai, H. — a G Hempel, G. — a I Sakai, Y. T. — a I 210 M. V. de la — b L Beatty, R. A. — a M Glass, L. E. — b M Hicks, S. P. — a (4)M 3 Para-embryological subjects a General subjects b Reproduction Kerr, N. S. — a P Magis, N. — a C Ranzoli, F. — b C II. 4a Vannini, E. — b Harvey, E. Browne — d Michalowski, J. — b Bilewicz, S. — a Clegg, E. J. — a Clegg, E. J. — b Hiraiwa, Y. K. — a Nebel, L. A. — b Uchida, T. A. — a C G J M M (4)M M (5)M M 4 Initial development a Primordial germ cells Geyer (Duszynska), I. — c Di Amanuma, A. — a J DiBerardino, M. A. — a J Simon, D. — a (11)L b Gametogenesis until completion Brien, P. L. — a B Aubry, R. — a J Bounoure, L. — a J Austin, C. R. — a M Bishop, M. W. H. — a M Spermatogenesis, sperm Dan, J. C. — a Tahmisian, T. N. — c Harrison, R. G. — a Narbaitz, R. — b Oogenesis, ovum Ubbels, G. A. — a E Runnstrom, J. A. M. — c G Egg membranes c Maturation Dan, K. — a E Beetschen, J. CI. — d J d Ovulation and oviposition Kawakami, K. I. — e E Dettlaff, T. A. — c (11)1 Dettlaff, T. A. — c (11 )J Nadamitsu, S. N. — a (11)M Yanagimachi, R. — a M e Activation and fertilization (9)EV (4)Di M M Dan, J. C. — a Dan, J. C. — b Katsura, S. — a Rulon, G. O. — c Runnstrom, J. A. M. — a Dettlaff, T. A. — a Ginsburg, A. S. — a, c (9)EV C G (5)G G I I Kille, R. A. — a Sakai, Y. T. — b Yamamoto, T. — a Austin, C. R. — a Beatty, R. A. — b Bishop, M. W. H. — a Hiraiwa, Y. K. — a Katsura, S. — a Piko, L. — a Yanagimachi, R. — a £ Parthenogenesis Astaurov, B. L. — a Runnstrom, J. A. M. — a Rostand, J. — a g General subjects Horstadius, S. — a Rulon, G. O. — c Runnstrom, J. A. M. — c Sakai, H. — a Clavert, J. M. J. — b Devillers, Ch. — b Ruch, J. V. — a Sakai, Y. T. — a, b Zahnd, P. J. J. — c Curtis, A. S. G. — c Lovtrup, S. — a Sambuichi, H. — a Clavert, J. M. J. — b Zahnd, P. J. J. — c Clavert, J. M. J.— b Nicholas, J. S. — f Nicholas, J. S. — g Williams, D. R. — a 5 Cleavage a Cleavage (s.s.) Harris, F. T. C. — a Costello, D. P. — b Henley, C. — b Haget, A. — c Harvey, E. Browne — a Marsland, D. A. — a, d Farinella (Ferruzza), N. Ginsburg, A. S. — a Curtis, A. S. G. — c Sentein, P. — a Nadamitsu, S. N. — b Nicholas, J. S. — g Tarkowski, A. K. — a Williams, D. R. — a II. 5a I I I M M M M M M M Di G J G iG G G (5 (4) K K L M (11)M (11)M (5)C (5)C Di (4)G (4)G H I J (5)J (11)M (11)M M (11)M 211 II. 5b II. 6d b Cell-lineage Raven, Chr. P. — g (4)E Verdonk, N. H. — a (5)E Verdonk, N. H. — b (4)E 6 Further development of Evertebrata a General investigations General subjects Alamelu, M. G. — a P Dutta, J. — a P Fulton, C. M. — b P Kerr, N. S. — a P Mookerjee, S. — d P Mukherji, D. — a P Sussman, M. — a P Sussman, R. R. — a P Waidyasekara, L. — a P Weisz, P. B. — a P Yow, F. W. — a (4)P Ganguly, B. — a A Heath, H. D. — b B Wolpert, L. — a B Costello, D. P. — a C Henley, C. — a C Monne, L. — a C Querner, H. — b (4)C Sugino, H. — a C Geigy, R. — d D Castiglioni, M. C. — d ( 1 1 ) Di Jones, B. M. — a (ll)Dx Jura, Cz. — a Di Krause, G. — d (H)Di Reggi, L. M. de — a Di Schnetter, M. — a Di Steinberg, D. M. — a Di Takami, T. — b ( 1 1 ) Di Morrill, J. B. — a (5)E Gustaf son, T. — c ( 5 ) G Wolpert, L. — a G Wolsky, A. — c (5)G Complete and partial development Guerrier, P. — a C Amy, R. L. — a (4)Di Anderson, D. T. — a Di Counce-Nicklas, S. J. — c Di Takami, T. — a Di Harvey, E. Browne — a (4)G b Embryogenesis (and larval development) 212 Holm, K. A. — a D Krause, G. — b Di Louvet, J.-P. — a Di Sander, K. — a Di Raven, Chr. P. — e (4)E Pregastrulation Gastrulation Haget, A. — c Di Moore, A. R. — c G Formation of germ layers Late embryonic development Raven, Chr. P. — g (4)E Verdonk, N. H. — a (5)E Verdonk, N. H. — b (4)E Larval development Alleaume (Bordes), N. — a Di Pohley, H.-J. — b Di Steinberg, D. M. — b Di Czihak, G. — a G c Induction, determination, etc. Fulton, C. M. — b P Schwartz, V. — a P Mookerjee, S. — a B SanyaJ, S. — a, b B Sinha, A. K. — a, b B Naylor, E. — a C Ehn, J. A. — a (5)D Holm, K. A. — a D Oka, H. — c D Sekiguchi, K. — a D Krause, G. — b Di Sander, K. — a Di Clement, A. C. — a E Czihak, G. — a G Horstadius, S. — a G Hultin, J. M. T.~a G Lallier, R. A. — a G Runnstrom, J. A. M. — d G d Development of parts of the organism Head Rulon, G. O. — b (5/7)C Haget, A. — a Di Schoeller, J. — a Di Vignau, J. — a Di Raven, Chr. P. — g (4)E Verdonk, N. H. — a (5)E Verdonk, N. H. — b (4)E II. 6e. 1 Extremities Haget. A. — b Di Other parts Naylor, E. — a C Muth, F. W. — a Di Pohley, H.-J. — a Di Schwartz, V. — b Di c Development of organ systems and organs Integument Skin and general subjects Wehrmaker, A. — c Di Pigment cells Kato, M. — a Di Wehrmaker, A. — c Di Cather, J. N. — a E Nervous system Haget, A. — b Di Niiesch, H. — a Di Special sense organs Visual organs Kanatani, H. — a C Kido, T. — b (5)C Kishida, Y. — a (5)C Borstel, R. C. von — a Di Skeleton Larval endoskeleton Okazaki, K. — b G Muscular system Alimentary tract Mouth and pharynx Kido, T. — a C Respiratory organs Heart, vascular system and blood Body cavities and connective tissue General subjects Kawakami, K. I. — d E Coelomic cavities Czihak, G. — b G Urogenital system and sexual differentiation Gonads Highnam, K. C. — b (6)Di Sexual differentiation Stagni, A. — b B Ranzoli, F. — c C Katakura, Y. — a D II. 7a Legrand, J.-J. — a D Aubry, R. — b E Endocrine organs 7 Further development of Chordata a General investigations General subjects Nicholas, J. S. — c Bell, L. G. E. — a H Wallace, H. — b H Alescio, T. — a (11 )V Monesi, V. — a (11 )V Perry, M. M. — a (5)V Waddington, C. H. — c (5)V Clavert, }. M. J. — b I Hisaoka, K. K. — a, d (5)1 Ruch, J. V. — a I Welander, A. D. — b I Zahnd, P. J. J. — c I Bell, L. G. E. — a J Bieliavsky, N. — a Billett, F. S. — a (5) J Bondi, C — b J Brahma, S. K. — c (5) J Brunst, V. V. — a J Cate, G. ten — b (4) J Cheney, R. H. — f (5) J Curtis, A. S. G. — a, b (11)] Curtis, A. S. G. — c J Elsdale, T. R. — a (11)] Flickinger, R. — a (8) J Hamilton, L. — c (5) J Hartung, E. W. — a Jones, K. W. — a (11)1 Kamel, A. — a (5) J Kawakami, I. — b (5) J Mangold, O. — a J Marconnet, R. — a (5) J Newth, D. R. — b (5)J Neogy, R. K. — a (5) J Rossi, A. — a J Takaya, H. — b J Testa v. Bappenheim, I. — a Wallace, H. — a Wehrmaker, A. — a (4) J Wehrmaker, A. — b J Wolsky, A. — b Wolsky, A. — c (5) J Clavert, J. M. J. — b Raynaud, A. — c K 213 II. 7b II. 7b Zahnd, P. J. J. — c K Bell, E. — d (11)L Bermann, F. — a L Bilewicz, S. — b L Billett, F. S. — b (5)L Brahma. S. K. — c (5)L Clavert. J. M. J. — b L Curtis, A. S. G. — a. b (11)L Hamilton, H. L. — c (5)L Hasek, M. — a L Kamel, A. — a (5)L Kawakami, I. — b (5)L Konigsberg, I. R. — b (11)L Kropp, B. N. — a (5)L Lefford, F. — a (1 1 )L Lutz, H. — e (4)L Lutz (Ostertag), Y. — d (4)L Mulherkar, L. — a L Neogy, R. K. — a (5)L Nicholas, J. S. — h L Nicolet, G. — a (5)L Steinberg, M. S. — b L Veneziano, P. P. — b (4)L Bermann, F. — a M Borghese, E. — a (11)M Cheney, R. H. — b (5)M Curtis, A. S. G. — a (11)M Dagg, C. P. — a M Gitlin, G. — a M Haggqvist, G. — a M Hicks, S. P. — a (4)M Horikawa, M. — a (11)M Kawakami, I. — b (5)M Lefford, F. — a (11)M May, R. M. — a M May, R. M. — b (11)M Menkes, B. — e M Mercier (Parot), L. — b (6)M Mercier (Parot), L. — c (5)M Mulnard, J. G. — c (11)M Nicholas, J. S. — f, h M Nicholas, J. S. — g (11)M Nicholas, J. S. — 1 (4)M Packer, A. D. — a M Richter, K. M. — a (11)M Tuchmann-Duplessis, H. — c (6)M Tuchmann-Duplessis, H. — d (5)M Waelsch, S. G. — a M Complete and partial development Hamdorf, K. — a (4)1 Hempel, G. — a I 214 Jurovitsky, J. G. — a Lillelund, K. — a Lutz, H. — c Lutz (Ostertag), Y. — c Oppenheimer, J. M. — a Brauckman, E. S. — c Stephenson, N. G. — b Stephenson, N. G. — a Lutz, H. — b Menkes, B. — c Weston, J. A. — a Wolff, Et. — a Austin, C. R. — a Bijelic, N. — a Bishop, M. W. H. — a Domac, B. — a Degenhardt, K.-H. — b Frank, Z. — a Harvey, E. B. — a McLaren, A. — c Skreb, N. — c, d Swartz, G. E. — a Tarkowski, A. K. — a, b Implantation, placentation, extra-embryonic membranes Watterson, R. L. — d Bilewicz, S. — a Boving, B. G. — a Buchanan, G. D. — a Glenister, T. W. — e Harvey, E. B. — a Nebel, L. A. — b Orsini, M. C. Ward — b Owers, N. — c Prasad, M. R. N. — b Wrba, H. — b b Embryogenesis (and larval development) Bautzmann, H. — a Green, E. Ufford — a Ikushima, N. — a Nakamura, O. — a, d Takaya, H. — c Watanabe, T. — a Wilens, S. W. — a, c Grabowski, C. T. — b Lutz, H. — d Lutz, H. — f Lutz (Ostertag), Y. — e McKenzie, J. — b (1)1 (4)1 I I (11)1 (5)J J K L L (10)L L M (4)M M (4)M M (4)M (4)M (11)M (4)M M M L M M M (11)M (4)M (5)M M (11)M M (11)M V (5)J J J (4)J (4)J J L L 11)L 11)L (5)L II. 7c Nakamura, I. — a L Nebel.L. A. — a (4)L Pertusa, J. — a L Schlesinger, A. B. — b L Shoger, R. L. — b (5)L Weston, J. A. — a (10)L McLaren. A. — c (11)M Nadamitsu, S. N. — b (11)M Bijelic, N. — a (4)M Skreb, N. — c (4)M Pre-gasttulation Ignatjeva, G. M. — b I Gastrulation Castigli (Pitotti), M. — a Ignatjeva, G. M. — a, b Lovtrup, S. — a J Michael, M. I. — b J Neurulation Development of neural crest Falakali, M. S. — a J Michael, M. I. — c Raunich, L. — c J Andrew, A. — a L Koecke, H.-U. — c, e L Late embryonic and larval development Mikami, Y. — b V Mangold, O. — c J c Induction, determination, etc. Sakai, Y. T. — b I Michael, M. I. — b Raunich, L. — b Spofford, W. R. — a J Grabowski, C. T. — b L Spratt, N. T., Jr. — d L Induction Ortolani, G. — a H Ignatjeva, G. M. — a Babb, J. D. — a Brahma, S. K. — b Clayton (Freedman), R. M. — f Curtis, A. S. G. — c Englander, H. — a Falakali, M. S. — a Gallera, J. — b Gebhardt, D. O. E. — a (5) Hama, T. — a Holtfreter, J. K. F. — a, b Iyeiri, S. — a II. 7c Jacobson, A. G. — a, b, c Johnen, A. G. — a, b Kawakami, I. — c Lallier, R. A.— b Leikola, A. H. A. — a Leussink, J. A. — a Mifune, S. — a Nieuwkoop, P. D. — a, b, c Notarnicola, L. C. — b Reyer, R. W. — b Rzehak, K. F. — a Sala, M. — a, b Saxen, L. O. — a, b Sirlin, }. — g Sladecek, F. — b Toivonen, S. I. — a Woellwarth, C. v. — a, b, c Yamada, T. — a Yntema, C. L. — a Benoit, J. A. A. — a Boersma, W. — a Gallera, J. — b Grabowski, C. T. — a Hara, K. — a Iyeiri, S. — a Kieny, M. A. — b Schowing, J. — a Strudel, G. — c Kawakami, I. — c Determination Biiyukozer, I. — a Stefanelli, A. — a Becker, U. — b Denis, H. A. — a Eakin, R. M. — a Jacobson, D. C.-O. — a Lehman, H. E. — a Lehman, L. M. Y. — a Leikola, A. H. A. — a Mangold, O. — c Nieuwkoop, P. D. — a Rzehak, K. F. — a Wehrmaker, A. — b Wilde, C. E., Jr. — a Raynaud, A. — c Nakamura, I. — a Nicholas, J. S. — b Regulation Cury, G. — a Testa v. Bappenheim, I. — (11 L )L L L L L L L L M V V (11 (11 K L M J J 215 II. 7d II. 7e. 2 Amprino, R. M. — b L Hampe, A. — a, b L Shoger, R. L. — a L Tarkowski, A. K. — a, b M Organization Boterenbrood. E. C. — a J Nieuwkoop, P. D. — c J Stefanclli, A. — c (11)J Nicolet, G. — a (5)L Stefanelli, A. — c, g (11)L d Development of parts of the organism Head Mangold, O. — b J Woellwarth, C. v. — c J Extremities Finnegan, C. V. — a V Butler, E. G. — b (4) J Fautrez, J. C. — a J Gabie (Gubbay), V. — a J Notarnicola, L. C. — a, b J Ruben, L. N. — b J Wilde, C. E., Jr. — a ( 1 1 ) J Amprino, R. M. — a, b, c L Barasa, A. — a L Bell, E. — a L Cairns, J. M. — a L Camosso, M. E. — a L Kieny, M. A. — b, c L Kocher, W. — d (4)L Hampe, A. — a, b L Pinot, M. — a (1 1 )L Rickenbacher, J. — d (4)L Saunders, J. W. — a, c L Slaby, O. — d L Sullivan, G. E. — a, b L Theiler, K. — d (4)L Tondury, G. — d (4)L Zwilling, E. — c L Cairns, J. M. — a M Kocher, W. — d (4)M Rickenbacher, J. — d (4)M Slaby, O. — d M Theiler, K. — d (4)M Tondury, G. — d (4)M Tail Farinella (Ferruzza), N. — a J Holtfreter, J. K. F. — a J Nakamura, O. — b Other parts 216 Wilde, C. E., Jr. — a Lawrence, I. — a Wenger, B. S. — c e Development of organ and organs Integument Skin and general subjects Hisaoka, K. K. — c Jones, R. O. — a Bell, E. — b Rawles, M. E. — a New, D. A. T. — a Giroud, A. — e New, D. A. T. — a Exoskeleton Teeth Leblond, C. P. — b Niizima, M. — b Hair, horns, nails Chase, H. B. — b Chase, H. B. — c Ebling, F. J. — a Goss, R. J. — e Feathers Cairns, J. M. — b Kuhn, O. — b Saunders, J. W. — b Sengel, Ph. — b Sense organs Glands Mammae Pigment cells Goodrich, H. B. — a Hama, T. — c Mori, Y. — a Bagnara, J. T. — a Dalton, H. C. — a Hama, T. — c La Spina, R. — b Lehman, H. E. — a Lehman, L. M. Y. — a Hamilton, H. L. — b Koecke, H.-U. — c Menkes, B. — a Sengel, Ph. — a Chase, H. B. — b Nervous system General subjects Stefanelli, A. — a, b Gallera, J. — a (H)J L L systems (5)1 (9/1DJ (11)L L (11)L M (11)M (10)V (11)M M (4)M M M L L L (11)L (6) (11)L L L (11)L M V J II. 7e. 3 II 7e. 3 Notarnicola, L. C. — a Spofford, W. R. — b J Coulombre, A. J. — c L Coulombre, J. L. — c L Courtey, B. — a (11)L Gallera, J. — a L Godina, G. — a, b (H)L Hamburger, V. — a L Levi-Montalcini, R. — a L Rossi, A. — b J Stefanelli, A. — g (11)L Wenger, B. S. — a L Central nervous system Bergquist, H. — a V Boterenbrood, E. C, — a Corner, M. A. — a (11 Eakin, R. M. — a Gallera, J. — b Jacobson, D. C.-O. — a Nieuwkoop, P. D. — a, c Takaya, H. — a Woellwarth, C. v. — a Bell, E. — e Gallera, J. — b Grabowski, C. T. — a Lyser, K. M. — b McCallion, D. J. — a Menkes, B. — d Veneziano, P. P. — c Walker, B. E. — e Watterson, R. L. — d, e Eayrs, J. T. — a Brain Capanna, E. — a Denis, H. A. — b McMurray, V. M. — a J Hara, K. — a L Gitlin, G. — a M Hicks, S. P. — c (10)M Witkam, W. G. M. — a (4)M Spinal cord Steding, G. — a L Accessory organs Paraphysis Parietal organ Pineal body Andres, M. Y. — b (8)L Venzke, W. G. — c M Hypophysis (see also under endocrine organs) Eakin, R. M. — a J (11 (11)L L L IL L L (5)L (10)L L (6)M Saccus vasculosus Mellinger, J. — a Ganglia Cephalic ganglia Jacobson, A. G. — c Michael, M. I. — c Spinal ganglia Nerves Visceral nervous system Vacek, Z. — b Para- and sympathetic nervous system Lemez, L. — b Meninges Special sense organs Jacobson, A. G. — c Olfactory organs Michael, M. I. — b Orts Llorca, F. — c Visual organs Coulombre, A. J. — a Coulombre, J. L. — a M Eye Buyiikozer, I. — a V Popov, V. V. — b V Stone, L. S. — d ( 1 1 ) J Stroeva, O. G. — c J Amprino, R. M. — d L Coulombre, A. J. — b L Coulombre, J. L. — b L Harrison, J. R. — a (6)L Whittaker, J. R. — a (11)L Hicks, S. P. — c (10)M Pierro, L. J. — c M Stroeva, O. G. — a, b, c M Lens Eakin, R. M. — a J Jacobson, A. G. — a Reyer, R. W. — b Tahara, Y. — a J Boersma, W. — a (11 )L McKeehan, M. S. — a L Auditory and static organs Yntema, C. L. — a J Benoit, J. A. A. — a L Orts Llorca, F. — d L Kocher, W. — c M Rickenbacher, J. — c M Theiler, K. — c M Tondury, G. — c M 217 II. 7e. 4 II. 7c. 8 Skeleton General subjects Felts. W. J. L. — b Holtzer, H. — b Leblond, C. P. — b Bellairs, A. d'A. — a Bellairs, A. d'A. — a Teixeira, I. — a Watterson, R. L. — b Zaaijer, J. J. P. — a Zahnd, P. J. J. — a Bellairs. A. d'A. — a Felts. W. J. L. — e Novel (Rerolle), M. — a Zaaijer, J. J. P. — a Embryonic and larval endoskeleton Grabowski, C. T. — c Jurand, A. — a Skull and visceral skeleton Michael, M. I. — c Schowing, J. — a Harris, J. W. S. — c Skeleton of trunk and tail Matsuda, N. — a Menkes, B. — d Strudel, G. — c Kocher, W. — b Rickenbacher, J. — b Theiler, K. — b Tondury, G. — b Skeleton of girdles and extremities Joints Muscular system General subjects Holtzer, H. — a Holtfreter, J. K. F. — d Straznicky. Ch. — a Skeletal muscles Takata, C. — a Konigsberg, I. R. — a Watterson, R. L. — b Visceral muscles Muscles of extremities Sullivan, G. E. — a, b Alimentary tract General subjects Mikami, Y. — b Albert, J. — a Cambar, R. — b Nakamura, I. — b 218 V (10)V K L (5/ll)L (6)L (11)L L M (4)M (11)M (11)M L L J L M (4)1 L L M M M M V J L ( 1 1 ) J L (6)L Nakamura, O. — c J Wilens, S. W. — a J Alten, P. J. van — a L Douarin (Chauvac), N. M. le — a L Nakamura, I. — b M Mouth and pharynx Dechambe, C. — a J Scothorne, R. J. — a L Scothorne, R. J. — a M Walker, B. E. — j (6)M Intestinal tract Wilens, S. W. — b J Andrew, A. — a L Sigot, M. — a (11)L Watterson, R. L. — b (6)L Weniger, J. P. — a (11 )L Weniger, J. P. — a (11)M Proctodaeum Manelli, H. — b J Salivary glands Liver Marin (Lewin), L. — a (H)L Niizima, M. — c (H)L Niizima, M. — c (11)M Pancreas Drukker, J. — b V Frye, B. E. — a J Wells. L. J. — a (11)M Respiratory organs General subjects External gills Internal gills Respiratory tract and lungs V J J J Dameron, F. — b (11)L Air-bladder Heart, vascular system < md blood General subjects Block, M. H. — b (4)M Heart Fautrez, J. C. — a J Jacobson, A. G. — b J Jaffee, O. C. — a J Beylstein, J. — a L Cruz (de Losada), M. V. de la — b L De Haan, R. L. — a L Douarin, G. H. le — a (4)L Duffey, L. M. — a L Roberts (Montgomery) C. — a (11)L V I J L L L L L L (11)L L (11)M II. 7e. 9 Rychter, Z. — a L Roberts (Montgomery), C.-a (H)M Vascular system Arterial system Rychter, Z. — a L Venous system Capillary system Blood Haggqvist, G. — b Silberzahn, P. — a Masui, Y. — b Cury, G. — c Dollander, A. — e Fritsch, J. P. — a Gassiole, D. — a Mitchison, N. A. — a Mori, T. — a Pourreau (Schneider), N. M. — b Rychter, Z. — c Watterson, R. L. — d Pourreau (Schneider), N. M. — b Coelomic cavities, endothelia, lymphatic system and connective tissue Coelomic cavities Endothelia Lymphatic system; R.E.S. Mitchison, N. A. — a L Gyllensten, L. J. W. — a (6)M Connective tissue Edds. M. V., Jr. — a J Urogenital system and sexual differentiation General subjects Cambar, R. — d Gipouloux, J. D. — a Manelli, H. — a J Forsberg, J.-G. — b (6)M Kidney Pronep/jros Fox, H. — b J Lynn, W. G. — b J Shin-Ike, T. — a J Mesonephros Cambar, R. — a Manelli, H. — a J Metanephcos II. 7e. 10 Calame, S. M. — b (11)L Nephric ducts, bladder Bijtel, }. H. — a J Gonads Salzgeber, Miss B. — b (5)V Amanuma, A. — b (6)J Aoto, T. — b J Bounoure, L. — a J Foote, Ch. L. — c ( 1 1 ) J Foote, F. Martindale — c ( 1 1 ) J Ghirardelli, E. — b J Mancino, G. — a J Sabbadin, A. — a (6) J Vannini, E. — a J Limborgh, J. v. — a L Narbaitz, R. — a L Salzgeber, B. — c (11)L Stenger ( Haf f en ) , K. E. — a ( 1 1 ) L Weniger, J. P. — a (11 )L Wolff, Em. — a (H)L Wolff, Et. — d, h (11)L Furusawa, M. — a ( 1 1 ) M Salzgeber, B. — c (11 )M Weniger, J. P. — a (11)M Wolff, Em. — a (11)M Wolff, Et. — d (11)M Ovary Belka-Grzybek, A. — b M Forni, Miss S. — a (6/1 1)M Testis Ovaciotestis Genital ducts and external genital organs Ruch, J. V. — b V Lutz (Ostertag), Y. — a (11)L Wolff, Em. — a (11 )L Wolff, Et. — d (11)L Wolff, Em. — a (11)M Wolff, Et. — d (11)M Sexual differentiation Salzgeber, B. — a (4/5) V Wroblewski, R. — c V Chieffi, G. — a (6)1 Miyamori (Yamamoto), H. — a (6) Okada, Y. K. — a, b Yamamoto, T. — b Aoto, T. — b Chieffi, G. — a (6). Michalowski, J. — a Miyamori (Yamamoto), H. — a (6)J 219 II. 7c. 11 II. 8b (11 (11 (11 Takahashi, H. — a Limborgh, J. v. — b Lutz (Ostertag), Y. — b Narbaitz, R. — a Preda, V. — d Stenger (Haffen), K. E. — Wolff, Em. —a Wolff, Et. — b Wolff, Et. — d, h Burns, R. K. — a Asayama, S. — a Wolff, Em. — a Wolff, Et. — d Endocrine organs General subjects Iwasawa, H. — a Iwasawa, H. — a Stalsberg, H. — a Hypophysis (see also under nervous system) Guardabassi, A. — a Guardabassi, A. — b Dimond, M. T. — a Cury, G. — b Grignon, G. — a Petrovic, A. — a Thyroid gland and parathyroids Guardabassi, A. — a Pflugfelder, O. — e Dieterlen (Lievre), F. — d Hilfer, S. R. — b Pflugfelder, O. — e Watterson, R. L. — f Gruca, St. — b Gonads Adrenals Pancreas Dieterlen (Lievre), F — a Dieterlen (Lievre), F. — b 8 Growth and differentiation a General subjects Geigy, R. — d D Rulon, G. O. — a (5)G Wurmbach, H. — a (6)V Dettlaff, T. A. — b I Capanna, E. — b (11)1 Dettlaff, T. A. — b Elsdale, T. R. — a (11 )J Foote, Ch. L. — a (11 )J 220 (6)J L L L L L L L )L M (6/1 1)M (11)M (11)M (5)J J (6)K L L (11)M (5)J (5)J (H)L (11)L (5)L (5/6)L M (6)L (11)L Foote, F. Martindale — a (H)J Jones, K. W. — a (11)J Nakamura, O. — d Abercrombie, M. — a ( 1 1 ) L Bell, E. — d, e (11)L Bermann, F. — a L Coulombre, A. J. — c L Dameron, F. — a (4/11 ) L Godina, G. — a (H)L Harrison, J. R. — a (6)L Konigsberg, I. R. — a L Konigsberg, I. R. — b ( 1 1 ) L Lamont, D. M. — a (H)L McKeehan, M. S. — a L Oldfield, F. E. — a (11)L Stephenson, E. M. — a (H)L Wolff, Et — f (11)L Zwilling, E. — b (11 )L Abercrombie, M. — a ( 1 1 ) M Bermann, F. — a M Lamont, D. M. — a (11)M Richter, K. M. — a (11)M Stephenson, E. M. — a ( 1 1 ) M Wolff, Et. — f (11)M b Growth Felts, W. J. L. — b Nicholas, J. S. — c Rasmond, R. — a A Fulton, C. M. — a B Querner, H. — b (4)C Nuesch, H. — a Di Marin, G. — a V Schreiber, B. — a (11 )V Fox, H. — b J Frye, B. E. — a J Green, E. Uf ford — a (5) J Heath, H. D. — a J Cairns, J. M. — a L Chaytor, D. E. B. — a L Ebert, J. D. — d (6)L Godina, G. — b ( 1 1 ) L McCallion, D. J. — b (5)L Schlesinger, A. B. — b L Teixeira, I. — a (5/1 1)L Beatty, R. A. — b M Cairns, J. M. — a M Felts, W. J. L. — e (4)M Harrison, G. A. — a (4)M Hofman, L. — a M Muller, M. — a (5)M Skreb, N. — b (5)M II. 8c c Differentiation Moscona, A. A. — a, c EV + V Alamelu, M. G. — a Dutta, J. — a Mookerjee, S. — d Mukherji, D. — a Waidyasekara, L. — a Yow, F. W. — a (4)P Costello, D. P. — a C Henley, C. — a C Bier, K. — b (10)Di Poulson, D. F. — b Di Tahmisian, T. N. — a (4)Di Hultin, J. M. T. — a G Stefanelli, A. — a V Neyfakh, A. A. — a I Trinkaus, J. P. — a Adhikari, S. — b (11) J Becker, U. — b (H)J Bieliavsky, N. — a Bondi, C. — b J Briggs, R. W. — a Curtis, A. S. G. — a, b (11)J Edds, M. V., Jr. — a J Jones, R. O. — a (9/11) J Masui, Y. — a J Mookerjee, S. — c (H)J Nurjehan, B. — b (11) J Sladecek, F. — a J Stefanelli, A. — c (11) J Stefanova, Z. — b Subtelny, S. — a, b Takata, C. — a (11)J Wilde, C. E., Jr. — b Yntema, C. L. — a J Adhikari, S. — a (5)L Barasa, A. — b (11)L Bell, E. — b (11)L Butros, J. M. — a (11 )L Clayton (Freedman), R. M. — b (11 )L Curtis, A. S. G. — a, b (11)L Godina, G. — d (11 )L Hamilton, H. L. — b Hilfer, S. R. — b Lefford, F. — b Menkes, B. — c Mulherkar, L. — a Niizima, M. — d Stefanelli, A. — c Trinkaus, J. P. — a Whittaker, J. R. — a Wilde, C. E., Jr. — e Zwilling, E. — a Achtelik, W. — c Curtis, A. S. G. — a Gruca, St. — a Lefford, F. — b Levak, B. — a Nicholas, J. S. — j Novel (Rerolle), M. — a Skreb, N. — a Walker, B. E. — g Wilde, C. E., Jr. — e Wrba, H. — b d Mitosis Weisz, P. B. — b Costello, D. P. — b Costello, D. P. — c Henley, C. — b Marsland, D. A. — d Chevremont, M. J. J. — a Marin, G. — a Schreiber, B. — a Dettlaff, T. A. — b Beetschen, J. CI. — d Dettlaff, T. A. — b Sentein, P. — a Weisz, P. B. — b Adhikari, S. — a Stefanelli, A. — f Corliss, C. E. — b Muller, M. — a Skreb, N. — b Weisz, P. B. — b II. 8d (11)L (11)L (11)L L L (11)L (11)L L (11)L L (11)L (6)M (11)M (6)M (11)M M M (11)M M M M (11)M P (5)C C (5)C (4)G (5/ll)V V (11)V I J J (5)J J (5)L (5/ll)L (5)M (5)M (5)M M III. DEVELOPMENTAL PHYSIOLOGY KEY 1 Theoretical problems and general questions 2 Methods and techniques 221 Para-embryological subjects a General subjects b Reproduction Initial development a Primordial germ cells b Gametogenesis until completion 1 Spermatogenesis, sperm 2 Oogenesis, ovum 3 Egg membranes, capsule fluids c Maturation d Ovulation and oviposition e Activation and fertilization f Parthenogenesis g General subjects Cleavage a Cleavage b Cell-lineage Further development of Evertebrata a General investigations 1 General subjects 2 Complete and partial development 3 Development of movement and behaviour b Embryogenesis (and larval development) 1 Pre-gastrulation 2 Gastrulation 3 Formation of germ layers 4 Late embryonic development 5 Larval development c Induction, determination etc. d Development of parts of the organism 1 Head 2 Extremities 3 Other parts e Development of organ systems and organs (Cf. Key on p. 195) Further development of Chordata a General investigations 1 General subjects 2 Complete and partial development 3 Implantation, placentation, extra-embryonic membranes, embryonic fluids 4 Development of movement and behaviour b Embryogenesis (and larval development) 1 Pre-gastrulation 2 Gastrulation 3 Neurulation 4 Development of neural crest 5 Late embryonic and larval development c Induction, determination etc. 1 Induction 2 Determination 3 Regulation >22 III. 1 III. 4b 4 Organization d Development of parts of the organism 1 Head 2 Extremities 3 Tail 4 Other parts e Development of organ systems and organs (Cf. Key on p. 195) 8 Growth and differentiation a General subjects b Growth c Differentiation d Mitosis 9 Embryonic nutrition 1 Theoretical problems and general questions Cairns, }. M. — c Wilde, C. E., Jr. — f Raven, Chr. P. — i EV + V Popov, V. V. — a V Nishimura, H. — c M 2 Methods and techniques Bell, E. — f Bryan, J. H. D. — d Johnson, G. — b Roussev, G. K. — a New, D. A. T. — b New, D. A. T. — b Roncoroni, G. — a, b 3 Para-embryological subjects a General subjects Allen, R. D. — a b Reproduction Hauenschild, C. — a Herlant (Meewis), H. — b Chaigneau, J. — a Charniaux (Cotton), H. — c Borstel, R. C. von — c Grosch, D. S. — a Ulrich, H. — b Dan, K. — c Oka, H. — b Watanabe, H. — a Gilbert, P. W. — a Sedra, S. N. — a Prasad, M. R. N. — e Baevsky, J. B. — a Blandau, R. J. — c (9)EV + V D J (H)L (11)M (2)M (3)EV + V C c D (6)D Di (4/5)Di Di G H H I J K (6)M (11)M Cheney, R. H. — b (5)M Frankenberger, Z. — b M Glenister, T. W. — a (6)M Hunt, E. L. — b (1)M Katsh, S. — a (8)M Langman, J. — b (8)M McLaren, A. — a (6)M McLaren, A. — d M Prasad, M. R. N. — e M Reynolds, S. R. M. — b M Runner, M. N. — a (6)M Tampion (Thomason), D. — a M Wells, L. J. — b M Young, W. C. — a (6)M Young, W. C. — b M 4 Initial development a Primordial germ cells Mulnard, J. G. — b (2)C Mulnard, J. G. — b (2)E Kaltenbach, J. C. — a (7/8)G Mulnard, J. G. — b (2)G Perlmann, H. P. — a (7/8)G Lopashov, G. V. — c ( 1 1 ) J b Gametogenesis until completion Nigon, V. — a (7)C Nigon, V. — a (7)Di Nigon, V. — a (7)G Yanagisawa, T. — b (7)G Bieber, S. — a (2/7/10) J Kotani, M. — a J Kotani, M. — a L Austin, C. R. — a M Beatty, R. A. — c M Bishop, M.W. H. — a M Braden, A. W. H. — a, b M 223 III. 4c III. 4e Bryan, J. H. D. — a Goldberg, E. — a Norman, C. — d Spermatogenesis, sperm Tyler, A. — c Tyler, A. — c Bernstein, G. S. — a Rawls, J. M. — a Tyler, A. — c Bernstein, G. S. — a Rostand, J. — c Stefanelli, A. — d Stefanelli, A. — d Tyler, A. — c Bernstein, G. S. — a Bishop, D. W. — a Bishop, D. W. — c Carlson, G. L. — a Harrison, R. G. — a Katsh, S. — a Lacy, D. — a Lofts, B. — a MacMillan, E. W. — a Mann, T. — a Norman, C. — b Norman, C. — c Tampion (Thomason), D. Tyler, A. — c Oogenesis, ovum Ginzburg, G. I. — a Kemp, N. E. — b Bielanska (Osuchowska), Z. — Ghirardelli, E. — a Fautrez (Firlefyn), N. J. Zaffagnini, F. — a Bier, K. — a Borstel, R. C. von — d Greca, M. la — a King, R. C. — a Perdrix, S. — a Bolognari, A. — a, b Geilenkirchen, W. L. M. Raven, Chr. P. — h Ubbels, G. A. — b Bolognari, A. — a, b Ficq, A. A. — a Ficq, A. A. — c Hiramoto, Y. — b La Spina, R. — a 224 (2)M (7)M (7)M (1)C (1)E (1)G (7)G (1)G (DJ (5)J J L (1)L (1)M (7)M (8)M M M (8)M (6)M (6)M M (7)M (1)M (4)M a M (1)M (2) (9)EV + V > (2)B (2)C — a (2)D D (2)Di (7)Di (2)Di Di (7/10)Di (9)E — a E (2)E (2)E (9)G (10)G (7)G (3)G (2)H Arndt, E. A. — a Clavert, J. M. J. — a Hisaoka, K. K. — f Yamamoto, K. — a Zahnd, P. J. J. — b Ficq, A. A. — a, b Ficq, A. A. — c Humphries, A. A., Jr. — Petrucci, D. — c Salles, J. M. de — a Schreiber, G. — a Szarikowska, Z. — a Wartenberg, H. — a Clavert, J. M. J. — a Zahnd, P. J. J. — b Clavert, J. M. J. — a Schlesinger, A. B. — a Glass, L. E. — a Stegner, H.-E. — a Wartenberg, H. — b Egg membranes, capsule Bluemink, J. G. — a Morrill, J. B. — b Humphries, A. A., Jr. — Minganti, A. — b (2)1 (6)1 (2)1 (2)1 I (10)J (7)J (2)J (DJ (2)J (2)J (2)\ (2)J (6)K K (6)L (3/7)L (7/8)M (2)M (2)M fluids E (2/7)E b (7)J J c Maturation Glenister, T. W. — d (6) J Humphries, A. A., Jr. — a Bryan, J. H. D. — b (4)M Glenister, T. W. — d (6)M d Ovulation and oviposition Dan, K. — c G Dettlaf f, T. A. — c (11)1 Dettlaff, T. A. — c (11) J Sedra, S. N. — a J Blandau, R. J. — a M Harper, M. J. K. — a M Strauss, F. — a M e Activation and fertilization Colwin, A. L. — a C Colwin, L. H. — a C Colwin, A. L. — a F Colwin, L. H. — a F Aketa, K. — a (7)G Allen, R. D. — b (3)G Colwin, A. L. — a G Colwin, L. H. — a G Hiramoto, Y. — c G Hori, R. — a (3)G III. 4f Hori, R. — b (7)G Ishihara, K. — b (7)G Ishikawa, M. — a G Katsura, S. — a G Maggio, R. — a (1 )G Sugiyama, M. — a G Swann, M. M. — a G Tyler, A. — a G Oka, H. — b H Watanabe, H. — a H Dettlaff, T. A. — a I Ginsburg, A. S. — b, c I Hamano, S. — a (3/7)1 Hori, R. — a (3)1 Hori, R. — b (7)1 Ito, S. — a, b Ito, S. — c (5)1 Kemp, N. E. — c Zotin, A. I. — b I Bernstein, G. S. — b J Kemp, N. E. — c Shaver, J. R. — a (7/8) J Zotin, A. I. — b Austin, C. R. — a M Bishop, M. W. H. — a M Braden, A. W. H. — a M Edwards, R. G. — a (8)M Katsura, S. — a M Piko, L. — a M Williams, D. R. — b (6)M f Parthenogenesis Ishikawa, M. — a G Sugiyama, M. — a G g General subjects Dalcq, A. M. — b (2)EV Konopacka, B. — d (2)C Sawada, N. — a C Chaigneau, J. — a D Sawada, N. — a D Bluemink, J. G. — a E Clement, A. C. — b (2)E Nijenhuis, E. D. — a (5)E Nijenhuis, E. D. — b (10)E Pasteels, J. J. — a (2)E Pasteels, J. J. — b (9)E Aketa, W. — b (2/7) G Backstrom, S. A. A. — a ( 1 ) G Cheney, R. H. — d (1/5)G Dan, J. C. — c G Dan, K.— b (7)G Ishihara, K. — a Kinoshita, S. — b Markman, B. — a Runnstrom, J. A. M. — c Sakai, H. — b Tyler, A. — b Dalcq, A. M. — a Filogamo, G. — c Aketa, K. — b Ishida, J. — a Ito, S. — d Autelin, R. — a Dick, D. A. T. — a Dollander, A. — a Dollander, A. — b Lovtrup, S. — b Dalcq, A. M. — a, b Katsh, S. — a 5 Cleavage a Cleavage (s.s.) Harris, F. T. C. — a Nicholas, J. S. — k Crane, R. K. — a Konopacka, B. — d Mulnard, J. G. — b Fautrez (Firlefyn), M. J. Rappaport, R., Jr. — c Bluemink, J. G. — a Clement, A. C. — b Geilenkirchen, W. L. M. Humphreys, W. J. — a Mulnard, J. G. — b Nijenhuis, E. D. — a Nijenhuis, E. D. — c, d Raven, Chr. P. — c Cheney, R. H. — d Giudice, G. — a Kojima, M. K. — a Markman, B. — a Marsland, D. A. — b Marsland, D. A. — c Marsland, D. A. — e Mulnard, J. G. — b Rappaport, R., Jr. — c Runnstrom, J. A. M. — b Sakai, H. — c Swann, M. M. — a Tyler, A. — b Yoneda, M. — a Zeuthen, E. — a III. 5a (7)G G (10)G G (3)G G (2)H V (2/7)1 (7)1 (3)1 J (7)J (3)J J J (2)M (8)M — b — c (7)EV (2)C (2)C (5)D (3)D E (2)E E (9)E (2)E (5)E E E (1/5)G (7)G G (10)G G (7)G (4/7)G (2)E (3)G G (7)G G G (3)G (1)G 225 III. 5b III. 6c Dalcq, A. M. — a (2)H Zotin, A. I. — b I Rappaport, R., Jr. — c (3) J Roussev, G. K. — a J Roussev, G. K. — b (7) J Sentein, P. — c (2) J Shaver, J. R. — c J Sirakami, K. I. — a J Sirakami, K. I. — b (2) J Zotin, A. I. — b J Dalcq, A. M. — a (2)M b Cell-lineage 6 Further development of Evertebrata a General investigations General subjects Allen, R. D. — a (3)EV Crane, R. K. — b (7)EV Hama, T. — b (5)EV Mancuso V. — a ( 7 ) E V Reverberi, G. — a ( 7 ) E V Spratt, N. T., Jr. — f EV Mookerjee, A. — a (4)P Mookerjee, S. — e (4) P Sussman, M. — a P Sussman, R. R. — a P Yow, F. W. — b (4)P Yow, F. W. — c (5/7)P Banerjee, S. — a A Ganguly, B. — b A Lahiri, D. — a A Mookerjee, S. — b A Hale, L. J. — a B Wyttenbach, C. R. — b ( 7) B Achtelik, W. — b (2)C Brun, J. L. — a (4)C Buznikov, G. A. — a (7)C Horstmann, H. J. — b (1/7)C MacRae, E. J. Krugelis — a ' (7)C MacRae, E. J. Krugelis — b (2)C Nigon, V. — a (7)C Nonnenmacher, J. — a (7)C Urbani, E. — b (7)C Dutrieu, J. — a (7)D Fautrez (Firlefyn), N. J. — b (5)D Roulston, W. J. — a ( 1 /7) D Bednjakova, T. A. — c (5/7) Di David, J. R. — a Di Buznikov, G. A. — a (7)Di 226 Dutrieu, J. — a (7)D Flechon, J. — a (7/10) D Goto, T. — b (5)D Jura, Cz. — b (2)D Laufer, H. — b (7)D Liidtke, H. — a D Ludwig, D. — a, b (1/7)D Nigon, V. — a (7)D Pflugfelder, O. — a (6)D Ramenskaja, G. P. — a (5/7)D Reggi, L. M. de — a D Rockstein, M. — a D Rockstein, M. — b (7)D Sirlin, J. L. — f (2)D Tandler, C. J. — a (2)D Urbani, E. — a (7)D Voy, A. — b D Wright, T. R. F. — a (2)D Bluemink, J. G. — a E Buznikov, G. A. — a (7)E Horstmann, H. J. — a (1/7)E Morrill, J. B. — a (5)E Backstrom, S. A. A. — b (7)G Black, R. E. L. — a (8)G Black, R. E. L. — b (1)G Dalmon, J. — a (7)G Denny, P. C. — a (7)G Ficq, A. A. — c (7)G Haour, F. — a (1)G Horstadius, S. — b (5)G Immers, J. — a, b (7)G Ishihara, K. — a (7)G Markman, B. — a (10)G Nigon, V. — a, b (7)G Perdrix, S. — b (7/10)G Pimpinelli, G. — a (7)G Spiegel, M. — a (7)G Tyler, A. — d (8)G Wolsky, A. — c (5)G Yanagisawa, T. — a (7)G D'Anna, T. — a (10)H Durante, M. C. — a (7)H Mansueto, C. — a (10)H Markert, C. L. — d H Molinaro, M. — a (7)H Patricolo, E. — a (7)H Wallace, H. — b H Complete and partial development Schwartz, V. — a ~~ P Bielanska (Osuchowska), Z. — b B Konopacka, B. — d (2)C III. 6b Schmidt. G. A. — b Chaigneau, J. — a Legendre, R. — a Bodenstein, D. — c Counce-Nicklas, S.J. — c Fourche, }. — a Mulherkar. L. — c Perrayon, R. — a George, J. C. — a Morrill. J. B.— b Giudice, G. — a Kaltenbach, J. C. — a Merle, S. — a Monroy, A. — a Perlmann, H. P. — a Development of movement behaviour Bautzmann, H. — c Schneider, D. — a Buznikov, G. A. — a, b Buznikov, G. A. — a Buznikov, G. A. — a. b b Embryogenesis (and larval development) Mulnard, J. G. — b Fautrez, J. C. — b Colombo, G. — c Clement, A. C. — b Geilenkirchen, W. L. M. — a Geilenkirchen, W. L. M. — b Mulnard, J. G. — b Raven, Chr. P. — a, d Raven, Chr. P. — f Cheney, R. H. — d ( Gustafson, T. — a Mulnard, J. G. — b Tyler, A. — b Dalcq, A. M. — a Pre-gastrulation Gastrulation Formation of germ layers Late embryonic development Moyse, J. — b Timmermans, L. P.M. — a Larval development Michon, J. — a Moyse, J. — b Daillie, J. — a Ito. T. — b, c (1 C D D Di Di Di 7)Di Di E (2/7)E (7)G (7/8)G (7)G (7)G (7/8)G and EV EV (7)C (7)Di (7)E (2)C D (7)Di (2)E E (5)E (2)E (5)E (2)E I/5)G G (2)G G (2)H D (2)E (6)C D Di Di III. 6e. 10 Osanai, M. — a Di Osanai, M. — b (7)Di Timmermans, L. P. M. — a (2)E Kinoshita, S. — a G c Induction, determination, etc. Bookhout, C. G. — b, c D Ehn, J. A. — a (5)D Backstrom, S. A. A. — a ( 1 ) G Lallier, R. A. — a (2/7) G Runnstrom, J. A. M. — d G d Development of parts of the organism e Development of organ systems and organs Integument Glands Samano Bishop, A. — b Timmermans, L. P. M. — a Pigment cells Kato, M. — a Cather, J. N. — a Nervous system Centralized nervous system Pflugfelder, O. — b Special sense organs Skeleton General subjects Kawakami, K. I. — c Timmermans, L. P.M. — a Okazaki, K. — a (2)D (2)E Di E V E (2)E (10)G Larval endoskeleton Okazaki, K. — b Muscular system Alimentary tract Intestinal tract Ito, T. — b Salivary glands Jacob, J. — a Jacob, J. — b Kato, K. — a Sirlin, J. L. — c Sirlin, J. L. — d Sirlin, J. L. — e Respiratory organs Heart, vascular system and blood Body cavities and connective tissue Urogenital system and sexual differentiation 227 Di (9)Di (2)Di (2/10)Di (2/10)Di (9)Di (2)Di III. 6e. 11 III. 7a Of Gonads Highnam, K. C. — b (6)Di Testis Park, H. D. — a B Caspari, E. W. — b (7)Di Sexual differentiation Hauenschild, C. — a C Charniaux (Cotton), H. — a, c, d (6)D Legrand, J.-J-. — a (6)D Endocrine organs Special endocrine glands Pflugfelder, O. — c (9)Di Neurosecretion Hauenschild, C. — a C Michon, J. — a C Aoto, T. — a D Konok, I. B. — a D Konok, I. B. — b (7)D Alaphilippe, F. — b E 7 Further development Chordata a General investigations General subjects Bell, L. G. E. — a H Rao, S. R. V. — a (2)H Alescio, T. — a (11 )V Allen, R. D. — a (3)V Andreoli, V. — a (7)V Castigli (Pitotti), M. — c (7)V Clark, H. — b (11)V Fedoroff, S. — a (4/7) V Hama, T. — b (5)V Hartwig, H. — a (6)V Kuhn, O. — a (6)V Liedke, K. B. — a ( 2/5/ 1 1 ) V Liotti, F. S. — c (6)V Monesi, V. — a (H)V Perry, M. M. — a (5/7) V Vyasov, O. E. — c ' (8)V Waddington, C. H. — c (5/7) V Battle, H. I. — a, b, c (5)1 Baxter, E. W. — c (2)1 Devillers, Ch. — a I Dimond, M. T. — b (1/5/10)1 Gilbert, P. W. — b I Hamano, S. — b (7/10)1 Hisaoka, K. K. — a, d (2/5)1 Ishida, J. — a (7)1 228 Querner, H. — a (6)1 Trinkaus, J. P. — b, c I Wilde, C. E., Jr. — g (7)1 Backstrom, S. A. A. — b (7) J Barbieri, F. D. — b, c (2) J Bell, L. G. E. — a } Billett, F. S. — a (5) J Brachet, J. L. A. — b, c (7) J Brachet, J. L. A. — d (5)} Brahma, S. K. — c (5) J Denis, H. A. — c (7)J Deuchar, E. M. — a (7)] Deuchar, E. M. — b (7/ 10) J Ficq, A. A. — b (10) J Ficq, A. A. — c (7) J Flickinger, R. — a (8) J Goto, T. — a (7) J Goto, T. — b (5) J Green, E. Uf ford — c (7) J Hamilton, L. — c (5) J Horn, E. C — b (7) J Hunt, E. L. — a (10) J Kato, Y. — b (7) J Minelli, G. — a (7) J Malamed, S. — a J Moore, B.C. — b (10) J Muller, K. E. — a (7) J Nace, G. W. — a, b (7/8) J Nedvidek, J. — a (7) J Neogy, R. K. — a (5) J Newth, D. R. — b (5) J Norman, C. — a (7)} Ohno, S. — a (7)j Pasquini, P. — a (7)J Pavanelli, C. — a (7) J Petrucci, D. — a (7) J Rappaport, R., Jr. — a J Raunich, L. — e (6) J Romanovsky, A. — a (8) J Rossi, M. R. — a (7) J Selman, G. G. — a (3) J Sirlin, J. L. — b (10) J Spiegel, M. — a, b (7) J Stefanelli, A. — e (2) J Steinberg, M. S. — a J Suminki, E. H. — a J Takata, K. — a (7) J Tencer, R. — d (1)J Triplett, E. L. — a (8) J Urbani, E. — a (7) J Waddington, C. H. — a (10)J III. 7a Wallace, H. — a (2)J Wilde, C. E., Jr. — d (7/1DJ Wolsky, A. — b J Wolsky, A. — c (5)J Yamana, K. — a (7)J Clark, H. — a (1)K Ragozina, M. N. — a K Backstrom, S. A. A. — b (7)L Barbieri, F. D. — b (2)L Bell, E. — d (11)L Billett, F. S. — b (5)L Brachet, J. L. A. — c (7)L Brachet, j. L. A. — d (5)L Brahma, S. K. — c (5)L Clark, H. — a (1)L Clayton ( Freedman ) , R. M. — d (8)L Croisille, Y. — c (8)L DeHaan, R. L. — b L Deuchar, E. M. — a (7)L Deuchar, E. M. — b (7/10)L Freeman, G. — a (2)L Friedman, H. — a (8)L Grabowski, C. T. — e (1/7)L Hamilton, H. L. — a (7)L Hamilton, H. L. — c (5)L Hasek, M. — a L Hasek, M. — b (8)L Herrmann, H. — b (7)L Klein, N. W. — a (7)L Knight, P. F. — a (7)L Knight, P. F. — b (7/8)L Koecke, H.-U. — b L Kulangara, A. C. — b (8)L Kuru, M. — c (6)L Langman, J. — a (8)L Minelli, G. — a (7)L Moog, F. — a (7)L Miiller, K. E. — a (7)L Neogy, R. K. — a (5)L Pavanelli, C. — a (7)L Preda, V. — a, c (1/4)L Preda, V. — b (1)L Ragozina, M. N. — a L Rinaldini, L. M. — b (7)L Romanoff, A. L. — a L Romijn, C. — a, c (1)L Rossi, M. R. — a (7)L Russo-Caia, S. — a (7)L Ruth, R. F. — a (8)L Ruth, R. F. — b (4/8)L III. 7a Sorokin, S. P. — a (2/9/1 1)L Spratt, N. T., Jr. — e L Stefanelli, A. — e (2)L Steinberg, M. S. — b L Titova, I. I. — a (8)L Trinkaus, J. P. — b, c L Wenger, B. S. — d (8)L Wenger, B. S. — e (2)L Alexander, G. — a M Appella, E. — a M Borghese, E. — a (11 )M Braden, A. W. H. — b M Brambell, F. W. R. — a ( 8 ) M Caspari, E. W. — a M Edwards, R. G. — a (8)M Fitzgerald, L. R. — a (4)M Fitzgerald, L. R. — b, c (1)M Glass, L. E. — a (7/8) M Halliday, R. — a (8)M Hasek, M. — b (8)M Hemmings, W. A. — a ( 8 ) M Horikawa, M. — b (7/1 1)M Huygnard, C. — a M Knight, P. F. — a (7)M Knight, P. F. — b (7/8)M Leathern, J. H. — a (7)M Lojda, Z. — a (2)M Markert, C. L. — b (7)M Martin, B. F. — a (2)M Miller, J. A., Jr. — b (1/4)M Miller (Stone), F. — a (1/4)M Minelli, G. — a (7)M Morris, I. G. — a (8)M Mulnard, J. G. — a (7)M Perkowska, E. Moser — a (7)M Reynolds, S. R. M. — f M Roncoroni, G. — a (2)M Roncoroni, G. — b (2/9) M Russo-Caia, S. — a (7)M Skowron (Cendrzak), A. — a (8)M Sorokin, S. P. — a (2/9/1 1)M Spisak (Plonka),L — a (8)M Testa v. Bappenheim, I. — b M Urbani, E. — b (7)M Waelsch, S. G. — a M Walker, B. E. — d (2)M Wiertz (Hoessels), E. L. M. J. — c (2)M Wilkinson, W. J. C. — a (2)M Wrba, H. — a (1/11)M Yamana, K. — a (7)M 229 III. 7b III. 7b Zabinski, J. — a (8)M Complete and partial development Filogamo, G. — c V Vyasov, O. E. — b (8)V Baxter, E. W. — b Hamdorf, K. — a (1/4)1 Jurovitsky, J. G. — a (2)1 Kanoh, Y. — b (2)1 Lillelund, K. — a (1/4)1 Yamamoto, T. S. — a (2)1 Zotin, A. I. — a (1)1 Averkina, R. F. — a (8)J Badinez, O. — a (2)1 Coleman, J. R. — b (2/7)) Keck, K. — a (7)1 Legname, A. H. — a (1/7)1 Legname, A. H. — b (7)] Lynn, W. G. — a (6)1 Nace, G. W. — c (2/8)] Nicholas, J. S. — d, e (2/7) J Obika, M. — a (7)1 Roussev, G. K. — a Roussev, G. K. — b (7)) Shaver, J. R. — d (8)J Alten, P. J. van — b (8)L Averkina, R. F. — a (8)L Badinez, O. — a (2)L Ebert, J. D. — e (8)L Fraser, R. C. — a L George, J. C. — a L Kato, Y. — a (7)L Overton, J. H. — a L Rudnick, D. — a (7)L Schalekamp, M. A. D. H. — a (7/8)L Wilt, F. H. — b (7)L Austin, C. R. — a M Badinez, O. — a (2)M Baevsky, J. B. — a (6)M Bishop, D. W. — b (8)M Bishop, M. W. H. — a M Harper, M. J. K. — b M Nicholas, J. S. — d, e (2/7)M Schmidt, G. A. — a M Skreb, N. — f (1)M Stein, K. F. — b (2)M Wartenberg, H. — b (2)M Implantation, placentation. extra-embryonic membranes embryonic fluids Bautzmann, H. — c Bautzmann, H. — b Petry, G. — a Bautzmann, H. — b Berg, G. G. — a Petry, G. — a Romijn, C. — b Willier, B. H. — a Alexander, G. — a Anderson, J. W. — a Bautzmann, H. — b Berg, G. G. — a Blandau, R. J. — b Boving, B. G. — b, c Corner, G. W., Jr. — b De Feo, V. J. — a Harper, M. J. K. — b Jollie, W. P. — a Kulangara, A. C. — a Kulangara, A. C. — c Long, W. N. — a Mercier (Parot), L. — b Petry, G. — a Piris, F. — a Prasad, M. R. N. — d Ramsey, E. M. — c Tibbitts, F. D. — a Tibbitts, F. D. — b Development of movement and behaviour Bautzmann, H. — c Armstrong, P. B. — b Baxter, E. W. — d Gilbert, P. W. — c Armstrong, P. B. — b Roofe, P. G. — a Szekely, G. — a Wenger, B. S. — f Wenger, E. L. — a Straznicky, Ch. — b Szentagothai, J. — a Hooker, D. — a, b, c Lisowski, F. P. — a Rugh, R. — d b Embryogenesis (and larval development) Hishida, T. — a (1/7)1 Ishida, J. — a (7)1 Nakano, E. — a (1/7)1 Trinkaus J. P. — c V (2)K K (2)L (2)L L L (2/7)L M (2/7)M (2)M (2)M M M M M M (2)M (7)M M M (6)M M (2/7)M (2)M M (2)M (10)M EV+V (5) L L M M (4)M 230 III. 7c III. 7d Badinez, O. — a (2)1 Barbieri, F. D. — c (2)J Bieber, S. — a (2/7/10)J Green, E. Ufford — a (2/5) J Horn, E. C. — a (7)1 Ikushima, N. — a 1 Legname, A. H. — a (U7)l Legname, A. H. — b (7)1 Selman, G. G. — a (3)J Sirakami, K. I. — b (2)J Tiedemann, H. — c (7)1 Vainio, E. T. — b (8)J Badinez, O. — a (2)L Harrison, J. R. — b (1/10)L Lavarack, J. O. — a (2)L McKenzie, J. — a (1/7)L McKenzie, J. — b (1/5)L Rinaldini, L. M. — a (7)L Shoger, R. L. — c (2/5)L Spratt, N. T., Jr. — a L Spratt, N. T., Jr. — b (7)L Trinkaus, J. P. — c L Badinez, O. — a (2)M Dalcq, A. M. — a (2)M Skreb, N. — f (1)M Pre-gastrulation Ignatjeva, G. M. — b Gastrulation Ignatjeva, G. M. — b Zotin, A. I. — b Tencer, R. — c Zotin, A. I. — b Neurulation Brauckman, E. S. — b Rossini, M. C. — a Brauckman, E. S. — a Development of neural crest Late embryonic and larval development Finnegan, C. V. — b Matsumoto, J. — a c Induction, determination, Induction Sasaki, N. — a Sasaki, N. — c Becker, U. — a Clayton (Freedman), R. M. Eakin, R. M. — b Gebhardt, D. O. E. — a I I (DJ J (2/7)1 1 (2)L (2/8)V (7)1 etc. (7)V (3/7)V J -i 1 (9)1 (5/7)1 Hama. T. — a (7) J Harrebomce, A. E. — a Ikenaga, T. — a (8)J Iyeiri, S. — a, b J Karasaki, S. — a (2) J Kohonen, P. J. — a Lallier, R. A. — b (2/7)J Liedke, K. B. — b (10) J Mifune, S. — a, b J Reyss-Brion (Ducreau), M. — b (4)J Sala, M. — b J Sasaki, N. — b J Saxen, L. O. — a, b J Sirlin, J. L. — g J Tencer, R. — b J Tiedemann, H. — a (7) J Tiedemann, H. — b Tiedemann (Waechter), H. — a Tiedemann (Waechter), H. Toivonen, S. I. — a Vahs, W. — a Vainio, E. T. — a Woerdeman, M. W. — b Bagnara, J. T. — b Benoit, J. A. A. — a Ebert, J. D. — f Iyeiri, S. — a Kieny, M. A. — b Schreiber, B. — b Woerdeman, M. W. — b Kawakami, L. — a Determination Tiedemann, H. — a Tiedemann, H. — b Tiedemann (Waechter), H. (7)1 -b 1 1 (2)1 (8)J (2)J (9)L L L L L (11)L (2)L M (7)1 1 V)j -b J (7)1 (2)H M Tiedemann (Waechter), H. Wilde, C. E., Jr. — b Regulation Whittaker, J. R. — b Organization Kawakami, I. — a d Development of parts of the organism Head Jongh, H. J. de — a Milaire, J. — c (2)M 231 III. 7e. 1 Extremities Milaire, J.— a (2)V Kieny, M. A. — c L Milaire, J. — c (2)M Tail Other parts e Development of organ systems and organs Integument Skin and general subjects Kemp, N. E. — a (2/10)J Bell, E. — c (3/7) L Sengel, Ph. — c (5)L Wilt, F. H. — c (7/ll)L Preto Parvis, Mrs. V. — d (2)M Exoskeleton Teeth Brouwer, P.J. — a (10)V Dankmeijer, J. — b (10)V Pourtois, M. — a (2)M Hair, horns, nails Chase, H. B. — b M Short, B. F. — a M Feathers Bell, E. — c (3/7)L Sengel, Ph. — c (5)L Sense organs Glands Gomot, L. — a L Lutz, H. — g L Cohn, S. A. — b (2)M Mammae Pigment cells Hama, T. — c (7)1 Hishida, T. — b I Matsumoto, J. — a (7)1 Mori, Y. — b (7)1 Takeuchi, K. — a (7)1 Tomita, H. — a I Yamamoto, T. — c I Bagnara, J. T. — a (6)J Hama, T. — c (7)J Obika, M. — a (7)J Wilde, C. E., Jr. — b (7)J Ebert, J. D. — c (7/8)L Koecke, H.-U. — d (7)L Chase, H. B. — b M Smitten, N. A. — c (6)M Nervous system III. 7e. 2 General subjects Whittaker, J. R. — b (2)H Leghissa, S. — e (7)V Wender, M. B. — a (2/7)V Ando, S. — a (3)1 Bertolini, B. — a (2)J Jones, R. O. — b (8/H)J Kimmel, D. L., Jr. — a (7)J Bertolini, B. — a (2)L Dreyer, M. V. — a (2)L Leghissa, S. — g L Wenger, B. S. — a (7)L Central nervous system Boell, E. J. — b (7)J Corner, M. A. — a (1 1 ) J Roofe, P. G. — a (2/7) J Wenger, B. S. — f (2/7)J Wenger, E. L. — a (2/7)J Boell, E. J. — b (7)L Gayet, J. F. — d (3/7)L Kallen, A. J. B. — a (2)L McCallion, D. J. — c (2/7)L Veneziano, P. P. — d (5/7)L Wyttenbach, C. R. — a (7)L Brain Oksche, A. — a V Gaze, R. M. — a J Andres, M. Y. — c (2)L Assenmacher, I. A. — a L Bonichon, A. — a (2)L Gayet, J. F. — a, b (7)L Gayet, J. F. — c (2)L Langman, J. — d (8)L Schalekamp, M. A. D. H. — a (7/8)L Valmin, K. — a (2)L Gyllensten, L. J. W. — b M Spinal cord Szekely, G. — a J Burt, A. — a (7)L Straznicky, Ch. — b L Szentagothai, J. — a L Wenger, B. S. — b (7)L Accessory organs Paraphysis Parietal organ Pineal body Oksche, A. — a Andres, M. Y. — a Stalsberg, H. — a Venzke, W. G. — a V (2)L L L 232 III. 7e. 3 Hypophysis (see also under endocrine organs) Mellinger, J. — b I Doer (Schott), J. — a J Andres, M. Y. — c (2)L Saccus vasculosus Mellinger, J. — a I Ganglia Nerves Cephalic nerves Spinal nerves Csillik, B. — a (2)M Kalman, G. — a (2)M Schneider, I. — a (2)M Visceral nervous system Para- and sympathetic nervous system Smitten, N. A. — a J Smitten, N. A. — a L Smitten, N. A. — a M Intramural nervous system Meninges Special sense organs Popov, V. V. — a V Reynolds, S. R. M. — f M Olfactory organs Visual organs Stone, L. S. — e J Coulombre, A. J. — a L Coulombre, J. L. — a L Langman, }. — c (8)L Eye Vyasov, O. E. — a (7/8)V Popov, V. V. — b V Becker, U. — c J Ber, A. — a (6) J Gaze, R. M. — a Melucci, N. — a (2) J Monteiro, W. — b (2) J Schreiber, G. — c (2) J Stroeva, O. G. — c J Amprino, R. M. — d (2)L Coulombre, A. J. — b, d L Coulombre, J. L. — b L Herrmann, H. — c (7)L Meyer, D. B. — a (2)L O'Rahilly, R. — a (2)L Sinclair, J. G. — d M Stroeva, O. G. — c M Lens Sasaki, N. — a (7)V III. 7e. 6 Cate, G. ten — a (7/8) J Cate, G. ten — a (7/8)L Doorenmaalen, W.J. van — a (2/7)L Papaconstantinou, J. — a (7/8)L Auditory and static organs Benoit, J. A. A. — a L Milaire, J. — b (2)M Other sense organs Csillik, B. — c (2)M Kalman, G. — c (2)M Reynolds, S. R. M. — e M Schneider, I. — c (2)M Skeleton General subjects Holtzer, H. — b V Preto Parvis, V. — b (2)L Schreiber, B. — b (11)L Felts, W. J. L. — c M Preto Parvis, V. — a ( 2 ) M Runner, M. N. — b M Embryonic and larval endoskeleton Milaire, J. — b (2)M Skull and visceral skeleton Skeleton of trunk and tail Skeleton of girdles and extremities Joints Muscular system General subjects Holtzer, H. — a V Hayashi, Y. — b (7) J Holtfreter, J. K. F. — d J Laufer, H. — a (8) J Muchmore, W. B. — a (7)J Wilde, C. E., Jr. — c (7) J Hayashi, Y. — b (7)L Herrmann, H. — a (7)L Rowinski, P. — a (2/7) L Csillik, B. — c (2)M Kalman, G. — c (2)M Schneider, I. — c (2)M Skeletal muscles Milaire, J. — b (2)M Visceral muscles Muscles of extremities Alimentary tract General subjects Kemp, N. E.-a (2/10) J Alten, P. J. van — a L Berg, G. G. — a (2)L 233 III. 7e. 7 III. 7e. 10 Berg, G. G. — a (2)M Mouth and pharynx Zenker, W. — a, b M Intestinal tract Watterson, R. L. — b ( 2/6 ) L Konopacka, B. — a (2)M Schunzel, G. — a (2)M Proctodacum Ruth, R. F. — b (4/8)L Salivary glands Liver Kamphuis, L. W. — a (7)V Armstrong, P. B. — a I Armstrong, P. B. — a J Monteiro, W. — a (2)J Schreiber, G. — b (2)J Croisille, Y. — a (11)L Dieterlen (Lievre), F. — b, c (6/1 1)L Fraser, R. C. — c (7)L Niizima, M. — c (11)L Watterson, R. L. — c (5/7)L Niizima, M. — c (11)M Pancreas Frye, B. E. — c d)I Frye, B. E. — b (2/6)L Respiratory organs General subjects Boell, E. J. — c J External gills Boell, E. J. — d (DJ Internal gills Respiratory tract and lungs Reynolds, S. R. M. — c Heart, vascular system and blood General subjects Grodzinski, Z. — c Block, M. H. — c Corner, G. W., Jr. — b Long, W. N. — a Ramsey, E. M. — c Heart Grodzinski, Z. — a Jaffee, O. C. — a Cruz (de Losada), M. V. de la — c (1/7)L DeHaan, R. L. — c L Douarin, G. H. le — a (4)L Ebert, J. D. — a (7/8)L 234 M I (7)M M M M I (2)1 Ebert, J. D. — b (2)L Klein, R. L. — a (2/7)L Preto Parvis, V. — b (2)1 Roberts (Montgomery^ I.C.- - a (1/2/3./ Hall, E. K. — a, b (5)M Hall, E. K. — c (3)M Roberts (Montgomery ),C- - a (1/2/3/1 Vascular system Lhotka, J. F. — a (2)M Reynolds, S. R. M. — a, c M Blood Chieffi, G. — c (7)1 Michalowski, J. — c I Chieffi, G. — c (7)J Michalowski, J. — c J Coleman, J. R. — a (7/8)L D'Amelio, V. — a (7)L Fraser, R. C. — d (7)L Mori, T. — a L O'Brien, B. R. A. — a, , b, c (7)L Schalekamp, M. A. D. H. — a (7/8)L Stalsberg, H. — b L Venzke, W. G. — b L Wilt, F. H. — b (7)L Heim, W. G. — b (7)M Miiller, G. — a M Coelomic cavities, endothelia !, lymphatic system and connective tissue Coelomic cavities Endothelia Lympathic system; R.E.S. Mun, A. M. — a L Clayton (Freedman), R. M. — e M Perry, M. M. — d M Roberts, K. B. — a M Connective tissue Edds, M. V., Jr. — a J Urogenital system and sexual differentiation General subjects Bulmer, D. — a (2)M Hayek, H. — a M Kidney Clark, H. — d (7)L Ekman, K. — a (7)L Staugaard, B. C. — a L III. 7e. 11 Clark. H. — d (7)M Staugaard. B. C. — a M Pronephros Jaffee, O.C. — b (2) J Mesoncphros Hayek, H. — a M Konopacka. B. — b (2)M Mctancphros Beam. J. R. — a M Harris, F. T. C. — b M Harris, F. T. C. — c (10)M Ncphric ducts, bladder Gonads Kotani, M. — b (2) J Mancino, G. — a J Yoshikura, M. — b (6) J Yoshikura, M. — c (4/6) J Meyer, D. B. — b (2)L Scheib (Pfleger), D. — a (2/1 1)L Bielanska ( Osuchowska ) , Z. — a ( 2 ) M Ovary Kemp, N. E. — a (2/10) J Testis Ovariotestis Genital ducts and external genital organs Scheib (Pfleger), D. — b (7)L Stegner, H.-E. — b (2)M Accessory glands Sexual differentiation Chieffi, G. — b (6)1 Follenius, E. — b (6)1 Hishida, T. — c I Okada, Y. K. — a, b I Chieffi, G. — b (6) J Wolff, Et. — b (6/1 1)L Endocrine organs General subjects Iwasawa, H. — a Hay, D. — a J Iwasawa, H. — a Deth, J. H. M. van — a L Groenendijk (Huijbers), M. M. — b L Hay, D. — b L Moog, F. — b L Deth, J. H. M. van — a M Hay, D. — b M Hinrichsen, K. — b M Moog, F. — b M Tartaglia, P. — a (5)M Vakaet, L. C. — b Hypophysis (see also under nervous system) Baker, B. I. — b Segal, S. J. — a Rapola, M. H. J. — a Thurmond, W. — a Dimond, M. T. — a Raynaud, A. — b Assenmacher, I. A. — a Petrovic, A. — a Thymus Ruth, R. F. — b Thyroid gland and parathyroids Brouwer, P. J. — a Dankmeijer, }. — b Hunt, E. L. — a Lynn, W. G. — a Gaillard, P. J. — a Li, Yu-Ying Fu — a Gonads Groenendijk (Huijbers), M. M. — a Watterson, R. L. — g Adrenals Rapola, M. H. J. — a Smitten, N. A. — a Perrenot, M. — a Smitten, N. A. — a Watterson, R. L. — b Benirschke, K. — a Kunski, H. — a Smitten, N. A. — a Pancreas Neurosecretion Aoto, T. — a Vivien, J. H. — b Aoto, T. — a Klein, C. — a Vivien, J. H. — b 8 Growth and differe a General subjects Gustafson, T. — b Vanderhaeghe (Hougardy), F. — a Clark, H. — b Geilenkirchen, W. L. M. Nijenhuis, E. D. — d Raven, Chr. P. — c Baltus, E. J. — a III. 8a M V (8)V J I (6)K K L (11)M (4/8)L (10)V (10)V (10)1 I L M (6)L (5/6)L J J L L (6)L M (2)M M ntiation (7/11) (11)V c E E E G 235 III. 8b Rulon, G. O. — a Dettlaf f , T. A. — b Dettlaff, T. A. — b Lopashov, G. V. — a Lopashov, G. V. — b, Nace, G. W. — b Shaver, J. R. — d Stroeva, O. G. — c Bell, E. — d, e Croisille, Y. — b Harris, M. — a Herrmann, H. — b Klein, N. W. — a Sengel, Ph. — c Tencer, R. — a Titova, I. I. — a Wolff, Em. — a Wolff, Et. — d Bryan, J. H. D. — c Harris, M. — a Stroeva, Miss O. G. — Wolff, Em. — a Wolff, Et. — d b Growth Rasmussen, L. — a Swann, M. M. — b Zeuthen, E. — c Fulton, C. M. — a Hale, L. J. — a David, J. R. — a Ito, T. — b Rockstein, M. — a Voy, A. — a Green, E. Ufford — a Rappaport, R., Jr. — a Tuft, P. H. — a Ebert, J. D. — d Langman, J. — a McCallion, D. J. — b Mun, A. M. — a Spratt, N. T., Jr. — a Veneziano, P. P. — a Heim, W. G. — a c Differentiation Moscona, A. A. — b Finger, I. — a Yow, F. W. — b Yow, F. W. — c Banerjee, S. — a Ganguly, B. — b 236 (5/7) G I J (5/11) J c (1 1 ) J (7/8)J (8)J J (H)L (11)L (1/6/7/1 1)L (7)L (7)L (5)L (7)L (8)L (11)L (11)L (7)M (l/6/7/ll)M -c M (11)M (11)M P P P B B Di Di Di Di (2/5)J J J (6/7/10)L (8)L (5)L L L (6)L (7)M (11 EV+V (8)P (4)P (5/7) P A A III. 8c Lahiri, D. — a A Mookerjee, S. — b A Sirlin, J. L. — a Di Sirlin, J. L. — f (2)Di Tahmisian, T. N. — a (4)Di Tandler, C. J. — a (2)Di Fukushi, T. F. — a G Finnegan, C.V. — b (2/8)V Kamphuis, L. W. — a (7)V Leghissa, S. — e (7)V Neyfakh, A. A. — a (7)1 Trinkaus, J. P. — a, b Boell, E. J. — a (7) J Clayton (Freedman), R. M. — a (8)J Edds, M. V., Jr. — a J Green, E. Ufford — c (7) J Hayashi, Y. — b (7) J Jones, R. O. — b (8/11) J Keck, K. — a (7) J Kimmel, D. L., Jr. — a (7) J Liedke, K. B. — b (10) J Markert, C. L. — a Masui, Y. — a J Okada, T. S. — b (7/11 )J Sirlin, J. L. — a Takata, K. — b (7/1 1 ) J Ursprung, H. — a (7)J Wilde, C. E., Jr. — b (7) J Wilde, C. E., Jr. — d (7/1 1 ) J Yamada, T. — c (7/11) J Boell, E. J. — a (7)L Butros, J. M. — a (7/1 1)L Clayton ( Freedman ) , R.M. — b (H)L Croisille, Y. — c (8)L Gayet, J. F. — d (3/7) L Hayashi, Y. — a, b (7)L Herrmann, H. — a (7)L Hilfer, S. R. — b (7/1 1)L Lavarack, J. O. — a (2)L Markert, C. L. — c (7)L Okada, T. S. — a (7/8)L Okada, T. S. — b (7/1 1)L Overton, J. H. — a L Schalekamp, M. A. D. H. — a (7/8)L Sirlin, J. L. — a L Sorokin, S. P. — a (2/9/1 1)L Takata, K. — b (7/1 1)L Trinkaus, J. P. — a, b L III. 8d III. 9 Wilde. C. E., Jr. — f L Fujii, T. — a G Yamada, T. - — c (7/11 )L Fujii, T. — b (5)G Clayton (Freedman), Marsland, D. A. — b G R. M. — c (7/8)M Marsland, D. A. — e (4/7)G Clayton (Freedman), R. M. — e M Rappaport, R., Jr. — c (3)G Goldberg, E. — b (7)M Kuru, M. — a, b, c (6)V Heckerman, R. O. — a (2)M Dettlaff, T. A. — b I Hinrichsen, K. — c (2)M Dettlaff, T. A. — b J Konopacka, B. — c (2)M Green, E. Ufford — b J Markert, C. L. — a M Rappaport, R., Jr. — c (3)J Markert, C. L. — c (7)M Bryan, J. H. D. — b (4)M Mulnard, J. G. — d (2/ll)M Czapska, D. — b M Nishimura, H. — c M Fujii, T. — a M Norman, C. — e (7)M Fujii, T. — b (5)M Perkowska, E. Moser — -a (7)M Nowak, A. — a (6)M Perry, M. M. — d Roberts, K. B. — a M M 9 Embryonic nutrition Sorokin, S. P. — a (2/9/1 1)M Grodzinski, Z. — b I Ursprung, H. — a (7)M Szubinska, B. S. — a I Wilde, C. E., Jr. — f M Vahs, W. — b (2/7) J d Mitosis Schalekamp, Hamburger, K. — a (1/7)P M. A. D. H. — a (7/8)L Plesner, P. — a (1/7)P Schlesinger, A. B. — a (3/7)L Rasmussen, L. — a P Schlesinger, A. B. — c (7)L Swann, M. M. — b P Spratt, N. T., Jr. — a L Zeuthen, E. — a (1)P Wolff, Em. — a (11)L Zeuthen, E. — b (1/7)P Wolff, Et. — d (11)L Zeuthen, E. — c P Leathern, J. H. — a M Rappaport, R., Jr. — c (3)D Menschik, Z. — a M Matuszewski, B. — a (2)Di Wolff, Em. — a (11)M Nijenhuis, E. D. — c E Wolff, Et. — d (11)M IV. DEVELOPMENT AND GENETICS KEY 1 Theoretical problems and general questions 2 General investigations General subjects Poly- and heteroploidy Hybridization Chimaerae and mosaics Merogony, including gyno- and androgenesis Nuclear transplantation studies Karyological studies Genetical basis of sex 3 Effects of genetical factors a Specific genes and mutants b Lethal factors c Phenocopies 4 Methods and techniques 237 IV. 1 1 Theoretical problems and general questions 2 General investigations a General subjects Fedoroff, S. — c Perry, M. M. — b (9) Waddington, C. H. — d (9) Katashima, R. K. — a P Kerr, N. S. — b P Sussman, M. — a P Sussman, R. R. — a P Benazzi, M. — a C Barigozzi, C. — a Di Bodenstein, D. — b Di Borstel, R. C. von — b, c Di Chovnick, A. — b, c Di Counce-Nicklas, S. J. — b Di David, J. R. — a Di Ede, D. A. — a Di Kroeger, H. — b Di Legay, J. M. — a Di Ludwig, D. — c Di Poulson, D. F. — b, c, e Di Rockstein, M. — c Di Wright, T. R. F. — b (7)Di Chief fi, G. — c (7)1 Kajishima, T. — a I Welander, A. D. — c I Brown, D. D. — a (7) J Chief fi, G. — c (7) J Dalton, H. C. — a La Spina, R. — b J Subtelny, S. — b J Volpe, E. P. — b Yamada, T. — a J Huber, W. — a L Landauer, W. — e L Beatty, R. A. — b, c M Braden, A. W. H. — a M Caspari, E. W. — a M Dagg, C. P. — b M Degenhardt, K.-H. — c M Gates, A. H. — a, b M Green, M. C. — a M Harrison, G. A. — a (4)M Harrison, G. A. — b, c M Horikawa, M. — a ( 1 1 ) M Horikawa, M. — b (7/ll)M Huber, W. — a M Krzanowska(Datkowna), H, — a M 238 Latimer, H. B. — a Mann, T. — a Moyer, F. H. — a Pierro, L. J. — c Rugh, R. — a Runner, M. N. — b, d Sawin, P. B. — a Skowron (Cendrzak), A. — Spisak (Plonka), I. — a Stevens, L. C. — b Waelsch, S. G. — b Zabinski, J. — a b Poly- and heteroploidy Benazzi, M. — a Urbani, E. — b Astaurov, B. L. — a, e Borstel, R. C. von — b Haggqvist, G. — b Beetschen, J. CI. — a, c, d Beetschen, J. CI. — e Fankhauser, G. — a Fankhauser, G. — c Hamilton, L. — a Kawamura, T. — b Romanovsky, A. — b Rostand, J. — a Rott, N. N. — a Sladecek, F. — b Stefanova, Z. — a Edwards, R. G. — b Piko, L. — a Urbani, E. — b c Hybridization Astaurov, B. L. — b, e Bodenstein, D. — b Lehman, H. E. — b Lehman, L. M. Y. — b Moore, A. R. — b, c Ubisch, L. v. — c, d Minganti, A. — a Oka, H. — b Watanabe, H. — a Balon, B. K. — b, d Beetschen, J. CI. — b Benazzi, M. — b Brachet, J. L. A. — a Brandom, W. F. — a, b Brandom, W. F. — c Fowler, J. A. — a Gregg, J. R. — a, b M (7)M M M M M M a (8)M (8)M M M (8)M C (7)C Di Di V (10) (7); (4). M M (7)M Di Di G G G G H H H I J J (1/7)1 J (2)J I (1)J IV. 2d Hamilton, L. — b Kawamura, T. — a, b, c Lehman, H. E. — b Lehman, L. M. Y. — b Malamed, S. — b (1) Mancino, G. — a McKinnell, R. G. — b Moore, B. C. — a, b (10) Moore, J. A. — b Romanovsky, A. — a (8) Romanovsky, A. — b Stefanova, Z. — a Volpe, E. P. — c Beatty, R. A. — b M Edwards, R. G. — b M d Chimaerae and mosaics Tartar, V. — b, c P Rothenbuhler, W. C. — b Di Nicholas, J. S. — h L Salzgeber, B. — c L Weniger, J. P. — a (11)L Wilde, C. E., Jr. — e L Wolff, Et. — f L Nicholas, J. S. — h M Salzgeber, B. — c M Tarkowski, A. K. — b M Weniger, J. P. — a (11)M WTilde, C. E., Jr. — e M Wolff, Et. — f M e Merogony, including gyno- and androgenesis Astaurov, B. L. — b Harvey, E. Browne — a Ubisch, L. v. — d Minganti, A. — c Hamilton, L. — b Kawamura, T. — c Moore, B. C. — a Rostand, J. — a Rott, N. N. — a Volpe, E. P. — e f Nuclear transplantation studies Briggs, R. W. — a DiBerardino, M. A. — a King, Th. J. — a, b, c McKinnell, R. G. — b Moore, J. A. — a Nikitina, L. A. — a Sladecek, F. — a IV. 3a Di (4)G G H J J (10)J J (4)1 ) Stefanova, Z. — b Stroeva, O. G. — d Subtelny, S. — a, c g Karyological studies AgrelL I. P. S. — b Chevremont, M. J. J. — b Nobili, R. — a Benazzi (Lentati), G. — a Magagnini, G. — a Puccinelli, I. — a Baffoni, G. M. — c Bier, K. — b Geyer (Duszynska), I. — a, Geyer (Duszynska), I. — b Kroeger, H. — a Michalowski, J. — c Brandom, W. F. — a DiBerardino, M. A. — b Fankhauser, G. — b Keck, K. — a King, Th. J. — d Markert, C. L. — a Michalowski, J. — c Harris, M. — a Benirschke, K. — b Geyer (Duszynska), I. — d Harris, M. — a Hollander, W. F. — c Jordan, M. A. — a Makino, S. — a, b, c Markert, C. L. — a Pietrzyk ( Walknowska), J. — Warkany, J. — b h Genetical basis of sex Stagni, A. — b Ranzoli, F. — c Baffoni, G. M. — c Charniaux (Cotton), H. — b Legrand, J. -J. — a Yanagimachi, R. — b Counce-Nicklas, S. J. — b Poulson, D. F. — d Rothenbuhler, W. C. — a, b Masetti Zannini, A. — a Castigli (Pitotti), M. — d Wroblewski, R. — c Volpe, E. P. — e Hinrichsen, K. — a P C c c D (10)D : D (4)D (1)D (11)L M M (11)M (4)M M M M M M B C D D D D Di Di Di E V V I M 3 Effects of genetical factors J a Specific genes and mutants 239 IV. 3b IV. 4 Bender, H. A. — a Di Borstel, R. C. von — a Di Castiglioni, M. C. — b Di Castiglioni, M. C. — c (7)Di Chovnick, A. — a Di Counce-Nicklas, S. J. — a Di Egelhaaf, A. — a Di Kaji, S. — a (5)Di Muth, F. W. — a (4)Di Panitz, R. — a (6)Di Scharloo, W. — a (4)Di Wehrmaker, A. — c Di Wolsky, A. — a Di Hishida, T. — b I Kajishima, T. — a I Matsuda, N. — a (4)1 Takeuchi, K. — b (7)1 Tomita, H. — a I Yamamoto, T. — c I McKinnell, R. G. — b ) Rostand, J. — b J Volpe, E. P. — f J Brumbaugh, J. A. — a L Hollander, W. F. — d L Landauer, W. — a L Cather, J. N. — b M Deol, M. S. — a M Ede, D. A. — d M Frye, B. E. — d M Geyer (Duszynska), I. — d M Gottschewski, G. H. M. — a (1 1 )M Griineberg, H. — a M Hicks, S. P. — d M Hinchlif fe, J. R. — a M Hummel, K. P. — a, b M Kocher, W. — b, c M McNutt, C. W. — a,b M Pierro, L. J. — b M Rickenbacher, J. — b, c M Stein, K. F. — a, c M Stein, K. F. — b (2)M Theiler, K. — b, c M Tondury, G. — b, c M Truslove, G. M. — a M b Lethal factors Imaizumi, T. — a Di Shiomi, T. — a Di Wright, T. R. F. — a (2)Di Wright, T.R.F.—b (7)Di Moore, B. C. — a (10)J Ede, D. A. — b L Kelly, W. A. — a L Landauer, W. — c L Bennett, D. — a (7/ll)M Hollander, W. F. — a, b M c Phenocopies Egelhaaf, A. — b Di Inouye, I. — a (5)Di Kaji, S.— b (5)Di Takaya, H. — d (5)Di Waddington, C. H. — b Di Goldie, M. — b, c L Landauer, W. — d L Runner, M. N. — c (7)M 4 Methods and techniques Beatty, R. A. — a M V. DEVELOPMENT AND PATHOLOGY KEY 1 Theoretical problems and general questions 2 General investigations a General subjects b Incompatibility reactions c Pathological effects of chemical treatment d Pathological effects of physical treatment e Pathological effects of nutritional and hormonal deficiencies and excesses f Pathological effects of diseases and parasites 3 Abnormal early development and teratomas 4 Abnormal later development a Teratology 240 V. 1 V. 2c b Abnormal development of organ systems (Cf. Key on p. 195) 5 Neoplasms 6 Methods and techniques 1 Theoretical problems and general questions 2 General investigations a General subjects Fedorof f , S. — b Fedoroff, S. — c, d Tartar, V. — d Slaby, O. — f Nace, G. W. — b Subtelny, S. — b Knight, P. F. — b Bishop, D. W. — c Dagg, C. P. — a Degenhardt, K.-H. — d Horikawa, M. — b Knight, P. F. — b Makino, S. — c Nishimura, H. — a Testa v. Bappenheim, I. Waelsch, S. G. — c Walker, B. E. — c Warkany, J. — b b Incompatibility reactions Anton, H. J. — b Rossi, A. — a Bermann, F. — a Ebert, J. D. — e Kulangara, A. C. — b Mitchison, N. A. — a Nicholas, J. S. — h Ruth, R. F. — a Bermann, F. — a Hunt, E. L. — b Huygnard, C. — a (ID P V (8)J J (7/8)L (8)M M M M (7/8) M M M M M M M J J L L L L L (8)L M M M b,c Konieczna (Marczyriska), B. — a M Nicholas, J. S. — h M Skowron (Cendrzak), A. — a M Spisak (Plonka), I. — a M Zabinski, J. — a M c Pathological effects of chemical treatment Perry, M. M. — a (7)EV + V Waddington, C. H. — c (7)EV + V Fautrez (Firlefyn), N. J. — b D Roulston, W. J. — a (1/7)D Bednjakova, T. A. — c (7)Di Grosch, D. S. — a Di Mori, H. — a Di Ramenskaja, G. P. — a (7)Di Morrill, J. B. — a E Cheney, R. H. — a G Gustafson, T. — c G Horstadius, S. — b G Kuhn, O. — c V Battle, H. I. — a, b, c Frangois, Y. — b Hisaoka, K. K. — a, c, d Borden, J. v. d. — a Brachet, J. L. A. — d Brahma, S. K. — c Brauckman, E. S. — c Cheney, R. H. — f Green, E. Ufford — a {2\ Kamel, A. — a Neogy, R. K. — a Raunich, L. — d Trampusch, H. A. L. — f Wolsky, A. — c Mulherkar, L. — b K Baginski, S. — b, c L Billett, F. S. — b L Brachet, J. L. A. — d L Brahma, S. K. — c L Kamel, A. — a L Kropp, B. N. — a L Landauer, W. — b L Neogy, R. K. — a L Nicolet, G. — a L Pierro, L. J. — a L Shoger, R. L. — b L Shoger. R. L. — c (2)L Borden, J. v. d. — a M Cheney, R. H. — b M Corliss, C. E. — b M Fraser, F. C. — a M Gitlin, G. — a M Haggqvist, G. — a M Mercier ( Parot ) , L. — a, c M Sinclair, J. G. — c M Trampusch, H. A. L. — f M Tuchmann-Duplessis, H. — b, d M 241 V. 2d V. 2f d Pathological effects of physical treatment Astaurov, B. L. — c (7) Mookerjee, A. — a P Mookerjee, S. — e P Yow, F. W. — b P Benazzi, M. — c C Querner, H. — b C Amy, R. L. — a Di Astaurov, B. L. — c (7)Di Astaurov, B. L. — d Di Bednjakova, T. A. — a Di Geyer (Duszynska), I. — b Di Grosch, D. S. — a Di Kloft, W. — a Di Li, Yu-Ying Fu — b Di Shiomi, T. — b Di Tahmisian, T. N. — a, b, c Di Ulrich, H. — a Di Yajima, H. — b Di Cheney, R. H. — e G Alescio, T. — b (11)V Kirrmann, J.-M. — a (5)V Welander, A, D. — a I Borden, J. v. d. — a J Butler, E. G. — b J Kemp, N. E. — e (9)J Liotti, F. S. — b (5)J Lynn, W. G. — c (5)1 Peters, Th. — a J Reyss-Brion (Ducreau), M. -a J Sambuichi, H. — a J Trampusch, H. A. L. — f J Wehrmaker, A. — a I Baginski, S. — c L Barbieri, F. D. — a (2)L Bose, A. — a, b L Kocher, W. — d L Lutz, H. — e L Nebel, L. A. — a L Reyss-Brion (Ducreau), M. — a L Rickenbacher, J. — d L Theiler, K. — d L Tondury, G. — d L Walker, B. E. — h (10)L Bijelic, N. — a M Borden, J. v. d. — a M Bryan, J. H. D. — b M Chase, H. B. — c M Domac, B. — a M Frank, Z. — a M Glass, L. E. — b M Harvey, E. B. — a M Hicks, S. P. — a, b M Kameyama, Y. — a, b M Kocher, W. — d M Majima, A. — a M Mandl, A. M. — b M Martinet, M. — c M Murakami, U. — a M Nicholas, J. S. — 1 M Pantelouris, E. M. — a M Rugh, R. — a, b, d M Skreb, N. — c, d M Theiler, K. — d M Tondury, G. — d M Trampusch, H. A. L. — f M e Pathological effects of nutritional and hormonal deficiencies and excesses Yajima, H. — a Di Grabowski, C. T. — d L Grabowski, C. T. — e (7)L Watterson, R. L. — b L Asling, C. W. — a, b M Cheng Wei, D. — a M Giroud, A. — a, b M Martinet, M. — a, b M Menschik, Z. — b M Mercier (Parot), L. — b M Roux, Ch. — a M Walker, B. E. — f, j, k M f Pathological effects of diseases and parasites Geigy, R. — c D Bednjakova, T. A. — b Di Veresjkaja, V. N. — b Di Goube de Laforest, P. — a (11)V Kocher, W. — a (11)V Rickenbacher, J. — a (11)V Theiler, K. — a (11)V Tondury, G. — a (11)V Corliss, C. E. — c L Cruz (de Losada), M. V. de la — a L Ebert, J. D. — f L Ede, D. A. — c L Kelly, W. A. — b L Robertson, G. G. — a L Bartelmez, G. W. — d M Nie, C. j. van — b M Volkova, L. S. — a (8)M 242 V. 3 3 Abnormal early development and teratomas Hisaoka, K. K. — b Takaya, H. — c Watanabe, T. — a Salaun, J. — a Nishimura, H. — b Piko, L. — a Salaun, J. — a Wrba, H. — d I (4)J (4)J L M M M (11)M (1 4 Abnormal later development a Teratology Krause, G. — a Ashley, G. T. — a Meyling, H. A. — b Slaby, O. — f Holtfreter, J. K. F. — c Mangold, O. — d Rostand, J. — b Baginska (Borsuk), I. — a Baginski, S. — a Bilewicz, S. — b Grabowski, C. T. — d Jelinek, R. — a Kieny, M. A. — a Kocher, W. — d Orts Llorca, F. — a Pierro, L. J. — a Rickenbacher, J. — d Slaby, O. — e Theiler, K. — d Tondury, G. — d Wolff, Et. — a, g Asling, C. W. — a Baginska (Borsuk), I. — a Chase, H. B. — a Dankmeijer, J. — d Dekker, A. — a Fraser, F. C. — a Fraser, F. C. — b Giroud, A. — c Hummel, K. P. — a, b Ingen, H. C. v. — a Jordan, M. A. — a Kameyama, Y. — c Kocher, W. — d Majima, A. — b Mikami, Y. — a Murakami, U. — c Di V V V (4)J J J L L L L L L (4)L L (5)L (4)L L (4)L (4)L L M M M M M (5)M M M M M M M (4)M M M M V. 4b. 4 M M ■a M (4)M M M M M M (4)M (4)M M M (6)M Nishimura, H. — a Patten, B. M. — a Pietrzyk (Walknowska), J. Rickenbacher, J. — d Runner, M. N. — d Settle, G. W. — a Simonsberger, P. — a Slaby, O. — e Snellen, H. A. — a Theiler, K. — d Tondury, G. — d Tuchmann-Duplessis, H. — Vaupel, M. R. — a Walker, B. E. — b, f b Abnormal development of organ systems Integument Butler, E. G. — d J Butler, E. G. — d M Chase, H. B. — c (4)M Nervous system Poulson, D. F. — c Jelinek, R. — a, b Kallen, A. J. B. — b Lemez, L. — b Veneziano, P. P. — c Watterson, R. L. — a Auroux, M. — a Delmas, A. — b Giroud, A. — d Hicks, S. P. — b, d Menschik, Z. — b Sensenig, E. C. — c Sinclair, J. G. — b Vaupel, M. R.— b Witkam, W. G. M. — a Special sense organs Castiglioni, M. C. — b Popov, V. V. — b Orts Llorca, F. — a, b Asling, C. W. — b Chase, H. B. — a Delmas, A. — b Majima, A. — a Rugh, R. — c Stroeva, O. G. — a, b Skeleton Kieny, M. A. — a Wolff, Et. — g Di L L L (5)L (6)L M M M M M M M M (4)M Di V L M M M (4)M (4)M M L L 243 V. 4b. 5 V. 6 Doskocil, M. — a Sensenig, E. C. — Muscular system Cather, J. N. — b Alimentary tract Watterson, R. L. - Watterson, R. L. - Kleiss, E. — a Solere — a M M M (5/7)L (5)L M M Respiratory organs Heart, vascular system and blood a,d V V J Dankmeijer, J. ■ Los, J. A. — a Masui, Y. — b Cruz (de Losada), M. V. de la — a Douarin, G. H. le — a Rychter, Z. — b, c Stephan, Fr. — b Adams Smith, W. N. — a Block, M. H. — b Krediet, P. — a Meyling, H. A. — a Nie, C. J. van — a, b Patten, B. M. — b Salser, G. M. — a Shaner, R. F. — a Sinclair, J. G. — b Volkova, L. S. — a Warkany, J. — a Coelomic cavities, endothelia, lym- phatic system and connective tissue Urogenital system and sexual differentiation Michalowski, J. — a Roux, Ch. — b M Rugh, R. — b (4)M Stevens, L. C. — a M Endocrine organs L (4)L L L M (4)M M M M M M M M (8)M M Watterson, R. L. — f, g (5/6)L Hummel, K. P. — c M Tartaglia, P. — a (5)M 5 Neoplasms Barigozzi, C. — a Di Castiglioni, M. C. — a Di Pourreau (Schneider), N. M.-aV Wolff, Em. — b (11)V Wolff, Et — e (11)V Hisaoka, K. K. — b I Curtis, A. S. G. — a (11)J Iyeiri, S. — b Kawakami, I. — c Ruben, L. N. — a Shaver, J. R. — b Spirito, A. — a Yamana, K. — a (7)1 Curtis, A. S. G. — a (11)L Ede, D. A. — c L Kelly, W. A. — b L Fraser, R. C. — b L Kallen, A. J. B. — b L Koecke, H.-U. — a L Menkes, B. — b L Saunders, J. W. — e (8)L Bolognari, A. — c M Curtis, A. S. G. — a (11)M Heim, W. G. — a (7)M Iyeiri, S. — b M Kawakami, I. — c M Koecke, H.-U. — a M Konieczna (Marczyriska) B. — a M Makino, S. — a, b M Saunders, J. W. — e (8)M Sigot (Luizard), M. F. — -a (11)M Stevens, L. C. — a M Wrba, H. — c M Yamana, K. — a (7)M 6 Methods and techniques VI. REGENERATION KEY 1 Theoretical problems and general questions 2 General investigations a General subjects b Wound healing 3 Reconstitution after disorganization 244 VI. 1 VI. 5 4 Regeneration after loss of a portion of the body 5 Regeneration after loss of parts of the organism a Extremities b Tail c Other parts 6 Regeneration of organ systems (including physiological regeneration) (Cf. Key on p. 195) 7 Growth and differentiation 8 Methods and techniques 1 Theoretical probems and general questions 2 General investigations a General subjects Chevremont, M. J. J. — c Kucias, J. — b Schneider, D. — c Castigli (Pitotti), M. — d Kuhn, O. — d Hartung, E. W. — a (ID EV V V J Kiortsis, V. — b (7)1 Luther, W. — b (4)J Polezhaev, L. V. — b (8)J Ruben, L. N. — a J Rzehak, K. F. — b J Schmidt, A. J. — a (6)J Schmidt, A. J. — b (2/7)) Stefanelli, A. — e (2)J Stefanelli, A. — e (2)L Heckerman, R. O. — a (2)M Luther, W. — b (4)M Richter, K. M. — a (11)M Swartz, G. E. — a M b Wound healing Kuhn, O. — d V Brandom, W. F. — a J Luther, W. — a J Abercrombie, M. — b M Block, M. H. — d M James, D. W. — a M 3 Reconstitution after disorganization 4 Regeneration after loss of a portion of the body Tartar, V. — a P Abeloos, M. — a B Heath, H. D. — b B Miller (Stone), F. — b B Miller, J. A., Jr. — a (1)B Mookerjee, S. — a B Morrill, J. B. — c B Pasquini, P. — b B Penzlin, H. — a B Petrucci, D. — b B Sanyal, S. — a, b B Sinha, A. K. — a, b B Spratt, N. T., Jr. — c B Wolpert, L. — a B Abeloos, M. — a C Bondi, C. — a C Greca, M. la — a C Herlant (Meewis), H. — a C Hubl, H. — a (6)C Hubl.H. — b C Ichikawa, A. — b C Kanatani, H. — a, b C Kawakami, K. I. — a C Lender, Th. — a (7)C Lender, Th. — b (6)C Michon, J. — a (6)C Pasquini, P. — b C Petrucci, D. — b C Ranzoli, F. — b C Rulon, G. O. — b (5/7) C Sengel, C. — a (11)C Spratt, N. T., Jr. — c C Stagni, A. — a C Stephan (Dubois), F. — a C Sugino, H. — b C Vannini, E. — b C Wolff, Et. — c C Abeloos, M. — a D Tweedell, K. S. — b F Lender, Th. — c G 5 Regeneration after loss of parts of the organism Patane, L. — a D O'Farrell, A. F. (6)Di 245 VI. 5a Morgan, J. — a (6)Di Penzlin, H. — b Di Stock, A. — a (6)Di Voy, A. — a Di Hay, E. D. — c (10)V Niazi, LA. — a I Anton, H. J. — a (10) J Bieber, S. — a (2/7/10) J Brunst, V. V. — b J Dent, J. N. — a J Harrebomee, A. E. — b Jordan, M. A. — b Karasaki, S. — a (2) J Karasaki, S. — b (9) J Liversage, R. A. — a (6) J Newth, D. R. — a J Niazi, LA. — a J Niwelinski, J. M. — a, b (2/7)} Prescott, D. — a (2) J Roguski, H. F. — a Rzehak, K. F. — b J Saito, T. — a (2) J Schmidt, A. J. — a (6) J Schmidt, A. J. — b (2/7) J Skowron, S. — a J Skowron (Cendrzak), A. — b (8)} Trampusch, H. A. L. — a, b, d Trampusch, H. A. L. — e (4/7)} Verwoerd, C. D. A. — a (4/7) J Walash, M. N. — a J Woerdeman, M. W. — b (2) J Wolff, Et. — c J Wolsky, A. — c (5) J Yamada, T. — b (2) J Zamorska, L. — a, b (2/7) J Woerdeman, M. W. — b ( 2 ) L a Extremities Laufer, H. — b (7)Di Goss, R. J. — a I Butler, E. G. — a, c J Butler, E.G. — b (4) J Deck, J. D. — a J Deck, J. D. — b (9)J Dimitrova, A. — a Faber, J. — a J Fimian, W. J., Jr. — a (4/11) J Goss, R. J. — c Hilfer, S. R. — a (6) J Kiortsis, V. — a J Kiortsis, V. — c (11)J Laufer, H. — a (8) J VI. 6. 3 Laufer, H. — c J Lazard (Hauben), L. — a Luther, W. — a Manner, H. W. — a (5) J Muth, F. W. — b J O'Steen, W. K. — c (10) J Polezhaev, L. V. — f (4) J Ruben, L. N. — b J Stinson, B. D. — a (4) J Thornton, C. S. — a (10) J Thornton, C. S. — b Yntema, C. L. — b J b Tail Achtelik, W. — d (2) J Belka-Grzybek, A. — c ( 2 ) J Faber, J. — b, c J Holtfreter, J. K. F. — a Kucias, J. — a (2) J Wroblewski, R. — b (2) J Filogamo, G. — b K c Other parts Naylor, E. — a C Muth, F. W. — a Di Pohley, H.-J. — a Di Goss, R. J. — a Goss, R. J. — b J 6 Regeneration of organ systems Integument Goodrich, H. B. — a Goss, R. J. — d Goss, R. J. — e Polezhaev, L. V. — e Nervous system Sugino, H. — b Bodenstein, D. — a Stefanelli, A. — b Maron, K. — a Bertolini, B. — b Gaze, R. M. — a Srebro, Z. A. — a Bertolini, B. — b Courtey, B. — b Erhart, E. A. — a Polezhaev, L. V. — c Zelena, J. — b Special sense organs Kishida, Y. — b Hasegawa, M. — a 246 VI. 6. 4 Sato, T. — b Campbell, J. C. — a (8) Eguchi, G. — a (9) Freeman, G. — a Gaze, R. M. — a Hasegawa, M. — c Kato, M. — a Mikami, Y. — c Overton, J. H. — b Reyer, R. W. — a Sato, T. — a (7/9) Stone, L. S. — a, b Stone.L.S. — c (11) Takano, K. T. — a Takano, K. T. — b (9) Tweedell, K. S. — a Doorenmalen, W. J. van — b (7)L Woerdeman, M. W. — a L Rugh, R. — c M Woerdeman, M. W. — a M Skeleton Gitlin, G. — b M Polezhaev, L. V. — a M Muscular system Dimitrova, A. — b M Alimentary tract Kido, T. — a C Wilson, J. W. — a V O'Steen, W. K. — a, b J O'Steen, W. K. — c (10) J Hasegawa, M. — b L Fortak, W. — a M VI. 8 Kuru, M. — a (6)M Stern, K. — a M Respiratory organs Heart, vascular system and blood Masui, Y. — b I Haigh, G. — a M Harris, P. F. — a M Polezhaev, L. V. — d M Coelomic cavities, endothelia, lym- phatic system and connective tissue Urogenital system Endocrine organs Belka-Grzybek, A. — a M Gruca, St. — b M Pluta, E. — a,b M Wroblewski, R. — a M 7 Growth and differentiation Morrill, J. B. — c B Pasquini, P. — b B Petrucci, D. — b B Pasquini, P. — b C Petrucci, D. — b C Wilson, J. W. — a V Faber, J. — b J Nowak, A. — b J Knight, P. F. — a (7)L Knight, P. F. — a (7)M Stern, K. — a M 8 Methods and techniques Bell, E. — f VII. METAMORPHOSIS KEY 1 Theoretical problems and general questions 2 Metamorphosis of the entire organism a General subjects b Descriptive studies c Experimental morphological studies d Physiological studies e Endocrinological studies 3 Metamorphosis of parts of the organism 4 Metamorphosis of organ systems (Cf. Key on p. 195) 5 Methods and techniques 247 VII. 1 VII. 5 1 Theoretical problems and general questions 2 Metamorphosis of the entire organism a General subjects Hauenschild, C. — a C Baxter, E. W. — a I Muth, F. W. — b J Spiegel M. — b (7) J b Descriptive studies Schmidt, G. H. — a Di Thompson, T. E. — a, b E Harvey, E. Browne — c G Ubisch, L. v. — a G Oka, H. — a H Brown, D. D. — a (7) J Jongh, H. J. de — a J Kemp, N. E. — d (9) J Stephenson, N. G. — b J c Experimental morphological studies Alleaume (Bordes), N. — a Di Gloor, H. J. — a Di Pohley, H.-J. — a,b Di Steinberg, D. M. — b Di Bagnara, J. T. — a Hsu (Liang), C. Y. — a (5] Muth, F. W. — b Niizima, M. — a (IT O'Steen, W. K. — b Stephenson, N. G. — b d Physiological studies Knight-Jones, E. W. — a Bookhout, C. G. — c Moyse, J. — a Daillie, J. — a Ito, T. — a Neulat, M. M. — a Rockstein, M. — a Rockstein, M. — b Russo-Caia, S. — b Bosinelli, L. — a Castigli (Pitotti), M. — b Fankhauser, G. — d Hsu (Liang), C. Y. — a Hsu (Liang), C Y. — b Jongh, H. J. de — a Kaltenbach, J. C — c 243 C D D Di (l)Di (7)Di Di (7Di (7)Di {1/7)1 1 (7)1 (5)1 (5/6) J J (2)1 Leghissa, S. — c (1/7)1 Leghissa, S. — h 1 Stuchly, Z. — a J Wilt, F. H. — a (6)1 e Endocrinological studies Geigy, R, — a Di Highnam, K. C. — a Di Ichikawa, M. — a, b Di Nishiitsutsuji-Uwo, J. — a Di Ozeki, K. O. — a Di Steinberg, D. M. — b Di Hartwig, H. — a V Bagnara, J. T. — a J Hsu (Liang), C. Y. — b (5)J Kaltenbach, J. C. — b J Kaltenbach, J. C. — c (2)1 Lynn, W. G. — a J 3 Metamorphosis of part s of the organism Schoeller, J. — a Di 4 Metamorphosis of organ systems Integument Kemp, N. E. — d (9)1 Nervous system Special sense organs Wilt, F. H. — a (6)1 Skeleton Kemp, N. E. — d (9)1 Muscular system Niiesch, H. — b Di Alimentary tract Monteiro, W. — a (2)1 Respiratory organs Heart, vascular system and blood Coelomic cavities, endothelia, lym- phatic system and connective tissue Urogenital system Cambar, R. — c 1 Dechambe, C. — b 1 Foote, Ch. L. — b (1 1 ) J Foote, F. Martindale — b (1 1 ) J Lynn, W. G. — b J Endocrine organs Bosinelli, D. — b J 5 Methods and techniques VIII IX VIII. SOMATIC EMBRYOGENESIS KEY 1 Theoretical problems and general questions 2 Methods and techniques 3 Somatic embryogenesis 1 Theoretical problems and general questions 2 Methods and techniques 3 Somatic embryogenesis Rasmond, R. — a Mookerjee, S. — a Sanyal, S. — a, b B Sinha, A. K. — b B Kanatani, H. — c C Ranzoli, F. — b C Vannini, E. — b C A Brewin, B. I. — b, c H B Sabbadin, A. — b H IX. EXPERIMENTAL DEVELOPMENTAL MORPHOLOGY OF PLANTS Bonner, J. T. — a Cheney, R. H. — c Czapska, D. — a De Haan, R. L. — b Filosa, M. F. — a Gulline, H. F. — a Haccius, B. — a, b Hammerling, J. — a Harte, C. — a, b, c Jacobs, W. P. — a, b Jaffe, L. F. — a,b Keck, K. — b Liotti, F. S. — a McLaren, A. — b Mitchison, J. M. — a Pray, T. R. — a, b, c Preda, V. — e Sachs, R. M. — a, b, c Takeuchi, I. — a 249 NEW TECHNICAL METHODS in Developmental Biology (arranged according to subjects) This chapter contains data on methods published during the two-year period elapsed between the appearance of the previous and of the present full issue. CLASSIFICATION OF SUBJECTS I/II Descriptive and experimental embryology III Physiology of development IV Development and genetics V Development and pathology VI Regeneration a microscopy, photography and reconstruction b histology and cytology c operation and marking d culturing (of organisms, organs, tissues and cells) e physiology f histochemistry and cytochemistry g biochemistry h biophysics i mathematics Descriptive and Experimental Embryology Microscopy, photography and reconstruction 1. Egg shell membranes for external guides in reconstruction. (General) C. H. Barnett & G. Maxwell — Stain Technol. 35, 50-51, 1960 2. Three-dimensional coordinate system for drawing reconstructions from sectioned embryos. (General) J. A. Fowler — Stain Technol. 36 (in press) 3. Fish scale preparation. (Pisces) E. K. Balon — Biologia 15, 373-376, 1960 4. Gross vizualization of early implantation sites. (Mammalia) M. C. Ward Orsini & H. W. Mossman — Anat. Rec. 139, 331-332, 1961 5. Observations on the embryology and physiology of reproduction by study of cleared uterine tracts. (Mammalia) M. C. Ward Orsini — J. Repr. Fert. (in press) 250 Histology and cytology 6. Sull impiego del cloruro di platino come sostanza di impregnazione. (General) A. Bolognari, M. Albanese & A. Donato — Boll. Soc. Ital. Biol. sper. 35, 764- 766, 1959 Operation and marking 7. Induction of vascular tissues in inverted grafts of small portions of plant H. F. Gulline — Austr. J. Bot. 8, 1-10, 1960 tissues. Linum usitatissimum 8. Culture and microsurgery. (Ciliata) V. Tartar — "The Biology of Stentor", Pergamon Press, 413 pp., 1961 9. Kontrollierte Verlagerung von Hinterpolmaterial im Ei. (Insecta) K. Sander — Roux* Arch. 151, 660-707, 1960 10. Local vital staining of eggs with Nile Blue sulphate, using the glass capil- lary tube. ( Echinodermata) T. F. Fukushi — Bull. Mar. Biol. Stat. Asamushi 9, 127-132, 1959 1 1 . Grafting of embryonic cell cortex. (Amphibia) A. S. G. Curtis — J. Embryol. Exp. Morphol. 8, 163-173, 1960 12. A technique for removing thyroid glands from larvae. (Anura) J. N. Dent — Endocrinol. 64, 314-316, 1959 13. Castration of tadpoles. Rana catesbeiana (Anura) F. M. Foote & W. B. Mathews, Jr. — Anat. Rec. 134, 564-565, 1959 14. Thyroidectomy. (Anura) H. Iwasawa — Med. & Biol. (Tokyo) 51, 240-241, 1959 15. Application de la chambre a huile de de Fonbrune a la culture et a la section des fibres nerveuses. (Aves) B. Courtey & J.-P. Denefle — C. R. Ass. Anat. 106, 201-209, 1960 16. Association de blastodermes. (Aves) H. Lutz — Reun. Europ. Anat., Strasbourg, 1960 17. Study of primitive migrating cells in the developing nervous system by their radiosensitivity and tritiated thymidine uptake. (Mammalia) S. P. Hicks, C. J. D'Amato & D. L. Joftes — Ann. Symp. Brookhaven Nat. Lab., New York, 1961 (in press) 18. Fusion and culture of eggs. (Mammalia) A. K. Tarkowski — Nature 190, 857-860, 1961 See also entry no. 3 251 Culturing (of organisms, organs, tissues and cells) 19. Rotation-mediated histogenetic aggregation of dissociated cells. (General) A. A. Moscona — Exp. Cell Res. 22, 455-475, 1961 20. La culture in vitro de l'oeuf. Artemia salina (Phyllopoda) N. Fautrez-Firlefijn & F. Van Dijck — Arch. Zool. Exp. Gen. (in press) 21. Culture medium in which any part of the embryo can be decomposed into its cellular components capable of further proliferation and movement. (Pisces, Amphibia) K. I. Sirakami — Mem. Fac. Lib. Arts Educ. Yamanashi Univ. 11. 125-127, 1959 22. Culture of cells in diffusion chambers on the chorio-allantoic membrane. E. Bell — Nature 186, 403-404, 1960 (Aves; Mammalia) 23. Culture in vitro des oeufs d'une espece ovovivipare. Anguis fragilis A. Raynaud — C. R. Acad. Sci. Paris 251, 2416, 1960 (Lacertilia) 24. Organ culture as a new method for studying the implantation of blasto- cysts. (Mammalia) T. W. Glenister — Proc. Roy. Soc. Ser. B., 1961 (in press) See also entries no. 8, 15, 18 Biophysics | 25. Radiation inactivation of nuclei. (General) A. A. Neyfakh — J. Embryol. Exp. Morphol. 7, 173-192, 1959 See also entry no. 17 Mathematics 26. The relative dimensionless characteristics of developmental duration. T. A. Dettlaff & A. A. Dettlaff — Arch. Biol. 72, 1-16, 1961 (General) Physiology of Development Microscopy, photography and reconstruction 27. Combined oil-immersion, phase-contrast, and dark-ground viewing of "thorotrast" in tissue sections. (General) E. W. Baxter - Nature 187, 162, 1960 28. Venous and arterial contrast radiography in stillborn fetuses; implications in neonatal resuscitation. (Mammalia) J. A. Miller & B. Westin — Surgery 46, 1140-1151, 1959 See also entry no. 5 252 Histology and cytology See entry no. 27 Operation and marking 29. Embryological microhaemodynamics. (Vertebrata) Z. Rychter & L. Lemez — Cs. morfol. 9, 55-68, 1961 Culturing (of organisms, organs, tissues and cells) 30. Etude quantitative du developpement en milieu axenique. (Insecta) J. R. David — Bull. Biol. Fr. Belg. 93, 472-505, 1959 31. Nutrition, and development of artificial diets. Bombyx mori (Lepidoptera) T. Ito — Bull. Sericult. Exper. Stat. 16, 311-348, 1961 32. Versuche zur Determination von embryonalem Ektoderm. (Amphibia) U. Becker, H. Tiedemann & H. Tiedemann — Z. Naturforsch. 14b, 608, 1959 33. Prolonged survival of spermatozoa in a chemically defined medium at room temperatures. Homo sapiens (Primates) Ch. Norman & E. Goldberg — Nature 188, 760, 1960 See also entry no. 24 Physiology 34. Methods of obtaining stage ontogenins. (Amphibia) G. K. Roussev — Experientia 16, 329, 1960 35. Gradient calorimetry in the embryo. (Aves) C. Romijn & W. Lokhorst — J. Physiol. 150, 239-249, 1960 36. Quantitative use of tetrazolium salts for metabolic rate determinations in embryos. (Aves) A. B. Schlesinger — Anat. Rec. 137, 392, 1960 37. The use of autoradiography for isotopes with a short half life, and of K42 emission counting in studying the maturation of kidney function. (Mammalia) J. R. Beam & F. T. C. Harris — Nature 184, 1959-1960, 1959 See also entry no. 28 Histochemistry and cytochemistry 38. Histochemical demonstration of enzymes that split inorganic polymers of phosphoric acid. (General) G. G. Berg — J. Histo. Cytochem. 7, 294, 1959 and 8, 92-101, 1960 253 39. Une technique modifiee pour la detection des phosphomonoesterases acide et alcaline et de l'adenosine-triphosphatase dans les tissus embryonnaires. (General) C. Marit & J. Milaire — Histochemie (in press) 40. Nucleolar orthophosphate, silver-reducing component of nucleoli. C. J. Tandler — Biochim. Biophys. Acta 44, 536-542, 1960 (General) 41. Higher resolution stripping emulsion for autoradiography, using isotopes other than tritium (Experimental plate V 1042, Kodak Ltd., London). J. L. Sirlin — Exp. Cell Res. 18, 598-600, 1959 (General) 42. The autogram method of detecting cathepsins (Benz) and its application to small objects. (General) R. Wroblewski — Folia Biol. (Krakow), 1961 (in press) 42a. Identification of haemoglobin by its catalase reaction with peroxide and O-dianizidine. (Vertebrata) B. R. A. O'Brien — Stain Technol. 36, 57-61, 1961 43. Microautographic investigation of catheptic activity during development, metamorphosis and regeneration. (Amphibia) R. Wroblewski & A. Grzybek (Belka) — Folia Biol. (Krakow), 1961 (in press) 44. Application of the periodic acid-Schiff technique to whole embryos. D. B. Meyer — Stain Technol. 35, 83-89, 1960 (Aves) 45. Differential fluorescence in living eggs treated with acridine orange. (Mammalia) C. R. Austin & M. W. H. Bishop - Exp. Cell Res. 17, 35-43, 1959 See also entry no. 37 Biochemistry 46. Extraction, hydrolysis and electrophoretic analysis of RNA from micro- scopic tissue units (microphoresis). (General) J. E. Edstrom — J. Biophys. Biochem. Cytol. 8, 39-46, 1960 47. A sensitive method for quantitative estimation of serotonin (5-hydroxy- tryptamine) in embryonic tissues. (General) B. N. Manukhin & G. A. Buznikov — Sechenov Physiol. J. (U.S.S.R.) 46, 1160-1163 48. Immunologic assay for pituitary gonadotrophic hormones. (General) S. J. Segal, S. Hakim & L. Niu — Proc. 1st Int. Congr. Endocrinol, 1960, 1093 49. Separation des proteines embryonnaires par electrophorese sur acetate de cellulose. (Amphibia) H. Denis — Nature 187, 62, 1960 See also entries no. 36, 40 254 Biophysics 50. Controlled partial illumination or irradiation of large numbers of cells. (General) L. Jaffe, H. Etzold & S. McKinley — J. Biophys. Biochem. Cytol. (in press) 51. A method for subjecting dividing eggs to constant tensile stress. R. Rappaport — J. Exp. Zool. 144, 225-231, 1960 (Echinodermata) See also entry no. 25 Mathematics See entry no. 26 Development and Genetics Operation and marking 52. Measurement of developmental rate by transplantation. (Insecta) F. W. Muth — Roux' Arch, (in press) Biophysics See entry no. 25 Mathematics See entry no. 26 Development and Pathology Microscopy, photography and reconstruction See entry no. 28 Operation and marking 53. A method for obtaining experimental cranioschisis, exencephalia or ce- phalocoele, as well as "overgrowth" of the neural tube. (Aves) R. Jelinek — Cs. Morfol. 7, 368-378, 1960 See also entry no. 29 Culturing (of organisms, organs, tissues and cells) 54. Effet du tabac sur les fibroblastes pulmonaires par diffusion et par con- tact a travers de l'huile de paraffine. (Aves) B. Courtey & J.-P. Denefle — C.R. Ass. Anat. 106, 201-209, 1960 255 Histochemistry and cytochemistry 55. On the physiological role of polyphenols in cell and tissue envelopes. L. Monne — Arkiv. Zool. (Stockholm), Ser. 2, 13. (General) Biophysics See entry no. 17 Regeneration Operation and marking 56. Assay of liver regeneration utilizing intraperitoneal injection of colloidal radiogold. (Mammalia) K. Stern — Ann. N.Y. Acad. Sci. 88, 252-263, 1960 See a/so entry no. 52 Culturing (of organisms, organs, tissues and cells) 57. The in vitro cultivation of blastema tissue. (Amphibia) W. J. Fimian, Jr. — J. Exp. Zool. 140, 125-144, 1959 Histochemistry and cytochemistry See entry no. 43 Biophysics See entry no. 56 256 ..SUPPLY AND DEMAND" SERVICE for Laboratory Animals Transactions should be carried out directly between the interested parties. We do not take any responsibility either for the transactions themselves, or in matters relating to prices, in- and export regulations, animal protection regulations etc. With each new list all previous lists become invalid. A. LIST OF SPECIES AVAILABLE with numbers referring to List B. Unless otherwise indicated, most items available throughout the year. GENERAL Australian spp. PROTISTA Amoeba proteus Didymium nigripes Paramecium bursaria Physarella oblonga Stentor spec. VERMES Dugesia dorotocephala Dugesia gonocephala Enchytraeus albidus Haemopis grandis Lumbricus terrestris Macrobdella decora Ophryotrocha puerilis Phagocata gracilis ARTHROPODA Crustacea Armadillidium vulgare Artemia (gracilis?) Artemia salina (several strains) Cambarus spec. 22i) 252) 63) 29 63) 12-*) 35) 18 252) 13 13 13 26 35) 326) 5?) 33 13 Porcellio laevis 326) Arachnoidea Argiope spec. 13 Latrodectus spec. 13 Tarantulas spec. 13 Myriopoda Julus spec. 13 Scolopendra spec. 13 Spirobolus spec. 13 Insecta Aedes aegypti 40 Anasa spec. 13 Anopheles gambiae 40 Anopheles maculipennis 40 Anopheles stephensi 40 Blattella germanica 252) Cecropia spec, (cocoons) 13 Cynthia spec, (cocoons) 13 Dixippus morosus 252) Drosophila spp. 178), 33 Drosophila melanogaster (wild and mutant types) 159) Drosophila melanogaster 178) Drosophila virilis 178) Echidnophaga gallinacea 40 on special request or on exchange basis in exchange for Pipa americana in exchange for other Eumycetozoina in lab. culture in exchange for other spp. or races of Stentor in exchange for European Turbellaria in exchange for Cylisticus convexus, Oniscus Asellus (Isopoda) in exchange for A. salina eggs in exchange for Dros. spp. in exchange for wild type Dros. mel. 257 27 13 30i°; 3Qio; 11 10 Ephestia kuhniella (mutant strains) Ephestia kuhniella (normal and mutant strains) Formicidae Formica polyctena (Apr.-June young queens) Formica rufa (Apr.-June: young queens) Habrobracon spp. (Stock Center, including various mutants, inbred lines and multiple-marked strains of several species) Habrobracon juglandis (stock no. 33) Isoptera (various African, European and American spp.) 40 Lethocerus spec. 13 Melanoplus spec. 13 Melanoplus differentialis diff. 2 Musca domestica (NAIDM species) 7 Odonata 13 Oncopeltus fasciatus 8 Ornithodorus moubata 40 Periplaneta americana 252), 27 Phyllophaga spec. 13 Pieris rapae 13 Plodia interpunctella 29 Polyphemus spec, (cocoons) 13 Pseudeucoila bochei 3711 Ranatra 13 Reduviidae (various spp.) 40 Tenebrio molitor 252) Tetrodontophora bielanensis (March-Nov. ) 39 Xenopsylla cheopis 40 Zaprionus ghesquierei 3711 Zaprionus vittiger 3711 MOLLUSCA Anodonta spec. 13 Campeloma spec. 13 Goniobasis spec. 13 Limax spec. 13 Lymnaea palustris (photo- periodic, breeds on long days) 1 Physa spec. 13 Planorbis spec. 13 Watasenia scintillans (females with ripe eggs, May-July) 20 TENTACULATA Bugula avicularia 28 Bugula neritina 28 PISCES Lebistes reticulatus (mutant types Cream, Blond, Gold, Flavus, Maculatus; Sept.- June) 1 AMPHIBIA Urodela Ambystoma mexicanum (occasionally) 41 Ambystoma tigrinum 13 Amphiuma spec. 13 Cynops (Triturus) pyrrhogaster 1612) Hynobius retardatus (Apr.-May) 19 Necturus maculosus 13 Pleurodeles waltlii 3113) Triturus alpestris (March-Apr.) 3814) Triturus cristatus (March-Apr.) 3814) Triturus cristatus Danubialis 3113) Triturus pyrrhogaster 21 Triturus torosus 13 Triturus viridescens 13 Triturus vulgaris 3113) Triturus vulgaris (March-Apr.) 3814) Anura Acris gryllus 13 2) 10) ") 12) 1.3) 14) 258 in exchange for Pipa americana we wish to obtain various Attini (young colonies with queens) in exchange for Lygaeus spec. (Hemiptera) in exchange for Rana esculenta, R. arvalis in exchange for Anolis carolinensis in exchange for Triturus viridescens Alytes obstetricans (March-Apr.) Bombina bombina Bombina variegata Bufo americanus Bufo bufo (March-Apr.) Bufo marinus Bufo terrestris Bufo valliceps (Apr. -July) Discoglossus pictus (March- June; Nov. -Dec.) Discoglossus pictus (Jan. -June) Hyla arborea Hyla cinerea Hyla crucifer Phrynosoma spec. Rana catesbeiana Rana clamitans Rana dalmatina (March-Apr.) Rana dalmatina Rana esculenta Rana palustris Rana pipiens Rana pip. sphenocephala (Febr.-May) Rana pip. sphenocephala Rana sylvatica The supply of Aves and Mammalia is covered by the "International Com- mittee on Laboratory Animals" (Hon. Executive Seer.: Dr. W. Lane-Petter, Laboratory Animals Centre, M.R.C. Laboratories, Woodmansterne Road, Carshalton, Surrey, England). Scaphiopus Holbrookii 13 2415) Xenopus laevis 252) 3113) 3113) 13 REPTILIA Chelonia 2415) Amyda ferox 13 13 Chelydra spec. 13 13 Chrysemys picta 13 4 Clemmys spp. 13 Emys spp. 13 3516) Emys orbicularis 3113) Graptemys spec. 13 36 Kinosternon spec. 13 3113) Macrochelys spec. 13 13 Malaclemys terrestris 13 13 Pseudemys elegans 13 13 Sternotherus spec. 13 13 Terrapene spp. 13 13 Crocodilia Caiman spec. 13 2415) Alligator mississipiensis 13 3113) 3113) 13 13 Lacertilia Anolis carolinensis 13 Lacerta muralis 3113) Lacerta viridis 3113) 4 Sceloporus spp. 13 13 Ophidia 13 Thamnophis spec. 13 2) 13) 15) 16) in exchange for Pipa americana in exchange for Anolis carolinensis in exchange for Hyla (fixed stages) in exchange for Ambystoma mexicanum B. LIST OF NAMES AND ADDRESSES (geographical order) N. A M E R I C A United States 1. DEPT. OF BIOLOGY, Wesleyan Univ., MIDDLETOWN, Conn. 2. ARGONNE NAT. LAB, 9700 South Cass Ave., ARGONNE, 111. 3 Dr. E. KRUGELIS-MacRAE, DEPT. OF ANAT., Univ. of Illinois, 1853 W. Polk St., CHICAGO 12, 111. 259 4. DEPT. OF ZOOLOGY, Newcomb College of Tulane Univ., NEW ORLEANS 18, La. 5. DEPT. OF BIOLOGY, Wayne State Univ., DETROIT 2, Mich. 6. DEPT. OF ZOOLOGY, Univ. of Minnesota, MINNEAPOLIS 14, Minn. 7. BELLEVUE MEDICAL CENTER, New York Univ., 550 First Ave., NEW YORK 16, N.Y. 8. BIOLOGICAL LAB., Fordham Univ., NEW YORK 58, N.Y. 9 Dr. E. W. CASPARI, DEPT. OF BIOL., Univ. of Rochester, ROCHESTER, N.Y. 10. BIOLOGICAL DEPT., Southwestern at Memphis, MEMPHIS 12, Tenn. 1 1 . BIOLOGY DIVISION, Oak Ridge National Lab., OAK RIDGE, Tenn 12. Dr. V. TARTAR, Univ. of Washington, NAHCOTTA, Wash. 13.* THE LEMBERGER CO., P.O. Box 482, OSHKOSH, Wis. ASIA India 14.* VITA LIMITED, 9 Ludlow Castle Road, DELHI Japan 15. NATIONAL INSTITUTE OF RADIOLOGICAL SCIENCES, Div. of Genetics, 250, Kurosuna-cho, CHIBA 16. ZOOLOGICAL LABORATORY, Hiroshima Univ., HIROSHIMA CITY 17. ZOOLOGICAL INSTITUTE, College of Science, Kyoto Univ., Sakyo-ku, KYOTO 18. BIOLOGICAL LABORATORY, Osaka Lib. Arts Univ., Te vnoji-ku, OSAKA 19. ZOOLOGICAL INSTITUTE, Hokkaido Univ., SAPPORO 20. BIOLOGICAL INSTITUTE, Toyama Univ., Hasumachi 22, TOYAMA 21. DEPT. OF ANATOMY, Mie Prefectural Univ. Sch. of Med., TSU-CITY AUSTRALIA Australia 22. DEPT. OF ZOOLOGY, New England Univ., ARMIDALE, N.S.W. EUROPE Belgium 23.* REPTILAMPHIBIA (Felix Vandevelde), Remerstr., BAAL, Brabant * Biological Supply Houses, Zoological Collectors, etc. 260 France 24. LAB. DE BIOLOGIE ANIMALE, Fac. des Sci. de Bordeaux, .351 Cours de la Liberation, TALENCE (Gironde) Germany (East) 25. ZOOLOGISCHES INSTITUT, Univ. Rostock, Stalinplatz, ROSTOCK Germany (West) 26. INST. FOR EXPERIMENTELLE KREBSFORSCHUNG, Voss-Str. 3, HEIDELBERG 27. INST. FOR ENTWICKLUNGSPHYSIOLOGIE, Gyrhofstr. 17, KOLN-Lindenthal 28. ZOOLOGISCHES INSTITUT der Universitat, Luisenstr. 14, MQN- CHEN 29. Prof. Dr. V. SCHWARTZ, Zoologisches Institut der Univ., Holderlin- str. 12, TUBINGEN 30. INST. FUR ANGEWANDTE ZOOLOGIE der Universitat, Rontgen- ring 10, WQRZBURG Hungary 31. INSTITUTE OF ANATOMY, Univ. Med. Sch., Dischka u 5, PECS Italy 32. ISTITUTO DI ZOOLOGIA della Univ., Via Androne 25, CATANIA 33. ISTITUTO DI GENETIC A, Univ. di Milano, Via Celoria 1 0, MILANO 34.* STAZIONE ZOOLOGICA, Villa Comunale, NAPOLI (101) 35. ISTITUTO DI ZOOLOGIA, Via Archirafi 18, PALERMO 36. ISTITUTO DI ANATOMIA COMPARATA, Via Archirafi 22, PA- LERMO Netherlands 37. GENETISCH LABORATORIUM der Rijksuniversiteit, 5e Binnenvest- gracht 8, LEIDEN Poland 38. DEPT. OF EXPERIMENTAL ZOOLOGY, Polish Academy of Sciences, ul. Kopernika 7, KRAK6W 39. DEPT. OF ZOOLOGY, Jagiellonian Univ., Sw. Anny 6, KRAKOW Switzerland 40. SCHWEIZERISCHES TROPENINSTITUT, Socinstr. 57, BASEL United Kingdom 41. DEPT. OF BIOLOGY AS APPLIED TO MEDICINE, Middlesex Hosp. Med. Sch., LONDON W- 1 261 Communications from the Hubrecht Laboratory I The team work project In connection with the development of the building project (see below) the next international team work will almost certainly not be held before 1964. In the meantime, however, there will still be available a limited number of places for individual foreign guest workers in the old building. II The building project Various factors have retarded this project. It is now hoped that the building activities can be started early in 1962. The new building could then be ready by the end of 1963. III The scientific staff In the beginning of 1961 the biochemist Dr. D. O. E. Gebhardt joined the staff. He is carrying out preparatory work for the future histo- and cyto- chemical unit. In the course of 1962 Dr. Kirstie Lawson (Cambridge) hopes to join the staff, and to start the organisation of the tissue- and organ-culture research unit. It is hoped that in the course of 1962 a biophysicist can be appointed, who will be asked to make a start with the biophysical approach to developmental problems, in connection with the establishment of a biophysical research unit. The three units mentioned will then already be well prepared before moving into the new building. Dr. J. Faber is hoping to go abroad for specialization in the field of develop- mental genetics in 1962/63. IV Guest workers Mr. Koki Hara (Nagoya), who has stayed at the Laboratory since 1958, obtained his Ph.D. from the University of Utrecht in November 1961, on a thesis entitled "Regional neural differentiation induced by prechordal and pre- sumptive chordal mesoderm in the chick embryo". Two members of the fourth international team stayed on afterwards at the Laboratory and concluded their studies in 1961: Dr. M. I. Michael (Alexan- dria) carried out an experimental analysis of the development of the sensory placodes, the cephalic ganglia and other derivatives of the head neural crest in urodeles, while Mr. M. Corner (New York) studied the properties of isolated neural plate regions during the neurula stages in amphibians by means of the explant technique. Miss F. E. Ince (London) stayed at the Laboratory for three months to study experimental techniques. Two new guest workers arrived in 1961: Dr. M. S. Falakali (Izmir, Turkey) will carry out a quantitative analysis of the distribution of the neural crest along the margin of the neural plate in amphibians, while Mr. J. D. Babb (Gambier, Ohio) is planning an investigation concerning the propagation of inductive influences through competent ectoderm in urodeles. 262 V The Central Embryological Library A The reprint library During the next two years the reprint library, at present comprising about 25.000 titles, will be subjected to an internal reorganisation. This will include some adaptive changes in the system of classification, which will make it practically identical to that to be used henceforth in the "General Embryological Information Service" (cf. the Introduction of the present issue). It is hoped to finish this project before moving into the new building. B Services rendered by the C.E.L.; loan conditions 1 . Every embryologist can ask for information about literature of certain authors, for surveys of literature on certain subjects (according to the classification-system of the G.E.I.S.), for surveys of newly published literature, etc. 2. Every embryologist can borrow reprints which are not available in his own country. Books and Normal Tables are usually not given on loan, volumes of periodicals are only lent to investigators in the Nether- lands. Conditions: a. Reprints may be borrowed for 3 months at the most (for the Netherlands 1 month), time for shipment not included. b. The receipt added to the consignment must be returned by return of post, after having been controlled and signed. c. In case of high forwarding charges these have to be partly carried by the applicant. 3. Every embryologist can personally consult the C.E.L. at all times. 4. The C.E.L. will be at the disposal of every embryologist working at the Hubrecht Laboratory. VI The Central Embryological Collection of slides and material A Concise Catalogue Copies of the "Concise Catalogue" of the Collection, which was issued in 1953, are still available on request. B Loan conditions Conditions: 1. Slides, material in paraffin and/or material in alcohol can only be bor- rowed for o n e y e a r, after which it has to be returned automatically if no special request for extension of the loan has been made by the investigator, and has been approved by the staff of the Hubrecht Labor- atory. 2. Material in alcohol or paraffin has to be returned as such or in the form of well prepared slides which have been sectioned, stained and embedded properly, clearly labeled (name of species, thickness and direction of sectioning, method of staining, etc.) and numbered according to given indications. 3. Costs of transport may be charged if these exceed reasonable limits. 263 4. Two copies of those publications dealing with material from the Central Embryological Collection should be sent to the Central Embryological Library of the Hubrecht Laboratory. 5. If material from the Central Embryological Collection has been used in investigations, it is respectfully requested that this be indicated in the publications concerned. Restrictions: 6. Very rare or regularly consulted material can only be studied at the Hubrecht Laboratory. 7. Material of great historical value cannot given on loan. 8. If material has not been treated properly or (after special request) has not been returned in time by an investigator, material will no longer be lent to the person in question. VII Photographic Reproduction Service The Hubrecht Laboratory makes photostats on request of papers present in the Central Embryological Library or borrowed from elswhere. The negatives wil remain at the Laboratory. Prices per page (both text and plates): Positive microfilm (25 X 36 mm): H./ 0.15 ( = ± $ 0.04) Enlarged prints 9 X 12cm (box camera size): H./ 0.15 (=±$0.04) 13 X 18 cm (average page): H./ 0.20 (= ±$0.05) 18 X 24 cm (large page): H.f 0.25 (=±$0.07) 264 Communications of the , .International Institute of Embryology (Section of Developmental Biology ol the I.U.B.S.) The I. I.E. announces with great regret the death of its fellow A. J. P. van den Broek (February 1961) and of its member T. Perri (October 1960). The Symposium to be held in September 1964 in the U.S.A. will deal with aspects of organogenesis. A full program will be published later. This year it is 50 years since the I. I.E. was founded. The last General Assembly asked the undersigned to prepare a short survey of the history of the I. I.E. This survey follows below. "L'INSTITUT INTERNATIONAL D'EMBRYOLOGIE" (1911—1961) On the occasion of the 50th anniversary of the I. I.E. it seems desirable to present a short survey of the history of this Institution in the course of half a century. This history acquires a wider perspective against the back- ground of the development of the science of embryology, a background which may enable one to judge to what extent the I. I.E. has fulfilled its purposes till the present day, and in what respects its present form of organisation and its activities can be better adapted to its aims for the future. The initiative for the foundation of the "Institut International d'Embryolo- gie" was due to the embryologists A. A. W. Hubrecht, A. Keibel, and R. Assheton; the actual foundation took place in Utrecht, at the Zoolog- ical Institute, on the 4th of June, 1911. The I.I.E. was founded as an inter- national, private and purely scientific organisation, which, as a consequence of the special interests of its founders, was originally devoted exclusively to the study of comparative embryology of the vertebrates, and more particularly of those mammals which, owing to the increase and expansion of the human population, were in danger of soon becoming extinct. Moreover, the I.I.E. intended to create international relations between workers in this field, and to facilitate the scientific work of its members by making provision for the admission of non-scientific corresponding members, who could render their help in supplying the necessary embryonic material1). Finally, the I.I.E. intended to collect funds for the establishment of orderly collections of embryonic material, again of rare mammalian species in particular; collections which were to be brought together in international centres, where they would be at the disposal of all qualified embryologists. According to its original statutes the I.I.E. consisted of honorary members, ordinary members, supporting members and corresponding members. The num- ber of honorary members was restricted to 20, that of ordinary members to 40; at the initial meeting in Utrecht 18 honorary members and 40 ordinary members were nominated. M It must be admitted that this objective was a rather opportunistic one. 265 The I. I.E. held regular meetings in 1912, in Freiburg (Germany), and in 1914, in Cambridge (England). Then the first world war broke out, and in 1915 Prof. Hubrecht died, followed shortly afterwards by Prof. Assheton. This would certainly have been the end of the I. I.E., had not the relatives of Prof. Hubrecht, in co-operation with the Royal Netherlands Academy of Sciences and Letters, established the Hubrecht Foundation in 1916, and founded the Hubrecht Laboratory with the purpose that is was to be the first of the international centres circumscribed in the statutes of the I. I.E. This centre was established in memory of Prof. Hubrecht, and with the aim of continuing his pioneer work. It should also accomodate the unique collection of microscopical slides and alcohol-preserved material brought together by Prof. Hubrecht himself, and extended by Prof. A. Dohrn and some of the other members of the I. I.E. The Laboratory and collection were housed in the former official residence of the Hubrecht family in Utrecht, and placed under the supervision of the Royal Netherlands Academy of Sciences and Letters; Dr. D. de Lange, a former pupil of Prof. Hubrecht, was appointed as its first director in 1917. During the years of war, and the first decade after peace had returned, the scientific activity of the Hubrecht Laboratory was the only remaining symptom of the existence of the I.I.E. Any further activity was prevented by the international, economical and political situation. Not before the year 1930 was a new initiative taken. At the third international Anatomical Con- gress in Amsterdam, on August 6, 1930, the Dutch members J. Boeke and J. W. van Wijhe brought together all the members of the I.I.E. present in Amsterdam on that occasion. This led to the nomination of twenty odd new members and the appointment of a provisional committee, consisting of J. Boeke and the newly nominated members H. F. Nierstrasz and D. de Lange, who prepared a revision of the old statutes of the I.I.E. Although experimental analysis had already found its way into the study of animal development by the end of the last century through the pioneer work of W. Roux and others, and was already achieving success in the beginning of this century in the work of H. Spemann, R. G. Harrison and A. Brachet and their schools, is was not until August 1930 that a number of experimental embryologists were nominated as members of the I.I.E., and not until September 1933 that the I.I.E. gave experimental embry- ology a modest place beside the descriptive and comparative branches in its revised statutes, which were adopted in that year at its fifth regular session in Utrecht. With the revision of the statutes the number of active members was increased from 40 to 50. Moreover, an emeritus membership was insti- tuted, going into effect with the age of 70. After its revival the I.I.E. still retained the character of a private, interna- tional club of distinguished embryologists, with a strictly limited number of members. It continued its administrative and scientific activities by the organi- sation of regular sessions: one in 1936, in Turin, and one in 1938, in London. However, normal activities could only be carried on for a period of about half a dozen years, after which threatening thunderclouds appeared again on the international political horizon. The outbreak of the second world war led once more to an interruption of several years in the international activities of the I.I.E.; the scientific work at the Hubrecht Laboratory remaining once 266 more its sole activity. This time the war even directly affected this last refuge of the I. I.E. through the German occupation of the Netherlands. Fortunately the building and collection escaped destruction. After the liberation in 1945. Dr. de Lange, no longer in good health, was unable to restore the activi- ties of the Hubrecht Laboratory, so that the last spark of the spirit of the I.I.E seemed to die out forever. It was again the Dutch members of the I.I.E. , this time J. Boeke, M. W. Woerdeman and Chr. P. Raven, who took the initiative in 1947 for a second revival of the I.I.E. They were stimulated by the suggestion of Prof. J. Needham, secretary of the International Union of Biological Sciences, to transform the I.I.E. into the "Embryological Section" of the I.U.B.S. Con- sequently, at the general Assembly of the I.I.E. on April 2, 1947, in Utrecht, it was decided to subject the statutes and by-laws of the I.I.E. to a second revision in order to adapt them to this new status. In the following year a large number of new members were nominated in order to fill up the places fallen vacant in the ten previous years. The new statutes and by-laws were adopted at the General Assembly held in Bern in 1949. Simultaneously new life was put into the Hubrecht Laboratory by the development of new plans and by the introduction of experimental embryology by the newly appointed adjunct director, Dr. P. D. Nieuwkoop. These plans were realised in the following years, under the general directorship of Prof. Chr. P. Raven. A number of aims of the I.I.E. were realised by the Hubrecht Laboratory in the following projects: 1) the reorganisation of the central collection of microscopical slides and alcohol-preserved material; 2) the foundation of a central reprint library on developmental biology with a bibliographical ser- vice; 3) the editing of the "General Embryological Information Service", a periodical aimed at stimulating international co-operation; 4) the editing of developmental Normal Tables, in casu one of an anuran species, elaborated by an international team of specialists; 5) the establishment of a number of adequately equipped working tables for individual guest-workers as well as for international teams of young scientists. These international activities called for a close co-operation between the I.I.E. and the Hubrecht Laboratory. On the other hand, the character of the I.I.E., as the Embryological Section of the I.U.B.S., required an independent development of this institution into a representative, world-wide organisation of embryologists. After a period of trial and error a satisfactory form of coope- ration between the two institutions seems to have been found, which guaran- tees the independence of both. This co-operation has taken the form of, on the one hand, an advisory function of the I.I.E. in those international administra- tive and scientific activities of the Hubrecht Laboratory which are sponsored bv the I.I.E.. and, on the other hand, an advisory membership in the Board of the I.I.E. for the Director of the Hubrecht Laboratorv. who acts as adjunct secretary-treasurer, since the administration of the I.I.E. is carried out at the Hubrecht Laboratory. The very rapid growth of the science of embryology, and the development of several specialisations within this field called for a further extension of the number of active members, which was first raised to 60, and later to 75. The restricted membership as such, however, was not in agreement with the general character of the sections of the I.U.B.S., which had an open mem- 267 bership. With maintenance of the historical tradition of a restricted member- ship, which now took the form of an honorary membership, or fellowship, an ordinary membership was instituted in 1952, after a third and more drastic revision of the statutes and by-laws. This revision granted the same rights to fellows and members, except for eligibility as member of the Board, which was reserved for fellows. At the General Assembly held in 1956, in Providence (U.S.A.), the first ordinary members were nominated. Their number was further extended in 1957, in St. Andrews (Scotland), and recently in 1960, in Pallanza (Italy), so that at present the number of members (202) already markedly surpasses the number of active and emeritus fellows (94). At the last General Assembly, in Pallanza, a motion was deposited, asking for the abolishment of fellowship, so that only one kind of membership should remain. This suggestion, which will be examined by a special committee, will, when accepted, alter rather drastically the historical character of the I. I.E. From its foundation in 1911 onwards the I.I.E. has been an honorary asso- ciation, of which scientists could only become a member by invitation. In this way it kept its membership restricted to persons of outstanding scientific merit, a procedure which has led to the establishment of the highest possible standards. A decision in this important matter must be left to the competence of the next General Assembly. Since the establishment of the I.I.E. as the Embryological Section of the I.U.B.S. in 1947, its activity has markedly increased. Besides the international administrative and scientific activities, carried into effect by the Hubrecht Laboratory as its first recognised international centre, the I.I.E. has held a number of General Assemblies combined with international symposia and congresses. The first of these took place in 1949, in Bern (Switzerland), where the symposium enjoyed an audience of 30 embryologists. The second meeting was organised in 1952, in Utrecht (Netherlands). Here the symposium was attended by 25 embryologists. Both these symposia were by invitation only. The third meeting, convened in 1956 in Providence (U.S.A.), bore the character of an international congress, in which 256 embryologists participated. The fourth meeting, held in 1957 in St. Andrews (Scotland) was a business meeting only, and was attended by 16 members. The fifth General Assembly gathered in 1960 in Pallanza (Northern Italy) and enjoyed the attendance of 42 members, while the corresponding symposium brought together 168 embryologists. With the rapid increase in the number of its members the I.I.E. will soon be facing the problem of very high numbers of participants at its sym- posia and congresses. As experience has shown, this may interfere with scien- tific discussion, which unquestionably forms the most important aspect of international scientific meetings. This problem already constituted an impor- tant point of discussion at the last General Assembly. At the end of this short survey of the eventful history of the I.I.E., one may ask whether the I.I.E. in its present form actually meets the requirements for a world-wide, representative organisation for the advancement of the science of embryology. Although many countries are reasonably well repre- sented among its members, there are no doubt still a number of missing links in this respect. These may partially be filled up at the following General Assemblies. However, the rather high standard applied also to ordinary 268 membership l) prevents the more isolated and scientifically less developed countries in Asia, Africa and Latin America from being represented to any extent in the I. I.E. In the interest of stimulating modern research in these parts of the world, the admission of "associate members" may be considered. The rapidly developing specialisation within the field of embryology, partic- ularly where it borders upon genetics, biochemistry and biophysics, leads to the question whether the rather sharp borderlines between the various sec- tions of the I.U.B.S. are not to some extent disadvantageous to the develop- ment of the science of biology as a whole. In this respect a more pronounced overlapping of membership may be advisable. In this way in any section also the related disciplines would be represented by at least some specialists. On the other hand, the present subdivision of the I.U.B.S. may be revised in the near future2) in order to avoid unnatural separations in the science of biology. As far as the I. I.E. is concerned, its principal aim should be the stimulation of co-operation and synthesis of the various disciplines within the field of development biology. To this end this field should be taken in its widest possible sense. Finally there is still another aspect which requires further consideration. The financial means which the I. I.E. finds at its disposal, are undoubtedly too restricted for its international activities. This limits the number of scien- tific meetings the I. I.E. is able to sponsor, and rigorously restricts the num- ber of invited speakers. Up till now the I.I.E. always had to depend upon national funds as far as the more general and social aspects of its meetings were concerned, which implies that financially less powerful countries remained deprived of these stimulating scientific manifestations3). In conclusion we may say that, provided the I.I.E. actually succeeds in forming the binding cement for all the disciplines, old and new, in the field of developmental biology, it may face the future with confidence, and, on entering upon its second half-century, may be accompanied with the best of wishes 4). The Adjunct Secretary-treasurer, P. D. NIEUWKOOP x) the requisite being a minimal period of about ten years of active research in the field of developmental biology. 2) At the last General Assembly of the I.U.B.S. the name of the Embryological Section was changed into "Section of Development Biology", a change indicating an extension of its activities to the entire field of biology. 3) Up till now international congresses could only be organised in the U.S.A., where funds can be made available from private foundations and governmental scientific institutions. 4) In June 1961, the actual month of the celebration of the 50th anniversary, the text of this article was sent to all fellows and members of the I.I.E. 269 Announcements of recently published books on development and related subjects Notice: Since 1957 these announcements are generally prepared by Dr. J. Faber, first scientific officer at the Hubrecht Laboratory, and manager of the "General Embryological Information Service". Group A (books [or instruction) : ALLAN, F. D., 1960 — "Essentials of human embryology" BLECHSCHMIDT, E., 1961— "Die vorgeburtlichen Entwicklungsstadien des Menschen" BOENIG, H., 1961 — "Leitfaden der Entwicklungsgeschichte des Menschen" (6th revised edition) LAUGE-HANSEN, N., 1960 — "The development and the embryonic anat- omy of the human gastro-intestinal tract" NEEDHAM, J., 1959 — "A history of embryology" (2nd revised edition) SUSSMAN, M., 1960 — "Animal growth and development" "Nomina Anatomica", 1961 (2nd edition) Group B (books for research, etc.): ABERCROMBIE, M. and J. BRACHET (editors), 1961 — "Advances in morphogenesis" (Vol. I) ALBERT, F. and P. B. MEDAWAR (editors), 1959 — "Biological problems of grafting" BERRILL, N. J., 1961 — "Growth, development and pattern" BOURNE, G. H. and J. F. DANIELLI (editors), 1961 — "International review of cytology" (Vols. 10 & 11) BRACHET, J., 1960 — "The biological role of ribonucleic acids" BRACHET, J. and A. E. MIRSKY (editors), 1961 and 1960 — "The cell" (Vols. Ill and IV) CAJAL, S. R. y, 1960 — "Studies on vertebrate neurogenesis" FICQ, A., 1961 — "Contribution a l'etude du metabolisme cellulaire au moyen de la methode autoradiographique" GORDON, G. C, 1961 —"Congenital deformities" GUTTENBERG, H. v., 1960 — "Grundziige der Histogenese hoherer Pflan- zen; I. Die Angiospermen" H ADORN, E., 1961 — "Developmental genetics and lethal factors" KOWLESSAR, M. (editor), 1961 — "Physiology of prematurity" LANDAUER, W., 1961 — "The hatchability of chicken eggs as influenced by environment and heredity" LUCAS, A. M. and C. JAMROZ, 1961 —"Atlas of avian hematology" 270 MITSKEVICH, M. S., 1959 — "Glands of internal secretion in the embryonic development of birds and mammals" NOWINSKI, W. W. (editor), 1960 — "Fundamental aspects of normal and malignant growth" PARKES, A. S. (editor), 1960 — "Marshall's physiology of reproduction" (3rd edition, Vol. I, part I and II) PICKEN, L., 1960 — "The organization of cells and other organisms" RAVEN, Chr. P., 1961 — "Oogenesis; The storage of developmental in- formation" SALISBURY, G. W. and N. L. VANDEM ARK, 1961 — "Physiology of reproduction and artificial insemination of cattle" SHETTLES, L. B., 1960 — "Ovum humanum; Wachstum, Reifung, Ernah- rung, Befruchtung und friihe Entwicklung" TARTAR, V., 1961 — "The biology of Stentor" WALKER, P. M. B. (editor), 1960 — "New approaches in cell biology" WILLMER, E. N.( 1960 — "Cytology and evolution" WIRTSCHAFTER, Z. T.. 1960 — "The genesis of the mouse skeleton: A laboratory atlas" Symposium report, 1960 — "Symposium on mammalian genetics and repro- duction" "ESSENTIALS OF HUMAN EMBRYOLOGY" 1960 by F. D. Allan Oxford Univ. Press 225 pp., 120 figs. New York Price: 40 s. This textbook has been written exclusively for the use of medical students. It reflects the need for a synoptic text, created by the continuous expansion of the medical curriculum. The book contains what may probably by called the absolute minimum of factual material, presented in a very condensed style. It is obvious that many generalizations had to be made, and that discussions of most controversial issues had to be avoided. The book should be supplemented by practical anatomy courses, particularly microscopic ones. Only the basic pattern of organ development is given, and histogenesis is similarly treated only very basically. There is a final chapter dealing with teratology. The list of general referen- ces is very limited, and consists only of books. The book is concluded by an alphabetical index. All illustrations are line-drawings, mostly executed by the author himself. Most of them are quite good, but those illustrating the earliest stages of development are often highly diagram- matical (no doubt on purpose), and in some instances lack sufficient clarity. Several of the pointers cannot be traced to the structures they are meant to indicate. 271 "DIE VORGEBURTLICHEN ENTWICKLUNGSSTADIEN DES MENSCHEN" 1961 by E. Blechschmidt S. Karger, Basel 688 pp., 579 figs., 6 tbs. Price: s.Fr. 96.— This large volume is essentially an atlas. It is predominantly concerned with the first two months of development, i.e. the stages leading up to the establish- ment of the basic anatomical pattern. Although the treatment is continuous, three main sections may be distinguished, viz. "ova", "embryos" and "body regions with their organs". Throughout the book German and English are used side by side in parallel fashion. The basic plan of the book is such that the righthand page always shows the plates, while on the facing page appear the legends to the figures, and a verbal account of the processes illustrated. No attempt has been made to designate the stages depicted by numbers or letters. The length of the embryos is used as the stage criterion troughout, while days, weeks and months are used to subdivide the development into general periods, which are indicated at the tops of the plates in the first two sections. In the third section their place is taken by indications of the organs shown. The illustrations, partly drawings, partly photographs, are of superb quality, which is in part the result of outstanding techniques of reproduction and printing. The theoretical background for the interpretation of the plates is formed by the author's original ideas concerning the "biodynamic" factors underlying developmental processes. These factors are envisaged mainly as geometrical and mechanical interrelations, growth movements, etc. It will be understood that this feature gives the book a rather pronounced personal quality. The book also contains a glossary, a restricted list of references, a very brief tabular outline of the history of embryology, age tables of human embryos, a tabular survey of ossification, and finally a very extensive subject index. Lay-out and printing of the book are excellent. "LEITFADEN DER ENTWICKLUNGSGESCHICHTE DES MENSCHEN" 6th edition, 1961 by H. Boenig f VEB Georg Thieme (revised by R. Bertolini) Leipzig 320 pp., 263 figs. Price: DM 20.40 This is a revised edition of a book which appeared first in 1937, and under- went no essential changes until the fifth edition (1953). In the present edition the advances of the last two decades have now been incorporated. The illustra- tive material has also been thoroughly revised and extended. The book was written especially for the use of medical students, and therefore exclusively concerns the human embryo until term. Literature ref- erences are not given. The treatment is limited mainly to morphogenesis, histogenesis being treated occasionally. Developmental anomalies are also treated only occasionally. The book is in three sections, one dealing with gametes, menstruation and fertilization, one with early development, placentation and gravidity, and one with organ development. The illustrations are numerous and on the whole of good quality. The book is concluded by a subject index. 272 "THE DEVELOPMENT AND THE EMBRYONIC ANATOMY OF THE HUMAN GASTRO-INTESTINAL TRACT, a new basis for the study of anomalies of the gastro-intestinal tract" 1960 by N. Lauge-Hansen Centrex Publ. Cy. 94 dp 147 fiqs., 29 diagrs. Eindhoven, Netherlands FF b Price: H.fl. 9.75 The author of this book is a radiologist, who in the course of his studies on intestinal anomalies found that in certain respects the normal development of the intestinal tract differs markedly from the generally accepted picture. He therefore made a fresh study of this subject on human embryos measuring from 12 mm in length upwards. The main part of the book is illustrated with numerous photographs and very clear coloured diagrams. The book is supplemented with a series of radiographs of gastro-intestinal anomalies, with brief comments. "A HISTORY OF EMBRYOLOGY" 2nd revised edition, 1959 by J. Needham Cambridge University Press 304 pp., 25 figs., 18 pis., 3 charts Price: 52 s. 6 d. This is the second edition of a classical book, first published in 1934. The book has been revised and extended with the assistance of Dr. A. Hughes, but its form has remained unchanged. It deals with the history of embryology from antiquity until about 1800. The book is profusely illustrated. "ANIMAL GROWTH AND DEVELOPMENT" 1960 by M. Sussman ^ Prentice-Hall. Inc. ("Foundations of Modern Biology" Englewood Cliffs, N.J. Series) Price: 21 s- 114 pp., 45 figs, (paper-bound) This little book forms part of a series which aims at an adequate presentation of the dynamic state of modern biology, to the benefit of students and teachers. The present book indeed presents a very modern approach. In discussing the problems of development in its widest sense the author does not restrict himselt to the conventional examples, but often draws upon the sources of the most recent research, carried out on organisms which until now have hardly pene- trated into books of elementary instruction, such as Gonyaulax, Acetabulars, Achlya, and the cellular slime molds. The book consists of eight chapters, three of which deal respectively with sinqle cells, primitive multicellular organisms, and coelenterate development. Aspects of the experimental embryology of the vertebrates are dealt with in three other chapters, while a final chapter discusses general aspects of growth and form. , , ,. r , , i Literature references are not given, except for a short list of general books. The illustrations are simple but clear line drawings and diagrams. An alpha- betical index concludes the book. 273 Of course a book of this size cannot present more than the merest outline. Still, it will form stimulating collateral reading alongside the existing, more elaborate but more con- ventional text books. "NOMINA ANATOMICA" second edition, 1961 100 pp. Excerpta Medica Foundation (paper-bound) Amsterdam-London-Milan-New Y >rk The first edition of the official Nomina Anatomica, prepared by the Inter- national Anatomical Nomenclature Committee, was published for private circu- lation in Paris in 1955. It is now generally referred to as the P.N. A. The present list is a revision of the P.N. A., approved by the Seventh International Congress of Anatomists, held in New York in 1960. The additions and changes amount to less than 4 % of the total number of terms in the P.N. A. The editors are of the opinion "that no major changes will be required for many years, since international agreement has now been reached on all existing divergences in terminology". In the Introduction, the I.A.N.C. announces the establishment of Sub-Committees on Histology and Embryology. Their respective Honorary Secretaries are: Prof. M. Niizima, Tokyo, and Prof. H. W. Mossman, Madison, Wisconsin. "ADVANCES IN MORPHOGENESIS" Vol. I, 1961 Editors: M. Abercrombie and J. Brachet Academic Press Inc. 445 pp., 161 figs. New York and London Price: $ 12.50 This is the first volume of a new serial publication in book form, which promises to be of considerable interest to the readers of the "General Embry- ological Information Service". In their preface the editors state that the series is intended to help in linking up the various branches of biology that deal with development. The latter is defined very broadly as "the new formation or the remodelling of living material". The series will contain review papers which will have a broad range of style and content. Some of them will be centred mainly around the own work of the author, while others will be broader in scope. The present volume contains nine papers, which range in size from about 30 to about 60 pages. Each is preceded by a table of contents and followed by a list of references. The titles of the papers are as follows: ( 1 ) A chemical approach to the problem of the organizer (T. Yamada); (2) The embryology of Ascid- ians (G. Reverberi); (3) Regeneration of vertebrate appendages (R. J. Goss); (4) Action of morphostatic substances and the role of proteases in regenerating tissues and in tumour cells (F. E. Lehmann); (5) Determining factors in cell growth: some implications for morphogenesis in plants (F. C. Steward and H. Y. Mohan Ram); (6) The differentiation of vertebrate pigment cells (Ch. E. Wilde, Jr.); Limb morphogenesis (E. Zwilling); (8) Morphogenesis of the vertebrate eye (G. V. Lopashov and O. G. Stroeva); (9) Structural and dynamic aspects of the development of the Teleostean egg (Ch. Devillers). 274 Most of the papers are well illustrated. Only one (no. 7) is not illustrated. The volume is concluded by author and subject indexes. With very few exceptions the most recent literature cited in the various bibliographies dates from 1959. This leads to the conclusion that probably at least a year has elapsed between submission of the manuscripts and publication. If possible, a reduction of this interval in future volumes would be very important. Perhaps important new literature might be added in the form of addenda during the editorial phase. The production of the book is entirely up to the high standards set by previous issues from the Academic Press. We may congratulate the editors and the publishers on their valuable initiative. 'BIOLOGICAL PROBLEMS OF GRAFTING" 1959 Editors: F. Albert and P. B. Medawar Blackwell, Oxford 453 pp. Price: 50 s. This book contains the proceedings of a Syposium held in Liege in March 1959. The book was published already in July of the same year. Although that is now more than two years ago, the book still seems important enough to be briefly reviewed in this edition. The book contains 29 papers presented at the Symposium, with the dis- cussions which followed them. The large majority of the papers are in English. Most participants came from Belgium, England and the U.S.A. Almost all papers are concerned with original research on the immunological aspects of grafting in adult animals, mostly mammals. Although developmental aspects are left out of consideration, anyone carrying out or planning developmental research in this field will certainly derive much benefit from reading it. Unfortunately, the book lacks author and subject indexes. They have apparently fallen victim to the urge for rapid publication, which in itself is to appreciated greatly. Participants: Albert (Liege), Andre (Liege), Berrian (Bethesda, Md.), Betz (Liege), Brent (London), Cain (Washington, D.C.), Chevremont (Liege), Danis (Brussels), Desaive (Liege), Gorer (London), Hasek (Prague), Haskova (Prague), Honore (Liege), Hyatt (Washington, D.C.), Jensen (Copenhagen), Joubert (Lyon), E. & G. Klein (Stockholm), Knake (Berlin), Krohn (Birmingham), Lejeune (Liege), Loutit (Harwell), Mathe (Liege), Medawar (London), Merrill (Boston, Mass.), Mitchison (Edinburgh), Moureau (Liege), Murray (Boston, Mass.), Owen (Pasadena, Cal.), Prehn (Seattle, Wash.), Simonsen (Copenhagen), Siskind (New York), Stetson (New York), Trentin (Houston, Texas), Van Bekkum (Rijswijk), Voisin (Paris), Woodruff (Edinburgh), Zaalberg (Rijswijk). "GROWTH, DEVELOPMENT AND PATTERN" 1961 by N. J. Berrill W. H. Freeman & Cy. 555 pp., 253 figs. San Francisco, Cal. Price: $ 10.00 This book was pritten primarily for advanced students and postgraduates. It reflects to a large extent the personal views of the author, who has long been actively engaged in research on vegetative development in lower inverte- brates. One of his views is that the basic laws of development are better brought to light in the simpler processes of development from somatic tissues in lower animals and plants, than in the processes taking their origin in the specialized egg-cell. 275 The author is of the opinion that, before a physico-chemical analysis of development can be attempted, the process should first be completely analysed and classified on the next higher level of integration, i.e. the strictly biological level. Accordingly, his theoretical conclusions are expressed largely in terms of protoplasmic continuity in the organism, geometrical relations of developing territories, localized growth processes, the function of space and cell number, morphogenetic competition between territories, etc. The book is in four parts, of which the first deals with cells and cell aggregations, with emphasis on unicellular organisms, colonial Protista, slime molds and sponges. The second part, which is by far the largest, discusses vegetative development and regeneration in lower invertebrates and Ascidians. This part contains a wealth of information from many different sources. It is concluded by a short theoretical summary. Part three constitutes an excursion into the field of meristematic development in higher plants. Although, of course, by no means exhaustive, it is very valuable because it directs the attention of the zoologist to the existence of parallel processes and problems, of which he is often insufficiently aware. Finally, the fourth part presents a selection of those aspects of the develop- ment from eggs, which are especially pertinent to the approach followed in the book as a whole. This part is too incomplete to have much value in itself, and should rather be regarded as an appendix. The book is profusely illustrated with good drawings, all especially made or re-drawn by the same artist. The figures have explanatory legends. Systematically arranged bibliographies are given at appropriate places through- out the book. There is a combined author, taxonomic and subject index, of which the subject component could perhaps have been more detailed. "INTERNATIONAL REVIEW OF CYTOLOGY'' vols. 10 & 11, 1961 Editors: G. H. Bourne and Academic Press Inc. J. F. Danielli New York and London Vol. 10: 423 pp., 107 figs., 19 tabs. Price: Vol. 10: $ 13.00 Vol. 11: 356 pp., 156 figs., 8 tabs. Vol. 11: $ 11.00 These are the two latest volumes of an important serial publication containing review papers on a variety of subjects in the field of cellular biology. The reason why the present volumes are announced in the "General Embryological Information Service" is that they contain several contributions which are concerned with developmental biology, viz.: Vol. 10: (1) "The mechanics and mechanism of cleavage", by L. Wolpert, 53 pages; (2) "The growth of the liver with special reference to mammals", by F. Doljanski, 27 pages; and (3) "Epidermal cells in culture", by A. G. Matoltsy, 38 pages; Vol. 11: (1) "Cytology of the developing eye", by A. J. Coulombre, 34 pages; (2) "Use of inhibiting agents in studies on fertilization mechanisms", by Ch. B. Metz, 36 pages; (3) "The growth-duplication cycle of the cell", by D. M. Prescott, 28 pages; and (4) "Histochemistry of ossification", by R. L. Cabrini, 24 pages. All papers contain extensive bibliographies. The books are well printed and well illustrated, and contain author and subject indexes. 276 "THE BIOLOGICAL ROLE OF RIBONUCLEIC ACIDS" 1960 by J. Brachet Elsevier Publ. Cy. (6th Weizmann Mem. Lect. Ser.) A'dam, London, New York, Princeton 144 pp.. 41 figs. Price: H.fl. 20.— The three lectures forming this little book deal respectively with "RNA and protein synthesis", "The role of RNA in growth and morphogenesis", and "The role of the cell nucleus in RNA and protein synthesis". The name of the author warrants a thorough, objective, and at the same time stimulating treatment of the subject. The lectures were delivered in April, 1959, at the Weizmann Institute in Rehovoth. The book forms a good source of references for anyone working in this specialized field, as far as the literature prior to 1959 is concerned. The book is well illustrated and contains a subject index. "THE CELL" Vol. Ill, 1961 Vol. IV, 1960 Editors: J. Brachet and A. E. Mirsky Academic Press Vol. Ill: 440 pp., 106 figs., 13 tabs. New York and London Vol. IV: 511 pp., 157 figs., 18 tabs. Price: Vol. Ill: $ 12.00 Vol. IV: $ 18.00 Volume I of this treatise was announced in the eighth full issue, 1959 (page 239). In the meantime the subdivision of the subject matter has been altered, and the number of volumes to be published has been increased from 3 to 5. Volume I is now succeeded by Volumes HI and IV, the other volumes following later. Volume IV and V together will discuss "Specialized cells", while Volume II will deal with "Cells and their component parts". Volume III contains only two chapters, one on meiosis, by M. M. Rhoades, and one on mitosis and the physiology of cell division, by D. Mazia. It is particularly the latter chapter, comprising more than 300 pages, which is of significance to developmental biologists. Volume IV contains chapters on viruses, bacteria, protozoa, intracellular parasitism and symbiosis, neurons, visual photoreceptors, and muscle cells. None of these chapters is of specific significance to embryologists, although they of course contain a wealth of information. "STUDIES ON VERTEBRATE NEUROGENESIS" 1960 by S. R. y Cajal Charles C. Thomas (translated by L. Guth) Springfield, Illinois 446 pp., 196 figs. Price: 108 s. This is a full translation of a little-known book published in French in Madrid in 1929. The original book is a compilation of hardly accessible older studies by the author, published originally in Spanish. The book consists of six parts, which respectively deal with (1) general histogenesis of the nervous system, and the histological development of (2) 277 peripheral nerve terminations, (3) the spinal cord, (4) the cerebellum, (5) the cerebral cortex, and (6) the retina. All the original figures of Cajal are included in the book. They are very well reproduced. The translator has attempted to render the original text into current scientific English. He has added an author and a subject index, and has also carefully checked every single one of the more than 230 bibliographical references. The book is well printed and well bound. "CONTRIBUTION A L'eTUDE DU METABOLISME CELLULAIRE AU MOYEN DE LA METHODE AUTORADIOGRAPHIQUE" 1961 by A. Ficq Inst. Interuniv. des (Monographic no. 9) Sciences Nucleaires 121 pp., 37 figs., 26 tbs., 7 graphs Bruxelles (paper-bound) In this monograph the author, one of the collaborators of Prof. J. Brachet in Brussels, reviews mainly her own research in the field of autoradiography as related to protein metabolism, research carried out over a period of about ten years. Although concerned with cellular metabolism in general, these results are of interest to embryologists as well, since many of them concern developing systems, such as oocytes and embryonic cells. The monograph is illustrated with graphs and a number of well-reproduced photomicrographs. It contains a specialized bibliography of 8 pages, which is entirely up-to-date. "CONGENITAL DEFORMITIES" 1961 by G. C. Gordon E. & S. Livingstone Ltd. 128 pp., 113 figs. Edinburgh and London Price: 37 s. 6 d. Although the title of this monograph might suggest a text book, this is not the case. The book addresses itself almost exclusively to clinicians. Its core is formed by a discussion of the aetiology of congenital deformities of the hip, but other related deformities are also treated, against a general theoretical background. The illustrations consist mainly of photographs, mostly X-ray pictures. "GRUNDZOGE DER HISTOGENESE HoHERER PFLANZEN; I. DIE ANGIOSPERMEN" 1960 by H. v. Guttenberg Gebr. Borntraeger (Handbuch der Pflanzenanatomie, Berlin Bd. VIII, Teil 3) Price: DM 110.— 323 pp., 328 figs. This book is a part of the second, revised edition of the "Encyclopedia of plant anatomy", edited by V. Zimmerman and P. G. Ozenda. The book does not deal with embryology in the strict sense, but restricts itself to a description of the phenomena of primary histogenesis, mainly in the embryo (root, shoot and leaves), but also in the later plant axis and leaf of Angiosperms. The description of histogenesis automatically leads to the description of 278 organogenesis. However, throughout the book the stress lies on the former, and more particularly on its earlier phases. The book is richly illustrated, mainly with line drawings of histological sections. The book contains a bibliography of 11 pages, and is concluded by subject, taxonomic and author indexes. 'DEVELOPMENTAL GENETICS AND LETHAL FACTORS" 1961 by E. Hadorn Methuen & Cy. Ltd. (translated by U. Mittwoch) London 373 pp., 129 figs., 27 tabs. John Wiley & Sons, Inc. New York Price: 52 s. 6 d. This book is largely a direct translation of the German edition "Letal- faktoren in ihrer Bedeutung fur Erbpathologie und Genphysiologie", which appeared in 1955, and which was reviewed in the Supplement to the sixth issue of this periodical (1956, p. 18). The author states that it would have been impossible to incorporate all the literature which appeared since 1955, without rewriting the entire book. Never- theless, data from about 100 recent publications have been included in the English edition. The plan of the book has remained unaltered. The same holds for the illustrative material used. The price of the English edition is lower than that of the German one, while the presentation is also very good. "PHYSIOLOGY OF PREMATURITY" 1961 Editor: M. Kowlessar Josiah Macy, Jr. Foundation (Transactions of the 5th conference) New York 238 pp., 92 figs., 9 tabs. Price: $ 5.50 This report forms a sequel to the four reports announced in the three pre- ceding issues. It contains group discussions on uterine and parturition mecha- nisms, and on the prevention of prematurity and perinatal death. Participants: Allen (St. Louis, Mo.), Barron (New Haven, Conn.), Benirschke (Boston, Mass.), Caldeyro-Barcia (Montevideo), Clifford (Boston, Mass.), Csapo (New York), Douglas (New York), Gemzell (Stockholm), Hammond (Cambridge, England), Harper (Balti- more, Md.), Hendricks (Cleveland, Ohio), Kass (Boston, Mass.), Kowlessar (Brooklyn, N.Y.), Lanman (Brooklyn, N.Y.), Levine (New York), Noyes (Palo Alto, Cal.) , Osterlund (Helsinki), Parks (Washington, D.C.), Reid (Boston, Mass.), Reynolds (Chicago, 111.), Smith (Boston, Mass.), Villee (Boston, Mass.), Westin (Stockholm). "THE HATCHABILITY OF CHICKEN EGGS AS INFLUENCED BY ENVIRONMENT AND HEREDITY" 1961 by W. Landauer Univ. of Connecticut (Monograph nr. 1) Agr. Exp. Stat., Storrs, Conn. 278 pp., 56 figs., 75 tabs. The subject matter covered by this monograph is adequately indicated by its title. It is not necessary, therefore, to enumerate here the various chapters. The book is essentially a work of compilation. The amount of information gathered is reflected in the size of the bibliography, which covers 74 pages, that is, nearly 30 % of the book. 279 A special feature of the book is the extensive historical introductory chapter, which goes back to the third century B.C. Beside the illustrations, the book contains many tables and graphs. The bibliography serves at the same time as an author index. A subject index is not included. "ATLAS OF AVIAN HEMATOLOGY" 1961 by A. M. Lucas and C. Jamroz U.S. Govmnt. Printing Office (Agriculture Monograph no. 25) Washington, D.C. 277 pp., 48 coloured pis. Price: $ 4.00 (413 figs.) This atlas consists of a very large number of original coloured pictures of fixed and stained blood cells, accompanied by an extensive text. The atlas covers not only the adult chick blood, but also the blood of the embryo from 2 days onwards. It also includes the developmental stages of the blood cells found in the blood-forming organs of both the adult and the embryo. Further- more, the images and the text are concerned not only with typical cell types, but also with atypical and abnormal cells. More limited studies on 33 other avian species are added. The book contains extensive discussions on terminology and on hemato- logical techniques as applied to birds. There is a large bibliography and a very detailed subject index. "GLANDS OF INTERNAL SECRETION IN THE EMBRYONIC DEVELOPMENT OF BIRDS AND MAMMALS" 1959 by M. S. Mitskevich Israel Program for Scientific 314 pp., 63 figs. Translations (paper-bound) Jerusalem Price: $9.00 This is a translation of a book originally published in Russian in 1957. The author works in the A. N. Severtsov Institute of Animal Morphology of the Academy of Sciences of the U.S.S.R. in Moscow. The present book was reproduced by a photographical technique from a typewritten copy. It contains reproductions of the original figures. The book is primarily based on original investigations of the author and his co-workers, and of numerous other Russian investigators. These are supple- mented by data of a considerable number of non-Russian authors. The author's main pre-occupation is with the "neuralistic" views of Pavlov, according to which the central nervous system is the main "integrator" of the organism, and correlates the activities of all endocrine organs from the first beginning of their functional activity. The subjects treated in the chapters following the two introductory ones are: the thyroid gland, the hypophysis, thyroid-pituitary interrelations, the pancreas, neural regulation of endocrine activity, influence of maternal hormones in birds, and endocrine interrelations between mother and foetus. The bibliography covers 41 pages (17 for Russian authors, 24 for non- Russian references). A subject index is lacking. 280 "FUNDAMENTAL ASPECTS OF NORMAL AND MALIGNANT GROWTH" 1960 Editor: W. W. Nowinski Elsevier Publ. Cy. 1025 pp. 340 figs., 52 tabs. Amsterdam-London-New York-Princeton Price: H.fl. 110.— This large treatise is a collaborative effort of fourteen contributors. It is concerned with growth in its broadest sense, and, besides growth sensu stricto, extensively discusses such subject as germinal organization and embryonic induction, the biochemistry of differentiation, regeneration and wound healing, carcinogenesis, the metabolism of the cancer cell, mitotic poisoning by an- timetabolites, and the aging process. Further chapters deal with the roles of nucleic acids and nitrogen metabolism in growth, with growth in tissue culture, and with plant growth. The book opens with two introductory chapters, one on principles and theory of growth, and one dealing with intermediary metabolism of building blocks involved in growth. Associated with the latter chapter is a loose "map", printed in five colours, and summarizing the metabolic pathways along which chemical substances are utilized in cells. The text is supplemented with many figures. Each chapter is followed by a large bibliography. The book is concluded by an extensive subject index. The printing and binding of the book are very good. Contributors: Andrew (Indianapolis, Ind.), von Bertalanffy (Topeka, Kansas), Biesele (New York), Brachet (Bruxelles), Clark (Storrs, Conn.), Dalcq (Bruxelles), Griffin (Houston, Texas), Herrmann (Storrs, Conn.), Kirschbaum (Houston, Texas), Kit (Houston, Texas), Needham (Oxford, England), Thimann (Cambridge, Mass.), Washburn Jr. (Galveston, Texas), Waymouth (Bar Harbor, Maine) "MARSHALL'S PHYSIOLOGY OF REPRODUCTION" 3rd edition Vol. I, part I and II, 1960 Editor: A. S. Parkes Longmans, Green & Co. part I: 708 pp., 129 figs. London etc. part II: 897 pp.. 244 figs. Price: part I: 150 s. part II: 240 s. This standard work hardly needs to be reviewed extensively here. The only thing that calls for some comment is the complicated history of the third edition. The second edition dates from 1922. Of the third edition, edited again by A. S. Parkes, Volume II was the first volume to appear (1952). During the preparation of Volume I it became necessary to divide this into two parts. Part one appeared in 1956, and was reprinted in 1960. Part two appeared in 1960, but during its preparation it appeared necessary to split off the portion dealing with the endocrinology of mammalian reproduction. This portion will be published as Volume III in 1961. The division of the subject matter among the volumes is now as follows: Vol. I, part I: breeding season; morphology of the reproductive organs; cyclic changes in the female. Vol. I, part II: spermatogenesis and sperm; copulation and insemination; biology of spermatozoa; fertilization; reproductive endocrinology of lower vertebrates and birds; exteroceptive factors. Vol. II: cleavage, early development and implantation; placentation; physio- 281 logy of the placenta; foetal respiration and circulation; changes in the maternal organism; parturition; lactation; fertility; sex-determining factors; the life cycle. Vol. Ill: endocrinology of mammalian reproduction. "THE ORGANIZATION OF CELLS AND OTHER ORGANISMS" 1960 by L. Picken Clarendon Press 661 pp., 113 text-figs., 34 pis. Oxford Price: 84 s. As stated by the author, this book is a work of compilation. In the reviewer's opinion, however, it is much more than mere compilation. One of its most important features is no doubt that the author has tried, wherever possible, to illustrate the change and development of the concepts of cellular and macro- molecular biology against an historical background. The author provides ample justification for this trend of the book in his Introduction. The advantage of this kind of approach becomes evident in particular in the first chapter, which bears the same title as the book, and provides a modern and dynamic theoretical framework for the factual material to be presented in the following chapters. The most immediately evident quality of the book is that it brings together in one volume an amazing quantity of factual material, which up till now was only to be found widely scattered througout the literature of several different disciplines. This has, moreover, been done in such a way as to provide a well integrated body of knowledge, instead of a mere enumeration. Chapters II to IX deal successively with viruses, certain Schizomycetes (mainly bacteria), the nucleus, the cytoplasm, cytoplasmic particulates and membrane-systems, fibrillar cytoplasmic structure, the cell surface and cell membranes, and finally with extracellular materials and structures. Chapter X (64 pages) is of special interest to embryologists: it is entitled "Becoming multicellular as seen in the light of cell properties", and discusses such subjects as changes in adhesive properties during the life cycle, the surface coat of the amphibian egg, cleavage, gastrulation, the role of mucoproteins, cell affinity, etc. The bibliography covers 77 pages. References to papers written in English predominate. The author states that he has not aimed at completeness of the bibliography. It is sufficient, however, to enable the reader to find his way into the relevant literature. The bibliography serves at the same time as an author index. The work is carefully illustrated with line drawings and photographic plates. The majority of the text-figures were re-drawn. The book is concluded by an extensive subject index. "OOGENESIS; The storage of developmental information" 1961 by Chr. P. Raven Pergamon Press Ltd. (Vol. 10 of the International Series Oxford, London, New York, Paris of Monographs on Pure and Applied Price: 50 s. Biology, Div.: Zoology) 262 pp., 44 figs., 4 pis. This book represents a new approach to the problems of development and heredity. 282 The first chapter is called "Embryonic development as a communication problem", and points out the possibilities of applying the concepts of infor- mation theory to the problems of development. Then follow seven chapters which provide a synthesis of what is known to-day from a morphological as well as from a physiological point of view about the primary formation of animal egg cells, about the successive stages of oogenesis, and about the ripe unfertilized egg. The most recent data, obtained by means of cytochemistry, tracers and electron microscopy, are included. The egg nucleus, the egg cyto- plasm, the egg cortex and the auxiliary cells in the ovary are discussed separately. On the basis of the data supplied in the preceding chapters, chapter IX ("The storage of developmental information") provides estimates of the total amounts of information which may theoretically be stored respectively in the genome, the cytoplasm and the cortex of the egg. The last chapter is entitled "Information theory and biology", and is entirely theoretical in character. The greater part is taken up by a critical discussion of Elsasser's book "The physical foundation of biology" (1958). The chapter is concluded by a discussion of the problem of finality in the light of infor- mation theory. The book is adequately illustrated with good line drawings and some photographic plates. It contains a bibliography of 21 pages, a taxonomic index, and author and subject indexes. The book is well printed. "PHYSIOLOGY OF REPRODUCTION AND ARTIFICIAL INSEMINATION OF CATTLE" 1961 by G. W. Salisbury and W. H. Freeman & Cy. N. L. Van Demark San Francisco, Cal. 639 pp., 171 figs., 73 tbs. Price: $ 12.50 Although this book is directed primarily to agricultural and veterinary practitioners, it is considered of interest to our readers, since it contains a wealth of data on mammalian reproduction. One of the aims of the book is to bring together the most important literature of the past three decades, so that it will be very useful as a work of reference. Several chapters are of direct interest to mammalian embryologists. We will not enumerate them here, but only say that gametogenesis, ovulation and fertilization are treated rather extensively. The treatment of embryology proper is limited in scope, and is based partly on data obtained in other mammals. The number of references quoted at the end of each chapter is indeed considerable. Wherever possible review articles are quoted. The book is well illustrated and provided with a very detailed subject index. "OVUM HUMANUM, Wachstum, Reifung, Ernahrung, Befruchtung und friihe Entwicklung" 1960 by L. B. Shettles Urban & Schwarzenberg 87 pp., 64 figs., 1 coloured plate Miinchen - Berlin Price: DM 20.— The present book is a photograpic atlas of the development of the human egg prior to, and in the first week following ovulation. The majority of the 283 64 pictures are phase contrast photographs of living ova. The later stages were incubated in follicular fluid, or in serum to which pieces of tubal mucosa had been added. The atlas is divided into 5 sections, dealing respectively with growth, maturation, nutrition, fertilization and early development.lt is preceded by a short historical introduction by H. Speert, and concluded by an appendix containing some information on the techniques used, a bibliography of earlier publications of the author, and a curriculum vitae. Concise texts in German, French and English accompany the plates, forming a more or less continuous story. The reproduction and printing of the plates are very good. It is a pity that the technique used for making each picture could not have been separately indicated. Also one would have wished for more technical detail about the phase contrast procedure used, particularly as regards illumination. "THE BIOLOGY OF STENTOR" 1961 by V. Tartar Pergamon Press (International Series of Oxford, London, New York, Paris Monographs on Pure and Applied Price: 75 s. Biology, Zoology Division, Vol. 5) 413 pp., 99 figs., 1 coloured pi. This monograph is devoted entirely to one genus, the ciliate protozoan Stentor. So much information about this genus has accumulated in the course of more than a hundred years, that a compilation into one volume is fully justified. In the bibliography of this book there are more than 200 titles dealing with the genus Stentor alone. The author of the book has been engaged in experimental work on these organisms for a period of twenty years. Stentor is better suited for microsur- gical manipulations than any other unicellular organism, and with this book the author hopes to provide the basis for much more experimental work. Much of the experimental work compiled in this book deals with morphogenesis in its widest sense, and is therefore of direct interest to embryologists. The book includes a useful chapter on experimental techniques. A final chapter presents some theoretical considerations concerning, among other things, the interactions between nucleus, endoplasm and ectoplasm, and more particularly the autonomous pattern present in the latter. The book is richly illustrated with simple but clear line drawings. The bibliography is divided into a part dealing with Stentor, and a general part. There are author and subject indexes. The printing of the book is very good. "NEW APPROACHES IN CELL BIOLOGY" 1960 Editor: P. M. B. Walker Academic Press 216 pp., 58 figs., 3 tabs. London and New York This book contains the papers delivered at a symposium which formed part of the fifteenth International Congress of Zoology, held in London in 1958. At least six of the fourteen papers are of direct interest to embryologists. Among these are papers by Moore (nuclear transfer of embryonic cells), Waddington (ultramicroscopic structure of developing systems), and Clayton (labelled antibodies and differentiation). The papers generally range from about ten to about twenty pages. Some of 284 them only relate new findings, others are broader and more theoretical in scope, but in all of them the emphasis is on the applicability of comparatively new methods to the study of problems of cell biology in general. The subjects range from the morphological (5) to the biochemical (7) and the biophysical (2) level. Each paper is followed by a bibliography. The book is concluded by an author index and a very restricted subject index. Authors of papers: Barnard (London), Boss (Bristol), Buzzati-Traverso (Pavia, and La Jolla, Cal.), Callan (St. Andrews), Clayton (Edinburgh), Danielli (London), Hale (London), Hepborn (London), Leuchtenberger (Boston, Mass.), Lloyd (St. Andrews), Moore (New York), Stein (Cambridge), Taylor (London), Vincent (Syracuse, N.Y.), Waddington (Edinburgh) "CYTOLOGY AND EVOLUTION" 1960 by E. N. Willmer Academic Press 440 pp., 174 figs., 12 tabs. New York and London This book has been written from a synthetic point of view. It is not con- cerned primarily with the description of observed facts, but with their inter- pretation and integration within a generalized theoretical framework. There is no sense in enumerating the titles of the 19 chapters of the book. The author starts from the occurrence of three basic cell types, which are most evident in tissue culture studies, viz.: mechanocytes, epitheliocytes and amoebo- cytes. After a discussion of protozoan organisation in relation to the environ- ment, and of possible basic patterns for simple metazoan organisms (e.g. embryos), the three cell types ultimately serve as a basis for a hypothetical "genealogical tree" of the "families" of cells in the adult metazoan organism. The cell types and families are discussed extensively both from the structural and the physiological viewpoint. The achievement of physiological homoiostasis is recognized as a leading principle. It is further elaborated upon in discussions of the general principles of excretion, body-fluid regulation (also with regard to the demands of the germ cells), hormonal control, and, finally, retinal differentiation. The concluding chapter is called "The concept of evolutionary cytology", and points the way to possibilities of future research in cellular physiology. The book is liberally illustrated with drawings and photomicrographs. Each chapter is followed by a bibliography. The work is rounded off by subject and author indexes. This is a book not for students, but for advanced zoologists. Among other specialists, embryologists will find in it much that is original and thought-provoking, both from the structural and the functional (physiological) point of view. "THE GENESIS OF THE MOUSE SKELETON: A Laboratory Atlas" 1960 by Z. T. Wirtschafter Charles C. Thomas 182 pp., 147 pis. Springfield, 111. Price: $11.75 This photographic atlas is concerned with ossification in the mouse embryo from 14 days after conception. It contains 147 plates wich were made from 285 alizarin-stained, cleared, whole or partially dissected embryos of the C3H albino strain. The stages shown are at intervals of 1 day, from 14 to 38 days. The skull and neck region, and the extremities are treated separately at higher magnifications. In each stage only those ossification centres are specifically indicated which appear for the first time. The atlas provides a dynamic and integrated picture of the progress of ossification. A notable feature is the attention paid to sex-differences in later stages. The atlas as such is preceded by a tabular survey of the chronology of ossification, in which the centres are arranged alphabetically. A separate table is devoted to the chronology of the sesamoid bones. The book is concluded by tabular surveys of day-by-day mean body weights and weight ranges of C3H embryos from 14 tot 40 days. "SYMPOSIUM ON MAMMALIAN GENETICS AND REPRODUCTION" 1960 Edited by: Biology Division, The Wistar Inst, of Anat. and Biol. Oak Ridge National Laboratory Philadelphia 193 pp., 34 figs., 42 tabs. This Supplement to vol. 56 of the "Journal of Cellular and Comparative Physiology" contains the papers and open discussions of a Symposium held in Gatlinburg, Tenn., in April 1960, under the sponsorship of the Biology Divi- sion of the Oak Ridge National Laboratory. The participants to the Sympo- sium were almost exclusively American and English. There are 12 papers, more than half of which are of special significance to mammalian embryol- ogists. Among the subjects treated are: triploidy, morphology and function of gametes, embryonic gametogenesis, general developmental genetics, and phe- nogenetics of hair and pigment mutants. The volume contains a name index. Authors of papers: Austin (London), Braden (Prospect, Austr.). Brauch-Russell (Oak Ridge, Tenn.), Chase (Providence, R.I.), Falconer (Edinburgh), Gluecksohn-Waelsch (New York), Griffen (Bar Harbor, Maine), Gruneberg (London), Hollander (Ames, Iowa), Mann (Pro- vidence, R.I.), Mintz (Chicago, 111.), Owen (Pasadena, Calif.), Russell (Oak Ridge, Tenn.), Wright (Madison, Wis.) 286 WH lBb3 R