GENERAL EMBRYOLOGICAL INFORMATION SERVICE Marine Biofo'^i'^nl Lahoratory APR 2 11970 mUDS HOLE. MASS. VOLUME 13 data collected during 1969 Utrecht - Netherlands GENERAL EMBRYOLOGICAL INFORMATION SERVICE Issued by the Hubrecht Laboratory on behalf of the General Embryological Information Service Foundation VOLUME 13 data collected during 1969 Utrecht - Netherlands Edited by Prof. P. D. Nieuwkoop, Director of the Hubrecht Laboratory Managing Editors: Dr. J. Faber B. Z. Salome Hubrecht Laboratory Uppsalalaan 1 Universiteitscentrum 'De Uithof UTRECHT, Netherlands Printed in the Netherlands, 1970 CONTENTS Introduction p. 5 Directory of Names and Addresses, with subjects of research (alphabetical order) p. 7 Directory of Institutes, with members engaged in developmental biology (geographical order) p. 193 Africa p. 193 N. America Canada p. 194 United States p. 195 Centr. America p. 207 S. America p. 207 Asia p. 208 Australia Australia p. 213 New Zealand p. 213 Europe p. 213 Subject Index (alphabetical order) p. 233 Communications from the Hubrecht Laboratory p. 303 Communications of the "International Society of Developmental Biologists" p. 304 Book notices p. 309 INTRODUCTION In this volume the organization of the various sections has remained unaltered. The cover and title page have been changed in conformity with current biblio- graphical practice. We continue our efforts to expand the coverage of the Service. New countries listed are Ireland, Jamaica, and Zambia. As a further example we may mention that the amount of information listed with regard to the developmental biology of unicellular organisms and plants (including slime molds) has increased by nearly 50 %. The number of book notices has again increased considerably. Information concerning the Hubrecht Laboratory may be found on page For information regarding the "International Society o[ Developmental BiO' legists" (formerly I.I.E.), including the latest membership list, see page P. D. NIEUWKOOP T. FABER B. Z. SALOME DIRECTORY OF NAMES AND ADDRESSES with Subjects of Research (alphabetical order) • = Members of the "International Society of Developmental Biologists" (formerly I.I.E.) AARON, C. Dr.en Med. — Lab. d'Anat., Fac. de Med., 45 Rue des Sts. Peres, 75 PARIS Vie, France ABBOTT, Miss U. Ph.D., Prof. — Developm. Biol. Program, Natl. Sci. Found., WAS- HINGTON, D.C. 20550, U.S.A. • ABELOOS, M. Prof. — Lab. de Biol. Gener., Fac. des Sci., Place Victor Hugo, MAR- SEILLE, France ABERCROMBIE, M. Prof. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONDON W.C.I. England • a Study of cell relations in tissue culture. Gallus gallus (Aves), Mas musculas (Rodenfia) (in collaboration with Mrs. J. E. M. HEAYSMAN (WAKELING) and Mrs. S. M. PEGRUM (HALL)) ABRAMOVICI, A. Dr. es Sci. — Dept. of Embryol. and Teratol., Med. School, Tel-Aviv Univ., TEL-AVIV, Israel a Fat-soluble vitamins and their inhibitors causing abnormal development of the embryo. Gallus gallus (Aves) b Developmental physiology and physiopathology of extraembryonic fluids and plasma. Gallus gallus (Aves) ABRO, A. — Inst, of Anat., Univ. of Bergen, BERGEN, Aarstadvollen, Norway a Embryology of the testis. Socex spec, Neomys spec. (Insectivora) ABU-SINNA, G. M. E. B.Sc. — Dept. of Zool., Fac. of Sci., Ain Shams Univ., Abassia, CAIRO, Egypt ACHAZI, R. K. Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. a Study of enzyme activity (tyrosinase) during Wolffian lens regeneration. Triturus viri- descens (Urodela) ACHTELIG, M. Dr. — Zool. Inst, der Univ., Rontgenring 10, 87 WORZBURG, W. Germany a Studies on the importance of the oosome for the early embryology of Pimpla tudonellae (Ichneumonidae, Hymenoptera) ACHTELIK, W. Ph.D. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE, 8. Poland a Histochemical studies in regeneration and differentiation of embryonal tissues under the influence of hormones and antimetabolites. Gallus domesticus (Aves). Mus musculus (Ro- dentia) ACKERMAN. G. A. M.D., Ph.D., Prof. — Dept. of Anat., Ohio State Univ., 1645 Neil Ave.. COLOMBUS, Ohio 43210, U.S.A. a Morphology and histochemistry of the hemopoietic system in embryonic and adult con- dition. Gallus domesticus (Aves), Homo sapiens and other spp. (Mammalia) ACTON. A. B. D.Phil. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C.. Canada a Electron microscope study of the developing male accessory glands. Drosophila melano- gaster (Diptera) ADACHI, H. M.Sc. — Lab. of Embryol.. Fac. of Sci., Osaka City Univ.. Sugimoto-cho. Sumiyoshi-ku, OSAKA, Japan a Studies on the species-specific antigenicities of the cell membrane. Mus musculus (Rodentia) h Immunological analysis of the structural molecules of the erythrocyte membrane. Mus mus- culus (Rodenfia) ADAMS. T. Ph.D. — USDA Metab. & Radiat. Research Lab.. State Univ. Station, FARGO, 307 Huntingdon Rd.. CAMBRIDGE. England a Development of ova (preimplantation stages) with special reference to the maternal environ- ment using the egg transfer technique. Oryctolagus cuniculus (Lagomorpha) b Sperm transport and quantitative aspects of fertilization. Oryctolagus cuniculus (Lago- morpha) ADAMS, T. . Ph.D. — USDA Metab. & Radiat. Research Lab.. State Univ. Station, FARGO, N.D. 58103. U.S.A. a Endocrine regulation of ovary maturation. Musca domestica (Diptera) b Use of endocrines to disrupt morphogenesis. Musca domestica (Diptera) ADAMS SMITH, W N. D.Phil., Prof. — Dept. of Anat., Med. Coll. of South Carolina, 80 Barre St., CHARLESTON, S.C. 29401. U.S.A. a Teratogenic influences of a variety of known teratogens upon heart development. Rattus nocvegicus (Rodenfia) h Influence of sex hormones upon the sexual maturation of the developing brain. Rattus norvegicus (Rodentia) ADAMSTONE, F. B. Ph.D.. Prof. (Emer.) — Dept. of Zool.. Univ. of Illinois, URBANA, 111. 61801, U.S.A. ADELMANN, H B. Dr., Prof. (Emer.) — Div. of Biol. Sci.. Cornell Univ., Stimson Hall, ITHACA. N.Y. 14850, U.S.A. • ADINOLFI, M. M.D., Ph.D. — Paediat. Research Unit. Guy's Hosp. Med. School. LONDON S.E.I, England a Studies on the ontogenesis of components of complement and lysozyme, using in vitro cultures of foetal tissues and analysis of the newly synthesized proteins by means of autoradiography of immunoelectrophoretic plates. Homo sapiens (Primates) h The development of the histocompatibility antigens during life in u t e r o, using extracts from foetal tissues and the inhibition of cytotoxic antibodies. Homo sapiens (Primates) ADLER. R. M.D. — Inst, de Anat. Gen. y Embriol., Fac. de Med., Paraguay 2155, BUENOS AIRES, Argentina — temporarily: Hubrecht Lab. (Intern. Embryol. Inst.), Uppsalalaan 1, Universiteits- centrum „De Uithof", UTRECHT, Netherlands a Experimental neuroembryology. Gallus domesticus (Aves) b Electron microscopy of developing nervous system. Gallus domesticus (Aves) c Dis- and reaggregation studies of neural tube development. Gallus domesticus (Aves) AESCHLIMANN. A. Dr.phil.II — Schweiz. Tropeninst.. Socinstr. 57, 4000 BASEL. Swit- zerland a Spermatogenese, Ovogenese. Embryonalentwicklung und Endocrinologie. (Ixodoidea. Aca- rina, Arachnoidea) (in collaboration with R. GEIGY) b Uebertragung von Spirochaetosen iiber das miitterliche Ovarium auf die Embryonen und damit auf die Nachkommen der nachsten Generation. (Argasidae, Acarina, Arachnoidea) (in collaboration with R. GEIGY) AFONYA, I. I. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria AFZELIUS, B. A. Fil.Dr. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCK- HOLM. Sweden • a Fine structure of germ cells. (Invertebrata; Vertebrata) AGARWAL, L. P. Prof. — Dr. Rajendra Prasad Center for Ophthalm. Sci.. All India Inst. of Med. Sci.. NEW DELHM6. India a Lens regeneration after intracapsular and extracapsular lens extraction, with and without implantation of embryonal ocular tissue. Oryctolagus cuniculus (Lagomorpha), Macacus rhesus (Primates) (in collaboration with S. K. ANGRA) b Lens regeneration after extracapsular lens extraction and implantation with 20-methyl cholanthrene. Oryctolagus cuniculus (Lagomorpha), Macacus rhesus (Primates) (in col- laboration with S. K. ANGRA) c Ocular embryonal tissue implants in the anterior chamber of the eye. Oryctolagus cuniculus (Lagomorpha) (in collaboration with S. K. ANGRA) d Biochemical assay of regenerates (amino acids and RNA, DNA). Oryctolagus cuniculus (Lagomorpha), Macacus rhesus (Primates) (in collaboration with S. K. ANGRA) e Regeneration of iris after iridectomies. Oryctolagus cuniculus (Lagomorpha), Macacus rhesus (Primates) (in collaboration with S. K. ANGRA) AGARWAL. Mrs. P. M.S. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India a Differentiation of Remak's ganglion. Gallus domesticus (Aves) AGERBAK. Miss G. S. B.Sc. — Microbial Genet. Research Unit, Hammersmith Hosp.. LONDON W.12, England AGRELL, I. P. S. Fil.Dr., Prof. — Zoophysiol. Inst., Univ. of Lund, Helgonavagen 3. 223 62 LUND, Sweden • a Polyamines in developing larvae. Calliphora spec. (Dipteca) AISENSTADT, T. B. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during maturation. (Acipenseridae, Chondrostei; Amphibia) (in collaboration with Mrs. T. A. DETTLAFF) AKESSON, B. Fil.dr. — Zootom. Dept., Zool. Inst., Univ. of Lund, Helgonavagen 3, S-223 62 LUND, Sweden AKETA. K. D.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ.. Chikusa-ku, NAGOYA. Japan • AKHABADZE, L. V. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R.. Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Regeneration of myocardium. Rattus norvegicus, Canis familiaris, Felis domestica, Oryc- tolagus cuniculus (Mammalia) ALBANESE (CARMIGNANI). Mrs. M. P. — 1st. di Zool. e di Anat. Comp.. Fac. di Sci.. Univ. di Messina, Via dei Verdi 75. 98100 MESSINA. Italy a The behaviour of the nucleolar apparatus of oocytes in the growing phase in relation to that of the yolk globules. Coris julis (Labridae, Teleostei) b The formation of the yolk globules; the aspects of the yolk globules in relation to the vitelline membrane and to the nucleolus Antedon rosacea (Crinoidea) ALBERGHINA (TONINI), Mrs. F. D.Sc. — 1st. di Genet.. Univ. di Milano, Via Celoria 10, 20133 MILANO, Italy a Development and cytology of cultured cells. Drosophila melanogaster (Diptera) ALBERT. J. Dr. en Biol.Anim. — Lab. de Biol. Anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation. 33 TALENCE, France a Morphogenese de I'appareil digestif. (Anura) b Developpement des glandes digestives. (Anura) c Ultrastructure des cellules du tube digestif chez I'embryo et la lai-ve. (Anura) d Endoderme et derives. Rana dalmatina, Bufo bufo (Anura) ALBRIGHT. J. F. Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE. Tenn. 37830, U.S.A. a Ontogeny of the immune system. Gallus gallus (Aves). Mus musculus [Rodentia) (in collaboration with T. MAKINODAN) b Differentiation of erythrocytic system during ontogeny. Gallus gallus (Aves), Mus mus- culus (Rodentia) r t^t a r»/->r t ALESCIO. T. M.D. — 1st. di Anat. Topogr., Univ. di Napoli, Via L. Armanni 5. NAPOLl, Italy ALEXANDER, G. D.Agr.Sc. — Div. of Anim. Physiol., C.S.I.R.O., Ian Clunies Ross Anim. Res. Lab., Great Western Highway, (P.O.Box 144, Parramatta), PROSPECT. N.S.W. 2150, Australia a Investigations of the physical and physiological relations between maternal and embryonic tissues. Ovis spec. (Artiodactyla) r^nr, o ALEXANDRE, J.-H. — Lab. d'Anat.. Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, ALEXANDRU (HORVAT), Mrs. C. Dr.med. — Centrul de Embriol. Norm. 5i Patol.. Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Experimental teratology of the central nervous system. Gallus domesticus (Aves) ALLEAUME (BORDES), Mrs. N. Dr.Biol.anim. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Recherches experimentales sur la determination des caracteres larvaires et imaginaux. Calli- phora spec, Drosophila spec. (Diptera) rr-rr-c ALLEN. E. R. — Dept. of Anat. and Cell Biol., School of Med., Univ. of Pittsburgh, PITTS- BURGH, Pa. 15213, U.S.A. a Fibrillogenesis of native collagen in the embryo. Sus sctofa (Artiodactyla) b Immunochemical studies of actin and myosin synthesis in somites. Gallus domesticus (Aves) c Morphological (ultrastructural) organization of contractile protein in myogenic tissue into functional sarcomeres. Gallus domesticus (Aves), Sus scrofa (Artiodactyla) d Control of ribosomal synthesis in oocytes. Acheta domesticus (Orthoptera) ALLEN, Miss M. J. f Ph.D., Prof. — Dept. of Biol., Wilson Coll., CHAMBERSBURG, Pa., U.S.A. (deceased) xtoamv ALLEN, R. D. Ph.D. — Dept. of Biol. Sci., State Univ. of New York at Albany, ALBANY. N.Y. 12203, U.S.A. • a Investigations of cell division and motility of unicellular organisms and of tissue cells in vivo and in vitro. (Sarcodina, Protista: Metazoa) ALLISON, J. E. Ph.D.. Prof. — Dept. of Anat.. Med. School, Univ. of Oklahoma, 801 NE 13th St., OKLAHOMA-City, Okla. 73104. U.S.A. a Studies on the genital and urinary anomalies with emphasis on hermaphroditic alterations. Raftus rattus (Rodentia) ALLISTON, C W. Ph.D., Prof. — Herrick Labs., Dept. of Anim. Sci., School of Agric, Purdue Univ., LAFAYETTE. Ind. 47907, U.S.A. a In vitro culture temperatures and subsequent viability of ova. Oryctolagus cuniculus (Lagomorpha) ^ ALTMAN, J. Prof. — Dept. of Biol. Sci., Purdue Univ., LAFAYETTE. Ind. 47907, U.S.A. a Development of the brain a-ntat^a ALVAREZ, L. Med.Dr. — Inst. F. Oloriz, Fac. of Med.. Univ. of Granada. GRANADA. Spain ALVES, M. A. R. Dr.phil. — Dept. of Biol., Fac. Filos. Cienc. e Let. de Ribeirao Preto U.S.P., Caixa Postal 759. RIBEIRAO PRfiTO. S.P., Brazil a Oogenesis. Bradysia spec. (Diptera) AMADO, P. O. M.D. — Inst, de Histol. e Embriol.. Fac. de Med., Av. Prof. Egas Moniz, LISBOA 4, Portugal a Cytology, histochemistry and organotypical culture of the mesonephros. Gallus domesticus (Aves) AMANO, H. D.Sc. Prof. — Biol. Lab., Doshisha Univ., Kamikyo-ku, Karasuma Imadegawa, KYOTO, Japan, a Developmental mechanism of the heart. Triturus pyrrhogaster (Urodela) b Developmental mechanism of the limb. Triturus pyrrhogaster (Urodela) AMANUMA, A. D.Sc. — Lab. of Embryol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Suraiyoshi-ku, OSAKA, Japan a Experimental analysis of gonadal differentiation. Gallus domesticus (Aves) h Sex chromatin in embryonic tissues. Mus musculus (Rodentia) AMONS, F. M.Sc. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AM- STERDAM-O., Netherlands a Development of pineal gland. Gallus domesticus (Aves) b Influence of heavy metals on lymphosarcoma cell prohferation and behaviour in tissue culture. Mus musculus (Rodentia) c Pineal body in tissue culture. Gallus domesticus (Aves) AMOROSO, E. C. F.R.S.. Prof. — Dept. of Physiol., Royal Vet. Coll., Univ. of London, Royal College St., LONDON N.W.I, England • AMPRINO, R. M. M.D., Prof. — Inst, of Human Anat., Fac. of Med., Univ. of Bari, Poli- clinico, 70124 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) AMY, R. L. Ph.D., Prof. — Dept. of Biol.. Southwestern at Memphis, MEMPHIS, Tenn. 38112, U.S.A. a Ultraviolet microbeam studies on the developing embryo. Habrobcacon juglandis (= Bracon hebetor) (Hymenoptera) b Analysis of radiation-induced embryonic death. Habrobracon juglandis (= Bracon hebetor) (Hymenoptera ) ANAND KUMAR, T. C. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston, BIRMINGHAM 15, England a Oogenesis. ( Lemuroidea, Primates) ANDERSEN, H. A. Ph.D. — Biol. Inst, of the Carlsberg Found., Tagensvej 16, 2200 COPENHAGEN N., Denmark a Replication of DNA after synchronization of the cell division with heat shocks. Tetra- hymena pyriformis (Ciliata) ANDERSEN, O. F. B.A. — Physiol. Dept., Merck Inst, for Therap. Research, RAHWAY. N.J. 07065, U.S.A. a Studies on the sperm acrosome reaction in relation to fertilization. Mesocricetus auratus (Rodentia) ANDERSON, D. T. D.Sc. — School of Biol. Sci., Zool. Bldg., Univ. of Sydney, N.S.W. 2006, Australia a Embryology. Leptograpsus variegatus (Brachyura, Crustacea) ANDERSON, E. M. Prof. — Dept. of Zool., Univ. of Massachusetts, AMHERST, Mass. 01002, U.S.A. • ANDERSON. J. E. M.D., Prof. — Dept of Anat., Fac. of Med., McMaster Univ.. HAMIL- TON, Ont., Canada a Post-natal growth and development of bone. Homo sapiens (Primates) ANDERSON, J. M. Ph.D., Prof. — Div. of Biol. Sci., Cornell Univ., ITHACA, N.Y. 14850, U.S.A. ANDERSON. J. W. Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON, Wis. 53706, U.S.A. a Comparative histophysiology of placenta and fetal membranes, especially protein transfer. Geomys bursarius, Rattus norvegicus (Rodentia), Eptesicus fuscus, Noctilio labialis (Chir- optera), Canis [amiliaris (Carnivora) b Development of brain proteins. c Perinatal transfer of antibodies via placenta, fetal membranes, mammary gland, gut. Rattus norvegicus (Rodentia) d Electrophoresis of fetal and maternal sera. Canis familiaris (Carnivora), Castor canadensis (Rodentia), Odocoileus virginiana (Artiodactyla) ANDERSON, M. J. B.A. — Leland Stanford Jr. Univ., STANFORD, Calif. 94305, U.S.A. a Microtubules during early cleavage: 1. assay of level of microtubular protein (tracer study). 2. are microtubules (i.e. spindles) synthesized or assembled? Strong ylocentrotus purpuratus (Echinoidea), Urechis caupo (Echiuroidea) ANDERSON, P. N. M.D. — Lab. of Biol., Natl. Cane. Inst., Natl. Inst, of Health, Bldg. 8. Rm B-18, BETHESDA, Md. 20014, U.S.A. a Radioautographic analysis of DNA synthetic cycle during embryonic development of the ocular lens. Gallus domesticus (Aves) 10 b Immunochemical and histochemical analysis of plasma cell and immunoglobulin differen- tiation; in vitro induction of plasma cell immunoglobulin synthesis. Mus musculus (Rodentia) ANDERSSON, T. Fil.mag. — Zool. Inst.. Univ. of Gothenburg, 4de LSnggatan 7B, GOTE- BORG SV. Sweden ANDRES, G. Dr. — Zool. Inst, der Johannes Gutenberg Univ., Saarstr. 21, MAINZ, W.Germany • ANDREW, Miss A. Ph.D. — Dept. of Anat., Med. School, Univ. of the Witwatersrand, Hospital St.. JOHANNESBURG, S.Africa a Origin of enteric ganglia. Gallus domesticus (Aves) b Autoradiographic study of the relation between histones and RNA synthesis in cultured neural crest cells. Xenopus laevis (Anura) (in collaboration with Mrs. V. GABIE, Dept. of 2^ol.) ANGRA, S. K. M.S. — Dr. Rajendra Prasad Center for Ophthalm. Sci., All India Inst, of Med. Sci., NEW DELHM6, India a Lens regeneration after intracapsular and extracapsular lens extraction, with and without implantation of embryonal ocular tissue. Oryctolagus cuniculus (Lagomorpha). Macacus rhesus (Primates) (in collaboration with L. P. AGARWAL) b Lens regeneration after extracapsular lens extraction and implantation with 20-methyl cholanthrene. Oryctolagus cuniculus (Lagomorpha). Macacus rhesus (Primates) (in collaboration with L. P. AGARWAL) c Ocular embryonal tissue implants in the anterior chamber of the eye. Oryctolagus cuniculus (Lagomorpha) (in collaboration with L. P. AGARWAL) d Biochemical assay of regenerates (amino acids and RNA, DNA). Oryctolagus cuniculus (Lagomorpha). Macacus rhesus (Primates) (in collaboration with L. P. AGARWAL) e Regeneration of iris after iridectomies. Oryctolagus cuniculus (Lagomorpha), Macacus rhesus (Primates) (in collaboration with L. P. AGARWAL) ANTEUNIS, Miss A. H. J. D.Sc. — Lab. of Anat., Fac. of Med., Univ. of Gent, Lede- ganckstr. 35, GENT, Belgium ANTON, H. J. Dr.phil.. Doz. — Zool. Inst, der Univ., Weyertal 1 19, 5 KOLN-Lindenthal, W.Germany a Proteinstoffwechsel bei Regenerationsprozessen. (Amphibia) AOTO, T. D.Sc, Prof. — Zool. Inst.. Fac. of Sci., Hokkaido Univ., North 10. West 8, SAPPORO. (060) Japan a Morphological and physiological studies on neurosecretion. (Crustacea; Pisces; Amphibia) h Sex differentiation and gonadal development. (Amphibia) c Regeneration and cytodifferentiation. Hydra magnipapillata (Hydroidea), Xenopus laevis (Anura) d Morphogenesis of the nauplius-eye. Palaemon paucidens (Decapoda, Crustacea) e Morphogenesis of the pineal organ. Xenopus laevis (Anura) APEKIN, V. S. — Azov-Black Sea Research Inst, of Marine Fishery Management and Oceanogr., KERCH, Crimean region, U.S.S.R. a Immunological study of maturation processes in oocytes, and of early embryogenesis. Acipenser stellatus, A. giildenstadti colchicus (Chondrostei) b Experimental and immunological study of maturation processes. Gobius melanosfomus. G. bafrachocephalus (Teleostei) ARCAN (STELEA), Mrs. A. Dr.med. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a The influence of cytostatics on embryonic and foetal development. Gallus domesticus (Aves) b The dependence of prenatal morphogenesis on the integrity of the spinal cord. Gallus domesticus (Aves) ARGYRIS (FRANKENHUIS), Mrs. B. Ph.D., Prof. — Dept. Urol., Upstate Med. Center. State Univ. of New York. SYRACUSE, N.Y. 13210, U.S.A. a Maturation of immunological capacity; comparative study. 1. Immunological tolerance. 2. Role of a macrophages in antibody synthesis and immunological maturation. Mus musculus (Rodentia) ARGYRIS, Th. S. Ph.D., Prof. — Dept. of Zool., Syracuse Univ., 130 College Place, SYRACUSE. N.Y. 13210, U.S.A. a Regeneration and the control of growth of adult organs. 1. Mechanism of hair growth stimulation in wound healing. 2. Mechanism of cellular proliferation produced by damage in adult liver and kidney. (Mammalia) b Functional hypertrophy and the control of growth of adult organs. 1 . Mechanism of kidney growth following unilateral nephrectomy. 2. Role of plasma proteins in liver growth. (Mammalia) c Stimulation of adult organs and tissues by tumors; growth promoting effects of Ehrlich ascites tumor, S-180, on skin, mammary gland, liver and kidney. (Mammalia) d Induction of drug metabolizing enzymes and liver growth by phenobarbital and 3-methyl- cholanthrene. Mus musculus, Raftus norvegicus (Rodentia) 11 ARIfiNS KAPPERS, J. M.D.. Prof. — The Netherlands Central Inst, for Brain Research. IJdijk 28. AMSTERDAM-O., Netherlands • ARIMA. Sh. D.Agr., Prof. — Lab. of Anim. Morphol., Biol. Inst., Fac. of Sci., Nara Women's Univ., Kitauoya-Nishi-machi, NARA, Japan a Studies on the end-products of metabolism in the embryo and the tadpole. Rhacophorus schlegelii var. arborea (Anuca) b Effects of mammalian prolactin on the growth and the nitrogenous excretion of tadpoles. Rhacophorus schlegelii var. arborea (Anura) ARMS, Miss K. Ph.D. — Dept. of Biol. Sci., Stanford Univ.. STANFORD. Calif. 94305. U.S.A. ARMSTRONG. P. B. M.D., Prof. — Dept. of Anat.. School of Med.. State Univ. of New York, 766 Irving Ave., SYRACUSE. N.Y. 13210, U.S.A. a Behavioral responses in developing embryos. Amiurus nebulosus (Teleostei), Amby stoma punctatum (Urodela) ARMSTRONG, Miss R. C. Ph.D. — Dept. of Anat.. School of Med.. Univ. of California. SAN FRANCISCO. Cahf. 94122. U.S.A. a Early development of the mammary gland with special reference to tissue interaction and DNA synthesis using culture methods and H^ thymidine labeling. Mus musculus (Rodentia) b Lens development, with special reference to cell division and lens fibre differentiation. Rattus rattus (Rodentia) ARNAULD. Miss E. L. Dr.Biol.Anim. — Lab. de Biol. Anim.. Fac. des Sci. de Bordeaux. 351 Cours de la Liberation. 33 TALENCE. France a Etude experimental du developpement du mesonephros. Rana spec. Discoglossus spec. Bufo spec. (Anuca) h Etude experimentale de la metamorphose du rein. Rana spec. Discoglossus spec. Bufo spec. (Anura) ARNDT. E. A. Dr.rer.nat.. Prof. — Zool. Inst, der Univ., Abt. Meeresbiol., Universitats- platz 2, ROSTOCK. East.Germany ARNOLD, J. M. Ph.D.. Prof. — Pacific Biomed. Research Centre. Univ. of Hawaii. 2538 The Mall. HONOLULU. Hawaii 96822. U.S.A. a Studies on the egg cortex (histochemical techniques, electron microscopy and centrif- ugation). Loligo pealii (Decapoda) , Octopus spec. (Octopoda, Mollusca) h Studies on the developmental fine structure of the eye-lens. Loligo pealii (Decapoda), Octopus spec. (Octopoda, Mollusca) c Studies on the formation of the blastoderm and cleavage. (Cephalopoda, Mollusca) ARNOLD. Miss J. M. M.Sc — Zool. Dept.. Univ. of W.Austraha. NEDLANDS. W. Australia 6009. Australia a Development of homeostatic mechanisms associated with respiration and energy metabolism. Dasyurus geoffroyi (Marsupialia) ARNOLDS. W. J. A. M.Sc. — Zool. Lab.. State Univ. of Utrecht. Janskerkhof 3, UTRECHT. Netherlands a Investigation of albumen uptake in embryos by means of immunofluore.scent tracing of albumen proteins. Limnaea stagnalis (Gastropoda) ARORA. H. L. Ph.D. — address unknown • ARRU. Miss A. Dr. — 1st. di Zool.. Fac. di S.M.F.N.. Univ. di Sassari, Via Murroni 25. 07100 SASSARI. Italy a Gonadogenesis. Crenilabrus spec. (Labridae), Syngnathus spec. (Syngnathiformes. Teleostei) ARTHUR. Miss E. M.Sc — School of Biol. Sci., Univ. of East Anglia. Wilberforce Rd.. NORWICH. NOR 88C, England a Neoplasms particularly lymphosarcomas. Xcnopus laevis (Anuca) b Control of cell division. Xenopus laevis (Anuca) ASAKURA. K. — Biol. Inst.. Fac of Sci.. Univ. of Kanazawa. Marunouchi-1, KANAZAWA. Japan a Development and regeneration of scales. Oryzias latipes, Cacassius aucatus and other spp. (Teleostei) ASAMI. K. Ph.D. — Div. of Biol.. Natl. Inst, of Radiol. Sci.. Anagawa 4-9-1. CHIBA. (280) Japan a Biochemical research on the hormonal control of placental growth. Rattus norvegicus (Rodentia) b Changes in egg energy metabolism at fertilization. Anthocidaris crassipina, Hemicentrotus pulcheccimus (Echinoidea) ASAYAMA. S. Prof. — Lab. of Embryol.. Fac. of Sci., Osaka City Univ.. Sugimoto-cho. Sumiyoshi-ku. OSAKA. Japan a Study on gonad differentiation. Homo sapiens (Pcimates) h Experimental analysis of gonadal sex. Callus domesticus (Aves) ASHBY. K. R. Ph.D. — Dept. of Zool.. Univ. of Durham. South Rd.. DURHAM. England a The development of the reproductive system, and the modifications induced by treatment with steroid hormones during the course of sexual differentiation. Salmo icideus, S. tcutta (Teleostei) 12 ASHHURST, Miss D. E. D.Phil. — Dept. of Anat., Med. School, Univ. of Birmingham. Edgbaston, BIRMINGHAM 15. England a Development of connective tissue in the pupa: site of polymerization of collagen molecules (using labelled proline). Galleria mellonella (Lepidopteca) ASHLEY, G. T. M.D. — Dcpt. of Anat., Univ. of Manchester, MANCHESTER 13, England ASLING, C. W. M.D., Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of California, SAN FRANCISCO, Calif. 94122, U.S.A. a Development of face and palate, and congenital defects resulting from maternal pteroyl- glutamic acid deficiency. Rattus spec. (Rodentia) b Development of inner ear, and congenital defects resulting from maternal manganese deficiency. Rattus spec. (Rodentia) c Autoradiographic studies on abnormal development in the embryo, with special reference to the neural tube. Rattus spec. (Rodentia) ASNANI, Miss M. M.Sc. — Dept. of Zool., Fac. of Sci., Univ. of Baroda, BARODA-2, India a Liver, spleen and lymph gland regeneration. (Reptilia; Aves) ASSENMACHER, I. A. Dr.Med., Dr. Sci., Prof. — Lab. de Physiol. Anim., Fac. des Sci., Univ. de Montpellier, Place Eugene Bataillon, 34 MONTPELLIER. France ASTAHOVA (DJAKONOVA), Mrs. I. N. — Dept. of Embryol., Fac. of Biol., Moscow Univ.. MOSCOW V-234, U.S.S.R. ASTAUROV, B. L. Dr.biol.sci., Prof. — Inst, of Devclopm. Biol., Acad, of Sci. of the U.S.S.R., Vavilow St. 26, MOSCOW B-133, U.S.S.R. • a Artificial parthenogenesis and experimental polyploidy. Bombyx mori (Lepidoptera) h Induction of amphidiploidy in interspecific hybrids. Bombyx mori, B. mandarina (Le- pidoptera) (in collaboration with Miss V. N. VEREISKAYA). c Genetic control of egg cell reactivity to the stimuli activating artificial parthenogenesis. Bombyx mori (Lepidoptera) AUCLAIR. W. Ph.D., Prof. — Dept. of Biol., Rensselaer Polytechn. Inst., TROY, N.Y. 12181. U.S.A. a Macromolecular protein synthesis and associated morphogenesis of cilia during the blastula stage. Arbacia punctulata. Strong ylocentrotus purpuratus (Echinoidea) , Chaetoptenis pergamentaceus (Annelida) h Macromolecular synthesis during regeneration of cilia in gastrulae. Arbacia punctulata. Strong ylocentrotus purpuratus (Echinoidea), Chaetoptenis pergamentaceus (Annelida) AUERBACH, R. Ph.D. — Dept. of Zool., Univ. of Wisconsin, 1117 West Johnson St.. MADISON, Wis. 53706. U.S.A. AUERSPERG, N. M.D., Ph.D., Prof. — Dept. of Zool.. Univ. of British Columbia, VAN- COUVER 8, B.C., Canada a Interaction of cellular and environmental factors in tumor histogenesis in vitro. Homo sapiens (Primates) AUGSTEN, H. Dr.habil., Prof. — Sekt. Biol. - Pflanzenphysiol., Friedrich-Schiller Univ., von-Hase-Weg 3, 69 JENA, East.Germany a The relationship between metabolism and development. Ficaria uerna (Ranunculaceae). (Gramineae) b Some problems of metabolism (enzyme activities) during germination. Pisum sativum (Papilionaceae) AUROUX. M. Dr.en Med. — Lab. d'Histol.-Erabryol. A. Fac. de Med., 45 rue des Sts. Peres, PARIS Vie. France a Developpement normal et anormal de I'encephale. Mus rattus (Rodentia), Homo sapiens (Primates) h Perturbations tardives du systeme nerveux central compatibles avec la vie (baisse de la capacite d'apprentissage). Rattus norvegicus (Rodentia) AUSTIN, C R. D.Sc. — Physiol. Lab., Univ. of Cambridge. Downing St., CAMBRIDGE CB2 3EG, England • a Investigations on gametes, fertilization and early development. (Polychaeta; Mollusca; Echinodermata; Reptilia; Mammalia) b Induced and spontaneous anomalies of development. (Mammalia) AVE, K. D.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki. FUKUOKA, 812, Japan a Heterogeneous cell composition of germ layers. (Amphibia) b Sialic acid distribution on the cell surface. Callus domesticus (Aves) AVEL. M. Dr., Prof. — Lab. de Biol. Gener., Fac. des Sci. de Bordeaux, 40 Rue Lamartine. TALENCE (Gironde). France • AVERKINA. Mrs. R. F. Cand.med.sci. — Inst, of Exper. Biol.. Acad, of Med. Sci. of the U.S.S.R.. Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. AVRAMOVIC (CERMELJ), Mrs. N. B.Sc. — Inst, of Nucl. Sci. "Boris Kidrich", BEL- GRADE. Yugoslavia 13 AWATTA, E. M.Sc. — Lab. of Embryol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi'ku, OSAKA, Japan a Analysis of the testis specific antigens. Cavia cobaya, Mas mtisculus (Rodentia) AX. P. Dr., Prof. — II. Zool. Inst, und Museum, Berlinerstr. 28. GOTTINGEN, W. Germany AXELROD, L. R. Ph.D. — Div. of Biol. Growth and Developm., Southwest Found, for Research and Educ, P.O.Box 28147, SAN ANTONIO, Tex. 78228. U.S.A. a Steroid metabolism in the fetus. Homo sapiens, Papio spec. (Primates) A.YKAg. I. D.V.M. — Inst, of Histol. and Embryol.. Med. Fac, Ataturk Univ., ERZURUM, Turkey AZOUBEL. R. M.D.. Ph.D. — Dept. de Morfol. Humana Functional e Apllcada, Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, Caixa Postal 301, RIBEIRAO PRETO. S.P., Brazil a Histochemistry of developing neurons. (Vertebrata) (in collaboration with A. R. CRUZ), b Allometric growth of the eye in hemispherectomized animals. Ratttis rattus (Rodentia) (in collaboration with A. R. CRUZ and S. lUCIF) c Effect of hemispherectomy on the thyroid gland. Rattus rattus (Rodentia) (in collaboration with A. R. CRUZ and S. lUCIF) d Effect of hypervitaminosis A on the fetus. Rattus rattus (Rodentia) BABA, S. D.Sc. — Dept. of Botany, Fac. of Sci., Kyoto Univ., KYOTO, Japan a Experimental induction of wound vessel member differentiation. Coleus blumei (Labiatae) (in collaboration with L. W. ROBERTS, Moscow, Idaho, U.S.A.) BABAYEVA, Mrs. A. G. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A- 135, U.S.S.R. BACCARINI. Miss I. M.D. — Dept. de Biol. Geral. Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4°andar, C.P. 253, BELO HORIZONTE, M.G., Brazil a Study of the nuclear size and DNA content (cytophotometry) of different organs in embryo and larva. Ascidia nigra (Ascidiae) h Study of the DNA synthesis with autoradiography and cytophotometry of endometrium, myometrium and placenta. Mus musculus (Rodentia) BACKHOUSE, K. M. M.B., B.S. — Dept. of Anat., Charing Cross Hosp. Med. School, 62 Chandos Place, LONDON W.C.2, England a Gubernaculum testis and testicular descent. (Mammalia) b Early embryology and implantation. Halichoerus grypus (Pinnipedia) BACKSTR5M, S. A. A. Fil.Dr. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden a Basic proteins during oogenesis and early development (biochemical, histochemical and autoradiographic methods). Paracentrotus lividus, Psammechinus miliaris (Echinoidea) BADE, E. G. M.D. — Inst, de Patol. Gener. y Exper.. Fac. de Ciencias Med., Univ. Nac. de Cuyo, Casilla de Correo 513, MENDOZA, Argentina BADINEZ, O. M.D., Prof. — Cat. de Embriol., Escuela de Med.. Univ. de Chile, Zanartu 1042, SANTIAGO, Chile BAEVSKY, J. B. Cand.biol.sci. — Inst, of Anim. Evolut. Morphol. and Ecol., Acad, of Sci. of the USSR, Lenin Avenue 33, MOSCOW W-71, U.S.S.R. a Retardation of embryo development and state of maternal endocrine glands during embryonic diapause. Talpa altaica (Insectivora), Martes zibellina, Mustela vison (Cat' nivoca), Rattus norvegicus. Mus musculus (Rodentia) BAFFONI, G. M. Dr.Biol.Sci., Prof. — 1st. di Anat. Comp., Univ. di Modena, Via Beren gario 14, 41100 MODENA, Italy a Growth and differentiation of the nervous cell. (Cyclostomata; Teleosfei; Amphibia; Aves; Mammalia) b Localisation of mitoses in the central nervous system: numerical variations of ventricular and extraventricular mitoses in the normal development, regenerating nervous tissue and in thyroxinated tadpoles. Xenopus spec, Bufo spec. (Anura), Triturus spec. (Urodela) c Regeneration of the nervous system in postmetamorphic animals. (Teleostei; Anura) d Regeneration of nerve fibres during larval life. (Urodela) e Differentiation of epidermal and intestinal epithelia. (Annelida, Crustacea) BAGWSKA (BORSUK), Mrs. I. M.D. — Inst, of Pathol. Anat.. Milit. Acad, of Med., Plac 9 Maja, JLODZ, Poland BAGII^SKI. S. M.D., Prof. (Emer.) — Narutowicza 94-9, {:0D2, Poland a Teratogenesis and developmental pathology. Homo sapiens (Primates) h Development of nervous system (microcinematography). Callus domesticus (Aves) BAGLIONI, C. M.D., Prof. — Dept. of Biol., Massachusetts Inst, of Technol., CAM- BRIDGE, Mass. 02139, U.S.A. • BAGNARA, J. T. Ph.D., Prof. — Dept. of Biol. Sci., Univ. of Arizona, TUCSON, Arizona 85721, U.S.A. • a Various aspects of the development and endocrinology of pigmentation. Many spp. (Amphibia) h Ultrastructure of chromatophores. Many spp. (Amphibia) 14 c Developmental physiology of xanthophores, erythrophores, and iridophores. Many spp. (Amphibia) BAIRATI, A. — 1st. di Genet.. Univ. di Milano, Via Celoria 10. 20133 MILANO, Italy a Electron microscopy of tissues. Dcosophila spec. (Diptera) BAKER, J. R. Ph.D. — Dept. of Zool. and Entomol., Iowa State Univ., AMES. Iowa 50010. U.S.A. a Incorporation and transport of labeled metabolites by early stage blastoderms in vitro. Gallus domesticus (Gallilormes). Pygoscelis adelic (Spheniscidae, Aves) b Incubation physiology and growth rate studies of early embryonic stages. Pygoscelis adelie (Spheniscidae, Aves) BAKER, Mrs. P. C. Ph.D. — Dept. of Zool., Univ. of California. BERKELEY, Calif. 94720, U.S.A. a The ultrastructural morphology and histochemistry of cells undergoing morphogenetic movement. Hyla regitla, Rana pipiens, Xenopus laevis (Anura) h The ultrastructure of wound healing. Hyla regilla, Rana pipiens, Xenopus laevis (Anura) c The ultrastructural morphology of the gastrula and neurula stages. Hyla regilla, Rana pipiens, Xenopus laevis (Anura) BAKER, R. F. Ph.D — Dept. of Biol. Sci., Univ. of Southern California, University Park, LOS ANGELES, Calif. 90007, U.S.A. a Developmental genetics and regulation of macromolecular synthesis (Echinoidea) BAKER, T. G. Ph.D. — Hormone Lab., Dept. of Obstet. and Gynaecol., Univ. of Edinburgh, Chalmers St., EDINBURGH 3, Scotland, U.K. a Oogenesis. (Primates) b The effects of X-rays on female germ cells. (Rodentia; Primates) c The fine structure and metabolic activity of oogonia and oocytes. (Rodentia; Primates) d Cytological and endocrine studies of ovulation, fertilization and early development i n vitro. Rattus norvegicus, Mus musculus (Rodentia), Homo sapiens and other Primates e The structure and hormonal control of the placenta maintained in organ culture. Homo sapiens (Primates) BAKER, W K. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Genetic studies on differentiation processes. Drosophila spec. (Diptera) BAL, A. K. D.Phil. — Dept. des Sci. Biol., Univ. de Montreal, Case Postale 6128, MON- TREAL, Que., Canada a Changes in the membrane system of cells during differentiation (root meristem). Allium cepa (Liliaceae) h Changes in the membrane system during oogenesis. Arbacia punctulafa (Echinoidea) c Autoradiographic study of nucleic acid synthesis during oogenesis Arbacia punctulata (Echinoidea) BALINSKY, B. I. Dr.Biol.Sci., Prof. — Dept. of Zool., Univ. of the Witwatersrand, Milner Park, JOHANNESBURG. S.Africa • a An electron microscopic study of early development, (lower Vertebrata) BALLARD, W. W. Ph.D., Prof. — Dept. of Biol. Sci., Dartmouth Coll., HANOVER, N.H. 03755, U.S.A. a Morphogenetic movements in embryos. (Teleostei) h Monograph on developmental anatomy. Ambystoma spec. (Urodela) BALLS, M. D.Phil. — School of Biol. Sci., Univ. of East Anglia, Wilberforce Rd., NOR- WICH, NOR 88C, England a Neoplasms particularly lymphosarcomas. Xenopus laevis (Anura) h Nuclear-cytoplasmic interaction in early development. Xenopus laevis (Anura, c Control of cell division. Xenopus laevis (Anura) BALON, E. K. Ph.D. — Lab. of Fish. Research, Zelezna Studienka 806, BRATISLAVA, Czechoslovakia — temporarily up to 1971: Centr. Fish. Research Inst. (UNDP-FAO), P.O.Box 100, CHILANGA, Zambia a Embryology and life cycle. Cyprinus carpio (Cyprinidae) , Hydrocynus vittatus, Alestes spec. (Characidae, Teleostei) b Studies on development. Tilapia spec. (Cichlidae; Mormyridae, Teleostei) BALTUS, Mis E. J. D.Sc. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Studies on DNA synthesis during oogenesis. (Amphibia) b Evolution of cytoplasmic DNA during embryonic development. (Amphibia) BALTZER, F. Dr., Prof. (Emer.) — Zool. Inst., Univ. Bern, Sahlistr. 8, 3000 BERN, Switzerland * BAND, R. N. Ph.D., Prof. — Dept. of Zool., Michigan State Univ., EAST LANSING, Mich. 48823, U.S.A. a Mechanism of cell-to-cell adhesion. Acanthamoeba (= Mayorella) palestinensis (Rhi- zopoda 15 b Cytokinesis studies; the induction of division in uninucleate cells without mitosis, leading to enucleate and nucleate daughter cells. BANERJEE, B. Ph.D. — Dept. of Entomol., Tea Research Assoc, Tocklai Exper. Station, JORHAT 8, Assam, India a Reproductive physiology and histochemical distribution of phosphatases. Odontotermes redemanni (Termitidae, Isoptera) h Caste development. Odontotermes redemanni (Termitidae, Isoptera) BANKS, B. Dr. — Dept. of Chem.. Univ. Coll. London, Gower St., LONDON W.C.I, England BANTHORPE, D. V. Dr. — Dept. of Chem., Univ. Coll. London, Cower St., LONDON W.C. 1, England BAPAT, Miss S. M.Sc. — Dept. of Zool., Shivaji Univ., Vidyanagar, KOLHAPUR-4, Maharashtra State, India BARABANOV, V. M. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Bakiyskaya St. 8, MOSCOW A-315, U.S.S.R. BARASA, A. — 1st. di Anat. degli Anim. Domestici, Univ. di Torino, Via Nizza 52, 10126 TORINO, Italy a Morphogenetic processes of the wing following removal of some parts. Gallus domesticus (Aves) b Mitochondria and lipochondria in cells cultured in vitro in various experimental con- ditions. Gallus domesticus (Aves) c Origin of binucleate cells in cultures. (Aves) d Effect of subnormal temperatures on mitosis of cells cultured in vitro. (Aves) e Mitoses of binucleate cells. (Aves) BARBAGALLO (PATTI), Mrs. J. Dr. — 1st. di Zool., Univ. di Catania, Via Androne 81, 95124 CATANIA, Italy a Physiological and experimental embryology of the earliest developmental stages. Por- ce//io laevis (Isopoda) BARBIERI, F. D. Dr.Biochem., Prof. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Chemical factors involved in fertilization: jelly coats and diffusible factor. Bufo arenarum (Anura) BARBOSA AYUCAR, E. Dr.en Med. — Serv. de Embriol. Exper., Cat. de Anat., Fac. de Med., VALLADOLID, Spain a Effect of puromycin on morphogenesis. Gallus domesticus (Aves) BARCH, Mrs. S. H. Ph.D. — Zool. Dept., Biol. Research Center. Michigan State Univ.. EAST LANSING, Mich. 48823, U.S.A. BARIGOZZI, C. Dr.Sci.. Prof. — 1st. di Genet., Univ. di Milano, Via Celoria 10, 20133 MILANO, Italy • a DNA replication in cells cultured in vitro. Drosophila melanogaster (Dipteca) BARNARD, P. B. T. Fil.Lic. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden a Ultrastructural and chemical differentiation of brown adipose tissue in pre- and neonatal animals, especially mitochondrial changes. Rattus norvegicus (Rodentia). Ocyctolagus cuni- cuius (Lagomorpha) BARR, Miss G. B.Sc. — Dept. of Zool., The Univ., GLASGOW W.2, Scotland, U.K. BARSACCHI, Miss G. Dr.Biol.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta -i, PISA, Italy a Lampbrush chromosomes. (Urodela) BART, A. — Lab. de Zool., Fac. des Sci., B.P. 36, 59 LILLE-Distribution, France a Morphogenesis and regeneration. Carausius morosus ( Phasmidoptera) BARTELMEZ, G. W. f Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. (deceased) BARTH, L. G. Ph.D., Prof. — Marine Biol. Lab., Box 27, WOODS HOLE, Mass. 02543. U.S.A. • a The sodium dependence of embryonic induction. Rana pipiens (Anura) BARTH, Mrs. L. J. Ph.D. — Marine Biol. Lab., Box 27, WOODS HOLE, Mass. 02543, U.S.A. • a The sodium dependence of embryonic induction. Rana pipiens (Anura) b Nature of the hybrid block to development. Rana pipiens x R. sylvatica (Anura) BARTH, R. H.. Jr. Ph.D. — Dept. of Zool., The Univ. of Texas, AUSTIN, Tex. 78712. U.S.A. a Physiology of reproduction: role of corpora allata and neurosecretory system in control of reproductive behavior and physiology, and regulation of the reproductive cycle of the female. Byrsotria fumigata. Leucophaea maderae, Nauphoeta cinerea and other spp. (Dictyoptera) h Effect of insect hormones on RNA metabolism during pupal diapause and adult devel- opment. Antherea pernyi, Hyalophora cecropia and other spp. (Saturniidae, Lepidoptera) 16 BARTKE, A. Ph.D. — Worcester Found, for Exper. Biol.. 222 Maple Ave., SHREWS- BURY, Mass. 01545, U.S.A. a Hormonal control of spermatogenesis; effects and mechanism of action of prolactin. (Quan- titative histological analysis of seminiferous epithelium and biochemical measurements of Leydig cell activity). Mus miisculus (Rodentia) BARTONE, J. C. Ph.D. — Dept. of Anat., Coll. of Med., Howard Univ.. WASHINGTON, D.C., U.S.A. BARTOS, F. RNDr., C.Sc, Prof. — Dept. of Biol., Med. Fac, Charles Univ., §imkova 870, HRADEC KRALOVfi, Czechoslovakia a Cytology of granulation tissue. Rattus norvegicus, Mus musculus (Rodentia) b Regeneration of bone and cartilage. Canis lamiliaris (Carnivora) c Developmental biology of ligamentum nuchae (cells, collagen and elastin). Bos taurus (Artiodactyla) BARUA, D. N. Ph.D. — Bot. Branch, Tea Research Assoc, Tocklai Exper. Station, CIN- NAMARA, P.O., Assam, India BATEMAN, A. J. Ph.D., D.Sc. — Cytogenet. Dept., Paterson Labs., Christie Hosp. and Holt Radium Inst., Wilmslow Rd., MANCHESTER 20, England a The development of embryos with genotypes which are lethal because of aneuploidy or partial aneuploidy (progeny of translocation heterozygotes). Mus musculus (Rodentia) b Development of testis with special reference to Sertoli cells. Mus musculus (Rodentia) c Effect of X-rays on immature testis. Mus musculus (Rodentia) BATTLE, Miss H. I. Ph.D., Prof. — Dept. of Zool., Coll. of Sci., Univ. of Western Ontario, LONDON, Ont., Canada a Effects of chloramphenicol on early developmental processes. (Teleostei) b Comparative effects of selective inhibitors of amino acid, protein and RNA synthesis on early developmental processes. (Teleostei) BAUME, L. J. D.M.D., Prof. — Inst, de Med. Dentaire, 30 Rue Lombard, 1200 GENEVE, Switzerland BAUTZ (PORTMANN), Mrs. A. M. Lic.es Sc. — Lab. de Zool., Fac. des Sci. de Nancy. 30 rue Ste Catherine, 54 NANCY, France a Effet des rayons X sur la regeneration. Nereis diversicolor (Polychaefa errantia) BAVEJA. Miss R. M.S. — Dept. of Anat., Motilal Nehru Med. Coll., ALLAHABAD-1, India a Role of endometrium and extraplacental membranes in the fetomatemal exchange process, histochemical and cytochemical methods. Homo sapiens (Primates) (in collaboration with H. C. VARMA) BAXTER (GRILLO), Mrs. D. L. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria BAXTER, E. W. Ph.D. — Biol. Dept., Guy's Hosp. Med. School, LONDON S.E.I, England a Biology, including development and metamorphosis. Petromyzon spec. (Cyclostomata) b Food changes during larval period of growth. Ammocoetes (Cyclostomata) c Uptake and fate of "Thorotrast". Ammocoetes (Cyclostomata) BEAMS, H. W. Ph.D., Prof. — Dept. of Zool., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Synthesis and deposition of yolk, b Embryology of blood BEARN, J. G. B.S. — Anat. Dept., Middlesex Hosp. Med. School, LONDON W.l, England BEATTY, R. A. Ph.D. — Inst, of Anim. Genet.. Univ. of Edinburgh, West Mains Rd., EDINBURGH EH9 3JN, Scotland, U.K. • a Breeding of genetically tagged strains for use in developmental biology. Oryctolagus cuniculus (Lagomorpha) b Developmental biology and genestics of gametes. Drosophila spp. (Diptera), Mus musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha) BEAUDOIN, A. R. — Dept. of Anat., Med. School, Univ. of Michigan, East Med. Bldg., ANN ARBOR, Mich. 48104, U.S.A. BEAUMONT, A. Dr.es Sci., Prof. — Lab. d'Anat. comp., Fac. des Sci. d'Orsay, Univ. de Paris, Batiment 441, 91-ORSAY, France a Evolution du pancreas larvaire au cours de la metamorphose (microscopic electronique). Discoglossus pictus, Alytes obstetricans (Anura) BEAUMONT, Miss H. M. Ph.D. — Dept. of Anat., Med. School. Univ. of Birmingham. Edgbaston, BIRMINGHAM 15. England a Effects of irradiation on male and female germ cells, judged by changes in population of cells in the gonads and the capacity of gametes to produce viable embryos. Rattus nor- vegicus (Rodentia) b Definition of factors influencing the radiosensitivity of germ cells (e.g. metabolic activity. changes in the hormonal environment). Rattus norvegicus (Rodentia) BEAUPAIN (CREPY). Mrs. D. Dr.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S.. 49 bis Av. de la Belle Gabrielle, 94 NOGENT-sur-MARNE, France 17 a Caracterisation des substances morphogenes qui interviennent au cours du developpement embryonnaire du poumon. Gallus gallus (Aves) b Caracterisation des substances inhibitrices de la regeneration du pharynx. (Turbellaria) BEBBINGTON. A. M.Sc, M.I.Biol. — Dept. of Zoo!., Univ. of Bristol, BRISTOL BS8 lUG, England a Development. (Aplysiidae, Opisthobcanchia, Gastropoda) h Development. ( Aplacophora, Amphineura) BECK, F. M.D., Ch.B. — Dept. of Anat., The London Hosp. Med. Coll.. Turner St., White- chapel, LONDON E.l, England • a The effect of trypan blue on development. (Mammalia) h Embryonic nutrition. (Mammalia) c The postnatal maturation of intestinal epithelium. (Mammalia) BECKER, H. J. Ph.D., Prof. — Zool. Inst, der Univ. Miinchen, Luisenstr. 14, 8 MONCHEN 2, W.Germany • BECU§ (LAURENTIU), Mrs. M. M.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure§ of the Acad, of the S.S.R., Str.Gh. Marinescu 38, TIRGU-MURE§, Romania BEERMANN, W. Dr.rer.nat., Prof. — Max Planck Inst, fiir Biol., Abt. Beermann, Spemann- str. 34, 74 TUBINGEN, W. Germany • a Puffing and differentiation of chromosomes in salivary glands. Chironomus tentans (Diptera) BEETSCHEN. J. C. Dr.es Sci., Prof. — Lab. de Biol. Gener., Fac. des Sci., 118 Route de Narbonne, 31 TOULOUSE (04), France • a Recherches cytologiques, embryologiques et genetiques sur I'heteroploidie experimentale. (Amphibia) b Etude d'un facteur recessif semi-letal, ac. Pleurodeles waltlii (Urodela) (en collaboration avec A. JAYLET) c Etude experimentale de la differenciation des cellules embryonnaires en culture in vitro. (Urodela) (en collaboration avec Mme A. M. DUPRAT) BEGLEY, D. B.Sc. — Dept. of Zool., Univ. of Nottingham, NOTTINGHAM, England a Postnatal antibody absorption. Rattus norvegicus (Rodentia) b Electron microscope studies of the differentiating intestine. (Mammalia) BEHRMAN, S. J. M.D., Prof. — Dept. of Obstet. and Gynecol., Center for Research in Reprod. Biol., Univ. of Michigan Med. Center, ANN ARBOR, Mich. 48104, U.S.A. a Antigenicity of the trophoblast. Ocyctolagus cuniculus (Lagomorpha), Mus musculus (Ro- dentia), (Primates) h Sperm antibodies. BEINBRECH, G. Dr. — Inst, fur Zellphysiol., Abt. fiir Biol., Ruhr-Univ., Postfach 2148, D-463 BOCHUM, W.Germany a Development of muscles during metamorphosis: formation of the myofibrils and of the sarcotubular system. Phocmia regina (Diptera) BELKA (GRZYBEK), Mrs. A. Ph.D. — Dept. of Gen. Biol.. Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE 8, Poland a Histochemical studies of adrenal cortex in regeneration and compensation processes. (Rodentia) BELL, E. Ph.D., Prof. — Dept. of Biol., Massachusetts Inst, of Technol., CAMBRIDGE, Mass. 02139, U.S.A. o BELL, L. G. E. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 5NH. England a Membrane mediated control of cell behaviour especially movement. Amoeba pcoteus (Rhi- zopoda) h The changing relationship between nucleus and cytoplasm during the cell cycle. Amoeba proteus (Rhizopoda) BELLAIRS, A. d'A. D.Sc. — Dept. of Anat., St. Mary's Hosp. Med. School, Paddington, LONDON W.2, England a Morphogenesis of skeleton. (Reptilia; Aves; Mammalia) h Embryonic membranes. (Reptilia) c Regeneration. (Reptilia) BELLAIRS, Mrs. M. R. Ph.D. — Dept. of Anat. and Embryol., Univ. Coll., Cower St.. LONDON W.C.I, England • a An electron microscopical and histochemical analysis of yolk formation. Gallus domesticus (Aves) (in collaboration with Mrs. M. A. England) b Cell migration within the embryo. Gallus domesticus (Aves) (in collaboration with Mrs. J. E. M. HEAYSMAN, Dept. of Zool.) BELLINI (CARDELLINI). Miss L. Ph.D. — 1st. di Zool. e Anat. Comp., Fac. di Sci.. Univ. degli Studi, Piazza F. Marchetti, CAMERINO, Italy BELLONI, C. Dott.Sci.biol. — 1st. di Zool. Gener., Fac. di Sci. Agraria, Univ. di Perugia, S. Pietro, PERUGIA, Italy BELLWARE, F. T. B.Sc. — Dept. of Zool., Coll. of Sci., Univ. of Western Ontario, LONDON. Ont.. Canada 18 a The developmental role of ribonucleic acid synthesis in early embryogenesis examined with the aid of actinomycin D. (Teleostei) BELOUSSOV, L. V. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. BELSARE, D. K. Ph.D. — Post-Graduate Dept. of Zool., Univ. of Nagpur, NAGPUR, India BENAZZI (LENTATI), Mrs. G. Prof. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, PISA, Italy a Chromosome cycles in amphigonic and pseudogamous biotypes; determinism of pseudogamy and polyploidy. (Tricladidea, Turbellaria) BENAZZI, M. Prof. — 1st. di Zool e Anat. Comp. dell'Univ., Via A. Volta 4, PISA, Italy • a Asexual reproduction, pseudogamy, polyploidy and heredity. (Tricladidea, Turbellaria) BENDER, H. A. Ph.D., Prof. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. 46556, U.SJ^. a Phenogenetic studies of the ovarian tissue of female-sterile mutants. Drosophila melanogastet (Diptera) h Physiological genetics. Drosophila melanogaster (Diptera) c Genetics. Coelopa frigida (Diptera) BENIRSCHKE, K. M.D., Prof. — Dept. of Pathol., Dartmouth Med. School, HANOVER, N.H. 03755, U.S.A. a Study of fetal adrenal development. Dasypus novemcinctus (Edentata), Oedipomidas oedipus (Primates) b Chromosome studies. Dasypus novemcinctus (Edentata) c Study of placentation, fetal development and drug toxicity on the embryo. Dasypus novem' cinctus (Edentata) d Comparative chromosome studies. (Equidae, Perissodactyla; Camelidae, Artiodactyla) BENNETT, Mrs. D. Dr. — Dept. of Anat., Med. Coll., Cornell Univ., 1300 York Ave., NEW YORK, N.Y. 10021, U.S.A. BENOIT, J. A. A. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle. 94-NOGENT-sur-MARNE, France • a Etude in vitro de I'embryon. Mus musculus (Rodentia) b Etude experimentale in vitro de la gastrula. Mus musculus (Rodentia) BEN-OR (MILSTEIN), Mrs. S. Ph.D. — Dept. of Physiol.. Hadassah Med. School, P.O. Box 1172, JERUSALEM, Israel BENZIE, Miss V. L. Dr.phil. — Dept. of Zool., Univ. of Canterbury, Priv. Bag, CHRIST- CHURCH, New Zealand a Descriptive embryology. Galaxias spp. (Galaxiidae. Teleostei) BER, A. M.D., M.V.D.. Prof. — Endocrinol. Unit of the Rogoff Med. Res. Inst., Beilinson Hosp., PETAH-TIKVA, Israel a Development of eye reaction to vitamin Bl, Hyla spec, Bufo spec, Pylobates spec. (Anura) BERDYSHEVA, L. V. Cand.biol.sci. — Lab. of Physiol., Inst, of Developra. Biol.. Acad. of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. BEREITER-HAHN. J. Dr.phil.nat. — Inst, fur Kinemat. Zellforsch., Johann-Wolfgang- Goethe Univ.. Senckenberganlage 27. 6000 FRANKFURT a.M.. W.Germany a Functional variability of tonofilament bundles in epidermal cells during embryonic devel- opment, wound healing and tissue culture (time-lapse cinemicrography, histochemistry. electron microscopy). Lebistes reticulatus (Poeciliidae), Pterophyllum scalar e (Cichlidae, Teleostei) h Variation of dry mass/ water ratio in different parts of the egg from fertilization through first cleavage, studied by interference microscopy. Psammechinus miliaris (Echinoidea) c Electron microscopic study of pigment granule formation in melanophores. Pterophyllum scalare (Cichlidae), Lebistes reticulatus (Poeciliidae, Teleostei) d Analysis of pigment granule movement in situ and in cultured cells. Pterophyllum scalare (Cichlidae), Lebistes reticulatus (Poeciliidae, Teleostei) BERENDES, H. D. Dr., Prof. — Zool. Lab., Dept. of Cell Biol, Univ. van Nijmegen, Driehuizerweg 200, NIJMEGEN, Netherlands • a Induction and repression of puff activity in polytene chromosomes. Drosophila spp. (Diptera) b Gene function and differentiation in salivary gland cells. Drosophila spp. (Diptera) c Hormonal regulation of postembryonic development. (Diptera) BERENDSEN, W. Drs. — Biol. Ultrastruct. Research Unit, State Univ., Janskerkhof 3, UTRECHT. Netherlands a Experimental morphology of cytoplasmic structures in early developmental stages. Limnaea stagnalis (Pulmonata, Gastropoda) BERESFORD. W. A. D.Phil. — Dept. of Anat., Med. Center, West Virginia Univ.. MORGANTOWN. W.Va. 26506. U.S.A. a The influence of hypervitaminosis A on the developing temporo-mandibular joint. Rattus norvegicus (Rodentia) 19 b Fracture healing in the os priapi and mandible and its response to castration or the administration of anabolic androgenic hormone. Rattus norvegicus (Rodentia) BERG, W. E. Ph.D., Prof. — Dept. of Zool., Univ. of California, BERKELEY, Calif. 94720, U.S.A. • BERGERARD, J. Dr.es Sci., Prof. — Lab. de Zool., Fac. des Sci., 91 ORSAY, France a Effects of thermal stress on sexual differentiation. Carausius morosus (Cheleutoptera) h Effects of thermal stress and supernumerary chromosomes en development. Locusta mi' gratoria (Orthopfera) BERGQUIST, H. Ph.D. — Zool. Inst., Univ., of Gothenburg, 4de Langgatan 7B, GOTE- BORG SV. Sweden • BERLYN, G. P. Ph.D., Prof. — School of Forestry, Yale Univ., 205 Prospect St., NEW HAVEN, Conn. 06511, U.S.A. a Quantitative cytochemical investigations of radiation effects on nucleic acids, proteins and lignification in relation to senescence and cellular death. Pinus lambertiana (Gymnospermae) BERNARD, C. Lic.es Sci., M.A. — Lab. de Physiol. Anim., Fac. des Sci., 40 Av. de Recteur Pineau, 86 POITIERS, France a Electrophysiological study of the embryonic heart. Rattus norvegicus, Cavia porcellus (Rodentia) BERNARD, F. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38- GRENOBLE, France BERNDORFER, A. Dr.med.habil. — Childrens Hosp. "Paul Heim", Dept. for Congenital Malformations, tllldi ut 86, BUDAPEST VIII, Hungary — Private address: Benczur utca 39/a, BUDAPEST VI, Hungary a Clinical embryopathology. b Intrauterine regenerations of congenital malformations. c Biological study of malformations. d Etiology of malformations from clinical viewpoints. BERNFIELD, M. R. M.D. — Dept. of Pediat. and Human Developm., School of Med., Stanford Univ., 300 Pasteur Drive, PALO ALTO, Calif. 94305, U.S.A. a Embryonic pancreas and salivary gland: synthesis of macromolecules (collagen, RNA, enzymes) during inductive interactions in vitro; relation between DNA synthesis and differentiation. Mus musculus (Rodentia) b Extracellular materials (collagen, mucopolysaccharide) during in vitro morphogenesis (pancreas, salivary gland). Mus musculus (Rodentia) c Translation level controls (tRNA, ribosomes) during embryonic and hormonal-induced development. Gallus domesticus (Aves) BERNSTEIN, G. S. Ph.D., M.D. — Dept. of Reprod. Physiol., Los Angeles County Gener. Hosp., LOS ANGELES, Calif. 90033, U.S.A. — Dept. of Obstet. and Gynecol., Univ. of S.California, School of Med., P.O.Box 96, LOS ANGELES, Calif. 90033, U.S.A. (no embryological work in progress) BERREUR (BONNENFANT), Mrs. J. Dr.es Sci. — Lab. de Genet. Evol. et de Biometrie. C.N.R.S., 91 GIF-sur-YVETTE, France a Controle hormonal de la differenciation sexuelle. (Isopoda, Crustacea) b Recherches sur les controles endocrines de la gametogenese par la culture in vitro. (Malacostraca, Crustacea) BERRILL, N. J. Ph.D. — 410 Swarthmore Ave.. SWARTHMORE, Pa. 19081, U.S.A. a Regeneration; metamorphosis: asexual reproduction (histogenesis). Branchiomma ('= Dasy- chone) nigromaculata, Sabella melanostigma (Sabellidae, Polychaeta) BERRY, M. Ph.D. — Dept. of Anat., Med. School. Univ. of Birmingham, Edgbaston, BIRMINGHAM 15, England a Effects of X-irradiation on central nervous development BERRY, S. J. Ph.D. — Dept. of Biol., Wesleyan Univ., MIDDLETOWN, Conn. 06457. U.S.A. a Nucleic acid metabolism during differentiation (ultracentrifugation, gradient centrifugation, autoradiography, chromatography). Hyalophora cecropia (Lepidoptera) b Endocrine control of differentiation (light and electron microscopy, autoradiography, organ culture). (Saturniidae, Leptidoptera) BERTALANFFY, F. D. Ph.D., Prof. — Dept. of Anat., Univ. of Manitoba, 750 Bannatyne Ave., WINNIPEG 3, Manitoba, Canada a Rates of cell division of neoplastic cell populations. Rattus rattus. Mus musculus (Roden- tia) h Mitotic rates of regenerating liver parenchyma. Rattus rattus (Rodentia) c Cell renewal and cytodynamics of normal cell populations. Rattus rattus (Rodentia) d Effects of cytosine arabinoside on cell development and proliferation. Rattus rattus (Ro- dentia) BERTMAR, G. Ph.D. — Sect, of Ecolog. Zool., Dept. of Biol., Univ. of Umea, 90187 UMEA, Sweden a Experimental developmental morphology of the olfactory organ. Salmo spec. (Teleostei) 20 b Developmental morphology of the epibranchial organs. Coregonus (Coregonidae), Ctupea (Clupeidae), Citharinus (Characidae, Teleostci) BERTOLINI. B. Dr.Biol.Sc. — 1st. di Anat. Comp. "Battista Grassi", Fac. di Sci., Univ. di Roma, Via A. Borelli 50, 00161 ROMA, Italia a Ultrastructural cytochemistry of the various cell types in the oviduct during the reproduc- tive cycle and under experimental conditions. (Amphibia) b Subcellular localization of acid hydrolases in the acrosome of spermatozoa. Pacacenfcotus lividus (Echinoidea), Tritiicus cristatus (Urodela), Rattus nocvegicus (Rodentia) BERTON. J. P. Dr. — Centre de Biol. Appl., Ecole de Perfectionnement Agric. 36 AZAY- le-FERRON, France — Unite de Rech. de Physiol. Placent., I.N.S.E.R.M. — U 11, Hop.St.Antoine. PARIS 12e, France a Role of mesonephros and metanephros in composition of amniotic and allantoic fluids (intra-uterine surgery). Ovis aties, Sus scrofa (Artiodactyla), Ovyctolagus cuniculus (Lagomorpha) b Chorio-allantoic cell structure. Ovis aties. Sus scrota (Artiodactyla), Oryctolagus cuniculus (Lagomorpha) c Hypertrophic compensatory response of fetal kidney to unilateral nephrectomy in vivo. Ovis aries, Sus scrofa (Artiodactyla), Oryctolagus cuniculus (Lagomorpha) d Development of fetal lung after nephrectomy in vivo. Ovis aries, Sus scrota (Artio- dactyla), Oryctolagus cuniculus (Lagomorpha) BETCHAKU, T. D.Sc. — Dept. of Biol., Kline Biol. Tower. Yale Univ.. NEW HAVEN. Conn. 06520. U.S.A. a In vitro study on the mechanism of contact inhibition in embryonic myocardioblasts (time-lapse cinematography and electron microscopy). Gallus domesticus (Aves) b Cellular mechanism of formation of the regeneration blastema (tissue culture, time-lapse cinematography, autoradiography, electron microscopy and cytochemistry). (Planariidae, Turbellaria) BETTANIN (BELGRANO). Mrs. S. Dr.Nat.Sci. — 1st. di Zool.. Univ. di Genova, Via Balbi 5, GENOVA, Italy a Embryo development of a parthenogenetic marine form. Penilia avirostris (Cladocera, Crustacea) (in collaboration with N. DELLA CROCE) b Growth of the embryo. Penilia avirostris (Cladocera, Crustacea) (in collaboration with N. DELLA CROCE) c Formation of resting eggs. Penilia avirostris (Cladocera, Crustacea) (in collaboration with N. DELLA CROCE) BETZ. T. W. Ph.D. — Dept. of Biol.. Fac. of Sci.. Carleton Univ.. OTTAWA I. Ont.. Canada a Hormonal control of the functional differentiation of the duodenal mucosa and the retina in the embryo. Gallus domesticus (Aves) b Hormonal and dietary control of embryonic growth. Gallus domesticus (Aves) BEYNON, A. D. G. B.D.S. — Dept. of Oral Anat., The Dental School. Univ. of Newcastle upon Tyne, Northumberland Rd.. NEWCASTLE upon Tyne NEl 8TA, England, a Development of the root and periodontal ligament of the molar teeth. (Rodentia) BHAGAVAN, N. V. Ph.D. — Dept. of Anat., School of Med.. Univ. of Hawaii. 2538 The Mall, HONOLULU, Hawaii 96822. U.S.A. BHATTACHERJEE. S. M.Sc. — Dept. of Zool., Presidency Coll., CALCUTTA-12. West Bengal, India BHUSSRY, B. R. D.D.S., Ph.D., Prof. — Dept. of Anat.. School of Med.. Georgetown Univ., 3900 Reservoir Rd., N.W.. WASHINGTON. D.C. 20007. U.S.A. BIAGIONI. M. Dott. — 1st. di Biol. Gener., Fac. di Med.. Via del Giochetto. 06100 PERUGIA, Italy a Influenza del sali di cobalto sull'eritropoiesi. Oryctolagus cuniculus (Rodentia) BIBORSKI. J. — Dept. of Reprod. Physiol., Inst, of Zootech.. A.Mickiewicza 24-28, KRAKOW, Poland BIEBER. S. Ph.D. — Richard L. ConoUy Coll.. Long Island Univ., 385 Flatbush Ave.. Extension, NEW YORK, Brooklyn N.Y. 11201. U.S.A. BIELA53SKA (OSUCHOWSKA). Mrs. Z. Dr., Prof. — Dept. of Histol. and Embryol., Fac. of Vet. Med.. Warsaw Agricult. Univ.. Grochowska 272. WARSZAWA. Poland a Histochemical studies on differentiation of gonads. Sus domesticus (Artiodactyla) and other spp. (Verfebrata) BIELKA. H. Dr.rer.nat.habil. — Inst, fiir Zellphysiol.. Deutsche Akad. der Wissensch. zu Berlin, Lindenberger Weg 70, 1115 BERLIN-Buch, East.Germany BIER, K. t Dr.rer.nat., Prof. — Zool. Inst, der Westf. Wilhelms-Univ.. Badestr. 9. 44 MUN- STER/Westf., W.Germany • (deceased) BIERNE. J. D.E.S. — Lab. de Biol. Gener.. Fac. des Sci.. B.P. 347. 51 REIMS, France BIESENBEEK. F. J. — Anat.-Embryol. Inst.. Univ. of Amsterdam. Mauritskade 61. AM- STERDAM. Netherlands 21 a Light-microscopical, electron-microscopical, histochemical, physiological and experimental teratogenetic studies of heart development in the embryo. Gallus domesticus (Aves) (in collaboration with J. DRUKKER, H. M. LAANE and J. A. LOS) BIGGELAAR, J. A. M. v. d. M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT. Netherlands a Nucleic acid metabolism during early developmental stages. Limnaea stagnalis (Gastropoda) b Synthesis of proteins during early developmental stages. Limnaea stagnalis (Gastropoda) DIGGERS, J. D. D.Sc, Ph.D., Prof. — Div. of Popul. EVynamics, School of Hyg. and Publ. Health, The Johns Hopkins Univ., 615 North Wolfe St., BALTIMORE, Md. 21205. U.S.A. a Organ culture of fallopian tubes and ovaries. (Mammalia) h Culture and metabolism of eggs. (Mammalia) c Oocyte maturation. (Astecoidea). Homo sapiens and other spp. (Mammalia) d Reproduction and embryology of wild animals. (Mammalia) BIJTEL. Miss J. H. Dr.Sc, M.D. — Dept. of Anat. and EmbryoL, State Univ. of Groningen, Oostersingel 69, GRONINGEN, Netherlands • BILLETT. F. S. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 5NH, England a Differentiation of embryonic epidermis. Xenopus laevis (Anuca), Ambystoma mexicanum (Urodela) b Fine structure of early oocytes, pre-vitellogenic phase. Xenopus laevis (Anura), Am' bystoma mexicanum (Urodela) BILLINGTON, W. D. Ph.D. — Dept. of Zool., Univ. of Oxford, Parks Road, OXFORD OXl 3PF, England a Biology of the trophoblast; immunological aspects of mammalian pregnancy. Mus musculus (Rodentia) BIRCH (ANDERSEN), A. — State Serum Inst., Amagerboulevard 80, COPENHAGEN S, Denmark BIRGE. W. J. Ph.D., Prof. — Dept. of Zool., Univ. of Kentucky, Funkhouser Bldg., LEXINGTON, Ky. 40506. U.S.A. BIRKY, C. W., Jr. Ph.D. — Dept. of Zool., Univ. of California, BERKELEY. Calif. 94720, U.S.A. BISHOP, D. W. Ph.D., Prof. — Dept. of Physiol., Med. Coll. of Ohio at Toledo, P.O.Box 6190, TOLEDO, Ohio 43614, U.S.A. a Contractile protein and contractile mechanisms of spermatozoa. (Mammalia) h Testicular enzymology. (Mammalia) c Immunologic impairment of spermatogenesis. Cavia spec. (Rodentia) BISHOP, M. W. H. Ph.D. — Dept. of Anim. Husbandry, Univ. of Bristol, Langford House, Langford, BRISTOL, England BISHOP (CALAME), Mrs. S. M. Lic.es Sci. — Dept. of Poultry Husbandry, Univ. of California, DAVIS, Calif. 95616, U.S.A. • BLACK, R. E. Ph.D., Prof. — Dept. of Biol., Coll. of William and Mary, WILLIAMSBURG, Va. 23185, U.S.A. a Use of isotopes to trace metabolic pathways in embryos, (marine Invertebrata) b Development of enzymes related to Krebs cycle in embryos, (marine Invertebrata) BLACKLER, A. W. Ph.D., Prof. — Sect, of Genet., Developm. & Physiol., Div. of Biol. Sci., Stimson Hall, ITHACA, N.Y. 14850, U.S.A. • BLAKE, J. A. Ph.D. — Pacific Marine Station. Univ. of the Pacific, DILLON BEACH, Calif. 94929. U.S.A. a Reproduction and larval development from egg through metamorphosis in California and New England species. Polydora ligni, P. commensalis, P. concharum. P. socialis. P. caul' leryi, P. quaddlobata, P. websteri, P. sp. nov., Streblospio benedicti, Prionospio pygmaeus (Polychaeta) BLANCHET, J. P. Dr.Spec. — Sect, de Biol. Gen. et Appl., Univ. de Lyon, 43 Bd. du 1 1 Novembre 1918, 69 VILLEURBANNE, France a Evolution des deshydrogenases lactiques au cours de I'erythropoiese embryonnaire. Gallus domesticus (Aves) BLANDAU, R. J. Ph.D., M.D. — Dept. of Biol. Structure, School of Med.. Univ. of Washington, SEATTLE 5, Wash., U.S.A. BLAXTER, J. H. S. M.A. — Dept. of Nat. Hist., Marischal Coll., Univ. of Aberdeen, ABERDEEN, Scotland, U.K. BLECHSCHMIDT, E. Dr.med., o.o.Prof. — Anat. Inst, der Univ., Kreuzbergring 36, 34 GOTTINGEN, W.Germany a Elektronenmikroskopie des Embryos. Homo sapiens (Primates) BLOCH, D. P. Ph.D., Prof. — Botany Dept. and Cell Research Inst.. Univ. of Texas, AUSTIN. Tex. 78712, U.S.A. a Mechanism of histone synthesis and function of histone variants in sperm development. Sphaerocarpos donnellii, S. texana (Hepaticae), Mytilus calif ornicus (Lamellibranchia). Rehnia spinosa (Katydidae, Orthoptera) 22 BLOCK, M. H. Ph.D.. M.D.. Prof. — Div. of Hematol., Univ. of Colorado, Med. Center. 4200 E. 9th Ave., DENVER, Colo. 80220, U.S.A. a The effect of total body radiation upon development, especially bloodforming tissues. Didclphys virginiana (Marsupialia) BLOM, E. Dr.med.vet. — State Veter. Serum Lab., Bulowsvej 27. 1870 COPENHAGEN V. Denmark a Studies on pathological conditions in the testis, epididymis and accessory sex glands. Bos taurus (Arfiodactyla) b The ultrastructure of normal and pathological sperm. Bos taurus (Arfiodactyla) (in collab- oration with A. BIRCH-ANDERSEN, State Serum Inst.) BLONDELET. J. Dr.en Med. — Lab. d'Embryol., Fac. de Med.. Univ. de Nancy, 31 rue Lionnois, 54 NANCY. France BLONDHEIM, Mrs. S. A. M.Sc. — Dept. of Entomol. and Venomous Anim., The Hebrew Univ., JERUSALEM, Israel BLOOM, S. E. Ph.D. — Dept. of Poultry Sci., New York State Coll. of Agric. at Cornell Univ., 210 Rice Hall, ITHACA, N.Y. 14850, U.S.A. a Cytochemistry of binucleated red blood cells in embryos and adults. Meleagris gallopavo (Aves) b Study of chromosomal anomalies in embryos. Gallus domesticus, Meleagris gallopavo (Aves) c Cytology of mitotic mutants as related to age and sex. Meleagris gallopavo (Aves) d Development of trisomic, triploid, and haploid embryos. Gallus domesticus (Aves) BLOUNT. R. F. Ph.D.. Prof. — Dept. of Anat.. Med. Branch, Univ. of Texas, GALVE- STON. Tex. 77550, U.S.A. a Morphological changes in kidney during development and changes with age. Mus musculus (Rodentia) BLUEMINK, J. G. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1. Uni- versiteitscentrum "De Uithof", UTRECHT, Netherlands a Electron microscopic investigation of cytokinesis during the first cleavage cycle. Am- bystoma mexicanum (Urodela) (in collaboration with P. D. NIEUWKOOP) b Electron microscopic investigation of cell-to-cell junctions in embryos between first cleavage and late neurula stage. Amby stoma mexicanum (Urodela) , Xenopus laevis (Anura) c Subcellular aspects of functional differentiation in the parotid gland. Rattus rattus (Rodentia) BLUNT, M. H. Ph.D. — Dept. of Agric. Biol., Univ. of New England, ARMIDALE. N.S.W. 2351, Austraha a Development of haemoglobins in the embryo. (Caprinae, Arfiodactyla) BLUNT, M. J. Ph.D., Prof. — School of Anat.. Univ. of New South Wales, P.O. Box 1. KENSINGTON, N.S.W. 2033. Australia a Myelination in developing optic nerve. Felis domesticus (Carnivora) b Development and function of neuroglia in optic nerve. Felis domesticus (Carnivora) BLUZAT, R. R. Dr.3erae cycle — Lab. de Zool., Fac. des Sci., Univ. de Paris, 91 ORSAY. France a Experimental study with ionizing radiations of development of the gonads. Leptinotarsa decemlineata (Coleoptera) b Structure and ultrastructure of germinal determinant in the egg. Leptinotarsa decemlineata (Coleoptera) c Experimental study with ionizing radiations in early embryogenesis. Leptinotarsa decem- lineata (Coleoptera) BOCKSTAHLER. L. Ph.D. — Arbeitsgr. Biochem. Embryol., Max-Planck-Inst. fur Zellbiol., Abt. Bauer, Melanchthonstr. 36, D 7400 TUBINGEN, W.Germany a Molecular biology of embryo. Paracentrotus lividus (Echinoidea) BOCZKOWSKA. Mrs. J. B.Sc. — Dept. of Histol. and Embryol.. Acad, of Med.. ul.Naru- towicza 60, E6D2, Poland a Histochemical studies on distribution and activity of acid phosphatase and beta-glucuronidase in the lung and the liver during embryogenesis. Xenopus laevis (Anura), Rattus norvegicus, Cavia cobaya (Rodentia) BODELET. B. — Lab. d'Embryol.. Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY. France BODEMER. C. W. Ph.D. — School of Med., Univ. of Washington, SEATTLE. Wash. 98105. U.S.A. a Electrophysiology of developing nervous system. Didelphys virginiana (Marsupialia) BODENSTEIN. D. Ph.D., Prof. — Dept. of Biol.. Univ. of Virginia, Gilmer Hall. CHAR- LOTTESVILLE. Va. 22903. U.S.A. • a Intergeneric grafts of organ discs. (Diptera) b The role of the prothoracic gland in postembryonic development. Periplaneta americana (Dictyopfera) BODMAN, Sister M. C. Ph.D., Prof. — Dept. of Oral Pathol.. School of Dent., Loyola Univ., 1757 W.Harrison St.. CHICAGO. 111. 60612, U.S.A. 23 a Ultracentrifugation separation of lysosomes in resorbing tadpole tails. Rana catesbeiana (Anura) b Lysosome activity in outer enamel epithelium of erupting molar (histochemical study). Ratfus nocvegicus (Rodentia) BOELL, E. J. Ph.D., D.Sc, Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. • a Changes in enzymatic activity and morphology of mitochondria in embryonic tissues during growth and differentiation. (Amphibia, Aves) h Effects of hormones on enzyme synthesis in specific target tissues of the developing embryo during tissue differentiation and regression BOFFI LUCARELLI, Mrs. A. M. Dr. — 1st. di Biol. Gener.. Fac. di Med., Univ. di Roma, Policlinico Umberto I, 00100 ROMA, Italy BOGATOVA (NIKANOROVA), Mrs. R. I. Cand.med.sci. — Inst, of Exper. Biol., Acad. of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. BOHN, H. Dr.rer.nat. — Zool. Inst, der Univ., Luisenstr. 14, 8000 MuNCHEN, W.Germany a Regeneration and transplantation experiments on limbs; polarity and gradient systems. Leucophaea maderae, Periplaneta americana (Dictyopteca) BOILLY, B. Dr.es Sci. — Lab. de Biol. Anim.. Fac. des Sci., B.P.36, 59 LILLE-Distribution, France a Morphogenesis in regeneration. (Polychaefa) h Origin of regeneration cells. (Polychaefa) c Factors of dedifferentiation, activation and differentiation of regeneration cells. (Annelida) BOLLUM, F. J. Dr. — Depts. of Microbiol, and Biochem., Med. Center, Univ. of Kentucky, LEXINGTON, Ky. 40506, U.S.A. a Analysis of the template activity of DNA during the terminal lens cell differentiation. Gallus domesticus (Aves) (in collaboration with S. P. MODAK) b Analysis of the primer activity of DNA during the terminal lens cell differentiation. Gallus domesticus (Aves) (in collaboration with S. P. MODAK) c Analysis of the physico-chemical properties of DNA in differentiating cells. Tritums viri- descens (Urodela), Gallus domesticus (Aves), Mus musculus, Rattus rattus (Rodentia), Homo sapiens (Primates) (in collaboration with S. P. MODAK) BOLOGNANI (FANTIN), Mrs. A. M. — 1st. di Anat. Comp., Univ. di Pavia, Piazza Botta 10. 27100 PAVIA, Italy a The integument of foot and mantle (histochemical and biochemical research). (Polyplaco- phora; Scaphopoda; Gastropoda; Lamellibranchia) b The glands associated with the reproductive tract (histochemical methods). Lymnaea stagnalis. (Pulmonata, Gastropoda) BOLOGNARI, A. Prof. — 1st. di Zool. e di Anat. Comp., Fac. di Sci., Univ. di Messina, Via dei Verdi 75, 98100 MESSINA. Italy a Biochemical aspects of yolk globules formed artificially by means of deoxyribonuclease. Sphaerechinus granulans, Patacentrotus lividus (Echinoidea) b Golgi apparatus in oocytes (electron microscopy). Sphaerechinus granulans, Pacacentrotus lividus (Echinoidea) BONDI. C. Dott.. Prof. — 1st. di Anat. Comp., Fac. di Sci., Univ. di Perugia, Via A. Pascoli, PERUGIA, Italy BONNER, J. T. Ph.D., Prof. — Dept. of Biol., Princeton Univ., PRINCETON. N.J. 08540. U.S.A. • a Problems of morphogenetic movements and differentiation. (Acrasiales) BONNY PILO. Dr. — Dept. of Zool.. Fac. of Sci., M.S. Univ. of Baroda, BARODA-2, India a Liver, spleen and lymph gland regeneration. (Reptilia; Aves) BONS. J. Dr.es Sci. — Lab. de Zool., Fac. des Sci. de Montpellicr, Place Eugene Bataillon, 34 MONTPELLIER, France a Embryonic development. Agama bibroni (Agamidae, Lacertilia) BONTING, S. L. Ph.D., Prof. — Dept. of Biochem., Univ. of Nijmegen, Kapittelweg 40, NIJMEGEN, Netherlands a Development of the rhodopsin cycle; rhodopsin. electroretinogram and morphology from birth till maturity. Canis domesticus (Carnivora) (in collaboration with F. J. M. DAEMEN) b Na-K activated ATPase activity of developing retina in normal animals and in animals with hereditary retinitis pigmentosa. Rattus norvegicus (Rodentia) (in collaboration with F. J. M. DAEMEN) BOOKHOUT. C. G. Ph.D., Prof. — Marine Lab., Duke Univ., BEAUFORT. N.C. 28516. and Dept. of Zool.. Duke Univ.. DURHAM. N.C. 27706, U.S.A. BOON (NIERMEYER), Mrs. E. K. M.Sc. — Zool. Lab.. State Univ. of Utrecht, Janskerk- hof 3, UTRECHT, Netherlands a Influence of some antibiotics on certain stages of development. Limnaea stagnalis (Gas tropoda) BOONE, M. A. Ph.D., Prof. — Poultry Sci. Dept., Clemson Univ.. CLEMSON. S.C. 29631, U.S.A. 24 a Ultrastructure of spermatozoa. Gallus domesticus, Meleagris gallopavo (Aves) b Effect of high ambient temperature on semen and egg production. Gallus domesticus (Aves) c Development of drug bio-assay system by growing embryos in beakers. Gallus domesticus (Aves) BOOTHROYD. B. Ph.D. — Histol. Dept., Fac. of Med., Univ. of Liverpool. LIVERPOOL, Lancashire, England BOPP, M. Dr.rer.nat., Prof. — Bot. Inst., Univ. Heidelberg, Hofmeisterweg 4, 69 HEIDEL- BERG, W.Germany a Crown-gall development and initiation. Bryophijllum daigremonfianum (Crassulaceae) b Development; morphogenesis of protonema. Funaria hygrometcica (Bryophyta) c Shoot growth and DNA synthesis BORGHESE, E. M.D., Dr.Biol.Sci., Prof. — 1st. di Anat. Topogr., Univ. di Napoli, Via L. Armanni 5, 80138 NAPOLI. Italia • a Culture in vitro of embryonic organs. Mus musculus (Rodentia) b Effect of ionizing radiations on embryonic development. (Mammalia) c Embryology of kidney. Mus musculus (Rodentia) BORISOV, I. N. Cand.biol.sci. — Chair of Histol. and Embryol., Archangelsk State Med. Inst., Av.P.Vinogradow 51, ARCHANGELSK, U.S.S.R. a Origin and histogenesis of cross-striated muscles. Lampetra fluviatilis (Agnatha), Torpedo ocellata, Scyllium canicula (Selachii), Huso huso, Acipenser giildenstadti (Chondrostei). Salmo salar, Coregonus lavaretus (Teleostei). Rana temporatia. Hynobius keysedingii (Amphibia), Lacerta saxicola. Natrix natrix (Reptilia). Gallus domesticus (Aves), Mus musculus, Sus domesticus (Mammalia) BOROJEVIC, R. D.E.S. — Lab. de Biol. Invert. Marins, Museum Natl. d'Hist. Nat. Paris, 57 rue Cuvier, PARIS Ve, France a Descriptive and experimental morphology, morphogenesis. (Porifera) BORSTEL. R. C. von Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. a Analysis of the template activity of DNA during the terminal lens cell differentiation. Gallus domesticus (Aves) (in collaboration with S. P. MODAK) BORSUK, Mrs. R. A. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. BOSCHKOW, D. K. M.Sc. — Inst, of Zool., Bulg. Acad, of Sci., bul. Ruski 1, SOFIA, Bulgaria BOSCHWITZ, Miss B. D. Ph.D. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERUSA- LEM, Israel a Seasonal changes in the parathyroid. Bu[o viridis (Anura) b Seasonal changes in the ultimobranchial body. Bu[o viridis (Anura) c Multiplication of motor end plates in the diaphragm of growing animals. Mus musculus (Rodentia) d Thyroid deficiency and metamorphosis. Pelobates spec, Hyla spec. (Anura) e Second metamorphosis: influence of prolactin on the water drive; influence of prolactin on the ultimobranchial body and its involvement in the water drive. Bufo viridis (Anura) BOSSHARD, N. U. Dipl.Natw. — Inst, fiir Genet.. Univ. des Saarlandes. 66 SAAR- BRUCKEN 11, W.Germany a Influence of chemical stimuli on gene activity. Galleria mellonella (Lepidoptera) BOSSY, J. G. M. M.D.. Prof. — Lab. d'Anat., Fac. de Med., 34 MONTPELLIER, France a Study of melanotic embryo of 15 mm V.C. Homo sapiens (Primates) b Mitotic index in the ependymal layer of the embryonic brain: topographic variations. Homo sapiens (Primates) c Development of the mucous lining of the auditory tube. Homo sapiens (Primates) d Myelinization of the dorsal root-spinal cord junction. Homo sapiens (Primates) e Development of neuroblasts grafted in the adult spinal cord. Rattus norvegicus (Rodentia) BOT, A. P. C. M.D. — Netherlands Central Inst, for Brain Research, IJdijk 28, AMSTER- DAM, Netherlands a Morpho-physiological correlations in the cerebral hemisphere during embryonic devel- opment, using seizures as a pathophysiological phenomenon. Gallus domesticus (Aves) b Morpho-physiological correlations between cellular activity and structural development in the embryonic celebral hemisphere. Gallus domesticus (Aves) BOTERENBROOD, Miss E. C Ph.D. — Hubrecht Lab. (Intern. Embryol. Inst.), Uppsala- laan 1, Universiteitscentrum "De Uithof", UTRECHT, Netherlands a Analysis of regional distribution of differentiation tendencies in the prosencephalic part of the neural plate. Ttitutus alpestris, Pleurodeles waltlii (Urodela) b Analysis of dorso-ventral polarity in mesoderm induction and endoderm differentiation. Ambystoma mexicanum (Urodela) (in collaboration with P. D. NIEUWKOOP) c Cinematographical study of normal cleavage pattern and gastrulation movement. Ambysto- ma mexicanum (Urodela), Xenopus laevis (Anura) (in collaboration with K. HARA) BOTTE, V. Vet.Dr. — 1st. di Zool. e Anat. Comp., Fac. di Sci., Univ. degli Studi, Piazza F. Marchetti, CAMERINO, Italy 25 BOUCK, G. B. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN. Conn. 06520, U.S.A. a Biochemistry and cytology of development. Fucus vesiculosus, F. spiralis (Phaeophyta) BOULEKBACHE, H. Lic.es Sci.. D.E.A. — Lab. d'Anat. Comp., Fac. des Sci.. 7 Quai Saint-Bernard, 75 PARIS 5e, France a The relationship between glycolytic enzymes and respiration in early development. Salmo irideus (Teleostei) h Qualitative changes in the isoenzymes of L.D.H., aldolase and glucose-6-phosphate dehy- drogenase during development. Salmo irideus (Teleostei) c Electron microscopic study of mitochondria and yolk platelets in early development. Salmo irideus (Teleostei) BOUVET, J. L. Dr. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE. France a Experimental studies on the development of the paired fins. Salmo trutta fario (Teleostei) BOVBJERG (BLANCHARD), Mrs. A. M. Ph.D. — Dept. of Zool., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Skin grafting: factors affecting graft rejection and the nature of the immune reaction. Rana pipiens, R. catesbeiana (Anura) h Development of skin, in larvae metamorphosing normally and with exogenous thyroid hormone. Rana pipiens (Anura) BOVING, B. G. M.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. Uni- versity Parkway, BALTIMORE, Md. 21210. U.S.A. • a Blastocyst spacing, orientation and implantation mechanisms. Oryctolagus cuniculus (Lago- morpha) h Relation of trophoblast invasion to blood vessels underlying uterine epithelium, and the anatomical, mechanical and chemical basis for it. Oryctolagus cuniculus (Lagomorpha) c Identification and function of non-cellular blastocyst coverings. Oryctolagus cuniculus (Lagomorpha) d Structure and function of trophoblast knobs. Oryctolagus cuniculus (Lagomorpha) BOWEN. Mrs. S. T. Ph.D.. Prof. — Dept. of Cell and Molec. Biol., School of Nat. Sci., San Francisco State Coll.. SAN FRANCISCO, Calif. 94132, U.S.A. a Changes in hemoglobin composition in development: effect of environment on hemoglobin induction in a clone of genetically identical parthenogenetic females. Ariemia salina (Anostraca, Crustacea) BOYD, J. D. t D.Sc, M.D., Prof. — Anat. School, Univ. of Cambridge, CAMBRIDGE. England (deceased) BOYDE, A. Ph.D. — Anat. Dept., Univ. Coll. London, Gower St., LONDON W.C.I, Eng- land a Structure and development of hard tissues; descriptive morphology using electron micro- scopy, scanning electron microscopy, scanning probe X-ray microanalysis. (Mammalia) BOYDEN, E. A. Ph.D., Prof. (Emer.) — Dept. of Biol. Struct., Med. School, Univ. of Washington, SEATTLE. Wash. 98105, U.S.A. BRACHET, J. L. A. M.D., D.Sc, Prof. — Lab. de Morphol. Anim.. Univ. libre de Bruxelles. 67. rue des Chevaux. RHODE-ST-GENESE, Brabant, Belgium • a Studies on the metabolism of lethal hybrids. (Echinoidea; Amphibia) h Origin, nature and role of cytoplasmic DNA. Xenopus laevis (Anura) c DNA synthesis during maturation. (Echinoidea; Amphibia) d Effects of cortical lesions on DNA, RNA and protein sythesis. Xenopus laevis, Rana temporaria (Anura) e Effects of "conditioned medium" from dissociated morulae on development and nucleic acid synthesis. Paracentrotus lividus (Echinoidea) BRADBUR, C. Ph.D. — Biochem Dept.. School of Med.. Univ. of Virginia. CHARLOT- TESVILLE. Va. 22901, U.S.A. BRADEN, A. W. H. Ph.D. — Div. of Anim. Physiol., C.S.I.R.O., Ian Clunies Ross Anim. Res. Lab.. Great Western Highway. (P.O.Box 144, Parramatta). PROSPECT. N.S.W. 2150, Austraha a Fertilization. Ovis spec. (Actiodacfyla) h Prenatal mortality. Ovis spec. (Artiodactyla) BRADLEY, M. O. B.A. — Dept. of Biol. Sci., Stanford Univ.. STANFORD. Calif. 94305. U.S.A. a Developmental profile of arginase specific activity in very early and later embryonic Uver and kidney. Mus musculus (Rodentia) BRAHMA, S. K. D.Phil., Ph.D. — Dept. of Anat. and Embryol.. State Univ. of Utrecht. Janskerkhof 3A. UTRECHT, Netherlands • a Immunochemical studies of lens proteins. (Vertebcata) (in collaboration with W. J. van DOORENMAALEN) b Autoradiographic and cytochemical studies of tissue differentiation. (Vertebcata) BRAMBELL, F. W. R. Ph.D., D.Sc, Prof. — address unknown • 26 BRANDLE. K. A. Dr.rer.nat. — Zool. Inst, der Univ.. Kaiserstr. 2, 75 KARLSRUHE. W.Germany a Preparation and rearing of animals with six or more limbs for research on modes of locomotion. Ambystoma spec. (Ucodela) b Xenoplastic transplantation of neural plates for the study of relations between central nervous system and behaviour. (Amphibia) c Preparation and rearing of animals with two heads connected in series (tandem heads) for study of relations between central nervous system and doubled sense organs. Am- bystoma mexicanum (Ucodela) BRANDT, W. H. Ph.D., Prof. — Dept. of Bot. and Plant Pathol., Oregon State Univ.. CORVALLIS, Ore. 97331, U.S.A. BRAUM, E. Dr. — Inst, fur Hydrobiol. und Fisch.wiss., Univ. Hamburg, Olbersweg 24, 2 HAMBURG 50, W.Germany a Developmental problems of eggs in the mud-water layers of lakes (prelminary experiments on incubation of exposed egg samples in a deep lake). Coregonus wartmanni (Teleostei) b Malformations observed in newly hatched larvae. Coregonus wartmanni (Teleostei) c The influence of temperature, oxygen pressure and water flow on eggs and larvae. Esox lucius, Coregonus spp. (Teleostei) BRAVERMAN, M. H. Ph.D. — Cell and Radiat. Biol. Labs., Allegheny Gen. Hosp., 320 East North Ave., PITTSBURGH, Pa. 15212, U.S.A. a Systems analysis of colony pattern and computer simulation of colony growth. Po- dococyne carnea (Hydroidea) b Macromolecular control of the initiation of lens morphogenesis and lens protein synthesis in vitro. Gallus domesticus (Aves) BRESCIANI, J. M.Sc. — Inst, of Comp. Anat., Univ. of Copenhagen, Universitetsparken 15, COPENHAGEN 0, Denmark BREUCKER, Miss H. Dr. — Anat. Inst, der Univ. Hamburg, Martinistr. 52, 2000 HAM- BURG-Eppendorf, W.Germany a Electron miscroscopic studies of spermatozoa and spermatogenesis. Ornithodorus moubafa (Argasidae. Acarina), Graphidostreptus spec. (Diplopoda) BREUGEL, F. M. A. van — Dept. of Genet., Univ. of Leiden, Kaiserstr. 63, LEIDEN, Netherlands a Cytological differentiation in white-mottled mutants. Drosophila melanogaster, D. hydei (Diptera) h Chromosomal puffs in lethal mutants. Drosophila melanogaster, D. hydei (Diptera) BRICK, I. Ph.D., Prof. — Dept. of Biol., Grad. School of Arts and Sci., New York Univ., Washington Square, NEW YORK, N.Y. 10003, U.SA. a Tissue affinities in developing melanophores studied by time-lapse photography. Ambystoma mexicanum (Urodela) b Genetic control of cell surfaces in the development of pigment pattern. Ambystoma mexi- canum (Urodela) c Analysis of melanophore determination at the molecular level. Ambystoma mexicanum (Urodela) d Development of the eye, optic nerve, and optic tectum in reciprocal transplants of eye rudiments between embryos of varieties with and without eyes. Astyanax mexicanus (syn. Anoptichthyes jordani) (Teleostei) e The surface of cells in different presumptive regions during gastrulation, studied by means of cell electrophoresis. Rana pipiens (Anura) BRIDE, Miss J. Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat.. Fac. des Sci., Place Marechal Leclerc, 25 BESANgON, France a Developpement embryonnaire de la glande uropygienne. (Aves) (en collaboration avec L. GOMOT) BRIDE (VUILLET). Mrs. M. Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal Leclerc, 25 BESANCON. France Recherches sur le developpement in vivo et in vitro du coeur. Rana temporaria, Xenopus laevis (Anura) (en collaboration avec L. GOMOT) BRIEGLEB, W. Dr.rer.nat. — Inst, fur Flugmedizin der DFVLR, Kolnerstr. 70. 532 BAD GODESBERG, W.Germany a Einfluss von Licht und hoher Temperatur auf die Ontogenese einer neotenen Art aus einem Hohlenbiotop. Proteus anguinus (Proteidea, Urodela) h The influence of simulated weightlessness on development. Tribolium castaneum (Co- teoptera) c The influence of simulated weightlessness by rotation on the early development (polariza- tion). Ascaris (Nematoda). (Anura) (in collaboration with G. TEUCHERT) d The influence of simulated weightlessness (by submersion) on metamorphosis. (Anura) (in collaboration with G. TEUCHERT) BRIEN, P. L. Dr.Sc.Zool., Prof. Hon. — Inst, de Zool. Torley-Rousseau, Univ. libre de Bruxelles, 50 Av. F.D. Roosevelt, BRUXELLES, Belgium • 27 a BRIGGS, R. W. Ph.D., Prof. — Dept. of Zool.. Indiana Univ., BLOOMINGTON. Ind 47401, U.S.A. • BRINCK-JOHNSEN, T. Ph.D. — Dept. of Pathol., Dartmouth Med. School, HANOVER. N.H. 03755, U.S.A. a Placental and fetal steroidogenesis. Dasypus nouemcinctus (Edentata) b Placental estrogens. Sus scrofa (Artiodactyla) c Estrogens in pregnancy. Felis cafus (Carnivora) BRINSTER, R. L. V.M.D., Ph. D., Prof. — Lab. of Reprod. Physiol.. School of Vet. Med.. Univ. of Pennsylvania, 530 Lippincott Bldg., 25th & Locust Sts., PHILADELPHIA, Pa. 19103. U.S.A. a Fertilization; physiology and biochemistry of ova and early cleavage stages. (Mammalia) BRODY. S. Ph.D. — Dept. of Biol.. Univ. of California. San Diego, P.O. Box 109. LA JOLLA, Calif. 92037, U.S.A. a Developmental genetics. Neurospora spec. (Ascomycetes) b Biochemical mechanisms in morphogenesis. BR0NDSTED, H. V. Dr.Phil.. Prof. (Emer.) — Stockholmsgade 23, 2100 COPENHAGEN, Denmark • a Physiology and regeneration. (Porifera; Turbellaria) b Embryology. Mus musculus (Rodenfia) BROOKBANK. J. W. Ph.D.. Prof. — Dept. of Zool., Univ. of Florida, GAINESVILLE. Fla. 32601. U.S.A. a DNA synthesis in interordinal hybrids, fertilization through pluteus. Strong ylocentrotus purpuratus x Dendraster excentricus (Echinoidea) b Entoderm antigens of plutei. Lytechinus variegatus (Echinoidea) BROOKS (LAWRENCE). Mrs. B. — Histol. Dept.. Fac. of Med., Univ. of Liverpool, LIVERPOOL, Lancashire. England BROOKS, Miss M. A. Ph.D.. Prof. — Dept. of Entomol., Fish, and Wildlife. Univ. of Minnesota. ST. PAUL. Minn. 55101. U.S.A. a Tissue differentiation, studied in cell culture, with respect to developmental potential as correlated with stages in the life cycle. Malacosoma dissfria (Lepidoptera) b The effect of intracellular symbiotic microorganisms on vitellogenesis and embryonic devel- opment of insects. Blattella germanica, Periplaneta americana (Dictyoptera) BROSEMER. R. W. Ph.D.. Prof. — Dept. of Chem.. Washington State Univ.. PULLMAN. Wash. 99163. U.S.A. a The morphological and enzymic development of flight muscle. Apis mellifera, Bombus spec. (Hymenoptera), Sarcophaga bullata (Dipteca) BROUWER, P. J. Med.Drs. — Dept. of Anat. and Embryol., Free Univ. of Brussels, 97 rue aux Laines, BRUXELLES. Belgium BROWN, D. D. M.D. — Dept. of Embryol.. Carnegie Inst, of Washington, 115 W. Uni- versity Parkway. BALTIMORE, Md. 21210. U.S.A. — Dept. of Biol., Johns Hopkins Univ., Charles & 34th Sts.. BALTIMORE, Md. 21218. U.S.A. • a Biochemical studies of early development. Rana pipiens, Xenopus laevis (Anura), Hyalo' phora cecropia and other spp. (Lepidoptera) (in collaboration with L. P. GAGE. R. G. ROEDER and Y. SUZUKI) BROWN. E. H. Ph.D. — Dept. of Zool.. Univ. of Illinois. URBANA, 111. 61801. U.S.A. a Genetic and cytological aspects of oogenesis. Drosophila melanogaster (Diptera) BROWN. J. A. M. Ph.D. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. 46556, U.S.A. a Developmental physiology, particularly mcristem metabolism in floral morphogenesis. Arab- idopsis thaliana (Cruciferae) b Floral induction as affected by deoxyriboside base analogues and photoperiod. Arabidopsis thaliana (Cruciferae) c Photomorphogenic action spectra and threshold flux densities. Arabidopsis thaliana (Cruci- ferae) d Pupal development and adult fertility as affected by deoxyriboside base analogues applied topically at onset of pupation. (Nematocera, Diptera) (in collaboration with G. B. CRAIG) BROWN, J. W. Ph.D., Prof. — Dept. of Anat., Univ. of Alabama Med. Center. 1919 Seventh Ave. South. BIRMINGHAM. Ala. 35233. U.S.A. BRUCE, L. Fil.Kand. — Zoophysiol. Inst.. Univ. of Lund, Helgonavagen 3. 223 62 LUND. Sweden a Biochemical and cytochemical analysis of intracellular yolk granules in early blastoderms with special regard to yolk DNA. Gallus domesticus (Aves) BRUGAL, G. J. Y. Cherch. 3e Cycle — Lab. de Zool.. Fac. des Sci. de Grenoble. Cedex 53, 38 GRENOBLE. France a Etude autoradiographique du cycle mitotique et de ses variations sous Taction des facteurs externes (temperature, thyroxine) a differents stades du developpement. Pleurodeles waltlii (Urodela) 28 BRUMMETT, Miss A. R. Ph.D. — Dept. of Biol., Oberlin Coll.. OBERLIN, Ohio 44074, U.S.A. a Experimental analysis of morphogenetic movements and differentiation in the early gastrula by deletion-explantation techniques. Fundulus heteroclitus (Teleostei) b Analysis of biochemical difference in various presumptive regions of the early gastrula. Fundulus heteroclitus (Teleostei) c Factors influencing graft vs. host antagonism in anterior shield grafts. Fundulus heteroclitus ( Teleostei) d Electron microscopical studies on developing embryos. Fundulus heteroclitus (Teleostei) BRUN, J. L. Dr.es Sci. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 No- vembre 1918, 69 VILLEURBANNE, France a Adaptation aux temperatures clevees. Caenorhabditis elegans (Nematoda) BRUNO, R. Dr. — Inst, of Biochem., Univ. of Turin, Via Giolitti 34, 10123 TORINO, Italy a Induction by prolactin of thyroid activation in larvae at advanced metamorphic stages. Buh bufo (Anura) (in collaboration with Miss A. GUARDABASSI, M. OLIVERO, M. T. RINAUDO, E. CAMPANTICO and C. GIUNTA) BRUNST. V. V. Dr.biol.Sc. — Roswell Park Mem. Inst.. 666 Elm St., BUFFALO, N.Y. 14203, U.S.A. a Experimental embryology. Siredon mexicanum (Urodela) b Regeneration. Siredon mexicanum (Urodela) c Chromosomes. Siredon mexicanum (Urodela) d Tumors. Siredon mexicanum (Urodela) e Radation effects. Siredon mexicanum (Urodela) i Congenital abnormalities. (Urodela) BRUST, R. A. Ph.D., Prof. — Dept. of Entomol., Fac. of Agric, Univ. of Manitoba. WIN- NIPEG 19, Manitoba, Canada a The influence of thermal stress on development. Aedes spp. (Culicidae, Diptera) h Survey on the occurrence of autogeny in subarctic species (field and laboratory obser- vations). Aedes spp. (Culicidae, Diptera) c Effect of mermithed parasitism on larval development. Aedes spp. (Culicidae, Diptera) d Effect of photoperiod and temperature on the induction and termination of diapause in larvae and embryos. Wyeomyia smithii, Aedes atropalpus (Culicidae, Diptera) BRYAN. J. H. D. Ph.D.. Prof. — Dept. of Zool., Univ. of Georgia, ATHENS, Ga. 30601, U.S.A. a Cytochemical studies of gamete formation. Mus musculus (Rodentia) b Nucleic acid-protein ratios during growth and differentiation. Mus musculus (Rodentia) c Cytochemical studies of nuclear proteins in differentiating and adult tissues. Mus musculus (Rodentia) d Studies of differentiation of spermatozoa in mutant animals (light- and electron microscope studies). Mus musculus (Rodentia) BRYDEN, M. M. B.V.Sc, Ph.D. — Dept. of Anat., Vet. Coll., Cornell Univ., ITHACA, N.Y. 14850, U.S.A. a Prenatal and postnatal development. Mirounga leonina (Pinnipedia) h General embryology. Ovis aries (Artiodactyla) BUCHANAN, G. D. Ph.D.. Prof. — Dept. of Anat., Med. Coll. of Ohio. P.O.Box 6190, TOLEDO. Ohio 43614, U.S.A. a Reproductive physiology, including histology and histochemistry of the reproductive tract. Mustela furo (Carnivora) BUDEGUER de ATENOR, Mrs. M. S. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Chemical factors involved in fertilization: oviducal origin of the diffusible factor. Bufo arenarum (Anura) BUEHR, Miss M. L. Ph.D. — Dept. of Zool., The University, GLASGOW W.2., Scotland, U.K. a Primordial germ cells. Xenopus laevis (Anura) BUGGE, J. M.Sc. — Dept. of Anat., Royal Dental Coll., AARHUS. Denmark a Development of the stapedial artery. (Myomorpha, Rodentia) b Development of the cerebral, pericentricular vasculature. Mus musculus (Rodentia) c Malformations of the vascular system of brain and head. Mus musculus, Rattus norvegicus (Rodentia) (in collaboration with P. A. KNUDSEN) BUHLER. R. — Zool.-Vergl. Anat. Inst.. Univ. Ziirich. Kiinstlergasse 16, CH-8006 ZURICH, Switzerland a Peptides and free amino acids during development (separation by ion-exchange chromato- graphy). Drosophila melanogaster (Diptera) BULLIfiRE, D. Dr. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53. 38 GRENOBLE. France a The regeneration and factors of morphogenesis in the larval leg. Blabera craniifer (Dicty- optera) 29 b Regeneration in the embryonic leg. Blabera craniifer (Dictyoptera) BULLIERE (CHALLANDE) , Mrs. F. Dr.spec. — Lab. de Zool., Fac. des Sci. de Grenoble. Cedex 53, 38 GRENOBLE, France a Embryonic development and mechanisms of embryonic moults. Blabera craniifer (Dicty- optera) b Morphological and ultrastructural analysis of organogenesis by means of in vitro culture techniques. Blabera craniifer (Dictyoptera) BULMER, D. M.D. — Chair of Human Morphology, Univ. of Southampton, SOUTHAMP- TON, England a Cytochemistry of developing female genital tract. Various spp. (Mammalia) b Cytochemistry of placenta. (Rodentia) BULSIEWICZ, Miss H. M.A. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19 Rokitnica, ZABRZE 8, Poland a Karyology of congenital malformations. Homo sapiens (Primates) BUfJO, W. M.D. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de Qinicas, MONTE- VIDEO, Uruguay a Regulation of cochlear input in the developing animal. Cavia cobaya (Rodentia) BURDA (WILSON), Mrs. D. J. Ph.D. — Dept. of Anat, School of Med., Stanford Univ., STANFORD, Calif. 94305 U.S.A. a Development and experimental modification of cerebrovascular system. Gallus domesticus (Aves) b Early growth and differentiation of brain. Gallus domesticus (Aves) BURDI, A. R. Ph.D. — Dept. of Anat., Med. School, Univ. of Michigan, East Med. Bldg . ANN ARBOR, Mich. 48104, U.S.A. BURDICK, M. L. Ph.D. — Dept. of Biol. Sci., Florida State Univ., TALLAHASSEE, Fla. 32306, U.S.A. a Study of the cellular specificities responsible for controlling morphogenetic movements, using the reaggregation of dissociated cells as a test system. Gallus domesticus (Aves), Mus musculus (Rodentia) BURDON-JONES, C. Ph.D., Prof. — Dept. of Zool., School of Biol. Sci., Univ. Coll. of Townsville, P.O.Box 999, TOWNSVILLE, Qld., 4810 Australia • a Development and regeneration. Rhabdopleura normani, Cephalodiscus spec, and other spp. (Pterobranchia, Hemichordata) BURGESS, Miss A. M. C. Ph.D. — Dept. of Anat., London Hosp. Med. Coll., Turner St., LONDON E.l, England a RNA synthesis in dedifferentiating and redifferentiating regenerating tissues. Xenopus laevis, Ambystoma spec. (Amphibia) h Somite morphogenesis. Xenopus laevis (Anura) BURIGHEL, P. Dr.biol.sci. — 1st. di Biol. Anim., Fac. di Sci., Via Loredan 10. 35100 PADOVA, Italy a Asexual reproduction. Botryllus schlosseri, Botrylloides leachi (Ascidiae) h Differentiation of digestive tract. Botryllus schlosseri, Botrylloides leachi (Ascidiae) BURKART, T. Dipl.Natw. — Inst, fur Genet., Univ. des Saarlandes, 66 SAARBRUCKEN 11, W.Germany a Role of electrolytes in limb regeneration and metamorphosis. Triturus cristatus (Urodela), Xenopus laevis (Anura) BURNS, R. K. Ph.D. — Bridgewater Coll., BRIDGEWATER, Va. 22812, U.S.A. • BURNSIDE, Miss M. B. Ph.D. — Biol. Lab., Harvard Univ., CAMBRIDGE, Mass. 02138, U.S.A. a Incorporation of tritiated polysaccharide precursors into the cell surface of amoebae grown in suspension culture as studied by biochemical techniques and electron microscopic radio- autography. Dictyostelium discoideum (Acrasiales) h Investigation of the role of microtubules in the maintenance and production of cell shape in embryonic columnar epithelia. Taricha torosa (Urodela), Gallus domesticus (Aves) BURTON. A. L. M.D., Prof. — Dept. of Anat., The Univ. of Texas Med. School at San Antonio, 7703 Floyd Curl Drive, SAN ANTONIO, Tex. 78229, U.S.A. a Development of mast cells in connective tissue of embryonic skin. Mus norvegicus albinus (Rodentia) BUSS, E. G. Ph.D., Prof. — Dept. of Poultry Sci., The Pennsylvania State Univ., 105 Weaver Bldg., UNIVERSITY PARK, Pa. 16802, U.S.A. BUTLER, E. G. Ph.D., D.Sc, Prof. (Emer.) — Dept. of Biol., Princeton Univ., PRIN- CETON, N.J. 08540. 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. Ambystoma punctatum, A. opacum (Urodela) b Effects of ultraviolet radiation on limb development and supernumerary limb regeneration. (Urodela) c Problems of polarity in the limb; regeneration after reversal of the proximo-distal axis. (Urodela) 30 d Study of epidermal hyperplasia. (Urodela; Mammalia) e Spinal cord reconstitution after ablation. (Urodela) BUTLER, H. M.D., B.Chir. — Dept. of Anat., Univ. of Saskatchewan, SASKATOON, Sask., Canada a Reproductive cycle, implantation, placentation and early embryology. Galago senegalensis senegalensis (Lemuroidea, Primates) BUTLER, W. L. Ph.D.. Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037, U.S.A. a Mechanism of phytochrome action in development. (Plantae) b Photobiology of development. (Algae) BUTROS, J. M. Ph.D., Prof. — Biol. Dept., American Univ. of Beirut, BEIRUT, Lebanon • a Promoting action of RNA from embryonic organs on differentiation of fragments of early blastoderms. Gallus domesticus (Aues) h Entry and action of RNA on protein synthesis. Lytechinus pictus (Echinoidea) c Action of stimulants and depressants on development of the heart primordium in vitro. Gallus domesticus (Aves) BUTTERWORTH, F. M. Ph.D. — Dept. of Biol., Oakland Univ., ROCHESTER, Mich. 48063. U.S.A. a The hormonal and genetic control of development of the adipose tissue on the cellular and biochemical level (microsurgical, transplantation, cytological and biochemical techniques). Drosophila melanogaster (Diptera) BUTZEL, H. M.. Jr. Ph.D.. Prof. — Dept. of Biol. Sci., Union College, SCHENECFADY, N.Y. 12308, U.S.A. a Developmental genetics of mating type. Paramaecium aurelia (Ciliata) h Organelle development: study of the role of organelles in teratogenesis of single and double cells. Paramaecium aurelia (Ciliata) BUZNIKOV, G. A. Dr.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26. MOSCOW B-133, U.S.S.R. a The role of neurotransmitters (acetylcholine, serotonin, catecholamines) in early embryo- genesis. Strong ylocentrotus drobachiensis, S. nudus, S. intermedius, Paracentrotus lividus, Arbacia lixula, Sphaerechinus granulans ( Echinoidea), Rana temporaria, Buf a bu^o (Anura) (in collaboration with Mrs. L. N. MARKOVA) BYCZKOWSKA (SMYK), Mrs. W. Dr. — Dept. of Comp. Anat.. Jagellonian Univ., ul. Krupnicza 50, KRAKOW, Poland a Electron microscopic studies of spermiogenesis. Tetrodontophora bielanensis (Collembola) BYLINA (KUf^SKA). Mrs. A. mgr.Sci. — Dept. of Histol, and Embryol.. Fac. of Vet. Med., Warsaw Agricult. Univ.. Grochowska 272. WARSZAWA. Poland a Histochemical studies on differentiation of metanephros. Sus domesticus (Artiodactyla) BYTINSKI-SALZ. H. Ph.D., Prof. — Dept. of Zool., Tel-Aviv Univ.. 155 Herzl St., TEL-AVIV, Israel a Hormonal influences on melanophore behavior in tadpoles. Rana spec, Pelobates spec. (Anura) b Species specificity of different larvae tested by xenoplastic transplantation of hypophysis. Pelobates spec, Xenopus spec, Bufo spec, Rana spec, Bombina spec, Hyla spec. (Anura), Pleurodeles spec, Triton spec, Ambystoma spec. (Urodela) CAHN, R. D. Dr. — Dept. of Zool., Univ. of Washington, SEATTLE, Wash. 98105, U.S.A. CAIRNS, J. M. Ph.D. — Springville Labs., Roswell Park Mem. Inst., SPRINGVILLE, N.Y. 14141, U.S.A. CALLEBAUT. M. E. M.D. — Lab. of Anat. and Embryol.. State Univ. Center. Groenen- borgerlaan 171. ANTWERPEN. Belgium a Early development. Gallus domesticus, Coturnix coturnix (Aves) b ^H-Uridine and ^H-thymidine incorporation in germ cells. Coturnix coturnix (Aves) CAMBAR. R. Dr.. Prof. — Lab. de Biol. Anim., Fac des Sci. de Bordeaux. 351 Cours de la Liberation, 33 TALENCE, France a Etude descriptive et experimentale de la morphogenese du mesonephros. Rana spec, Alytes spec, Discoglossus spec. Xenopus spec. (Anura) h Etude experimentale de la morphogenese du tube digestif et des glandes annexes. (Anura) c Involution ou transformation de I'appareil excreteur pendant la metamorphose. (Anura) d Rapports entre I'appareil genital et I'appareil excreteur. (Anura) e Recherches descriptives sur le developpement. Gambusia spec. (Teleostei) f Ultrastructure du pronephros et du mesonephros. (Anura) g Differenciation sexuelle. (Anura) CAMENZIND. R. Dr.scnat. — Dept. of Zool.. Swiss Federal Inst, of Technol., Universitat- str. 2. 8006 ZURICH. Switzerland a Morphology, physiology and cytology of paedogenetic-bisexual reproduction cycle. He- teropeza pygmaea (= Oligarces paradoxus), Tekomyia populi; Mycophila spec. (Itonididae = Cecidomyiidae. Diptera) 31 CAMERON, I L. Ph.D., Prof. — Dept. of Anat.. The Univ. of Texas Med. School at San Antonio. 7703 Floyd Curl Drive. SAN ANTONIO, Tex. 78229. U.S.A. a Synchronous cell differentiation. Tetrahymena vorax (Ciliata) b Cell proliferation and differentiation. Gallus gallus (Aves) c Cell homing. Gallus gallus (Aves) d Patterns in development. Gallus gallus (Aves) CAMOSSO, Miss M. E. Sc.D. — Inst, of Human Anat.. Fac. of Med.. Univ. of Bari, Poh- clinico. 70124 BARI, Italy a Analysis of the morphogenesis of the wing. Gallus domesticus (Aves) h Nerve patterns in experimentally duplicated limbs. Gallus domesticus (Aves) CAMPBELL (GIBSON), Mrs. J. A. B.Sc.(Hons.) — Dept. of Cell Biol., Univ. of Glasgow, GLASGOVv^ W.2, Scotland, U.K.. a Studies of the formation of cell adhesions, using cultured cell lines and embryonic cells, in reaggregation and dispersal experiments. CAMPANTICO. E. Dr. — Inst, of exp. Embryol., Univ. of Turin, Via Giolitti 34. 10123 TORINO, Italy a Induction by prolactin of thyroid activation in larvae at advanced metamorphic stages. Bufo bufo (Anura) (in collaboration with R. BRUNO, M. OLIVERO, M. T. RINAUDO, C GIUNTA and A. GUARDABASSI) CAMPBELL, J. C. Ph.D. — M.R.C. Epigenet. Research Group, Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland. U.K. a Antigenic studies of lens regeneration. Xenopus laevis, Triturus alpestris (Amphibia) (in collaboration with D. E. S. TRUMAN) b Regulatory mechanisms in lens regeneration. Xenopus laevis (Anura) c Metabolism (immunochemistry) and regulatory mechanisms in lens development. Xenopus laevis (Anura), Gallus domesticus (Aves) (in collaboration with Mrs. R. M. CLAYTON and D. E. S. TRUMAN) d Studies of mutants affecting the eye and lens. Mus musculus (Rodentia) (in collaboration with Mrs. R. M. CLAYTON) e Immunochemical studies of retina and eye-cup. (Amphibia) (in collaboration with Mrs. R. M. CLAYTON) CAMPENHOUT, E. van Dr., Prof. — Inst. d'Anat., Univ. de Louvain, 12 Minderbroeder- str., LOUVAIN, Belgium • CANDIOLLO. L. Lib.Doc. — 1st. di Anat. Umana Norm, della Univ., Fac. Med. e Chir., Corso M.D'Azeglio 52, 10126 TORINO, Italy CANNATA, F. — Cat. di Istol. ed Embriol.. Fac. di Sci., Univ. di Messina, Via dei Verdi 75, 98100 MESSINA, Italy a Structural and cytochemical aspects of the nucleolar apparatus. Astropecten aurantiacus ( Asteroidea) . Ophiomyxa pentagona (Ophiuroidea), Stichopus regalis (Holothuroidea) , Doricidaris papillata (Echinoidea) b Formation of yolk globules. Astropecten aurantiacus (Asteroidea), Ophiomyxa pentagona (Ophiuroidea), Stichopus regalis (Holothuroidea), Dorocidaris papillata (Echinoidea) CANTELL, C.-E. Fil.hc. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Larval development. ( Heteronemertini, Nemertea) CANTING. D. M.D. — Dept. of Anat.. Univ. of Turin. Corso M.D'Azeglio 52, 10126 TORINO. Italy a The development of Auerbach's and Meissner's plexus (silver staining, histochemistry, electron microscopy). Oryctolagus cuniculus ( Lagomorpha) , Cavia cobaya, Rattus nor- vegicus (Rodentia) h The development of Remak's ganglion (histochemistry and electron microscopy of devel- oping neuroblasts and synapses.) Gallus domesticus (Aves) c The development of sympathetic neurons and neural connections in the autonomic nervous system (electron microscopy, tracer studies). Gallus domesticus (Aves) CAPANNA, E. Dott.Sci.Nat. — 1st. di Anat. Comp. "Battista Grassi", Fac. di Sci., Univ. di Roma, Via A. Borelli 50, 00161 ROMA, Italy CAPKOVA (HRUBA), Mrs. A. M.D. — Embryol. Lab., Inst, for the Care of Mother and Child, nabr. K. Marxe 157, PRAHA-Podoli, Czechoslovakia CAPUANO. G. — Lab. d'Anat. Norm., Fac. Mixte de Med. et de Pharm. de Rouen, 41 rue St. Girardin. 76 ROUEN, France CARELL, E. F. Ph.D. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH. Pa. 15213, U.S.A. a Effect of light and chemicals on the development of chloroplasts. Euglena gracilis (Euglen- ophyceae) CARINCI. P. M.D.. Prof. — Inst, of Histol. and Gen. Embryol.. Univ. of Bologna. Via Belmeloro 8, BOLOGNA. Italy CARLSON, B. M. M.D., Ph.D. — Dept. of Anat., Med. School, Univ. of Michigan, 4565 East Med. Bldg., ANN ARBOR, Mich. 48104, U.S.A. CARMONA DE UZCATEGUI, Mrs. M. L. — Cat. de Embriol., Fac. de Med., Univ. de Los Andes, MfiRIDA, Venezuela 32 CARR, D. H. Ph.D., Prof. — Dept. of Anat., Fac. of Med., McMaster Univ., HAMILTON, Ont., Canada a Chromosome abnormalities and development. Homo sapiens (Primates) CASPARI E W Ph.D., Prof. — Dept. of Biol., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER, N.Y. 14627, U.S.A. • CASSAGNE-MfiJEAN, Mrs. F. Dr.es Sci. — Lab. de Zool., Fac. des Sci. de Montpellier, Place Eugene Bataillon, 34 MONTPELLIER, France a Embryonic and post-embryonic development and metamorphosis. Arrenurus spec. (Hy- drachnellae, Acarina, Arachnida) CASTANEDA, M. M.D. — Dept. of Developm. Biol., Div. of Biol., Calif. Inst, of Technol., PASADENA. Calif. 91109, U.S.A. CASTELLANI (CERESA), Mrs. L. Dr.biol.sci. — Cat. di Embriol. e Morfol. Sperim., Univ. di Milano, Via Celoria 10, MILANO, Italy CASTIGLI (PITTOTTI), Mrs. M. Dott., Prof. — 1st. di Zool. Gen., Fac. di Sci. Agraria, Univ. di Perugia, S. Pietro, PERUGIA, Italy CASTON J. D. Ph.D — Dept. of Anat., Developm. Biol. Center, Western Reserve Univ. School of Med., 2127 Cornell Rd., CLEVELAND, Ohio 44106, U.S.A. a Nucleic acids and protein synthesis during development ( ribosomes ). i?ana pipiens, Xenopus laevis (Anura) CASTRO-ROMERO, J. M. Ph.D., M.D., Prof. — Dept. de Anat. y Embriol., Fac. de Med., Univ. de Salamanca, SALAMANCA, Spain GATHER, J. N. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104,' U.S.A. a The differentiation of the shell gland. Ilyanassa obsoleta and other Gastropoda and Lamellibranchia (Mollusca) h Cellular interactions. (Annelida, Mollusca and other Spiralia) CAUNA N M.D., D.Sc, Prof. — Dept. of Anat. and Cell Biol., School of Med., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a Development of peripheral receptor organs (neurohistological, histochemical and electron- microscopical studies). Homo sapiens and other spp. (Mammalia) GAUNTER (DEVIS), Mrs. R. J. M.Sc. — Dept. of Zool., Univ. of the Witwatersrand, Milner Park, JOHANNESBURG, S.Africa a An electron microscopic study of development. (Ascidiae) b Electron microscopic study. Convoluta macnaei (Turbellaria) CAVALLIN (THOMAS), Mrs. M. Dr.Biol.anim. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Recherches descriptives et experimentales sur la morphogenese de I'appareil genital. Car- ausius spec. (Cheleutoptera) CAVE, M. D. Ph.D. — Dept. of Anat. and Cell Biol., School of Med., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a The origin and function of extrachromosal deoxyribonucleic acid during oogenesis and early stages of embryogenesis. Gryllus domesticus (Orthoptera) b The protein components of giant polytene chromosomes. Chironomus thummi (Diptera) CAZAUX CI. Dr.Biol.Anim. — Inst, de Biol. Marine, Fac. des Sci., Univ. de Bordeaux, 2 rue du Prof. Jolyet, 33 ARCACHON, France a Larval development from egg to metamorphosis and beyond (artificial fertilization, rearing in the laboratory). (Polychaeta) CEBRA, J. J. Ph.D., Prof. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE, Md. 21218, U.S.A. a Differentiation of lymphoid cells with respect to variety of their immunoglobulin product (polymorphic form of immunoglobulin and specificity of antibody). Oryctolagus cuniculus ( LagomoTpha) . Cavia porcellus (Rodentia), Homo sapiens (Primates) CECCARINI, C. Ph.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy a Ribosomal protein synthesis, ribosomes and other subcellular components. Dictyosfelium purpureum (Acrasiales) CEDARD (WILLSTAETTER), Mrs. L. M.D., Ph.D. — Lab. de Chimie Hormonale, Maternite de Port-Royal, 121 Bd. de Port-Royal, PARIS XI Ve, France a Action of gonadotropins on steroidogenesis and glycogenolysis in placenta perfused i n vitro; demonstration of the role of cyclic 3'5'AMP as intercellular mediator. Homo sapiens (Primates) b Biosynthesis of steroids and cholesterol in organotypic cultures of immature gonads; influence of HCG on steroidogenesis. Gallus domesticus (Aves) CENTER, Mrs. E. M. Ph.D. — Dept. of Biol., Stanford Univ., STANFORD, Calif. 94305, U.S.A. a Developmental genetics of mutations involving abnormal development of limbs, tail, and neural tube. Mus musculus (Rodentia) CERBELLE, J. C. — Lab. de Physiol. Gener., Fac. des Sci. de Bordeaux, Avenue des Facultes, 33 TALENCE, France 33 a Development of neuromuscular system (action potentials; establishment of first reflex arc). Ratios spec, Cavia spec. (Rodentia), Oryctolagus spec. (Lagomorpha) CERIMELE, D. M.D. — Dept. of Dermatol., School of Med., Univ. of Pavia, Policlinico S. Matteo, 27100 PAVIA. Italy a Quantitative and qualitative histochemical changes in skin during fetal life. Homo sapiens (Primates) CHAKKO, T. V. M.Sc. — Dept. of Zool., Fac. of Sci., M.S. Univ. of Baroda, BARODA-2, India a Tail regeneration in the adult. Hemidactylus flaviviridis (Lacertilia) CHAKRAVARTY, A. M.Sc. — Dept. of Zool., Presidency Coll., CALCUTTA-12, W. Bengal, India CHALLICE, C. E. Ph.D., Prof. — Dept. of Physics, Fac. of Arts & Sci. Univ. of Calgary, CALGARY 44, Alta., Canada a Electron microscopy of the heart in development. Mas musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha) CHALLIER, J.-C. Dr.3e Cycle — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol, placentaire, Hop. Saint-Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e, France a Ultrastructure de la membrane amniotique. (Mammalia) CHALOUPKA, Z. MUDr. — Inst, of Pathophysiol., Med. Fac, Charles Univ., Lidicka 1, PLZEn, Czechoslovakia CHAMBERLAIN, J. G. Ph.D. — Dept. of Anat., School of Med., Univ. of Cahfomia, SAN FRANCISCO, Calif. 94122, U.S.A. a Pathogenesis of experimentally induced congenital hydrocephalus: 6-aminonicotinamide injected during pregnancy. Rattus rattus (Rodentia) h Intraamniotic injections of metabolites and antimetabolites as replacement therapy during teratogenesis. Rattus rattus (Rodentia) c p02 in embryo brains predestined to be hydrocephalic. Rattus rattus (Rodentia) CHAMBOLLE, P. Dr.en Biol.Anim. — Lab. de Biol. Anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, 33 TALENCE, France a Etude de la gestation. Gambusia spec. ( Poeciliidae, Teleostei) h Etude du developpement in vitro. Gambusia spec. (Poeciliidae, Teleostei) c Etude de I'ultrastructure des oeufs. Gambusia spec. (Poeciliidae, Teleostei) CHANCONIE (MAURY), Mrs. M. Dr.3e Cycle — Lab. d'Anat. Comp., Fac des Sci., 7 Quai Saint-Bernard, 75 PARIS 5e, France a Studies on respiration during early stages of egg development. Salmo irideus, S. fario (Teleostei) (in collaboration with Ch. DEVILLERS) b Relationships between respiration and oxidative phosphorylations as shown by the action of 2-4 dinitrophenol and some inhibitors of respiration in early stages of egg development. Salmo irideus, S. fario (Teleostei) (in collaboration with Ch. DEVILLERS) CHANDEBOIS, Miss R. Dr., Prof. — Lab. de Morphogenet. Anim., Fac. des Sci., I Place Victor Hugo, 13 MARSEILLE 3, France a Analysis of the activity of the undifferentiated material in normal and regenerating animals (electron microscopy, tissue culture, irradiation). Dugesia subtentaculata, D. gonocephala ( Turbellaria) b Analysis of cell equilibria between the two cell types of the undifferentiated tissue and of the equilibria between this undifferentiated tissue and the differentiated cells. Dugesia subtentaculata, D. gonocephala (Turbellaria) CHANG, C. Y. Ph.D. — Inst, of Zool., Acad. Sinica, Haitien, PEKING (53), China (via Hong-Kong) CHANTURISHVILI, P. S. Dr.biol.sci., Prof. — Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of the Georgian S.S.R., TBILISI, U.S.S.R. CHARNIAUX (COTTON). Mrs. H. Dr.es Sci., Prof. — Lab. d'Evol., Fac. des Sci. de Paris, 105 Bd. Raspail. 75 PARIS 6, France • — Lab. de Genet. Evol. et de Biometrie, C.N.R.S., 91 GIF-sur-YVETTE, France a Controle hormonal de la differenciation sexuelle; la glande androgene. (Malocostraca, Crustacea) b Controle endocrine de I'hermaphrodisme proterandrique. Pandalus borealis, Lysmata seticau- data (Decapoda natantia, Crustacea) c Recherches sur I'autodifferenciation ovarienne. (Malacostraca, Crustacea) (en collaboration avec Mrs. J. BERREUR (BONNENFANT) et Mrs. M. C. FRIED (MONTAUFIER) ) d Recherches sur la secretion d'hormone femelle par le testicule apres inversion experimental en ovaire. (Talitridae, Amphipoda, Crustacea) e Recherches sur la nature chimique de I'hormone androgene. Carcinus maenas (Decapoda, Crustacea) CHASE, H. B. Ph.D., Prof. — Div. of Biol. & Med. Sci., Brown Univ., PROVIDENCE, R.I. 02912, U.S.A. • a Developmental genetics of hair growth phases, using mutants hairless (hr), Rex (Re), and satin (sa). Mus musculus (Rodentia) 34 CHATTERJEE, S. M.Sc. — Dept. of Zool., Presidency Coll., CALCUTTA-12, W.Bengal, CHAUDHRY, H. S. D.Phil.. Prof. — Dept. of Zool., Univ. of Gorakhpur, GORAKHPUR (U.P.), India a Studies on neuroendocrines and chemosterilants in relation to development. (Insecta) b Uptake, metabolism and histopathological effects of radioactive phosphorus (P^^) in developing stages. Freshwater species (Teleostei) CHAYTOR, D. E. B. Ph.D., Prof. — Dept. of Zool., Njala Univ. Coll., Private Mail Bag, FREETOWN, Sierra Leone, W.Africa a Embryonic development of the gonad. Gallus domesticus (Aves) CHEN, P. K. Ph.D. — Dept. of Biol., Georgetown Univ., 37th & O. St. N.W., WASHING- TON, D.C. 20007, U.S.A. a Developmental pathology and teratogenesis. Datura meteloides. Nicotians tabacum (Solana- ceae) h Developmental physiology. Datura meteloides, Lycopersicon esculentum (Solanaceae) CHEN, P. S. Dr.Phil., Prof. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16, CH-8606, ZURICH, Switzerland • CHENEY, R. H. Sc.D., Prof. (Emer.) — Brooklyn Botanic Garden, 1000 Washington Ave., NEW YORK, Brooklyn, N.Y. 11225, U.SJN.. a Retardation effect of dimethylated xanthines on development. Arbacia punctulata (Echin- oidea) b Theophylline, theobromine, and caffeine effects on fecundity and development. 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) g Developmental effects of chemical inhibitors of protein synthesis. Arbacia punctulata (Echinoidea) CHENG, Th. C. Ph.D., Prof. — Dept. of Zool., Univ. of Hawaii, 2538 The Mall, HONOLULU, Hawaii 96822, U.S.A. CHEVALLIER, A. D. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53 38 GRENOBLE. France a Differentiation, localization and migration of neural crest cells by radioautographic analysis. Gallus domesticus (Aves) h The early differentiation of the suprarenal gland in chorioallantoic grafts. Gallus domes- ticus (Aves) CHEVREAU, J. P. Dr.en Med.. Prof. — Lab. d'Histol.-Embryol. B., Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France a Postnatal development of cerebral cortex. Lepus cuniculus (Lagomorpha) h Myelinization of brain. Lepus cuniculus (Lagomorpha) CHEVREMONT, M. }. J. Dr.hon.c, Prof. — Inst. d'Histol., Univ. de Liege, 20 rue de Pitteurs, LIEGE, Belgium CHI, Miss YEA-YUAN B.Sc. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada a Effect of 3',5'-adenosine monophosphate (cyclic AMP) on ion transport. Dictyostelium discoideum (Accasiales) (in collaboration with D. W. FRANCIS) CHIARODO, A. J. Ph.D. — Dept. of Biol., Georgetown Univ., 37th & O. St. N.W., WASHINGTON, D.C. 20007, U.S.A. a Neuroembryology (experimental morphology). Sarcophaga bullata (Diptera) CHIBON, P. Dr.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France a Nuclear labelling of embryonic cells (autoradiography). Pleurodeles waltlii, Triturus alpestris (Ucodela) h Morphogenetic abilities and differentiation of neural crest cells. Pleurodeles waltlii, Triturus alpestris (Urodela) c Origin and differentiation of teeth. (Amphibia) d Genetic and embryonic effects of high nuclear labelling. (Amphibia) CHIEFFI, G. M.D.. Prof. — Lab. di Anat. Comp., 1st. di Istol. ed Embriol., Univ. di Napoli, Via Mezzocannone 8, 80134 NAPOLI, Italy • CHINO, H. D.Sc, Prof. — Biol. Inst., Coll. of Gen. Educ, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan CHITNIS, P. S. Ph.D. — Cell Research Lab., Dept. of Zool.. Nowrosjee Wadia Coll., POONA-1. India a A histochemical (qualitative and quantitative) study of phospholipids and phosphatases in the larval stages. Chrysomia rufifacies (Diptera) (in collaboration with D. N. KAMAT, Kolhapur) 35 b Intra vitam studies on the development and metamorphosis of Malpighian tubules. Chrysomia rufifacies (Diptera) c Succinoxidase and succinodehydrogenase system in larva, pupa and imago (histochemical techniques). Aedes egypfi, Chrysomia rufifacies (Diptera) CHOUARD, C. H. — Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie. France CHRISPEELS, M. J. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037. U.S.A. a Biochemical processes in development: mechanism of protein secretion and cell wall for- mation. (Plantae) CHRIST. B. Dr.med. — Anat. Inst, der Univ.. Kreuzbergring 36, 34 GOTTINGEN, W.Germany a Experimente zur Entstehung der Segmentierung der Achsialorgane. Callus gallus (Aves) h Experimente zur Chondrogenese. Gallus gallus (Aves) CHUANG HSIAO HUI Dr.rer.nat.habil. — Lab. of Developm. Physiol.. Inst, for Exper. Biol., Acad. Sinica, 320 Yo Yang Rd., SHANGHAI, People's Republ. of China • CHURCH. N. S. Ph.D. — Research Station, Research Branch, Canada Agriculture, Univ. Campus. SASKATOON. Sask.. Canada a Endocrinology of hypermetamorphosis. Lytta nuttalli (Coleoptera) b Embryology. Lytta viridana (Coleoptera) CHURCH, R. R. Ph.D., Prof. — Dept. of Biol, and Morphol. Sci., Univ. of Calgary. CALGARY 44, Alta.. Canada a Study of messenger RNA synthesis in fetal and regenerating liver by RNA/DNA molecular hybridization. Mus musculus (Rodentia) b Site of hormone action on DNA transcription and RNA translation at various stages of development. Oryctolagus cuniculus (Lagomocpha) CICADA (LEONARDI), Mrs. M. Dott.Sci.Biol. — 1st. di Zool., Univ. di Milano, Via Celoria 10, MILANO. Italy • CIHAK. R. MUDr. — Dept. of Anat.. Charles Univ.. U nemocnice 3, PRAHA 2, Czecho- slovakia a Prenatal development of muscles. Homo sapiens (Primates) CLAIR AMBAULT, P. Dr.es Sci. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint-Bernard. 75 PARIS 5e, France a Morphological and experimental studies of brain development. Discoglossus pictus, Rana pipiens, Bufo regularis, Rhacophorus spec, Nectophrynoides occidentalis (Anura), Pleura- deles waltlii (Urodela) CLARK (LATTO). Mrs. J. C. B.Sc. — Dept. of Zool.. The University, GLASGOW W2, Scotland, U.K. a Metabolic activity of primordial germ cells. Xenopus laevis (Anura) CLAVERT, J. M. J. Dr.es Sci., Prof. — Inst. d'Embryol.. Fac. de Med.. 1 Place de I'Hopital, STRASBOURG, France • a Recherches sur le determinisme de la symetrie bilaterale. (Pisces; Reptilia; Aves) b Chimioteratogenese (cortisone, antimitotiques). (Aves; Mammalia) CLAXTON. }. H. Ph.D. — Dept. of Agric. Biol.. Univ. of New England, ARMIDALE, N.S.W. 2351, Australia a Developmental analysis of bristle pattern characteristics using X-ray induced genetic mosaics. Drosophila melanogaster (Diptera) CLAYTON (FREEDMAN), Mrs. R. M. M.A. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd.. EDINBURGH EH9 3JN. Scodand. U.K. • a Metabolic and immunochemical studies of regulation and structure of lens proteins and lens development. Xenopus laevis (Anura), Gallus domesticus (Aves) (in collaboration with J. C. CAMPBELL and D. E. S. TRUMAN) b Immunochemical studies of retina and eye cup. Xenopus laevis (Anura) (in collaboration with J. C. CAMPBELL) c Studies of mutants affecting the eye and lens. Mus musculus (Rodentia) (in collaboration with J. C. CAMPBELL) CLEFFMANN. G. Dr.. Prof. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/ Lahn, W.Germany a Synthesis of macromolecular compounds in relation to the cell cycle. Tetrahymena pyri- formis (Ciliata) CLEGG, E. J. M.D., Ph.D. — Dept. of Human Biol, and Anat., Univ. of Sheffield, SHEF- FIELD, England a Effect of hypoxia on somatic and reproductive growth. (Mammalia) b Growth patterns in the accessory reproductive organs. (Mammalia) c Effects of cadmium salts on the reproductive tract. (Mammalia) CLEGG, J. S. Ph.D.. Prof. — Dept. of Biol.. Univ. of Miami. CORAL GABLES, Fla. 33124, U.S.A. a Biochemical and physiological studies on cryptobiosis in the embryo (major emphasis on metabolism of trehalose, glycerol and other carbohydrates). Artemia salina (Anostraca) 36 b Protein and nucleic acid metabolism during embryonic development (major emphasis on in vitro protein synthesizing system, analysis of polysome formation and breakdown and synthesis of various RNA species). Artemia salina (Anostraca) CLEMENT, A. C. Ph.D.. Prof. — Dept. of Biol., Emory Univ., ATLANTA, Ga. 30322, U.S.A. • a Experimental analysis of early embryonic determination. Ilyanassa obsoleta (Gastropoda) h Cytochemical and physiological studies of early development. Ilyanassa obsoleta (Gastro- poda) CLERMONT. Y. Ph.D. Prof. — Dept. of Anat.. McGill Univ., MONTREAL 2, Que., Canada a Growth and renewal of the spermatogonia! population in prepuberal animals. Rattus nocvegicus (Rodentia) CLEWE, Th. H. M.D — Delta Region. Primate Research Center, Tulane Univ., COVING- TON, La. 70433, U.S.A. a Physiology of gamete and zygote transport in the female. (Mammalia) CLIVE, D. Ph.D. — Dept. of Biol., Georgetown Univ., 37th 6 O. St. N.W.. WASHING- TON, D.C. 20007, U.S.A. a Regulation of gene activity during embryogenesis by "adult" chromosomal RNA protein complex. Rana pipiens (Anura) b Chromosome replication in nuclear transplant embryos. Rana pipiens (Anura) CLUTTER (SUSSEX), Mrs. M. E. Ph.D. — Dept. of Biol.. Kline Biol. Tower, Yale Univ., NEW HAVEN. Conn. 06520, U.S.A. a Histodifferentiation in tissue cultures. Nicotiana tabacum (Solanaceae) COALSON, R. E. Ph.D., Prof. — Dept. of Anat., Med. School, Univ. of Oklahoma, 801 NE 13th St.. OKLAHOMA-City. Okla. 73104. U.S.A. a Studies on insulin in the developing pancreas. Gallus domesticus, Columba livia (Aves). Rattus norvegicus, Cavia cobaya (Rodentia) COCK, A. C. Ph.D. — Dept. of Zool., Univ. of Southampton. SOUTHAMPTON S09 5NH, England a Developmental genetics of body shape and size. Artemia salina (Anostraca, Crustacea), Gallus gallus (Aves) COETZEE, Miss F. C. B.Sc. — Dept. of Zool., Univ. of Pretoria. Hillcrest, PRETORIA. S.Africa COHEN. B. B. B.Sc.Ph.D. — Dept. of Cell Biol.. Univ. of Glasgow, GLASGOW W.2. Scotland, U.K. a Protein synthesis in reticulocytes. Oryctolagus cuniculus (Lagomorpha) COHEN, M. H. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Ordening in time and space of events in developing systems COHEN, Ph. P. Ph.D., M.D., Prof. — Dept. of Physiol. Chem., Univ. of Wisconsin. 1215 Linden Drive. MADISON. Wis. 53706. U.S.A. a Biochemical aspects of differentiation in liver during metamorphosis (enzyme changes and induction; RNA. DNA and histone changes; biochemical mechanism of thyroxine action as an inducer). Rana catesbeiana (Anura) COHEN. S. Ph.D.. Prof. — Dept. of Biochem., School of Med.. Vanderbilt Univ.. NASH- VILLE. Tenn. 37203, U.S.A. • COHN, S. A. Ph.D.. Prof. — Dept. of Anat., Coll. of Basic Med. Sci., Med. Units. Univ. of Tennessee. 62 S. Dunlap St.. MEMPHIS. Tenn. 38103. U.S.A. a The development of glands of ectodermal origin. Mus musculus (Rodentia) b Studies of tooth development. Mus musculus (Rodentia) c Histologic and histochemical studies of the periodontium. Mas musculus (Rodentia) COLEMAN. J. R. Ph.D., Prof. — Div. of Biol, and Med. Sci., Brown Univ.. PROVIDENCE, R.I. 02912. U.S.A. a Differentiation of embryo cells in culture, particularly skeletal muscle, cartilage and retinal pigment cells: synthesis of specific proteins (myosin, collagen), glycosaminoglycans (chon- droitin sulfate), synthesis and processing of RNA, and the effects of nucleoside analogs on cellular differentiation. Gallus domesticus (Aves) COLEMAN, R. D. D.D.S., Prof. — Dept. of Dental Anat., School of Dentistry, Univ. of California Med. Center, 3rd & Parnassus Aves., SAN FRANCISCO, Calif. 94122, U.S.A. a The possible role of sulfated mucopolysaccharides in normal and cleft palate development by employing radioactive sulfur (palatal defects induced by a transitory maternal defi- ciency of folic acid). Rattus norvegicus (Rodentia) h A study of the uptake of tritiated thymidine in normal and cleft palate development (palatal defects induced by a transitory maternal deficiency of folic acid). Rattus norvegicus (Rodentia) c Oro-facial abnormalities induced by the folinic acid antagonist pyrimethamine. (Mammalia) COLLE (VANDEVELDE), Mrs. A. M.D. — Lab. of Anat.. Fac. of Med., Univ. of Gent. Ledeganckstr. 35, GENT, Belgium 37 COLLENOT, A. Dr.es Sci. — Lab. d'Embryol.. Fac. des Sci., 9 quai St. Bernard, 75 PARIS Ve, France • COLLIER, J. R. Ph.D., Prof. — Dept. of Biol., Brooklyn Coll., Bedford Ave. & Ave. H, NEW YORK, Brooklyn, N.Y. 11210, U.S.A. • a Nucleic acid and protein synthesis of the embryo, with particular interest in the tran- scription and regulation of the genome during embryogenesis: 1. RNA and protein synthesis during early development; 2. the role of DNA-dependent RNA synthesis in embryogenesis. Ilyanassa obsolete (Gastropoda) COLLIN, J.-P. D.E.S. — Lab. de Biol. Anim., 1 Av. Vercingetorix, 63 CLERMONT- FERRAND, France a Developpement de I'epiphyse (microscopic electronique). (Reptilia; Aves; Mammalia) COLLIN. W. K. Ph.D. — School of Public Health, Univ. of California, LOS ANGELES, Calif. 90024, U.S.A. a Electron microscopy of developmental stages. Hymenolepis citelli (Cestoda), Brughia malayi (Nematode) COLLINI, Miss R. Dr. — 1st. di Zool., Univ. di Milano, Via Celoria 10, MILANO Italy COLLINS, M. F. Ph.D. — Dept. of Zool., The Univ. of Texas, AUSTIN, Tex. 78712, U.S.A. a Cellular surface properties and morphogenetic movements. Gallus domesticus (Aves) COLOMBO, G. Dr.Biol., Prof. — 1st. di Zool., Univ. di Ferrara, Via Previati 24, 44100 FERRARA, Italy • COLOMBO, L. Dr.biol.sci. — 1st. di Biol. Anim., Univ. di Padova. Via Loredan 10. 35100 PADOVA, Italy a Steroid hormone biosynthesis during sexual differentiation. Sparus auratus (Teleosfei) COLWIN, A. L. Ph.D., Prof. — Dept. of Biol, Queens Coll. of the City Univ. of New York, NEW YORK, Flushing, N.Y. 11367, U.S.A. • a Fertilization: sperm-egg association and zygote formation; cell contact and adhesion; fusion of plasma membranes; egg envelopes; lytic changes; cortical changes; spermblastomere association (living material and electron microscope studies). (Enteropneusta; Echinoder- mata; Annelida, etc.) (in collaboration with Mrs. L. H. COLWIN) COLWIN, Mrs. L. HUNTER Ph.D., Prof. — Dept. of Biol., Queens Coll. of the City Univ. of New York, NEW YORK, Flushing. N.Y. 11367, U.S.A. • a Fertilization: sperm-egg association and zygote formation; cell contact and adhesion; fusion of plasma membranes; egg envelopes; lytic changes; cortical changes; spermblas- tomere association (living material and electron microscope studies). (Enteropneusta; Echinodermata; Annelida, etc.) (in collaboration with A. L. COLWIN) COMOGLIO, P. M.D. — Dept. of Anat.. Univ. of Turin, Corso M.D'Azeglio 52, 10126 TORINO, Italy a Histochemical and ultrastructural investigations of thymus and lymphoid organs during development in vivo and in vitro CONAN, G. Y. Lic.es Sci. — Lab. de Biol. Invert. Marins, Museum Natl. d'Hist. Nat. Paris, 57 rue Cuvier, PARIS Ve, France a Descriptive and experimental embryology: morphogenesis. Sagartia troglodytes and other spp. (Anthozoa) CONKLIN, J. L. Ph.D., Prof. — Dept. of Anat., Med. School, Univ. of Michigan, East Med. Bldg., ANN ARBOR, Mich. 48104, U.S.A. CONTE, G. M.D. — 1st. di Anat. e Istoembriol., Univ. di Pisa, Via Roma 55, 56100 PISA, Italy a Development of the heart. Oryctolagus cuniculus (Lagomorpha), Homo sapiens (Primates) h Experimental morphology of the developing heart. Gallus domesticus (Aves), Oryctolagus cuniculus (Lagomorpha), Rattus norvegicus (Rodentia) CONTI, G. M.D., Prof. — Inst, of Histol. and Gen. Embryol., Univ. - Perolles. 1700 FRIBOURG, Switzerland (no embryological work in progress) CORLISS. C. E. Ph.D.. Prof. — Dept. of Anat., Coll. of Basic Med. Sci., Med. Units, Univ. of Tennessee, 62 S. Dunlap St., MEMPHIS, Tenn. 38103, U.S.A. a Radioautographic studies of nuclear migration in neural epithelium of normal and teratogen- treated embryos. Gallus domesticus (Aves) CORNEC. J. P. — Lab. de Morphogenet. Anim.. Fac. des Sci., 1 Place Victor Hugo, 13 MARSEILLE 3, France a Analyse des facteurs qui determinent I'absence de regeneration. (Hinidinea, Annelida) CORNER, G. W. M.D., D.Sc, Prof. — American Philosoph. Soc, 104 South 5th St.. PHILADELPHIA, Pa. 19106, U.S.A. • CORNER. M. A. Ph.D. — Netherl. Central Inst, for Brain Research, IJdijk 28, AMSTER- DAM-O., Netherlands a Development of central nervous system function (electrophysiological techniques). Gallus domesticus (Aves) 1. Electroencephalogram and its relation to embryonic behaviour and neuronal activity patterns. 38 2. Chemical energy production and utilization during critical periods of functional devel- opment in the embryo. 3. Neurological bases for the maturation of spontaneous and reflex patterns of movement (brain stimulation and lesion studies; electrical activity in explants). b Role of neural function in the embryonic development of the central nervous system (electrophysiology and neurohistology). Xenopus laevis (Amtra), Gallus domesticus (Aves) CORSIN, Miss J. Lic.es Sci. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint-Bernard, 75 PARIS 5e, France a Experimental studies on bone development in the skull. Pleurodeles waltlii (Urodela) COSTA, M. M.D. — Dept. of Anat., Univ. of Turin, Corso M. D'Azeglio 52, 10126 TORINO, Italy a Histochemical study of the development of Remak's nerve COSTANZO, G. — 1st. Idrobiol. e Pescicoltura, Univ. di Messina, Via dei Verdi 75, 98100 MESSINA, Italy a Ciclo vitale. Lichomolgus spp. (Cyclopoida, Copepoda) COSTELLO, D. P. Ph.D., Prof. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C. 27514, U.S.A. • COSTLOW. J. D.. Jr. Ph.D. — Marine Lab., Duke Univ., BEAUFORT, N.C. 28516, and Dept. of Zool.. Duke Univ., DURHAM. N.C. 27706, U.S.A. COULOMBRE, A. J. Ph.D. — Sect, on Exper. Embryol., Ophthalmol. Branch, Nat. Inst, of Neurol. Dis. and Stroke, Natl. Inst, of Health, BETHESDA, Md. 20014. U.S.A. • a Growth and morphogenesis of the eye. Gallus domesticus (Aves) (in collaboration with Mrs. J. L. COULOMBRE) b Development of the ocular skeleton. Gallus domesticus (Aves) COULOMBRE (LACY), Mrs. J. L. B.S. — Sect, on Exper. Embryo!., Ophthalmol. Branch, Natl. Inst, of Neurol. Dis. and Stroke, Natl. Inst, of Health, BETHESDA. Md. 20014, U.S.A. a Growth and morphogenesis of the eye. Gallus domesticus (Aves) (in collaboration with A. J. COULOMBRE) COULON (BUBLEX). Mrs. M. — Lab. de Biometrie, Sect, de Biol. Gener. et Appl., Fac. des Sci de Lyon. 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Etude de la restauration apres irradiation X dans ses rapports avec le determinisme de la mue. Bombyx mori (Lepidoptera) COUNCE (NICKLAS). Mrs. S. J. Ph.D. — Dept. of Zool.. Duke Univ., DURHAM. N.C. 27706. U.S.A. a Embryo culture in vitro; experimental analysis of embryogenesis; developmental genetics and physiology; cytogenetics, including puffing patterns at various developmental stages in different tissues. Miastor spec. (Cecidomyidae, Diptera) b Genetics of egg structure (inheritance of egg pattern in different strains and species). Drosophila hydei and relatives. D. melanogastec (Diptera) c Morphological and physiological effects of female-sterility genes. Drosophila hydei and relatives, D. melanogasfer (Diptera) COUPfi, R. J. F. Lic.es Sci. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint-Bernard. PARIS 5e, France a Comportement et devenir — en culture in vitro — de cellules embryonnaires isolees. Discoglossus pictus. Pleurodeles waltlii (Amphibia), Esox lucius (Teleostei) COUSINEAU, G. H. Ph.D. — Lab. de Biol. Molec, Dept. de Biol., Univ. de Montreal, C.P. 6128, MONTREAL 3, Que., Canada a Study of the uptake and incorporation of labelled amino acids and pyrimidines into macromolecules of developing eggs, and the effect of actinomycin D. D2O and hexa- homoserine (with emphasis on "incorporation correction", i.e. the percent ratio of in- corporation over uptake). Arbacia punctulata. Strong ylocentrotus purpuratus, Lytechinus pictus (Echinoidea) b Studies on bentonite as inhibitor of egg ribonuclease activity. Arbacia punctulata. Strongylocentrotus purpuratus, Lytechinus pictus (Echinoidea) c Measurement of the amount of translatable RNA in the presence of bentonite. and char- acterization of the proteins produced in vitro. Arbacia punctulata, Strongylocentrotus purpuratus, Lytechinus pictus (Echinoidea) COWAN. W. M. Ph.D.. Prof. — Dept. of Anat.. School of Med., Washington Univ., ST. LOUIS. Mo. 63110. U.S.A. a Experimental studies of the development of the visual system. Gallus domesticus (Aves), Rattus novvegicus (Rodentia) b The factors involved in the formation and maintenance of synaptic connections in the central nervous system. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) COWARD. S. J. Ph.D.. Prof. — Dept. of Zool.. Univ. of Georgia, ATHENS. Ga. 30601, U.S.A. a Dissociation and reaggregation of cells in culture. Dugesia dorotocephala, Bdelloura Candida (Turbellacia) 39 b Physiological gradients and polarity control (kinetic studies of macromolecule precursors,. Dugesia dorotocephala (Turbellaria) c Differential and sequential gene activation during regeneration (cell proliferation and enzymes of nucleotide metabolism). Dugesia dorotocephala (Turbellaria) d Variations in enzyme activity during early development (thymidine kinase, uridine kinase, ribonucleotide reductase) correlated with changes in mitotic index and variation in cell cycle; special emphasis on primary induction. Rana pipiens (Anura) e Chondrogenesis in vivo. Mesocricetus auratus (Rodentia) f Relation of mitotic activity and DNA synthesis to differentiation. Mesocricetus auratus (Rodentia) g Oogenesis in vivo. Mesocricetus auratus (Rodentia) h Non-mitotic DNA synthesis. Mesocricetus auratus (Rodentia) COZETTE, P. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY, France CRACIUN, Mrs. O. L.Sc. — Cat. de Biol.. Inst. Medico-Farmaceutic, Str. Pasteur 6. CLUJ, Rumania a Affrontation d'organes embryonnaires in vitro. Mus rattus (Rodentia) h Infuence de la vitamine B12 sur la regeneration du foie. Mus musculus (Rodentia) CRAIG, D. A. Ph.D. — Dept. of Entomol., Univ. of Alberta, EDMONTON. Alta.. Canada a Descriptive embryology. Anopheles stephensi, Gymnopais spec, Neocurupira chiltoni, Simulium venustum (Nematocera, Dipfera) CRAIG, G. B. Dr. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. 46556. U.S.A. a Pupal development and adult fertility as affected by deoxyriboside base analogues applied topically at onset of pupation. (Nematocera, Diptera) (in collaboration with J. A. M. BROWN) CRAIGMYLE, M. B. L. M.D. — Dept. of Anat., Univ. Coll. of S. Wales & Monmouthshire, Newport Rd., CARDIFF, Wales, U.K. CRAWFORD, R. B. Ph.D., Prof. — Dept. of Biol.. Trinity Coll.. HARTFORD, Conn. 06106. U.S.A. a The relationship of the synthetic pathways of adenosine triphosphate to morphogenesis and differentiation. Fundulus heteroclitus (Teleostei) , Ambystoma maculatum (Urodela) b The kinetics of RNA synthesis during early embryogenesis, studied particularly in relation to energetics metabolism. Fundulus heteroclitus (Teleostei), Ambystoma maculatum (Uro- dela) c Activation of hexokinase activity in embryos. Ambystoma maculatum (Urodela) d Relationship of free amino acid pool to protein synthesis in embryos. Fundulus heteroclitus (Teleostei), Ambystoma maculatum (Urodela) CRIPPA. M. M.D. — 1st. di Anat. Comp.. Univ. di Palermo, Via Archirafi 20, 90123 PALERMO. Italy a Patterns of gene activity during early development. Xenopus laevis (Anura) CRISTEA. Miss M. M.D. — Cat. de Biol., Inst. Medico-Farmaceutic. Str. Pasteur 6, CLUJ. Rumania a Influence d'alcool ethylique sur le developpement du foie embryonnaire (histochimie et biochimie). Mus rattus (Rodentia) CROISILLE. Y. Dr. — Inst. d'Embryol. et Teratol. exper. du CN.R.S., 49bis Av. de la Belle Gabrielle. 94-NOGENT-sur-MARNE, France — Lab. d'Embryol, exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France • a Developmental, kinetic and immunological studies of enzymes (lactic dehydrogenases. hypoxanthine dehydrogenase, esterases) in different tissues. Callus gallus (Aves) b Immunohistological studies of the first appearance of organ-specific proteins during kidney differentiation. Gallus gallus (Aves) CROIZAT, B. Dr.3e cycle — Centre de Recherches sur la Nutrit. du C.N.R.S.. 9 rue Emile, 92 BELLEVUE, France CROWELL, P. S. Ph.D.. Prof. — Dept. of Zool.. Indiana Univ., BLOOMINGTON, Ind. 47401, U.S.A. • CRUZ, A. R. M.D., Ph.D. — Dept. de Morfol. Hum. Func. e Aplic. Fac. de Med. de Ribeirao Preto. Univ. de Sao Paulo. Caixa Postal 301, RIBEIRAO PRETO, S.P.. Brazil a Histochemistry of developing neurons. (Vertebrata) (in collaboration with R. AZOUBEL) b Allometric growth of some organs. Rattus rattus (Rodentia) c Nuclear size classes in nerve cells. Mus musculus (Rodentia) d Allometric growth of thyroidectomized animals. Rattus rattus (Rodentia) (in collaboration with S. lUCIF) e Allometric growth of the eye in hemispherectomized animals. Rattus rattus (Rodentia) (in collaboration with R. AZOUBEL and S. lUCIF) f Effect of hemispherectomy on the thyroid gland. Rattus rattus (Rodentia) (in collaboration with R. AZOUBEL and S. lUCIF) CRUZ (DE LOSADA), Mrs. M. V. de la M.D. — Dept. de Embriol.. Inst. Nac. de Cardiol.. Av. Cuauhtemoc nr. 300, MEXICO 7. D.F.. Mexico 40 CSABA, G. M.D. — Inst, of Histol. and Embryol.. Med. Univ.. Tuzolto u. 58, BUDAPEST IX, Hungary a Experimental and physiological embryology; teratogenesis. Rattus cattus (Rodentia) h Developmental genetics. Rattus rattus (Rodentia) c The molecular biology of the mast cell formation. Rattus rattus (Rodentia) CSILLIK. B. M.D.. Prof. — Dept. of Anat., Univ. Med. School, Kossuth Lajos sug. -ut 40, SZEGED. Hungary a Developmental histochemistry of the archicerebellar cortex. Mus rattus (Rodentia) (in collaboration with P. KASA) b Developmental histochemistry and electron miscroscopy of the vegetative ground plexus. Mus rattus (Rodentia) (in collaboration with Miss E. KNYIHAR) c Development of the adrenergic inhibitory terminals in autonomic ganglia: fluorescence microscopy and electron microscopy. Mus rattus (Rodentia) (in collaboration with G. KALMAN and Miss E. KNYIHAR) GUCCI. C. E. M.D. — Pediat. Cardiac Service. Lenox Hill Hosp., 100 E. 77th St., NEW YORK. N.Y. 10021. U.S.A. CUMINGE, Miss D. Lic.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle. 94 NOGENT-sur-MARNE, France a Etude au microscope electronique des associations de cellules cancereuses et d'organes embryonnaires. Gallus gallus (Aves) CUOMO. Miss M. Dr. — 1st. di Biol. Gen.. Fac. di Med., Univ. di Roma, Policlinico Umberto I. 00100 ROMA. Italy CURTIS. A. S. G. Ph.D., Prof. — Dept. of Cell Biol.. Univ. of Glasgow. GLASGOW W.2. Scotland, U.K. • a Structure and physical chemistry of embryonic cell surfaces. (Vertebrata) h Segregation mechanisms in reaggregates of embryonic cells. (Vertebrata) c Differentiation of cells in culture. (Vertebrata) CURY, G. Agr.Phil., Lic.es Sci. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY, France CUSIMANO (CAROLLO), Mrs. T. D.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy a The causal development of the mouth. Discoglossus pictus (Anura) b Action of nucleosides and nucleotides on embryonic development. (Ascidiae) CZAPLICKI, J. M.D. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19, Rokit- nica, ZABRZE 8, Poland a The influence of embryonal thymus extracts on the tolerance of transplanted tissues, especially neoplasmic tumours. (Rodentia) CZAPSKA (DZIEKANOWSKA). Mrs. D. Ph.D. — Dept. of Gen. Biol., Silesian Acad, of Med.. K. Marksa 19. Rokitnica, ZABRZE 8. Poland a Karyology of congenital malformations. Homo sapiens (Primates) CZIHAK. G. Dr.phil. — Arbeitsgr. Biochem. Embryol.. Max-Planck-Inst. f. Zellbiol., Abt. Bauer, Melanchthonstr. 36. D 7400 TUBINGEN, V/.Germany a Molecular biology of early development. Paracentrotus lividus, Psammechinus miliaris (Echinoidea) b Cleavage pattern. Paracentrotus lividus, Psammechinus miliaris (Echinoidea) c Regulation of mitosis. Paracentrotus lividus, Psammechinus miliaris (Echinoidea) CZOEOWSKA, Miss R. K. Dr. — Dept. of Zool.. Univ. of Warsaw, Krakowskie Przed- miescie 26/28. WARSZAWA 64. Poland a Cytological and experimental studies on the origin of germinal cytoplasm. Xenopus laevis, Rana temporaria (Anura) b Cytological studies of the effects of ultraviolet irradiation on the germinal cytoplasm. Xenopus laevis (Anura) DABAGIAN (ERAMICHEVA), Mrs. N. V. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow. Lenin Hills, MOSCOW V-234, U.S.S.R. DADONE, L. A. — Cat. ..B" de Embriol.. Biol, e Histol.. Fac. de Cienc. Med.. Univ. Nac. de La Plata. 60 y 120. LA PLATA. Argentina DADOUNE. J. P. Dr.en Med. — Lab. d'Histol.-Embryol. B. Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France a Analysis of histogenesis in the cerebellum (use of antimitotics, ultrastructural study). Mus rattus (Rodentia) b Autoradiographic study of the Leydig cell in biopsies. Homo sapiens (Primates) DAEMEN, F. J. M. Ph.D. — Dept. of Biochem.. Univ. of Nijmegen, Kapittelweg 40, NIJMEGEN, Netherlands a Development of the rhodopsin cycle; rhodopsin, electroretinogram and morphology from birth till maturity. Canis domesticus (Carnivora) (in collaboration with S. L. BONTING) b Na-K-activated ATPase activity in developing retina of normal animals and of animals with hereditary retinitis pigmentosa. Rattus norvegicus (Rodentia) (in collaboration with S. L. BONTING) 41 DAGLIESH, G. — Dept. of Biol, and Morphol. Sci., Univ. of Calgary. CALGARY 44. Alta., Canada a Studies of the blastocyst. Mus musculus (Rodentia) DAHL, E. Prof. — Zootom. Dept., Zool. Inst., Univ. of Lund, Helgonavagen 3, S-223 62 LUND, Sweden DAIKOKU. S. M.D., Ph.D.. Prof. — Dept. of Anat., School of Med.. Tokushima Univ.. Kuramoto-cho 3, TOKUSHIMA. Japan a Experimental embryology of the endocrine organs. Rattus ratfus (Rodentia) b Embryology of the motor and sensory nerve terminals. Homo sapiens (Primates) DAILLIE. J. Dr.es Sci. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918. 69 VILLEURBANNE. France a Physiologic de la glande serigene. Bombyx mod (Lepidoptera) DALCQ, A. M. M.D., Prof. — U.R.E.D., Univ. libre de Bruxelles, 97 rue aux Laines, BRUXELLES. Belgium • DALLMAN, P. R. M.D. — Dept. of Pediat.. Univ. of California, San Francisco Med. Center, SAN FRANCISCO, Calif. 94122, U.S.A. a Heme proteins b Embryonic nutrition (biochemistry) DALTON, H. C. Ph.D., Prof. — Dept. of Biol., Coll. of Sci., Pennsylvania State Univ., 208 Life Sciences I, UNIVERSITY PARK, Pa. 16802. U.S.A. a Gene control of chromatophore development. Ambystoma mexicanum (Urodela) D'AMELIO. V. Ph.D.. Prof. — 1st. di Anat. Comp.. Univ. di Palermo, Via Archirafi 20. 90123 PALERMO, Italy • a Formation and structure of hemoglobin. Callus spec. (Aves) b Antigenic differentiation of red blood cell membrane. Callus spec. (Aves) DAMERON, Miss F. Dr.es Sci. — Inst. d'Embryol. Exper. du Coll. de France et du C.N.R.S., 11 Place M. Berthelot. 75 PARIS Ve, France a Morphogenese du poumon: 1. determinisme de I'apparition des ebauches (dissociation et reassociation, culture suivie de greffe). 2. moment d'apparition des structures specifiques des cellules de I'epithelium (ultrastructure). 3. influence de mesenchymes hcterologues sur I'ultrastructure de I'epithelium. Callus gallus (Aves) (en collaboration avec Mrs. L. MARIN (LEWIN)) DAN, Mrs. J. C. Ph.D. — Embryol. Sect.. Dept. of Biol.. Fac. of Sci.. Ochanomizu Univ., Otsuka-machi, Bunkyo-ku, TOKYO, Japan • DAN, K. Ph.D., Prof. — Tokyo Metropolitan Univ., 1-1 chome, Yakumo-machi, Meguro-ku, TOKYO, Japan • a Study on the cleavage furrow inducing capacity of the subcortical cytoplasm. Triturus spec. (Urodela) h Rhythm of SH fluctuation in the absence of cleavage. (Echinoidea) c Observation on the spawning habit since 1937. Comanthus japonica (Crinoidea) d Suppression of one cleavage cycle and precocious formation of micromeres and the SH cycle. (Echinoidea) DANCONA (LUNETTA), Mrs. G. Ph.D. — 1st. di Istol. ed Embriol., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy DANEHOLT, B. Med.kand. — Dept. of Histol., Karolinska Inst., S-104 01 STOCKHOLM 60, Sweden a Puff RNA metabolism in polytene chromosomes. Chironomus tentans (Diptera) DANIEL, J. C, Jr. Ph.D., Prof. — Inst, for Developm. Biol., Univ. of Colorado, BOULDER, Colo. 80302. U.S.A. DANIELI. G. A. Dr.biol.sci. — 1st. di Biol. Anim., Fac. di Sci., Via Loredan 10, 35100 PADOVA, Italy a Differentiation of salivary glands during larval development. Drosophila hydei (Diptera) DANKMEIJER, J. Med.Dr., Prof. — Anat.-Embryol. Lab., Fac. of Med., State Univ. of Leiden. Wassenaarseweg 62, LEIDEN. Netherlands • D'ANNA, T. Dr.nat.sci. — 1st. di Zool.. Univ. di Palermo, Via Archirafi 18, 90123 PALERMO. Italy a Enzyme activity in embryonic development. (Ascidiae) b Investigations on the respiratory metabolism during embryonic development. (Ascidiae) DANNEEL. R. Dr., Prof. — Zool. Inst, der Univ.. Poppelsdorfer Schloss, 53 BONN. W.Germany (no embryological work in progress) DARDA, S. H. Dr.rer.nat. — Zool. Inst, der Univ., Weyertal 119. 5 KOLN-Lindenthal, W. Germany a Autoradiographic investigations on protein synthesis and changes in cell volume in the regenerating limb. Triturus vulgaris (Urodela) b Protein metabolism in the epidermal apical cap. Triturus vulgaris, T. alpestris (Urodela) D'ASARO, C N. Ph.D. — Dept. of Biol, and Marine Sci.. Univ. of West Florida, PEN- SACOLA, Fla. 32504. U.S.A. 42 a Developmental morphology of tropical and subtropical marine forms (embryogenesis and organogenesis through metamorphosis). Bursa caelata. Distorsio clathrata, Batillaria minima. Bittiiim varium (Gastropoda) , Chione cancellafa, Codakia orbicularis, Atrina rigida (Lamel- libranchiata). Clypeaster rosaceus (Echinoidea) DASGUPTA. B. Ph.D., Prof. — Dept. of Zool.. Darjeeling Government Coll., North Bengal Univ., P.O. DARJEELING, W.Bengal, India a Reproduction and development. Raydla cayi, Hepatocystis spec. (Haemosporidia. Sporozoa) DAUGERAS. Miss N. — Lab. d'Anat. Comp.. Fac. des Sci. d'Orsay, Univ. de Paris, Bati- ment 441, 91-ORSAY, France , a Etude expcrimentale de I'apparition du glycogene hepatique chez 1 embryon. Gallus domes ficiis (Aves) DAUWALDER (RICHARDS). Mrs. M. Ph.D. — Cell Research Inst., B.L. 220. The Univ. of Texas at Austin, AUSTIN, Tex. 78712, U.S.A. a The development of tissues during embryogenesis with special reference to the differen- tiation of the Golgi apparatus and its activity in the secretion of specialized cell walls (electron microscopy, radioautography and EM enzyme cytochemistry). Zea mays (Gramineae) b Cell wall formation during mitosis. Zea mays (Gramineae) c Cleavage with emphasis on RNA metabolism and nucleolar changes. Helix aspersa (Pul- monata. Gastropoda) d The differentiation of the Golgi apparatus during differentiation of specialized cell types. Helix aspersa (Pulmonata, Gastropoda) DAVENPORT, R. Ph.D. — Dept. of Zool., Univ. of lUinois, URBANA, 111. 61801, U.S.A. a Electrophoretic and immunophoretic analysis of basic proteins during early embryonic development. Strong ylocentrotus purpuratus, Lytechinus variegatus (Echinoidea), Ciona intestinalis , Ascidia nigra (Tunicata ) DAVID (BOGLI). Mrs. D. Lic.es Sci. — Lab. de Biol. Anim., 1 Av. Vercingetorix. 63 CLERMONT FERRAND, France a Organogenese de I'estomac embryonnaire. Oryctolagus cuniculus (Lagomorpha) DAVID, G. Dr.en Med.. Prof. — Lab. d'Histol.-Embryol. A, Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie, France a Facteurs Rhesus. Homo sapiens (Primates) h Incompatibilites foeto-maternelles. Oryctolagus cuniculus (Lagomorpha), Ratfus spec. (Rodentia) DAVID, G. B. Ph.D. — Dept. of Biophys., Manhattanville Inst., Columbia Univ., 632 W. 125th St., NEW YORK. N.Y. 10027, U.S.A. DAVIDOVA, S. I. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133. U.S.S.R. a Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during maturation. (Acipenseridae, Chondrostei; Amphibia) (in collaboration with Mrs. T. A. DETTLAFF) DAVIDSON, E. H. Ph.D. — Rockefeller Univ., 66th St. and York Ave.. NEW YORK, N.Y. 10021, U.S.A. a Study of gene activity in oogenesis, the species and function of nucleic acids produced in lampbrush stage oocytes. Xenopus laevis (Anura) (in collaboration with Mrs. B. R. HOUGH-RAYMOND) b Study of the molecular basis of cytoplasmic prelocalization. Ilyanassa obsoleta (Gastropoda) (in collaboration with Mrs. B. R. HOUGH-RAYMOND) DAVIES, D. V. D.Sc. Prof. — Dept. of Anat., St. Thomas's Hosp. Med. School, LONDON S.E.I, England a Development of joints. (Mammalia) h Placentation. (Vertebrata) DAVIS, Ch. C. Ph.D., Prof. — Dept. of Biol., Mem. Univ. of Newfoundland, ST. JOHN'S, Newfoundland, Canada DAVIS, G. R. F. Ph.D. — Research Station, Research Branch, Canada Agriculture, Univ. Campus, SASKATOON, Sask., Canada a The quantitative and qualitative requirements of immature stages for amino acids and the intermediary metabolism of these amino acids. Oryzaephilus surinamensis (Silvanidae, Coleoptera), Melanoplus sanguinipes (Acrididae, Orthoptera), Ctenicera destrucor (Elat- eridae, Coleoptera) h The effects of anti-metabolites on development and morphology. Oryzaephilus surinamensis (Silvanidae, Coleoptera), Melanoplus sanguinipes (Acrididae, Orthoptera), Ctenicera de- structor (Elateridae, Coleoptera) DAVIS. L. V. Ph.D. — Dept. of Zool., Univ. of Hawaii, 2538 The Mall, HONOLULU, Hawaii 96822, U.S.A. DAWES, C. M. B.Sc. — Dept. of Physiol, and Biochem., Univ. of Reading, READING. Berks., England a Study of the methods by which the developing embryo is able to control the acid-base status of its blood under normal and experimental conditions. Gallus domesticus (Aves) 43 DAWID, I. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway. BALTIMORE. Md. 21210. U.S.A. • a Deoxyribonucleic acid synthesis during early development. Rana pipiens, Xenopus laevis (Anura) (in collaboration with R. F. SWANSON) DEALT, J. MUDr. — Anat. Inst. Univ. Bern, Buhlstr. 26, 3012 BERN, Switzerland a Development of coronary arteries under normal and experimental conditions. Gallus domesticus (Aves). Rattus norvegicus (Rodentia) h Heart morphometry. Gallus domesticus (Aves) Rattus norvegicus (Rodentia) DEAN, D. Ph.D., Prof. — Ira C. Darling Center for Research, (Marine Lab.), Univ. of Maine. WALPOLE, Me. 04573, U.S.A. a Anterior regeneration. Polydora ligni, Stceblospio benedicti, Pygospio elegans (Sedenfaria, Polychaeta) b Reproductive biology. Polydora ligni (Sedentaria, Polychaeta) DEARDEN, M. B.Sc. — Didsbury Coll. of Educ, Wilmslow Rd., MANCHESTER 20, England DE BAVAY. J. M. F. X. B.Sc. — Dept. of Zool., Fac. of Sci., Univ. of New England. ARMIDALE. N.S.W. 2351, Australia a Normal embryology. Kyacranus sphagnicolus (Leptodacfylidae, Anura) DE BEER, Sir G. R. Prof. — La Colline, 1880 BEX, Switzerland • DE BOOM. H. P. A. Prof. — Dept. of Anat.. Fac. of Vet. Sci.. Univ. of Pretoria, P.O. ONDERSTEPOORT, South Africa DECK. J. D. Ph.D.. Prof. — Dept. of Anat.. Med. School, Univ. of Virginia, CHARLOT- TESVILLE, Va. 22901, U.S.A. a Cytological changes in regenerating epithelium. Mus musculus (Rodentia) h Cytological changes in muscle after injury. Diemictylus viridescens (Urodela) c Origin and development of cell surface coats. Perophora viridis (Tunicata) DECKER, J. D. Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Missouri, COLUMBIA. Mo. 65201, U.S.A. a Development of the otocyjts and their influence on the ontogeny of behavior. Gallus domesticus (Aves) h Pre- and postnatal behavior (a film of the behavior during development within the marsupium). Didelphis virginiana (Marsupialia) DECROLY (BRIERS), Mrs. M. D.Sci.Chim. — Lab. de Morphol. Anim., Univ. libre de Bruxelles. 67. rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Metabolism des acides nucleiques au cours du dcveloppement embryonnaire. Xenopus laevis (Anura) b Etude des ribosomes au cours du dcveloppement. Xenopus laevis (Anura) c Mesure de la capacite template des acides ribonuclciques au cours du developpement em- bryonnaire, dans un systeme heterologue et un systeme homologue. Xenopus laevis (Anura) DE FABRO, Miss S. P. M.D.. Prof. — Inst, de Biol. Celular, Univ. Nac. de Cordoba, Casilla Postal 362, CORDOBA, Argentina DE FEO. V. J. Ph.D., Prof. — Dept. of Anat., Univ. of Hawaii, 1951 East- West Rd.. HONOLULU, Hawaii 96822, U.S.A. a Blastocyst-endometrial relationship. (Rodentia) b Decidualization. (Rodentia) De FOSSARD, R. A. Ph.D. — Dept. of Bot., Univ. of New England, ARMIDALE, N.S.W. 2351, Austraha a Physiology of flower initiation; development of bioassay for floral initiating substances based on in vitro culture of defoliated stem tips; histo- and cytochemical study of vegetative and reproductive apices. Chenopodium rubrum (Chenopodiaceae) DEGENHARDT, K.-H. Dr.med., Prof. — Inst, fiir Humangenetik und vergl. Erbpathol. der Univ., Paul-Ehrhch St. 41, 6 FRANKFURT/Main, W. Germany a Influence of antimetabolites (5-f]uoro-2-deoxycytidine) on pattern formation in early primordia of different inbred strains. Mus musculus, Mesocricetus auratus (Rodentia) b Influence of X-irradiation (dosages: 130 r, 65 r, 30 r, 15 r, 7 r) on pattern formation in early primordia of embryonic development. Mus musculus, Mesocricetus auratus (Rodentia) c Influences of chemical agents on blastogenesis. (Mammalia) DEGLI ESPOSTI, Miss A. M. Dr. — 1st. di Anat. Comp., Via Belmeloro 8, BOLOGNA (103). Italy DeHAAN. R. L. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway. BALTIMORE, Md. 21210, U.S.A. — Dept of Biol., Johns Hopkins Univ., Charles & 34th Sts., BALTIMORE, Md. 21218. U.S.A. • a Morphogenetic movements and cell migration associated with embryonic heart formation, studied with microsurgical, cinematographic and autoradiographic techniques. Gallus gallus (Aves) b Pacemaker formation and the initiation of the heartbeat; regulation of spontaneous activity of embryonic heart cells in tissue culture. Gallus gallus (Aves) 44 c Spatial organization and supracellular patterns in embryonic tissues. Gallus gallus (Aves) DE HOYOS, E. — Dept. of Pathol., Dartmouth Med. School, HANOVER, N.H. 03755, U.S.A. a Electron microscopy of developing islets of Langerhans. Mus musculus (Rodentia) DELEANU, M. Dr.med. — Centrul de Embriol. Norm, si Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Experimental syndactylism. Gallus domesticus (Aves) h Embryonic heterografts. Gallus domesticus (Aves) DELLA CROCE, N. Dr.Nat.Sci., Prof. — 1st. di Zool., Univ. di Genova. Via Balbi 5, GENOVA. Italy a Embryo development of a parthenogenetic marine form. Penilia avirostris (Cladoceca, Crustacea) (in collaboration with Mrs. S. BETTANIN-BELGRANO) b Growth of the embryo. Penilia avirostris (Cladocera, Crustacea) (in collaboration with Mrs. S. BETTANIN-BELGRANO) c Formation of resting eggs. Penilia avirostris (Cladocera, Crustacea) (in collaboration with Mrs. S. BETTANIN-BELGRANO) DELMAS, A. Prof. — Lab. d'Anat., Fac. de Med.. 45 rue des Sts. Peres, 75 PARIS Vie, France DeLONG, G. R. M.D. — Dept. of Neurol., Massachusetts Gen. Hosp., BOSTON. Mass. 20015, U.S.A. DEL RIO, A. G. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN. Argentina a Intermediate metabolism during early development; glycolysis. Bu}o arenarum (Anura) DE LUCA, V. M.D., Prof. — 1st. di Zool., Univ. di Catania, Via Androne 81. 95124 CATANIA, Italy a Physiological and experimental embryology of the earliest developmental stages. Porcellio laevis (Isopoda). Eyprepocnemis plorans (Orthoptera) DELYE (ROLLIN), Mrs. P. M. Lic.es Sci. — Lab. de Morphogenet. Anim., Fac. des Sci., Place Victor Hugo, 13 MARSEILLE 3, France DeMAGGlO, A. E. Ph.D. — Dept. of Biol. Sci., Dartmouth Coll., HANOVER, N.H. 03755, U.S.A. a Experimental developmental morphology. (Plantae) DENIS, H. A. Dr.es Sci. — Lab. de Biochim., Univ. de Liege. 17 Place Delcour. LIEGE. Belgium • a Etude du role des acides nucleiques dans la differenciation embryonnaire. Xenopus laevis (Anura) b Interactions nucleo-cytoplasmiques durant le developpement de I'oeuf. Arbacia lixula, Paracentrotus lividus (Echinoidea) DENIS, Miss S. Lic.Sci.Zool. — Lab. de Morphol. Anim., Univ. libre de Bruxelles. 67, rue des Chevaux, RHODE-ST-GENfiSE, Brabant, Belgium a Studies on the metamobism of lethal hybrids. (Echinoidea; Amphibia) DENKER, H.-W. — Arbeitsgr. Prof. G. H. M. Gottschewski am Max-Planck-Inst. fur Immunbiol., Stefan-Meier-Str. 8, 78 FREIBURG, W.Germany a Histochemistry of acid muco substances and enzymes in early stages (fertilization through implantation). Mus musculus. Rattus norvegicus, Mesocricetus auratus. Cavia cobaya (Rodentia) DENNE, M. P. Ph.D — Plant Physiol. Div., Dept. of Scient. and Industrial Research, PALMERSTON NORTH, New Zealand ^^ DENT, J. N. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia. Gilmer Hall. CHARLOTTES- VILLE, Va. 22903. U.S.A. a Metamorphic patterns. Various species (Amphibia) DEOL, M. S. Ph.D. — Dept. of Genet., Univ. Coll. London, Gower St., LONDON W.C. 1, England DEPARIS. P. Dr.Biol. — Lab. de Biol. Gener., Fac. des Sci., 118 Route de Narbonne. 31 TOULOUSE (04). France a Hematopoiese. (Urodela) DfiPECHE. J. — Lab. d'Evolution des Etres Organises, Fac. des Sci.. 105 Bd. Raspail. PARIS Vie, France a Physiological investigations on embryos of viviparous fishes developing in vitro. Poecilia reticulata (= Lebistes reticulatus). Xiphophorus helleri, Gambusia afiinis, Heteran- dria formosa (Poeciliidae, Teleostei) DE REGGI, L. M. Dr.Spec. — Sect, de Biol. Gen. et Appl.. Univ. de Lyon. 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Variations morphologiques et physiologiques dans le developpement, sous Taction de divers facteurs. (Phytophthires, Rhynchota) DEROM, R. M. J. M.D.. Ph.D. — Dept. of Obstet. and Gynecol.. Fac. of Med.. Univ. of Ghent. Aan de Bocht 6, GHENT, Belgium a Anaerobic metabolism in the fetus (determination of blood lactate and pyruvate; calcu- lation of "excess lactate"). Homo sapiens (Primates) 45 b Longitudinal study of uniovular twins (determination of genotype based on structure ol placental membranes and of differences in blood groups; followup on a long term basis). Homo sapiens (Primates) DESALU, A. B. O. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria DE SILVA, S. E. N. B.Sc. — Dept. of Biol. Sci., Fac. of Sci., Vidyodaya Univ., Gango- dawila, NUGEGODA, Ceylon a Morphological changes in the tail during metamorphosis. Bufo melanostictus (Anura) DESSOUKY D A. M.D., Ph.D. — Dept. of Anat., School of Med., Georgetown Univ., 3900 Reservoir Rd., N.W., WASHINGTON. D.C. 20007. U.S.A. DESVEAUX (CHABROL), Mrs. J. Lic.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Radioactive precursors incorporation in some embryonic tissues. Gallus domesticus (Aves) DE TERRA (WHITTAKER), Mrs. N. Ph.D. — Inst, for Cancer Research, 7701 Burholme Ave., PHILADELPHIA, Pa. 19111, U.S.A. a Morphogenesis and nucleo-cytoplasmic interactions studied by microsurgery, histochemistry and autoradiography. Stentor coeruleus (Ciliafa) DETTLAFF, Mrs. T. A. Dr.biol.sci., Prof. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R.. Vavilov St. 26. MOSCOW B-133, U.S.S.R. • a The nature of the specificity of oocyte nuclei in the process of oocyte maturation. (Amphibia) h Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during maturation. (Acipenseridae, Chondrosfei; Amphibia) (in collaboration with S. I. DAVIDOVA, J. G. SCHMERLING, M. N. SKOBLINA, T. B. AISENSTADT) c Time regularities of the maturation process; temperature effect upon maturation processes in vivo and in vitro. (Amphibia) (in collaboration with T. RUDNEVA) d Cell division: duration, mechanism, relation to the process of differentiation. Acipenseridae, Chondrosfei; Amphibia) DE TURENNE, Miss M. Dr.Spec. — Sect, de Biol. Gener. et Appl., Fac. des Sci. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Control of DNA synthesis in the silk gland during the fifth larval instar. Bombyx mod (Lepidoptera) DEUCHAJR, Miss E. M. Ph.D. — Anat. Dept., The Med. School, University Walk, BRISTOL BS8 ITD, England a Changes in individual cells during processes of neural induction and early differentiation studied by tissue culture and biochemical methods. Xenopus laevis (Anura) b Morphogenetic movements and tissue differentiation in primitive streak to somite stages studied by cinematography and operations in embryo culture. Rattus norvegicus (Rodentia) DEUTSCH. G. Dr.med. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M. Viteazul 24, TIMI§OARA, Rumania a Embryonic and adult kidney metabolism. (Mammalia) h Autoradiography in embryonic tissues. Gallus domesticus (Aves) DEVILLERS, Ch. Dr.es Sci., Prof. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint- Bernard, 75 PARIS 5e, France a Studies on respiration during early stages of egg development. Salmo irideus S. fario (Teleostei) (in collaboration with Mrs. M. CHANCONIE-MAURY) b Relationships between respiration and oxidative phosphorylations as shown by the action of 2-4 dinitrophenol and some inhibitors of respiration in early stages of egg development. Salmo irideus. S. lario (Teleostei) (in collaboration with Mrs. M. CHANCONIE- MAURY) DE VINCENTIIS, M. Prof. — Cat. di Istol. ed Embriol., Univ. di Camerino, CAMERINO, Italy • DHAINAUT, A. — Lab. de Zool., Fac. des Sci., B.P. 36, 59 LILLE-Distribution. France a Ovogenese; utltrastructure et autoradiographie a haute resolution. Nereis diversicolor, N. pelagica (Polychaefa) DHOUAILLY, Miss D. Dr. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France a Experimental analysis of the specific differentiation of the neoptile and teleoptile plumage in chimaeric combinations between two species. Gallus domesticus. Anas boschas (Aves) b Analysis of the differentiation of supernumerary limb; study of the plumage that develops thereon. Gallus domesticus. Anas boschas (Aves) DIAMOND, M. Ph.D., Prof. — Dept. of Anat., Univ. of Hawaii. 1951 East-West Rd., HONOLULU, Hawaii 96822, U.S.A. a Sexual differentiation and masculinization. (Mammalia) h Pseudopregnancy. (Mammalia) DiBERARDINO, Miss M. A. Ph.D., Prof. — Dept. of Anat., Woman's Med. Coll. of Pennsylvania, 3300 Henry Ave.. PHILADELPHIA, Pa. 19129, U.S.A. • a Nuclear, chromosomal and cytoplasmic changes during development. Rana pipiens (Anura) DICK, D. A. T. D.Phil. — Dept. of Anat.. Univ. of Dundee. DUNDEE DDl 4HN. Scotland. U.K. 46 J a Study of water and ion fluxes in oocytes. Bufo bufo (Anuca) DICKSON. A. D. M.D. — Div. of Morphol. Sci., Fac. of Med., Univ. of Calgary, CAL- GARY 44, Alta., Canada a Control and significance of trophoblastic giant cell transformation of the blastocyst. Mus musculus (Rodentia) h Hormonal secretion by unimplanted blastocysts. Mus musculus (Rodentia) DICKSON, D. H. M.Sc. — Dept. of Anat., Univ. of Western Ontario, LONDON, Ont., Canada a Electron microscopy of the developing eye. (Urodela) DIDIER (MARTIN), Mrs. E. Lic.es Sci. — Lab. de Biol. Anim., 1 Av. Vercingetorix, 63 CLERMONT-FERRAND, France DIEHL, F. A. Ph.D. — Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHARLOTTES- VILLE, Va. 22903, U.S.A. a Problems of development: cell and tissue migrations; the roles of individual cell types during morphogenesis; the synthesis of extracellular mesoglea and perisarc and their role in development. Cordylophora caspia (Hydcoidea) DIETERLEN (LIEVRE), Mrs. F. Dr.es Sci. — Inst. d'Embryol. exper. du Coll. de France et du C.N.R.S., 11 Place M. Berthelot, PARIS Ve, France • a Endoderm-mesenchyme interactions in the development of the pancreas: reassociation with heterologous mesenchymes (lung, gizzard or somatopleura) (organotypical cultures followed by coelomic grafts). Gallus gallus (Aves) b Inductive interactions in the early development of the spleen. Gallus gallus (Aves) c Enzyme development in heterologous reassociations (pancreatic epithelium + lung mesen- chyme). Gallus gallus (Aves) DI GRANDE, Miss F. Dr. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Giacomo 9, 40126 BOLOGNA, Italy a X-ray destruction of germ cells, sterile gonad development and sex differentiation. Bufo bufo, Rana dalmafina (Anura) DILLARD, W. Ph.D. — Max-Planck-Inst. fur Zellbiol., Anton-Dohrn-Weg, Postfach 1009, D 294 WILHELMSHAVEN, W.Germany a RNA-synthesis. Acetabularia spp. (Algae) DI MARCOTULLIO, A. D.Sc. — 1st. di Zool. e Anat. Comp., Univ. di Trieste, Via Alfonso Valerio, 32 TRIESTE, Italy a Regeneration and germ cell differentiation. (Planariidae, Turbellaria) DIMOND, Sister M. T. Ph.D., Prof. — Dept. of Biol., Trinity Coll., WASHINGTON. D.C. 20017, U.S.A. a Histogenesis and interrelations of endocrines: the hypophysis under normal conditions and after treatment with goitrogens; the developmental sequence of organic iodine compounds in the thyroid; ultimo-branchial body and calcitonin in bone development. Chelydra serpen- tina serp. and other spp. (Chelonia) DI STEFANO, L. Dr. — 1st. di Istol. ed Embriol., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy DOANE. Mrs. W. W. Ph.D. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. a Developmental and physiological genetics of isoamylases: analysis of genetic regulatory mechanisms in cellular differentiation as revealed through the combined techniques of biochemistry, genetics and cytogenetics. Drosophila melanogaster, D. hydei and other spp. (Diptera) b Developmental and experimental analysis of mutants characterized by abnormalities in lipid and carbohydrate metabolism, as well as in endocrine and reproductive physiology. Drosophila melanogaster (Diptera) DOBKIN, Sh. Ph.D. — Dept. of Biol. Sci., Florida Atlantic Univ., BOCA RATON, Fla., U.S.A. DOBROWOLSKI, J. M.Sc. — Dept. of Zool., Wyzsza Szko^a Pedagogiczna, ul. Podbrzezie 3, KRAKOW, Poland a Critical periods for simultaneous action of weightlessness and ionizing radiation on devel- opment. Cricetus auratus (Rodentia) h Influence of salinity. X-rays and temperature on larval development and assessment of critical periods. Salamandra salamandca (Urodela) c Embryo culture. Salamandra salamandra (Urodela) d Influence of temperature on sex ratio. Salamandra salamandra (Urodela) e Influence of salinity, temperature and combined action of weightlessness and X-rays on embryonic and larval development; morphogenetic effect, lethality and mechanisms of action. Xenopus laevis (Anura) DODSON, J. W. Ph.D. — Dept. of Zool., Univ. of Bristol, BRISTOL BS8 lUG, England a Secretory activity of larval epidermis. Ambystoma spec. (Urodela) DOERR (SCHOTT), Mrs. J. Dr.es Sci. — Lab. de Zool. et d'Embryol. Exper., Fac. des Sci.. Univ. de Strasbourg, 12 rue de I'Universite, STRASBOURG, France 47 EX)HERTY, R. A. M.D. — Dept. of Pediat., School of Med., Stanford Univ., 300 Pasteur Drive, PALO ALTO, Calif. 94304, U.S.A. a Temporal aspects of transcription in early embryos. Mus musculus (Rodentia) b Chromosomal mapping of transcription events during development. Miis mitscuhts (Rodentia), Homo sapiens (Primates) DOHLE, W. Dr.rer.nat. — L Zool. Inst, der Freien Univ., Kon.-Luise-Str. 1-3, 1 BERLIN 33, W.Germany a Embryology. (Diplopoda) b Embryology. Scutigera coleoptrata (Notostigmophora, Chilopoda) c Formation of anlagen by derivatives of teloblasts. Diastylis rathkei (Cumacea, Crustacea) DOLFINI, Miss S. D.Sc. — 1st. di Genet., Univ. di Milano, Via Celoria 10, 20133 MILANO, Italy a Development and cytology of cultured cells. Drosophila melanogaster (Diptera) DOLLANDER, A. Dr.en Med., Prof. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY, France • DOMAC (TESAR), Mrs. B. M.D., Sc.M.D. — Inst, of Histol. and Embryol., Fac. of Med., ZAGREB, Salata, Yugoslavia a Selective inhibitory effects of the hypophysis upon growth and differentiation of the adrenal glands in the fetus. Rattus norvegicus (Rodentia) DOMURAT, J. D.Sc. — Dept. of Ichthyol., Agric. Coll., OLSZTYN 5, Poland a Development of eggs in waterfree medium (paraffin oil). Salmo trutta, S. gairdneri (Teleostei) h The properties of perivitelline fluid of eggs developing in waterfree medium. Salmo trutta, S. gairdneri (Teleostei) c Changes in structure of embryos developing in waterfree medium. Salmo trutta, S. gaird^ neri (Teleostei) DONALDSON, W. E. Ph.D., Prof. — Poultry Sci. Dept., School of Agric. and Life Scis., North Carolina State Univ., Box 5307, RALEIGH, N.C. 27607, U.S.A. a The effects of maternal diet on embryonic fat metabolism (fatty acid biosynthesis, oxidation, and interconversion). Gallus domesticus, Cotucnix coturnix japonica (Aves) DONATO (CELI), Mrs. A. — 1st. di Zool. e di Anat. Comp., Fac. di Sci., Univ. di Messina. Via del Verdi 75, 98100 MESSINA, Italy a Vitellogenesis. Chromis chromis, Boops boops (Teleostei) h Cytochemistry of yolk globules in oocytes. Chromis chromis, Boops boops (Teleostei) DONGEN, C. A. M. van M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT, Netherlands a Protein differentiation during development studied by means of disc electrophoresis; descriptive and experimental. Limnaea sfagnalis (Gastropoda) DONNELLY, Miss G. — Depts. of Microbiol, and Biochem., Med. Center, Univ. of Ken- tucky, LEXINGTON, Ky. 40506, U.S.A. a Analysis of the physico-chemical properties of DNA in differentiating cells. Triturus viridescens (Urodela), Gallus domesticus (Aves), Mus musculus, Rattus rattus (Rodentia), Homo sapiens (Primates) (in collaboration with S. P. MODAK) DONNER, M. W. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. a Anatomical and radiological studies of circulation in the maternal placenta. Macaca mulatta. Homo sapiens (Primates) (in collaboration with H. R. MISENHEIMER and Miss E. M. RAMSEY) DOORENMAALEN, W. J. van M.D., Prof. — Dept. of Med. Anat. and Embryol., State Univ. of Utrecht. Janskerkhof 3A, UTRECHT, Netherlands • a Immunological and immunochemical investigations on lens proteins in induction and differentiation. (Aves), Homo sapiens (Primates) DORFMAN, A. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO. 111. 60637, U.S.A. a Biochemistry of connective tissues. DORGAN, W. J. Ph.D. — Dept. of Zool.-Entomol., Montana State Univ., BOZEMAN, Mont. 59715, U.S.A. a Age-related changes in rat placental giant cells in tissue culture. Rattus norvegicus (Rodentia) DORLE, A. K. Ph.D. — Post-Graduate Dept. of Zool., Univ. of Nagpur. NAGPUR, India DOSKOCIL, M. MUDr., D.Sc, Prof. — Dept. of Anat.. Charles Univ.. U nemocnice 3. PRAHA 2, Czechoslovakia a Experimental embryology of the hypophysis. Gallus domesticus (Aves) DOSSEL, W. E. Ph.D., Prof. — Electron Microscope Lab., Dept. of Anat., School of Med., Creighton Univ.. 657 North 27th St., OMAHA, Nebr. 68131, U.S.A. a The fine structure of endocrine organs of normal and hypophysectomized embryos. Gallus domesticus (Aves) h The fine structure of embryonic organs (descriptive). Gallus domesticus (Aves) 48 I c Studies on development of function and fine structure of mesonephric and metanephric kidneys, liver and pancreas. Gallus domesticus (Aves) DOTSU. Y. Dr.Agric. — Dept. of Aquatic Biol., Fac. of Fish., Nagasaki Univ., Bunkyo- machi 1-14, NAGASAKI, Japan DOTT, H. M. Ph.D. — A. R. C. Unit of Reprod. Physiol. 6 Biochem., Univ. of Cambridge, 307 Huntington Rd., CAMBRIDGE, England a Effect of irradiation of spermatozoa in vitro under various conditions on the devel- opment of eggs exposed to them. Orycfolagus cuniculus (Lagomorpha) DOUCET (DE BRUINE), Mrs. M. H. M. M.Sc. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1, Universiteitscentrum "De Uithof", UTRECHT. Netherlands a Induction of gastrulation. Ambystoma mexicanum (Urodela) DOUSOVA (SVEHLOVA), Mrs. M. M.D. — Lab. of Embryophysiol., Inst, of Physiol., Fac. of Gen. Med., Charles University, Albertov 5, PRAGUE 2, Czechoslovakia a Development of fetal brain tissue in tissue culture. (Aves; Mammalia) b Developmental effects of methionine-sulphoximine and related biochemical compounds upon the fetal brain tissue. (Aves) DOWNIE, J. R. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONEMDN W.C.I, England a Cell behaviour, mainly epithelial cells, in the expansion of the blastoderm. Gallus gallus (Aves) DRACHMAN, D. B. M.D., Prof. — Dept. of Neurol., Johns Hopkins Hosp., BALTIMORE, Md. 21205, U.S.A. a Development of joints and joint malformations. Gallus domesticus (Aves) h Development of motor end plates (neuromuscular junctions). Gallus domesticus (Aves) c Developmental neuropharmacology (transmitter substances). Gallus domesticus (Aves) d Trophic influence of motor neurons in developing muscle. Gallus domesticus (Aves). (Mammalia) DRAGOMIROV, N. I. Dr.biol.sci., Prof. — Inst, of Evol. Morphol. and Ecol. of Anim., Acad, of Sci. of the U.S.S.R., Lenin Ave. 33. MOSCOW- V-71, U.S.S.R. • DREICHLINGER, O. F. Dr.Chem.Sci. — Centrul de Embryol. Norm. §1 Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMIgOARA, Rumania a Normal and pathological respiration in embryonic tissue. Gallus domesticus (Aves) b Autoradiography in embryonic tissues. Gallus domesticus (Aves) DREYER, Miss M. V. M.Sc. — Dept. of Zool.. Univ. of the O.F.S., BLOEMFONTEIN, S.Africa a An histocytological and histocytochemical investigation on the epithelioneural bodies. Gallus domesticus (Aves) b The application of different stains (with differences of het pH) to detect the Nissl bodies in embryonic and adult neurons. Gallus domesticus (Aves), Lepus cuniculus (Lagomorpha) DRUKKER, J. Ph.D. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AM- STERDAM-O.. Netherlands a Descriptive and experimental studies of the developing central nervous system. Gallus domesticus (Aves) h Histochemical characteristics of developing chemoreceptor organs. Oryctolagus cuniculus (Lagomorpha) c Embryology of the endocrine cells of the pancreas. Gallus domesticus (Aves) d Light-microscopical, electron-microscopical, histochemical, physiological and experimental teratogenetic studies of heart development in the embryo. Gallus domesticus (Aves) (in collaboration with J. A. LOS, H. M. LAANE and F. J. BIESENBEEK) DOBENDORFER. A. dipl.phil.II — Zool.-Vergl. Anat. Inst.. Univ. Zurich, Kunstlergasse 16, CH 8006 ZURICH, Switzerland a Imaginal discs. Phormia regina (Dipfera) DUBEY. P. N. M.Sc. Prof. — Dept. of Anat.. Med. Coll., NAGPUR-3, M.S.. India a Peripheral nucleus (Hofmann's nucleus major) of the spinal cord. 1. Influence of periphery (limb) on its morphogenesis. 2. Cytoarchitecture. Gallus domesticus (Aves) h Differentiation of unipolar cells of spinal ganglion in tissue culture. Gallus domesticus (Aves) c The influence of the peripheral field on the morphogenesis of the anterior horn cells. Gallus domesticus (Aves) d Polydactyly — an experimental analysis. Gallus domesticus (Aves) e Regulatory process of mesoderm in limb morphogenesis; various presumptive areas at pre-axial and post-axial borders of limb bud/wing bud of stage 19-20 embryos are ablated. Gallus domesticus (Aves) (in collaboration with T.L. PATIL) DUBOIS. R. Dr. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Lignee germinale et morphogenese sexuelle. Gallus gallus (Aves) DUKE, E. J. Ph.D. — Zool. Dept., Univ. Coll., Stillorgan Road. DUBLIN 4. Ireland a Genetic and biochemical investigations of abnormal 5-fluorouracil resistance and strep- tomycin sensitivity in different strains; developmental stage concerned and biochemical mechanisms. Drosophila melanogastec (Diptera) 49 b Studies on the nature of dehydrogenase (mainly lactate and xanthine) regulation and expression at different stages of development. Salmo salar, S. trutta and hybrids (SaU monidae, Teleostei) DUKE, K. L. Ph.D., Prof. — Dept. of Anat., Duke Univ. Med. Center, DURHAM, N.C. 27706, U.S.A. a Comparative histology of the ovary (including developmental stages and history of germ cells). Cynocephalus volans, C. variegatus (Dermoptera), Tarsius tarsier (Primates) DUMONT, J. N. Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE. Tenn. 37830, U.S.A. a Cytological studies of the oocytes with special emphasis on early developmental stages and vitellogenesis. Xenopus laevis (Anura) h Electron microscopic studies of nucleolar changes during Wolffian lens regeneration. (Urodela) DUNCAN, D. Ph.D., Prof. (Emer.) — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex. 77550, U.S.A. a Quantitative studies on the development of myelin in the central nervous system; effects of long tract destruction before myelination. Raftus norvegicus (Rodentia), Felis domeS' tica (Carnivora) h Combined light and electron microscopic study of numbers and sizes of fibers and numbers and fine structure of the glia cells. Rattus norvegicus (Rodentia), Felis domestica (Carnivora) DUNCAN, J. T. Ph.D., Prof. — Dept. of Cell and Molec. Biol., School of Nat. Sci., San Francisco State Coll., SAN FRANCISCO, Calif. 94132, U.S.A. a Pigment cell migration and differentiation; developmental control of migration and pattern formation; developmental behavior of chromatophores and their immunological interactions in mixed populations of pigment cells from different species or from animals with different pigment pattern genotypes. Taricha torosa, Ambystoma mexicanum (Urodela) h Heart determination and differentiation; temporal and spatial patterns of control of heart development; isolation and characterization of intracellular materials controlling heart development. Taricha torosa, Ambystoma tigrinum (Urodela) DUNN, G. A. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONDON W.C.I, England a Behaviour and interactions of nerve fibres from spinal ganglia grown in tissue culture. Gallus gallus (Aves) DUPRAT (ESCUDIE), Mrs. A.-M. Dr.es Sci. — Lab. de Biol. Gener., Fac. des Sci., 118 Route de Narbonne, 31 TOULOUSE (04), France a Etude experimentale de la differenciation des cellules embryonnaires en culture in vitro. (Urodela) (en collaboration avec J. C. BEETSCHEN) DURAN DE LOPEZ, Mrs. L. M.D. — Cat. de Embriol., Fac. de Med., Univ. de Los Andes, MfiRIDA, Venezuela DURAND, J. P. — Lab. Souterrain du C.N.R.S., 09 MOULIS (Ariege). France DURANTE, Miss M. C. D.Sc, Prof. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy a Cholinesterase, dipeptidase and other enzymes in embryonic development. (Ascidiae; Pisces) b The biochemistry of regeneration. (Annelida) DURCHON, M. Prof. — Lab. de Zool., Fac. des Sci., Univ. de Lille, B.P. 36, 59 LILLE- Distribution, France • DUSPIVA, F. Dr., Prof. — Zool. Inst, der Univ., Physiol. Lehrstuhl, Berlinerstr. 15, 6900 HEIDELBERG, W. Germany • a Localization of enzymes within the embryo and in subcellular fractions. (Insecta; Am- phibia) b Protein differentiation, ontogeny of enzyme patterns. (Insecta; Amphibia) c Energy metabolism and metabolism of nucleic acids, nucleotides, cofactors during devel- opment. (Teleostei; Amphibia) d Cell-physiological mechanisms of malformation in early development. (Amphibia) DUTRIEU. Miss J. Dr.es Sci. — Lab. de Physiol. Gener., Fac. des Sci. de Bordeaux, Avenue des Facultes, 33 TALENCE, France a Metabolisme glucidolipidique au cours du developpement. Artemia salina (Anostraca, Crustacea). Calliphora erythrocephala (Diptera), Carausius morosus (Phasmidoptera) DUTTON, R. W. Ph.D., Prof. — Dept. of Biol., Univ. of Cahfornia, San Diego, P.O.Box 109. LA JOLLA, Cahf. 92037. U.S.A. a Development of immune system; in vitro differentiation of immunogenic response DWORKIN. M. Ph.D., Prof. — Dept. of Microbiol., Med. School, Univ. of Minnesota, MINNEAPOLIS, Minn. 55455. U.S.A. a Developmental biology of fruiting. Myxococcus xanthus (Myxobacteria) 1. Role and nature of a stable m-RNA required for microcyst germination 2. Regulation of macromolecular synthesis during development 3. Nature of proteins synthesized during germination 4. Mechanism of induction of microcyst formation 50 DWORNIK, J. J. Ph.D. — Dept. of Anat., Univ. of Louisville, 101 West Chestnut St., LOUISVILLE, Ky. 40202, U.S.A. a Effects of podophyllin and temperature on skeletal development (alizarin technique). Rattus norvegicus (Rodentia) b Effects of colchicine on skeletal development (alizarin technique). Rattus norvegicus (Rodentia) c Effects of hypervitaminosis A on tooth development (histochemical techniques). Mus musculus (Rodentia) d A study on tissues in the torpid mutant to determine if there are any differences between abnormal animals and normal litter mates. Mus musculus (Rodentia) DYLEVSKY, I. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a Prenatal development of muscles. Homo sapiens (Primates) DZIUBA. P. — Dept. of Gen. Biol.. Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE 8, Poland a Karyology of congenital malformations. Homo sapiens (Primates) h Palmar and plantar dermatoglyphics in congenital malformations and inherited diseases. Homo sapiens (Primates) c The influence of oestrogens on liver regeneration after partial hepatectomy. (Rodentia) EAKIN, R. M. Ph.D., Prof. — Dept. of Zool., Univ. of California, BERKELEY, Calif. 94720, U.S.A. • a Determination of neural plate, sucker and hypophysis. Hyla regilla (Anura) b Electron microscopy of induction systems. Hyla regilla (Anura) c Development of photoreceptors. Helix aspersa (Gastropoda) (and other Invertebrata) EAYRS, J. T. Ph.D., D.Sc, Prof. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston, BIRMINGHAM 15, England a Effects of hormones on central nervous development. Rodentia EBERT, J. D. Ph.D., Prof. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. — Dept. of Biol., Johns Hopkins Univ., Charles & 34th Sts., BALTIMORE, Md. 21218, U.S.A. • a The metabolic characteristics of the heart-forming areas of the early embryo. Gallus gallus (Aves) b The graft-versus-host reaction and development of immune mechanisms in the embryo. Gallus gallus (Aves) c Animal viruses (esp. tumor viruses) as tools in studying embryonic development. Gallus gallus (Aves) (in collaboration with R. J. HAY and Mrs. M. YOSHIKAWA-FUKADA) ECHAVE LLANOS, J. M. M.D., Prof. — Cat. "B" de Embriol., Biol, e Histol., Fac. de Cienc. Med., Univ. Nac. de La Plata, 60 y 120. LA PLATA. Argentina ECKSTEIN, P. M.D.. D.Sc. — Dept. of Anat.. Med. School. Univ. of Birmingham, Edg- baston, BIRMINGHAM 15, England a Mode of action of intra-uterine devices: 1. ovum recovery at critical stages of primate cycle. 2. composition of tubo-uterine secretions. 3. tissue reactions to intra-uterine materials. Oryctolagus cuniculus ( Lagomorpha) , Macaca mulatta, Papio papio (Primates, Mammalia) EDDS. M. v.. Jr. Ph.D., Prof. — Div. of Biol, and Med. Sci., Brown Univ., PROVIDENCE. J^.I. 02912. U.S.A. • EDli, D. A. Ph.D. — Embryol. Sect., A.R.C. Poultry Research Centre, King's Buildings, West Mains Rd., EDINBURGH 9, Scotland. U.K. a Analysis of the action of inherited abnormalities and lethal genes in development. Gallus gallus (Aves) b Experimental studies on limb bud development. Gallus gallus (Aves) c Cell adhesion and movement, and cell death and degeneration in normal and mutant embryos. Gallus gallus (Aves) EDSTROM, J.-E. — Dept. of Histol.. Karolinska Inst.. S-140 01 STOCKHOLM 60, Sweden a Intranuclear RNA metabolism of polytene nuclei. Chironomus tentans (Diptera) EDWARDS. J. G. Ph.D. — Dept. of Cell Biol., Univ. of Glasgow. GLASGOW W.2. Scotland. U.K. a Studies of the formation of cell adhesions in embryonic cells and cell lines grown in culture. using reaggregation techniques. EDWARDS. R. G. D.Sc. — Physiol. Lab., Univ. of Cambridge. Downing St.. CAMBRIDGE CB2 3EG. England, a Genetics and embryology of pre-implantation stages. Homo sapiens (Primates) and other Mammalia b Immunology of reproduction. Homo sapiens (Primates) and other Mammalia EFREMOVA, Mrs. S. M. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. a Morphology and biochemistry of somatic embryogenesis (microcinematography. histology. autoradiography). Ephydatia fluviafilis, Spongilla lacustris (Porifera) 51 EGAMI. N. Ph.D. — Div. of Biol., Natl. Inst, of Radiol. Sci., Anagawa 4-9, CHIBA, (280) Japan a Change in radiation-sensitivity during embryonic development. Oryzias latipes (Teleostei) b Embryology of endocrine organs. Oryzias latipes (Teleostei) c Effect of ionizing radiation on embryos. Oryzias latipes (Teleostei) EGELHAAF, A. Dr.rer.nat., Prof. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN- Lindenthal, W.Germany • a Genetische Grundlagen der Differenzierung von Augenpigmenten. Ephestia kuhniella (Lepidoptera) h Morphogenetische Genwirkungen. Ephestia kuhniella (Lepidoptera), Drosophila melano- gaster (Diptera) c Genetik und Physiologie der Blutproteine im Entwicklungsverlauf. (Insecta) EGUCHI, G. D.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ.. Chikusa-ku, NAGOYA, Japan EHN, J. A. Fil.Dr. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Effects of sulphydryl-blocking and other substances on development of the embryo. Agelena labycinthica (Arachnoidea) b Animalization and vegetalization of the embryo by means of chemical agents. Agelena labyrinthica (Arachnoidea) EICHER. Miss E. M. Ph.D. — Dept. of Biol., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER, N.Y. 14627. U.S.A. a Influence of nucleic acid analogues on development. Anagasfa ('= Ephestia) kiihniella (Lepidoptera) h Development of enzymes and proteins. Anagasta (= Ephestia) kuhniella (Lepidoptera) c Developmental consequences of chromosome rearrangements. Mus musculus (Rodentia) EIDMANN, H. H. Fil.Dr., Dr.phil.nat., Prof. — Dept. of Forest Entomol., The Royal Coll. of Forestry, S- 104 05 STOCKHOLM 50, Sweden a Physiology of postembryonic development and diapause; coldhardiness of developmental stages. Coleophora laricella (Lepidoptera), Hylobius abietis (Coleoptera) b Physiology of embryonic development. Carausius morosus (Cheleutoptera) EISENBERG (ZALIK), Mrs. S. Ph.D. — Dept. of Zool., Fac. of Sci., Univ. of Alberta, EDMONTON, Alta., Canada a Study of DNA synthesis during the process of lens regeneration. Tciturus viridescens (Ucodela) h In vitro culture of the lens regenerating system. Triturus viridescens (Urodela) c The cell cycle and its relation to differentiation in the lens regenerating system. Triturus viridescens (Urodela) d Cell contact and migration during gastrulation. Xenopus laevis (Anura) ELBERS, P. F. Ph.D. — Biol. Ultrastruct. Research Unit, State Univ., Janskerkhof 3, UTRECHT, Netherlands a Experimental morphology of cell membrane and cytoplasmic structures in early devel- opmental stages. Limnaea stagnalis (Pulmonata, Gastropoda) EL-EISHI, H. I. S. B.Ch. — c/o Prof. Shafik Aggaw, 24 Elnahdh St.. DOKI-CAIRO, Egypt ELGAMMAL, A. E. B.Sc. — Dept. of Zool., Ain Shams Univ., Fac. of Sci., Abassia. CAIRO, Egypt ELGER, W. M.D. — Schering AG., Mullerstrasse 170-172, 1-BERLIN 65. W.Germany a Experiments on sex differentiation, using androgens and antiandrogens; the possible occur- rence of two sex inductors. Oryctolagus cuniculus (Lagomorpha), Mus musculus, Rattus norvegicus (Rodentia) h Immunology of embryonic gonads. Oryctolagus cuniculus (Lagomorpha), Mus musculus, Rattus norvegicus (Rodentia) ELIAS, S. Dr.chem.Sci. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M.ViteazuI 24, TIMI5OARA. Rumania a Biochemistry of the subembryonic liquid. Gallus domesticus (Aves) h Biometry of the early developmental stages. Gallus domesticus (Aves) c Time lapse cinematography. Gallus domesticus (Aves) ELIASSON (KLEIN). Mrs. E. Fil.Dr. — The Wenner-Gren Inst.. Norrtullsgatan 16. S-113 45 STOCKHOLM, Sweden a Enzyme induction and repression, particularly arginase. Gallus spec. (Aves) h Induction and repression of enzyme synthesis in cells in tissue culture. (Mammalia) ELLIS, C. H., Jr. Ph.D. — Dept. of Biol., Amherst Coll.. AMHERST. Mass. 01002, U.S.A. a Developmental physiology and genetics; 1. involvement of larval spicule protein in the calcification process. 2. control of the synthesis of this protein (effects of dactinomycin and other inhibitors at various developmental stages). 3. spicule formation by dissociated and reaggregated embryonic cells. Strong ylocentrotus purpuratus, Arbacia punctulata, Lytechinus pictus (Echinoidea) h Developmental physiology: 1. study of ectodermalization and mesodermahzation (animal- ization and vegetalization) in embryos. 2. specific protein synthesis in normal and ex- 52 perimental developmental stages. 3. response to morphogenetically active agents at the level of gene expression. Strong ylocentrotus purpuratus (Echinoidea) ELMER. W. A. Ph.D. — Dept. of Biol., Emory Univ., ATLANTA, Ga. 30322. U.S.A. a Differentiation of eye lens fiber cells: 1. stability increase of the proteins which control the turning on of macromolecular synthesis. 2. control of various RNA species by the different regulator molecules. Bos taurus (Artiodactyla) h Genetic control of chondrogenesis on the macromolecular level in the creeper mutation (cell cycle times of genotypically different chondrocytes). Galltts domesticus (Aves) ELSDALE, T. R. Ph.D. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland, U.K. — Clin, and Popul. Cytogenet. Research Unit, Western Gen. Hosp., EDINBURGH, Scotland, U.K. a Morphogenesis in cell cultures. Homo sapiens (Primates) EMANUELSSON, H. Fil.Dr. — Zoophysiol. Inst., Univ. of Lund, Helgonavagen 3, 223 62 LUND. Sweden a DNA-synthesis and yolk formation during ovogenesis. Ophryotrocha labronica (Poly- chaeta) b Yolk-DNA metabolism during early embryogenesis. Ophryotrocha labronica (Polychaeta) c Biochemical and cytochemical analysis of intracellular yolk granules in early blastoderms with special regard to yolk DNA. Gallus domesticus (Aves) EMELIANOV, S. V. Dr.biol.sci., Prof. — A. N. Severtzov Inst, of Evol. Morphol. and Ecol. of Anim., Acad, of Sci. of the U.S.S.R., Lenin Ave. 33, MOSCOW W.71, U.S.S.R. a Heterochrony in appearance and rate of development of dorsal and anal fin elements (radialia, musculature, fin rays, fin folds). Salmo salar, Esox lucius, Tetragonopterus rufero- pictus, Rutilus rutilus, Callichthys [asciatus, Haplochilus pleferi, Perca fluviatilis, Atherina hepsetus (Teleostei) h Early postembryonic development and individual variability. Acipenser guldenstadtii. A. stellatus, A. nudiventris. Huso huso, (Chondrostei) EMERIT, M. Dr.es Sci. — Lab. de Zool., Fac. des Sci. de Montpellier, Place Eugene Bataillon, 34 MONTPELLIER, France a Embryonic and post-embryonic development. Gasteracantha spec, Isoxya spec, Acrosomo- ides spec. (Gasteracanthidae, Araneida, Arachnida) EMERY, J. L. M.D. — Depts. of Child Health and Pathol., Congenital Anomalies Res .Unit. Children's Hosp., Univ. of Sheffield, Western Bank, SHEFFIELD 10, England EMMERT, W. Dr.rer.nat. — Zocl. Inst. I, Fac. of Nat. Sci., Univ. of Wiirzburg,, Rontgen- ring 10, 87 WURZBURG, W.Germany a Postembryonic development and metamorphosis of holometabolic forms. Formica polyctena (Hymenoptera), Calliphora erythrocephala (Dipfera) ENDO. A. M.D. — Dept. of Hygiene, School of Med., Niigata Univ., NIIGATA-City, Japan ENDO, Y. D.Sc. — Dept. of Biol., Keio Univ., YOKOHAMA-Hiyoshi, Japan a Study of fertilization and development. (Echinoidea) b Electron microscopical study of oogenesis. (Echinoidea) ENEMAR, E. A. W. Prof. — Dept. of Zool., Univ. of Gothenburg, Fjarde Langgatan 7B S-413 05 GOTHENBURG. Sweden a Development of hypothalomo-hypophysial connections. (Tetrapoda) ENGELS, W. Dr.rer.nat. — Zool. Inst, der Westf. Wilhelms-Univ., Badestr. 9, 44 MON STER/Westf., W.Germany a Speed of yolk formation: composition of reserve proteins (radio-isotopical methods). Apis mellifeta (Hymenoptera) b Regulation and enzymatic conditions of glycogen synthesis in oogenesis (radio-isotopical methods). Musca domestica (Dipfera) ENGLAND, Mrs. M. A. B.A. — Dept. of Anat. and Embryol., Univ. Coll., Gower St., LONDON W.C.I, England a Primary neural induction. Gallus domesticus (Aves) b An electron microscopical and histochemical analysis of yolk formation. Gallus domesticus (Aves) (in collaboration with Mr. M. R. BELLAIRS) ENGLANDER, H. Dr.med., Dr.rer.nat., Prof. — Zool. Inst, der Univ.. Weyertal 119, 5 KOLN-Lindenthal, W. Germany • a Regionalspezifische Induktion. (Urodela) h Die Wirkung von Lithium auf die Differenzierungsleistung des Ektoderms (Urodela) c Disaggregation un Reaggregation von friihembryonalem Gewebe. (Urodela) ENNABLI, E. — Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie. France EPEL. D. Ph.D. — Dept. of Biol. Sci., Hopkins Marine Station. Stanford Univ., PACIFIC GROVE, Calif. 93950, U.S.A. a Biochemistry and physiology of fertilization, especially activation of enzymes (NAD kinase), formation of extracellular cements, and mechanism of lysis of cortical granules. Strong ylocentrotus purpuratus (Echinoidea) and other marine spp. (Invertebrata) 53 b Control of enzyme synthesis during development. Strong ylocentrotus purpucatus (Echino- idea) ERHART, E. A. M.D., Ph.D., Prof. — Sect, of Neuroanat.. Dept. of Anat., Univ. of Sao Paulo, Caixa Postal 2921, SAO PAULO, Brazil a Degeneration and regeneration of peripheral nerve fibres. Gallus domesticus (Aves), Canis familiaris (Carnivora) ERICSON (STRANDVIK), Mrs. B. Cand.Med. — Dept. of Histol., Karolinska Inst., Sol- navagen 1, STOCKHOLM 60, Sweden ERIKSSON, Miss M. M.D. — Lab. of Teratol., Karolinska Inst., S-104 01 STOCKHOLM 60, Sweden a Induced fetal damage late in pregnancy of special interest for animal tests of new drugs. Mas musculus (Rodentia) ERNSTROM, U. M.D. — Dept. of Histol., Karolinska Inst., Solnavagen 1, STOCKHOLM 60, Sweden ESCHENBERG, Miss K. M. Ph.D., Prof. — Dept. of Biol. Sci., Clapp Lab.. Mount Holyoke Coll., SOUTH HADLEY, Mass. 01075, U.S.A. a Cytology and developmental physiology of the ovary (histochemistry and autoradio- graphy). Getris remigis, Belosfoma llumineum, Ranatra fusca (Hemipfera) ESHEL, Mrs. Sh. M.Sc. — Dept. of Zool.. Hebrew Univ. of Jerusalem, JERUSALEM, Israel a The effect of injury on embryo formation in folded blastoderms. Gallus domesticus (Aves) ETKIN, W. Ph.D., Prof. — Dept. of Anat., Albert Einstein Coll. of Med., Yeshiva Univ., Eastchester Rd. and Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. ETOH, H. Dr.Agric. — Div. of Biol., Natl. Inst, of Radiol. Sci.. Anagawa 4-9-1, CHIBA, (280) Japan a Long term effects of low doses of ionizing radiation on various embryonic stages. Oryzias latipes (Teleostei) EVANS, H. E. Ph.D., Prof. — Dept. of Anat., Vet. Coll., Cornell Univ., ITHACA, N.Y. 14850, U.S.A. a General embryology. Canis familiaris (Carnivora) h Study of skeletal development in regard to inter-litter variation and position in the uterus, utilizing cesarian removals. Canis familiaris (Carnivora) c Veratrum induced cyclopia. Ovis aries (Artiodactyla) d Serial sections of embryos at spaced ages, available for inspection. Canis familiaris, Felis catus (Carnivora), Bos taurus, Ovis aries (Artiodactyla) EVANS, M. J. M.A. — Dept. of Anat. and Embryol., Univ. Coll., Cower St., LONDON W.C.I, England a Changes in messenger RNA associated with primary embryonic induction. Xenopus laeuis (Anura) b Study of teratoma cells in vitro. (Mammalia) c RNA metabolism in creeper (Cp) mutation. Gallus domesticus (Aves) EVREN, A. Dr. Vet. — Inst, of Histol. and Embryol., Vet. Fac, Ankara Univ., ANKARA, Turkey EWART, D. F. M.Sc. — Dept. of Embryol., Marischal Coll., Univ. of Aberdeen, ABER- DEEN AB9 IAS, Scotland, U.K. a Effect of rat liver RNA (characterized by polyacrylamide gel electrophoresis) on chick fibroblasts in vitro (electron microscopy). Gallus domesticus (Aves), Rattus nor- vegicus (Rodentia) EWEN, AL. B. Ph.D. — Research Station, Research Branch, Canada Agriculture, Univ. Campus, SASKATOON, Sask., Canada a Physiology and functional morphology of reproduction, with special emphasis on the endocrinology of reproduction in males. Melanoplus sanguinipes (Orthoptera) h Histology and histochemistry of neurosecretory cells and their cycles of activity. Melanoplus sanguinipes (Orthoptera) EYAL (GILADI), Mrs. H. Ph.D. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERU- SALEM, Israel • a Embryo formation in folded blastoderms. Gallus domesticus (Aves) b An attempt to alter the developmental direction of unincubated blastoderms by artificially creating multilayered systems. Gallus domesticus (Aves) EYRIES, Ch. Dr.en Med. — Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie, France FABER, J. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1, Universiteits- centrum "De Uithof", UTRECHT, Netherlands • a Gene action and differentiation of imaginal discs in homoeotic mutants. Dcosophila melano' g aster (Diptera) b Limb regeneration: 1. interactions between transplanted blastemal mesenchyme and wound epidermis. 2. regional organization in transplanted blastemas. Ambystoma mexicanum (Urodela) 54 FAINSTAIN (HAMERMAN), Mrs. N. B.Sc. — Dcpt. of Zool.. Hebrew Univ. of Jerusalem, JERUSALEM. Israel a The role of the endoblast in the heart formation. Gallus domesticus (Aves) FALEEVA. Miss T. I. — Biol. Inst., Leningrad State Univ.. LENINGRAD B-164, U.S.S.R. a Maturation of eggs, atresia of ovarian follicles, and regulation of these processes. Acipenser ruthenus, A. stellatus (Chondrosfei) , Rutilus rutilus, Pelecus cultratus (Cypriniformes), Acerina cernita. Maccopodus opeccularis, Hemichromis bimaculatus (Perciformes, Teleostei) FALEIRO PIMENTEL, Mrs. M. B.Sc. f — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288-4° andar. C.P. 253. BELO HORIZONTE. M.G.. Brazil (deceased) FALIN L I M.D., Prof. — Dept. of Histol. and Embryol., Moscow Stomatol. Inst., Kal- jaevskaiia 18, MOSCOW. U.S.S.R. a Development and cytodifferentiation of endocrine glands. Homo sapiens (Primates) h Origin and development of germ cells (histochemical techniques). Homo sapiens (Primates) c Development and innervation of teeth. Homo sapiens (Primates) FALLIERI. L. A. B.Sc. — Dept. de Biol. Geral. Inst, de Cienc. Biol, da U.F.M.G.. Rua Carangola 288 - 4°andar. C.P. 253, BELO HORIZONTE. M.G.. Brazil a DNA and nuclear size during postembryonic development (liver, salivary glands and prostata). Biomphalaria (= Austcalorbis) glabrata and other spp. (Pulmonata. Gastropoda) FALLON, J. F. Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON. Wis. 53706, U.S.A. a Cell death during limb morphogenesis. (Vertebrata) b Ultrastructure of the gametes before and during interaction. Nereis Hmbata (Potychaeta) FAMBROUGH, D. M., Jr. Ph.D. — Dept. of Embryol.. Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. a Ontogeny of nerve - muscle interactions. Rattus norvegicus (Rodentia) FANGHANEL. J. Dr.med. — Anat. Inst, der Univ. Rostock. Gcrtrudenstr. 9, 25 ROSTOCK 1. East.Germany a Experimentelle Untersuchungen zur Frage von Organ- und Schadelveranderungen auf Grund statischer Veranderungen in der Postnatelperiode (Amputation der Vorderextre- mitaten). Rattus norvegicus (Rodentia) FANKHAUSER. G. Ph.D., Prof. — Dept. of Biol.. Princeton Univ., PRINCETON, N.J. 08540, U.S.A. • a Effects of chloramphenicol on metamorphosis. (Urodela) FANTONI. A. M.D. — Lab. di Radiobiol. Anim.. C.S.N.-Casaccia. Casella Postale 2400, 00100 ROMA, Italy a Characterization of yolk sac erythropoiesis and liver erythropoiesis from 8th to 15th day of gestation; evidence for a different genetic expression in the two cell lines. Mus musculus (Rodentia) b Molecular biology of differentiation of yolk sac derived erythroid cells: 1. patterns of RNA, total protein and hemoglobin synthesis. 2. cell division in relation to hemoglobin synthesis and to the dependance of hemoglobin synthesis from continued mRNA synthesis. 3. synthesis of ribosomes, passage of ribosomal subunits from nuclei to cytoplasm during yolk sac erythroid differentiation. Mus musculus (Rodentia) FARAG, A. E. B.Sc. — Dept. of Zool., Ain Shams Univ.. Fac. of Sci.. Abassia, CAIRO, Egypt, U.A.R. FARBEROV, A. I. — Chair of Embryol., Biol. Fac. State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. ^ ^ FARGEIX, N. Dr.es Sci. — Lab. de Biol. Anim., 1 Av. Vercingetorix, 63 CLERMONT- FERRAND, France a Les cellules germinales chez I'embryon. (Aves) FARINELLA (FERRUZZA), Mrs. N. Dr.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy a The development of unfertilized aged eggs. (Ascidiae) b The development of fused eggs. (Ascidiae) c RNA synthesis. (Ascidiae) FAULHABER, Miss I. E. W. Ph.D. — Inst, fiir Physiol. Chemie, Freie Univ. Berlin. Amim- allee 22, 1 BERLIN 33, W.Germany a Isolation and biochemical characterization of the primary induction factor in the gastrula. Xenoptis laevis (Anura) h Protein and nucleic acid metabolism during the process of differentiation. Xenopus laevis (Anura), Triturus alpestris. Amby stoma mexicanum (Urodela) FAURfi-FREMIET, E. Dr., Prof.hon. — Lab. d'Embryol. Exper. du Coll. de France, Place M. Berthelot, 75 PARIS Ve, France • FAUSTOV, V. S. Cand.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. FAUTREZ, J. C. M.D., Prof. — Lab. of Anat., Univ. of Gent, Ledeganckstr. 35, GENT, Belgium * 55 FAUTREZ (FIRLEFYN), Mrs. N. J. — Lab. of Anat.. Univ. of Gent, Ledeganckstr. 35, GENT, Belgium FEDECKA-BRUNER, Mrs. B. Dr.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94 NOGENT-sur-Marne, France FEDINEC, A. A. Ph.D., Prof. — Dept. of Anat., College of Ba^ic Med. Sci., Med. Units, Univ. of Tennessee, 62 S. Dunlap St., MEMPHIS, Tenn. 38103, U.S.A. a Study of effect of bacterial toxins and pathogenic bacteria on the development of the fetus; relation between the routes of infection and barrier properties of placenta and fetal membranes. Rattus norvegicus (Rodentia) FEDOROFF. S. Ph.D., Prof. — Dept. of Anat., Univ. of Saskatchewan, SASKATOON, Sask., Canada a Cytogenetics b Cytogenetics and cytocidal systems c Development of cell surface antigens FELDMAN, M. Ph.D. — Dept. of Cell Biol., Weizman Inst, of Sci.. REHOVOTH, Israel • FELIX, J.-M. D.E.S. — Lab. de Physiol. Anim., Fac. des Sci., B.P. 347, 51 REIMS. France a Endocrine function of the foetal pancreas; insulin blood levels in the foetus and in the mother. Rattus norvegicus (Rodentia) (in collaboration with R. L. JACQUOT. B. C. J. SUTTER and Mrs. M. T. SUTTER (DUB)) FELL. Dame Honor B. Dr.. Prof. — Strangeways Research Lab., Wort's Causeway, CAMBRIDGE, England • FELTS. W. J. L. Ph.D.. Prof. — Dept. of Anat., School of Med., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. FENNELL, R. A. Ph.D., Prof. — Dept. of Zool., Michigan State Univ., EAST LANSING, Mich. 48823, U.S.A. FERM, V. H. M.D., Ph.D., Prof. — Dept. of Anat.-Cytol., Dartmouth Med. School, HANOVER, N.H. 03755, U.S.A. a Teratogenic effects of heavy metals. Mesocricetus auratus (Rodentia) b Experimentally induced twinning. Mesocricetus auratus (Rodentia) FERNANDEZ de RECONDO, Mrs. M. E. — Inst, de Invest. Bioquim., Fundacion Campo- mar, Obligado 2490, BUENOS AIRES. Argentina FERREIRA. A. L. M.D.. Ph.D. — Dept. de Morfol. Hum. Func. e Aphc, Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, Caixa Postal 301, RIBEIRAO PRfiTO. S.P.. Brazil (no embryological work in progress) FERRIER, V. Lic.es Sci. — Lab. de Biol. Gener., Fac. des Sci.. 118 Route de Narbonne, 31 TOULOUSE (04). France a Hybridation intergenerique. (Urodela) b Gynogenese. Pleurodeles waltlii (Urodela) FESZT, T. M.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure§ of the Acad. of the S.S.R., Str. Gh. Marinescu 38. TIRGU-MURE§, Romania FICQ, Mrs. A. A. D.Sc, Prof. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Etude autoradiographique du metabolisme au cours de I'oogenese. Asterias spec. ( Asteroidea, Echinodermata) , Rana spec. (Anura) b Observations autoradiographiques sur I'oogenese et la morphogenese. Pleurodeles spec. Triturus spec. (Urodela), Rana fusca (Anura) c Studies on metabolism during maturation. Asterias rubens, Arbacia lixula, Paracentrotus lividus (Echinodermata) , Pleurodeles waltlii (Urodela) d Effects of actinomycin D and histones on early differentiation of oocytes. Xenopus laevis (Anura) e DNA synthesis during early oogenesis. Xenopus laevis (Anura) FILOGAMO, G. M.D.. Prof. — Dept. of Anat., Univ. of Turin, Corso M.D'Azeglio 52, 10126 TORINO, Italy • a Histogenesis of the intramural plexuses. (Mammalia) h Development of olfactory placode. (Mammalia) FILONI, S., Dr.Biol.Sci. — 1st. di Anat. Comp. "Battista Grassi", Fac. di Sci., Univ. di Roma, Via A. Borelli 50. 00161 ROMA, Italy a Regeneration of central nervous system. Xenopus laevis (Anura) FILOSA, M. F. Ph.D., Prof. — Dept. of Zool., Scarborough Coll., Univ. of Toronto, WEST HILL. Ont., Canada FIMIAN, W. J.. Jr. Ph.D., Prof. — Dept. of Biol., Boston Coll.. CHESTNUT HILL 67, Mass., U.S.A. FINE. M. H. Ph.D. — Charles F. Kettering Research Labs.. 150 E. South College St.. YELLOW SPRINGS, Ohio 45387, U.S.A. a Differentiation of tracheary elements in tissue cultures, especially hormonal control of secondary wall formation and lignogenesis. Eucalyptus camaldulensis (Myrtaceae) FINGER, I. Ph.D., Prof. — Dept. of Biol., Haverford Coll., HAVERFORD, Pa. 19041. U.S.A. a Immunogenetic studies in relation to cell differentiation. Paramecium aurelia (Ciliata) 56 FINNEGAN. C. V. Ph.D.. Prof. — Dept. of Zool., Univ. of British Columbia, VAN- COUVER 8. B.C.. Canada a Analysis of postgastrula axial mesoderm differentiation in vitro. Taricha torosa, Ambystoma gracile (Urodela), Gallus domesticus (Aves) b Cytochemical and electron microscopic examination of myoblast, endo- and ectomesen- chymal differentiation. Taricha torosa, Ambystoma gracile (Urodela) c Molecular and cellular aspects of arm formation in larvae. Strong ylocentrotus dcoebachien- sis, S. purpuratus, S. franciscanus (Echinoidea) (in collaboration with D. H. LARRIVEE) d Development of alkaline phosphatase activity in embryos; biochemical analysis (specific activity, gel electrophoresis) and histochemical analysis. Ambystoma gracile, Taricha torosa (Urodela) (in collaboration with D. H. O'DAY) e The effects of L-tyrosine and L-phenylalanine in the in vitro differentiation of the early (24-32 hr.) neural crest: the frequency of pigment cell differentiation in various concentrations of the two amino acids and an electron microscopic examination of the cultured cells. Gallus domesticus (Aves) (in collaboration with A. J. WIREN) FIORONI, P. P.D., Dr.phil. — Zool. Anstalt der Univ., Rheinsprung 9. 4000 BASEL, Switzerland a Development of integument (chromatophores, shell), nervous system, coelom and yolk sac (including electron microscopy). Io%o spec. Alloteuthis spec, Sepiola spec, Sepietta spec. Sepia spec. (Decapoda), Eledone spec. Octopus spec. (Octopoda, Cephalopoda), and others b Morphological problems of embryonic nutrition (yolk, albumine, food eggs) and transitory larval organs. (Gastropoda) c Morphological problems of embryonic nutrition and transitory larval organs. (Malacos- traca, Crustacea) d Histological normal tables of development. (Cephalopoda, Gastropoda, Crustacea) FIRKET, H. M.D., Ph.D., Prof. — Lab. d'Anat. Pathol., Fac. de Med., Univ. de Liege. 1 rue des Bonnes- Villes, LIEGE, Belgium (no embryological work in progress) FIRTEL. R. A. B.A. — Dept. of Developm. Biol., Div. of Biol., Calif. Inst, of Technol.. PASADENA, Calif. 91109, U.S.A. FISCHBERG. M. Dr.phil., Prof. — Station de Zool. Exper., Univ. de Geneve, Route de Malagnou 154, Chene-Bougeries. GENEVE, Switzerland • FISCHER, A. Dr.rer.nat. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN-Lindenthal, W. Germany a Inheritance of eye colour in laboratory stock; maternal effect on the eye colour in juvenile mutants. Platynereis dumerilii (Polychaeta) FISCHLSCHWEIGER, W. Ph.D. — Dept. of Histol. and Embryol., Coll. of Dent. Surg.. Univ. of Maryland, Lombard and Green St., BALTIMORE, Md. 21201. U.S.A. FISCHMAN. D. A. MD. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago. CHICAGO. 111. 60637. U.S.A. a Biosynthesis and assembly of contractile proteins. FISHER, D. B. Ph.D. — Dept. of Botany. Univ. of Georgia, ATHENS, Ga. 30601. U.S.A. a Fertilization and embryogenesis. Gossypium hirsutum (Malvaceae) FITCH, F W. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago. CHICAGO. 111. 60637, U.S.A. a Cell interactions in immune response. FITZGERALD, L. R. Ph.D., Prof. — Dept. of Anat., College of Basic Med. Sci., Med. Units, Univ. of Tennessee. 62 S. Dunlap St., MEMPHIS, Tenn. 38103, U.S.A. a Effects of environmental factors and antibiotics on development of teeth, and control mechanisms of tooth formation. Mus musculus (Rodentia) b Cytology of amniotic fluid: sources of the various types of cells, and relation of changes in these types to normal or abnormal development. Homo sapiens (Primates) FLAMM, H. M.D., Prof. — Hygiene Inst., Med. Fac, Univ. of Vienna, Kinderspitalgasse 15. Postfach 23. A-1095 VIENNA. Austria a Infections of the blastocyst by viruses: fate of the blastocyst and embryo, duration of presence of the virus in the blastocyst. Oryctolagus cuniculus (Lagomorpha) h Infections of fetus and placenta. Homo sapiens (Primates) FLEISCHHAUER. K. Dr.med.. Prof. — Anat. Inst, der Univ. Bonn. Abt fiir Neuroanat., Nussallee 10, 53 BONN, W.Germany a Postnatal development of neuroglia. Felis domestics (Carnivora), Homo sapiens (Primates) b Postnatal development of various subcortical regions and of the spinal cord. Felis domestics (Carnivora), Homo sapiens (Primstes) c Reaction to injury of nervous tissue, particularly neuroglia, during postnatal development. Felis domestics (Carnivora) FLICKINGER, C. J. M.D. — Inst, for Developm. Biol., Univ. of Colorado, BOULDER, Colo. 80302, U.S.A. FLICKINGER, R. A. Ph.D., Prof. — Dept. of Biol., State Univ. of New York, 102 Health Sci. Bldg., BUFFALO, N.Y. 14214. U.S.A. • 57 FLINT, O. P. B.A. — Embryol. Sect., A.R.C. Poultry Research Centre, King's Buildings, West Mains Rd., EDINBURGH 9, Scotland, U.K. a Behaviour and differentiation of normal and mutant limb mesenchyme cells in vitro. Gallus gallus (Aves) FLYNN, T. THOMSON D.Sc, Prof. — Address unknown • FOLLENIUS, E. Dr.es Sci. • — Lab. de Zool. et d'Embryol. Exper., Univ. de Strasbourg, 12 rue de I'Universite, STRASBOURG, France FOOTE, Mrs. F. MARTINDALE Ph.D. — Dept. of Physiol., Southern Illinois Univ., CARBONDALE, 111. 62901, U.S.A. • a Growth and maintenance of gonads of metamorphosing larvae in organ cultures. Xenopus laevis (Anura) h Growth and maintenance of gonads on synthetic media, and on standard media composed of chick embryo extract and agar. Xenopus laevis (Anura) c Growth of avian thymus in vitro. Gallus domesticus (Aves) FORD, P. Ph.D., Prof. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada a Developmental histochemistry. Raja binoculata (Selachii) b Development of the tail, employing isolates in vitro. Ambystoma gracile (Urodela) c Microspectro-photometric studies on enzyme concentrations in development. Raja binoculata (Selachii) d Ultrastructure of the development of the yolk sac. Raja binoculata (Selachii) (in col- laboration with Mrs. E. J. HALL) FORD. P. J. D.Phil. — Natl. Inst, for Med. Research, Mill Hill, LONDON N.W.7, England a The synthesis of proteins by ovary in organ culture. Xenopus laevis (Anura), Mus musculus (Rodentia) b The structure and function of ribosomes during cell differentiation. Xenopus laevis (Anura) FORET. J. E. Ph.D. — Dept. of Zool.. Univ. of New Hampshire, DURHAM, N.H. 03824. U.S.A. a Radioautographic studies of limb regeneration. Ambystoma spec. (Urodela) b In vitro cultivation of larval and adult tissues and regeneration blastema. Ambystoma spec. (Urodela) c Cellular origin of spinal cord reconstitution. Ambystoma spec. (Urodela) FORNI, Miss S. Med.Dott. — 1st. di Istol. ed Embriol. Gen., Univ. di Milano, Via Ponzio 7, MILANO, Italy FORREST, H. S. Ph.D., Prof. — Dept. of Zool., The Univ. of Texas. AUSTIN, Tex. 78712, U.S.A. a Analysis of DNA and RNA synthesis and changes in pteridines in developing eggs. On- copeltus fasciatus (Hemiptera) FORSBERG, J.-G. Prof. — Inst, of Anat., Univ. of Bergen. BERGEN, Aarstadvollen, Nor- way a Studies on regulative mechanisms behind epithelial differentiations in the genital region b Studies on the antigen content of the Miillerian epithelium c Influence of antiandrogenic substances on the differentiation of the male genital tract d Heterologous transplantation FORTAK, W. M.D. — Dept. of Histol. and Embryol., Acad, of Med., ul.Narutowicza 60. EODZ, Poland a Comparative morphochemical studies on the development of the adrenal gland. Xenopus laevis (Anura), Rattus norvegicus (Rodentia) h The distribution and activity of some hydrolytic enzymes in various tissues and organs during metamorphosis and embryogenesis. Xenopus laevis (Anura), Rattus norvegicus (Rodentia) c Comparative studies on the development of local hypersensitivity reactions in the skin (electron microscopic and immunohistological techniques). Rana esculenta (Anura), Cavia cobaya (Rodentia), Homo sapiens (Primates) d Histologic and histochemical studies on adrenal gland regeneration. Rattus norvegicus (Rodentia) FOSSARD, R. A. de M.Sc. — Dept. of Bot., Univ. of New England, ARMIDALE, N.S.W., FOSTER, M. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104, U.S.A. a Pigment genetics. Mus musculus, Peromyscus maniculatus (Rodentia) b Blood group inheritance and antibody synthesis. Mus musculus (Rodentia) FOURCHE, J. Dr.es Sci. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Le metabolisme respiratoire au cours du developpement. Drosophila melanogaster (Diptera), Bombyx mori (Lepidoptera) FOURNIER, B. Dr.Biol.anim. — Lab. de Zool. Exper.. Fac. des Sci. de Bordeaux. Av. des Facultes. 33 TALENCE. France 58 a Recherches descriptives et expcrimentales sur la morphogencse embryonnaire des appendices. Carausius spec. (Cheleutoptera) FOWLER. J. A. Ph.D. — Dept. of Biol., State Univ. of New York at Stony Brook. STONY BROOK, N.Y. 11790. U.S.A. a Development of hybrids. Rana pipi/ens (Anura) h Developmental controls (genetic, environmental). Oryzias lafipes (Teleosfei) FOX, A. S. Ph.D.. Prof. — Dept. of Genet., Coll. of Agric. Univ. of Wisconsin, MA- DISON, Wis. 53706, U.S.A. FOX, H. Ph.D., D.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St.. LONDON W.C.I. England a Investigation of growth and degeneration of the pronephric system by electron microscopy. (Anura) h Grafting experiments in larvae, of pronephros and mesonephros under hypo- and hyper- thyroid conditions. Rana temporaria (Anura) c Investigation of haploid and diploid tissues by electron microscopy (in collaboration with Miss L. HAMILTON, Middlesex Hospital Medical School, London). Xenopus laevis (Anura) d Tail degeneration (electron microscopy). Rana temporaria (Anura) FRAGATA, M. Ph.D. — Dept. of Plant Sci., Fac. of Agric. Univ. of Manitoba, WIN- NIPEG 19, Manitoba, Canada a Effects of auxins and cytokinins on embryo development. (Gramineae) FRANCHI, L. L. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston, BIRMINGHAM 15, England a Fine structure of normal and irradiated male and female germ cells. (Rodentia; Primates) b Structure and function of chromosomes in oocytes in relation to radiosensitivity. (Mam- malia) FRANCIS, D. W. Ph.D. — Dept. of Zool., Univ of British Columbia, VANCOUVER 8. B.C., Canada a Study of the overall character of the sequence of gene controlled processes during cell differentiation, using the enzyme complement of developmental mutants. (Acrasiales) b Effect of 3', 5'-adenosine monophosphate (cyclic AMP) on ion transport. Dictyostelium discoideum (Acrasiales) (in collaboration with Miss YEA-YUAN CHI) c Microspectro-photometric analysis of pseudoplasmodial differentiation. Dictyostelium di's- coideum (Acrasiales) (in collaboration with R. M. HUNTER) FRANgOlS, Y. Dr.es Sci., Prof. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint-Bernard, 75 PARIS 5e, France a Development of paired fins. (Teleostei) h Development of vertebrae. Polypterus spec. (Dipnoi), (Teleostei) c Growth of embryo. (Teleostei) d Evolution of bone structures. (Osteichthyes) FRANK, G. H. D.Sc. — Dept. of Zool.. Univ. Coll., Private Bag 4001, DURBAN, S.Africa a A study of certain aspects of the development of the chondrocranium and osteocranium, with special reference to the morphology of the sound conducting apparatus. Crocodilus niloficus (Crocodilia) FRANKEL. J. Ph.D., Prof. — Dept. of Zool.. Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Morphogenesis. Tetrahymena spec. (Holotricha, Ciliata) FRANKLIN, L. E. Ph.D. — Delta Region. Primate Research Center, Tulane Univ., COVINGTON, La. 70433, U.S.A. a Electron microscope studies of gametes and fertilization. (Annelida; Echinodermata; Mammalia) FRANZeN, a. S. Fil.Dr. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Comparative study of the spermatozoon and spermatogenesis. (Invertebrata) b Larval development. ( Brachiopoda; Entoprocta) FRASCHINI, Miss A. Ph. D.. Prof. — Inst, of Histol. and Embryol.. Univ. of Pavia, Piazza Botta 10, 27100 PAVIA, Italy a Enzyme histochemistry of yolk sac. Callus domesticus (Aves) b Studies on larval gastric epithelium. Rana esculenta (Anura) c The cutaneous glands in metamorphosis (histochemical methods). Rana esculenta (Anura) d Histology, histochemistry and enzymology of the yolk sac (stages: 2 cm, 7 cm and onwards). Scyliorhinus stellaris (Selachii) e Histology and histochemistry of granular glands of larval and adult skin. Siredon mexicanum (Urodela) ERASER, F. C. Ph.D., M.D., F.R.S.C, Prof. — Human Genet. Sect., Dept. of Genet., McGill Univ., MONTREAL, Que.. Canada ERASER. R. C. Ph.D., Prof. — Dept. of Zool. and Entomol., Univ. of Tennessee, KNOX- VILLE, Tenn. 37916, U.S.A. a Biosynthesis of hemoglobins in the embryo and characteristics of embryonic erythroid cells. Gallus domesticus (Aves) 59 FRATELLO. B. D.Sc. — 1st. di Anat. Comp.. Univ. di Modena, Via Berengario 14, 41100 MODENA, Italy a Cellular growth and mitotic ratio in peripheral nervous system. (Amphibia) h Developmental biology. Acerentomon microrhinus (Protura. Insecfa) c Proteolytic pattern in the developing digestive apparatus. Rana spec. (Anura). Trituras spec. (Urodela), Gallus domesticus . Columba spec. (Aves) FREED. J. Ph.D. — Inst, for Cancer Research, 7701 Burholme Ave., PHILADELPHIA, Pa. 19111, U.SJ^. a Genetics of haploid embryo cell lines including analysis by nuclear transfer. Rana pipiens (Anura) (in collaboration with Mrs. L. MEZGER-FREED) b Motility and ultrastructure of cultured cells. Rana pipiens (Anura). Tcifurus viridescens (Urodela) FREEMAN, G. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109. LA JOLLA. Calif. 92037, U.S.A. a Regeneration and asexual reproduction FRENCKELL, M. von Lic.es Sci. — Lab. de Biochim., Univ. de Liege, 17 Place Delcour, LIEGE, Belgium a Mecanismes biochimiques de I'oogenese. Xenopus laevis (Anura) FRETTER, Miss V. Ph.D., D.Sc. — Dept. of Zool., Fac. of Sci.. Univ. of Reading. London Road, READING. Berks. RGl 5AQ. England a Veliger larvae of coastal waters: structure, feeding, food requirements, digestion, structural changes at metamorphosis. Many spp. (Pcosobranchia, Gastropoda) FRIANT, Mrs. M. Dr.es Sci., Dr. en Med., Prof. — Ecole d'Anthropologie, 1 Place d'lena, PARIS XVIe, France a Development of the skeleton. (Reptilia; Aves; Mammalia) h Development of the teeth. (Mammalia) c Development of the brain. (Mammalia) d Development of pterylosis. (Aves) e Development of cartilage, bone and horn. (Vertebrafa) f Development of Meckel's cartilage. (Mammalia), Homo sapiens (Primates) FRIED (MONTAUFIER), Mrs. M. C. D.E.S. — Lab. de Genet. Evol. et de Biometrie, C.N.R.S.. 91 GIF-sur-YVETTE. France a Glande androgene et evolution cycHque de I'hermaphrodisme non fonctionnel de la gonade du male. Talifrus saltator (Amphipoda, Crustacea) FRIEDKIN. M. E. Ph.D.. Prof. — Dept. of Biol., Univ. of California. San Diego, P.O. Box 109. LA JOLLA. Calif. 92037. U.S.A. a Biochemistry of microtubular systems in relation to development of nerve tissues b Action of pharmacological agents on development FRIEDLANDER, M. Ph.D. — Lab. of Genet.. Hebrew Univ., JERUSALEM, Israel a Differentiation and function of the apyrene sperm; histochemical and electron microscope study of testes and genitalia of the inseminated female. Bombyx mori (Lepidopteca) FRISTROM. Mrs. D. Ph.D. — Dept. of Zool.. Univ. of CaHfornia, BERKELEY, Calif. 94720, U.S.A. a Fine structure of imaginal discs. Drosophila melanogaster (Diptera) FRISTROM, J. W. Ph.D. — Dept. of Genet., Univ. of California, BERKELEY, Calif. 94720, U.S.A. FRITZ. H. I. Ph.D. — Dept. of Biol.. Div. of Sci. and Engin.. Wright State Univ., Col. Glenn Highway, DAYTON, Ohio 45431, U.S.A. a The role of the egg white in the development of the embryo. Gallus domesticus (Aves) h Embryonic nutrition. (Chelonia), Gallus domesticus (Aves), Didelphis marsupialis, Cal- uromys derbiana, Marmosa spec. (Marsupialia) c Experimental teratogenesis. Gallus domesticus (Aves), (Marsupialia; Placentalia) FROHLICH, J. M.D. — Lab. of Embryophysiol., Inst, of Physiol.. Fac. of Gen. Med.. Charles Univ.. Albertov 5. PRAGUE 2. Czechoslovakia a Biochemical analysis of membrane ATP-ase system in developing fetal brain tissue. (Aves) FRYE, B. E. Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104, U.S.A. FUJII, R. Ph.D. — Div. of Biol.. Natl. Inst, of Radiol. Sci.. Anagawa 4-9-1. CHIBA. (280) Japan a Physiological studies on the changes in the responsiveness of melanophores during em- bryonic development. Salmo irideus (Teleostei) FUJII. T. Ph.D.. Prof. — Zool. Inst.. Univ. of Tokyo. Hongo 7-3, Bunkyo-ku. TOKYO. (113) Japan • a The mechanism of chemical carcinogenesis. Rattus norvegicus (Rodentia) FUJISAWA. H. M.Sc. — Lab. of Developra. Biol.. Zool. Inst.. Fac. of Sci., Univ. of Kyoto, KYOTO. Japan PUKE. M. D.Sc. — Biol. Inst.. Fac. of Sci., Univ. of Kanazawa, Marunouchi-1. KANA- ZAWA. Japan a Reaggregation of dissociated cells. Callyspongia elongata (Porifera) 60 b Cytological properties of polar lobe. Ostrea gigas ( Lamellibranchia) FUKUDA, S. D.Sc. Prof. — Biol. Inst, of Sci.. Nagoya Univ., Chikusa-ku, NAOUYA, FUKUsl^I, T. M.Sc. — Marine Biol. Station, Tohoku Univ. at Asamu-sfii, AOMORI-City, FUIXER, M. S. Ph.D., Prof. — Dept. of Botany, Univ. of Georgia, ATHENS, Ga. 30601, U.S.A. _ , . , a Development of motile cells in aquatic species. AUomyces cystogenes (baprolegniales, Phycomycefes) h Mitosis. (Fungi) aitc-^tm FULLILOVE, Miss S. L. Ph.D. — Dept. of Zool., Univ. of Texas at Austin, AUbllN, Tex. 78712, U.S.A. a Developmental aspects of embryonic lethals. Drosophila spec. (Diptera) h Patterning of morphogenetic information during oogenesis (techniques: ovary trans- plantation and isotopic labeling of developing oocytes). Drosophila spec. (Diptera) c Heart development as studied by analyses of in vitro interactions between inducing and responding tissues. Taricha torosa (Ucodela) FULTON, C. M. Ph.D. — Dept. of Biol., Brandeis Univ., WALTHAIvl, Mass. 02154, U.S.A. a Cell differentiation during ameba-to-flagellate transformation, with emphasis on the initiation of transformation and the morphogenesis of new organelles, especially flagella and basal bodies. Naegleria gruberi (Protozoa) FURUSAWA, M. D.Sc. — Lab. of Embryol., Fac. of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a Immunological studies on the nature of male and female. Mus musculus (Rodpntia) h Studies on the species-specific antigenicities on the cell membrane. Mas musculus (Rod- entia) c Immunological analysis of the structural molecules of the erythrocyte membrane. Mus musculus (Rodentia) GABAJEVA, Mrs. N. S. Cand.biol.sci. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. o r t. £ / ;, i a Genesis and functional role of egg membrane. Rana temporana. Bufo bufo (Anura), Testudo graeca, T. horsfieldi (Chelonia). Lacerta saxicola, L. agilis. L. ameniaca, L. rostambeca, Agama caucasica (Lacertilia), Bos taurus, Ovis aries. Sus domesticus (Artio- dactyla) ti , t- ij- h Immunity of embryo. Rana temporaria. Bufo bufo (Anura). Testudo graeca, I . horsfteldt (Chelonia), Lacerta saxicola, L. agilis. L. armeniaca, L. rostambeca. Agama caucasica (Lacertilia). Bos taurus, Ovis aries, Sus domesticus (Artiodactyla) GABELLA, G. M.D. — Dept. of Anat., Univ. of Turin, Corso M.D'Azeglio 52, 10126 TORINO, Italy , ,l. u • * a The organization and development of intestinal intramural nerve plexuses (histochemistry, electron microscopy, tracer studies). Rattus norvegicus (Rodentia) GABIE (GUBBAY), Mrs. V. Ph.D. — Dept. of Zool., Univ. of the Witwatersrand, Milner Park, JOHANNESBURG, S.Africa a Studies on neural crest cells in vitro. 1. Technique of culturing. 2. Staging of pigment cells. 3. Effect of thyroxine on differentiation of pigment cells. 4. Autoradiographic study of the relation between histones and RNA synthesis. Xenopus laevis (Anura) (in collab- oration with Miss A. ANDREW, Dept. of Anat.) GABRIEL-ROBEZ (KREMER), Mrs. O. Dr.en Med. — Inst. d'EmbryoI., Fac. de Med., 1 Place de I'Hopital, STRASBOURG, France a Chimioteratogenese. (Aves; Mammalia) GAGE L P Ph.D. — Dept. of Embryol, Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. a Biochemical studies of early development. Xenopus laevis (Anura) (in collaboration with D. D. BROWN) GAILLARD, J. A. M.D. — Dept. of Pathol.. Central Lab., Centre Hospitalier Region., rue Saint-Louis, 27 EVREUX, France a Embryonic tumors; germs cell tumors; dysembryomas of ovary and testis; blastemal tumors. Homo sapiens (Primates) b Comparative developmental morphology of embryoids and first stages of normal ova. Homo sapiens (Primates) c Extra-embryonic structures in embryomas. Homo sapiens (Primates) GAILLARD, P. J. M.D., Prof. — Lab. for Cell Biol, and Histol., Fac. of Med., State Univ., Rijnsburgerweg 10, LEIDEN, Netherlands • a Hormones and bone development (organ culture, enzyme chemistry, isotope techniques, electron microscopy). Callus domesticus (Aves). Mus musculus (Rodentia) GALASSI, L. D.Sc. — Dept. of Physiol., Tufts Univ., 136 Harrison Ave., BOSTON, Mass. GALL, J. G. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Ck)nn. 06520, U.S.A. • 61 a Synthesis of RNA and DNA during oogenesis; nuclear morphology; emphasis currently on nucleoli and ribosomal RNA production. Tritutus viridescens, Ambystoma mexicanum, Xenopus laevis (Amphibia) b Amplification of genes coding for ribosomal RNA during oogenesis. Xenopus laevis (Anura) GALLERA, J. D.Sc. — Lab. d'Embryol. Exper., Inst. d'HistoL, Univ. de Geneve, 20 rue de I'Ecole de Medecine, 1211 GENEVE 4, Switzerland • a Mechanisms involved in the induction process. Gallus domesticus (Aves) h Action of actinomycin D on ectoblast competence and inductive power of Hensen's node. Gallus domesticus (Aves) c Comparison between the inductive capacities of the presumptive endoblast and mesoblast cells located in the primitive streak. Gallus domesticus (Aves) d Meaning of the period of latency inserted between the induction time and the beginning of neurulation. Gallus domesticus (Aves) GALLIEN, L. Dr.es Sci., Prof. — Lab. d'Embryol., Fac. des Sci. de Paris, 9 quai St. Bernard, 75 PARIS Ve, France • GALSTON, A. W. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ.., NEW HAVEN, Conn. 06520, U.S.A. a Analysis of molecular basis for the developmental roles of indole-3-acetic acid and of light (absorbed by phytochrome). Pisum sativum (Papilionaceae) GAMBLE, H. J. Ph.D. — Dept. of Anat., St. Thomas's Hosp. Med. School, LONDON S.E. 1, England a Development of peripheral nervous tissues in the foetus. Homo sapiens (Primates) h Development of spinal cord in the foetus (electron microscopy). Homo sapiens (Primates) GANGULY, B. Ph.D. — Dept. of Zool, Presidency Coll., CALCUTTA-12, W.Bengal, India GANGULY, D. N. Ph.D. — Cell Research Unit, Dept. of Zool., Univ. of Calcutta, 35 Ballygunje Circular Rd., CALCUTTA-19, India GARAVINI, Mrs. C. Dr. — 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, BOLOGNA (103), Italy GARBER (BILSKY), Mrs. B. B. Ph.D. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Epithelial-mesenchymal interactions in embryonic development. GARCIA AUSTT, E. M.D., Prof. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de Clinicas, MONTEVIDEO, Uruguay a Influence of uterine contractions on fetal EEG. Homo sapiens (Primates) GARCIA-BELLIDO, A. Ph.D. — Sect. Developm. Genet., Inst, of Genet, and Anthropol.. Velazquez 144, MADRID 6, Spain a Clonal analysis of wing imaginal disc development in situ and in culture; effect of genetic recombination of mutations on further clonal development. Drosophila melanogaster (Dip- tera) b Nature of the specificity of cell recognition in cell aggregates of imaginal discs; cell affinities of normal versus mutant genotypes. Drosophila melanogaster (Diptera) GARDENGHI, G. Dr. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Giacomo 9, 40126 BOLOGNA, Italy a in vitro culturing of larval gonads. Bufo bufo (Anura) b Hormonic regulation of ovarian and Bidder's organ oogenesis. Bufo bufo (Anura) GARGOUIL, Y. M. Dr.es Sci., Prof. — Lab. de Physiol, anim., Fac. des Sci., Univ. de Poitiers, 40 Av. de Recteur Pineau, 86 POITIERS, France a Electrophysiology of embryonic heart and muscles; study of the development of membrane properties. Ambystoma tigrinum (Urodela), Cavia porcellus, Rattus norvegicus (Rodentia) h Histology and electron microscopy of the embryonic heart. Rattus norvegicus (Rodentia) GARROD, D. R. B.A. — Dept. of Biol, as applied to Med., The Middlesex Hosp. Med. School, LONDON W.l, England a Morphogenetic movement and cell adhesion. Dictyostelium discoideum (Acrasiales) GARWEG, G. Dr.med. — Anat. Inst, der Univ.. fur Neuroanat., Nussallee 10, 53 BONN, W.Germany a Ontogenesis of the brain. Mus musculus (Rodentia) GASC, J. M. Lic.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a X-ray damages on embryonic intestine at biochemical level. Gallus domesticus (Aves) b Evolution of the DNA-like RNA during embryonic development. Xenopus laevis (Anura) GASSER, F. Dr.Biol. — Lab. de Biol., Gener., Fac. des Sci., 118 Route de Narbonne, 31 TOULOUSE (04), France a Differenciation de diverses categories de proteines au cours du developpement; etude cytochimique et electrophoretique. (Urodela) GASSER, R. F. Ph.D. — Dept. of Anat., Louisiana State Univ., 1542 Tulane Ave., NEW ORLEANS, La. 70112, U.S.A. a The development of the trigeminal nerve. Papio spp. (Primates) h The development of the parotid gland around the facial nerve. Homo sapiens (Primates) 62 c A sectional atlas of embryonic stages. Homo sapiens (Primates) GATES A. H. Ph.D. — Dept. of Gynecol, and Obstet., School of Med., Stanford Univ., PALO ALTO. Calif. 94304, U.S.A. GAUTHIER, Miss G. F. Dr. — Lab. of Cell. Biol., Dept. of Biol. Sci., Wellesley Coll., WELLESLEY, Mass. 02181, U.S.A. a Postnatal differentiation on three fiber types in skeletal muscle (electron microscopy and histochemistry). Rattus noruegicus (Rodentia) (in collaboration with Miss H. A. PADY- KULA and Miss J. M. TAYLOR) b Differentiation of neuromuscular junctions in skeletal muscle (electron microscopy and histochemistry). Rattiis noruegicus (Rodentia) (in collaboration with Miss H. A. PADY- KULA and Miss J. M. TAYLOR) c Ovarian-uterine-placental relationship (electron microscopy and histochemistry). Didelphys virginiana (Marsupialia) (in collaboration with Miss H. A. PADYKULA and Miss J. M. TAYLOR) d Lipid transport by the yolk sac placenta (electron microscopy and histochemistry). Rattus noruegicus (Rodentia) (in collaboration with Miss H. A. PADYKULA and Miss J. M. TAYLOR) GAY, Miss H. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104, U.S.A. a Molecular structure of chromosomes during genetic activity, with special reference to nucleic acids and proteins of heterochromatin and euchromatin (studied by electron micro- scopy, cytochemistry, autoradiography and biochemistry). Haplopappus gracilis (Com- positae). Vicia faba (Leguminosae). Drosophila melanogaster (Diptera) GAYER, J. Dr. — Dept. of Biol., Med. Fac, Charles Univ., Simkova 870, HRADEC KRALOVfi, Czechoslovakia a Myogenesis (fusions, multinuclearity) in vitro studied by phase-contrast microscopy and time-lapse cinematography. Gallus domesticus (Aues), Mus musculus (Rodentia) b Myogenesis in vitro studied with RNA autoradiography. Gallus domesticus (Aues), Mus musculus (Rodentia) c Nucleolus during myogenesis in vitro studied by phase-contrast time-lapse cinemato- graphy. Gallus domesticus (AuesK Rattus noruegicus (Rodentia) (in collaboration with V. PUZA and M. HROCH) GAYET, J. F. D.Sc, Prof. — Lab. de Physiol. Gener., Fac. des Sci., 15 Place Carnot, 54 NANCY, France (no embryological work in progress) GAZE, R. M. Ph.D. — Physiol. Dept., Med. School, Univ. of Edinburgh, Teviot Place, EDINBURGH 8, Scotland, U.K. a Functional aspects of regeneration of the optic nerve. Xenopus laeuis. Rana tempocaria (Anura) h Cellular changes in tectum and eye after optic nerve section. Triturus cristatus (Urodela) c Functional results of tectal grafting. Carassius auratus (Teleostei) d Development of visual connections in embryos. Xenopus laeuis (Anura) GEBHARDT, D. O. E. Ph.D. — Dept. of Pharmacol., Rijks Inst, voor de Volksyezondheid, Sterrenbos 1, UTRECHT, Netherlands a The action of drugs on embryonic development. Gallus gallus (Aues), Mus musculus (Rodentia) h The action of drugs on limb regeneration. Ambystoma mexicanum (Urodela) c The embryotoxicity of anti-kidney serum and its localization by immunofluorescence. Mus musculus (Rodentia) GEDALIA I. PhD. — Lab. of Oral Chem. and Fluoride Research, Fac. of Dental Med., The Hebrew Univ., Hadassah Med. School, P.O.B. 1172, JERUSALEM, Israel (no embryological work in progress) GEHRING, W. J. Ph.D., Prof. — Dept. of Anat. Yale Univ., NEW HAVEN, Conn. 06510, U.S.A. a Developmental biology of imaginal discs. Drosophila spp. (Diptera) b Cell heredity in cultures of imaginal discs. Drosophila melanogaster (Diptera) c Biochemical studies on differentiation in disc cells. Drosophila melanogaster (Diptera) d Studies on mutants interfering with disc development. Drosophila melanogaster (Diptera) GEIGY, R. Dr., Prof. — Schweiz. Tropeninst., Socinstr. 57, 4051 BASEL, Switzerland — Zool. Anstalt der Univ., Rheinsprung 9, 4000 BASEL, Switzerland a Spermatogenese, Ovogenese, Embryonalentwicklung und Endocrinologie. (Ixodoidea, Acar- ina, Arachnoidea) (in collaboration with A. AESCHLIMANN) b Ubertragung von Spirochaetosen iiber das mutterliche Ovarium auf die Embryonen und damit auf die Nachkommen der nachsten Generation. (Argasidae, Acarina, Arachnoidea) (in collaboration with A. AESCHLIMANN) GEILENKIRCHEN, W L. M. Ph.D. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT. Netherlands a Metabolism and respiration of egg and embryo. Limnaea stagnahs (Gastropoda) h Influence of various kations on development. Limnaea stagnalis (Gastropoda) 63 c Analysis of mechanisms of cytodifferentiation in cleaving eggs. Limnaea stagnalis (Gastro- poda) d Germinal localization in eggs. Dentalium spec. (Scaphopoda); Patella spec. (Gastropoda) GENIS-GALVEZ, J. M. Med.Dr., Ph.D., Prof. — Dept. de Anat., Fac. de Med., Univ. de Granada, GRANADA, Spain GEORGE. J. C. Ph.D., Prof. — Dept. of Zool., Univ. of Guelph. GUELPH, Ont., Canada GEORGES, Miss D. Dr.spec. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France a Development of the gonads: role of the neural complex and other factors in spermatogenesis and oogenesis. Ciona intesfinalis (Ascidiae) b Development and cyclic changes in the neural gland; morphological, physiological and ultrastructural study. Ciona intestinalis (Ascidiae) GEORGIEV. G. P. Dr. — Inst, of Molec. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 32, MOSCOW V-312, U.S.S.R. • GfiRARD, H. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY, France GERARD, Miss M. J. Lie. et D.E.A. — Lab. de Biol. Gen.. Fac. des Sci., B.P. 347, 51 REIMS, France GERLINGER, P. Dr.en Med. — Inst. d'Embryol., Fac. de Med., 1 Place de I'Hopital, STRASBOURG, France a Etude de la formation des constituants de I'oeuf GERISCH, G. Dr.rer.nat. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 7% FREI- BURG, W.Germany a Chemotaxis, Induktionswirkung von Aggregationszentren. Dictyostelium minutum (Acra- siales) b Zellkontaktbildung, Zelldifferenzierung, Entwicklungsdefekte bei Mutanten. Dictyostelium discoideum (Acrasiales) GERKEN, Miss S. E. B.Sc. — Dept. de Zool., Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4° andar, C.P. 253, BELO HORIZONTE, M.G., Brazil GERNEKE, W. H. D.Sc. — Dept. of Anat., Fac. of Vet Sci., Univ. of Pretoria, P.O. ONDERSTEPOORT, South Africa GERZELI, G. Prof. — 1st. di Anat. Comp., Univ. di Pavia, Piazza Botta 10, 27100 PAVIA, Italy a Electron microscopical studies on the oocytes containing polyphenolic substances. Thy' sanozoon brocchii (Polycladidea. Turbellaria) h Egg-shell formation and vitelhn cells (histochemical, histomorphological and biochemical). (Plathelminthes) c Allantois and urinary bladder (histochemical and histomorphological). (Chelonia) GEUSKENS, M. D.Sc.Zool. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Etude par microscopie electronique et autoradiographie a haute resolution, de I'influence des constituants cytoplasmiques sur la transcription des genes au cours du developpement embryonnaire. Xenopus laevis (Anura), Pleurodeles waltlii (Urodela). Ilyanassa obsoleta (Gastropoda) GEYER (DUSZYl^SKA), Mrs. I. Dr. — Dept. of Anat., Cornell Univ., 1300 York Ave.. NEW YORK, N.Y. 10021, U.S.A. GEZELIUS. N. G. B. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Studies with labelled precursors of the correlations between protein synthesis and morpho- logical development and of the interactions between nucleus and cytoplasm. Paracentrotus lividus. Psammechinus miliaris (Echinoidea) GHIRARDELLI, E. Prof. — 1st. di Zool. e Anat. Comp., Univ. di Trieste, Via Alfonso Valerio, 32 TRIESTE, Italy a Germ cell differentiation. (Planariidae. Turbellaria) b Germ cell differentiation. (Bidder's organ differentiation). Bufo bufo (Anura) c Germ cell determinant. Spadella cephaloptera (Chaetognatha) GIANNETTI, A. M.D. — Dept. of Dermatol., School of Med., Univ. of Pavia, Polichnico S. Matteo, 27100 PAVIA, Italy a Mucoproteins in fetal skin. Homo sapiens (Primates) h Developmental changes of glycosaminoglycan content in fetal epidermis. Homo sapiens (Primates) GIBLEY, C. W., Jr. Ph.D. — Pennsylvania Coll. of Podiat. Med., 804 Pine St., PHILA- DELPHIA, Pa. 19107, U.S.A. a Histochemistry and fine structure of the developing excretory system. Rana pipiens (Anura), Gallus domesticus (Aves), Mus musculus (Rodentia) h Histochemistry and electron microscopy of differentiating experimentally induced renal carcinomas. Mesocricetus auratus (Rodentia) GIBSON, I. Ph.D. — School of Biol. Sci., Univ. of East Anglia, Wilberforce Rd., NOR- WICH, NOR 88C. England 64 a Nuclear-cytoplasmic interaction in single cells. Paramecium aurelia (Ciliata) h Techniques of nucleic acid hybridization as applied to developing systems. Echinus esculenfus, Asterias vulgaris (Echinodermata), Xenopus laevis (Anura). Gallus domesticus (Aves) GIDHOLM, L. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Larval development. (Syllidae. Polychaeta) GIHR, Miss M. Dr.phil. — Hirnanat. Inst, der Psychiatr. Univ. Klinik Bern, 3072 OSTER- MUNDIGEN-BE, Switzerland a Ontogenesis of the brain. (Cetacea) GILBERT, P. W. Ph.D., Prof. — Div. of Biol. Sci., Cornell Univ.. ITHACA, N.Y. 14850, u.s.a'. • GILBERTSON, D. E. Ph.D. — Dept. of Zool., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. a Metabolism of nucleic acids and proteins in larvae. Schistosoma mansoni (Trematoda) GILES, E. T. Ph.D., D.I.C. — Dept. of Zool., Fac. of Sci., Univ. of New England, ARMI- DALE, N.S.W. 2351, Australia a Postembryonic development of reproductive organs and genitalia. Labidura riparia truncata (Dermaptera) GILLOT (PERDRIX), Mrs. S. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Etude autoradiographique du metabolisme des acides nucleiques dans les noyaux en- dopolyploides. Drosophila melanogaster (Diptera), Bombyx mori. Galleria mellonella (Lepidoptera) GINSBURG, Mrs. A. S. Dr.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Cytological, electron microscopical and experimental investigations of the fertilization process. Ostrea gigas (Lamellibranchia), Acipenser guldenstadti. A. stellatus (Chondrostei), Lebistes reticulatus (Teleosfei) GINSBURGER-VOGEL, T. Agr. — Lab de Genet. Evol. et de Biometrie, C.N.R.S., 91 GIF-sur-YVETTE, France a Recherche sur la determination genetique du sexe et de I'intersexualite. Orchestia gam- marellus (Amphipoda, Crustacea) GINZBURG. G. I. Cand.biol.sci. — Lab. of Biochem., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. GIOVANNINI, E. Dott. — 1st. di Biol. Gener., Fac. di Med., Via del Giochetto, 06100 PERUGIA, Italy a Ruolo del rene e della milza nel controllo dell'eritropoiesi. Oryctolagus cuniculus (Rodentia) GIPOULOUX, J.-D. Dr.es Sci. — Lab. de Biol. Anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, 33 TALENCE, France a Etude experimentale de la morphogenese de I'appareil genital. (Anura) b Evolution des cellules germinales. (Anura) c Etude de I'ultrastructure embryonnaire. (Anura) GIRARD (DECHAMBE), Mrs. C. Dr.en Biol.anim. — Lab. de Biol. Anim., Fac. des Sci. de Bordeaux, 351 Cours de la Liberation, 33 TALENCE, France a Modalites et facteurs de formation de I'ostium et de I'oviducte. (Anura) b Modalites de la metamorphose de I'appareil excreteur. Rana dalmatina, Bufo bufo (Anura) GIRARD, H. Lic.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Physiologic cardio-vasculaire de I'embryon: action de substances vaso-actives (substances adrenergiques en particulier) et de gaz respiratoires. Gallus gallus (Aves), Rattus nor' vegicus, Cavia cobaya (Rodentia) GIROUD, A. Prof. — Lab. d'Histol.-Embryol. B. Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France • a Recherches sur I'influence teratogene des infections Rickettsiennes. Mus rattus, Mus musculus (Rodentia) h Mecanismes des abnormalites diverses, specialement du systeme nerveux. Mus rattus, M. musculus (Rodentia) GITLIN, G. Ph.D., Prof. — Dept. of Anat., The Hebrew Univ. — Hadassah Med. School. P.O. Box 1172, JERUSALEM, Israel a Effect of ovariectomy in the newborn on vaginal opening. Mus norvegicus (Rodentia) b Relation of epiglottis to soft palate in the fetus and newborn. Homo sapiens (Primates) GIUDICE, G. M.D., Prof. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italia • a Protein synthesis during early development. Paracenfrotus lividus (Echinoidea) b Aggregation of cells isolated from embryos. Paracentrotus lividus (Echinoidea) c RNA synthesis during early development. Paracentrotus lividus (Echinoidea) GIUNTA, C. Dr. — Inst, of Biochem., Univ. of Turin, Via Giolitti 34, 10123 TORINO, Italy 65 a Induction by prolactin of thyroid activation in larvae at advanced metamorphic stages. Bufo bufo (Anura) (in collaboration with M. T. RINAUDO, R. BRUNO, Miss A. GUARDABASSI, M. OLIVERO and E. CAMPANTICO) GLADE. R. W. Ph.D., Prof. — Dept. of Zool., Marsh Life Sciences Building, Univ. of Vermont, BURLINGTON, Vt. 05401, U.S.A. a Establishment of bilateral symmetry in eggs as influenced by temperature gradients; histo- logical study of normal symmetrization. Rana pipiens. Xenopus laevis (Anura) b Influence of heterotopic tissues on limb regeneration investigated by the transplantation of tail skin, epidermis, and connective tissue to the limb stump. Siredon mexicanum (Ucodela) GLAS, P. M.Sc. — Dept. of Anat. and Embryol., State Univ. of Groningen, Oostersingel 69, GRONINGEN, Netherlands GLASS, Miss L. E. Ph.D. — Dept. of Anat., School of Med., Univ. of California, SAN FRANCISCO, Cahf. 94122, U.S.A. a Studies on maternal macromolecules transferred to developing ovarian oocytes and ovi- ductal or uterine embryos; interrelationships with macromolecules synthesized by the oocyte or embryo itself. Mus musculus (Rodentia) GLASSER, S. R. Ph.D., Prof. — Dept. of Obstet. and Gynecol., School of Med., Vanderbilt Univ., NASHVILLE. Tenn. 37203, U.S.A. GLENISTER, T. W. D.Sc, Ph.D., Prof. — Dept. of Anat., Charing Cross Hosp. Med. School, 62 Chandos Place, LONDON W.C.2, England • a Reaction of genital tract tissues to hormones in vitro. (Mammalia) b Study of blastocyst implantation in vitro. (Mammalia) c Behaviour of trophoblast in vitro. (Mammalia) d Development of embryos in vitro. (Mammalia) e Ultrastructure of embryo-maternal relationships during implantation. (Mammalia) GLOOR, H. J. Ph.D., Prof. — Genet. Lab., Univ. of Leiden, Kaiserstr. 63, LEIDEN, Netherlands a Differentiation in imaginal discs. Drosophila melanogastec (Diptera) GODET (NONNENMACHER), Mrs. J. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a La differenciation cellulaire dans le tissu sanguin et les diverses formes d'hemoglobine. Ga//iis domesficus (Aves) GODINA, G. Prof. — 1st. di Anat. degli Anim. Domestic!, Univ. di Torino, Via Nizza 52, 10126 TORINO, Italy a Origin of binucleate cells in cultures. (Aves) h Effect of subnormal temperatures on mitosis of cells cultured in vitro. (Aves) c Mitoses of binucleate cells. (Aves) GOEDBLOED, J. F. M.D. — Anat.-Embryol. Lab., Fac of Med., State Univ. of Leiden. Wassenaarseweg 62, LEIDEN, Netherlands a Differentiation and general growth. Raftus norvegicus. Mus musculus (Rodentia) b Development of branchial regions and otic organs. Rattus norvegicus. Mus musculus (Rodentia) GOERINGER, G. C. Ph.D. — Dept. of Anat., Georgetown Univ., 3900 Reservoir Rd., WASHINGTON. D.C. 20007, U.S.A. GOETINCK, P. F. Ph.D. — Dept. of Anim. Genet., Storrs Agric. Exper. Station. Univ. of Connecticut, STORRS, Conn. 06268, U.S.A. a Mesoderm-ectoderm interaction in differentiation (limb, scales and feathers). Gallus domesficus (Aves) GOFF, R. A. Ph.D., Prof. — Dept. of Zool., Univ. of Oklahoma, 730 South Oval, Rm 222, NORMAN, Okla. 73069, U.S.A. a Analysis of the development of the appendicular skeleton by means of X-rays. Gallus domesticus (Aves) h Histochemical analysis of morphogenesis. (Vertebrata) GOLDBERG, E. Ph.D. — Dept. of Biol. Sci., Northwestern Univ., EVANSTON, 111. 60201, U.S.A. GOLDHOR, Miss S. Ph.D. — Biol. Inst., Hacettepe Univ., ANKARA, Turkey a Biochemical investigation of membrane structural protein in different membranes at different stages of development in normal and cancerous tissues. Gallus domesticus (Aves), Mus musculus (Rodentia) b Developmental changes in membrane lipids. Gallus domesficus (Aves) GOLDIE, M. Ph.D. — Dept. of Biol., Loyola Univ., 6525 North Sheridan Rd., CHICAGO, 111. 60626, U.S.A. a Morphogenesis of the tail. Gallus domesficus (Aves) b Histological analysis of the development of the rumpless phenocopy. Gallus domesticus (Aves) c Site of action of factors inducing the rumpless phenocopy. Gallus domesticus (Aves) d Effects of excess nutrients on early development in o v o and in vitro. Gallus domesficus (Aves) 66 GOLDSMITH. Miss M. Ph.D. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a The role of cytolysosomcs in cell death and the hormonal control of cellular events during metamorphosis using electron microscopy, histo- and cytochemical techniques. Rhodnius proHxus (Hemiptera), Rana pipiens (Anura) b Epidermal-mesodermal relationships during cell death and cell differentiation in the in- tegument during larval stages and metamorphic climax is being studied at the level of cellular ultrastructural changes, both in vivo and in vitro. Rana pipiens (Anuca) GOLDSTEIN, L. Ph.D., Prof. — Inst, for Devclopm. Biol., Univ. of Colorado, BOULDER, Colo. 80302. U.SJ^. GOLDWASSER. E. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHI- CAGO, 111. 60637, U.S.A. a Biochemistry of induced differentiation of red blood cells GOLICHENKOV, V. A. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. GOMEZ DUMM, C. L. M.D. — Cat. "B" de Embriol., Biol, e Histol., Fac. de Cienc. Med., Univ. Nac. de La Plata, 60 y 120, LA PLATA. Argentina GOMOT, L. Dr.es Sci., Prof. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal Leclerc, 25 BESAN^ON, France a Developpement embryonnaire de la glande uropygienne. (Aves) (en collaboration avec Mile. J. BRIDE) b Differenciation sexuelle des hybrides. (Aves) c Organogenese de la glande mammaire. Oryctolagus cuniculus (Lagomorpha) (en colla- boration avec A. PROPPER) d Recherches sur la differenciation de la glande hermaphrodite. Helix aspersa (Pulmonata, Gastropoda) (en collaboration avec A. GUYARD) e Recherches sur le developpement in vivo et in vitro du coeur. Rana temporaria, Xenopus laevis (Anura) (en collaboration avec Mrs. M. BRIDE-VUILLET) f Evolution histophysiologique de I'appareil reproducteur au cours de I'ontogenese chez des hybrides steriles. Cairina moschata x Anas platyrhynchos (Aves) (en collaboration avec C. R. MARCH AND) g Determinisme de la sexualite. Paludina vivipara ( Prosobranchia, Gastropoda) (en colla- boration avec Mrs. B. GRIFFOND-ROGNON) GONENQ, Miss A. — Inst, of Histol. and Embryol., Med. Fac, Hacettepe Sci. Center, ANKARA, Turkey a Ultrastructural differentiation of somitic mesoderm. Gallus domesticus (Aves) GONTCHAROFF. Miss M. Prof. — Lab. de Biol. Cell., Fac. des Sci., B.P. 347, 51-REIMS, France a Regeneration. Lineus ruber (Anopla, Nemertea) h Analogues of DNA in embryonic development. Strong ylocentrotus pmpuratus (Echino- idea) GONZALEZ-SANTANDER, R. D.Med. — Inst. Cajal, Velazquez 144. MADRID 6. Spain a Citodiferenciacion de los gonocitos. b Ultraestructura de la cresta neural. Gallus domesticus (Aves) c Ultraestructura de los ovocitos. Homo sapiens (Primates) GOODWIN. B. C. Ph.D. — School of Biol. Sci., Univ. of Sussex, Falmer, BRIGHTON, Sussex, England a Control of regeneration by local electrical and biochemical stimulation. Hydra littoralis (Coelenterata) GORDON. H. P. Ph.D. — Dept. of Oral Biol., School of Dent., Univ. of Washington, SEATTLE. Wash. 98105. U.S.A. a Ontogeny of myocardium; developmental phenomena associated with myocardial cell interactions in vitro. Gallus domesticus (Aves) h Onset of protein synthesis and its control in parotid gland: epithelial-mesenchymal inter- action leading to biochemical differentiation and exogenous agents affecting control of secretory events in vitro including synthesis, storage and expulsion of proteins. Ratfus rattus (Rodentia) GORHAM. L. W. M.D. — Dept. of Pathol.. Cornell Univ., 1300 York Ave., NEW YORK. N.Y. 10021. U.S.A. GOSS, R. J. Ph.D., Prof. — Div. of Biol. & Med. Sci., Brown Univ.. PROVIDENCE, R.I. 02912. U.S.A. a Compensatory renal hypertrophy. Rattus rattus (Rodentia) b Growth regulation. (Teleostei) G5SSWALD. K. Dr.phil., Prof. — Inst, fiir Angew. Zool., Univ. Wiirzburg, Rontgenring 10. 87 WORZBURG. W.Germany a Development. (Formicinae, esp. Formica rufa group, Hymenoptera) GOSWAMI, M. N. D. Ph.D. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint-Bernard, 75 PARIS 5e, France 67 a Enzyme development in growth and metamorphosis; the enzymes in the degradation of tyrosine. (Pisces), Rana pipiens, Discoglossus pictus, Mantidactylus grandidieri, Rhaco- photus goudoti, Ptychadena mascarienensis, Nectophrynoides orientalis, Bufo marinus, Xenopus laevis (Anura), (Mammalia) h Developmental biology of enzymes; probable factors at the molecular level which determine the regulation and development of three tyrosine-oxidizing enzymes (tyrosine aketoglutarate aminotransferase, p-hydroxyphenylpyruvate hydroxylase and homogentisate oxygenase) in the liver. (Vertebrata) GOTTING, K. J. Dr.rer.nat. — I. Zool. Inst., Naturw. Fak., Justus Liebig-Univ., Stephanstr. 24, D-63 GIESSEN, W.Germany a Electron microscopical investigations on oogenesis of marine forms. (Teleostei) GOTTLIEB, F. J. Ph.D., Prof. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a The development and differentiation of the wing imaginal disc. Drosophila melanogaster (Diptera), Ephesfia kiihniella (Lepidopteca) h The genetic control and development of pigmentation in the eye and testis. Ephestia kiihniella (Lepidopteca) GOTTLIEB, G. Ph.D. — Psychol. Lab., Dorothea Dix Hospital, RALEIGH, N.C. 27602, U.S.A. a Behavioral development of foetuses and embryos. Anas platyrhynchos, Gallus gallus (Aves) GOTTSCHEWSKI, G. H. M.Dr.phil.habil., Prof. — Max-Planck-Inst. fur Immunbiol., Stefan-Meier-Str. 8, 78 FREIBURG i. Br., W.Germany a Teratogenic influence of maternal metabolic status on the embryo. Oryctolagus cuniculus (Lagomorpha), Mas musculus (Rodentia) b Determination and differentiation of the organ anlagen. Oryctolagus cuniculus (Lago- morpha), Mus musculus (Rodentia) GOUIN, F. J. Dr.es Sci. — Musee Zool. de I'Univ. et de la Ville, 29 Bd. de la Victoire, F-67 STRASBOURG, France a Descriptive and comparative embryology and postembryonic morphogenesis. (Myriapoda; Insect a) b Review of all work in descriptive, comparative and/or experimental embryology and post- embryonic morphogenesis. (Myriapoda; Onychophora; Insecta) GOULD (SOMERO), Mrs. M. Ph.D. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C. Canada a Patterns of protein synthesis during oogenesis. Urechis caupo (Echiuroidea) h Patterns of protein synthesis during early development. Urechis caupo (Echiuroidea). llyanassa obsoleta (Gastropoda) GOURDOUX (DESTRADE), Mrs. L. — Lab. de Physiol. Gener., Fac. des Sci. de Bordeaux, Avenue des Facultes, 33 TALENCE, France a Metabolisme du developpement. Tenebrio molitor (Coleoptera), Carausius morosus (Phas- midoptera) GRABOWSKI, C. T. Ph.D., Prof. — Dept. of Biol., Univ. of Miami, CORAL GABLES, Fla. 33124, U.S.A. a Teratological effects of hypoxia. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) b Morphogenetic and biochemical analysis of effects of hypoxia on the embryo. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) c Physiology of fluid and electrolyte balance in the early embryo and its relation to terato- genesis. Gallus domesticus (Aves), Rattus norvegicus, Oryctolagus cuniculus (Mammalia) d Blood chemistry of the young embryo. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) e Time-lapse studies of embryos exposed to teratogenic agents. Gallus domesticus (Aves) GRAHAM, D. E. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y. OAK RIDGE, Tenn. 37830, U.S.A. a Studies on functions of satelite DNA's and macromolecular metabolism in regenerating tissues. Gecarcinus lateralis (Decapoda, Crustacea) (in collaboration with Miss M. S. KERR and D. M. SKINNER) GRAHN, I. — Zoophysiol. Inst., Univ. of Lund, Helgonavagen 3, 223 62 LUND, Sweden a Biochemically induced irregularities in karyokinesis and cytokinesis during early cleavage. Planorbis spec. (Gastropoda) GRANT, Ph. Ph.D. — Dept. of Biol., Univ. of Oregon, EUGENE, Ore. 97403, U.S.A. • GRASSO, J. A. Ph.D. — Dept. of Anat., School of Med.. Case Western Reserve Univ., 2109 Adelbert Rd., CLEVELAND, Ohio 44106, U.S.A. a Morphological and chemical studies of red blood cell development. Triturus viridescens, T. cristatus carnifex, Tacicha tocosa (Urodela) GRASSO, M. Dr., Prof. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Giacomo 9, 40126 BOLOGNA, Italy 68 a Role of neurosecretion in the regeneration and in the differentiation and ripening of the genital apparatus. Dugesia lugubris, Polycelis nigra (Turbellaria), Pasciola hepatica (Trematoda) b Descriptive and experimental study of development and sex differentiation of genital apparatus. Sepia officinalis (Cephalopoda) GRAU. C. R. Ph.D., Prof. — Dept. of Poultry Husbandry, Univ. of Cahfornia, DAVIS, Calif. 95616, U.S.A. GRAY, D. J. Ph.D. — Dept. of Anat., School of Med., Stanford Univ., STANFORD, Calif. 94305. U.S.A. a Prenatal development of bone. Homo sapiens (Primates) GRAY. Miss F. H. Ph.D. — Dept. of Physiol.. Univ. of Miami. P.O. Box 875, Biscayne Annex, MIAMI. Fla. 33152. U.S.A. a Hormonal control of metachemogenesis; post-emergence maturation of insects. Apis melli- /era (Hymenoptera), Musca domestica (Diptera) GREEN. Ch. R. Ph.D. — Dept. of Pathol., Univ. of Melbourne. PARKVILLE, Vict. 3052, Australia (no embryological work in progress) GREEN. Mrs. M. C. Ph.D. — The Jackson Lab., BAR HARBOR. Me. 04609. U.S.A. a Developmental genetics. Mas musculus (Rodentia) GREENFIELD, Miss M. L. B.Sc. — Dept. of Zool., Univ. of Dar-Es-Salaam, DAR-ES- SALAAM, Tanzania GREENGARD, O. Ph.D. — Dept. of Biol. Chem., Cane. Research Inst.. New England Deaconess Hosp., 185 Pilgrim Rd.. BOSTON, Mass. 02215, U.S.A. a Prenatal and early postnatal development of specific enzymes. Rattus nocvegicus (Rodentia) GREENWOOD, M. S. M.Sc. M.F.S. — Dept. of Biol., Middlebury Coll., MIDDLEBURY, Vermont, U.S.A. a Studies on the origin and physiology of roots regenerated by hypocotyl slices from dor- mant, mature embryos. Pinus lambertiana (Gymnospermae) GREGG. J. H. Ph.D., Prof. — Dept. of Zool., Univ. of Florida, GAINESVILLE, Fla. 32601, U.S.A. a Developmental physiology. (Acrasiales) GREGG. J. R. Ph.D., Prof. — Dept. of Zool.. Duke Univ., DURHAM, N.C. 27706. U.S.A. • a Metabolism of normal animals and hybrids. Rana pipiens, R. pipiens 9 x R. sylvatica 6 (Anura) h Metabolism of normal and hybrid tissue-breis. Rana pipiens. R. pipiens 9 x R. sylvatica 6 (Anura) GRELL, K. G. Dr.rer.nat., Prof. — Zool. Inst, der Univ., Holderlinstr. 12. 74 TUBINGEN. W.Germany GREMIGNI, V. Dr.Biol.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta 4, PISA, Italy a Cytochemistry and electron microscopy of oogenesis. (Tricladidea, Turbellaria) GRIFFOND (ROGNON), Mrs. B. Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal Leclerc, 25 BESANQON, France a Determinisme de la sexualite. Paludina vivipaca (Pcosobranchia. Gastropoda) (en col- laboration avec L. GOMOT) GRILLO. H. C. M.D., Prof. — Dept. of Surgery. Massachusetts Gen. Hosp., BOSTON, Mass. 02114, U.S.A. a Biological characteristics and function of native tissue collagenases in wounds; partial purification and characterization. (Mammalia) GRILLO, T. A. I. Prof. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria • GROBSTEIN, C. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037, U.S.A. • a Epithelio-mesenchymal relationships in pancreatic differentiation b The nature and behavior of interface materials in inductive systems GRODZWSKI, Z. D.Sc, Prof. (Emer.) — Dept. of Comp. Anat., Jagellonian Univ., ul. Krupnicza 50, KRAK6W, Poland • a Studies on yolk from the ripe egg; influence of hypo- and hypertonic NaCl solutions; supravital basic and acidic dyes; electron microscopy; structure of yolk platelets. Myxine spec. ( Agnatha) , Amia spec, Lepisosteus spec. (Holostei) GROENENDIJK (HUYBERS), Mrs. M. M. M.D., D.Sc. — Anat.-Embryol. Lab., State Univ. of Utrecht, Janskerkhof 3A, UTRECHT, Netherlands GROS, D. M.es Physiol. — Lab. de Physiol. Anim., Fac. des Sci., Univ. de Poitiers, 40 Av. de Recteur Pineau, 86 POITIERS, France a Electrophysiological study of embryonic heart in relation with electron microscopy. Rattus noTvegicus (Rodentia) GROSCH, D. S. Ph.D. — Dept. of Genet., North Carolina State Univ., 353 Gardner Hall, RALEIGH, N.C. 27607, U.S.A. 69 a Egg production and survival of embryos after mother has been fed enzyme inhibitors, antimetaboHtes and related compounds; without and with irradiation. Habrobracon spec. (Hymenoptera) b The effects of space flight on reproductive performance (weightlessness, dynamic factors of launching and recovery, and radiation effects). (Insecta) GROSS, P. R. — Dept. of Biol., Massachusetts Inst, of Technol., CAMBRIDGE, Mass. 02139, U.S.A. GROTE, W. Dr.med. — Inst, for Human Genet, and Anthropol., Univ. of Diisseldorf, Ulen- bergstr. 127, 4000 DUSSELDORF, W.Gerraany a Teratogenesis by increase of partial CO2 and O2 pressure or by reduction of the atmos- pheric pressure. Oryctolagus cuniculus (Lagomorpha) h Teratogenic effect of hypothermia: electrolytes in serum, and lactic and pyruvic acid in blood under normothermic and hypothermic conditions. Oryctolagus cuniculus (Lago- morpha) c Teratogenic effect of maternal hemorrhages. Oryctolagus cuniculus (Lagomorpha) GRUMMT, F. Dipl.biol. — Inst, fiir Zellphysiol., Deutsche Akad. der Wissensch. zu Berlin, Lindenberger Weg 70, 1115 BERLIN-Buch, East.Germany GRUNEBERG, H. Ph.D.. M.D., D.Sc, F.R.S., Prof. — Dept. of Anim. Genet., Univ. Coll. London, Wolf son House, 4 Stephenson Way, LONDON N.W.I, England • a Developmental genetics. Mus musculus (Rodentia) GRUNZ, H. Dr.rer.nat. — Inst, fiir Physiol. Chemie, Freie Univ. Berlin, Arnimallee 22, 1 BERLIN 33, W.Germany a RNA- and protein synthesis with regard to aggregation of dissociated embryonic cells. (Amphibia), Callus domesticus (Aves) h Changes of cell affinity during morphogenesis. (Vectebrata) c Competence in early development. Ttiturus alpestds, Ambystoma mexicana (Urodela) GSELL, R. — Zool.-vergl. Anat. Inst., Naturwiss. Fak., Univ. Ziirich, Kiinstlergasse 16, 8006-ZtlRICH, Switzerland a Clonal analysis in cultures of imaginal discs from instable mottling systems (strain Ysc8). Drosophila melanogaster (Diptera) GUARDABASSI, Miss A. Dr.nat.sci., Prof. — Inst, of Exper. Embryol., Univ. of Turin, Via Giolitti 34, 10123 TORINO. Italy a Induction by prolactin of thyroid activation in larvae at advanced metamorphic stages. Bu[o bufo (Anuva) (in collaboration with M. OLIVERO, E. CAMPANTICO, M. T. RINAUDO, C. GIUNTA and R. BRUNO) GUERRIER. P. — Sect, de Biol. Gener. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Etude microcinematographique du developpement. (Nematoda; Spiralia) GUICHARD (CHAVENAT) Mrs. A. Maitre es sci.biol.anim. — Lab. de Chimie Hormonale, Maternite de Port-Royal, 121 Bd. de Port-Royal, PARIS XI Ve, France a Biosynthesis of steriods and sterols in organotypic culture of immature gonads; influence of HCG on steroidogenesis. Callus domesticus (Aves) h Cholesterol synthesis from acetate- 14C and utilization of endogenous cholesterol for progesteron synthesis in placenta perfused in vitro; influence of chorionic gonadotropin and LH. Homo sapiens (Primates) GUIRAO-PEREZ, M. Med.Dr., Prof. — Inst. F. Oloriz, Fac. of Med., LIniv. of Granada, GRANADA, Spain GUMBRECK, L. Ph.D.. Prof. — Dept. of Anat., Med. School, Univ. of Oldahoma. 801 NE 13th St., OKLAHOMA-City, Okla. 73104, U.S.A. a Studies on the development of genital, ophthalmic and urinary anomalies as related to genes, with emphasis on hermaphroditic alterations. Rattus raftus (Rodentia) GUNBERG, D. L. Ph.D.. Prof. — Anat. Dept.. Univ. of Oregon Med. School, 3181 S.W. Sam Jackson Park Rd., PORTLAND, Ore. 97201, U.S.A. a In vitro investigations of the metabolic requirements of early post-implantation em- bryos. Rattus noruegicus (Rodentia) b An investigation of the effects of teratogens on 6-30 somite embryos cultured in serum. Rattus noruegicus (Rodentia) GUNDISCH, M. M.D., D.Sc. Prof. — Dept. of Neuropathol., Research Station of Tirgu- Mure§ of the Acad, of the S.S.R., Str. Gh. Marinescu 38, TIRGU-MURE§, Rumania GUPTA, P. C. Ph.D. — Dept. of Zool., Univ. of Gorakhpur, GORAKHPUR (U.P.), India a Developmental morphology. Bemisia gossypiperda (Aleurodidae, Homoptera) b Studies on structural differences in development in relation to the host plant. Bemisia gossypiperda (Aleurodidae, Homoptera) GURAYA. S. S. Ph.D. — Dept. of Zool., Univ. of Udaipur, UDAIPUR, Rajasthan, India GURDON, J. B. M.A., D.Phil. — Dept. of Zool., Parks Rd., OXFORD, England • GUSTAFSON, T. Fil.Dr., Prof. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden • a Morphogenetic movements and cell contacts. (Echinoidea) b Enzyme induction and repression in cell cultures 70 GUTIERREZ, M. Dr. — Dept. de Anat.. Cat. de Anat. II, Fac. de Med., CADIZ, Spain GUYARD, A.' Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal Leclerc, 25 BESANCON, France a Recherches sur la differenciation de la glande hermaphrodite. Helix aspecsa (Pulmonafa, Gastropoda) (en collaboration avec L. GOMOT) GWATKIN, R. B. L. Ph.D. — Physiol. Dept., Merck Inst, for Thcrap. Research, RAHWAY, N.J. 07065, U.S.A. a Studies on fertilization, implantation and early development. (Mammalia) GYERGYAY, F. M.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure5 of the Acad of the S.S.R.. Str. Gh. Marinescu 38, TIRGU-MURE§, Rumania GYERGYAY (MALATINSZKY), Mrs. E. M.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure§ of the Acad, of the S.S.R., Str. Gh. Marinescu 38, TIRGU- MURE§, Rumania GYfiVAI (TOTH), Mrs. A. T. — Inst, of Exper. Med. of the Hung. Acad, of Sci., Morphol. Dept., Szigony-u. 43. BUDAPEST VIII, Hungary GYLLENSTEN. L. J. W. Med.Dr. — Dept. of Histol., Karolinska Inst., Solnavagen 1, STOCKHOLM 60, Sweden HACCIUS, Miss B. Dr., Prof. — Inst, fur spez. Botanik, Johannes-Gutenberg Univ., 65 MAINZ, W.Germany a Beeinflussung der Entwicklung von Embryonen durch Chemikalien (Wachstumsregulatoren; Antimitotica; Radiomimetica und Rontgenstrahlen). Eranthis hiemalis (Ranunculaceae) b In vitro Kultur von Embryonen un Geweben. (Plantae) c In vitro culture of callus cells with free tubular connections between the single cells. Cannabis sativa (Cannabaceae) HACH, P. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Histogenesis of the hypophysis (comparative studies on the submicroscopic structure and enzyme histochemistry). Mas rattus (Rodentia), Homo sapiens (Primates) HADDAD, V. M.D. — Dept. of Physiol., School of Med., Tufts Univ., 136 Harrison Ave., BOSTON. Mass. 02111, U.S.A. HADFIELD, M. G. Ph.D. — Pacific Biomed. Research Center, Univ. of Hawaii, 2538 The Mall, HONOLULU, Hawaii 96822, U.S.A. a Sources of yolk and causative factors in the non-development of nurse eggs, (cyto- chemistry, electron, phase-contrast and interference-contrast microscopy). (Vermetidae. Gastropoda) b Spermatogenesis with particular attention to formation of "giant", apyrene spermatozoa (phase-contrast and electron microscopy); centrifugal separation and chemical analysis of the apyrene sperm. (Vermetidae, Gastropoda) HADJUSKI, P. Dr. — Inst. d'Histochim. Med., Fac. de Med. de Paris, 45 rue des Sts. Peres, 75 PARIS Vie, France a Development of the ovary. (Mammalia) HADORN, E. Dr.Phil., Prof. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16, CH-8006 ZURICH, Switzerland • a Determination, transdetermination and differentiation in cells of imaginal discs. Drosophila melanogaster (Diptera) HAGELIN, L. O. Fil.lic. — Zool. Inst., Univ. of Stockholm, 70A RSdmansgatan, Box 6801, S-113 86 STOCKHOLM. Sweden HAGET, A. Dr.es Sci., Prof. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France . • a Analyse experimental de la morphogenese embryonnaire de la tete. Leptinofacsa spec. (Coleoptera), Locusta spec. (Orthoptera) b Recherches sur I'edification de la blastule et de la gastrule. Leptinotarsa spec. (Coleoptera) c Activation du systeme ovulaire. Leptinotarsa spec. (Coleoptera) HAGGIS, A. J. Ph.D., Prof. — Dept. of Biol., Univ. of Detroit, DETROIT, Mich., U.S.A. HAGIWARA, A. D.Sc. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of Kyoto, KYOTO, Japan ^ ,^ , HAGLUND, Miss B. M. Fil.lic. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA. Sweden a Permeability and osmoregulation. Xenopus laevis. Rana spp. (Anura), Siredon mexicanum (Urodela) ,, , , HAGSTROM, J. W. C. M.D., Prof. — Dept. of Pathol., Cornell Univ., 1300 York Ave., NEW YORK, N.Y. 10021, U.S.A. ^ ^ , HAIDER, M. H. M.Sc. — Dept of Zool., Univ. of Gorakhpur, GORAKHPUR (U.P.). India a Cyclic changes in gonad development. Nandus nandus (Teleostei) h Histomorphological studies on thyroid and pituitary glands in relation to seasonal changes in gonad development. Nandus nandus (Teleostei) HAKANSSON, L. M.D. — Tornblad-Inst. for Comp. Embryol.. Biskopsgatan 7, LUND, Sweden a Chromosome biochemistry during development. Gallus domesticus (Aves), Homo sapiens (Primates) 71 b Monamine development in the nervous system. Gallus domesficus (Aves) (in collaboration with L. NORD) HALBA, R. M.Sc. — Inst, of Zool., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Ossification of the skull. (Charaddidae, Aves) HALEY, S. R. Ph.D. — Dept. of Zool.. Univ. of Hawaii, 2538 The Mall. HONOLULU. Hawaii 96822, U.S.A. HALFER. Miss C. — 1st. di Genet., Univ. di Milano, Via Celoria 10, 20133 MILANO, Italy a Ovary transplantation. Drosophila spec. (Diptera) h DNA replication in cells cultured in vitro. Drosophila melanogaster (Diptera) HALL, B. K. Ph.D. — Dept. of Biol., Dalhousie Univ., HALIFAX, Nova Scotia, Canada a Studies on the origin of cartilage and bone from common germinal cells. Gallus domesticus (Aves) h Studies on the control of organ size, especially the adrenal gland. (Gallus domesticus (Aves) HALL, Mrs. E. J. B.A. — Dept. of Zool.. Univ. of British Columbia, VANCOUVER 8. B.C., Canada a Ultrastructure of the development of the yolk sec. Raja binoculata (Selachii) (in col- laboration with P. FORD) HAM, R. G. Ph.D. — Inst, for Developm. Biol., Univ. of Colorado, BOULDER, Colo. 80302, U.S.A. HAMA, T. D.Sc, Prof. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA. Japan • HAMADA, K. M.D. — Dept. of Biochem., Nippon Med. School, 1-1-5, Sendagi, Bunkyo-ku, TOKYO, Japan a Genetic control of hemoglobin switch during metamorphosis. Rana catesbeiana (Anura) (in collaboration with A. KAJITA and R. SHUKUYA) HAMBURGER. K. Cand.mag. — Biol. Inst, of the Carlsberg Found.. Tagensvej 16. 2200 COPENHAGEN, N., Denmark a Studies on respiratory metabolism during early development by means of the gradient diver technique. Rana oxyrrhinus, R. platyrrhinus (Anura) HAMBURGER, V. Ph.D., Prof. — Dept. of Biol.. Washington Univ., ST. LOUIS, Mo. 63130, U.S.A. • a Neuro-embryologie. Gallus domesticus (Aves) b Embryology of behavior. Chelydra serpentina (Chelonia), Gallus domesticus (Aves), Rattus domesticus (Rodentia) HAMBURGH, M. Prof. — Dept. of Biol., City Coll. of the Univ. of New York. Convent Ave. and 139th St.. NEW YORK. N.Y. 10031. U.S.A. — Dept. of Anat., Albert Einstein Coll. of Med.. Eastchester Rd. and Morris Park Ave.. NEW YORK. Bronx, N.Y. 10461, U.S.A. a Tissue culture of demyelinating mutants. Mus musculus (Rodentia) h Culture of muscle of dystrophic mutants. Mus musculus (Rodentia) c Effect of trypan blue on lysosomal enzymes of the yolk sac placenta of trypan blue treated embryos (histochemistry). (Mammalia) d Effect of trypan blue on ion permeability in the embryo. (Amphibia) e Effect of trypan blue on the expressivity of the brachyury gene, which affects skeletal morphogenesis in a somewhat similar manner as does trypan blue. Mus musculus (Rodentia) f Effect of thyroxin on hormones affecting myelin formation and cell proliferation in nerve tissue culture. (Rodentia) g Correlation of behavioral enzymatic and morphological changes in the developing nervous system as a result of hormone manipulation. Mus musculus, Rattus norvegicus (Rodentia) HAMILTON, H. L. Ph.D.. Prof. — Dept. of Biol.. Univ. of Virginia. Gilmer Hall. CHARLOTTESVILLE. Va. 22903. U.S.A. • HAMILTON, Miss L. Ph.D. — Dept. of Biol, as applied to Med.. The Middlesex Hosp. Med. School. LONDON W.l. England a Analysis of haploid syndrome. Xenopus spp. (Anura) b Radiation sensitivity of haploid and diploid embryos. Xenopus laevis (Anura) c Investigation of haploid and diploid tissues by electron microscopy. Xenopus laevis (Anura) (in collaboration with H. FOX) HAMILTON. T. H. Ph.D., Prof. — Dept. of Zool, The Univ. of Texas. AUSTIN. Tex. 78712. U.S.A. a Effects of steroid hormones on genital duct differentiation in embryos studied in vivo and in vitro. Gallus domesticus (Aves) HAMILTON. W. J. Prof. — Dept. of Anat., Charing Cross Hosp. Med. School. 62 Chandos Place, LONDON W.C.2. England • a Development and structure of the placenta. Homo sapiens (Primates) HAMMERLING, J. Dr.phil., Prof. — Max-Planck-Inst. fiir Zellbiol., Anton-Dohrn-Weg, Postfach 1009, D 294 WILHELMSHAVEN. W. Germany • a Nucleo-cytoplasmic relationships. Acetabularia spec, and other spp. (Algae) 72 HAMMOND W S Ph.D., Prof. — Dept. of Anat.. School of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE, N.Y. 13210. U.S.A. • a Hypophyseal development in the embryo. Gallus domesticus (Aves) HAMMOUDA, E. I. B.Sc. — Dept. of Zool.. Ain Shams Univ., Fac. of Sci., Abassia. CAIRO, Egypt, U.A.R. HAMNER Ch D.V.M., Ph.D. — Dept. of Obstet. and Gynecol., Div. of Reprod. Biol.. Univ. of Virginia Med. School. Box 179, CHARLOTTESVILLE, Va. 22903, U.S.A. a The composition of oviduct secretions of ovariectomized females with and without estrogen and progesterone injections and the effects of these secretions on sperm metabolism, fer- tilizing ability and blastocyst development. Oryctolagus cunicuhis (Lagomorpha) b The role of steroids in capacitation of sperm in the female reproductive tract. (Mammalia) c Reproductive physiology; artificial insemination technique, sperm characterization, seminal plasma constituents, ovulation of the queen with luteinizing hormone and limits of breeding time. Felis catus (Carnivora) HANAOKA, K. I. D.Sc, Prof. — Dept. of Comp. Endocrinol., Inst, of Endocrinol.. Ounma Univ.. Showa-machi, MAEBASHI, Japan HANAOKA, Y. M.Sc. — Zool. Inst.. Fac. of Sci., Hokkaido Univ., SAPPORO, Japan HANAWAY, J. K. M.D. — Dept. of Anat., Med. School, Univ. of Virginia, CHAR- LOTTESVILLE, Va. 22901, U.S.A. a Development of midbrain, in particular red nucleus and substantia nigra, using radioauto- graphy and tissue localization in biogenic amines. Mus musculus (Rodentia) h Histogenesis of cerebellum, with concentration on deep cerebellar nuclei, basket cells, glia and external granular layer (techniques: radioautography, histochemistry and plastic sectioning). Mus musculus (Rodentia) HANCOCK. J. L. Ph.D.. Prof. — Dept. of Anat., Royal Vet. Coll.. LONDON N.W.I. England a Intergeneric hybrids. Capra hiccus x Ovis aries (Actiodactyla) b Fertilization (experimental studies). Sus scrofa, Ovis aries (Actiodactyla) c Developmental pathology of hybrid placenta. Capra hircus x Ovis aries (Artiodactyla) d Immunological aspects of foetal-maternal relationships exemplified by hybrid gestation. Capra hircus x Ovis aries (Artiodactyla) (in collaboration with P. T. McGOVERN) HANCOX, N. M. M.D., Prof. — Histol. Dept., Fac. of Med., Univ. of Liverpool, LIVER- POOL, Lancashire, England rx^ , , HANKE, W. Dr., Prof. — Zool. Inst, der Univ., Siesmayerstr. 70, 6000 FRANKFURTa.M.. W.Germany a Influence of hormones on skin. Rana temporaria (Anura), Mus musculus (Rodentia) h Effects of adrenocortical hormones. Anguilla anguilla (Teleostei). Amby stoma spec. (Urodela), Rana temporaria, Xenopus laevis (Anura) c Development of endocrine tissue. Ambystoma spec. (Urodela), Xenopus laevis (Anura) HANOCQ, Miss F. A. Lic.Sci.ZooI. — Lab. de Morphol. Anim.. Univ. libre de Bruxelles, 67. rue des Chevaux. RHODE-ST-GENESE, Brabant, Belgium a Studies on nucleic acid metabolism (chiefly, DNA) during maturation of oocytes, by autoradiography and biochemical methods. (Amphibia) HANOCQ (QUERTIER), Mrs. J. A. Dr.en Sci.Biol. — Lab. de Morphol. Anim.. Univ. libre de Bruxelles, 67. rue des Chevaux. RHODE-ST-GENfiSE, Brabant, Belgium • a Metabolism des acides nucleiques dans les hybrides. Paracentrotus spec, Arbacia spec. (Echinoidea), Bufo spec, Rana spec. (Anura) b Studies on protein synthesis in anucleate eggs. Arbacia spec. (Echinoidea) c Studies on DNA synthesis during oogenesis. (Amphibia) d Localization of cytoplasmic DNA during embryonic development. (Amphibia) HANSEN-DELKESKAMP, Mrs. E. Dr. — Zool. Inst, der Univ.. Physiol. Lehrstuhl, Berlinerstr. 15, 6900 HEIDELBERG. W. Germany a Metabolism of eggs and embryos. Gryllus domesticus (Orthoptera) HANSON. E. D. Ph.D.. Prof. — Dept. of Biol., Wesleyan Univ., MIDDLETOWN. Conn. 06457. U.S.A. a Developmental genetics of oral structures (techniques; UV microbeam, nucleic acid anti- metabolites). Paramecium aurelia, P. trichium (Ciliata) HARA, K. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1. Universiteits- centrum "De Uithof". UTRECHT, Netherlands a Temporal aspects in the process of neural induction by the young head process. Gallus domesticus (Aves) h Cinematographical study of normal cleavage pattern and gastrulation movement. Am- bystoma mexicanum (Urodela), Xenopus, laevis (Anura) (in collaboration with Miss E. C. BOTERENBROOD) HARDMAN, G. — Histol. Dept.. Fac of Med., Univ. of Liverpool, LIVERPOOL. Lanca- shire, England HARKMARK, W. Dr.med.. Prof. — Anat. In.st.. Univ. of Bergen, Arstadvollen. BERGEN. Norway HARPER. M. J. K. Ph.D. — Worcester Found, for Exper. Biol.. 222 Maple Ave., SHREWS- BURY, Mass. 01545, U.S.A. 73 a Ovum transport through the reproductive tract. Oryctolagus cuniculus (Lagomocpha), Rattus rattus (Rodentia) b Ovum development and implantation. Mesocricetus aurafus, Rattus rattus (Rodentia), Oryctolagus cuniculus (Lagomorpha) c Effects of chemical compounds on pregnancy. Oryctolagus cuniculus (Lagomorpha), Rattus rattus, Mus musculus, Mesocricetus auratus (Rodentia) d Fertilization. Oryctolagus cuniculus (Lagomorpha) HARREBOMEE. Mrs. A. E. Med.drs. — Div. of Exper. Morphol., Dept. of Anat. and Embryol., Univ. of Amsterdam, Mauritskade 61. AMSTERDAM-O.. Netherlands a Regeneration blastemata induced in heterotopic positions and their development. Am- bystoma mexicanum (Urodela) h Differentiation and de-differentiation during regeneration. Ambystoma mexicanum (Uro- dela) HARRIS J. W. S. Ph.D. — Dept. of Anat.. Royal Free Hosp. Med. School. 8 Hunter St.. LONDON, W.C.I, England • HARRIS. M. Ph.D., Prof. — Dept. of Zool.. Univ. of California. BERKELEY, Calif. 94720. U.S.A. a Tissue culture: protein growth factors; evolution of chromosome patterns; drug resistance. Sus domesticus (Artiodactyla) h Thermotolerance of kidney cells in vitro. Sus domesticus (Artiodactyla) HARRISON. J. R. Ph.D., Prof. — Dept. of Biol.. State Univ. Coll.. OSWEGO, N.Y. 13126 U.S.A. a In vitro studies on the growth and differentiation of the retinal pigment in the em- bryonic eye: analysis of developmental factors contained in the yolk-albumen of the egg. Gallus domesticus (Aves) h 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) HARRISON. R. J. M.D., D.Sc. Prof. — Anat. School. Univ. of Cambridge. Downing St.. CAMBRIDGE CB2 3DY, England a Reproduction, gonads, placenta, endocrine organs. Phoca spec, Lobodon spec. (Pinnipedia), Tursiops spec. Delphinus spec. (Cetacea) HARTE, Miss C. Dr.. Prof. — Inst, fur Entw.physiol, Univ. zu Koln, Gyrhostr. 17. 5 KOLN-Lindenthal. W.Germany a Interactions between genes and environment in controlling morphogenesis of leaves. Antir- rhinum majus (Scrophulaciaceae) h Growth of callus, and differentiation in tissue cultures of different mutants. Oenothera hookeri (Onagraceae), Antirrhinum majus (Scrophulariaceae) HARTWIG. H. Dr.Phil.. Doz. — Zool. Inst, der Univ.. Weyertal 119. 5 KOLN-Lindenthal. W.Germany a Wirkungsmechanismus von Schilddriisenhormonen b Epithelcysten c Geweihbildung. Capreolus capreolus (Artiodactyla) HASEGAWA. M. D.Sc. Prof. — Lab. of Biol.. Women's Coll. of Tokai-Cakuen, Tenpaku- cho. Shyowa-ku. NAGOYA, Japan HASEK, M. M.D. — Dept. of Exper. Biol, and Genet.. Inst, of Biol., Czechoslov. Acad, of Sci.. Flemmingovo nam. 2. PRAHA 6, Czechoslovakia • HASELKORN. R. Prof. — Dept. of Biol.. Div. of Biol. Sci.. Univ. of Chicago. CHICAGO. 111. 60637. U.S.A. a Development of chloroplasts in simple plants HASHIMOTO. K. M.D. — Dept. of Dermatol., School of Med., Tufts Univ., 171 Harrison Ave.. BOSTON. Mass. 02111. U.S.A. HASHIMOTO. K. D.Sc. — Biol. Lab.. Kozu High School, Tennoji-ku, OSAKA, Japan a Relationships between encystment and morphogenesis. (Colpodidae, Ciliata) HASLAUER, J. Ph.D. — Paracelsus-Forschungsinst. fiir Physiol, und Biophysik, Franz- Josefs-Kai 41, 5020 SALZBURG, Austria HASSMANNOVA, Miss J. M.D., CSc. — Inst, of Pathophysiol., Med. Fac, Charles Univ., Lidicka 1, PLZEn, Czechoslovakia HATAE, T. Dr.Med. — Dept. of Anat., Fac. of Med., Kyushu Univ., FUKUOKA. 812 Japan a An electron microscope study of the developing liver. (Mammalia) HATIER (AUTELIN). Mrs. R. Lic.es Sci. — Lab. d'Embryol.. Fac. de Med.. Univ. de Nancy. 31 rue Lionnois, 54 NANCY, France HAUENSCHILD, C. Dr.rer.nat.. Prof. — Zool. Inst, dcr Techn. Univ.. Pockelsstr. 10a. 3300 BRAUNSCHWEIG. W.Germany a Reproduction, sex differentiation, endocrinology and periodicity. Platynereis, Ophryotrocha and other spp. (Polychaefa) 74 HAUSEN, P. Dr. — Max Planck Inst, fiir Biol., Abt. Beermann, Spemannstr. 34, 74 TU- BINGEN. W.Germany HAY, Miss E. D. M.D., Prof. — Dept of Anat., Harvard Med. School, 25 Shattuck St.. BOSTON. Mass. 02115, U.S.A. • HAY. Miss M. F. Ph.D. — A.R.G. Unit of Reprod. Physiol. 6 Biochem., Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIDGE. England a Effect of embryotoxic agents on pre-implantation embryos in vivo and in vitro. Oryctolagiis cuniculus (Lagomorpha) b Relationship between embryo and corpus luteum. Ovis aries (Artiodactyla) HAY, R. J. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE. Md. 21210, U.S.A. a Animal viruses (esp. tumor viruses) as tools in studying embryonic development. Gallus galltis (Aves) (in collaboration with J. D. EBERT and Mrs. M. YOSHIKAWA- FUKADA) HAYAKAWA, Miss H. — Dept. of Biol., Osaka Kyoiku Univ., Tennoji-ku. OSAKA, 543 Japan a Cytodifferentiation during cleavage. (Amphibia) h Nucleo-cytoplasmic interaction during early development. (Amphibia) c Cell interactions in relation to cytodifferentiation. (Amphibia) HAYASHI, I. M.D., Prof. — Pathol. Dept., School of Med., Nagasaki Univ., 93 Sakamoto- machi. NAGASAKI, Japan HAYASHI, Y. Ph.D., Prof. — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ.. Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan • a Analysis of epithelio-mesenchymal interaction in the formation of the beak. Gallus spec. (Aves) h Biochemical analysis of muscle differentiation. Rana nigromaculafa (Anura), Gallus spec. (Aves) (in collaboration with T. HIRABAYASHI) c Cytochemical studies on primary induction. Trifurus pyrrhogasfer (Urodela) HAYEK. H. Dr.med., Dr.phil., Prof. — Anat. Inst.. Wahringerstr. 13, WIEN 9, Austria • HAYNES, J. F. Ph.D. — Dept. of Zool., Univ. of Maine, ORONO, Me. 04473 U.S.A. a Growth and form regulation in polyps. (Hydrozoa) b Ultrastructural studies of differentiation. (Coelenterata) HEARSON, L. L. Ph.D — Dept. of Biol.. Wabash Coll. CRAWFORDSVILLE. Ind. 47933. U.S.A. a Investigations of proliferation. DNA synthesis and nerve fiber pattern-; in forelimb blas- temata. Ambystoma mexicanum (Urodela) h Cytochemistry of dedifferentiation and redifferentiation in denervated limbs. Ambystoma maculatum, A. opacum (Urodela) c Investigation of proliferation patterns in aneurogenic forelimb blastemata. Ambystoma maculatum, A. opacum (Urodela) HEATH. H. D. Ph.D.. Prof. — Dept of Biol. Sci.. Calif. State Coll. HAYWARD. Calif. 94542, U.S.A. a Starvation and temperature effects on larval growth rates. Taricha torosa. Ambystow.a tigrinum (Urodela) h Control of nematocyst distribution and tentacle number. Hydra littoralis. Chlocohydra viridissima (Hydroidea) HEAYSMAN (WAKELING). Mrs. J. E. M. Ph.D. — Dept. of Zool. and Comp. Anat., Univ. Coll. London. Cower St., LONDON W.C.I, England a Study of cell relations in tissue culture. Gallus gallus (Aves), Mus musculus (Rodentia) (in collaboration with M. ABERCROMBIE and Mrs. S. M. PEGRUM (HALL)) b Cell migration within the embryo. Gallus domesticus (Aves) (in collaboration with Mrs. M. R. BELLAIRS, Dept. of Anat.) HEBARD, Miss C. N. A.B. — Dept. of Biochem., School of Med., Univ. of Pennsylvania, PHILADELPHIA. Pa.. U.S.A. HEBY, O. — Zoophysiol. Inst.. Univ. of Lund. Helgonavagen 3. 223 62 LUND. Sweden a Polyamines in developing larvae. Calliphora spec. (Diptera) HEGGESTAD, C. B. M.D., Ph.D.. Prof. — Dept. of Anat., School of Med., Univ. of Minnesota. MINNEAPOLIS, Minn. 55455, U.S.A. HEIM, W. G. Ph.D.. Prof. — Dept. of Biol., The Colorado Coll., COLORADO SPRINGS, Colo. 80903, U.S.A. • a Serum proteins during ontogeny. Gallus domesticus (Aves), Mus rattus (Rodentia) h Alpha-2 macroglobulin during development, regeneration and various physiological states. Mus rattus (Rodentia) c Localization of developmental control factors in the embryonic cortex. Rana pipiens (Anura) HEIN, Miss R. R. Ph.D.. Prof. — Biol. Dept., Uppsala College, Prospect St., EAST ORANGE,, New Jersey 07019. U.S.A. a Effect of chemical agents (usually metals) on development and possible correlation with the effect of selected enzyme systems present in developing and regenerating tissues. Dugesia dorotocephala (Turbellaria), (Echinodermata) 75 HEIZMANN, P. Dr.Ing. — Sect, de Biol. Gener. et Appl.. Univ. de Lyon. 43 Bd. du 11 Novembre 1918. 69 VILLEURBANNE. France a Metabolisme des acides nucleiques. Euglena gracilis (Euglenophyceae) HELFENBEIN. L. L. B.Sc. — Dept. of Biol.. Kharkov State Univ.. Dzerjinsky Square 4, KHARKOV. U.S.S.R. a Investigations on the history of embryology, (particularly Invertebrata) HEMMINGS. W. A. D.Sc. — Dept. of Zool.. Univ. Coll. of North Wales. BANGOR. Caem.. Wales, U.K. a Immunological relations of mother and fetus. (Mammalia ) HENDELBERG. J. Fil.lic. — Zool. Inst.. Univ. of Uppsala. Villavagen 9, UPPSALA. Sweden a Spermiogenesis (Plathelminthes) HENDRICKX, A. G. Ph.D. — Div. of Biol. Growth and Developm.. Southwest Found, for Research and Educ. P.O. Box 28147. SAN ANTONIO. Tex. 78228. U.S.A. a Descriptive morphology of the embryo (fertilization through fourth month). Papio spec. (Primates) h Determination of ovulation time. Papio spec. (Primates) c Thalidomide induced anomalies. Papio spec. (Primates) HENLEY. Miss C. Ph.D. — Dept. of Zool.. Univ. of North Carolina. CHAPEL HILL. N.C. 27515. U.S.A. HENNEN. Miss S. Ph.D. — Dept. of Biol, Marquette Univ.. 530 North 15th St., MIL- WAUKEE. Wis. 53233. U.S.A. HENNIG. W. Dr.rer.nat. — Max Planck Inst, fiir Biol.. Abt. Beermann. Spemannstr. 34. 74 TUBINGEN. W.Germany a Biochemical aspects of sperm differentiation: Y-chromosome function in spermatogenesis. Drosophila hydei (Diptera) HENRIKSON. R. C. Ph.D. — Med. School. Boston Univ.. 80 E. Concord St., BOSTON. Mass. 02118, U.S.A. HERBERT. C. F. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London. Gower St., LONDON W.C.I. England a Investigation of early neurulation. Pygoscelis adeliae. P. antacctica, P. papua (Impennae, Aves) b Investigation of the development of the supraorbital glands. Pygoscelis adeliae (Impennae, Aves) HERLANT (MEEWIS). Mrs. H. Dr.en Sci.Zool.. Prof. — Lab. de Biol. Anim. et Histol. Comp.. Univ. libre de Bruxelles, Av. F.D. Roosevelt 50, BRUXELLES 5, Belgium HERMAN. L. Ph.D.. Prof. — Dept. of Pathol. Downstate Med. Center. State Univ. of New York. 450 Clarkson Ave.. NEW YORK. Brooklyn. N.Y. 11203. U.S.A. a Electron microscopy of normal and urethane induced changes in embryonic neural tube cells and lung tissue cells. Mus musculus (Rodentia) HERNANDEZ. Miss C. E. M.D. — Cat. de Embriol. Fac. de Med.. Univ. de Los Andes, MfiRIDA. Venezuela HERNANDEZ (VERDUN). Mrs. D. F. Dr.3e Cycle — Inst. Natl de la Sante et de la Rech. Med.. Unite de Physiol, placentaire. Hopital Saint-Antoine. 184 rue du Faubourg Saint-Antoine. PARIS Xlle. France a Electron microscopy of the placental membrane. Rattus norvegicus, Mus musculus (Roden- tia) HEROLD, R. C. Ph.D. — Dept. of Biol. Grad. School of Arts and Sci.; Lab. of Histol. and Embryol. School of Dental Med.. Univ. of Pennsylvania. PHILADELPHIA. Pa. 19104, U.S.A. a Developmental study of flight muscle mitochondria structure and function (biochemistry and electron microscopy). Apis mellitera (Hymenopteca) b Development of embryonic fine structure, mitochondria and cell membrane; effect of chemical treatments. Echinarachnius pacma (Echinoidea) c Comparative development and ultrastructure of dentines ( osteodentine and vasodentine). Esox lucius, Gadus callarius (Teleostei) d Development of embryonic skeletal structure; normal ultrastructure and effect of sodium fluoride. Echinarachnius parma (Echinoidea) HERRMANN, H. M.D., Prof. — Inst, of Cell. Biol, Dept. of Zool, Univ. of Connecticut, STORRS, Conn. 06268, U.S.A. • HERZBERG, F. M.S. — Dept. of Anat.. Center for the Health Sci., Univ. of California, LOS ANGELES, Calif. 90024, U.S.A. HESS, O. Dr.rer.nat. — Lab. fiir Chromosomenforsch., Biol. Inst. I der Univ., Schanzlestr. 11, 7800 FREIBURG, W.Germany • a Experimental embryology. (Mollusca) b Gene physiology, Y chromosome. Drosophila spp. (Diptera) c Genetic regulation of differentiation; male germ line cells. Drosophila spp. (Diptera) HEWITT. W. M.B.. B.S. — Dept. of Anat.. St. Thomas's Hosp. Med. School. LONDON S.E.I. England a Development of the brain. Homo sapiens and other spp. (Mammalia) 76 HEYN, A. N. J. Prof. — Dept. of Biol., Louisiana State Univ. in New Orleans, Lake Front, NEW ORLEANS, La. 70122, U.S.A. a Egg shell formation and structure. Gallus domesticus (Aues) b Ultrastructure of cell wall in relation to development. (Plantae) HIBBARD, E. Ph.D., Prof. — Dept. of Biol., Coll. of Sci., Pennsylvania State Univ., 208 Life Sciences I, UNIVERSITY PARK, Pa. 16802, U.S.A. a Effects of polarity on differentiation of sensory structures and outgrowth of nerve fibres. Xenopus laevis & other spp. (Amphibia) HICKEY, Miss E. D. M.A. — Div. of Cell Biol, and Chem. Embryol., Zool. Inst., Univ. of Bern, Sahlistr. 8, CH-3000 BERN, Switzerland a Effects of thyroxine on isolated tadpole tails. Xenopus laevis (Anura) (in collaboration with R. WEBER) HICKLIN, Miss J. B. B.A. — Dept. of Biol, as Appl. to Med., The Middlesex Hosp. Med. School, Cleveland St., LONDON, W.l. England a Investigation of factors controlling polarized regulation of a linear pattern (techniques: cutting, grafting and action of various inhibitors). Hydra littoralis (Hydrozoa) HIKAMI, Y. B.Sc. — Lab. of Anim. Nutr., Fac. of Agric, Kobe Univ.. 1 Rokkodai-cho, Nada-ku, KOBE, Japan a The effect of growth regulating substances on embryonic muscle growth. Gallus domesticus (Aves) HILD, W. J. M.D., Prof. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex. 77550, U.S.A. a In vitro development of retinal explants; differentiation of sensory cells and synaptic complexes. Rattus norvegicus (Rodentia), Felis domestica (Carnivoca) HILFER, S. R. Ph.D., Prof. — Dept. of Biol., Temple Univ., Broad and Berks St., PHILA- DELPHIA, Pa. 19122, U.S.A. a Effect of pituitary extirpation on reamputation and regeneration or regenerating limbs. Triturus viridescens (Urodela) h Stability of dissociated embryonic thyroid cells as measured by morphological and chemical criteria of differentiation. Gallus domesticus (Aves) c Electron microscopy of differentiating thyroid cells. Gallus domesticus (Aves) HILLMAN, Mrs. N. WILLIAMS Ph.D. — Dept. of Biol., Temple Univ., Broad and Berks St., PHILADELPHIA, Pa. 19122, U.S.A. HINDMAN, J. L. Ph.D., Prof. — Dept. of Botany, Univ. of Georgia, ATHENS, Ga. 30601, U.S.A. a Protein changes in the apex during photoperiodic induction, with special interest on the changes associated with the differentiation of the various floral organs. Chenopodium alba ( Chenopodiaceae) h Factors affecting formation of callus from floral apices and the subsequent differentiation of the callus tissue into organized buds. Nicotiana tabacum (Solanaceae), Aquilegia spec. (Ranunculaceae) KINDS, J. W. Ph.D. — Dept. of Anat., School of Med., Boston Univ., 80 E. Concord St., BOSTON, Mass. 02118, U.S.A. a Golgi impregnation and electron microscopic study of neurogenesis and gliogenesis in the olfactory bulb. Mus musculus, Rattus domesticus (Rodentia) HINRICHSEN, K. Dr.med., Prof. — Anat. Inst, der Univ., Osterbergstr. 3, 74 TUBINGEN, W.Germany HINSCH, Miss G. W. Ph.D., Prof. — Inst, of Molec. Evolut., Univ. of Miami, 521 Anas- tasia Ave., CORAL GABLES, Fla. 33134, U.S.A. HINTON, H. E. Ph.D.. D.Sc, Prof. — Dept. of Zool., Univ. of Bristol. BRISTOL BS8 lUG. England HIRABAYASHI, T. M.A. — Inst, of Zool., Fac. of Sci.. Tokyo Kyoiku Univ.. Otsuka 3-29-1. Bunkyo-ku. TOKYO, Japan HIRADHAR. P. M.Sc. — Dept. of Zool., Fac. of Sci., M.S. Univ. of Baroda, BARODA-2. India a Tail regeneration in the adult. Hemidactylus flaviviridis (Lacertilia) HIRAIWA, Y. K. t D.Sc, Prof. — Seinan Gakuin Univ., FUKUOKA, Japan (deceased) HIRAKOW, R. D.Med.Sc. — Dept. of Anat., School of Med., Tokyo Med. and Dental Univ., Yushima, Bunkyo-ku, TOKYO, Japan HIRAMOTO, Y. D.Sc, Prof. — Misaki Marine Biol. Station, Univ. of Tokyo, MISAKI, Kanagawa-ken, Japan • a Cell division. (Echinoidea) h Physical properties of marine eggs. (Echinoidea) c Physiological studies on fertilization. (Echinoidea) HIRANO, C. Ph.D. — Div. of Entomol., Natl. Inst, of Agric. Sci.. Nishigahara. Kita-ku. TOKYO. Japan 77 HIRN, M. Dipl.d'Etud.Approf. — Lab. de Morphogenet. Anim., Fac. des Sci., Place Victor Hugo, 13 MARSEILLE 3, France a Regeneration. Cercyra hastata (Turbellaria) HISAOKA, K. K. Ph.D. — Natl. Inst, of Dent. Res., Natl. Inst, of Health, BETHES- DA, Md. 20014, U.S.A. (no embryological work in progress) HISHIDA, T. D.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA. Japan i HOADLEY, L. Ph.D., Prof. (Emer.) — Biol. Labs., Harvard Univ., 16 Divinity Ave., I CAMBRIDGE, Mass. 02138, U.S.A. • i HOAR, R. M. Ph.D. — Teratol. Sect., Dept. of Exper. Pathol, and Toxicol., Research Div., Hoffman-La Roche Inc., NUTLEY, N.J. 07110, U.S.A. a Studies on the relationship between hyperadrenal conditions and birth defects, in particular glucose-6-phosphate dehydrogenase in the spinal cord of developing embryos exposed to maternal hyperadrenocorticalism. Cavia porcellus (Rodenfia) HOARAU, F. Dr.spec. — Lab. de Morphogenet. Anim., Fac. des Sci., 1 Place Victor Hugo, 13 MARSEILLE 3, France a Analyse des territoires de regeneration. Helleria brevicornis (Isopoda, Crustacea) HOBBS, M. J. Ph.D. — Dept. of Anat., Univ. Coll., Gower St., LONEXDN W.C.I, England a Differentiation in colonial forms. Pleodorina spp. (Voluocales, Chlorophyceae) HOCKER, W. Dr.rer.nat. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN-Lindenthal, W. Germany a The effects of STH and LTH and of auxiliary hormones on the postembryonal growth. Columba pahimbus (Aves) HOFMAN, Miss L. M.Sc. — Inst, of Biol., Univ. of Zagreb, Salata, ZAGREB, Yugoslavia a Regulation of compensatory growth. Rattus norvegicus (Rodenfia) (in collaboration with M. MULLER) HOFMANN, D. K. Dr.rer.nat. — Inst, fiir Entw. physiol., Univ. zu Koln, Gyrhofstr. 17, 5 KOLN-Lindenthal, W.Germany a Experimental studies on the endocrine control of caudal regeneration. Platynereis dumerilii (Polychaefa) h Histological investigations on cranial and caudal regeneration. Eunice uiridis (Potychaeta) c Neurosecretory phenomena in the central nervous system of specimens of different sexual development stage. Eunice viridis (Polychaeta) HOGLUND, L. R. Fil.kand. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, Sweden a Polysaccharide metabolism, especially glycoproteins and mucopolysaccharides. Rana spp. (Anura) HOHL, H. R. Dr.sc.nat., Prof. — Dept. of Anat. and Cytol., Univ. of Zurich, Birchstr. 95, 8050 ZURICH, Switzerland a Submicroscopic morphogenesis. Dictyostelium discoideum and other spp. (Acrasiales) h Submicroscopic morphogenesis. Phytophthora parasitica and other spp. (Phycomycetes) HOLAK, H. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE 8, Poland a Development of ultimobranchial body. (Amphibia) HOLLAND, J. J. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037, U.S.A. a Action of viruses on development. (Mammalia) h Translational factors in cellular differentiation. (Mammalia) HOLLYFIELD, J. G. Ph.D. — Dept. of Ophthalmology, Coll. of Physicians and Surgeons. Columbia Univ., 630 W. 168th St., NEW YORK. N.Y. 10032, U.S.A. a Retinal changes at metamorphosis. Rana pipiens, Xenopus laevis (Anura) b Growth of the visual system. Xenopus laevis (Anura) HOLM, K. A. Fil.Dr. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Experimental investigation of the embryo (determination, prospective significance of embryonic areas). (Araneae, Arachnoidea) HOLSTEIN, A.-F. Dr.med. — Anat. Inst, der Univ. Hamburg, Martinistr. 52, 2-HAMBURG 20, W. Germany a Morphologische und Elektronenmikroskopische Untersuchungen zur Entwicklung der ab- leitenden Samenwege. Homo sapiens (Primates) h Fluoreszenzmikroskopische Untersuchungen der Spermatozoen. Oryctolagus cuniculus (Lagomorpha) c Entwicklung des Hodens. Homo sapiens (Primates) HOLTER, H. Ph.D. — Physiol. Dept., Carlsberg Lab., 10, Gl.Carlsbergvej, COPEN- HAGEN, Valby, Denmark • HOLTFRETER, J. K. F. Ph.D., Prof. — Dept. of Biol., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER, N.Y. 14627, U.S.A. HOLTZER, H. Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of Pennsylvania. PHILADELPHIA, Pa. 19104, U.S.A. 78 HOMANN, H. Dr.rer.nat. — I. Physik. Inst., Univ. Gottingen, Bunsenstr. 9, 34 GOT- TINGEN, W.Germany a Development of eyes. (Araneae, Oxyopidae. Ctenidae, Zoropsidae. Agelenidae. Dysderidae, Philodromidae, Araneida) HOPERSKAYA, Mrs. O. A.— Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Transfilter induction of lenses, neural and retinal tissues by eye rudiments in gastrula ectoderm and the dependence of their appearance of the duration of induction. Rana temporaria (Anura) b Analysis of inductive interactions of the cells of differentiating retina by means of com- binations of cells of the eye rudiment and gastrula ectoderm. Rana temporaria, R. esculenta (Anura), Callus domesticus (Aves) (in collaboration with G. V. LOPASHOV) c Analysis of conditions of the initiation of development and the positioning of axial rudiment in the early blastoderm. Leuciscus becgi (Cyprinidae), Epiplatys shaped (Cyprinidontidae, Teleostei) HORI, R. D.Sc. — Biol. Inst., Fac. of Lit. and Sci., Toyama Univ., Gofuku 3190, TOYAMA (930) Japan a Sodium and potassium content, ionic permeability and fertilization phenomena (radioisotope studies). Hemicentrotus pulcherrimus (Echinoidea), Oryzias latipes (Teleostei) HORIKAWA, M. D.Sc. — Dept. of Genet., Univ. of Wisconsin, MADISON, Wis. 53706. U.S.A. • HORKf, Z. M.D. — Dept. of Obstet. and Gynecol., Med. School, Univ. of Greifswald, X 22 GREIFSWALD, East.Germany HORN, E. C. Ph.D., Prof. — Dept. of Zool., Duke Univ., DURHAM, N.C. 27706, U.S.A. a Isolation and characterization of cytoplasmic histones in embryonic cells. (Amphibia) h Hemolymph protein changes and carotenoid pigment distribution during the reproductive cycle. Callinectes sapidus (Decapoda, Crustacea) c Ontogenesis of the immune mechanism. (Marsupialia) HORNBLAD, P. Y. M.D. — Lab. of Teratol., Karolinska Inst., S-104 01 STOCKHOLM 60, Sweden a Experimental studies on closure of the ductus arteriosus and causes of its patency. Oryc- tolagus cuniculus (Lagomorpha), Mus musculus, Rattus norvegicus, Cavia porcellus (Rod' entia), Sus domesticus, Ovis aries (Artiodactyla) HORNBY, Miss J. E. B.Sc. — Dept. of Zool., Fac. of Sci., Univ. of Reading. READING RGl 5AQ, Berks, England a Studies on the adhesion of embryonic cells (Aves; Mammalia) HORSFALL. W. R. Ph.D.. Prof. — Dept. of Entomol., Univ. of Illinois, 320 Morrill Hall, URBANA, 111. 61801, U.S.A. a Imaginal teratogenesis by thermal stress (morphological and histological changes). Aedes sierrensis, A. punctor, A. communis, A. stimulans, A. nigripes, A. impiger (Culicidae, Dipfera) H5RSTADIUS, S. Fil.Dr., Prof. — Zool. Inst., Univ. of Uppsala, Villavagen 9, 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. (Echinoidea) HORSTMANN, E. Dr.med. et phil.. Prof. — Anat. Inst, der Univ. Hamburg, Martinistr. 52. 2000 HAMBURG-Eppendorf, W.Germany a Spermatozoen und ductus epididymidis. Oryctolagus cuniculus, Canis familiaris. Homo sapiens (Mammalia) h Electron microscopic studies of spermatozoa and spermatogenesis. Ornithodorus moubata (Argasidae; Acarina), Ceophilus linearis (Chilopoda), Craphidostreptus spec. (Diplopoda) HORSTMANN, H.-J. Dr.phil.nat. — Physiol.-Chem. Inst, der Univ. Erlangen-Niirnberg, Wasserturmstr. 5, 852 ERLANGEN, W.Germany (no embryological work in progress) HORTON, K. M. A.B. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104. U.S.A. a Hormonal interactions and protein synthesis in mature oocytes. Xenopus laevis (Anura) HORVATH, Miss C. M.D. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDAPEST IX, Hungary a Teratogenesis. Callus domesticus (Aves), Rattus rattus (Rodentia) HOSHI, M. M.Sc. — Biol. Inst., Coil, of Gen. Educ, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan HOSHINO, K. M.D.. D.med.Sc. Prof. — Dept. of Anat., Health Sci. Center, Univ. of Western Ontario, LONDON, Ont., Canada a Development and growth of mammary glands after prenatal exposure to hormones and carcinogen. Mus musculus (Rodentia) 79 b Influences of hormones and carcinogen upon mammary growth of male and female immature animals. Mus musculus (Rodentia) c Regeneration of transplanted mammary glands. Mus musculus (Rodentia) HOSHINO, K. M.D. — The Research Inst, of Environm. Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA. 464 Japan a Effects of ionizing radiations upon embryos of different species. Mus musculus, Rattus norvegicus (Rodentia) (in collaboration with U. MURAKAMI, Y. KAMEYAMA and Miss T. NAKAYAMA) b Effects of some chemical substances upon the embryo. Mus musculus. Rattus norvegicus (Rodentia) (in collaboration with Y. KAMEYAMA) c The skeletal development of the embryo. Mus musculus, Rattus norvegicus (Rodentia) d Morphogenesis of exencephaha and its allied conditions. Rattus norvegicus (Rodentia) (in collaboration with U. MURAKAMI) e Morphogenesis of spina bifida and its allied conditions. Rattus norvegicus (Rodentia) (in collaboration with U. MURAKAMI) HOTTA, Y. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037. U.S.A. a Regulation of DNA synthesis during meiotic development. Trillium erectum. Lilium longi- florum, Tulipa gesneriana, Vicia {aba, Bellevalia romana HOUGH (RAYMOND), Mrs. B. R. Ph.D. — Rockefeller Univ., 66th St. and York Ave., NEW YORK. N.Y. 10021, U.S.A. a Study of gene activity in oogenesis, the species and function of nucleic acids produced in lampbrush stage oocytes. Xenopus laevis (Anura) (in collaboration with E. H. DAVID- SON) b Study of the molecular basis of cytoplasmic prelocalization. Ilyanassa obsoleta (Gastro- poda) (in collaboration with E. H. DAVIDSON) HOUILLON, Ch. Dr.es Sc, Prof. — Lab. de Biol. Anim. (2e sect.), Fac. des Sci., Univ. de Paris, 12 rue Cuvier, 75 PARIS Ve, France • HOURDRY, J. — Lab. d'Anat. Comp., Fac. des Sci. d'Orsay, Univ. de Paris, Batiment 441, 91-ORSAY, France a Modifications de I'epithelium intestinal au cours de la metamorphose (microscopie elec- tronique). Discoglossus pictus, Alyfes obstetricans (Anura) HOUTHOFF, H. J. Med.Drs. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O., Netherlands a Degeneration and regeneration of anterior horn cells in the spinal cord of spinal ganglion cells and of the proximal stump following sciatic axotomy (histological and histochemical methods). Gallus gallus (Aves) HROCH. M. Dr. — Dept. of Biol.. Med. Fac, Charles Univ., Simkova 870, HRADEC KRALOVfi, Czechoslovakia a Nucleolus during myogenesis in vitro studied by phase-contrast time-lapse cinemato- graphy. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) (in collaboration with J. GAYER and V. PUZA) HSU (LIANG), Mrs. C. Y. Ph.D., Prof. — Dept. of Biomorphics, Natl. Defense Med. Center, P.O. Box 7432, TAIPEI, Taiwan, Republ. of China a The action of aureomycin on the growth of thyroidectomized tadpoles. Rana catesbeiana (Anura) h Ageing of thyroidless tadpoles. Rana catesbeiana (Anura) c Urine nitrogen of thyroidectomized tadpoles. Rana catesbeiana (Anura) d The effect of aureomycin on tadpole development as influenced by temperature. Rana narina (Anura) e Food intake of aureomycin-treated tadpoles. Rana catesbeiana (Anura) f Correlation between experimental sex-differentiation and pituitary cytology. Rana cates- beiana (Anura) g The mechanism of growth-promoting effect of aureomycin in young animals. Gallus domesticus (Aves) h Experimental sex reversal with high temperature. Rana spp. (Anura) HUANG, Ru Chih C. Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th St., BALTIMORE, Md. 21218, U.S.A. a Chemistry of chromosomal protein and chromosomal RNA. Gallus domesticus (Aves) h Regulation of gene function at the molecular level. Gallus domesticus (Aves) HUBBY, J. L. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Physiological genetics. Drosophila spec. (Diptera) HUBER, W. D.Sc. Prof. — Naturhist. Museum, Bernastr. 15. CH-3000 BERN, Switzerland a Biometrie des Schadels. Canis familiaris (Carnivora), Capreolus capreolus. Rupicapra rupi- capra (Artiodactyla) b Postembryonales Wachstum. Canis familiaris (Carnivora) c Geschlechtszyklus. Rupicapra rupicapra (Artiodactyla) 80 HUBERT, J. D.E.S. — Lab. de Biol. Anira., 1 Av. Vercingetorix, 63 CLERMONT-FER- RAND, France a Regulation de I'oeuf. Lacerta vivipara (Lacertilia) b Lignee germinale; etude descriptive et experimentalc; ultrastructure de la cellule germinale. Lacerta agilis, Anguis fcagiUs, Vipera aspis (Reptilia) HUBSCHMAN, J. H. Ph.D. — Dept. of Biol., Div. of Sci. and Engin., Wright State Univ., Col. Glenn Highway, DAYTON, Ohio 45431, U.S.A. a Endocrine control of growth and development (metamorphosis) in larvae. Palaemonetes spp. (Decapoda, Crustacea) HUCKINS, Miss C. Ph.D. — Dept. of Anat., McGill Univ., MONTREAL 2, Que., Canada a The morphology of the spermatogonia! population in growing animals as visualized on segments of seminiferous tubules mounted in t o t o. Rattus noruegicus (Rodentia) b The cell cycle times of the spermatogonia! population in prepuberal animals using whole mount radioautography. Rattus norvegicus (Rodentia) HUET, C. — Lab. de Biol. Anim., Univ. de Paris, Fac. des Sci. d'Orsay, 91 ORSAY. France a Developpement de I'appareil genital 6 et ? de la larve. Tenebrio molitor (Coleoptera) HUET, M. Lab. de Biol. Anim., Univ. de Paris, Fac. des Sci. d'Orsay, 91 ORSAY, France a Regeneration (influence des rayons X, du systeme nerveux). Asterina gibbosa (Asteroidea) HUGHES, A. F. W. Ph.D., D.Sc. — Dept. of Anat., School of Med., Western Reserve Univ., CLEVELAND, Ohio, U.S.A. HULTIN, J. M. T. Fil.Dr. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden • a Protein and nucleic acid metabolism in early development. Artemia salina (Anostraca, Crustacea), (Echinoidea) HUMEAU, C. Lab. d'Histol., Fac. de Med., 2 rue Ecole de Medecine, 34 MONTPELLIER, France a Electron microscopic study of oogenesis. (Amphibia) b Electron microscopic study of atretic oocytes. Triturus helveticus (Urodela) HUMWSKL S. Dr.hab. — Chair of Zool., Coll. of Agricult.. Cybulskiego 20, WROCILAW, Poland a Influence of food, light, temperature and hormones on the male sexual apparatus during the resting period. Microtus arvalis, M. agrestis (Mictotidae, Rodentia), Apodemus agrarius A. flavicollis, Mus musculus (Muridae, Rodentia) HUMMEL, Miss K. P. Ph.D. — The Jackson Lab., BAR HARBOR, Me. 04609, U.S.A. a Developmental anatomy and genetics. Mus musculus (Rodentia) HUMPHREY, R. R. Ph.D., Prof. (Emer.) — Dept. of Zool., Indiana Univ., BLOOMING- TON, Ind. 47401, U.S.A. • HUMPHREY, Miss T. M.D., Ph.D., Prof. — Dept. of Anat., Univ. of Alabama Med. Center, 1919 Seventh Ave. South, BIRMINGHAM, Ala. 35233, U.S.A. • HUMPHREYS, T. D. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037. U.S.A. a RNA and protein synthesis in embryos. Acbacia puncfulafa. Strong ylocentrotus purpuratus, Lythechinus pictus, (Echinoidea) h Characterization of aggregation factor. Microciona prolifera, M. parthena, Haliclona occu- lata (Porifera) HUMPHREYS, W. J. Ph.D., Prof. — Electr. Micr. Lab., Univ. of Georgia, Barrow Hall, ATHENS, Ga. 30601, U.S.A. a Ultrastructure of blastomeres in mosaic eggs. Mytilus edulis (Lamellibranchia) b Desiccated cytoplasm of viable, encysted embryos is studied by transmission electron microscopy of thin sections, replicas of frozen-fractured preparations, and by scanning electron microscopy. Artemia salina (Anostraca) c Macromolecular structures in extracellular coats of unfertilized and fertilized eggs are compared by electron microscopy of replicas of frozen-etched preparations. Strongylo- centrotus purpuratus (Echinoidea) HUMPHRIES, A. A., Jr. Ph.D., Prof. — Dept. of Biol., Emory Univ., ATLANTA. Ga. 30322, U.S.A. a Oviduct-oocyte relationships. (Amphibia) b Chemistry and physiology of egg jelly. (Amphibia) c Ultrastructure of oocytes. (Amphibia) d Fertilization. (Amphibia) HUNT, Miss D. M. A.B. — Worcester Found, for Exp. Biol., 222 Maple Ave.. SHREWS- BURY, Mass. 01545. U.S.A. a Fertilization in vivo and in vitro, gonadogenesis, and irradiational effects on early embryonic stages (morphology and physiology). Oryctolagus cuniculus, Lepus americanus, Sylvilagus transitionalis (Lagomorpha), Cavia porcellus, Mus musculus, Rattus rattus, Mystromys albicaudatus, Mesocricetus auratus, (Rodentia) Mustela furio (Carni- vora) HUNT. E. L. Ph.D.. D.Sc, Prof. — Dept. of Biol., Emory Univ., ATLANTA. Ga. 30322, U.S.A. 81 a Studies on the estrus cycle and gestation in alloxan-diabetic animals. Rattus norvegicus (Rodentia) b Developmental pathology of the endocrine pancreas. Gallus domesticus (Aves) HUNTER, R. M. B.S. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada a Microspectro-photometric analysis of pseudoplasmodial differentiation. Dictyosfelium dis- coideum (Acrasiales) (in collaboration with D. W. FRANCIS) HUREAU, J. Prof. — Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie, France HtlRLIMANN, R. dipl.phil.II — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16, CH 8006 ZORICH, Switzerland a Protein pattern during development as revealed by disc-electrophoresis. Drosophila melano' gaster, Phormia cegina (Diptera) HUSON, A. M.D. — Anat.-Embryol. Lab., Fac. of Med., State Univ. of Leiden, Was- senaarseweg 62, LEIDEN, Netherlands a Development of vertebral column. Homo sapiens (Primates) HUVER, C. W. Ph.D., Prof. — Dept. of Zool., Coll. of Biol. Scis., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. a Cytology of fertilization. Fundulus heteroclitus (Teleostei) b Mechanism of blastodisc formation; site and origin of blastodisc. (Teleostei) c Sex differentiation. Anguilla bostoniensis (Teleostei) d Hermaphroditism. Gasterosteus aculeatus (Teleostei) e Cytochemistry of spermatogenesis. Fundulus diaphanus (Teleostei) i Growth. Perca flavescens (Teleostei) g Chromosome numbers. Fundulus heteroclitus, F. diaphanus (Teleostei) HYODO (TAGUCHI), Mrs. Y. D.Sc. — Div. of Biol., Natl. Inst, of Radiol. Sci., Anagawa 4-9-1, CHIBA, (280) Japan a Change in radiosensitivity of germ cells during embryonic development. Oryzias latipes (Teleostei) b Embryology of reproductive organs. Oryzias latipes (Teleostei) ICHIKAWA, A. D.Sc, Prof. (Emer.) — Zool. Inst., Fac. of Sci., Hokkaido Univ., North 10, West 8, SAPPORO, 060 Japan a Development and life-history of Japanese forms. (Rhizocephala, Crustacea) b Propagation and regeneration. (Turbellacia) ICHIKAWA, M. D.Sc, Prof. (Emer.) — Lab. of Developm. Biol., Zool. Inst.. Fac. of Sci.. Univ. of Kyoto, Kitashirakawa, Sakyo-ku, KYOTO, Japan • IFFT, J. D. Ph.D.. Prof. — Dept. of Anat., School of Med., Boston Univ., 80 E. Concord St.. BOSTON. Mass. 02118. U.S.A. a Autoradiagraphic studies of hypothalamus development. Rattus domesticus (Rodentia) IGNATJEVA. Mrs. G. M. Cand.biol.sci. — Inst, of Developm. Biol.. Acad, of Sci. of the U.S.S.R.. Vavilov St 26. MOSCOW B-133, U.S.S.R. a Investigation of the relative duration of embryonic periods in connection with the morpho- genetic function of yolk. Misgurnus fossilis, Esox lucius, Cacassius carassius and other spp. (Teleostei), Amby stoma mexicanum (Urodela) IKEDA, Miss M. Ph.D. — Embryol. Sect.. Dept. of Biol.. Tokyo Metropolitan Univ.. 2-1-1 chome. Fukazawa-machi. Setagaya-ku. TOKYO (158), Japan a UV-irradiation and SH radicals in eggs. Hemicentrotus pulcherrimus (Echinoidea) b Protein synthesis in synchronized cultures. Tetrahymena spec. (Holotricha, Ciliata) c Protein synthesis in eggs. Hemicentrotus pulcherrimus (Echinoidea) IKUSHIMA, N. D.Sc. — Biol. Lab.. Kansai Med. School, HIRAKATA. Osaka Pref.. Japan ILIES, A. Dr.Biol.Sci. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Normal and pathological necrotic areas in embryonic development. Homo sapiens (Pri- mates) IMAHORI, K. D.Sc, Prof. — Dept. of Biol., Coll. of Gen. Educ, Osaka Univ.. Toyonaka. OSAKA, 560 Japan a Morphogenesis, especially of sporelings. (Characeae) IMAIZUMI, T. D.Sc. — Zool. Inst., Fac of Sci., Univ. of Kyoto, Sakyo-ku. KYOTO. Japan IMBERSKI, R. B. Ph.D. — Dept. of Zool., Univ. of Maryland, COLLEGE PARK, Md. 20742, U.S.A. a Stage-specific and tissue-specific occurrence of proteins during development. Drosophila melanogaster (Diptera), Ephesfia kiihniella (Lepidoptera) b Regulation of gene expression during development. Drosophila melanogaster (Diptera), Ephestia kiihniella (Lepidoptera) IMMERS, J. Fil.Dr. —The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden a Biochemical factors in development, particularly the role of mucopolysaccharides. (Echi- noidea) 82 b Changes in interaction between proteins and nucleic acid in the course of early development. Paracentcotus lividus, Psammcchinus miliacis (Echnoidea) IMOH, H. M.Sc. — Dept. of Biol.. Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA, 812. Japan a Basic proteins in developing embryos. Triturus pyrrhogaster (Urodela) h Changes in macromolecular synthesis and composition during primary induction. Triturus pyrrhogaster (Urodela) INFANTE, A. A. Ph.D. — Dept. of Biol., Wesleyan Univ., MIDDLETOWN, Conn. 06457, U.S.A. a Control of protein and nucleic acid synthesis during embryonic development (density gradient centrifugation, in vivo and in vitro protein synthesis, electrophoretic separations). Strong ylocenfrotus purpuratus, Lytechinus pictus (Echinoidea) INDUE, S. Ph.D. — Lab. de Biol. Molec. Univ. de Montreal, B.P. 6128, MONTREAL, Que., Canada a Morphological and biochemical studies of the fertilization membrane, treatment of the isolated membrane with enzymes and chemicals, electron microscopy. Strongylocentrotus purpuratus (Echinoidea) b The fine structure of the egg surface membrane system (plasma and vitelhne membrane) and its changes after fertilization, studied on isolated membrane system and on embedded eggs. Arbacia punctulata, Strongylocentrotus purpuratus. (Echinoidea) lOANNOU, J. M. Ph.D. — Dept. of Anat., School of Med., LEEDS LS2 9NL, England a Fine structure and metabolic activity of oogonia and oocytes. Cavia cobaya (Rodentia) h Fine structure of female germ cells. Meriones meriones (Rodentia) c Maturation of female germ cells in vitro. Cavia cobaya, Meriones meriones (Rodentia) IRIE, R. B.S. — Natl. Inst, of Anim. Industry, CHIBA-shi, 280 Japan a UV-resistance of transforming DNA in germinating spores. Bacillus subtilis (Bacteria) ISHIDA, J. D.Sc, Prof. — Dept. of Biochem., Fac. of Sci. and Engin., Saitama Univ., Shimo-Okubo 255, URAWA-City, Japan o a Crystallization of hatching enzyme and its biosynthesis as a marker of cyto-differentiation. Oryzias latipes (Teleostei) b Mode of action of hatching enzyme in blastulae. Hemicentrotus pulcherrimus (Echinoidea) ISHIKAWA, M. D.Sc. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, Mie-ken, (517) Japan • a Physiological studies on fertilization and artificial parthenogenesis. Hemicentrotus puU cherrimus, Pseudocentrotus depressus (Echinoidea) (in collaboration with M. SUGIYAMA) ISHIKAWA, T. Dr.Vet.Med., Prof. — Dept. of Vet. Obstet., Fac. of Vet. Med., Hokkaido Univ., N 18, W 9, SAPPORO, (060) Japan a Cytogenetic investigation of congenital anomalies. Bos taurus (Artiodactyla) ISHIZAKI, H. D.Sc. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of Kyoto, Kitashirakawa, Sakyo-ku, KYOTO, Japan ISONO, N. Ph.D. — Embryol. Sect., Biol. Dept., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan a Carbohydrate metabolism of eggs. Hemicentrotus pulcherrimus (Echinoidea) b Acid soluble nucleotides of eggs and sperm. Hemicentrotus pulcherrimus (Echinoidea) ITO, I. M.D. — Natl. Cancer Centre Hosp., Tsukiji 5 chome, Chuoku, TOKYO, Japan ITO, R. M.S. — Dept. of Anat., Fac. of Med., Tokyo Med. and Dental Univ., 1-5-47, Yushima, Bunkyo-ku, TOKYO, 113 Japan a Mechanism of resorption of collagen fibres in the metamorphosing tadpole tail. Rana cates- beiana, R. japonica, Bufo vulgaris (Anura) lUCIF, S. Ph.D. — Dept. de Morfol. Hum. Func. e Aplic, Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, Caixa Postal 301, RIBEIRAO PRETO, S.P., Brazil a Allometric growth of the skull and the dental arch. (Rodentia) h Allometric growth of thyroidectomized animals. Rattus rattus (Rodentia) (in collaboration with A. R. CRUZ) c Allometric growth of the eye in hemispherectomized animals. Rattus rattus (Rodentia) in collaboration with R. AZOUBEL and A. R. CRUZ) d Effect of hemispherectomy on the thyroid gland. Rattus rattus (Rodentia) (in collaboration with R. AZOUBEL and A. R. CRUZ) IVANOVA (KASAS), Mrs. O. M. Dr.biol.sci., Prof. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. IVEMARK. B. I. M.D.. Prof. — Dept. of Pediat. Pathol., Karolinska Hosp., 10401 STOCK- HOLM, Sweden a Anatomy and pathology of the placenta (micro-angiography). Homo sapiens (Primates) h Lipid histochemistry of the placenta in pathologic pregnancy. Homo sapiens (Primates) c Fetal and neonatal immunity as reflected in the thymus and spleen (immunofluorescence). Homo sapiens (Primates) IVERSON, R. M. Ph.D., Prof. — Dept. of Biol., Univ. of Miami, CORAL GABLES, Fla. 33124, U.S.A. a Nucleic acids during development. Lytechinus variegatus (Echinoidea) 83 b Development of the mitotic apparatus and protein synthesis in eggs and embryos. (Echi- noidea) IWAMATSU, T. Ph.D. — Biol. Lab., Aichi-Kyoiku Univ.. KARIYA-City, Aichi, Japan — Worcester Found, for Exper. Biol., 222 Maple Ave., SHREWSBURY, Mass. 01545, U.S.A. a Maturation of gametes. Oryzias latipes (Teleostei) b Fertilization. Mesocricetus auratus, Mus musculus, Rattus norvegicus (Rodentia) IWASA, K. D.Sc. — Dept. of Biol.. Coll. of Gen. Educ, Osaka Univ., Toyonaka, OSAKA, 560 Japan a Physiological, morphological and biochemical studies on the formation of multi-cellular bodies from unicellular stages. Chlamydomonas spec, Chlorella spec. (Chlorophyceae). Phaeodactylum tricornutum ( Diatomeae ) b Sexual differentiation and recombination. Chlamydomonas spec. (Chlorophyceae), Phaeo- dactylum tricornutum (Diatomeae) IWASAKI, T. Ph.D. — Div. of Biol., Natl. Inst, of Radiol. Sci., Anagawa 4-9-1, CHIBA, (280) Japan a Effects of ionizing radiations on embryonic development. Artemia salina (Anostraca, Crustacea) b Cytological studies on the radiosensitivity of spermatogenesis. Bombyx mori (Lepidoptera) IWASA WA, H. D.Sc. — Biol. Inst., Fac. of Sci., Niigata Univ., NIIGATA, Japan a Embryological study on endocrine correlation. (Amphibia) b Comparative anatomy of genital system. (Amphibia) c Comparative histology of endocrine organs. (Amphibia) IWATA, F. D.Sc. — Zool. Inst., Fac. of Sci., Hokkaido Univ., North 10, West 8, SAP- PORO. 060 Japan a Studies on the comparative embryology with special reference to taxonomic interrelation- ships. (Nemertea) b Development and regeneration. Lineus vegitus (Nemertea) c Comparative embryology of some marine animals. Notoplana humilis (Polycladida, Tur- bellaria), Pugettia quadridens (Bcachyura, Decapoda) , Dendrodoris rubra (Opisthobranchia, Gastropoda) lYEIRI, Mrs. S. D.Sc. — Dept. of Biol., Fac. of Sci.. Kuyshu Univ., Hakozaki, FUKUOKA, 812 Japan a RNA metabolism of dissociated embryonic cells being affected by inductive agents. (Amphibia) b RNA-polymerase of the egg. Artemia salina (Anostraca, Crustacea) IZAWA, K. B. Fish. — Hamajima Marine Biol. Station, c/o Fac. of Fish., Pref. Univ. of Mie, 158 Edobashi 2-chome, TSU, Mie Pref. 514 Japan a Postembryonic development: Chalimus and copepodid stages. Caligus spec. (Copepoda, Crustacea) JACCARINI, Rev. V. M.A. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Cower St.. LONDON W.C.I. England a Analysis at cellular level of morphogenetic movements in sternum development. Coturnix coturnix japonica; Gallus domesticus (Aves), Mus musculus (Rodentia) JACOB, J. Ph.D. — M.R.C. Epigenet. Research Group. Inst, of Anim. Genet.. Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland, U.K. a Uitrastructure and ultrastructural cytochemistry of nucleolus in larval salivary gland cells. Smittia parthenogenetica (Chironomidae, Diptera) b Ultrastructural changes and patterns of RNA and protein synthesis in differentiating cells as studied by E. M. autoradiography. Tritunis alpestris (Urodela), Xenopus laevis (Anura) c Synthesis and transformations of cellular membranes: nuclear membranes in Hela cells; endoplasmic reticulum in cement gland cells of embryo. Xenopus laevis (Anura) (in col- laboration with C. H. WADDINGTON and Miss M. M .PERRY) d Nature of involvcir.ent of nucleolus in virus induced Lucke tumour cells. Rana pipiens (Anura) JACOBS, R. M. Ph.D. — Dept. of Oral Biol.. Coll. of Dent. Univ. of Iowa. IOWA CITY, Iowa 52240, U.S.A. a Placental transmission of muscle relaxants and their teratogenic effects. Mus musculus. (Rodentia) JACOBS, W. P. Ph.D. — Dept. of Biol., Princeton Univ., PRINCETON, N.J. 08540. U.S.A. a Experimental developmental morphology, using controlled environment chambers, electronic computer processing of data, and studies of hormonal effects on organ and cell differen- tiation. Caulerpa prolifera (Siphonales. Algae), Coleus blumei (Labiatae). Xanthium penn- sylvanicum (Compositae) JACOBSON, A. G. Ph.D.. Prof. — Dept. of Zool.. The Univ. of Texas. AUSTIN, Tex. 78712, U.S.A. a Induction and positioning of the nose, lens and ear. Taricha tocosa (Urodela) b Factors controlling the segregation of the optic vesicle into pigmented retinal epithelium and sensory retina. Taricha torosa (Urodela) 84 c Characterization of the endodermal substance that induces heart development. Taricha toTosa (Utodela) JACOBSON. D. CO. Fil.Dr. — Zool. Inst.. Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden • a Determination of the central nervous system. Ambystoma spec. (Urodela) h Experimental studies on fiber pattern formation in the medulla oblongata. Ambystoma spec. (Urodela) c The mechanism of neurulation. Ambystoma spec. (Urodela) d Cytoplasmic control of DNA synthesis in neurons. Mus musculus (Rodentia) JACOBSON. M. Ph.D. — Dept. of Biophys., The Johns Hopkins Univ., BALTIMORE. Md. 21218. U.S.A. JACOBSSON. A. Fil.mag. — Zool. Inst., Univ. of Gothenburg, 4de LSnggatan 7B, GCTE- BORG SV, Sweden JACQUES, Miss, S. Y. B.A. — Dept. of Zool., Coll. of Sci., Univ. of Western Ontario, LONDON, Ont., Canada a Biological effects of the "chemosterilant": Hempa (hexamethylphosphoric triamide) on embryonic cells and fibroblasts in culture. (Teleostei), Mus musculus (Rodentia) JACQUOT. R. L. D.Sc, Prof. — Lab. de Physiol. Anim.. Fac. des Sci., B.P. 347, 51 REIMS, France a Pre- and postnatal changes in glucose and glycogen metabolism of the liver cell; even- tually assays on isolated cultured hepatocytes; electron microscopic studies. Rattus nor- vegicus (Rodentia) (in collaboration with Mrs. C. PLAS) b Hemopoietic function of the foetal liver; factors controlling its progressive disappearance. Rattus noTvegicus (Rodentia) (in collaboration with J. NAGEL) c Endocrine function of the foetal pancreas; insulin blood levels in the foetus and in the mother. Rattus norvegicus (Rodentia) in collaboration with J. M. FELIX, B. C. J. SUTTER and Mrs. M. T. SUTTER (DUB)) JAFFE. L. F. Ph.D., Prof. — Dept. of Biol. Sci., Purdue Univ., LAFAYETTE, Ind. 47907, U.S.A. JAGERSTEN, K. G. M. Fil.Dr., Prof. — Zool. Inst., Univ. of Uppsala, Villavagen 9. UPPSALA, Sweden a Larval development. (Pogonophora) h Comparative study of larval development. (Invertebrata) JALOUZOT, R. — Lab. de Biol. Gen., Fac. des Sci., B.P. 347, 51 REIMS, France JAMES, B. L. Ph.D. — Dept. of Zool., Univ. Coll. of Swansea. Singleton Park., SWAN- SEA. Glamorganshire, Wales. U.K. JAMES, D. A. D.Phil. — Dept. of Biol., Univ. of Saskatchewan, SASKATOON, Sask., Canada a Immunological aspects of pregnancy. Mus spec. (Rodentia) h Physiology of invasive tissues: trophoblast and tumour. Mus spec. (Rodentia) JAMES, D. W. B.S. — Dept. of Anat. and Embryol., Univ. Coll., Gower St., LONDON W.C.I, England a In vitro studies of the central nervous system. Callus domesticus (Aves) JANDIERI, Miss K. M. — Dept. of Biophysics, Inst, of Exper. Morphol., Acad, of Sci. of the Georgian S.S.R., 51 St. Kamo. TBILISSI 2, U.S.S.R. a Participation of nuclear and cytoplasmic factors in regulation of DNA synthesis studied in isolated nuclei. Callus domesticus (Aves), Rattus norvegicus (Rodentia) JANS, D. E. Drs. — Muscular Dystrophy Res. Labs., Newcastle Gen. Hospt., NEW- CASTLE upon Tyne NE4 6BE, England a The quantitative measurement of RNA in normally differentiating myoblasts growing in tissue culture, and in comparable myoblasts cultured from dystrophic muscle. Callus domes- ticus (Aves), Mus musculus (Rodentia), Homo sapiens (Primates) (in collaboration with K. F. A. ROSS) b Measurement of the uptake by myoblasts of RNA fractions added to tissue culture media. Callus domesticus (Aves). Mus musculus (Rodentia), Homo sapiens (Primates) (in col- laboration with K. F. A. ROSS) JANSEN, J. M.D., Prof. (Emer.) — Anat. Inst.. Univ. of Oslo. Karl Johansgt. 47. OSLO. Norway • JANSSENS. P. A. Ph.D. — Dept. of Zool.. School of Gen. Studies. Australian Nat. Univ., P.O. Box 4, CANBERRA, A.C.T. 2600. Australia a Development of enzyme systems specially those concerned in nitrogen metabolism. Xenopus laevis (Anura) JAYLET. A. Lic.es Sci. — Lab. de Biol. Gener.. Fac. des Sci.. 118 Route de Narbonne, 31 TOULOUSE (04), France a Effets des rayons X sur la descendance d'animaux irradies; etude des anomalies chro- mosomiques. Pleurodeles waltlii (Urodela) b Etude d'un facteur recessif semi-letal. ac. Pleurodeles waltlii (Urodela) (en collaboration avec J. C. BEETSCHEN) 85 JELINEK, R. MUDr., CSc. — Dept. of Histol., Charles Univ.. Albertov 4, PRAGUE 2, Czechoslovakia a Quantitative changes of tissue, cellular and subcellular structure in normal and patho- logical ontogenesis of the central nervous system. (Vertebcata) h Secondary development of axial structures (origin of neural tube and somites from the tail bud, localization of proliferation centers). Gallus domesticus (Aves) c Elaboration of an appropriate method for testing the teratogenic activity of drugs. Gallus domesticus (Aves), Mus norvegicus albus (Rodentia) JIRASEK, J. E. CSc. — Embryol. Lab., Inst, for the Care of Mother and Child, nabn K. Marxe 157, PRAHA-Podoli, Czechoslovakia JIRSOVA, Miss Z. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4. PRAGUE 2, Czechoslovakia a Egg transplantation (electron microscopic and cytochemical studies of egg transport and implantation in experimental conditions). (Mammalia) h Electron microscopy and cytochemistry of tubal epithelium. (Rodentia; Carnivora). Homo sapiens (Primates) JIT, I. Ph.D.. Prof. — Dept. of Anat., Med. Coll.. ROHTAK, India a Development of the splanchnic nerves. Homo sapiens (Primates) h Development of striated muscle of oesophagus. Homo sapiens (Primates) c Ages of ossification of various bones in embryos and adults. Homo sapiens (Primates) d Structure and development of anal sphincters. Homo sapiens (Primates) JOHANSSON, K. B. G. Fil.lic. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCKHOLM, Sweden a Regulation of enzyme synthesis in cells in tissue culture. JOHN, H. — Inst, of Anim. Genet., King's Bldgs, West Mains Rd., EDINBURGH EH9 3JN. Scotland, U.K. JOHNEN, Miss A. G. Dr.phil. Doz. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN- Lindenthal, W.Germany • a Die Wirkungsspezifitat abnormer Induktoren in der Entwicklung. (Amphibia) h Die Bedeutung des Zeitfaktors beim Induktionsvorgang. Amby stoma spec, Triturus spec. (Urodela) c Untersuchungen iiber die Kompetenzverhaltnisse beim Ektoderm. (Urodela) JOHNSON. D. R. Ph.D. — Dept. of Anim. Genet., Univ. Coll. London, Wolfson House, 4 Stephenson Way, LONDON N.W.I. England a Studies of the relationship of the developing embryo to its surrounding fluids, and the way the relationship changes when the embryo is carrying mutant genes. Mus musculus (Rodentia) b Electron microscopy of abnormal tissues from animals carrying mutant genes. Mus mus- culus (Rodentia) JOHNSON, E. M. Ph.D., Prof. — Dept. of Anat. Sci., Coll. of Med.. Univ. of Florida, GAINESVILLE, Fla. 32601, U.S.A. a The ontogeny of isoenzymes and the influence of teratogenic agents thereon; mechanisms of teratogenesis. (Aves) JONES (HOLT), Mrs. E. C. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston. BIRMINGHAM 15. England a The effect of maternal age on morphology and development of fertilized eggs. Mas mus- culus (Rodentia) JONES, G. E. B.Sc. — Dept. of Cell Biol., Univ. of Glasgow. GLASGOW W.2. Scotland, U.K. a Effect of dielectric constant on the adhesion of embryonic cells. Gallus gallus (Aves) JONES, K. W. Ph.D. — Inst, of Anim. Genet.. Univ. of Edinburgh. West Mains Rd., EDINBURGH EH9 3JN. Scotland. U.K. a Small aggregate cultures of embryonic cells. Rana pipiens (Anura) b Ultrastructural effects of actinomycin D on cultured embryonic cells. Rana pipiens (Anura) c Molecular "hybridization" studies on cells cultured in vitro (extending current tech- niques of RNA/DNA annealing down to the cellular and tissue level). Rana pipiens (Anura) (in collaboration with H. JOHN) d Studies on the behaviour and differentiation of normal and dystrophic myogenic cells i n vitro and in vivo. Mus musculus (Rodentia) JONES. O. P. Ph.D., M.D., Prof. — Dept. of Anat., State Univ. of New York at Buffalo, 318 Capen Hall, BUFFALO, N.Y. 14214, U.S.A. a Embryonic blood cells in the yolk sac. Rattus spec. (Rodentia) b Electron microscopy of hepatic hematopoiesis. Rattus spec. (Rodentia), Homo sapiens (Primates) JONES. R. F. Ph.D. — Dept. of Biol. Sci., State Univ. of New York at Stony Brook, STONY BROOK, N.Y. 11790, U.S.A. a Physiology and biochemistry of development and differentiation during vegetative growth, asexual reproduction and gametogenesis. Chlamydomonas reinhardtii (Volvocales, Chloro- phyceae) , ,u • > b Control of vegetative and reproductive development. Marchantia polymorpha (Hepaticae) 86 JONES. R. W. Ph.D.. Prof. — Dept. of Zool.. Oklahoma State Univ., STILLWATER, Okia. 74074. U.S.A. a Relationships between rates of cell division in cleavage and rates of embryonic development. Brachydanio redo, Notropis girardi. Hybognathus placitus, Hybopsis aestivalis (Teleostei) JONES. W. E. Ph.D. — Marine Sci. Labs., Univ. Coll. of North Wales, MENAI BRIDGE, Anglesey, Wales, U.K. JONGH, H. J. de D.Sc. — Dept. of Anat. and Erabryol., Univ. of Groningen, Oostersingel 69. GRONINGEN, Netherlands a Functional morphology of the head with special reference to larval life and metamorphosis. (Anura) h Allometric growth of the eye. Rana pipiens (Anura) c Development of the dentition. (Blenniidae, Teleostei) JONGKIND. J. F. Ph.D. — Netherlands Central Inst, for Brain Research, IJdijk 28, AM- STERDAM. Netherlands a Energy utilization in cerebral hemispheres during embryonic development, using the techniques of Lowry c.s. Gallus domesticus (Aves) JONSSON, B. G. Fil.hc. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a The effect of various drugs (a.o. thalidomide) on embryonic development. Amby stoma spec. (Urodela). Rattus spec. (Rodentia), Oryctolagus spec. (Lagomorpha) JOSHI, Mrs. M. M. M.S. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India a Differentiation of the anterior horn cells of the spinal cord. Gallus domesticus (Aves) h The influence of the peripheral field on the morphogenesis of the anterior horn cells. Gallus domesticus (Aves) JOST, A. D. D.Sc, M.D., Prof. — Lab. de Physiol. Comp., Fac. des Sci., Univ. de Paris, 9 quai St. Bernard, 75 PARIS Ve, France • JOVICKI, Mrs. G. RISTIC B.Sc. — Inst, of Nucl. Sci "Boris Kidrich", BEOGRAD. Yugoslavia JUBERTHIE, C J. — Lab. Souterrain du C.N.R.S., 09 MOULIS (Ariege). France JUBERTHIE (JUPEAU), Mrs. L. — Lab. Souterrain du C.N.R.S., 09 MOULIS (Ariege), France JUDINA, Mrs. L. M. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENIN- GRAD B-164, U.S.S.R. a Embryonic development. Bunodactis stella (Zoantharia, Actinozoa) JUNG, E. Dr.rer.nat. — Zool. Inst, der Univ., Rontgenring 10, 87 WURZBURG, W.Germany a Further experiments to determine the ooplasmic reaction system. Bruchidius (= Acan- thoscelides) obtectus (Bruchidae, Coleoptera) JURA, Cz. D.Sc. — Zool. Dept., Jagiellonian Univ., ul.Krupnicza 50, KRAKOW, Poland a Early developmental stages. Tetrodontophora bielanensis (Collembola) h Role of egg cortex in embryogenesis (studies with UV micro-beam). Succinea putris (Gastropoda) JURAND, A. Ph.D., — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH EH9 3JN, Scotland, U.K. a Further observations on the mesoblast of developing limb buds. Gallus domesticus (Aves), Mus musculus (Rodentia) h Early changes in developing embryos after hydrocortisone treatment. Gallus domesticus c Developmental changes in the notochord. Mus musculus (Rodentia) d Studies on the formation of various cell organelles during the fission cycle. Paramecium JURGENS, J. D. M.Sc. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLENBOSCH, S.Africa a The nasal capsule and its bearing on the phylogeny. (Amphibia) JUSTUS. J. T. Ph.D. — Springville Labs., Roswell Park Mem. Inst., SPRINGVILLE. N.Y. 14141, U.S.A. JUSZCZYK, W. Dr. — Dept. of Zool., Wyzsza Szkola Pedagogiczna, ul. Podbrzezie 3, KRAK6W. Poland a Influence of starvation on larval development. Rana temporaria, Bufo bufo (Anura), Tciturus vulgaris, T. cristatus (Urodela) KACZANOWSKA (DOBRZAf^SKA). Mrs. J. Dr.es Sci. — Inst, of Zool., Warsaw Univ., Krak. Przedmiescie 26/28, WARSZAWA 64, Poland a Morphogenesis of division and regeneration: 1. the topography of cortical organelles (oral apparatus, contractile vacuole pores, cytoproct, kinetome) 2. site determinations and mor- phogenetic movements during morphogenesis in normal and experimental set of conditions. Chilodonella cucullulus (Ciliata) KACZANOWSKI, A. Dr.es.sci. — Inst, of Zool., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSAWA 64, Poland a Morphology and hypothesis of growth of trophonts. Opalina ranacum. (Opalina, Zooma' stigina) 1. Growth as a function of synthesis of microtubular fibrils 2. Growth abnormalities 87 b Experiments on life cycle and development. Opalina ranarum (Opalina, Zoomastigina) , host: Rana temporaria (Anura) 1. In tadpoles under normal and abnormal conditions of temperature and nutrition 2. Cell differentiation and polyploidy KADASNE, D. K. M.S.. F.R.C.S. — Dept. of Anat., Med. Coll., NAGPUR-3. M.S., India a Differentiation of spinal ganglia in vitro and in vivo. Gallus domesticus (Aves) KAHN, A. J. Ph.D., Prof. — Dept. of Zool., Syracuse Univ.. 130 College Place. SYRACUSE, N.Y. 13210, U.S.A. a Mechanisms in the control of morphogenesis and differentiation. Dictyostelium spec, Polyspondylium spec, Protostelium spec. (Acrasiales). Naegleria griiberi (Amoebina) h Mechanisms in the control of cell movement in amoeboid microorganisms. Dictyostelium spec, Polyspondylium spec, Protostelium spec. (Acrasiales) KAIGHN. M. E. Ph.D. — New York Blood Center. 310 E. 67th St.. NEW YORK. N.Y. 10021. U.S.A. a Developmental changes in plasma protein synthesis in clonally-derived liver cells in vitro as revealed by radioimmunochemical techniques. Raftus rattus (Rodentia), Homo sapiens (Primates) KAITILA. I. — Lab. of Exper. Embryol., Ill Dept. of Pathol., Univ. of Helsinki, Haartmanin- katu 3, HELSINKI 25. Finland a Drug-induced teratogenesis in vitro. Mus musculus (Rodentia) (in collaboration with L. O. SAXfiN and A. LATHI) KAJI. S. D.Sc, Prof. — Dept. of Biol.. Fac of Sci., Konan Univ.. Okamoto. Motoyama-cho. Higashi-nada-ku, KOBE. Japan a Tissue differentiation of the eye disc in the Bar mutant. Drosophila melanogastec (Dipteta) KAJII, T. M.D. — WHO Reference Center, Clin. Univ. de Gynecol, et d'Obstet., 20 rue Alcide Jentzer, 1211 GENEVE 4. Switzerland a Congenital malformations and cytogenetics. Homo sapiens (Primates) b Cytogenetics of aborted fetuses. Homo sapiens (Primates) KAJISHIMA, T. D.Sc — Biol. Inst.. Fac. of Sci.. Nagoya Univ.. Chikusa-ku. NAGOYA. Japan • KAJITA. A. M.D. — Dept. of Biochem.. Nippon Med. School. 1-1-5. Sendagi. Bunkyo-ku, TOKYO. Japan a Genetic control of hemoglobin switch during metamorphosis. Rana catesbeiana (Anura) (in collaboration with K. HAM ADA and R. SHUKUYA) b Change of isozyme patterns during metamorphosis. Rana catesbeiana (Anura) (in col- laboration with R. SHUKUYA) KALANGO. Miss M. I. — Dept. of Anat.. Univ. of Ibadan, IBADAN, Nigeria KALLfiN, A. J. B. M.D., Prof. — Tornblad-Inst. for Comp. Embryol., Biskopsgatan 7, LUND, Sweden • a Overgrowth phenomenon of the brain. Gallus domesticus (Aves) b Epidemiologic studies on teratology. Homo sapiens (Primates) KALMAN. G. Ph.M. — Dept. of Anat.. Univ. Med. School. Kossuth Lajos sug.-ut 40, SZEGED, Hungary a Development of the adrenergic inhibitory terminals in autonomic gangha; fluorescence microscopy and electron microscopy. Mus cattus (Rodentia) (in collaboration with B. CSIL- LIK and Miss E. KNYIHAR) KALTENBACH. Mrs. J. COUFFER Ph.D.. Prof. — Dept. of Biol. Sci.. Clapp Lab.. Mount Holyoke Coll.. SOUTH HADLEY. Mass. 01075. U.S.A. a Local action of thyroxine on metamorphosis: histological and histochemical studies. Rana pipiens (Anura) KALTER, H. Ph.D.. Prof. — Children's Hosp. Res. Found., Div. of Teratol.. Elland and Bethesda Aves.. CINCINNATI. Ohio 45229. U.S.A. KALTHOFF, K. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20. 78 FREIBURG, W.Germany a Embryonic determination. Smittia spec. (Chironomidae, Diptera) KALUZA. J. S. M.D. — Dept. of Neuropathol.. Polish Acad, of Sci.. ul. Botaniczna 3, KRAK6W, Poland KAMAR. G. A. R. Ph.D.. Prof. — Anim. Prod. Dept., Fac. of Agric, Cairo Univ., GIZA. Egypt, U.A.R. a Factors influencing reproduction and production as far as the endocrines and gonads are concerned. (Aves) b Growth and factors affecting especially the endocrines. (Aves) c Factors influencing production and reproduction as far as the environmental conditions arc concerned. (Aves) KAMAT, D. N. Ph.D. — Dept. of Zool.. Shivaji Univ.. Vidyanagar. KOLHAPUR-4, M.S. India a A histochemical (qualitative and quantitative) study of phospholipids and phosphatases in the larval stages. Chrysomia rulifacies (Diptera) (in collaboration with P. S. CHITNIS, Poena) KAMEL. A. Ph.D., Prof. — Dept. of Zool.. Fac. of Sci., Ain Shams Univ.. Abassia. CAIRO. Egypt. U.A.R. KAMEYAMA, Y. M.D.. D.Med.Sc. — The Research Inst, of Environm. Med., Nagoya Univ., Furo-cho. Chikusa-ku, NAGOYA, 464 Japan a Effects of ionizing radiations upon embryos of different species. Mus mn.'^culus, Raftus norvegicus (Rodentia) (in collaboration with U. MURAKAMI, K. HOSHINO and Miss T. NAKAYAMA) b Effects of reduced atmospheric pressures upon the embryo. Mus musculus (Rodentia) c Effects of some chemical substances upon the embryo. Mus musculus. Rattus norvegicus (Rodentia) (in collaboration with K. HOSHINO) d Mechanism responsible for malformations of the extremity in the embryo. Mus musculus, Rattus norvegicus (Rodentia) e Comparative study of the proceeding of development in different strains and species of laboratory animals. Mus musculus, Rattus norvegicus (Rodentia) KANATANI, H. D.Sc, Prof. — Lab. of Physiol., Ocean Research Inst., Univ. of Tokyo, Minamidai 1-15, Nakano-ku, TOKYO, (164) Japan a Mechanism of spawning. Asterias amurensis, Asterina pectinifera (Asteroidea) b Mode of action of 1-methyladenine on oocyte maturation. (Asteroidea) KANAZIR, D. T. M.D., Ph.D., Prof. — Inst, of Nucl. Sci. "Boris Kidrich", BEOGRAD, Yugoslavia KANE R. E. Ph.D., Prof. — Pacific Biomed. Research Center, Univ. of Hawaii, 2538 The Mall, HONOLULU, Hawaii 96822, U.S.A. a Role of cortical granules in formation of hyaline and fertilization membrane. (Echinoder- mata) h Mechanism of cell division, studied by means of the isolated mitotic apparatus. (EchinodeC' mata) KANJI, S. M.Sc. — Dept. of Zool., Presidency Coll., CALCUTTA-12. W.Bengal, India KANKAVA, Mrs. B. Z. Cand.biol.sci. — Dept. of Anim. Embryol., Inst, of Zool., Acad. of Sci. of the Georgian S.S.R., TBILISI, U.S.S.R. KANKI, T. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chomc, Fuka- zawa-machi, Setagaya-ku, TOKYO, 158, Japan a Synthesis of RNA during early development. Anthocidaris spec, Pseudocentrotus spec, Hemicentrotus spec. (Echinoidea) KANOH, Y. D.Sc, Prof. — Akkeshi Marine Biol. Station, Hokkaido Univ., AKKESHI, Hokkaido, Japan • a Electronmicroscope observation of spermatozoa and fertilization process. (Mollusca; Teleostei) KANTOROVA, Mrs. W. I. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R, Vavilov St 26, MOSCOW B-133, U.S.S.R. a Regeneration of cranium bones. Canis familiaris (Carnivora) KAPLAN, N. O. Ph.D., Prof. — Dept. of Biol., Univ. of California. San Diego, P.O. Box 109, LA JOLLA, Calif. 92037, U.S.A. a Action of pyridine nucleotides in development and differentiation KAPLAN, S. Ph.D. — Dept. of Anat. Sci., Coll. of Med., Univ. of Florida, GAINESVILLE, Fla. 32601. U.S.A. a Investigations into the mechanisms underlying congenital malformations; bio-energetics of development and the influence of teratogens thereon. Gallus domesticus (Aves) KARASAKI, S. Ph.D. — Research Labs., Montreal Cane Inst., Notre-Dame Hosp., 1560 Sherbrooke E., MONTREAL 24, Que.. Canada • a Studies on yolk platelets. Xenopus laevis (Anura) KARASAKI, Sh. — Depts. of Microbiol, and Biochem., Med. Center, Univ. of Kentucky, LEXINGTON, Ky. 40506, U.S.A. a Analysis of the physico-chemical properties of DNA in differentiating cells. Tritucus viridescens (Urodela), Gallus domesticus (Aves), Mus musculus, Rattus rattus (Rodentia), Homo sapiens (Primates) (in collaboration with S. P. MODAK) KARB, B. Dr.rer.nat. — Inst, fur Landwirtsch. Zool. und Bienenk. der Univ., Melbweg 5. 53 BONN, W.Germany a Vitamin D-Mangelerscheinungen bei embryonen. Gallus gallus (Aves) KARLIN. Miss D. B.Sc — Dept. of Zool.. Hebrew Univ. of Jerusalem, JERUSALEM, Israel a The ultrastructural changes which occur in blastoderm cells as they differentiate into either epi- or hypoblastic cells. Gallus domesticus (Aves) KARLSSON. B. Fil.Dr. — Zoophysiol. Inst.. Univ. of Lund. Helgonavagen 3. 223 62 LUND. Sweden a Biochemical and immunological studies of stage specific proteins and enzymes of the developing embryo. Sus spec. (Artiodactyla) KASA, P. M.D. — Dept. of Anat., Univ. Med. School, Kossuth Lajos sug.-ut 40, SZEGED, Hungary 89 a Developmental histochemistry of the archicerebellar cortex. Mus caftus (Rodentia) (in collaboration with B. CSILLIK) KASPI (VISHNIVETSKI), Mrs. Th. M.S. — Dept. of Embryol. and TeratoL. Tel-Hashomer Hosp., Tel-Aviv Univ. Med. School. TEL-AVIV, Israel a Behaviour and vital properties of syncytial placenta cells in vitro at term. Homo sapiens (Primates) (in collaboration with L. A. NEBEL) KASSNER, J. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool, Univ. of Wroclaw, ul. Sien- kiewicza 21. WROCLAW. Poland KASYANOV, V. L. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENIN- GRAD B-164, U.S.S.R. a Electrical properties of eggs during maturation and development. Rana temporaria and other spp. (Amphibia) b Effect of centrifugation on egg development. Rana temporaria and other spp. (Amphibia) KATAGIRI. Ch. D.Sc. — Zool. Inst., Fac. of Sci., Hokkaido Univ.. North 10 West 8, SAPPORO, (060) Japan a Fertilization and cleavage. Rana spec, Bufo spec. (Anura) b Characterization and development of hatching enzyme. Rana spec, Bufo spec. (Anura) KATAKURA, Y. D.Sc. — Dept. of Biol., Keio Univ., YOKOHAMA-Hiyoshi, Japan a Development of the sex characters. Armadillidium vulgare (Isopoda, Crustacea) KATASHIMA, R. D.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, HIROSHIMA. Japan a Breeding system. Euplotes spec. (Ciliata) KATO, K.-I. Ph.D. — Biol. Lab., Doshisha Univ., Kamikyo-ku, Karasuma Imadegawa, KYOTO, Japan a Histochemistry of proteins in salivary gland chromosomes in relation to cyto-differentiation and gene activation. Chiconomus dorsalis (Diptera) b Histones in developing embryonic tissues. Triturus pyrrhogaster, Xenopus laevis, (Am- phibia) KATO, M. B.S. — Dept. of Anat., Fac. of Med., Tokyo Med. and Dental Univ.. 1-5-47. Yushima, Bunkyo-ku, TOKYO, 113 Japan a Experimental studies on lens regeneration. Triturus pyrrhogaster, Hynobius nebulosus (Urodela) b Tissue culture studies on the development of the mammary gland. Rattus norvegicus. Homo sapiens (Mammalia) c Collagenogenesis. Rana japonica. Bufo vulgaris, Hynobius nebulosus (Anura), Triturus pyrrhogaster (Urodela) KATOH, A. K. Ph.D. — Dept. of Radiotherapy, Cancer Research Lab.. Mercy Hospital, 1400 Locust St., PITTSBURGH, Pa. 15219, U.S.A. a Differentiation of the embryonic lens in vitro. Callus domesficus (Aues) KAUFFMAN, Miss S. M.D., Prof. — Dept. of Pathol., Downstate Med. Center. State Univ. of New York, 450 Clarkson Ave.. NEW YORK, Brooklyn. N.Y. 11203, U.S.A. a The effects of urethane on embryogenesis of neural tube cells and lung cells. Mus musculus (Rodentia) KAUFMANN, B. P. Ph.D., Prof. (Eraer.) — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104. U.S.A. a Changing patterns of chromosome fine structure and function during development. Droso' phila melanogaster and interspecific hybrids (Drosophilidae, Diptera) KAWAKAMI. I. D.Sc, Prof. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA. 812 Japan • a Disintegration of cells in differentiating tissues. (Amphibia) b Lens fiber differentiation from lens epithel in vitro. Callus domesticus (Aves) c Metabolic changes in nucleic acids and proteins in the primary induction. Triturus pyrrho- gaster, T. ensicouda (Urodela) 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) h Synthesis of amphidiploids. (Ranidae, Anura) c Synthesis of nycleo-cytoplasmic hybrids between different species. (Ranidae, Anura) KAYE, H. Ph.D. — Dept. of Radiobiol., Med. School, Yale Univ., NEW HAVEN, Conn.. U.S.A. KEATING, M. J. B.Sc, M.B. — Dept. of Physiol., Med. School, Univ. of Edinburgh, Teviot Place, EDINBURGH 8, Scotland, U.K. a Development of visual connections. Rana temporaria, Xenopus laevis (Anura) KELLAND, J. L. Ph.D. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont.. Canada KELLAS, L. Ph.D. — Histol. Dept., Fac. of Med., Univ. of Liverpool, LIVERPOOL, Lancashire, England KELLEY, R. O. Ph.D. — Dept. of Anat., School of Med., Univ. of New Mexico, ALBU- QUERQUE, New Mexico 87106. U.S.A. a Electron microscopy of induction systems. Xenopus laevis (Anura) 90 KELLY, W. A. B.Sc. — Dept. of Anat., Med. School, Univ. Walk, BRISTOL 8, England KELSO A F Ph.D. — Dept. of Physiol, and Pharmacol., Chicago Coll. of Osteopathy, 1122 E. 53rd St.. CHICAGO, 111. 60615, U.S.A. a Investigation of oxygen toxicity on development of blood islands and cardiovascular system. Gallus domesticus (Aves) KEMP, N. E. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan. ANN ARBOR, Mich. 48104, U.S.A. . . ® a Electron microscopic analysis of metamorphic changes in the skeleton. Rana pipiens (Anura) h Fine structure of fin rays in regenerating tailfins. Tilapia mossambica, Carassius auratus (Teleostei) KEPHART, Miss J. E. M.S. — Cell Research Inst., B.L. 220, The Univ. of Texas at Austin. AUSTIN, Tex. 78712, U.S.A. a The progressive development and interactions of cellular organelles with differentiation of tissues, together with the modification of this development by various experimental procedures. Zea mays (Gcamineae) KEREKES, M. Chem.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure§ of the Acad, of the S.S.R., Str.Gh.Marinescu 38, TIRGU-MUREs. Rumania KERNIS, M. M. Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Illinois, P.O. Box 6998, CHICAGO. 111. 60680, U.S.A. a Morphological and physiological effects of teratogens with particular emphasis on the effects of these agents on placental function (techniques: in vitro and in vivo uptake of isotopes by embryos, autoradiography, electron microscopy, histochemistry, and measurements of electrical potential differences). Rattus norvegicus (Rodentia) KERR, Miss M. S. Ph.D. — Biol. Div., Oak Ridge Natl. Lab.. P.O. Box Y. OAK RIDGE, Tenn. 37830, U.S.A. a Biochemical studies of lipovitellins in oocytes and hemolymph. Callinectes sapidus (Deca- poda, (Crustacea) h Studies on maturation of hemocytes and their biosynthetic capacities. (Decapoda, Crus- tacea) c Studies on functions of satellite DNA's and macromolecular metabolism in regenerating tissue. Gecarcinus lateralis (Decapoda, Crustacea) (in collaboration with D. M. SKIN- NER and D. E. GRAHAM) KERR, N. S. Ph.D., Prof. — Dept. of Zool.. Coll. of Biol. Sci., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. a The morphogenesis of non-flagellated amoeba to flagellated amoeba, of amoeba to Plas- modia, and of Plasmodia to fruiting bodies. Didymium nigripes (Eumycetozoina) b Developmental genetics. Didymium nigripes (Eumycetozoina) KERR. W. E. Ph.D., Prof. — Dept. de Genet., Fac. de Med. de Ribeirao Preto, Univ. de Sao Paulo, C.P. 301, RIBEIRAO PRETO. S.P., Brazil KERSE. (BUYUKOZER). Mrs. I. Dr., Prof. — Inst, of Histol. and Embryol., Hacettepe Sci. Center. Med. Fac. ANKARA. Turkey a Ultrastructure of fetal membranes. Homo sapiens (Primates) KESSEL, R. G. Ph.D.,, Prof. — Dept. of Zool, Univ. of Iowa, IOWA CITY. Iowa 52240, U.S.A. a Analysis of variations in cell structure and function, especially developmental phenomena (gametogenesis) in a variety of organisms, utilizing techniques of electron microscopy, cytochemistry, radioautography, chromatography, electrophoresis, ultracentrifugation and hydrostatic pressure. KETCHEL, M. M. Ph.D., Prof. — Dept. of Physiol., School of Med., Tufts Univ., 136 Harrison Ave., BOSTON, Mass. 02111, U.S.A. KEYSER. A. J. M. Med.drs. — Dept. of Anat. and Embryol., Univ. of Nijmegen, Geert Grooteplein noord 21, NIJMEGEN. Netherlands a An autoradiographic study of the development of the diencephalon and some basal telencephalic areas (limbic system, rhinencephalon) . Cricetulus barabensis griseus (Rodentia) KHALIL. S. H. M.Sc. — Dept. of Zool, Fac. of Sci., Alexandria Univ.. Moharram Bey. ALEXANDRIA. Egypt. U.A.R. a The development of the urogenital system. Bufo regutatis (Anura) (in collaboration with M. I. MICHAEL and S. N. SEDRA) KHAN, M. S. M.Sc. — Dept. of Zool, Talim-Ul-Islam Coll., RABWAH, Distr. Jhangh. W.Pakistan a Morphogenesis of digestive tract. Bufo melanostictus (Anura) b Development of nervous system. Bufo melanostictus (Anura) c Gastrulation and neurulation. Bufo melanostictus (Anura) d Development of skin. Bufo melanostictus (Anura) KHARE, M. K. D.Phil. — Dept. of Zool, Univ. of Gorakhpur, GORAKHPUR (U.P.), India a Studies on the structure and development of different organs. Philosamia ricini (Lepi- doptera) 91 b Studies on the effect of light, temperature and humidity on development and metamor phosis. Philosamia ricini (Lepidopfera) KHARLOVA. Mrs. G. V. Cand. biol. sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. KIDO, T. D.Sc, Prof. — Biol. Inst., Fac. of Sci., Univ. of Kanazawa, Marunouchi-l, KANAZAWA, Japan a Analysis of mechanism of pharynx-formation. Dugesia japonica (Turbellaria) b Reaggregation of dissociated cells. Callyspongia elongata (Povifera) c Cytological properties of neoblasts. Dugesia japonica (Turbellaria) d Cytological properties of interstitial cells. Hydra vulgaris (Hydroidea) KIEFER. B. I. Ph.D. — Dept. of Biol., Wesleyan Univ., MIDDLETOWN, Conn. 06457. U.S.A. a Genetic control of differentiation and development of male germ cells (electron microscopy, electrophoresis, autoradiography, density gradient centrifugation). Drosophila melanogaster (Diptera) h Structure and function of the mitotic apparatus as compared to other motile systems (electron microscopy, density gradient centrifugation). Strong ylocentrotus purpuratus (Echinoidea) c Regulation of ribosomal RNA and ribosomal protein synthesis during development (density gradient centrifugation, electrophoresis, autoradiography). Drosophila melanogaster (Dip- tera) KIEEBOWNA, Miss L. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool.. Univ. of Wroclaw. ul.Sienkiewicza 21, WROCLAW, Poland a Studies on myogenesis. (Amphibia) KIENY, Mrs. M. A. SENGEL Dr,es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble. Cedex 53, 38-GRENOBLE. France a Ectoderm-mesoderm interaction in the primary induction of the limb bud, in the orientation of the limb bud and in its specific morphogenesis. Gallus domesticus. Anas boschas (Aves) b Regulative mechanisms (competition) in the differentiation of the limb bud skeleton as studied by autoradiographic methods. Gallus domesticus (Aves) c Regional determination of pterylae and apteria. Gallus domesticus (Aves) KIERMAYER, O. Dr.phil. — Inst, fur Entw. physiol., Univ. zu Koln, Gyrhofstr. 17, 5 KOLN- Lindenthal, W.Germany a Experimental studies on the developmental pattern. Micrasterias denttculata (Desmidiaceae) b Comparative studies on the morphogenetic reaction of different varieties, treated with growth regulating substances. Lycopersicon esculentum (Solanaceae) c Electron microscopic studies on the problem of cytomorphogenesis. Micrasterias denticulate (Desmidiaceae) KILARSKI, W. Ph.D. — Dept. of Comp. Anat., Jagellonian Univ., ul.Krupnicza 50. KRA- KCW. Poland a Ultrastructure of yolk. (Holostei) KILLIE, J. W. M.Sc. — Dept. of Obstet. and Gynecol., Div. of Reprod. Biol., Univ. of Virginia Med. School, Box 179, CHARLOTTESVILLE, Va. 22903, U.S.A. a Necessity, function, biochemical characteristics and composition of the mucin coat in the preimplanted embryo. Ocyctolagus cuniculus (Lagomorpha) KIMMEL. D. L. Ph.D.. Prof. — Dept of Anat., Med. Center, West Virginia Univ., MOR- GANTOWN, W.Va. 26506, U.S.A. a Development of the nerve supply to the pharynx, the kidney and the carotid body. Oryctolagus cuniculus (Lagomorpha) , Homo sapiens (Primates) KIMMEL, D. L., Jr. M.D., Ph.D. — Div. of Biol, and Med. Sci., Brown Univ.. PROVI- DENCE, R.I. 02912, U.S.A. a Examination of time and tissue specificity of tryptophan oxygenase and formylase appear- ance during larval development. Drosophila melanogaster (Diptera) h Examination of factors regulating kynurenine deposition in larval fatbody granules. Drosophila melanogaster (Diptera) KIMURA, I. M.Sc. — Dept. of Biophys. and Biochem., Fac. of Sci., Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, TOKYO 113, Japan a Post-fertilization activation of an enzyme which catalyzes thiol-disulfide exchange in eggs. Anthocidaris crassispina, Pseudocentrotus deprcssus, Hemicentrotus pulcherrimus (Echi- noidea) b Comparative studies of microtubule proteins, immunologically and as substrates for the thiol-disulfide exchange reaction. Anthocidaris crassispina, Pseudocentrotus depressus, Hemicentrotus pulcherrimus (Echinoidea) KINCURASHVILI, Mrs. N. I. — Dept. of Anim. Embryol.. Inst, of Zool., Acad, of Set of the Georgian S.S.R., TBILISI. U.S.S.R. KINDAHL. Miss M. E. Ph.D. — Skeppargatan 51 m, 11458 STOCKHOLM, Sweden a The development of the teeth. (Insectivora) 92 KING, Mrs. D. WEI Ph.D.. Prof. — Dept. of Zool.. Natl. Taiwan Univ., TAIPEI. Formosa KING, P. E. Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWANSEA, Glamorganshire, Wales, U.K. KING, T. J. Ph.D., Prof. — Dept. of Biol., Georgetown Univ., 37th 6 O.St. N.W., WASHINGTON. D.C. 20007, U.S.A. • a Studies on nuclear differentiation in embryos. Rana pipiens (Anuca) b Chromosome replication in nuclear transplant embryos. (Amphibia) KINOSHITA, S. Ph.D. — Zool. Inst., Univ. of Tokyo, Hongo 7-3. Bunkyo-ku, TOKYO, (113) Japan a Mechanism of flagellar movement. Hemicentrotus pulchercimus (Echinoidea) b Mechanism of cleavage. Clypeaster japonicus (Echinoidea) c Biochemical analysis of animal and vegetative gradients in the embryo. Pseudocentrotus deprcssus (Echinoidea) KINSELLA, J. E. M.S. — Div. of Food Sci.. Lipids Lab., Pennsylvania State Univ., UNIVERSITY PARK, Pa. 16802. U.S.A. KIORTSIS, V. Dr.es Sci.. Prof. — Zool. Lab. and Museum, Fac. of Sci., Univ. of Athens, Panepistimiopolis (Kouponia), ATHENS (621), Greece • KIRBY, D. R. S. t Ph.D. — Dept. of Zool., Univ. of Oxford, Parks Road, OXFORD OXl 3PF, England (deceased) KIRCHEN, R. V. M.Sc. — Dept. of Cytogenet. and Developm. Biol., Carolina Biol. Supply Co., BURLINGTON, N.C. 27215, U.S.A. a Mitotic activity in early development. Oryzias latipes (Teleostei) KIRK, D. L. Ph.D. — Dept. of Zool., Biol. Sci. Div., Univ. of Chicago, 1101 E. 57th St., CHICAGO, 111. 60637, U.S.A. KIRSTEN, W. H. Prof. — Dept. of Biol.. Div. of Biol. Sci. Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Mechanism of malignant transformation by viruses b Studies of growth control of normal mahgnant cells in vitro. KISCHER, C. WARD Ph.D. — Dept. of Anat., Med. Branch, Univ. of Texas, GAL- VESTON. Tex. 77550. U.S.A. a Biochemical characterization of nuclear histones from embryonic sources b Biochemical ultrastructural studies on organogenesis c Ultrastructural and biochemical analyses of development of skin derivatives. Gallus domes- ticus (Aves). Mus musculus (Rodentia) d Effects of prostaglandins on developing skin and skin derivatives. Gallus domesticus (Aves), Mus musculus (Rodentia) KISHIDA. Y. D.Sc. — Biol. Inst.. Fac. of Sci.. Univ. of Kanazawa, Marunouchi-1, KANAZAWA, Japan a Depigmentation of eye after treatment with thiocarbamide and its derivatives. Dugesia japonica (Turbellaria) b Mechanisms of eye formation during regeneration. Dugesia japonica (Turbellaria) c Reaggregation of dissociated cells. Callyspongia elongata (Porifera) d Ultrastructure of neoblast. Dugesia japonica (Turbellaria) KISIMOTO. R. Dr.Agr. — Dept. of Plant Pathol, and Entomol., Kyushu Natl. Exper. Station, Nishi 496. Izumi, CHIKUGO-shi, Fukuoka-ken, 833 Japan a Wing polymorphism. Nilaparvata lugens, Laodelphax striatella. Sogata furcifera (Araeopi- dae, Homoptera) b Development of viruliferous and non-viruliferous forms of a plant virus vector. Laodelphax striatella (Araeopidae. Homoptera) KISTLER. A. — Div. of Cell Biol, and Chem. Embryol.. Zool. Inst.. Univ. of Bern, Sahlistr. 8, CH-3000 BERN, Switzerland a Comparative biochemistry and ultrastructure of mitochondria in embryonic systems, (in collaboration with R. WEBER) KLEIN, A. O. Ph.D.. Prof. — Biol. Dept., Brandeis Univ., WALTHAM, Mass. 02154, U.S.A. a Light regulated development. Chlamydomonas spec. (Chlorophyceae) . Phaseolus vulgaris (Papilionaceae) KLEIN. N. W. Ph.D.. Prof. — Dept. of Anim. Genet.. Storrs Agric. Exper. Station, Univ. of Connecticut. STORRS. Conn. 06268. U.S.A. a Protein metabolism and its relationship to growth and differentiation in the explanted embryo. Gallus spec. (Aves) h Mechanisms of teratogenic specificity in the explanted embryo. Gallus spec. (Aves) c Growth regulation in the early embryo (culture of embryos on a growth limiting medium; synthesis and break-down of macromolecules in specific regions of the embryo). Gallus spec. (Aves) KLEIN, R. L. Ph.D., Prof. — Dept. of Pharmacol., School of Med., Univ. of Missisippi, JACKSON, Miss. 39216, U.S.A. 93 KLEINEBRECHT, J. Dr.rer.nat. — Inst, fiir Humangenet. und vergl. Erbpathol. der Univ., Paul-Ehrlich-St. 41, 6 FRANKFURT/Main, W.Germany a Histochemistry of mucopolysaccharides in organogenesis of the skeleton; genetically and fluoro-deoxy-cytidine induced malformations. Mus musculus (Rodentia) b Normal and fluoro-deoxy-cytidine induced resorptions. Mtis musculus, Mesocricetus auratus (Rodentia) KLEISS, E. Dr. Med., Prof. — Cat. de Embriol., Fac. de Med., Univ. de Los Andes, MERIDA, Venezuela — personal address: Apartado 38, MfiRIDA, Venezuela KLIMA, M. Dr. — Dept. of Morphol., Inst, of Vertebr. ZooL, Czechoslov. Acad, of Sci., Kvetna, 8, BRNO, Czechoslovakia a Morphogenesis of the sternum and shoulder girdle. (Monotremata; Marsupialia) b Allometric growth of skeleton. (Chiroptera) c Hair morphogenesis and growth. (Chiroptera) KMIEC, B. M.B. — Dept. of Histol. and Embryol., Acad, of Med., ul.Narutowicza 60, tODl, Poland a Comparative histochemical studies on the development of the adrenal medulla. Xenopus laevis, Rana esculenfa (Anura). Rattus norvegicus, Cavia cobaya (Rodentia), Homo sapiens (Primates) KNESE, K.-H. Dr.med., Dr.phil., Prof. — Inst, fiir Histol. und Embryol., Univ. Hohenheim (LH), Fruwirthstr. 16, 7000 STUTTGART-Hohenheim, Western Germany a Histochemical, enzymological, and electronmicroscopical investigations of the early his- togenesis of the connective and supporting tissue of the presumptive regions of different kinds of mesenchyme, especially of cartilage and bone, and those in lung and kidney. Gallus domesticus (Aves), Bos bovinus (Artiodactyla), Rattus norvegicus, Mus musculus (Rodentia), Homo sapiens (Primates) h Morphological, enzymological and electronmicroscopical investigations of histogenesis especially of cartilage and bone as well as metamorphosis after hormone application. Rattus norvegicus (Rodentia), Bos bovinus (Artiodactyla) c Developmental morphology of embryo. Bos bovinus (Artiodactyla) KNIGHT-JONES, E. W. D.Phil., Prof. — Dept. of ZooL, Univ. Coll. of Swansea, Singleton Park. SWANSEA, Glamorganshire, Wales, U.K. KNIZETOVA (VEJP), F. Ph.D. — Dept. of Zool., Fac. of Sci., Univ. of Alberta, ED- MONTON, Alta., Canada a Immunogenetic analysis of graft-versus-host reaction in embryos using the splenomegaly assay. Callus domesticus (Aves) b Development of lymphoid system; effect of irradiation on immunological processes. Callus domesticus (Aves) KNJAZEVA, Miss R. A. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5. LENINGRAD B-164, U.S.S.R. a Polyembryony (somatic embryogenesis). Callus domesticus. Anas platyrhynchos, Meleagcis gallopavo (Aves) KNOWLES, Sir G. W. Ph.D.. Prof. — Dept. of Anat., King's Coll., Univ. of London, Strand, LONDON, England KNOX, W. E. M.D. — Dept. of Biol. Chem., Cane. Research Inst., New England Deaconess Hosp.. 185 Pilgrim Rd., BOSTON, Mass. 02215, U.S.A. a Biochemistry of development. Callus domesticus (Aves), Rattus norvegicus (Rodentia) KNUDSEN, P. A. M.D., D.D.S., Prof. — Dept. of Anat., Royal Dental Coll., AARHUS, Denmark a Congenital malformations of jaws, oral cavity and nervous system induced by hyper- vitaminosis A and trypan blue. Mus musculus, Rattus norvegicus (Rodentia) h Malformations of the vascular system of brain and head. Mus musculus. Rattus norvegicus (Rodentia) (in collaboration with J. BUGGE) KNYIHAR, Miss E. M.D. — Dept. of Anat., Univ. Med. School. Kossuth Lajos sug.-ut 40, SZEGED, Hungary a Development of the adrenergic inhibitory terminals in autonomic ganglia: fluorescence microscopy and electron microscopy. Mus rattus (Rodentia) (in collaboration with B. CSIL- LIK and G. KALMAN) b Developmental histochemistry and electron microscopy of the vegetative ground plexus. Mus Rattus (Rodentia) (in collaboration with B. CSILLIK) KOBAYASHI, N. Ph.D. — Biol. Lab., Doshisha Univ., Kamikyo-ku, Karasuma Imadegawa. KYOTO. Japan a Reproductive physiology, especially histochemistry of oogenesis. (Echinoidea) KOBAYASI, H. Dr., Prof. — Biol. Lab., Japan Women's Univ., Mejirodai 2, 8, Bunkyo-ku, TOKYO, Japan KOCH, P. Ph.D. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn, W. Germany a Separation and characterization of yolk proteins. Carausius morosus (Cheleutoptera), Acheta domesticus (Orthoptera) 94 b Comparison of egg and haemolymph proteins. (Irisecta) KOCHAR, N. K. M.Sc. — Dept. of Anat., Univ. of Liverpool. LIVERPOOL 3, England a The effect of X-irradiation on spermatogenesis. (Mammalia) KOCHAV, Sh. M.Sc. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERUSALEM, Israel a The differentiation potencies of the blastoderm prior to laying. Gallus domesticus (Aves) KOCHER-BECKER, Mrs. U. Dr.rer.nat. — Heiligenberg Inst., 7799 HEILIGENBERG, Baden, W.Germany • a Determination of undetermined ectoderm in solutions of inducing substances. Triturus alpestris (Urodela) b Effects and mechanisms of the mesodermal inducing factor. Triturus alpestris, Ambystoma mexicanum (Urodela) KOCHER, W. Dr. phil. — Zool. Inst, der Univ. Wiirzburg, und Heiligenberg Inst., 7799 HEILIGENBERG, Baden, W.Germany • a Patterns of effects of alkylating substances (especially of triethylenernelamine, TEM) and their treatment-phase specifity during early development and organogenesis. Gallus domes- ticus (Aves) b Pattern formation in selection-lines of the Polydactyly mutant. Mus musculus (Rodentia) c Phenocopy of the gene effects of Polydactyly by means of TEM-treatment. Mus musculus (Rodentia) d Interactions between the gene polydactyla and the teratogenic effects of TEM. Mus mus- culus (Rodentia) KOCHERT, G. Ph.D. — Dept. of Botany, Univ. of Georgia, ATHENS, Ga. 30601. U.S.A. a Sexual induction. Volvox carted (Chlorophyceae) b RNA metabolism in development. Volvox carted (Chlorophyceae) KOCHHAR, D. M. Ph.D. — Depts. of Anat. and Oral Biol., Coll. of Med. and Dent., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Teratogenic response of embryos to some specific amino acid analogues in vivo, and in whole embryo cultures. Mus musculus (Rodentia) b Morphological and biochemical changes in limb buds of normal embryos and embryos in which phocomelia has been induced by experimental means. Mus musculus (Rodentia) KOCHVA, E. Ph.D., Prof. — Dept. of Zool., Tel-Aviv Univ., 155 Herzl St., TEL- AVIV, Israel a Development of glands; synthesis and transport of enzymes and other secretory products. (Ophidia, Reptilia) KOCOVA (PECHACKOVA), Mrs. J. Dr.med. — Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., Karlovarska 48, PLZE5J, Czechoslovakia a The development of the venous system. ( Amniota) KOECKE, H.-U. Ph.D., Prof. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/ Lahn, W.Germany a Determination von Neuralleistenzellen und Derivaten. Anas domestica (Aves) h Entwicklungsphysiologie der Feder und embryonale Pterylose. Anas spec, Columba spec, Gallus domesticus (Aves) c Neuralleistenentwicklung und Pigmentierung. Anas spec. (Aves) d Identifizierung von Melanoblasten und Melaningenese. Anas domesticus (Aves) e Anlage und Gefassversorgung der Epithelkorper (Parathyreoidea). Salamandra maculosa (Urodela) KOHONEN, P. J. Ph.D. — Lab. of Exper. Embryol.. Dept. of Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland a Nucleic acid synthesis in induced ectoderm. Triturus spec. (Urodela) (in collaboration with S. I. TOIVONEN) KOJIMA. M. K. D.Sc. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, Mie-ken, (517) Japan • a Physiological studies on the cleavage of eggs. Hemicentrotus pulcherrimus, Pseudocentrofus depressus (Echinoidea) KOLLAR, E. J. Ph.D. — Dept. of Anat., Div. of Biol. Sci., Univ. of Chicago, 1025 E. 57th St., CHICAGO, 111. 60637, U.S.A. a Differentiation of skin derivatives with special reference to teeth, vibrissae. and feathers; combinations of epithelial and mesodermal tissues are used to determine: the roles of these tissues, the inductive sequence, and the temporal and spatial stability and plasticity of the integument during early stages. Gallus domesticus (Aves), Mus musculus (Rodentia) h Suppression and stimulation of neural crest and integumental differentiation by: Beta-2- thienylalanine, nerve growth factor, and anti-nerve growth factor. Gallus domesticus (Aves), Mus musculus (Rodentia) KOLLROS. J. J. Ph.D., Prof. — Dept. of Zool.. Univ. of Iowa. IOWA CITY. Iowa 52240. U.S.A. a Influence of thyroid hormones upon limb regeneration in tadpoles. Bufo americanus, Pseu- dacris nigrita, Rana pipiens (Anura) h Tissue responses and control of sequence in metamorphosis. Rana pipiens, R. catesbeiana, Pseudacris nigrita, Ambystoma jeifersonianum (Amphibia) 95 c Development of spinal and cerebral centers. Rana pipiens, R. catesbeiana, Pseudacris nigrita, Bufo americanus (Anuca) d Delineation of skin territories of different developmental capacities, especially as indicated by gland development. Rana pipiens and other spp. (Anura) KOMINKOVA, Miss E. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Submicroscopic structure and cytochemistry of Hofbauer cells. Mus rattus (Rodentia), Felis domestica (Carnivora), Homo sapiens (Primates) b Histogenesis of the connective tissue cells of chorionic villi. Homo sapi/ens (Primates) KONDO, K. B.Sc. — Dept. of Biophys. and Biochem., Fac. of Sci.. Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, TOKYO 113, Japan a Reaggregation of dissociated embryonic cells, especially the search for cell-reaggregating substances as known in Porifera. (Echinoidea), Tritums pyrrhogaster (Urodela) h Adhesiveness of cells: 1. mechanism of adhesion. 2. changes in adhesiveness accompanying development and their significance. (Echinoidea). Triturus pyrrhogaster (Urodela) KONIGSBERG, I. R. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHAR- LOTTESVILLE, Va. 22903, U.S.A. a Cytodifferentiation of skeletal muscle in clonal cell culture. Gallus domesticus (Aves) h Dependent differentiation of muscle cells upon products of fibroblast biosynthesis. Gallus domesticus (Aves) KONIJN, Th. M. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1. Uni- versiteitscentrum "De Uithof", UTRECHT, Netherlands a Chemotaxis, cell aggregation and differentiation. (Acrasiales) h Adenosine-3',5'-monophosphate and other cyclic nucleotides during morphogenesis in lower and higher organisms KONYSHEV, V. A. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. a Tissue growth promoting and inhibiting substances: isolation, chemical characterization, action on tissues and relation of chemical nature to action mechanism. Gallus domesticus (Aves) KONYUKHOV, B. V. Dr.biol.Sci. — Phenogenet. Lab., Inst, of Gen. Genet., Acad, of Sci. of the U.S.S.R., Profsojuznay St. 7 (1), MOSCOW B-133, U.S.S.R. a Developmental study of mutational effects of genes which lead to eye and skeletal ab- normalities. Mus musculus (Rodentia) h Study of lens proteins by electrophoresis. Mus musculus (Rodentia) c Study of mechanisms of eye and skeletal abnormalities by organ culture. Mus musculus (Rodentia) d Methods for the prevention of some inherited abnormalities by administering drugs. Mus musculus (Rodentia) KORKIA (NIJARADZE), Mrs. I. K. Cand.biol.sci. — Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of the Georgian S.S.R.. TBILISI, U.S.S.R. KORN, H. F. Dr.rer.nat. — I. Zool. Inst., Naturw. Fak., Friedrich-Alexander Univ., Univer- sitatsstr. 19, 852 ERLANGEN, W.Germany a Development. (Nemathelminthes) b The postlarval brain. (Polychaeta) KORNELIUSSEN, H. K. — Anat. Inst., Univ. of Oslo, Karl Johansgt. 47, OSLO, Norway KORNGUTH, S. E. Ph.D., Prof. — Depts. of Neurol, and Physiol. Chem., Coll. of Med.. Univ. of Wisconsin, MADISON, Wis. 53706, U.S.A. a Changes in histone distribution during the development of the nervous system. (Vertebrata) b Proteins of the synaptic complex and development of synaptic contacts in nervous tissue. ( Vertebrata) KOROTCHKIN, L. I. Dr.med. sci.. Prof. — Inst, of Cytol. and Genet., NOVOSIBIRSK 90, U.S.S.R. a Experimental morphology, cytochemistry and cytophysiology of the developing nervous system. Ambystoma mexicanum (Urodela). Rattus norvegicus. Mus musculus (Rodentia) h Development of the pigment cell. Ambystoma mexicanum (Urodela). Rattus norvegicus, Mus musculus (Rodentia) KOROTKOVA, Mrs. G. P. Cand.biol.sci. — Dept. of Embryol., Leningrad Univ.. Mende- leevsky St. 5, LENINGRAD B-164. U.S.S.R. a Comparative study of the processes of regeneration, asexual reproduction and somatic embryogenesis. Leucosolenia complicata, Sycon lingua, Halichondria panicea and other spp. (Porifera) KOSCIELSKI, B. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool.. Univ. of Wroclaw, ul. Sienkiewicza 21, WROCK-AW, Poland a Polyembryony. Dendrocoelium spec. (Turbellaria) KOSHIDA, Y. D.Sc. — Dept. of Biol., Coll. of Gen. Educ, Osaka Univ., Toyonaka. OSAKA, 560 Japan a Cytological studies on the presence of recognizable sex-associated differences. Gallus do- mesticus. Cofurnix coturnix japonica, Meleagris gallopavo (Aves) 96 b Histochemical studies on developing photoreceptors. Lymnaea spec, Euhadra spec, Limax spec. (Pulmonata) . Monodonta spec, Conomurex spec, Littorina spec (Prosobranchia, Gastropoda), Pecfen spec, Chlamys spec. (Lamellibranchia) , Octopus spec. (Octopoda), Sepia spec. (Decapoda, Cephalopoda) KOSIN. I. L. Ph.D., Prof. — Lab. of Developm. Biol, Dept. of Anim. Sci., Washington State Univ., PULLMAN, Wash. 99163, U.S.A. KOSKIMIES, O. J. M.D. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland a Virus-induced abnormalities in embryonic development. Homo sapiens (Primates) (in col- laboration with L. O. SAXfiN, Dept. of Pathol.) KOSTELLOW, Miss A. B. Ph.D. — Dept. of Physiol., Albert Einstein Coll. of Med., Yeshiva Univ., 1300 Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. a Enzyme induction in the embryo; the conditions controlling the synthesis of tissue specific enzymes from competive pathways of tryptophan metabolism leading to the production of kynurenine or serotonin are being studied in dissociated late blastula and early gastrula cells. Rana pipiens (Anuca) h The ionic events that occur during blastula formation which are associated with morpho- genesis and cell differentiation: the transport of cytoplasmic Na+ into the blastocoel. 1. Mapping the changing electric fields at the surface of the developing embryo and cor- relating these fields with known patterns of cell migrations. 2. Monitoring the rate of Na+ release in each of the germ layers. 3. Assaying for vasopressin-like hormone activity in blastula extracts. Rana pipiens (Anura) KOSTOMAROVA, Mrs. A. A. Cand.biol.sci. — Lab. of Biochem. Embryol., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. KOTANI, M. M.Sc — Lab. of Embryol., Fac of Sci., Osaka City Univ., Sugimoto-cho, Sumiyoshi-ku, OSAKA, Japan a Nature of germinal cytoplasm. Xenopus laevis (Anura) KOZIK, M. M.D. — Dept. of Neurol., Med. Acad., Przybyszewskiego St. 49, POZNAl^l, Poland a Histochemistry of glia cells in the developing nervous system. b Histochemical mapping of the developing brain. KRAICER, P. F. Ph.D., Prof. — Dept. of Zool., Tel-Aviv Univ., 155 Herzl St., TEL- AVIV, Israel a Changes in the follicular oocyte preceding ovulation. Rattus norvegicus (Rodentia) b Composition of follicular fluid. Homo sapiens (Primates) KRAL, B. RNDr. — Dept. of Morphol., Inst, of Vertebr. Zool., Czechoslov. Acad, of Sci., Kvetna, 8, BRNO, Czechoslovakia a Comparative studies of chromosomes. (Lacectilia; Rodentia; Insectivora: Chiroptera) KRAMER, J. P. Ph.D., Prof. — Dept. of Entomol. and Limnol., Cornell Univ., 10 Comstock Hall, ITHACA, N.Y. 14850, U.S.A. a Morphological development of entomophilic forms. Octosporea muscaedomesticae (Micro- sporidia, Sporozoa) b Pathogenesis of octosporeosis. Phormia regina. Musca domestica (Diptera) KRANTZ, Mrs. H. Dr.med. — Anat. Inst, der Univ. Rostock, Gertrudenstr. 9, 25 ROSTOCK 1. East Germany a Einfluss des Alters einer Kultur auf die Zellkerngrosse b Der Zellkern im Organismus und im Explantat. c Development of the Hortega-cells KRATOCHWIL, K. Dr.phil. — Inst, fiir Krebsforsch., Univ. Wien, Borschkegasse 8a, Post- fach 72, A-1090 WIEN, Austria a Organ-specificity in mesenchymal induction. Mus musculus (Rodentia) b Endocrine control of development. Mus musculus (Rodentia) c Mammary gland development. Mus musculus (Rodentia) KRAUS, Miss C. Dr.phil. — Hirnanat. Inst, der Psychiatr. Univ. Klinik Bern, 3072 OSTER- MUNDIGEN-BE, Switzerland a Ontogenesis of the brain. (Cetacea) KRAUS, R. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Differentiation and role of prechordal plate in early development of cephalic region (sub- microscopic and cytochemical studies in normal and experimental conditions). Gallus domesticus (Aves), Mus rattus (Rodentia), Homo sapiens (Primates) h Differentiation of the chemoreceptor cell (comparative studies on the submicroscopic structure, enzyme histochemistry). (Rodentia; Carnivora), Homo sapiens (Primates) KRAUSE, G. Dr.phil., Prof. — Zool. Inst, der Univ., Rontgenring 10, 87 WORZBURG, W.Germany — Heiligenberg Inst., 7799 HEILIGENBERG, Baden, W.Germany • a Experimentell erzeugte duplicitas cruciata. Tachycines asynamorus (Octhoptera) b Analyse der Keimanlagenbildung. Bombyx mod (Lepidoptera) 97 c Vergleichende Embryonalentwicklung. (Insecta) d Kultur embryonaler Gewebe. (Insecta) KREDIET, P. M.V.D. — Dept. of Anat. and Embryol., Med. Fac. Rotterdam, William Boothlaan 18, ROTTERDAM-2 -038, Netherlands a Ontogenetic malformations of the heart and great vessels in neonates and adults. Homo sapiens (Primates) and other mammals b Development of the heart and great vessels. (Aves), Homo sapiens (Primates) and other mammals c Experimental malformations and regeneration of blood vessels. (Aves), Homo sapiens (Primates) and other mammals KREJSA, R. J. Ph.D. — Biol. Sci. Dept., Calif. State Polytechn. Coll., SAN LUIS OBISPO, Calif. 93401, U.S.A. a Development and mineralization of scales; role of the epidermis in scale development; light and electron microscopy of developing skin. Poecilia reticulata, Oryzias latipes, Salvelinus fontinalis (Teleostei) (in collaboration with Miss S. A. LUSE) b Inductive interactions between epidermis and dermis: comparative aspects of integument morphogenesis. (Invertebrata, Vertebrata) KRETCHMER, N. Ph.D., M.D., Prof. — Dept. of Pediat., School of Med., Stanford Univ.. 300 Pasteur Drive, PALO ALTO, Calif. 94304, U.S.A. a Developmental enzymology: 1. disaccharidases in developing intestine; 2. pyrimidine bio- synthesis in the fetal heart. Rattus norvegicus (Rodentia), Zalophus calilornianus (Phoci- dae, Carnivora) KRITCHINSKAYA, Miss E. B. Cand.biol.sci. — Dept. of Embryol., Leningrad Univ., LE- NINGRAD B-164, U.S.S.R. a Asexual reproduction, regeneration and somatic embryogenesis. Dugesia tigrina (Turbel- laria) KROEGER, H. Dr.rer.nat., Prof. — Inst, fiir Genet., Univ. des Saarlandes, 66 SAAR- BRUCKEN 11. W.Germany a Puffing patterns in giant chromosomes and the mechanism by which they are evoked and controlled. Chironomus thummi, Ch. tentans (Diptera) h Embryology and genetics of pattern formation. Drosophila melanogaster (Diptera) KROHN, P. L. B.M., B.Ch., Prof. (Emer.) — La Foret, St. Mary, JERSEY, Channel Islands, U.K. KRONE, H. A. Dr.med., Prof. — Staatl. Frauenklinik und Hebammenschule, Markusplatz 3. 86 BAMBERG, W.Germany KRZANOWSKA (DATKOWNA). Mrs. H. Ph.D. — Dept. of Anim. Genet, and Org. Evol.. Jagellonian Univ., Krupnicza 50, KRAKOW 2, Poland a Studies of heterosis: sperm characters, fertilization and cleavage rate in inbred and cross- bred animals. Mas musculus (Rodentia) KRZYSZTOFOWICZ, Miss A. D.Sc. — Zool. Dept., Jagellonian Univ., ul.Krupnicza 50, KRAK6W, Poland a Spermatogenesis. (CoUembola) h Embryonic development. Tetranychus urticae (Acarina) KUBLI, E. cand.phil. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kiinstlergasse 16, CH-8006 ZURICH, Switzerland a Nucleic acids of various mutants. Drosophila melanogaster (Diptera) KUBOTA, K. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria KUBOTA, T. D.Sc, Prof. — Biol. Lab., Liberal Arts Coll., Kagoshima Univ., Kamoike-cho. KAGOSHIMA-shi, 890 Japan a Studies of cleavage. Cynops (— Triturus) pyrrhogaster (Urodela) 1. Mechanism of determining furrow positions and furrow advance at animal, equatorial and vegetal regions 2. Direction of cleaving force and site of origin KUCIAS, J. Ph.D. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19, Rokitnica. ZABRZE 8, Poland a Entropy in cell differentiation; determination of the oxygen consumption in vivo. Ambystoma tigrinum (Urodela) , Xenopus laevis (Anura), (Rodentia) KUDOKOTSEV, V. P. B.Sc. — Dept. of Biol., Kharkov State Univ., Dzerjinsky Square 4, KHARKOV, U.S.S.R. a Experimental investigations in limb regeneration. (Vertebrata) KUHN, A. t Dr.rer.nat., Prof. — Max Planck Inst, fiir Biol., Abt. Beermann, Spemannstr. 34, 74 TUBINGEN, W.Germany (deceased) KUHN, O. Dr.rer.nat., Prof. (Emer.) — Zool. Inst, der Univ., Weyertal 119, 5 KOLN- Lindenthal, W.Germany a Hormonwirkungen in der Morphogenese b Entwicklungsphysiologie der Feder. (Aves) c Wirkungsweise carcinogener und anderer Substanzen auf tierische Gewebe d Regeneration und Wundheilung 98 KUIJEN, C J. van M.Sc. — Zool. Lab.. Univ. of Leiden, Kaiserstr. 63, LEIDEN, Nether- lands a Functional aspects of development of the vascular system. Rana temporaria (Anura) KULANGARA. A. C. Ph.D., Prof, — Dept. of Anat., Woman's Med. Coll., 3300 Henry Ave., PHILADELPHIA, Pa. 19129, U.S.A. a An investigation of the genetic and antigenic differences among spermatozoa, using im- munological techniques. Lepus spp. ( Lagomorpha) b Seminal antigens (spermatozoa and plasma) from three breeds. Ovis acies (Artiodactyla) c Seminal antigens. Homo sapiens (Primates) d Passage of homologous and heterologous proteins from the mother into the early conceptus. Lepus spp. (Lagomorpha) KUNZ, W. — Zool. Inst, der Westf. Wilhelms-Univ., Badestr. 9, 44 MQNSTER/Westf., W.Germany a Nuclear structure (lampbrush chromosomes, multiple nucleoli and extra DNA) of the germinal vesicle in the panoistic ovary. Gryllus domesticus (Orthoptera) h Uptake of haemolymph proteins in the oocyte and its deposition in the yolk platelets. Gryllus domesticus, Locusta migratoria (Orthoptera) KUNZ (RAMSAY), Mrs. Y. W. Dr.phil. — Zool. Dept., Univ. Coll. Belfield, Stillorgan Road, DUBLIN 4, Ireland a Development of lactate dehydrogenase isoenzyme pattern from fertilized egg through metamorphosis. (Zone electrophoresis in starch gel and agar gel.) Xenopus laevis (Anura) b Development of lactate dehydrogenase isoenzyme patterns during embryonic and post- embryonic period; comparison of species and hybrid offspring. (Starch gel and agar gel electrophoresis.) Salmo trutto forma fario, S. salar and hybrids (Salmonidae, Teleostei) KURAHASHI, K. — Biol. Lab., Osaka Dental Coll., Saka, HIRAKATA, Osaka Pref., Japan KURIHARA, M. — Inst, of Appl. Entomol., Fac. of Agric, Iwata Univ., Ueda 3-18, MO- RIOKA, Japan KURU, M. M.D. — Natl. Cancer Centre Hosp., Tsukiji 5 chome, Chuoku, TOKYO, Japan KURULASHVILI, Mrs. L. I. — Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of the Georgian S.S.R., TBILISI, U.S.S.R. KUTHE, H. W. Dr.rernat. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN-Lindenthal, W.Germany a Determination problems in early development; changes of protein pattern in the yolk system. Dermestes frischi (Coleoptera) KUUSI, Miss T. K. Ph.D. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland • (no embryological work in progress) KVINIKHIDZE (CICISHVILI), Mrs. G. S. — Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of the Georgian S.S.R., Chavchavadze St. 31, TBILISI, U.S.S.R. KVINNSLAND, S. — Inst, of Anat., Univ. of Bergen, BERGEN, Aarstadvollen, Norway a The profile of the foetal face, an anthropological and roentgen anatomical study of the foetal face and cranial base in their sagittal growth processes. Homo sapiens (Primates) h Early spread of ossification of the upper and lower jaws. Homo sapiens (Primates) KVIST, T. N. B.Sc. — Dept. of Biol., Univ. of Pennsylvania. PHILADELPHIA, Pa. 19104, U.S.A. KYONO (NAKAGAWA), Mrs. H. M.A. — Embryol. Sect., Biol. Dept., Tokyo Metropol- itan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan a Localization of ATP-ase and protein-bound-SH in the ova. Hemicentrotus pulcherrimus (Echinoidea) h Analysis of myotube formation in cultured embryonic cells. Gallus domesticus (Aves) LAALE. H. W. Ph.D. — Dept. of Zool.. Univ. of Manitoba. WINNIPEG, 19, Manitoba, Canada a Immuno-embryology; protein patterns in development. Brachydanio rerio (Teleostei) h Inductive and inhibitory phenomena in ontogeny; regulatory mechanisms; growth sub- stances. Brachydanio rerio (Teleostei) LAANE, H. M. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTER- DAM-O., Netherlands a Light-microscopical, electron-microscopical, histochemical, physiological and experimental teratogenetic studies of heart development in the embryo. Gallus domesticus (Aves) (in collaboration with J. DRUKKER, F. J. BIESENBEEK and J. A. LOS) LAAT. S. W. de M.Sc. — Hubrecht Lab. (Internat. Embryol. Inst.). Uppsalalaan 1, Uni- versiteitscentrum "De Uithof", UTRECHT, Netherlands a Electrophysiological aspects of early development, Xenopus laevis (Anura), Ambystoma mexicanum (Urodela) (in collaboration with P. D. NIEUWKOOP) LABORDUS, V. M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT, Netherlands a The effect of UV-light on cleavage and morphogenesis. Limnaea stagnalis (Gastropoda) LABOUR, G. R. — Lab. de Zool., Fac. des Sci., Univ. de Paris, 91 ORSAY, France 99 a Cytological study of diapausing embryos, with special reference to cell ultrastructure. Locusta migratoria gallica (Accididae, Orthopfera) b Cytological study of development of fat body, with special reference to cell ultrastructure and cytochemistry. Leptinotarsa decemlineata (Coleoptera) LaCHANCE, L. E. Ph.D. — Metabol. and Radiat. Research Lab., State Univ. Station, FARGO, N.D. 58103, U.S.A. — temporarily: FAO/IAEA Div. of Atom. Energy in Agric, Internat. Atom. Energy Agency, Karntner Ring 11, A- 1010 VIENNA 1, Austria LACROIX, J. C. — Lab. d'Embryol., Fac. des Sci., 9 quai St. Bernard, 75 PARIS Ve, France • LA CROIX, L. J. Ph.D., Prof. — Dept. of Plant Sci., Fac. of Agric, Univ. of Manitoba, WINNIPEG 19, Manitoba, Canada a Factors affecting embryonic growth and differentiation. Hordeum vulgare (Graminaeae) LACY, D. Dr. — Dept. of Zool. and Comp. Anat., St. Bartholomew's Med. Coll., Charter- house Square, LONDON E.C.I, England LAGUCHEV, S. S. Dr.med.sci. — Lab. of Histophysiol., Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. a The hormonal regulation of mitotic activity and synthesis of DNA. Mus musculus, Rattus norvegicus (Rodenfia) LAHIRI, D. M.Sc. — Dept. of Zool.. Presidency Coll., CALCUTTA-12, W.Bengal, India LAHTI, A. — Lab. of Exper. Embryol., Ill Dept. of Pathol., Univ. of Helsinki, Haartmanin- katu 3, HELSINKI 25, Finland a Drug-induced teratogenesis in vitro. Mus musculus (Rodentia) (in collaboration with L. O. SAXEN and I. KAITILA) LAI-FOOK, Miss J. E. I. Ph.D. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont., Canada a The fine structure of development. (Insecta) LAIRD, C. D. Ph.D. — Dept. of Zool., Univ. of Texas at Austin, AUSTIN, Tex. 78712, U.S.A. a Relationship between developmental patterns and intragenome nucleotide sequence homology. (Insecta), (Tunicata) , (Mammalia) b Developmental genetics of linked genes; fractionation of RNA to correlate gene expression with karyotype arrangement. Drosophila melanogaster (Diptera) LAKSHMANAN, K. K. Ph.D., Prof. — Dept. of Botany, Pachaiyappa's College, MADRAS- 30, India a Descriptive and experimental embryology. (Plantae) b Embryogenesis. ( Angiospermae) c Study of irregular embryogenesis and its possible correlation with embryo differentiation in tissue culture. (Angiospermae) LAKSHMI, Miss M. S. Ph.D. — Chester Beatty Research Inst., Inst, of Cane. Research, Royal Cane. Hosp., Fulham Rd., LONDON S.W.3, England a Morphogenetic effects of follicle-stimulating hormone. Callus domesticus (Aves) (in col- laboration with G. V. SHERBET) b Behaviour of neoplastic cells transplanted into embryos. Gallus domesticus (Aves) (in collaboration with G. V. SHERBET) LAL, D. M. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLAHABAD-2, India a Quantitative studies of various metabohtes in eggs, e.g. nitrogenous compounds, phos- phorus compounds, reducing substances and citric acid. Philosamia ricini (Lepidoptera), Musca domestica. Saccophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT and R. VARMA) b Variation in the activity of some enzymes in eggs. Philosamia ricini (Lepfidoptera), Musca domestica. Sarcophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT and R. VARMA) c Quantitative studies of various metabolites during metamorphosis. Philosamia ricini (Lepi- doptera), Musca nebulo, Sarcophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT, Miss I. D. MORRIS and R. VARMA) d Quantitative studies of certain metabolites and enzymic studies on the fat body during larval and pupal development. Philosamia ricini (Lepidoptera) (in collaboration with Mrs. R. PANT, Miss I. D. MORRIS and R. VARMA) LALLIER, R. A. Dr.Sc. — Station Zoologique, Fac. des Sci. de Paris, 06 VILLEFRAN- CHE-sur-Mer, France • a Biochemical aspects of embryonic determination (studies of animalizing and vegetalizing agents). Paracentrotus lividus (Echinoidea) LAMBIOTTE, M. G. D. Dr.es Sci. — Centre de Rech. sur la Nutrit. du C.N.R.S., 9 rue Emile, 92 BELLEVUE, France LAMONT, Miss D. M. M.A. — Dept. of Chem., Univ. Coll. London, Gower St., LONDON W.C.I, England LAMPEL. G. Dr.rer.nat., Prof. — Zool. Inst., Naturw. Fak., Univ. Freiburg, CH-1700 FREIBURG, Switzerland 100 ] a Researches on the sequence of morphs in cyclic reproduction. Pemphigus spirofhecae (Homoptera) LANDAUER. W. Ph.D.. Prof. — Dept. of Anim. Genet.. Univ. Coll. London. Wolfson House. 4 Stephenson Way. LONDON N.W.I. England — private address: 16 Highgate Ave.. LONDON N.6. England • a A causal analysis of teratogenic action of insulin and other chemical compounds on devel- oping embryos. Gallus domesticus (Aves) b The nature and significance of phenocopies. Gallus domesticus (Aves) LANDESMAN. R. Ph.D. — Dept. of Zool.. Univ. of Vermont. BURLINGTON. Vt. 05401. U.S.A. a Control of transcription and translation during embryogenesis. Xenopus laevis (Anuca) h Examination of regional differentiation by analysis of protein synthesis. Xenopus laevis (Anura), Amby stoma mexicanum (Urodela) LANDSTROM. U. — Dept. of Zoophysiol.. Univ. of Umea. S 901 87 UMEA. Sweden a Oxygen uptake during embryogenesis. Tubifex spp. (Oligochaeta) (in collaboration with S. L0VTRUP) LANGMAN, J. M.D.. Ph.D.. Prof. — Dept. of Anat., Med. School. Univ. of Virginia, CHARLOTTESVILLE. Va. 22901. U.S.A. • a Autoradiographic and immunological analysis of muscle development in vivo. Gallus domesticus (Aves) h Autoradiographic and immunological analysis of brain development under normal and abnormal conditions. Gallus domesticus (Aves), (Rodentia) LANOT. R. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Nancy. 30 rue Ste Catherine. 54 NANCY. France a Malformations axiales: analyse causale de Taction teratogene du bleu trypan et de la RNA-se. Gallus gallus (Aves) LANZAVECCHIA. G. Dr.. Prof. — 1st. di Zool.. Univ. di Milano, Via Celoria 10, MI- LANO, Italy LARKIN, L. H. Ph.D. — Dept. of Anat., Univ. of Colorado Med. School, 4200 E. 9th Ave., DENVER, Colo. 80220, U.S.A. LARRIVEE. D. H. M.A. — Dept. of Zool.. Univ. of British Columbia. VANCOUVER 8, B.C., Canada a Molecular and cellular aspects of arm formation in larvae. Strong ylocentrotus droebachien- sis, S. purpuratus. S. franciscanus (Echinoidea) (in collaboration with C. V. FINNEGAN) LARSON, P. F. M.D. — Muscular Dystrophy Res. Labs., Newcastle Gen. Hosp., NEW- CASTLE upon Tyne NE4 6BE, England a Electron microscope studies of embryonic muscle and of myoblasts grown in tissue culture to determine the temporal and spacial relationships between the polyribosomes and the developing myofilaments. Gallus domesticus (Aves), Mus musculus, Rattus norvegicus (Rodentia), Homo sapiens (Primates) LARSSON. K. S. Odont. D.. Prof. — Lab. of Teratol.. Karolinska Inst.. S-104 01 STOCK- HOLM 60. Sweden a Chemical interaction with mucopolysaccharide synthesis during embryogenesis and fetal development. Mus musculus, Rattus norvegicus (Rodentia) h Experimental developmental morphology: studies on facial formation. Mus musculus, Rattus norvegicus (Rodentia) LASH, J. W. — Dept. of Anat., School of Med., Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104, U.S.A. • LASHER, R. S. Ph.D. — Dept. of Biol., Univ. of Calif. San Diego, LA JOLLA, Calif. 92037, U.S.A. LA SPINA. Miss R. D.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18. 90123 PALERMO. Italy a Fine structure of unfertilized eggs and egg fragments. Ascidia malaca (Ascidiae) b The analysis of the colour pattern. Discoglossus pictus (Anura) LASSAU. J. P. — Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie, France a Croissance de la vulve. Homo sapiens (Primates) LATSHAW. W. K. Ph.D., Prof. — W.C.U.M., Univ. of Saskatchewan, SASKATOON, Sask.. Canada a Closure mechanisms of optic fissure. (Mammalia) LAUFER, H. Ph.D.. Prof. — Div. of Biol. Sci.. Life Sciences Bldg U-42, Univ. of Connec- ticut, STORRS. Conn. 06268. U.S.A. • LAUGE, Miss G. Dr.es Sci. — Lab. d'Entomol. et de Zool.. Fac. des Sci., Univ. de Paris. 91 ORSAY. France a Experimental study of determination and differentiation of genital apparatus, triploid intersexes. Drosophila melanogaster (Diptera) LAVALLE. D. B.Sc. — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4°andar. C.P. 253. BELO HORIZONTE, M.G.. Brazil a Quantitative relations between DNA content and nuclear volume in relation with the germinal line (spermatogenesis). Bu[o paracnemis (Anura) 101 b Determination of the DNA content in polyploid animals. Cerafrophrys dorsata, Odonto- phrynus cultripes, O. dorsata, Bufo paracnemis (Anuca) LAVARACK, J. O. Ph.D. — School of Anat., Univ. of Melbourne. PARKVILLE 3052, Vict., Australia a Histochemical investigation of cell interactions in the development of primary tissues. Gallus gallus (Aves) LaVELLE, A. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Illinois. P.O. Box 6998, CHICAGO, III. 60680, U.S.A. a Cytodifferentiation of neurons. Cauia cobaya, Cricetus aurafus (Rodentia) b Critical periods in neuronal maturation. Cricetus aurafus (Rodentia) c Total lipid and phospholipid changes during neuronal maturation. Cricetus auratus (Ro- dentia) d Immunochemical characteristics of developing brain. Cricetus aurafus (Rodentia) e Immunochemical characteristics of developing lens tissue. Gallus gallus (Aves) f Drug effects on developing nervous tissue. Amhystoma maculatum (Urodela) (in col- laboration with Mrs. F. LaVELLE) LAVELLE, C. L. B. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston. BIRMINGHAM 15, England a Embryology of the dental cusp pattern. Raff us norvegicus (Rodentia), Homo sapiens (Primates) LaVELLE (WILSON), Mrs. F. Ph.D. — Dept. of Anat., Coll. of Med.. Univ. of Illinois, P.O. Box 6998. CHICAGO, 111. 60680, U.S.A. a Hormonal control of early sex differentiation. Cricetus auratus (Rodentia) h Critical periods in neuronal differentiation. Cricetus auratus (Rodentia) c Cytochemical differentiation of nervous tissue. Cricetus auratus (Rodentia) d Drug effects on developing nervous tissue. Amby stoma maculatum (Urodela) (in col- laboration with A. LaVELLE) LAWRENCE, A. J. Ph.D. — Dept. of Cell Biol., Univ. of Glasgow, GLASGOW W.2, Scotland, U.K. a Growth and differentiation of pancreas. Gallus domesficus. (Aves) LAWRENCE, I. E., Jr. Ph.D., Prof. — Dept. of Biol., East Carolina Univ., Box 2577, GREENVILLE, N.C. 27834, U.S.A. a Comb development. Gallus domesficus (Aves) 1. A timed sequence of reciprocal comb and non-comb tissue grafts for tissue interactions. 2. Development of the feathered crest fowl's comb primordium in an experimentally altered position. 3. Tissue reaggregation of comb and feather skin grafts. 4. Histochemical patterns and hormonal influence on comb tissue development. 5. Electrophoretic analysis of comb protein. b Comb and beak malformation resulting from removal of neural crest between stages 7-9. Gallus domesficus (Aves) LAWRENCE, P. A. Ph.D. — Dept. of Genet., Univ. of Cambridge, Milton Road, CAM- BRIDGE, England a The development of bristles; in particular factors controlling their position and their initiation. Oncopeltus fasciafus (Heteroptera) b Developmental genetics. Oncopeltus fasciafus (Heteroptera) LAWSON, Miss K. A. Ph.D. — Hubrecht Lab. (Internat. Embryol. Inst.). Uppsalalaan 1. Universiteitscentrum "De Uithof", UTRECHT, Netherlands a Morphogenesis and functional development of the parotid gland in vivo and i n vitro. Raftus raftus (Rodentia) h Response of embryonic limb-bone rudiments to thyroid hormones in vitro. Gallus domesficus (Aves) LAZARD (HAUBEN). Mrs. L. Dr.es Sci. — Inst. d'Embryol. et Teratol exper. du C.N.R.S.. 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE. France • — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France a Limb regeneration, after X-irradiation. and grafts of various tissues and organs. Siredon mexicanum (Urodela) h Late regulation in the embryonic limb. Gallus domesficus (Aves) LEACH, C. M. Ph.D., Prof. — Dept. of Bot. and Plant Pathol, Oregon State Univ.. CORVALLIS. Ore. 97331. U.S.A. a Light induction of reproduction in phytopathogenic species. (Fungi) h Nature of sporogenic substances "P310" associated with spore formation. (Fungi) c Interaction of light and temperature on the induction of reproduction. (Fungi) LEBLOND. C. P. M.D.. Ph.D., Prof. — Dept. of Anat., McGill Univ., MONTREAL 2, Que.. Canada a Development of the thyroid gland. (Vertebrafa) h The development of bones and teeth as shown on radioautographs with the help of various labeled substances. (Vertebrafa) LEDERMAN, R. J. M.D.. Ph.D. — Sect, on Exper. Embryol., Ophthalmol. Branch, Natl. Inst, of Neurol. Dis. and Stroke, Natl. Inst, of Health, BETHESDA. Md. 20014, U.S.A. 102 a Development of retinal centrifugal fibers. Galhts domesficus (Aves) LE DOUARIN. G. H. Dr.es Sci. — Lab. de Physiol, anim. et cellulaire, Fac. des Sci. de rUniv. de Nantes. 38 Bd. Michelet. B.P. 1044. 44-NANTES. France a Action des rayons X sur la physiologic ct le developpement du coeur embryonnaire. Callus qallus (Aves) b Electrophysiologie du coeur embryonnaire. Callus gallus (Aves) c Metabolisme des organes embryonnaires en culture in vitro d Etude experimentale de la diffcrenciation des cellules myocardiques. Gallus gallus (Aves) e Etude experimentale de la diffcrenciation hypophysaire. Gallus gallus (Aves) LE DOUARIN (CHAUVAC), Mrs. N. M. Dr.es Sci.. Prof. — Lab. d'Embryol., Fac. des Sci. de Nantes, 38 Bd. Michelet, B.P. 1044, 44-NANTES, France a Etude experimentale du developpement du tube digestif. Gallus gallus (Aves) h Etude experimentale du developpement du foie. Callus gallus (Aves) c Etude de la diffcrenciation biochimique des hepatocytes. Gallus gallus (Aves) d Etude experimentale de la diffcrenciation hypophysaire. Gallus gallus (Aves) e Etude experimentale de la diffcrenciation dc la glande thyroide. Gallus gallus (Aves) LEDOUX. L. D.Sc. — Lab. de Biochim. cell., Dept. de Radiobiol., Centre d'Etude de I'Energie Nucleaire, MOL, Belgium a Uptake, fate, and biological effect of exogeneous DNA in living systems, with special attention to embryonic and cancer tissues. Hordeum spec, Avabidopsis spec. (Angiosper- mae), Gallus spec. (Aves), Mus spec. (Rodentia) LEE. H. H. Ph.D. — Dept. of Biol., Univ. of Toledo, TOLEDO, Ohio 43606, U.S.A. a In vitro studies of DNA synthesis induced by Rous sarcoma virus infection in differentiating embryonic cells. Gallus gallus (Aves) b Cytodifferentiation and cell interactions in vitro of testicular tissues with respect to DNA and cell cycle studies. Gallus gallus (Aves) LEES, A. D. Sc.D.. F.R.S. — Imperial Coll. Field Station, SunninghiU, SILWOOD PARK, Berks., England a Control of polymorphic development, with special reference to environmental factors. Megoura viciae (Aphididae, Homoptera) LEESON, C. R. M.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Missouri, COLUM- BIA, Mo. 65201, U.S.A. a Postnatal development and differentiation of the ductus epididymidis with special em- phasis upon the epithelium and the appearance of stereocilia. Rattus rattus (Rodentia) b Postnatal development of muscle with emphasis on the ultrastructure of the mitochondrial population. Sus domesticus (miniature) (Atfiodactyla) LEFFINGWELL, T P. Ph.D. — Cell Research Inst., B.L. 220, The Univ. of Texas at Austin. AUSTIN, Tex. 78712, U.S.A. a Site of synthesis and mode of deposition of primary wall constituents in distinctively differentiated tissues of the primary root; characterization of the Golgi-mediated wall poly- saccharides (isotope labelling, autoradiography, histochemistry). Zea mays (Gramineae) LEFFORD (FERNANDO), Mrs. F. Ph.D. — Dept. of Anat. and Embryol., Univ. Coll., Cower St., LONDON W.C.I, England a Studies on cell locomotory behaviour in tissue culture. Gallus domesticus (Aves), Cavia spec. (Rodentia) LEGAIT, E. J. Prof. — Lab. d'Histol., Fac. de Med., 31 rue Lionnois, 54 NANCY, France LEGAY, J. M. Dr.es Sci., Prof. — Sect, de Biol. Gener. et Appl., Fac. des Sci. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Postembryonic development in relation to parental generation and selection. Bombyx mod (Lepidoptera), Ceratitis capitata (Diptera) LEGENDRE, R. Dr.rer.nat., Dr.es Sci., Prof. — Lab. de Zool., Fac. des Sci. de Montpellier, Place Eugene Bataillon, 34 MONTPELLIER, France a Embryonic and post-embryonic development. (Araneida, Arachnida) LEGHISSA, S. Ph.D., Prof. — 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, BOLOGNA (103), Italy • LEGNAME, A. H. Dr.Biochem. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Respiratory metabolism. Bu[o arenarum (Anura) b Mitochondria during embryogenesis. Bufo arenarum (Anura) LEGNAME, C. R. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Nuclear transplantation (early stages until neurulation). Bufo arenarum (Anura) LE GOASCOGNE, C. D.E.S. — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol, placentaire. Hop. Saint- Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e, France a Anatomic vasculaire, ultrastructure et physiologic de la vesiculc ombilicale (omphalopla- centa). Rattus norvegicus albinus, Cavia cobaya (Rodentia) h Culture organotypiquc dc la vesiculc ombilicale. Microscopic clectronique. Rattus nor' vegicus albinus (Rodentia) c Developpement in vitro des blastocystes. Rattus norvegicus albinus (Rodentia) 103 LEGRAND, Miss C. — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol, placen- taire, Hop. Saint- Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e, France a Le trophoblaste endovasculaire. (Rodentia) LEHMAN, H. E. Ph.D. — Dept. of Zool., Univ. of North Carolina, CHAPEL HILL, N.C., U.S.A. • LEHMANN, F. E. Dr.phil., Prof. (Emer.) — Zool. Inst., Univ. Bern, Sahlistr. 8, 3000 BERN, Switzerland • LEHMANN, R. Dr.rer.nat. — Zool. Inst, der Univ. Freiburg, Katharinenstr. 20, 78 FREI- BURG i.Br.. W.Germany LEIBENGOTH, F. Dr.rer.nat. — Zool. Inst, der Univ., Holderlinstr. 12, 74 TUBINGEN. W.Germany LEIKOLA, A. H. A. Ph.D. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland a Primary induction. Gallus domesticus (Aves) LEIST, K.-H. Dipl.Biol. — Zool. Inst, der Univ., Siesmayerstr. 70, 6000 FRANKFURT a.M., W.Germany a Effects of ACTH and adrenocortical hormones. Amby stoma spec, Salamandra salamandra (Urodela), Xenopus laevis (Anura) b Development of endocrine tissue. Amby stoma spec, Salamandra salamandra (Urodela), Xenopus laevis (Anura) c Biochemical changes during development induced by ACTH and steroid hormones. Xeno- pus laevis (Anura) LE'JOHN, H. E. B. Ph.D. — Fourah Bay Coll., Univ. Coll. of Sierra Leone, FREETOWN, Sierra Leone, W.Africa LEMEZ, L. MUDr. — Dept. of Anat.. Charles Univ., U nemocnice 3, PRAHA 2, Czecho- slovakia a Embryonal haematology. Gallus domesticus (Aves) h Experimental topogenesis and morphology of the pneumogastric system. Gallus domesticus (Aves) LE MOIGNE, A. — Lab. de Biol. Anim., Univ. de Paris, Fac des Sci. d'Orsay, 91 ORSAY, France a Developpement embryonnaire (etude au microscope electronique) . (Planaciidae, Turbel- laria) LEMUS, D. Dr. Vet. — Cat. de Embriol., Escuela de Med., Univ. de Chile, Zaiiartu 1042, SANTIAGO, Chile LENDER, Th. Prof. — Lab. de Biol. Anim., Univ. de Paris, Fac. des Sci. d'Orsay. 91 ORSAY. France • a Problemes de la regeneration: substances inductrices et inhibitrices. (Planaciidae, Tur- bellaria) h Etude au microscope electronique de la regeneration (en particulier des neoblastes). Dugesia gonocephala (Turbellacia) c Neurosecretion. (Planaciidae, Turbellacia) d Regeneration. Astecina gibbosa (Astecoidea, Echinodecmata) e Culture in vitro d'organes larvaires. Gallecia spec. (Lepidopteca), Peciplaneta spec. (Octhopfeca) f Culture in vitro de gonades femelles. Tenebrio molitoc (Coleopteca) LENDON. R. G. B.Sc. — Dept. of Pathol., Children's Hospt., Western Bank, SHEFFIELD SIO 2TH, England a Spina bifida: 1. experimental production by means of trypan blue. 2. embryogenesis of the defects produced. 3. attempts to produce some of the defects by means of hypoxia. Rattus nocvegicus (Rodentia) LENICQUE, P. M. Dr.es. Sci. — Lab. de Biol, des Invert. Marins. Museum Natl. d'Hist. Nat.. 57 rue Cuvier. PARIS "Ve, France a Role des neurohormones aux cours de la regeneration; etude histochimique et etude phar- macologique de I'effet des neuropharmaca. Hydca littocalis, Clava squamata (Hydcoidea), Dugesia tigcina (Tucbellacia) LENSKY. Y. Ph.D. — Dept. of Entomol., Fac. of Agric, Hebrew Univ. of Jerusalem, P.O.B. 12, REHOVOTH, Israel a Changes occurring in proteins of haemolymph during metamorphosis. Apis mellifica var. ligustica (Hymenopteca) h Separation, characterization and identification of proteins of haemolymph. in three castes and in two races. Apis mellifica var. ligustica (Hymenopteca) c Distribution of blood antigens in fluid compartments and tissues of developing and adult animals, using immuno-chemical and biochemical analysis. Apis mellifica var. ligustica (Hymenopteca) d Distribution of blood antigens in fluid compartments and tissues in diapausing pupae and developing adults. Hyalophoca ceccopia (Lepidopteca) e The ultrastructure of drone spermatozoa and their position in male and female storage organs. Apis mellifica var. ligustica (Hymenopteca) 104 LENZ, W. Dr.med., Prof. — Inst, fur Humangenet. der Univ., Vesaliusweg 12/14, 44 MONSTER/Westf., W.Germany a Analysis of thalidomide embryopathy in relation to time of intake. Homo sapiens (Pri- mates) LEONARD. A. Ph.D. — Lab. de Genet., Dept. de Radiobiol., Centre d'Etude de I'Energie Nucleaire, MOL, Belgium a Study of chromosome aberrations induced by X-irradiation in u t e r o. (Mammalia) LEONE, V. M.D. — Cat. di Embriol. e Morfol. Sperim., Univ. di Milano, Via Celoria 10, 20133 MILANO, Italy • LEONIENI. ]. Dr. — Dept. of Histol. and Embryol., Acad, of Med., ul.Narutowicza 60, fLODZ, Poland a Comparative histological, histochemical, and electron microscopical studies on the devel- opment, structure, and function of the subcommissural organ. (Mammalia). Homo sapiens (Primates) LEOPOLD, R. A. Ph.D. — USDA Mctab. & Radiat. Research Lab., State Univ. Station. FARGO, N.D. 58103, U.S.A. a Cytochemistry of developing reproductive structures. Musca domestica (Diptera) b In vivo and in vitro investigation of cuticle deposition during leg regeneration. Leucophaea maderae (Dicfyoptera) LEPORI, N. G. Prof. — 1st. di Zool., Fac. di S.M.F.N., Univ. di Sassari, Via Murroni 25, 07100 SASSARI, Italy a Research on the origin of the asymmetry of the female gonad (blastoderm in vitro). (Aves) h Research on the origin of asymmetrical heart development (blastoderm in vitro). Gallus spec, Anas spec. (Aves) c Research on the inductor of the uro-genital organs. Gallus spec. (Aves), Rana spec. Trituras spec. (Amphibia) LE ROUX, J. M. W. Dr.med.vet. — Dept. of Anat.. Fac. of Vet. Sci., Univ. of Pretoria, P.O. ONDERSTEPOORT, South Africa LESH, Miss G. E. Ph.D. — Dept. of Biol. Sci., State Univ. of New York at Albany, ALBANY, N.Y. 12203, U.S.A. a Investigations of neoblast movement and cell differentiation. (Hydrozoa) b Studies of polarity and cell differentiation. (Polychaeta) LESSEPS, R. J., S.J. Ph.D. — Dept. of Biol. Sci., Loyola Univ., NEW ORLEANS, La. 70118. U.S.A. a Ultrastructure of cell surface (embryonic liver, heart, neural retina, limb bud). Gallus domesficus (Aves) LEVAK (SVAJGER). Mrs. B. D.Sc — Inst, of Biol., Univ. of Zagreb, Salata, ZAGREB. Yugoslavia a Investigation of early differentiation; transplantation, in vitro culture. Rattus nor' vegicus (Rodentia) (in collaboration with N. SKREB and A. gVAJGER) b Investigation on developmental capacities of tissues of the chorioallantoic membrane. Gallus domesticus (Aves) (in collaboration with N. SKREB and A. SVAJGER) LEVENSON, G. E. Ph.D., D.D.S. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADEL- PHIA, Pa. 19104, U.S.A. a Comparison of three types of embryonic cartilage when grown as monolayer cultures. Gallus domesficus (Aves) b Effect of ascorbic acid in medium on growth and differentiation of embryonic cartilage in monolayer culture. Gallus domesticus (Aves) c Histogenesis of embryonic liver: cell culture techniques, effects of metabolites on differen- tiation. Gallus domesticus (Aves) LEVER. W. E. — Biol. Div., Oak Ridge Natl. Lab.. P.O. Box Y. OAK RIDGE. Tenn. 37830, U.S.A. a Temporal and spatial patterns of cell replication and nuclear degeneration during lens development and growth; computer analysis of mathematical models. Gallus domesticus (Aves) (in collaboration with S. P. MODAK) LEVI, C. Dr.es Sci., Prof. — Lab. de Biol. Invert. Marins. Museum Natl. d'Hist. Nat.. 57 rue Cuvier, PARIS Ve, France a Descriptive and experimental embryology, morphogenesis, cytology (electron microscopy). (Pori[era) LEVI-MONTALCINI, Miss R. M.D., Prof. — Dept. of Biol., Washington Univ., ST. LOUIS. Mo. 63130, U.S.A. • a Study of action of the nerve growth factor and related problems in experimental neuro- biology b Experimental study of the structural organization and interconnection between different brain parts and ganglia. Periplaneta americana (Dictyopteca) c A technique to grow nerve and glia cells from explants of brain and ganglia in order to study their growth and differentiation under different experimental conditions. Periplaneta americana (Dictyoptera) 105 LEVIS, A. G. Dr.biol.sci. — Inst, of Gen. Biol, Univ. of Padova, Via Loredan 10, 35100 PADOVA, Italy a Myogenesis in tissue culture. Gallus domesticus (Aves), Rattus norvegicus, Cavia por- cellus (Rodentia) LHOTKA, J. F., Jr. M.D., Ph.D.. Prof. — Dept. of Anat.. Med. School, Univ. of Oklahoma, 801 NE 13th St., OKLAHOMA-City. Okla. 73104, U.S.A. a Localization of Ca and Fe in the developing embryo. Gallus domesticus (Aves),Sus scrofa ( Artiodactyla) . Homo sapiens (Primates) h Histochemical localizations of polysaccharides in embryo and early fetus, with emphasis on vascular system. Homo sapiens (Primates) LI, Mrs. Yu-Ying FU Ph.D. — Mycol. Sect., Natl. Communic. Disease Center, U.S. Publ. Health Service, ATLANTA, Ga. 30333, U.S.A. LIANG, H. M. Ph.D., Prof. — Dept. of Biomorphics, Natl. Defense Med. Center, P.O. Box 7432, TAIPEI, Taiwan, Republ. of China a The action of aureomycin on the growth of thyroidectomized tadpoles. Rana catesbeiana (Anuca) h Microscopic study of thyroidectomized tadpoles treated with aureomycin. Rana catesbeiana (Anura) c Microscopic study of the aureomycin-treated thyroid gland of tadpoles. Rana narina (Anura) d Development of the pituitary gland. Rana catesbeiana (Anura) LIEDKE, Mrs. K. B. Ph.D.. Prof. — Dept. of Biol.. Fairleigh Dickinson Univ., TEANECK, N.J. 07666, U.S.A. (no embryological work in progress) LIEM, K. F. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO, 111. 60612, U.S.A. LIERSE, W. Dr.med. — Anat. Inst, der Univ. Basel, Pestalozzistr. 20, 4056 BASEL, Switzerland LIMBORGH, J. van M.D., Prof. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O., Netherlands a Sex differentiation. Anas boschas (Aves) b Morphogenesis of the skull. Gallus domesticus (Aves) c Development of the harelip condition (descriptive studies). Homo sapiens (Primates) LINDENMAYER, A. Ph.D., Prof. — Central Interfaculty, Univ. of Utrecht, Heidelberg- laan 2, "De Uithof", UTRECHT, Netherlands a Computer simulation of the development of branching filaments. (Algae; Fungi) h The morphogenetic processes giving rise to phyllotactic patterns of the shoot apex. (Ptecidophyta; Spermatophyta) c Developmental instructions for cellular interactions and divisions considered from the point of view of automata and language theory. LINDSAY, D. T. Ph.D., Prof. — Dept. of Zool., Univ. of Georgia, ATHENS, Ga. 30601, U.S.A. a Developmental regulation of chromosomal histone synthesis in the embryo. Strongylo- centrotus purpuratus (Echinoidea) LINDSLEY, D. L. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109. LA JOLLA, Calif. 92037, U.S.A. a Genetic control of gametogenesis. Drosophila melanogaster (Diptera) LIOSNER, L. D. Dr.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R.. Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. LIOTTI, F. S. Dr., Prof. — 1st. di Biol. Gener., Fac. di Med., Via del Giochetto, 06100 PERUGIA, Italy a Richerche sulla neurosecrezione. Dugesia lugubris (Turbellaria), Allolobophora caliginosa (Oligochaeta) h Richerche sull'eritropoietina. Oryctolagus cuniculus (Rodentia) LIPEDE, A. G. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria LISSIA (FRAU). Mrs. A. M. Dr. — 1st. di Zool., Fac. di S.M.F.N.. Univ. di Sassari, Via Murroni 25, 07100 SASSARI, Italy a Gonadogenesis and sexual differentiation in hermaphroditic forms. Diplodus vulgaris, Boops salpe. B. boops, Lythognathus mormyrus (Sparidae, Teleostei) LIVERSAGE, R. A. Ph.D.. Prof. — Ramsay Wright Zool. Labs., Dept. of Zool., Univ. of Toronto, 25 Harbord St., TORONTO 5, Ont.. Canada a Influence of nerves and endocrines on regeneration. Tciturus viridescens (Urodela) LIWSKA. Miss J. mgr.Biol.Sci. — Dept. of Histol. and Embryol.. Fac. of Vet. Med.. Warsaw Agricult. Univ., Grochowska 272, WARSZAWA, Poland a Histochemical studies on differentiation of gonads. Gallus domesticus (Aves) LOBBECKE, E.-A. Dr. — Zool. Inst, der Univ. Koln, Weyertal 119, 5 KOLN-Lindenthal. W.Germany a Biochemical investigation of UV-inactivation and visible light or sperm reactivation in eggs at very early developmental stages. Habrobracon hebetoc (= juglandis) (Hymen- opt era) 106 b Cell proliferation in imaginal wing discs. Various species (Lepidopteca) LOBO, J. F. Ph.D. — Cell Research Lab., Dept. of Zool., Nowrosjee Wadia Coll., POONA- 1, India a Alkaline phosphatase and mucopolysaccharides in eggs and larvae (histochemical methods). Betfa splendens (Teleostei) h Phospholipids and non-specific esterases in larvae and adults (histochemical methods). Rana tigrina (Anura) LOCKE M Ph D., Prof. — Dept. of Biol., Developm. Biol. Center, Case Western Reserve Univ., 2127 Cornell Rd.. CLEVELAND, Ohio 44106, U.S.A. a The ultrastructure and physiology of insect development, particularly during the molt/ intermolt cycle. Calpodes ethlius (Hespedidae, Lepidoptera) LOCKSHIN, R. A. Ph.D. — Dept. of Physiol., School of Med. and Dent., Univ. of Roches- ter. 260 Crittenden Blvd.. ROCHESTER, N.Y. 14620, U.S.A. LOEFFLER, C. A. Ph.D. — Dept. of Zool, Univ. of Arkansas, FAYETTEVILLE, Ark. 72701. U.S.A. a Permeability and osmoregulation. Rana spp. (Anura) b Various morphogenetic topics. 1. Somitogenesis. 2. Long-term interspecific tolerance. Rana spp. (Anura) LOFBERG, J. E. Fil.kand. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Electron microscopic investigation on the process of neurulation. Ambystoma mexicanum (Urodela) LOFTS, B. — Dept. of Zool. and Comp. Anat., St. Bartholomew's Med. Coll.. Charterhouse Square. LONDON E.C.I, England LOKHORST, Miss W. — Lab. of Veter. Physiol., State Univ. of Utrecht, Alex. Numankade 93, UTRECHT, Netherlands a Physiology of respiration in embryos under influence of environmental conditions. Gallus domesficus (Aves) (in collaboration with C. ROMIJN) LOMBARD (DES GOUTTES), Mrs. M. N. Lie. es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Development of interactions between pituitary, pineal and gonads in vitro. Mas mus- culus (Rodentia) b Induction of kidney tubules in metanephrogenetic mesenchyme. Mus musculus, Rattus norvegicus (Rodentia) LOMBARDO. F. Dr.Biol.Sci. — 1st. di Anat. Comp., Univ. di Modena, Via Berengario 14, 41100 MODENA, Italy a Regeneration in the adult retina. Rana esculenfa (Anura) b Regeneration of the retina in young animals. Carassius auratus (Teleostei) c Regeneration of the cerebellum in young animals. Tinea tinea (Teleostei) d Regeneration of the telencephalon in post-metamorphic animals. Rana eseulenta (Anura) LONDON, J. M.Sc. — Dept. of Embryol. and Teratol, Tel-Hashomer Hosp., Tel-Aviv Univ. Med. School, TEL-AVIV, Israel a Biophysical characteristics of syncytial placenta cells at term. Homo sapiens (Primates) (in collaboration with L. A. NEBEL) LONGENECKER. B. M. Ph.D. — Dept. of Zool.. Fac. of Sci., Univ. of Alberta, EDMON- TON, Alta., Canada a Immunogenetic analysis of graft-versus-host reactions in the embryo using the chorio- allantoic pock technique. Gallus domesticus (Aves) b Effect of physical and chemical agents on immunologically competent cells using the chorioallantoic pock assay system. Gallus domesticus (Aves) LOOMIS, W. F. M.D., Prof. — Graduate Dept. of Biochem., Brandeis Univ., WALTHAM, Mass. 02154. U.S.A. LOOMIS, W. F., Jr. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037, U.S.A. a A biochemical and genetic investigation of the mechanisms of development. Dietyostelium discoideum (Aerasiales) LOPASHOV, G. V. Dr.biol.sci., Prof. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R.. Vavilov St. 26, MOSCOW B-133, U.S.S.R. • a Analysis of inductive interactions of the cells in differentiating retina by means of com- binations of cells of the eye rudiment and the gastrula ectoderm. Rana temporaria, R. acvalis, R. eseulenta (Anura). Gallus domestieus (Aves) (in collaboration with Mrs. O. A. HOPERSKAYA) b Metaplastic potencies of embryonic and larval eye for lens and retina regeneration. Leueis- cus bergi (Cyprinidae) . Anoptiehthys jordani (Characidae, Teleostei) (in collaboration with Miss A. A. SOLOGUB) c Stimulation of metaplasia of the pure pigment epithelium of adult animals into retina by means of agents from larval (or embryonic) retina. Rana temporaria, R. ridibunda (Anura), (Gallus domestieus (Aves), Mus museulus (Rodentia) (in collaboration with Miss A. A. SOLOGUB) 107 d Analysis of the ability of combinations of some larval eye tissues for lens induction in gastrula ectoderm. Triturus taeniatus (Urodela) e Analysis of the determination of the site of formation of the falciform process by means of creation of additional choroid fissures. Leuciscus bergi (Cyprinidae, Teleostei) f The influence of fractionated homogenates of some differentiating tissues (retina, muscle etc.) on the differentiation of future ectoderm in uncleaved eggs and early stages of cleavage. Triturus taeniatus (Urodela), Gallus domesticus (Aves) (in collaboration with Mrs. L. A. NIKITINA) LOS, J. A. M.D. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTER- DAM-O., Netherlands a Development of the heart and cardiac malformations. Homo sapiens (Primates) b Light-microscopical, electron-microscopical, histochemical, physiological and experimental teratogenetic studies of heart development in the embryo. Gallus domesticus (Aves) (in collaboration with J. DRUKKER, P. J. BIESENBEEK and H. M. LAANE) LOUVET, J. -P. Dr.Biol.anim. — Lab. de Zool. Expcr., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE. France a Recherches descriptives et experimentales sur la formation de la bandelette embryonnaire. Carausius spec. (Cheleutoptera) h Neurogenese. Carausius spec. (Cheleutoptera) LOVE, D. Ph.D. — Dept. of Anat., Developm. Biol. Center, Case Western Reserve Univ., 2109 Adelbert Rd., CLEVELAND, Ohio 44106, U.S.A. a Chemistry of developing muscle, b Endocrine regulation of carbohydrate and nucleic acid metabolism in embryonic muscle. Gallus domesticus (Aves) L0VTRUP (REIN), Mrs. H. Ph.D. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, Sweden a Nuclear RNA metabolism during early embryogenesis. Lytechinus variegatus (Echinoidea) L0VTRUP, S. Dr.Phil., Prof. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA. Sweden • a Permeability and osmoregulation. Rana spp. (Anuca) b Carbohydrate metabolism. Rana spp. (Anura), Gallus domesticus (Aves) (in collaboration with S. B. NILSSON) c Cell transformation and cell differentiation. Rana spp. (Anura). Gallus domesticus (Aves) d Oxygen uptake during embryogenesis. Tubifex spp. (Oligochaeta) (in collaboration with U. LANDSTROM) LOWER, W. R. Ph.D. — Clin. Pharmacol. Res. Inst., 2030 Haste St.. BERKELEY, Calif. 94704, U.S.A. a The genetic, biochemical, and developmental differences between two strains of a free- living dioecious form. Panagrellus redivivus (Nematoda) b Genetic, biochemical, and developmental changes in strains selected for tolerance to high temperatures. (Nematoda) c Axenic maintenance of various spp. for developmental studies. (Nematoda) LOWERY, R. S. Ph.D. — Dept. of Botany and Zool., Sir John Cass Coll.. Jewry St., LONDON E.C.3, England (no embryological work in progress) LOY. J. B. Ph.D. — Plant Science Dept., Univ. of New Hampshire. DURHAM, N.H. 03824, U.S.A. a The interactions of auxins, gibberellins and growth regulators (fluorene-9-carboxylic acids). Cucurbita maxima (Cucurbitaceae) b Developmental-taxonomic study on the distribution of peroxidase isozyme patterns in g Free-martinisme spontane. (Aves) (en collaboration avec Mrs. Y. LUTZ-OSTERTAG) LUBICZ (NAWROCKI), C M. B.Sc. — Dept. of Vet. Anat., Brownlow Hill, P.O. Box 147, LIVERPOOL L69 3BX. England LUCAS, J. S. Ph.D. — Dept. of Zool.. School of Biol. Sci., Univ. Coll. of Townsville. P.O. Box 999, TOWNSVILLE, Qld.. 4810 Austraha a Embryonic and larval development and their response to environmental factors. Halicac- cinus spp. (Brachyuca, Decapoda) LUCEY, E. C. A. B.Sc. — Research Film Unit. Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland. U.K. a Film of normal development. Gallus domesticus (Aves) b Technique of in vitro culture of embryo; descriptive material covering first 72 hours of development in vitro. Gallus domesticus (Aves) c Film showing nuclear transfer technique. (Amphibia) LUCKENBILL. Miss L. M. Ph.D. — Dept. of Biol. Sci., Smith College, NORTHAMPTON. Mass. 01060. U.S.A. a Electron microscopy of early phases of epidermal wound healing. Rana pipiens (Anura) b Electron microscopy of eggs. Rana pipiens (Anura) LODTKE, H. Dr., Prof. — Zool. Inst, der Univ., Ketzerbach 53, 355 MARBURG/Lahn, W.Germany 108 LUDWIG, D. Ph.D.. Prof. — Biol. Lab.. Fordham Univ.. NEW YORK, Bronx, N.Y. 10458.' U.S.A. LUDWIG. K. S. Dr.med.. Prof. — Abt. Anat., Rhein-Westf. Techn. Hochschule Aachen. Germany, c/o Anat. Inst, der Univ.. Pestalozzistr. 20. CH 4056 BASEL. Switzerland LULLINI, Mrs. I. GALLIANI M.D. — 1st. di Anat. Umana Norm.. Univ. di Bologna. Via Irnerio 48. BOLOGNA, Italy LUSE, Miss S. A. — Biol. Sci. Dept.. Calif. State Polytechn. Coll., SAN LUIS OBISPO. Calif. 93401, U.S.A. a Development and mineralization of scales; role of the epidermis in scale development; light and electron microscopy of developing skin. Poecilia reticulata, Ocyzias latipes, Salvelinus fontinalis (Teleostei) (in collaboration with R. J. KREJSA) LUTWAK (MANN). Mrs. C. M.D.. Ph.D. — A.R.C. Unit of Reprod. Physiol. & Biochem.. Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIEX3E. England a Physiology and biochemistry of the early embryo. Rattus rattus (Rodentia). Oryctolagus cuniculus (Lagomorpha) b Teratology. Rattus rattus (Rodentia), Oryctolagus cuniculus (Lagomorpha) LUTZ. H. Dr.es Sci.. Prof. — Lab. de Biol. Anim., 1 Av. Vercingetorix, 63 CLERMONT- FERRAND. France • a Developpement du blastoderme pendant les premieres heures de 1' incubation. Anas spec. (Aves) h La polyembryonie experimentale; I'orientation des embryons. (Aves) c Polyembryonie experimentale. ( Salmonidae, Teleostei) (en collaboration avec Mrs. Y. LUTZ-OSTERTAG) d Formation de I'entoblaste. (Aves) e Action des ultra-sons sur I'embryon et sur differents organes. Galhts spec. (Aves) (en collaboration avec Mrs. Y. LUTZ-OSTERTAG) f Culture in vitro du blastoderme. (Aves) (en collaboration avec Mrs. Y. LUTZ- OSTERTAG) g Free-martinisme spontane. (Aves) (en collaboration avec Mrs. Y. LUTZ-OSTERTAG) LUTZ (OSTERTAG). Mrs. Y. Dr.es Sci. — Lab. de Biol. Anim.. 1 Av. vercingetorix, 63 CLERMONT-FERRAND. France a La genese de I'asymmetrie du tractus genital et la regression des canaux de Miiller par la methode d'explantations. Gallus spec. (Aves) b Role des hormones dans la differenciation primaire du sexe. Gallus spec, Coturnix coturnix (Aves) c Polyembryonie experimentale. (Salmonidae, Teleostei) (en collaboration avec H. LUTZ) d Action des ultra-sons sur I'embryon et sur differents organes. Gallus spec. (Aves) (en collaboration avec H. LUTZ) e Culture in vitro du blastoderme. (Aves) (en collaboration avec H. LUTZ) f Free-martinisme spontane. (Aves) (en collaboration avec H. LUTZ) g Hybridisation. Anas spec. (Aves) LYNE. A. G. Ph.D. — Div. of Anim. Physiol.. C.S.I.R.O., Ian Clunies Ross Anim. Res. Lab.. Great Western Highway. (P.O. Box 144, Parramatta), PROSPECT, N.S.W. 2150, Australia a Development of skin and hair. Trichosmus vulpecula, Perameles nasuta (Marsupialia) b Structure and development of hair follicles and associated glands. Oi^is spec. (Artio' dactyla) LYNN W. G. Ph.D.. Prof. — Biol. Dept.. Grad. School of Arts and Sci., The Catholic Univ. of America, WASHINGTON, D.C. 20017, U.S.A. a Melanogenesis and melanin turnover. Xenopus laevis, Rana sylvatica, R. pipiens (Anixra) h Skin development and ecdysis. Sceloporus Occident alis (Lacertilia), Chionactis occipitalis (Ophidia) LYONS, Miss K. M. Ph.D. — Zool. Dept., King's Coll., Strand, LONDON W.C.2, England a Electron microscope studies on the development of the outer body layers. Entobdella soleae (Monogenea, Trematoda) LYSER (SHOUBY), Mrs. K. M. Ph.D., Prof. — Dept. of Biol. Sci., Hunter Coll. of the City Univ. of New York, 695 Park Ave., NEW YORK, N.Y. 10021, U.S.A. — (Guest Invest.) The Rockefeller Univ., NEW YORK, N.Y. 10021. U.S.A. a Differentiation of the central nervous system; electron microscopy. Gallus domesticus (Aves) h Effects of adjacent tissues and other factors on differentiation of neural tube in organo- typic culture; light and electron microscopy. Gallus domesticus (Aves) LYTLE, Ch. F. Ph.D.. Prof. — Dept. of Zool., North Carolina State Univ., Box 5577, RALEIGH, N.C. 27607, U.S.A. a Nucleic acid metabolism in intracellular parasite development. Eimecia tenella (Sporozoa h Factors influencing budding. Hydra litf oralis, Chlorohydra hadleyi (Hydroidea) c Growth and development in marine species. Eudendrium ramosum. E. carneum, Pennania tiarella (Hydroidea) McCAFFERTY, R. E. Ph.D., Prof. — Dept. of Anat., Med. Center, West Virginia Univ., MORGANTOV/N. W.Va. 26506, U.S.A. 109 McCALLlON, D. J. Ph.D., Prof. — Dept. of Anat., Fac. of Med., McMaster Univ., HAMILTON, Ont., Canada • a Development of specific proteins in the central nervous system studied by fluorescence and electrophoresis. Gallus domesticus (Aves) b Specific chemical relationships in the development and regeneration of the lens. Gallus domesticus (Aves) c Heterogenous induction. Gallus domesticus (Aves) d Teratological and embryotoxic effects of tissue antibodies. Gallus domesticus (Aves), Rattus norvegicus, Mus musculus (Rodentia) McCANCE, I. — Dept. of Physiol., Monash Univ., CLAYTON. Vict. 3168, Australia a Descriptive morphology and histochemistry, and experimental morphology of the cere- bellum (C.R. length 2 cm until after birth). Felis domestica (Carnivora) McCLURE, T. Ph.D. — Dept. of Anat., Med. School, Univ. of Oklahoma, 801 NE 13th St.. OKLAHOMA-City, Okla. 73104, U.S.A. a Developmental variations in the central nervous system. Papio spec, Macaca mulafta (Primates) McCONKEY, E. H. Ph.D., Prof. — Inst, for Developm. Biol., Univ. of Colorado, BOUL- DER, Colo. 80302, U.S.A. McDEVITT, D. S. Ph.D. — Dept. of Anim. Biol., School of Vet. Med., Univ. of Penn- sylvania, PHILADELPHIA, Pa. 19104, U.S.A. a The soluble lens proteins (crystallins) in lens differentiation, as studied by column chro- matography, electrophoresis, and immunofluorescence. Rana pipiens (Anura) MACELA, A. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a Proteins and antigens in early development. (Amphibia) (in collaboration with A. RO- MANOVSKf, J. PALECEK and J. MACHA) McFARLANE, A. B.Chir. — Dept. of Anat., The Univ., NEWCASTLE upon Tyne 1, England McGAUGHEY, R. W. Ph.D. — Worcester Found, for Exper. Biol., 222 Maple Ave., SHREWSBURY, Mass. 01545, U.S.A. a The rate of repair of chromosome breaks in primary spermatocytes at various times after X- and cobalt irradiation. Mus musculus (Rodentia) b X-irradiation during gestation to determine doses lethal and teratological to embryos and fetuses; karyotype studies of irradiated fetuses. Meriones unguiculatus (Rodentia) c Chromosome and immunological study of hybrids. Mustela vison x M. putorius (Carni- vora) d Chromosome study of hybrids. Oryctolagus cuniculus x Lepus americanus (Lagomorpha) McGOVERN, P. T. — Dept. of Anat., Royal Vet. Coll., LONDON N.W.I, England a Immunological aspects of foetal-maternal relationships exemplified by hybrid gestation. Capra hircus x Ovis aries (Artiodactyla) (in collaboration with J. L. HANCOCK) MACHA, J. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a Proteins and antigens in early development. (Amphibia) (in collaboration with A. ROMA- NOVSK?, J. PALECEK and A. MACELA) McKEEHAN, M. S. f Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of Virginia, CHARLOTTESVILLE, Va. 22901. U.S.A. (deceased) McKENZIE, J. M.D. — Dept. of Embryol., Marischal Coll., Univ., of Aberdeen, ABER- DEEN AB9 IAS, Scotland, U.K. 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. Gallus gallus (Aves) c The effects of adult tissue homogenates on the early embryo and cell cultures. Gallus gallus (Aves) McKIEL, G. D. M.A. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Cower St., LONDON W.C.I, England a Study of contact inhibition in synchronous populations of heart fibroblasts. Gallus gallus (Aves) McKINNELL, R. G. Ph.D., Prof. — Dept. of Biol., Tulane Univ., NEW ORLEANS, La. 70118, U.S.A. a Nuclear transplantation studies: 1) developmental potential of transplanted embryonic nuclei; 2) morphological and biochemical similarities of isogenic groups. Rana areolata circulosa (Anura) b Histocompatibility studies in animals produced by nuclear transplantation. Rana pipiens (Anura) (in collaboration with E. P. VOLPE) MACKLIN, M. R. Ph.D. — Dept. of Biomed. Engin., Case Western Reserve Univ., CLEVELAND, Ohio 44106, U.S.A. a The effects of the inorganic ionic environment, both extra-cellular and intra-cellular, on cell differentiation. Hydra spec. (Hydroidea) McLAREN, Miss A. Ph.D. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland, U.K. 110 a Induction of super-fecundity by hormone treatment. Mus musculus (Rodentia) b Influence of genotype and early embryonic environment upon development, investigated by in vitro cultivation of early embryos. Mus musculus (Rodentia) c Immunization against spermatozoa, and its effects on female reproductive performance. Mus musculus (Rodentia) d A maternal effect exerted by females homozygous for the recessive gene hairless. Mas musculus (Rodentia) e Blastocyst-uterine interactions during the early stages of implantation, and during physio- logical and experimental delay of implantation. Mus musculus (Rodentia) MACMILLAN. E. W. Dr. — Dept. of Anat., Univ. of Liverpool, LIVERPOOL 3, England a The rate of transport of spermatozoa through the ductus epididymidis. (Mammalia) McNUTT, C. W. Ph.D., Prof. — Dept. of Anat., The Univ. of Texas Med. School at San Antonio, 7703 Floyd Curl Drive, SAN ANTONIO, Tex. 78229, U.S.A. a Developmental genetics of a tail-labyrinthine mutant (pr.) Mus musculus (Rodentia) b Development and pathological progression of a new neuromuscular mutant. Mus musculus (Rodentia) MACOTTA, V. M.D. — Dept. of Anat., Univ. of Turin, Corso M.D'Azeglio 52, 10126 TORINO, Italy a Growth in vitro of adrenergic neurons MacRAE, Mrs. E. J. KRUGELIS Ph.D., Prof. — Dept. of Anat., Coll. of Med.. Univ. of Illinois, 1853 W. Polk St., CHICAGO, 111. 60612, U.S.A. a Electron microscopy. Dugesia tigrina, Notoplana acticola (Turbellaria) b Histones in erythropoiesis. Gallus domesticus (Aves), Oryctolagus cuniculus (Lago- morpha) McWHINNIE, Miss D. J. Ph.D. — Dept. of Biol.. Sci., De Paul Univ.. 1036 W.Belden Ave.. CHICAGO. 111. 60614, U.S.A. a Biochemical studies on embryonic bone with particular reference to metabolic pathways, enzyme systems, and hormone effects. Gallus domesticus (Aves), Rana pipiens (Anura) MADERSON. P. F. A. Ph.D. — Dept. of Biol., Brooklyn Coll., Bedford Ave. 6 Ave. H, NEW YORK, Brooklyn, N.Y. 11210, U.S.A. a Influence of environmental factors and hormones on epidermal turn-over, in vitro and in vivo. Iguana iguana, Anolis cacolinensis, Dipsosaurus dorsalis, Gekko gecko, Coleonyx variegatus (Lacertilia), Elaphe obsoleta (Ophidia) h Wound healing. Iguana iguana, Anolis carolinensis, Dipsosaurus dorsalis, Gekko gecko, Coleonyx variegatus (Lacertilia), Elaphe obsoleta (Ophidia) c Tail regeneration with reference to epidermal replacement. Iguana iguana, Anolis caroli- nensis, Dipsosaurus dorsalis, Gekko gecko, Coleonyx variegatus (Lacertilia) MADJEREK, Z. S. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTER- DAM-O., Netherlands a Experimental studies on genito-urinary tract development. Mus spec. (Rodentia) MAEDA (KIBATA), Mrs. M. B.Sc. — Dept. of Biol., Coll. of Gen. Educ, Osaka Univ., Toyonaka, OSAKA, 560 Japan a Effect of light on morphogenesis. Chara spec, Nitella spec. (Characeae) b Effects of far-red and red illumination on seed germination. Lactuca sativa (Composifae. Angiospermae) MAGGIO, Miss R. Ph.D., Prof. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy • a Activation of ribosomes at fertilization. Paracpntrotus lividus (Echinoidea) MAHOWALD, A. P. Ph.D. — Dept. of Biol., Marquette Univ., 530 North 15th St., MILWAUKEE, Wis. 53233, U.S.A. a Ultrastructure of embryos: wild-type and genetic mutants. Drosophila melanogaster, D. hydei, D. virilis, D. immigrans, D. willistoni (Dipteca) h Polar granule morphology and function. Drosophila melanogaster, D. hydei, D. virilis, D. immigrans, D. willistoni (Diptera) c Ultrastructural changes during oogenesis; differentiation of organelles. Drosophila melano- gaster, D. hydei, D. virilis, D. immigrans, D. willistoni (Diptera) d Fine structure and cytochemistry of chromatin. Drosophila melanogaster, D. hydei, D. virilis, D. immigrans, D. willistoni (Diptera) e Intercellular migration of centrioles in oogenesis. Drosophila melanogaster (Diptera) f Fine structure of oogenesis and early development. Miastor spec. (Diptera) MAISONHAUTE, CI. — Lab. de Zool., Fac. des Sci., Univ. de Paris, 91 ORSAY, France a Experimental study of synchrony of mitosis in early embryogenesis. Leptinotarsa decem- lineata (Coleoptera) MAJORCA (MONTELEONE), Mrs. A. D.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy a Heterospecific andromerogones. (Amphibia) h Regeneration of the testes. (Anura) c The sex of hybrids. Bufo vulgaris x B. viridis (Anura) MAKHYA, Miss S. M.Sc. — Dept. of Zool., Presidency Coll.. CALCUTTA- 12, W.Bengal, India 111 MAKINEN (LONNBERG), Mrs. P.-L. M.S. — Dept. of Forensic Med., Univ. of Turku. Kiinamyllynkatu 10, TURKU 3, Finland a Biochemical characterization of enzymes appearing in early wound healing. Rattus spec, Cavia spec. (Rodentia) (in collaboration with J. RAEKALLIO) b Histochemical studies on bone regeneration (fracture healing). Rattus spec, Cavia spec. (Rodentia) (in collaboration with J. RAEKALLIO) MAKING, S. D.Sc, Prof. — Anim. Chromosomes Research Unit, Fac of Sci., Hokkaido Univ., North 10, West 8, SAPPORO, 060 Japan a Chromosome aberrations in patients with congenital disorders, with special regard to the relationship between karyological features and disease states. Homo sapiens (Primates) h Chromosome studies in spontaneous and induced abortions. Homo sapiens (Primates) c Virus-induced chromosome aberrations with special regard to teratogenesis and carcino- genesis. Homo sapiens (Primates) MAKINODAN, T. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. a Ontogeny and senescence of the immune system. Gallus gallus (Aves), Mus musculus (Rodentia) MALET, P. M.D. — Lab. d'Histol.-Embryol., Fac. de Med., Bd. Winston Churchill, B.P. 38, 63 CLERMONT-FERRAND, France a Cytology of neonatal liver; differentiation of intercellular junctions, characters of micro- bodies; histochemical differentiation. Mus musculus (Rodentia) (in collaboration with R. POURHADI and J. P. TURCHINI) MALIKOVA, Mrs. I. G. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. a Larval regeneration. Harmothoe imbricafa, Eteone longa (Polychaeta) MALIOVANOVA, Mrs. S. D. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Regeneration of myocardium. Oryctolagus cuniculus (Lagomorpha) MALONE, T. E. Ph.D., Prof. — Biol. Dept., American Univ. of Beirut, BEIRUT, Lebanon a Cytological and cytochemical studies of oocyte development with special reference to vitellogenesis and nuclear-cytoplasmic relationships. Blennius cristatus and other spp. (Blenniidae, Teleostei) h Cytological, cytochemical, and ultrastructural studies of the oocyte envelope. Blennius cristatus, B. sanguinolentus (Blenniidae, Teleostei) MALPOIX (HIGGINS). Mrs. P. M. Ph.D. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Comparative study of the synthesis of nuclear (chromatin) and cytoplasmic protein in embryonic liver in vitro (tissue culture, cell suspension), under the influence of erythropoietin and other hormones. Mus musculus (Rodentia) MALYUK, V. I. Cand.med.sci. — Dept. of Cytol. and Histogenesis, Inst, of Zool., Acad. of Sci. of the Ukraine, Vladimirskaya St. 55, KIEV 30, U.S.S.R. a Principles of genesis, and cytological peculiarities of some derivatives of mesenchyme: histogenesis of blood vessels. Domestic and laboratory animals (Mammalia), Homo sapiens (Primates) b The development of cellular and fibrillar structures of the vascular wall in ontogenesis. (Mammalia) MANCINO, G. Dr.Biol.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta 4, PISA, Italy a Development and functionality of the gonads in hybrids. (Urodela) b Lampbrush chromosomes. (Urodela) c Cytology. (Hirudinea, Annelida), (Opisthobranchia, Gastropoda) MANCUSO, V. D.Sc, Prof. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALERMO, Italy a The distribution of enzymes and other substances in the germ during development. (Invertebrata) h Ultrastructure of eggs during development. (Invertebrata) c Ultrastructural changes during oogenesis. (Invertebrata) MANDARON, P. M. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France MANELLI, H. Dr.Nat.Hist., Dr.Biol.Sci. — 1st. di Zool. dell'Univ., Viale Regina Elena 324 (al Policlinico), ROMA. Italy a Growth and differentiation of blood islands in vivo and in vitro. Gallus domes- ticus (Aves) (in collaboration with L. MASTROLIA) b Growth and differentiation in regeneration. Planaria spec. (Tmbellaria) (in collaboration with P. PASQUINI) c Differentiation and developmental correlations between hypophysis, adrenals and gonads (in vivo and in vitro). Gallus domesticus (Aves) d Induced polyspermy. Paracentrotus lividus (Echinoidea) MANFREDI ROMANINI, Mrs. M. G. Ph.D., Prof. — Inst, of Histol. and Embryol., Univ. of Pavia, Piazza Botta 10, 27100 PAVIA, Italy 112 a Histochemistry and enzymology of yolk sac and other membranes. Scyllium canicula (Selachii). Salmo irideus (Teleostei), Gallus domesticus (Aves) b Functional differentiation of larval gastric epithelium (manicotto ghiandolare di Ruffini) Rana esculenta (Anura) MANGIA, F. Dr.Biol.Sci. — 1st. di Zool. dell'Univ., Via Regina Elena 324, (al policlinico), ROMA, Italy a Embryonic erythropoiesis. Xenopus laevis (Anura) MANN, T. M.D., Ph.D., D.Sc. — A.R.C. Unit of Reprod. Physiol. & Biochem., Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIDGE, England • a Biochemistry of semen. (Mammalia) b Biochemistry of the male reproductive organs. (Mammalia) c Comparative biochemistry of reproduction. (Mollusca; Elasmobranchii) , various large domestic, small laboratory and wild animals (Mammalia) MANNER, H. W. Ph.D., Prof. — Dept. of Biol., Saint Louis Univ., 1402 South Grand Blvd., ST. LOUIS, Mo. 63104, U.S.A. a Organogenesis of carpals in regenerating forelimbs. Trifurus viridescens (Urodela) h The role of the radius in carpal formation in regenerating forelimbs. Ambysfoma opacum (Urodela) c Developmental biology. Coturnix coturnix japonica (Aves) d Factors influencing variability in developmental pattern. Coturnix coturnix japonica (Aves) e The action of developmental genes in the pre-neurula embryo. Rana pipiens (Anura) f The role of the endocrines in regenerating metamorphic animals. Triturus viridescens (Urodela) MANSUETO (BONACCORSO), Mrs. C. Dr.nat.sci. — 1st. di Zool., Univ. di Palermo. Via Archirafi 18, 90123 PALERMO, Italy a Investigations on development by use of radio-isotopes. (Ascidiae) h Incorporation of marked amino acids in nucleated and non-nucleated fragments of un- fertilized eggs and oocytes. (Ascidiae) c The action of cystein on development. Discoglossus pictus (Anura) d An analysis of the test cells in the oocytes and during embryonic development. (Ascidae) MANUILOVA, Mrs. N. A. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. MANUKHIN. B. N. Dr.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Catecholamines and their receptors in embryonic development. Gallus domesticus (Aves), Rattus norvegicus (Rodenfia) MANZOLI, F. A. M.D. — Inst, of Histol. and Gen. Embryol., Univ. of Bologna, Via Belmeloro 8, BOLOGNA, Italy MANZOLI (GUIDOTTI), Mrs. L. M.D. — Inst, of Histol. and Gen. Embryol., Univ. of Bologna, Via Belmeloro 8, BOLOGNA, Italy MARAUD, R. Dr.en Med., Dr.es Sci., Prof. — Lab. de Biol., Fac. de Med., Univ. de Bor- deaux, 33 BORDEAUX, France a Differenciation sexuelle. (Vertebrata) h Physiologic de la thyroide embryonnaire. (Vertebrata) MARCEL, R. — Lab. de Zool., Fac. des Sci., B.P. 36, 59-LILLE-Distribution, France a Etude in vivo et in v i t ro de la morphogenese au cours du developpement et de la regeneration. Sabella pavonina, Sabellaria spinulosa, Nereis diversicolor, Syllis amica, Eisenia foetida (Annelida) MARCHAND, C. R. Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal Leclerc, 25 BESAN^ON, France a Evolution histophysiologique de I'appareil reproducteur au cours de I'ontogenese chez des hybrides steriles. Cairina moschata x Anas platyrhynchos (Aves) (en collaboration avec L. GOMOT) MARCHISIO, P. C. M.D. — Dept. of Anat., Inst, of Histol. and gen. Embriol., Univ. of Turin, Corso M.D'Azeglio 52, 10126 TORINO, Italy a Chromatographic and electrophoretic studies of proteins in the optic lobes of eye deprived animals during pre- and postnatal development. Gallus domesticus (Aves) h The biochemical factors involved in the control of optic centre differentiation, with special attention to the role of retinal fibres (experimental investigation). Gallus domesticus (Aves) MARCHOK, Miss A. Ph.D. — Dept. of Zool., Univ. of Connecticut, STORRS, Conn. 06268, U.S.A. MARGALITH, I. — Dept. of Entomol. and Venomous Anim., The Hebrew Univ., JERU- SALEM, Israel MARGOLIS, G. M.D., Prof. — Dept. of Pathol., Dartmouth Med. School, HANOVER, N.H. 03755, U.S.A. a Virus-cell interaction, replication and differentiation. Cricetus auratus, Rattus natalensis, R. norvegicus, Mus musculus (Rodentia), Felis domestica, Mustela putorius furo (Carni' vora) 113 b Cerebellar hypoplasia induced by postnatal virus infections. Cricetus auratus, Rattus natalensis, R. norvegicus, Mtis musculus (Rodentia), Felis domestica, Mustela putorius fuco (Carnivora) c Hydrocephalus induced by postnatal virus infections. Cricetus auratus, Ratfus norvegicus, Mus musculus (Rodentia) MARIANO, Miss M. I. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Nuclear transplantation (early stages until neurulation). Bufo arenarum (Anuca) MARIN (LEWIN), Mrs. L. Dr.es Sci. — Lab. d'Embryol. exper. du Coll. de France et du C.N.R.S., 11 Place M. Berthelot, PARIS Ve, France • a Organogenese de I'estomac et du poumon: etude des substances morphogenes elaborees par les mesenchymes inducteurs. Gallus gallus (Aves) b Mise au point dune technique de culture organotypique des blastemes de regeneration. Amby stoma mexicanum (Urodela) c Morphogenese du poumon: 1. determinisme de I'apparition des ebauches (dissociation et reassociation, culture suivie de greffe). 2. moment d'apparition des structures specifiques des cellules de I'epithelium (ultrastructure). 3. influence de mesenchymes heterologues sur I'ultrastructure de I'epithelium (ultrastructure). Gallus gallus (Aves). (en collaboration avec Miss F. DAMERON) MARIN-PADILLA, M. M.D. — Dept. of Pathol., Dartmouth Med. School. HANOVER. N.H. 03755. U.S.A. MARINI, Miss M. Dr.Biol.Sci. — 1st. di Anat. Comp., Univ. di Modena. Via Berengario 14. 41100 MODENA, Italy a Growth and differentiation of the subcommissural organ. (Amphibia) b The differentiation of Rohon-Beard cells in normal development and in regeneration of the nervous system. (Amphibia) c The glycogen pattern in the developing nervous system. (Amphibia) MARINKOVIC, D. B.Sc. — Inst, of Nucl. Sci. 'Boris Kidrich ". BEOGRAD, Yugoslavia MARINKOVICH. V. A. M.D. — Dept. of Pediat., School of Med.. Stanford Univ., 300 Pasteur Drive, PALO ALTO, Calif. 94304, U.S.A. a Developmental immunochemistry. Gallus gallus (Aves), Oryctolagus cuniculus (Lago- morpha) h Immunoglobulins. Gallus gallus (Aves), Oryctolagus cuniculus (Lagomorpha) MARK, R. F. B.S. — Dept. of Physiol., Monash Univ., CLAYTON, Vict. 3168, Australia a Regenerating motor nerves and reinnervating muscle (descriptive, histochemical, experi- mental and electrophysiological). Astronotus ocellatus (Cichlidae), Carassius carassius (Cyprinidae, Teleostei) MARKjELOVA, Mrs. I. W. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. MARKERT, C. L. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower. Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. • a Gametogenesis and chromosome behavior. Rana pipiens (Anura) b Gamete maturation, fertilization, and early development. Mus musculus (Rodentia) c Multiplicity of homologous genes. Various spp. (Pisces) d Ontogeny of isozymic patterns of enzymes. Mas musculus (Rodentia), various spp. (Pisces) e Developmental genetics. Various spp. (Pisces) MARKMAN, B. Fil.lic. — Dept. of Zoophysiol.. Univ. of Gothenborg. GCTEBORG. Sweden MARKOVA, Mrs. L. N. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a The use of enzyme preparations for the analysis of the role of acetylcholine and biogenic monoamines in early embryogenesis. Strong ylocentrotus nudus, Patiria pectinifera (Echi' noidea) (in collaboration with G. A. BUZNIKOV) MAROTTI, G. Dr. — Inst, of Human Anat., Fac. of Med., Univ. of Bari, Policlinico. 70124 BARI, Italy a Histological and histochemical changes in the developing cornea of diminutive eye bulbs. Gallus domesticus (Aves) MARRARO (CARNAZZA), Mrs. M. L. — 1st. di Anat. Umana Normale, 2a Cattedra. Via Biblioteca 4, 95124 CATANIA, Italy a Mode of formation of the concentric bodies (epithelial pearls) during chorioallantoic membrane grafts. Gallus domesticus (Aves) h A new method of graft in chorioallantoic membrane. Gallus domesticus (Aves) c Liver homoplastic graft in chorioallantoic membrane. Gallus domesticus (Aves) MARRE, E. — 1st. di Sci. Botaniche dell'Univ., Cat. di Fisiol. Vegetale. Via Giuseppe Colombo 60, 20133 MILANO, Italy • MARSK, L. M.D. — Lab. of Teratol., Karolinska Inst., S-I04 01 STOCKHOLM 60, Sweden a Perinatal vascular changes in the digestive system. Rattus norvegicus (Rodentia) MARSLAND, D. A., Ph.D., Prof. — Marine Biol. Lab., Box 665, WOODS HOLE, Mass. 02543, U.S.A. 114 a Disintegration of mitotic spindle of dividing eggs on application of high hydrostatic pressure. Arbacia punctulafa (Echinoidea) b Stabilization of the mitotic structures by heavy water (D2O). (Echinoidea) c Re-inforcement of the anti-mitotic effects of colchicine by high pressure in dividing eggs. Lytechinus variegatus (Echinoidea) d A temperature analysis of how pressure reverses the anti-mitotic effects of heavy water in the dividing egg. Arbacia punctulata (Echinoidea) e Stability of microtubules in sperm cells exposed to high (10,000 psi) hydrostatic pressure. Arbacia punctulata (Echinoidea), Libinia emarginata, Homarus vulgaris (Decapoda) f Factors concerned with the initiation of cytoplasmic division following nuclear division. in cleavage. Arbacia punctulata (Echinoidea). g Effects of relatively low (1,000-4,000 psi) pressures on the early development (egg to pluteus stage). Arbacia punctulata (Echinoidea) MARSTON, J. H. Ph.D., M.R.C.V.S. — Physiol. Lab., Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3EG. England a Pre-implantation development: the physiology of implantation. (Mammalia) MARTHY. H.-J. Ph.D. — Lab. Arago, Fac. des Sci. de Paris. 66 BANYULS-sur-MER, France — untill springtime 1970: Coll. de France, Lab. d'Embryol. Exper., 49 bis Av. de la Belle Gabrielle, 94 NOGENT-sur-MARNE, France a In vitro culture of embryos and embryo-fragments. Loligo vulgaris (Cephalopoda) h Implantation and explantation of organ anlagen. Loligo vulgaris (Cephalopoda) c Investigations on induction. Loligo vulgaris (Cephalopoda) MARTIN, A. H. Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON, Wis. 53706. U.S.A. a Development and morphology of the central nervous system studied by light microscopy. (Vertebrafa) h Teratogenic effect of various techniques and agents upon the developing embryo. (Verte- brata) MARTIN, C. B., Jr. M.D., Prof. — Dept. of Obstet. and Gynecol., Med. Coll. of Georgia, Eugene Talmadge Mem. Hosp., AUGUSTA, Ga. 30902, U.SJ^. a Anatomical and radiological studies of placental circulation. Macaca mulatta, Homo sapiens (Primates) b Physiological studies of the uteroplacental and umbilical circulations. Macaca mulatta (Primates) MARTIN (FORGET), Mrs. C. S. Lic.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE. France a Etude des effets teratogenes obtenus par le paramino benzene sulfamide. Gallus gallus (Aves) b Mesonephros differentiation: culture of Wolffian duct with different mesenchymes. Gallus domesticus (Aves) MARTIN, R. P. Dipl.d'Etud.Approf. — Biol, et Ecol., Univ. de Caen, 14 CAEN. France a Renouvellement et differenciation des cellules de I'epithelium intestinal. Ambystoma mexicanum (Urodela) MARTlNEK, J. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Cytochemistry and electron microscopy of eggs. Mas rattus (Rodentia) , Homo sapiens (Primates) b The fine structure of the blastocyst. The role of nucleoli in early differentiation of blastodermic vesicle. Mus rattus ( Rodent ia). Homo sapiens (Primates) MARTINET. Mrs. M. Dr.es Sci. Sci. — Lab. d'Histol.-Embryol. B., Fac. de Med., 45 rue des Sts. Peres. PARIS Vie. France a Influence teratogene des infections rickettsiennnes. Mus rattus (Rodentia) MARTINOVIC. J. V. B.Sc. — Inst, of Nucl. Sci. "Boris Kidrich". BEOGRAD, Yugoslavia MARTINOVITCH. P. N. Ph.D. — Dept. of Exper. Histol. and Organ Cult.. Inst, of Nuclear Sci. "Boris Kidric". Vinca, P.O. Box 522, BEOGRAD, Yugoslavia • a The effect of injecting testicular DNA from a strain with colored feathers into embryos of a pure white strain. Gallus domesticus (Aves) MARTY, R. J. L. Dr.en Med., Dr.es Sci., Prof. — Lab. de Neurophysiol.. Fac. des Sci., Univ. de Montpellier. Place Eugene Bataillon, 34 MONTPELLIER. France a Neurophysiologie. 1. Maturation peri-natale du systeme auditif (stimulation electrique de la cochlee; stimulation tonale). 2. Maturation post-natale du systeme vestibulaire. Felis catus (Carnivora) b Neuroanatomie. 1. Developpement du thalamus (etude radio-autographique). 2. Maturation peri-natale du cortex cerebral. Rattus norvegicus, Felis catus (Mammalia) MARUOKA. S. M.Sc. — Lab. of Embryol., Fac. of Sci.. Osaka City Univ., Sugimoto-cho. Sumiyoshi-ku, OSAKA, Japan a Mechanism of action of sex hormone. Mus musculus (Rodentia) MARUYAMA, K. D.Sc, Prof. — Biol. Inst.. Coll. of Gen. Educ. Univ. of Tokyo. Komaba, Meguro-ku, TOKYO. Japan 115 MASCARENHAS, J. P. Ph.D., Prof. — Dept. of Biol. Sci., State Univ. of New York at Albany, ALBANY, N.Y. 12203, U.S.A. a Protein and RNA synthesis in the control of pollen tube development. Tradescantia paludosa (Commelinaceae) MASLOW, D. E. Ph.D. — Dept. of Exper. Pathol., Roswell Park Mem. Inst., BUFFALO, N.Y. 14203, U.S.A. a Formation of cytochimeric striated muscle from disaggregated embryonic cells of different classes and tissues. Gallus domesticus (Aves), Mus spec. (RodentiaJ h The effect of changes in the cell periphery caused by enzymatic treatments as determined by electrophoretic mobility on the formation of aggregates of disaggregated embryonic cells of different tissue origins. Gallus domesticus (Aves) MASNER, P. RNDr., CSc. — Dept. of Developm. Morphol., Inst, of Entomol., Czech. Acad, of Sci., 7 Vinicna, PRAHA 2, Czechoslovakia — till Sept. 1970: Zoecon Corp. for Appl. Insect Hormone Research, Biol. Branch, 975 California Ave., PALO ALTO, Calif. 94304. U.S.A. a Endocrine regulation of gonad morphogenesis during postembryonic and imaginal devel- opment, using synthetic analogues of these hormones, spec, of the juvenile hormone (cyto- logical, histological and histochemical techniques). Pyrrhocoris apterus (Heteroptera) MASON, J. Ph.D. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S.. 49 bis Ave. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Nutritional aspects of organotypic cancer culture b Embryonic antigens in tumors MASSART, C. M.D., Prof. — 1st. di Anat. e Istoembriol.. Univ. di Pisa, Via Roma 55, 56100 PISA, Italy MASTERS, C. J. Ph.D., Prof. — Graduate Dept. of Biochem., Brandeis Univ., WALTHAM, Mass. 02154, U.S.A. MASTROLIA, Miss L. Dr.Biol.Sci. — 1st. di Zool. dell'Univ., Viale Regina Elena 324 (al Policlinico), ROMA, Italy a Growth and differentiation of embryonic adrenal gland in vivo and in vitro. Gallus domesticus (Aves) b Growth and differentiation of blood islands in vivo and in vitro. Gallus domes- ticus (Aves) (in collaboration with H. MANELLI) MASUDA, H. D.Sc. — Dept. of Biol., Fac. of Sci., Konan Univ., Okamoto, Motoyama-cho, Higashi-nada-ku, KOBE, Japan a Structural changes of embryonic cells during cultivation. Cynops spp. (Urodela), Hynobius spp., Rana spp. (Anura) MASUI, Y. Ph.D., Prof. — Dept. of Zool., Univ. of Toronto, 25 Harbord St., TORONTO 5, Ont., Canada • a Nucleocytoplasmic interaction in oogenesis and early development. (Amphibia) b Analysis of proteins of embryonic cells. (Amphibia) c Studies of the induction problem in early development. (Amphibia) MATEJKA. M. Dr.Med., CSc. — 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 evolutionary morphology. (Amniota. incl. Homo sapiens) b The morphogenesis of the genital organs studied on the basis of experimental embryology. (Amniota) MATHEWS, M. B. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHI- CAGO. 111. 60637, U.S.A. a Biophysical and biochemical aspects of connective tissue components MATHUR, R. S. Ph.D. — Dept. of Zool., Univ. of Rajasthan, JAIPUR, India MATSUMOTO, J. D.Sc. — Dept. of Biol., Keio Univ., YOKOHAMA-Hiyoshi, Japan a Correlation between pigment formation and pteridine pigments during postembryonal stages. Carassius auratus (Teleostei) b Biochemical and morphological properties of the pigment granules of chromatophores in relation to function and differentiation. Xiphophorus helleri, Carassius auratus (Teleostei) MATSUNAGA, Miss Y. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan a Carbohydrate metabolism of the embryo. Anthocidaris spec, Pseudocentrotus spec, Hemi- centrotus spec. (Echinoidea) MATTINGLY, Miss E. Ph.D. — Dept. of Zool., Univ. of Georgia, ATHENS. Ga. 30601, U.S.A. a Variations in nucleic acid synthesis during larval development (autoradiography and biochemical methods). Rhynchosciara angelae (Diptera) MATTON (VAN LEUVEN), Mrs. M. D. — Dept. of Ophthalmol., Fac. of Med., Univ. Hosp., State Univ. of Gent, De Pintelaan. GENT, Belgium MATUSZEWSKI, B. Ph.D. — Dept. of Cytol., Fac. of Biol., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Oogenesis. (Cecidomyiidae, Diptera) h Cytochemical investigation on the origin of the mitotic spindle. (Cecidomyiidae, Diptera) 116 c Development and growth of egg follicles: 1. growth regulation of nurse nuclei. 2. origin of oosome material in the egg cell. (Cecidomyiidae, Diptera) MAUGER (GIRARD), Mrs. A. Dr. — Lab. de Zool.. Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE. France a Organogenesis of the vertebral column after treatment of gastrulae with hthium chloride and sodium thiocyanate. Pleurodeles waltlii (Urodela) b Microscopic and ultrastructural study of the effects of X-irradiation upon the devel- opment of the spinal pteryla and the cutaneous nerve pattern. Callus domesticus (Aves) c Autoradiographic study of the formation of the skin: contribution of various cell types to the dermis and epidermis. Gallus domesticus (Aves) MAURER. M L. B.A. — Div. of Biol. Sci.. Cornell Univ.. ITHACA, N.Y. H850. U.S.A. MAURY (GALLISSIAN). Mrs. M. F. Dipl.d'Etud.Sup.2 — Lab. de Morphogenet. Anim.. Fac. des Sci., 1 Place Victor Hugo, 13 MARSEILLE 3, France a Les problemes de dedifferenciation et de redifferenciation cellulaire. (Marine Porifera) MAY CHING, T. Dr. — Agronomy Dept., Oregon State Univ., CORVALLIS, Ore. 97331, U.S.A. a Physiology of seed development. ( Angiospermae ) MAYER T. C. Ph.D., Prof. — Dept. of Biol., Fac. of Liberal Arts and Sci.. Rider Coll.. TRENTON, N.J. 08602, U.S.A. MAZHUGA. P. M. Dr.biol.sci. — Dept. of Cytol. and Histogenesis, Inst, of Zool., Acad. of Sci. of the Ukraine, Vladimirskaya St. 55, KIEV 30. U.S.S.R. a Principles of genesis, and cytological peculiarities of some derivatives of mesenchyme: the peculiarities of endochondral and perichondral osteogenesis. Domestic and laboratory animals (Mammalia), Homo sapiens (Primates) h Onto- and phylogenesis of the blood-vascular trunks of the extremities. Domestic and laboratory animals (Mammalia). Homo sapiens (Primates) c The development of the blood-vascular bed of the joint capsule. Domestic and laboratory animals (Mammalia), Homo sapiens (Primates) d Histogenesis of blood vessels; comparative hemopoiesis. Domestic and laboratory animals (Mammalia), Homo sapiens (Primates) e The structural and functional differentiation of cells in chondrogenesis and osteogenesis. (Mammalia) MAZURKIEWICZ, M. M.S. — Ira C. Darling Center for Research, (Marine Lab.), Univ. of Maine. WALPOLE, Me. 04573, U.S.A. a Development from the egg through F2 generation. Laonereis culveri (Ercantia, Poly- chaeta) b Larval development and reproduction. Hydrobia totteni, H. salsa (Prosobranchia, Gastro- poda) c Larval development. Macoma balthica (Lamellibranchia) MAZZA, M. Dr.Nat.Sci. — 1st. di Zool. e Anat. Comp. delfUniv., Via A. Volta 4, PISA, Italy a External egg morphology, development. Nepa rubra (Heteroptera, Hemiptera) MECKLENBURG, C L. F. C. von Fil.lic. — Zootom. Dept., Zool. Inst., Univ. of Lund, Helgonavagen 3. S-223 62 LUND, Sweden MEDAWAR, Sir P. B. D.Sc. — Natl. Inst, for Med. Research, Mill Hill, LONDON N.W.7, England MELANDER, Y. Ph.D. — Inst, of Genet., Univ. of Lund, Solvegatan 29, 223 62 LUND, Sweden a Behaviour of chromosomes in relation to cell differentiation during embryogenesis; studies of living (cinematography) and fixed cells. (Planariidae, Turbellaria) , Tomopteds helgo- landica (Polychaeta), Calliphora erythrocephala (Diptera), (Mammalia) MELLINGER, J. Dr.es Sci. — Lab. de Zool. et d'Embryol. Exper., Univ. de Strasbourg, 12 rue de lUniversite. STRASBOURG, France MELTON, Ch. G., Jr. Ph.D. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a Messenger RNA ontogeny in embryonic development. Rana pipiens (Anura) MENGE, A. C. Ph.D., Prof. — Dept. of Obstet. and Gynecol., Center for Research in Reprod. Biol., Univ. of Michigan Med. Center, ANN ARBOR, Mich. 48104. U.S.A. a Effects of immune reactions against spermatozoa on the development of embryos. Ocycto- lagus cuniculus (Lagomorpha) MENKES, B. Dr.med., Prof. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a The role of normal and experimentally induced necrosis in teratogenesis b Cinematographical studies on growth and differentiation processes of the embryonic axial organs. Gallus domesticus (Aves) c The influence of exogenous factors on embryonic development; prenatal pathology. Gallus domesticus (Aves) d Organogenesis in the embryo. Homo sapiens (Primates) e Synthetic study on a collection of serial preparations of 3-30 mm embryos. Homo sapiens (Primates) 117 MENSCHIK, Z. M.D.. D.Sc, Prof. — Dept. of Anat., Georgetown Univ., 3900 Reservoir Rd.. N.W., WASHINGTON, D.C. 20007, U.S.A. MERCIER (PAROT), Mrs. L. Dr.es Sci. — Lab. d'Histol.-Embryol.A. Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France a Teratogenese par sulfamides hypoglycemiants, antimetabolites. Ratttts spec. (Rodizntia) (en collaboration avec H. TUCHMANN-DUPLESSIS) b Influence de la cortisone sur la gestation et le developpement foetal. Raftus spec. (Roden- tia) c Influence des alcaloides du Rauwolfia, de la reserpine et de la deserpidine, sur le develop- pement. Rattus spec. (Rodentia) (en collaboration avec H. TUCHMANN-DUPLESSIS) d Influence des neuroleptiques sur les malformations congenitales. Rattus spec, Mas spec, (Rodentia), Oryctolagus cuniculus (Lagomorpha) e Diabete experimental et grossesse. (Mammalia) f Influence des antimitotiques sur la gestation. (Rodentia) (en collaboration avec H. TUCH- MANN-DUPLESSIS) MERKER, H.-J. Dr.med. — Forschungsabt. fiir Elektronenmikroskopie und II. Anat. Inst. der Freien Univ. Berlin, Kon.-Luise-Str. 15, 1 BERLIN 33, W.Germany MERKLE, U. Dr.med., Prof. — Anat. Inst, der Univ. Erlangen-Niirnberg, Krankenhaus- strasse, 852 ERLANGEN, W.Germany a Spermatogenese und Sertoli-Zellen. Rattus spec (Rodentia) MERTZ, M. Dr.med. — Anat. Inst, der Univ., Osterbergstr. 3, 74 TUBINGEN W.Germany MESSAGE, M. A. Ph.D. — Anat. School, Univ. of Cambridge, Downing St., CAMBRID- GE CB2 3DY. England a Development of muscle, primarily with histochemical techniques. Xenopus laevis (Anura), Mus musculus, Rattus norvegicus (Rodentia) MESTRINER, M. — Dept. of Genet., Univ. of Sao Paulo, P.O. Box 301, RIBEIRAO PRETO, S.P., Brazil METZ, C. B. Ph.D. — Inst, of Molec Evolut., Univ. of Miami, 521 Anastasia Ave., CORAL GABLES, Fla. 33124, U.S.A. • MEUSY, J.-J. D.E.S. — Lab. d'Evolut., Fac. des Sci. de Paris, 105 Bd. Raspail, 75 PARIS 6, France a Correlations endocrines. Orchestia gammarella (Amphipoda), Carcinus maenas (Decapoda, Crustacea) h Ultrastructure des glandes endocrines. (Malacostraca, Crustacea) MEYER, D. B. Ph.D. — Dept. of Anat., Wayne State Univ., 1400 Chrysler Freeway, DETROIT, Mich. 48207, U.S.A. a Morphogenesis and developmental histochemistry of embryonic eye. Gallus domesticus (Aves) b Histochemical studies of gonadal development. Gallus domesticus (Aves) c Prenatal ossification of the skeleton. Homo sapiens (Primates) MEYER, G. F. Dr.rer.nat. — Max-Planck Inst, fiir Biol., Abt. Beermann, Spemann-Str. 34, 74 TUBINGEN, W.Germany MEZGER-FREED, Mrs. L. Ph.D. — Inst, for Cancer Research, 7701 Burholme Ave., PHILADELPHIA, Pa. 19111, U.S.A. a Genetics of haploid embryo cell lines including analysis by nuclear transfer. Rana pipiens (Anura) (in collaboration with J. FREED) MICCIARELLI (SBRENNA), Mrs. A. Dr.Biol. — 1st. di Zool., Univ. di Ferrara, Via Previati 24, 44100 FERRARA, Italy MICHAEL, M. I. Ph.D. — Dept. of Zool., Fac of Sci., Alexandria Univ.. Moharram Bey, ALEXANDRIA, Egypt, U.A.R. — temporarily: Zool. Dept., Fac. of Agric and Vet. Sci., Univ. of Mosul, MOSUL, Iraq a The development of the olfactory organs. Bufo regularis (Anura) h Experimental analysis of the development of the cephalic ganglia and other derivatives of the head neural crest. Ambystoma mexicanum (Urodela) c The development of the urogenital system. Bufo regularis (Anura) (in collaboration with S. N. SEDRA and S. KHALIL) d Studies on hind limb regeneration. Bufo regularis (Anura) MICHALOWSKI, J. f Ph.D. — Dept. of Gener. Biol., Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE 8, Poland (deceased) MICLEA, Mrs. C. Dr.Biol.Sci. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Effects of cytostatics on embryonic development. Gallus domesticus (Aves) MIDDLETON, C. A. B.Sc — Dept. of Zool. and Comp. Anat.. Univ. Coll. London, Gower St., LONDON W.C.I, England a A study of the locomotion and behaviour of epithelial cells in tissue culture. Gallus gallus (Aves), Mus musculus (Rodentia) MIGLIORINI (BRUSCHELLI), Mrs. G. Dr.Sci.Biol. — 1st. di Biol. Gener., Fac. di Med., Via del Giochetto, 06100 PERUGIA, Italy 118 a Neurosecrezione durante lo sviluppo embrionale. Dugesia lugubris (Turbellaria) , Allolo- bophoca caliginosa (Oligochaeta) b Antibiotici c sviluppo embrionale. Bufo vulgaris (Anura) MIKAMI, Y. Ph.D., M.D., Prof. — Dept. of Anat., School of Med., Mie Pref. Univ., 100, Torii'Cho. TSU, Japan • a Etiology of some congenital anomalies. Mtts molossinus albinixs (Rodentia) b Developmental mechanism of entodermal organs c Experimental analysis of Wolffian lens regeneration MIKAMO, K. D.Sc, Prof. — Lab. d'Embryol. et de Cytogenet., Clin. Univ. de Gynecol, et d'Obstet., 20 rue Alcide Jentzer, 1205 GENEVE 4, Switzerland a Sex ratio in fetuses from induced and from spontaneous abortions. Homo sapiens (Pri- mates) b Chromosomes of various fetal stages, normal and pathologic. Homo sapiens (Primates) c Chromosomes and genes in sex-reserved animals. Xenopus laevis (Anura) d Pathological development of the testis (quantitative analysis of spermatogonical deficieny in chromatin-positive Klinefelter syndrome at early postnatal stages). Homo sapiens (Primates) e Degenerative changes in fetal membranes (a histological study in relation to the physio- logy of onset of labor). Homo sapiens (Primates) i Intrafollicular overripeness of oocytes an an etiologic factor of malformation and nondis- junction of chromosomes with special reference to abnormal chromosomal behavior in meiotic phases. Xenopus laevis (Anura), Oryctolagus cuniculus (Lagomorpha) g Anatomic studies of normal and pathologic embryonic development. Homo sapiens (Pri- mates) h Effects on embryonic development of fertility regulating agents; chromosomal and anat- omic studies. Homo sapiens (Primates) i Incidence of sex chromosomal anomalies in newborn infants and the etiology of the anomalies. Homo sapiens (Primates) MIKHAILOVA, Ms. I. G. Dr.biol.sci. — Dept. of Embryol., Murmansky Sea-Biol. Inst., Acad, of Sci., DALNII ZELENZI, U.S.S.R. MIKI-NOUMURA. Mrs. T. Ph.D. — Inst, of Molec. Biol., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, 464 Japan a The mitotic apparatus protein of the egg. Hemicentrotus pulcherrimus. Pseudocentrotus depressus. Anthocidaris crassispina (Echinoidea) h Cell division of the egg. Hemicentrotus pulcherrimus. Pseudocentrotus depressus, Antho- cidaris crassispina (Echinoidea) c An actin-like egg protein. Hemicentrotus pulcherrimus, Pseudocentrotus depressus, Anthoci- daris crassispina, Temnopleurus toreumatics (Echinoidea) MILAIRE, J. M.D. — Lab. d'Anat. et d'Embryol., Fac. de Med. de I'Univ., 97 rue aux Laines, BRUXELLES. Belgium • MILKMAN, R. D. Ph.D., Prof. — Dept. of Zool., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Developmental biology, classical and physiological genetics. Botryllus schlosseri (Stolido- branchia, Tunicata) b Developmental biology, genetics. Drosophila melanogaster and other spp. (Dipfera) MILLER O. L., Jr. Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y. OAK RIDGE, Tenn. 37830, U.S.A. a The relationship of fine structure to RNA, DNA, and protein metabolism in the lampbrush chromosomes, nucleoli, and nucleoplasm of oocytes (standard sectioning techniques, micro- manipulation, enzymatic digestions, phase contrast microscopy, electron microscopy, auto- radiography). (Amphibia) MILLER, T. J. Ph.D. — Dept. of Zool.. Rutgers Univ., 195 University Ave., NEWARK, N.J. 07102, U.S.A. a The mechanism of cleft palate formation, elucidated by: 1. possible reduction of incidence, 2. biochemical and histochemical changes, wrought by various teratogens. Mus musculus (Rodentia) MILLINGTON, W. F. Ph.D. — Dept. of Biol., Marquette Univ., 530 North 15th St.. MILWAUKEE, Wis. 53233, U.S.A. a Development at the shoot apex, and regulation of form in the leaf and shoot. Proser- pinaca palustris, Monstera spp., Parthenocissus vitacea, Ulex europaeus b Development in coenobial forms. Pediastrum spp. (Chlorophyceae) MILLONIG, G. M.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy a Electron microscopic studies on early development. Paracentrotus lividus, Arbacia lixula (Echinoidea) b Fine structure changes after electric activation. Paracentrotus lividus. Arbacia lixula (Echinoidea) c Electron microscopic histochemistry of alcaline phosphatase during ecibryogenesis. Para- centrotus lividus, Arbacia lixula (Echinoidea) 119 MILLS, K. S. Ph.D., Prof. — Dept. of Zool., Univ. of Oklahoma, 730 South Oval, Room 222, NORMAN, Okla. 73069. U.S.A. a Accelerated growth and orientation of tissue culture cells. MILLS, S. E. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Cahf. 92037, U.S.A. a Regulatory mechanisms in cultured cells. (PlantaeJ MILMAN, L. S. Cand.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133. U.S.S.R. MINAFRA. S. Dr. — 1st. di Istol. ed Embriol.. Univ. di Palermo. Via Archirafi 18, 90123 PALERMO. Italy MINELLI, G. Dr.nat.sci., Prof. — 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, BOLOGNA (103), Italy a Nervous system. (Vertebrata) MINGANTI, A. Dr., Prof. — 1st. di Anat. Comp., Univ. di Genova, Via Balbi 5, 16126 GENOVA, Italy • a Enzyme activities in eggs and embryos. Balanus spec, Lepas spec. (Cirripedia, Crustacea) MINTZ, Miss B. Ph.D. — Inst, for Cancer Research, 7701 Burholme Ave., PHILADEL- PHIA, Pa. 19111, U.S.A. • a Gene control of differentiation in allophenic animals with two genotypic populations of cells. Mus musciilus (Rodentia) MISENHEIMER, H. R. M.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. a Anatomical and radiological studies of circulation in the maternal placenta. Macaca mulatta. Homo sapiens (Primates) (in collaboration with Miss E. M. RAMSEY) MITASHOV, V. I. — Lab. of Developm. Cytogenet.. Inst, of Developm. Biol.. Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133. U.S.S.R. MITCHELL, J. T. Ph.D. — Dept. of Anat., State Univ. of New York. 766 Irvmg Ave.. SYRACUSE, N.Y. 13210, U.S.A. a Effect of chemical compounds on pre-implantation stages in vivo and in v' i t r o, with emphasis on developmental morphology and teratology. Mus musculus (Rodentia) h Studies on the neoplastic conversion of embryo cells cultured in vitro utilizing cytogenetics and histochemical approaches. Mus musculus (Rodentia) MITCHISON, J. M. Sc.D., Prof. — Dept. of Zool., Univ. of Edinburgh. West Mains Rd., EDINBURGH 9, Scotland, U.K. a Developmental changes during the cell cycle, with special reference to enzyme synthesis. Schizosaccharomyces pombe (Saccharomycetales) MITOLO, V. M.D. — Inst, of Human Anat., Fac. of Med.. Univ. of Bari, Policlinico, 70124 BARI. Italy a Quantitative changes of spinal ganglia and spinal cord after increase of the peripheral field of innervation. Callus domesticus (Aves) MITRA, B. N. Ph.D. — Cell Research Unit, Dept. of Zool., Univ. of Calcutta, 35 Ballygunje Circular Rd., CALCUTTA- 1 9, India MITRA, J. M.Sc. — Dept. of Zool., Presidency Coll.. CALCUTTA-12. W.Bengal. India MITRA. Miss T. M.Sc. — Dept. of Zool., Presidency Coll., CALCUTTA-12. W.Bengal. India MIYA. K. D.Sc, Prof. — Inst, of Appl. Entomol., Fac. of Agric. Iwata Univ.. Ueda 3-18. MORIOKA, Japan MIYAHARA. E. M.Sc. — Dept. of Biol.. Fac. of Sci., Kyushu Univ., Hakozaki, FUKUO- KA, 812, Japan a Regulation of ribosomal RNA synthesis during embryonic development. Xenopus laevis (Anuca) MIZELL. M. Ph.D., Prof. — Dept. of Biol., Tulane Univ.. NEW ORLEANS. La. 70118. U.S.A. a Induced limb regeneration. Didelphis virginiana (Marsupialia) h Effects of regenerating appendages on Lucke tumor (renal adenocarcinoma): tumor dif- ferentiation. Rana pipiens (Anura) c Infectious nucleic acids (Herpes type virus associated with Lucke tumor) as differentiating agents. Rana pipiens (Anura) MIZUNO, T. Dr., Prof. — Lab. of Anim. Nutr., Fac. of Agric, Kobe Univ., 1 Rokkodai- cho, Nada-ku, KOBE, Japan a Biochemical studies on the change from proliferation to cell enlargement in embryonic muscle cells. Callus domesticus (Aves) MOAV, B. Ph.D. — Dept. of Zool.. Tel-Aviv Univ., 155 Herzl St.. TEL-AVIV. Israel a Histone synthesis in eggs. (Echinoidea) MOCHIDA. O. B.Agr. — Dept. of Plant Pathol. & Entomol., Kyushu Natl. Agric. Exper. Station, Nishi 496, Izumi. CHIKUGO-shi, Fukuoka-ken, 833 Japan a Morphological and physiological studies on oogenesis. Nilaparvata lugens (Delphacidae, Homoptera) h Ecological and anatomical studies on reproduction. Javesella pellucida (Delphacidae. Homoptera) 120 MODAK. S. P. Dr.es Sci.Biol. — Depts. of Microbiol, and Biochem., Med. Center, Univ. of Kentucky, LEXINGTON, Ky. 40506. U.S.A. a Studies on lens induction. Galliis domesticus (Aves) h Cellular replication during development and growth of lens. Gallus domesticus (Aves) (in collaboration with Miss B. J. PERSONS) c Nuclear degeneration during the terminal lens fiber cell differentiation in developing lens; histological and microspectrophotometric analysis. Gallus domesticus (Aves) (in collab- oration with Mrs. S. PERDUE) d Analysis of the template activity of DNA during the terminal lens cell differentiation. Gallus domesticus (Aves) (in collaboration with F. J. BOLLl.IM and R. C. von BOR- STEL) c Analysis of the primer activity of DNA during the terminal lens cell differentiation. Gallus domesticus (Aves) (in collaboration with F. J. BOLLUM) f Temporal and spatial patterns of cell replication and nuclear degeneration during lens development and growth; computer analysis of mathematical models. Gallus domesticus (Aves) (in collaboration with V. R. R. UPPULURI and VV. E. LEVER) g Analysis of the physico-chemical properties of DNA in differentiating cells. Tciturus viridescens (ilrodela), Gallus domesticus (Aves), Mus musculus, Rattus raftus (Rodentia). Homo sapiens (Primates) (in collaboration with F. J. BOLLUM, J. SISKEN, Miss G. DONNELLY, S. KARASAKI and H. TRAURIG) h The pattern of RNA synthesis during lens development. Gallus domesticus (Aves) (in collaboration with Miss B. J. PERSONS) MOE, H. M.D., Prof. — Dept. of Anat., Univ. of Copenhagen, 63 Norre Alle, COPEN- HAGEN 0, Denmark MOFFAT, D. B. M.D. — Dept. of Anat., Univ. Coll. of S. Wales & Monmouthshire, Newport Rd., CARDIFF, Wales, U.K. (no embryological work in progress) MOHLER, J. D. Ph.D., Prof. — Dept. of Zool., LIniv. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a The action of different genes which affect a quantitative character (crossveinlessness) as modifiers of developmental responses (phenocopies) to heat shock at early pupal stages. Drosophila melanogaster (Diptera) MOHRI, H. D.Sc, Prof. — Biol. Inst., Coll. of Gen. Educ, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan MOLD, Miss K. M.D. — Inst, of Histol. and Embryol., Med. Univ., Tuzolto u. 58, BUDAPEST IX, Hungary a Teratogenesis. Gallus domesticus (Aves), Rattus rattus (Rodentia) MOLINARO, M. M.D. — 1st. di Istol. ed Embriol. Gener., Univ. di Roma, ROMA. Italy a Macromolecular synthesis in the early development of the embryo. Mus musculus (Roden- tia) h Heterogeneity of tRNA during embryonic development. Paracentrotus lividus (Echinoidea) MOLLENHAUER, H. H. Ph.D. — Charles F. Kettering Research Labs., 150 E. South College St., YELLOW SPRINGS. Ohio 45387, U.S.A. a Study of ultrastructural changes during development and germination of the embryo. Zea mays MOMENT, G. B. Ph.D., Prof. — Dept. of Biol.. Goucher Coll., BALTIMORE, Md. 21204, U.S.A. MONESI, V. M.D., Prof. — 1st. di Istol. ed Embriol. Gener., Univ. di Roma, ROMA, Italy a Spermatogenesis and cell differentiation. Mus musculus (Rodentia) h Role of histones in cell differentiation and cell function (autoradiography and bio- chemistry). Mus musculus (Rodentia) c Molecular mechanisms of early embryonic development from fertilization to blastulation. Mus musculus (Rodentia) MONIE, I. W. M.B., Ch.B., Prof. — Dept. of Anat., School of Med., Univ. of California, SAN FRANCISCO, Calif. 94122, U.S.A. a Morphological, histochemical and organ culture studies on congenital malformations of the cardiovascular, urogenital, and nervous systems induced by teratogenic agents. Rattus rattus (Rodentia) MONNICKENDAM, Miss M. A. M.Sc. — School of Biol. Sci.. Univ. of East Anglia, Wilberforce Rd., NORWICH, NOR 88C, England a Nuclear-cytoplasmic interaction in early development. Xenopus laevis (Anura) b Control of cell division. Xenopus laevis (Anura) MONROY, A. M.D., Prof. — Lab. of Molec. Embryol., Via Toiano 2, 80072 ARCO FELICE, Napoli, Italy « a Protein synthesis during development. (Echinoidea) MONTERO. C. M.D. — Dept. de Anat.. Cat. de Anat. II, Fac. de Med., CADIZ, Spain MONTERO. E. Med.Dr. — Inst. F. Oloriz, Fac. de Med., Univ. de Granada, GRANADA, Spain MOOG. Miss F. Ph.D., Prof. — Dept. of Biol., Washington Univ., ST. LOUIS, Mo. 63130, U.S.A. • 121 a Development of enzyme systems in the embryo. Callus domesticus (Aves), (Mammalia) b Role of the pituitary-adrenal axis in fetal and juvenile development. (Aves; Mammalia) c Chromotographic, electrophoretic and immunochemical studies of the nature of the alkaline phosphatases of the small intestine, fetal to mature stages. Mus musculus (Rodentia) MOOKERJEE, Mrs. A. Ph.D.. — Dept of Zool., Presidency Coll., CALCUTTA-12, W. Bengal, India MOOKERJEE, S. Ph.D., Prof. — Dept. of Zool.. Presidency Coll.. CALCUTTA-12, W. Bengal, India • MOOR, R. M. B.Sc. — A.R.C. Unit of Reprod. Physiol & Biochem., Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIDGE, England a The physiological relationship between the early stages of embryonic development, the uterus and the corpus luteum. Ovis aries. Bos taurus, Sus scrofa (Ariiodactyla) MOORE. Mrs. B. C. Ph.D. — Dept. of Life Sci., Univ. of California, RIVERSIDE, Calif. 92502, U.S.A. • a Chromosomal analysis of lethal racial hybrid embryos. Rana pipiens (Anuca) MOORE, J. A. Ph.D., Prof. — Dept. of Life Sci., Univ. of California, RIVERSIDE. Cahf. 92502, U.S.A. • a Development of diploid and haploid racial hybrids. Rana pipiens (Anura) MOORE, W. J. Ph.D. — Dept. of Oral Pathol., The Dental School, St. Mary's Row, BIRMINGHAM 3, England MOORES, G. R. B.Sc. — Dept. of Cell Biol, Univ. of Glasgow, GLASGOW W.2, Scot- land, U.K. a Surface properties and behaviour of embryonic cells. Gallus gallus (Aves) MORAlTOU (APOSTOLOPOULOU). Mrs. M. Ph.D. — Zool. Lab. and Museum, Fac. of Sci., Univ. of Athens, Panepistimiopolis (Kouponia), ATHENS (621). Greece MORATA, G. M.Sc. — Sect. Developm. Genet., Inst, of Genet, and Anthropol., Velazquez 144. MADRID 6, Spain a Kinetics of DNA replication during the mitotic cycle in imaginal disc cells. Drosophila melanogaster (Diptera) b Study of the development fate of chromosome rearrangements following somatic re- combination. Drosophila melanogaster (Diptera) MOREAU, R. — Lab. de Physiol. Gener., Fac. des Sci. de Bordeaux, Avenue des Facultes, 33 TALENCE, France a Metabolisme du developpement (mues-metamorphose-diapause). Pieris brassicae (Lepi- dopfera) MORETTI. R. L. Ph.D. — Dept. of Life Sci.. Univ. of California. RIVERSIDE. Calif. 92502, U.S.A. a Interaction of the trophoblast and endometrium during implantation. Lepus domesticus (Lagomocpha), Mus musculus (Rodentia) b Mechanisms involved in fertilization. Ascaris lumbricoides (Nematoda) MORI, H. D.Agr., Prof. — Dept. of Biol., Keio Univ., YOKOHAMA-Hiyoshi. Japan a Insecticide action on eggs, larvae and adults. (Insecta) MORI. Y. M.A., Prof. — Dept. of Biol.. 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) MORRILL, G. A. Ph.D. — Dept. of Physiol.. Albert Einstein Coll. of Med., Yeshiva Univ., 1300 Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. a The mechanism of activation of the egg. 1. The role of Ca++ in regulating membrane permeability. 2. The role of Na+ pump and phosphate exchange. 3. The relationship between changes in cytoplasmic and nuclear binding of Na+. K+. Ca++ and Mg + + and the changing metabolic states at ovulation, fertilization and first cleavage. Rana pipiens (Anura) h The ionic events that occur during blastula formation which are associated with morpho- genesis and cell differentiation: the transport of cytoplasmic Na+ into the blastocoel. 1. Mapping the changing electric fields at the surface of the developing embryo and cor- relating these fields with known patterns of cell migrations. 2. Monitoring the rate of Na+ release in each of the germ layers. 3. Assaying for vasopressin-like hormone activity in blastula extracts. Rana pipiens (Anura) MORRILL. J. B. Ph.D. — Dept. of Biol.. New College, SARASOTA, Fla. 33578. U.S.A. a Effects of metal ions on development. Lymnaea stagnalis, L. palusfris (Pulmonata, Gastropoda) b Chemical differentiation of eggs and chemical composition of egg capsules. Lymnaea spec. (Pulmonata, Gastropoda) c Analyses of ooplasmic segregation. (Pulmonata, Gastropoda) ^^ MORRIS. B. Ph.D. — Dept. of Zool.. Univ. of Nottingham. NOTTINGHAM, England a Antibody absorption by neonatal animals. Erinaceus eucopaeus (Insectivora), Rattus noc- vegicus (Rodentia) b Gastric and intestinal development (postnatal). Erinaceus europaeus (Insectivora) 122 c Development of pituitary and reproductive organs (postnatal). Erinaceus europaeus (Insectivora) MORRIS. Miss I. D. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLA- HABAD-2, India a Quantitative studies of various metabolites during metamorphosis. Philosamia ricini (Lepidoptera). Musca nebulo, Sarcophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT, D. M. LAL and R. VARMA) b Quantitative studies of certain metabolites and enzymic studies on the fat body during larval and pupal development. Philosamia ricini (Lepidoptera) (in collaboration with Mrs. R. PANT. D. M. LAL and R. VARMA) MORRIS, I. G. Ph.D. — A.R.C. Unit of Embryol., Dept. of Zool., Univ. Coll. of N. Wales, BANGOR. Caernarvonshire, Wales, U.K. MORRIS. Miss V. B. Ph.D. — Dept. of Anat. and Embryol., Univ. Coll., Gower St., LONDON W.C.I, England a Autoradiographic study of the time preceding differentiation in different kinds of receptors in the retina. Gallus domesticus (Aves) MOSCONA, A. A. Ph.D., Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, 1101 East 57th St., CHICAGO, 111. 60637, U.S.A. • a Cellular and molecular aspects of embryonic differentiation MOSCONA. M. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637. U.S.A. a Cellular and molecular aspects of embryonic differentiation MOSER, Mrs. G. C. Ph.D. — Dept. of Genet., Albert Einstein Coll. of Med., Yeshiva Univ., Eastchester Rd. & Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. a Developmental physiology. Mus musculus (Rodentia) h Developmental genetics. Mus musculus (Rodentia) c Developmental pathology. Mus musculus (Rodentia) MOSSMAN, H. W. Ph.D.. Prof. (Emer.) — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON, Wis. 53706. U.S.A. • a Comparative morphology of the fetal membranes and reproductive tracts. (Mammalia) MOTOMURA, I. D.Sc, Prof. — Lab. of Embryol., Inst, of Biol., Tohoku Univ., SENDAI, Japan • MOTTET, N. K. M.D., Prof. — Dept. of Pathol., Univ. of Washington Med. School, BB232. Univ. Hosp., SEATTLE. Wash. 98105, U.S.A. a The mechanisms regulating ontogenetic metaplasia in the esophagus. Gallus domesticus (Aves), Homo sapiens (Primates) b Ultrastructural features of necrosis as an ontogenetic process. Gallus domesticus (Aves), Homo sapiens (Primates) c Morphologic changes in the talpid^ genetic anomaly. Gallus domesticus (Aves) MOULTON, J. M. Ph.D., Prof. — Dept. of Biol., Bowdoin Coll., BRUNSWICK, Me. 04011, U.S.A. a Changes in the Mauthner cells and axons, and in the thyroid gland during spinal cord regeneration after tail amputation. Diemyctylus viridescens (Urodela) MOVTCHAN, Mrs. N. A. Cand.biol.sci. — Dept. of Embryol., Leningrad Univ., Mende- leevsky St. 5, LENINGRAD B464, U.S.S.R. a Immunity of the embryo. Salmo salar (Teleostei), Testudo horsfieldi (Chelonia) MOYER, F. H. Ph.D. — Dept. of Biol., Univ. of Missouri, ST. LOUIS, Mo. 63121, U.S.A. MOYSE. J. Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWANSEA, Glamorganshire, Wales, U.K. MUCHMORE, W. B. Ph.D., Prof. — Dept. of Biol., Coll. of Arts and Sci., Univ. of Rochester, ROCHESTER. N.Y. 14627, U.S.A. a Development and growth of myotomes. Ambystoma spec. (Urodela) MUELLER, G. C. M.D., Ph.D., Prof. — McArdle Lab. for Cancer Research, Univ. of Wisconsin, 450 N. Randall Ave., MADISON, Wis. 53706. U.S.A. a Growth control mechanisms in cells. (Mammalia) MUGNAINI, E. Cand.med. (M.D.) — Anat. Inst., Univ. of Oslo, Karl Johansgatan 47. OSLO, Norway MUIR, A R. M.D., Prof. — Dept. of Anat., Royal (Dick) School of Vet. Studies, Univ. of Edinburgh, Summerhall, EDINBURGH 9, Scotland, U.K. a Development of cardiac muscle cells, studied on myocardium dissociated by Ca++ de- privation and chelation MULAREK, Mrs. O. M.D. — Dept. of Neurol., Med. Acad., Przybyszewskiego St. 49. POZNAN, Poland a Influence of ionizing radiation on the developing central nervous system. MULHERKAR, Mrs. L. Ph.D., Prof. — Dept. of Zool, Univ. of Poona, Ganeshkind, POONA-7, India • a Transplantations of embryonic tissues. Gallus spec. (Aves) h Effects of carcinogenic substances on the embryo. Catotes versicolor (Lacectilia) c Experimental embryology. Planorbis spec. (Pulmonata, Gastropoda) d Studies on -SH groups and embryonic induction. Gallus spec. (Aves) 123 MULLER, A. J. Dr. — Inst, fiir Kulturpflanzenforsch. der Deutschen Akad. der Wissensch. zu Berlin. GATERSLEBEN. Kr.Aschersleben. East.Germany a Genetical and physiological studies of embryonic and seedling lethal mutants. Acabidopsis thaliana (Cruciferae) MULLER, M. D.Sc. — Inst, of Biol.. Univ. of Zagreb, Salata, ZAGREB, Yugoslavia a Regulation of compensatory growth. Rattus norvegicus (Rodentia) (in collaboration with Miss L. HOFMAN) MULLER, W. A. Dr.rer.nat. — Zoophysiol. Inst, der Univ., Holderlinstr. 12, 74 TUBIN- GEN, W.Germany MULNARD, J. G. M.D., Prof. — Lab. d'Anat. et d'Embryol. Humaines, Univ. libre de Bruxelles, 97 rue aux Laines, BRUXELLES 1. Belgium • MUN, A. M. Ph.D., Prof. — Dept. of Zool., Univ. of Maine, ORONO, Me. 04473, U.S.A. a Enhancement of growth of host spleens following chorio-allantoic grafts of homologous tissues. Gallus gallus (Aves) b Induction of immunological tolerance by intracoelomic grafts in the 4-day embryo. Gallus gallus (Aves) c Growth stimulation of embryonic spleen graft by adult spleen across a filter membrane. Gallus gallus (Aves) MUNROE. M. H. — Dept. of Biol.. Div. of Biol. Sci., Univ. of Chicago, CHICAGO. 111. 60637, U.S.A. a Plant development. MUNTZ. Miss L. Ph.D. — Dept. of Zool., Fac. of Sci., Univ. of Reading, READING RGl 5AQ, Berks., England a Comparative studies on the structural development of nerves and muscles. Xenopus laevis, Eleutherodacfylus mariinicensis (Anuca) b Electron microscopic investigation of muscle degeneration. Eleutherodacfylus martinicensis (Anura) MURAKAMI. U. M.D., D.Med. Sc, Prof. — The Research Inst, of Environm. Med.. Nagoya Univ., Furo-cho. Chikusa-ku, NAGOYA. 464 Japan a Effects of ionizing radiations upon embryos of different species. Mus musculus, Rattus norvegicus (Rodentia) (in cojlaboration with Y. KAMEYAMA, K. HOSHINO. and Miss T. NAKAYAMA) b Morphogenesis of exencephalia and its allied conditions. Rattus norvegicus (Rodentia) (in collaboration with K. HOSHINO) c Morphogenesis of spina bifida and its allied conditions. Rattus norvegicus (Rodentia) (in collaboration with K. HOSHINO) d Mechanisms for the differential radiosensitivity of immature brain tissue, immediate and late effects. Mus musculus, Rattus norvegicus (Rodentia) MURAMATSU, S. D.Sc. — Div. of Radiat. Hazards, Natl. Inst, of Radiol. Sci., Anagawa 4-9, CHIBA. Japan a Morphological and functional effects of radiation on the embryo. Mus musculus (Rodentia) MURASHOVA, Miss A. I. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R.. Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. MURRAY, Mrs. M. R. — Dept. of Anat., Coll. of Phys. and Surg., Columbia Univ., 630 W. 168th St., NEW YORK. N.Y. 10032, U.S.A. • MUSY, J. P. M.D. — Inst, of Histol. and Gen. Embryol., Univ.-Perolles. 1700 FRIBOURG. Switzerland a Teratogenetic action of ubiquinone in o v o and in vitro. Gallus domesticus (Aves) h Cytophotometric studies on embryonic fibroblasts: DNA content as a function of oxygen concentration. Gallus domesticus (Aves) MUTH, F. W. Dr.rer.nat. — Inst, fiir Entw.physiol., Univ. zu Koln, Gyrhofstr. 17, 5 KOLN- Lindenthal, W.Germany a Development of the eye pigmentary system and gene controlled pigment synthesis during pupal stages (photometry and chromatography of pigments). Ephestia kiihniella (Lepi- doptera) MUTHUKKARUPPAN. V. Ph.D. — Annamalai Univ., ANNAMALAINAGAR, P.O., India a Origin and differentiation of immunocompetent cells and control mechanisms in the devel- opment of immune capacities (tissue culture). Calotes versicolor (Lacertilia) MUTOLO. V. M.D. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy a Cell interaction in embryos. Paracentcotus lividus (Echinoidea) h Ribosomal RNA synthesis in embryogenesis. Paracentcotus lividus (Echinoidea) MYSLIVECEK. J. M.D., D.Sc, Prof. — Inst, of Pathophysiol., Med. Fac. Charles Univ., Lidicka 1, PLZEN, Czechoslovakia MYTILINEOU, Miss C. M.S. — Zool. Lab. and Museum. Fac of Sci., Univ. of Athens, Panepistimiopolis (Kouponia), ATHENS (621). Greece NAAKTGEBOREN. C. Dr. — Zool. Lab., Univ. of Amsterdam. Plantage Doklaan 44, AMSTERDAM, Netherlands a Development of foetus with regard to birth, especially proportions of foetus and umbilical cord. (Mammalia) 124 b Growth of foetus as a dependent of placental size and uterine characteristics. Ovis aries (Artiodactyla) and other Mammalia NABER E C. Ph.D., Prof. — Dept. of Poultry Sci., Coll. of Agric, The Ohio State Univ. 674 West Lane Ave.. COLUMBUS, Ohio 43210, U.S.A. a Nutrition and metabolism of the developing embryo. Callus domesticus (Aves) b Antimetabolites and morphogenesis; relationships to biochemical function. Gallus domes- ticus (Aves) NACE, G. W. Ph.D., Prof. — Dept. of Zool. and Amphib. Facility, Center for Human Growth and Developm., Univ. of Michigan. ANN ARBOR, Mich. 48104, U.S.A. • a Development and maintenance of defined strains. Rana 5 spp., Bufo 3 spp. (Anura). several spp. (Urodela) b Transfer of macromolecules from maternal organism to egg. Rana spec. (Anura) c Etiology of neoplasia in larva and adult. Rana spec. (Anura) d Role of specific macromolecules in fertilization. Rana spec. (Anura) e Problems in developmental and population genetics. (Amphibia) NADAMITSU, S. D.Sc, Prof. — Biol. Lab., Hiroshima Women's Coll., 1-71 Higashi, 1 chome. Ujina, HIROSHIMA, Japan a In vitro ovulation. Mus musculus (Rodentia) b Further development of ova in vitro. Mus musculus (Rodentia) c Tissue culture. Rana spec. (Anura) d Heteroploidy. Rana spec. (Anura) NAGAE, H. M.Sc. — Dept. of Anat., School of Med., Mie Pref. Univ., 100, Torii-Cho, TSU, Japan a Developmental mechanism of congenital anomalies. Mus molossinus albinos (Rodentia) NAGANO, T — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria NAGEL, J. Dr.3e Cycle — Lab. de Physiol. Anim.. Fac. des Sci., B.P. 347, 51 REIMS. France a Hemopoietic function of the foetal liver; factors controlling its progressive disappearance. Rattus norvegicus (Rodentia) (in collaboration with R. L. JACQUOT) NAIR, K. S. S. Ph.D. — Dept. of Zool., Fac. of Sci.. M.S. Univ. of Baroda, BARODA-2, India a Physiology of metamorphosis. Anthrenus uorax, Trogoderma granarium ( Dermestidae, Coleoptera) NAKABAYASHI, N. T. — Dept. of Obstet. and Gynecol., Center for Research in Reprod. Biol.. Univ. of Michigan Med. Center, ANN ARBOR, Mich. 48104, U.S.A. a The antigenicity of seminal plasma proteins studied by immunochemical methods. Homo sapiens (Primates) NAKAMURA, I. M.D., Prof. — Dept. of Anat., Nippon Med. School, 1-5, Sendagi 1-chome, Bunkyo-ku, TOKYO, 113 Japan a Embryological investigation on the cardiac muscle cells, conducting system and heart innervation (electron microscopy). Gallus domesticus (Aves) NAKAMURA, I. M.Sc. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of Kyoto, KYOTO, Japan NAKAMURA, K. M.D., Dr.Med.Sci., Prof. — Dept. of Anat., Div. I, Kobe Univ. School of Med., Kusunoki-cho 7, Ikuta-ku, KOBE, (650) Japan a Experimental teratological studies of the central nervous system. Raftui norvegicus (Ro- dentia), Oryctolagus cuniculus (Lagomorpha) b Developmental study of the blood-brain-barrier. Rattus norvegicus (Rodentia). Orycto- lagus cuniculus (Lagomorpha) NAKAMURA. O. D.Sc, Prof. — Dept. of Biol., Osaka Kyoiku Univ., Tennoji-ku, OSAKA, 543 Japan • a Fate map and formative movements. (Amphibia) b Cytodifferentiation during cleavage. (Amphibia) c Ultrastructural changes during early development. (Amphibia) d Nucleo-cytoplasmic interaction during early development. (Amphibia) e Cell interactions in relation to cytodifferentiation. (Amphibia) NAKANO, E. D.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan * NAKAYAMA, T. M.D. — Anat. Inst., Med. Fac, Nihon Univ., No. 30, Ooyaguchi-kami- machi, Itabashi-ku, TOKYO, Japan NAKAYAMA, Miss T. M.Ph. — The Research Inst, of Environm. Med., Nagoya Univ., Furo-cho, Chikusa-ku, NAGOYA, 464 Japan a Culture of embryos and embryonic tissues. Mus musculus (Rodentia) b Effects of ionizing radiations upon embryos of different species. Mus musculus, Rattus norvegicus (Rodentia) (in collaboration with U. MURAKAMI. Y. KAMEYAMA and K. HOSHINO) NAKAZAWA, T. Ph.D. — Div. of Biol., Natl. Inst, of Radiol. Sci.. Anagawa 4-9-1, CHIBA, (280) Japan a Effects of ionizing radiations on the biochemical mechanism of embryonic development. Artemia salina (Anostraca, Crustacea) 125 b Changes in nucleic acids and some other phosphorus fractions of tissues during late embryonic and early postnatal development. I^attus norvegicus (Rodentia) NANNEY, D. L. Ph.D., Prof. — Dept. of Zool., Univ. of Illinois, URBANA, 111. 61801, U.S.A. a Genetic and developmental studies on cortical variations. Tetrahymena pyriformis (Ciliafa) b Regulation of gene action in clonal cultures. Tetrahymena pyriformis (Ciliata) NARAIN (GUPTA), Mrs. B. Ph.D. — Dept. of Zool., Univ. of Gorakhpur, GORAKHPUR (U.P.). India a In vitro development of the life cycle stages of a parasitic species. Bunostomum tru gonocephalum (Nematoda) h Effect of temperature, light (visible and otherwise), and chemicals on in vitro devel- opment of the life cycle stages of some parasites of domesticated animals. (Nematoda) NARAYANAN, C. H. Ph.D. — Dept. of Biol., Washington Univ., ST. LOUIS, Mo. 63130, U.S.A. a Degenerative changes in the motor column at the lumbosacral level under normal and experimental conditions. Gallus domesticus (Aves) b Peripheral-central relationship with reference to the development of certain nuclear centers in the embryonic brain. Coturnix coturnix, Gallus domesticus (Aves) c Heterotopic transplantation of spinal cord segments in the embryo and its effect on motility and action pattern of the hind limbs. Gallus domesticus (Aves) d Experimental analysis of motility in fetuses. Rattus norvegicus (Rodentia) NASH, D. Ph.D. — Dept. of Genet., Univ. of Alberta, EDMONTON, Alta., Canada NAVAGIRI, Mrs. S. S. M.S. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India a Histochemistry of apical ectodermal ridge and the distal developing system of the limb; localization of enzyme responsible for early phase of differentiation. Gallus domesticus (Aves) NAVARATNAM, V. Ph.D. — Anat. School, Univ. of Cambridge, Downing St., CAM- BRIDGE CB2 3DY, England a Ontogenesis of cholinesterase and mono-amine activity in cardiac innervation. (Mammalia, incl. Homo sapiens) h Ultrastructure of the yolk sac. Homo sapiens (Primates) NAYLOR, E. Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWAN- SEA, Glamorganshire, Wales, U.K. NEBEL, L. A. M.D., Prof. — Dept. of Embryol. and Teratol., Tel-Hashomer Hosp., Tel- Aviv Univ. Med. School, TEL-AVIV, Israel a The effect of hypervitaminosis D2 on the formation, differentiation and function of the placenta. Rattus rattus (Rodentia) h Structural and functional characteristics of syncytial placenta cells in vitro from normal and pathological pregnancies. Homo sapiens (Primates) NEDVIDEK, J. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a Nucleic acids and subcellular particles in oogenesis and early development. (Amphibia) (in collaboration with Mrs. V. VILIMKOVA (HABROVA)) b Transplantation of nuclei in relation to nucleic acids. (Amphibia) (in collaboration with F. SLADECEK) NEEDHAM, A. E. D.Sc. — Dept. of Zool., Univ. of Oxford. Parks Road, OXFORD OXl 3PF, England a Beryllium chloride and regeneration. Polycelis nigra (Turbellaria) NEEDHAM, J. Dr., Prof. (Emer.) — Gonville and Caius Coll., CAMBRIDGE, Engeland • NEMER, M. — The Inst, for Cane. Research, 7701 Burholme Ave., Fox Chase, PHILA- DELPHIA, Pa. 19111, U.S.A. • NEMOTO, S. M.Sc. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO, 158 Japan a Metabolic rhythm during cleavage. (Echinoidea) NETZEL, H. E. M. Dr.rer.nat. — Zool. Inst, der Univ., Holderlinstr. 12, D74TOBINGEN, W.Germany a Morphogenesis. Centropyxis aculeata. C. discoides (Testacea, Rhizopoda) NEUMANN. D. Dr.rer.nat., Prof. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN-Linden- thal, W.Germany a Lunar periodicity of metamorphosis. Clunio marinus (Chironomidae, Diptera) NEW, D. A. T. Ph.D. — Physiol. Dept.. Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3EG, England • a Study of embryos developing in vitro. (Mammalia) NEWBURGH, R. W. Ph.D., Prof. — Dept. of Biochem. and Biophys., Fac. of Sci., Oregon State Univ., CORVALLIS, Ore. 97331, U.S.A. a Chemical and biochemical changes during development. NEWMAN, M. J. M.Phil. — Anat. Dept., The Med. School, University Walk, BRISTOL BS8 ITD, England a Electron microscopic and histochemical study of cells involved in morphogenetic mov- ements in primitive streak stages. Rattus norvegicus (Rodentia) 126 NEWTH. D. R. Ph.D., Prof. — Dept. of Zool., The University, GLASGOW W2, Scot- land, U.K. • a Regeneration of defective organs. (Amphibia) b Activity of grafted spleens against organ-specific antigens .Xenopus laevis (Anura) NEYFAKH, A. A. Dr.biol.sci., Prof. — Lab. of Biochem. Embryol., Inst, of Developmental Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW V-133, U.S.S.R. NIAZI, L A. Ph.D. — Dept. of Zool., Univ. of Rajasthan, JAIPUR, India a Limb and tail regeneration. Bufo spec, Rana spec. (Anura) h Enzyme studies during limb regeneration. Bufo spec, Rana spec. (Anura) c Influence of hypo- and hypervitaminosis A on development (ontogenetic and regenerative) in embryonic and larval stages. Buio spec, Rana spec. (Anura), Gallus domesticus (Aves) d Role of thyroid and adrenal hormones in larval limb regeneration. Bufo spec, Rana spec. (Anura) e Nerves in regeneration of limbs. Bufo spec, Rana spec. (Anura) f Development of the spinal cord in larvae (histological and histochemical). Bufo spec, Rana spec (Anura) NICOLET, G. D.Sc — Lab. d'Embryol. Exper., Inst. d'Histol., Univ. de Geneve, 20 rue de I'Ecole de Medecine, 1211 GENEVE 4, Switzerland • a Studies of the fate of the different parts of the primitive streak with the help of grafts labelled with tritiated thymidine. Gallus domesticus (Aves) h Investigations of the primary induction process with the help of labelled precursors. (Aves) c Role of Hensen's node in somitic differentiation. (Aves) NIE, C. J. van D.V.M. — Lab. of Anat. and Embryol., Free Univ., v. d. Boechorstst. 7, AMSTERDAM, Buitenveldert, Netherlands a Ontogenetic malformations of the heart. Sus scrofa. Bos taurus (Artiodactyla) b Pathological development of heart and vessels. Sus scrofa. Bos taurus (Artiodactyla) c Pathological development of bone. Sus scrofa (Artiodactyla) d Neonatal circulation. Sus domesticus (Artiodactyla) e Teratology. (Mammalia), Homo sapiens (Primates) NIEUWKOOP, P. D. Phil.Dr., Prof. — Hubrecht Lab. (Intern. Embryol. Inst.), Uppsala- laan 1, Universiteitscentrum "De Uithof", UTRECHT, Netherlands • a Experimental-morphological, electron-microscopical, biochemical, biophysical and histo- chemical analysis of morphogenetic interactions during early development. Ambysfoma mexicanum (Urodela) (in collaboration with Miss E. C. BOTERENBROOD, J. G. BLUEMINK, P. Th. M. van der SAAG. S. W. de LAAT and Miss G. A. UBBELS) b The induction of the mesoderm in the blastula and the origin of the dorso-ventral polarity of the egg. Ambystoma mexicanum (Urodela) c Pattern formation in artificially activated ectoderm. Ambystoma punctatum, A. mexicanum (Urodela), Rana pipiens (Anura) d Causal analysis of early development. Locusta migratoria, Gryllus domesticus (Orthoptera) NIGON, V. Dr.es Sci., Prof. — Sect, de Biol. Gener. et Appl., Fac. des Sci. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Metabohsme dans les diverses phases de revolution. Euglena gracilis (Euglenophyceae) b Differenciation des erythrocytes. Gallus domesticus (Aves) NIIZIMA, M. M.D., Ph.D., Prof. — Dept. of Anat., Fac. of Med., Tokyo Med. and Dental Univ., 1-5-47, Yushima, Bunkyo-ku, TOKYO (113) Japan a Tissue culture studies on metamorphosis. Rana catesbeiana, R. japonica. Bufo vulgaris (Anura) b Tissue culture studies on the development and differentiation of dental tissues. Ratfus norvegicus albinus, Felis domestica. Homo sapiens (Mammalia) c Tissue culture studies on cell differentiation. Gallus domesticus (Aves) d Identification of fibroblasts in tissue culture. Gallus domesticus (Aves), Rattus norvegicus. Homo sapiens (Mammalia) e Transplantation of tissue. Rana catesbeiana. R. japonica, Bufo vulgaris (Anura), Mus musculus, Rattus norvegicus (Rodentia) NIKITIN, N S. Dr. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENIN- GRAD B-164, U.S.S.R. a Morphogenetic potentiality of somatic cells. Ephydatia fluviatilis (Porifera) h Separation of different cell types (centrifugation, filtration, micro-manipulation). fPori- fera) c Development of culture media for dissociated cells. (Porifera) NIKITINA, Mrs. L. A. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Analysis of developmental potencies of nuclei in sequential stages of oogenesis by means of their transplantation into enucleated eggs. ( Acipenseridae, Chondrostei; Amphibia) h The influence of fractionated homogenates of some differentiating tissues (retina, muscle etc.) on the differentiation of future ectoderm in uncleaved eggs and early stages of cleavage. Triturus taeniatus (Urodela), Gallus domesticus (Aves) (in collaboration with G. V. LOPASHOV) 127 NIKOLSKAYA, Miss I. S. Cand.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St.. MOSCOW V-133, U.S.S.R. NILSSON, E. I. Y. Phil.kand. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, Sweden a Determination of cortical tension in oocytes and eggs. (Amphibia) NILSSON, J. R. Dr. — Biol. Inst, of the Carlsberg Found., Tagensvej 16, 2200 COPEN- HAGEN N., Denmark a Electron microscopic study of cell regeneration after short exposure to unfavourable con- ditions. Tetrahymena pyriformis (Ciliata) NILSSON, S. B. Phil.mag. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA, Sweden a Carbohydrate metabolism in very young embryos. Rana spp. (Anura), Gallus domesticus (Aves) (in collaboration with S. LGVTRUP) NISHIMURA, H. M.D., Prof. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo- ku, KYOTO 606, Japan a Modification of susceptibility to teratogenesis. Mus musculus (Rodentia) b Tests on drug teratogenicity. Macaca fuscata (Primates) c Anomalies in early embryos and maternal factors. Homo sapiens (Primates) NISHIOKA, Miss M. D.Sc. — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higashisenda-cho, HIROSHIMA, Japan a Synthesis of amphidiploids. (Ranidae, Anura) h Synthesis of nucleo-cytoplasmic hybrids between different species. (Ranidae, Anura) NISHIZU, K. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan a Myotube formation in cultured cells. Gallus domesticus (Aves) NIU, M. C. Ph.D., Prof. — Dept. of Biol.. Temple Univ.. Broad and Berks St., PHILA- DELPHIA, Pa. 19122. U.S.A. • NIXON, D. A. Ph.D. — Physiol. Dept., St. Mary's Hosp. Med. School, Paddington, LONDON W.2, England a Perfusion of the isolated foetus. Ovis aries (Artiodactyla) b Development of renal function. Ovis aries (Artiodactyla) NJEUMA (EFFANGE), Mrs. D. L. Sc.B. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONDON W.C.I, England a The effects of cell density on mitosis in tissue culture. Gallus gallus (Aves), Mus musculus (Rodentia) NOGAMI, H. M.D. — Dept. of Orthopaedic Surg., School of Med., Nagoya Univ.. 65 Tsuruma-cho. Showa-ku, NAGOYA, Japan a Digital malformations in the fetus caused by X-irradiation. Mus musculus (Rodentia) h Limb and digital malformations in the fetus caused by excessive vitamin A. Mus musculus (Rodentia) c The development of congenital spinal malformations induced by administration of 6-AN (6-aminonicotinamide), studied by means of periodic roentgenographic and histological examination until 360 days after birth. Mus musculus (Rodentia) NOLL, F. Dr.med. — Inst, fiir ZellphysioL. Deutsche Akad. der Wissensch. zu Berlin, Lindenberger Weg 70, 1115 BERLIN-Buch, East.Germany NONAMI, Y. Dr.Agric, Prof. — Dept. of Biochem. and Technol. of Anim. Products, Fac. of Agric, Univ. of Niigata, 106, Koganecho. NIIGATA, 950 Japan a Lysozyme of incubated egg white. Gallus domesticus (Aves) h Nucleic acids of yolk and white of the incubated egg; fate of sugar-nucleotides during incubation. Gallus domesticus (Aves) N0RBAEK S0RENSEN, I. — Finsen Lab., Finsen Inst., 49 Strandboulevard. DK-2100 COPENHAGEN, Denmark a Cell kinetics and folHcle growth after a single injection of testosterone propionate in in- fancy (^H-thymidine labeUing and autoradiography). Mas musculus (Rodentia) NORD, L. M.D. — Tornblad-Inst. for Comp. Embryol., Biskopsgatan 7, LUND, Sweden a Brain differentiation studied with immunofluorescence. Gallus domesticus (Aves), Mus musculus (Rodentia) b Monamine development in the nervous system. Gallus domesticus (Aves) (in collaboration with L. HAKANSSON) NORMAN, C. Ph.D., Prof. — Dept. of Biol., West Virginia Univ., MORGANTOWN, W.Va. 26506, 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 i n vitro. (Mammalia) c Effects of light on spermatozoa. (Mammalia) d Physiology and biochemistry of germ cells. (Mammalia) e Physiological and biochemical basis of cell senescence, f TTie effect of sterols on growth and development of sexuality. Phytophthoca cactorum (Fungi) 128 N0RREVANG. A. D.Sc. — Inst, of Comp. Anat.. Universitetsparken 15, COPENHAGEN O, Denmark a Embryology. Armillifer spec. (Linguatulida) (in collaboration with K. G. WING- STRAND) b Oogenesis (histological, histochemical and ultrastructural). Priapulus caudatus (Priapulida) c Early embryology. (Pogonophora) NORSTOG, K. J. Ph.D., Prof. — Dept. of Biol. Sci., Northern Illinois Univ., DeKALB, 111. 60115, U.S.A. a Development of cultured tissues. Cycadales and other spp. (Gymnospermae), cereals and other spp. (Angiospermae) b Embryology (tissue culture and electron microscopy). Hordeum vulgare (Gramineae) NOTO, T. Dr.Sci. — Dept. of Biol., Miyazaki Univ., MIYAZAKI, Japan a Tissue transformations in isolated pieces of early blastoderm, caused by RNA extracted from 10-day embryos, pretreated with actinomycin D. Gallus domesticus (Aves) b Theoretical considerations on possible mechanisms of genetical differentiation NOUMURA, T. D.Sc. — Div. of Endocrinol., Natl. Cancer Center Research Inst., Tsukiji 5-chome, Chuo-ku, TOKYO, Japan a Identification of embryonic gonadal hormones in sex differentiation. Gallus spec. (Aves), Rattus spec. (Rodentia) b Mechanism of gamete-shedding by the product of radial nerves. Asterias amurensis. Aster- ina pectinifera { Asteroidea, Echinodermata) c Mechanism of hormone action on developing genital systems. Gallus spec. (Aves), Rattus spec. (Rodentia) NOVAK, V. J. A. D.Sc. — Dept. of Physiol., Inst, of Entomol., Czechoslov. Acad, of Sci., Na Folimance 5, PRAHA 2, Czechoslovakia NOVEL, G. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France a Experimental analysis of the role of epidermal feather placodes and dermal feather con- densations in the formation of the feather. Gallus domesticus (Aves) NOWAK6WNA, Miss J. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool., Univ. of Wroclaw, ul.Sienkiewicza 21, WROCZ-AW, Poland a Cytological studies in larval development. Triturus cristatus, T. vulgaris, T. alpestris, T. montandoni (Urodela) NOYES, G. S. B.A. — Ira C. Darling Center for Research, (Marine Lab.), Univ. of Maine, WALPOLE, Me. 04573, U.S.A. a Metamorphosis, gametogenesis and oogenesis. Aglaophamus spec. nov. (Nephfyidae, Poly- chaeta) NOYES, R. W. M.D., Prof. — Dept. of Anat., Univ. of Hawaii, 1951 East-West Rd., HONOLULU, Hawaii 96822, U.S.A. a Tubal transport of spermatozoa and ova. (Mammalia) NUESCH, H. Dr.sci.nat., Prof. — Zool. Anstalt der Univ., Rheinsprung 9, 4000 BASEL, Switzerland NUMANOI. H. Ph.D., Prof. — Biol. Lab., School of Educ, Waseda Univ., Tozuka, Shinjuku-ku, TOKYO, Japan NUSSBAUM, N. S. Ph.D. — Dept. of Biol., Div. of Sci. and Engin., Wright State Univ., Col.Glenn Highway. DAYTON, Ohio 45431, U.S.A. a Hormonal aspects of mineralization as studied in hypophysectomized, mature animals (using regenerating scales as test objects). Carassius auratus, Fundulus heteroclitus (Tele- ostei) h Electron micrographic aspects of scale regeneration in non-juvenile animals (autoradio- graphy and cytochemical techniques applied at ultrastructural level). Carassius auratus (Teleostei) OBERLANDER, H. Ph.D. — Dept. of Biol., Brandeis Univ., WALTHAM, Mass. 02154, U.S.A. a Cellular aspects of the hormonal control of metamorphosis. Galleria mellonella (Lepi- doptera). Drosophila melanogaster (Diptera) b Developmental behavior of imaginal discs in vivo and in vitro. Galleria mellonella (Lepidoptera), Drosophila melanogaster (Diptera) OBIKA, M. D.Sc. — Dept. of Biol.. Keio Univ., YOKOHAMA-Hiyoshi, Japan a Correlation between pigment formation and pterin derivatives during development. (Am- phibia) h Experimental and electron microscopic studies on the cytodifferentiation of chromatophores. Hynobius tokyoensis, H. nigcescens. Ambystoma mexicanum, Triturus pyrrhogaster (Uro- dela), Xenopus laevis, Bufo vulgaris, Rana japonica (Anura) OBINATA, T. M.Sc. — Biol. Inst., Coll. of Gen. Educ, Univ. of Tokyo, Komaba, Meguro- ku, TOKYO. Japan O'BRIEN, B. R. A. Ph.D.. Prof. — School of Anat., Univ. of New South Wales, P.O. Box 1, KENSINGTON, N.S.W. 2033, Australia a Development and augmentation of intracellular enzyme proteins in cultured cells in the presence of extraneous DNA and RNA preparations. Mus musculus (Rodentia) 129 b A study of protein synthesis and utilisation in differentiating nerve cells cultured i n vitro. Callus domesticus (Aves) ODA, S. D.Sc, Prof. — Biol. Lab., Coll. of Gener. Educ, St. Paul's Univ., 3 Nishi-Ikebu- kuro, Toshima-ku, TOKYO, (171) Japan a Germination of statoblasts. Lophopodella carted ( Phylactolaemata. Bryozoa) O'DAY, D. H. B.Sc. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8. B.C.. Canada a Development of alkaline phosphatase activity in embryos; biochemical analysis (specific activity, gel electrophoresis) and histochemical analysis. Amby stoma gracile, Taricha torosa (Urodela) (in collaboration with C. V. FINNEGAN) O'FARRELL, A. P. A.R.C.S., Prof. — Dept. of Zool., Fac. of Sci., Univ. of New England, ARMIDALE, N.S.W. 2351, Australia a Regeneration and the endocrine system. Blattella germanica (Dictyoptera) (in collab- oration with A. STOCK) OGREN, R. E. Ph.D. — Dept. of Biol., Wilkes Coll., WILKES-BARRE, Pa. 18703, U.S.A. a Embryonic development (maturation, cleavage). Hymenolepis diminuta (Cestodes) h Structure and development of hexacanth embryos (oncospheres). Hymenolepis diminuta (Cestodes) c Differentiation of hooks in onconblasts of immature embryos. Hymenolepis diminuta (Ces- todes) d Differentiation and movement of embryonic myoblasts. Hymenolepis diminuta (Cestodes) OHASHI, T. M.Sc. — Dept. of Anat., School of Med., Mie Pref. Univ., 100, Torii-Cho, TSU, Japan a Developmental mechanism of the central and peripheral nervous system. Hynobius nebw losus (Urodela) OHNO, S. Ph.D., D.Sc. — Dept. of Biol., City of Hope Med. Center, 1500 E. Duarte Rd.. DUARTE, Cahf. 91010, U.S.A. a Oogenesis. Mus musculus, Microtus oregoni (Rodentia). Bos taurus (Artiodactyla) h Embryonic blastema for somatic elements of the gonad. Epitatretus stoutii (Cyclostomata), Salmo irideus (Teleostei), Lepus californicus (Lagomorpha). Peromyscus maniculatus (Rodentia), Bos taurus (Artiodactyla) c The gene activation mechanism in development, using the 6-PGD and ADH loci as markers. Coturnix coturnix (Aves) d Preferential activation of maternally derived alleles in development of extreme inter- specific hybrids, using the LDH, ADH, and 6-PGD loci as markers. Coturnix coturnix x Callus domesticus (Aves), Salmo gairdneri x S. trutta (Teleostei) OHSAKI, K. — Biol. Inst., Fac. of Sci., Univ. of Kanazawa, Marunouchi-1, KANAZAWA, Japan a Development of egg. Dugesia japonica (Tucbellaria) h Reaggregation of dissociated cells. Callyspongia elongata (Porifera) OJEDA SAHAGUN, J. L. Dr.en Med. — Serv. de Embriol. Exper., Cat. de Anat., Fac. de Med., VALLADOLID. Spain a Biochemical and ultrastructural effects of barbituric compounds on the embryo. Callus domesticus (Aves) h Effect of peripheric innervation area on cellular kinetics in the CNS (autoradiography). Callus domesticus (Aves) OJIMA. Y. D.Sc, Prof. — Dept. of Biol., Kwansei Gakuin Univ., Uegahara 1, NISHI- NOMIYA, Hyogo-ken 662, Japan a Developmental genetics. Cacassius auratus, Cyprinus carpio (Teleostei) b Developmental cytogenetics. Misgurnus anguillicaudatus, Cobitis biwae and other Japanese species (Teleostei) c Electron microscopy of fertilization. Mus musculus (Rodentia) OKA, H. Ph.D.. Prof. (Emer.) — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ., Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan • OKADA. M. Ph.D. — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ., Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan a Electron microscopical and biochemical analyses of embryonic diapause. Bombyx mori (Lepidopfera) OKADA, T. S. D.Sc, Prof. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of Kyoto, KYOTO, Japan • OKADA, Y. K. Dr.. Prof. (Emer.) — Div. of Zool., Natl. Sci. Museum, Ueno Park, Daito- ku, TOKYO. Japan • OKAZAKI. Miss K. D.Sc. — Embryol. Sect., Biol. Dept., Tokyo Metropolitan Univ., 2-1-1 chome. Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan • a Mechanism of spicule formation. (Echinoidea) b Myogenesis. (Aves; Mammalia) OKSCHE, A. Dr.med., Prof. — Anat. Inst, der Univ. Giessen, Friedrichstr. 24, 63 GIESSEN, W. Germany 130 a Vergleichende Studien iibcr die Entwicklung, cytologische Differenzierung, Cytodynamik und Funktion der Epiphyse und des Subcommissuralorgans; Potenzen des Neuralrohre- pithels uiid ihre Realisierung. Typische Vertreter aller KJassen. (Vectebrafa) OKUNO. Y. — Dept. of Biol., Osaka Kyoiku Univ.. Ten-noji-ku, OSAKA, 543 Japan a Differentiation of neoblasts. Dugesia japonica (Turbellaria) b In vitro culture of blastema. Dugesia japonica (Turbellaria) OLDFIELD (WHITEHEAD), Mrs. E. Ph.D. — Science Dept., Coombe Second. School for Girls, Clarence Ave., NEW MALDEN, Surrey, England OLIVEREAU, Miss M. M. A. Dr.es Sci. — Lab. de Physiol., Inst. Oceanographique. 195 rue Saint-Jacques, PARIS Ve, France a Cytology and histochemistry of endocrine glands in relation with development, and after various experimental procedures. (Salmonidae) h Study of pituitary grafting. Mollienesia formosa (Cypcinodontidae) c Histophysiology of endocrine glands. Anguilla anguilla (Anguillidae) d Hypophyseal-adrenocortical relationships, with chemical inhibitors, using histological techniques. (Salmonidae, Anguillidae, Poeciliidae) e Histophysiology of the pituitary gland in immature and mature animals, in correlation with osmoregulatory processes. Mugil aurafus (Teleostei) OLIVERO, M. Dr. — Inst, of exp. Embryol., Univ. of Turin, Via Giolitti 34, 10123 TORINO, Italy a Induction by prolactin of thyroid activation in larvae at avanced metamorphic stages. Buio bufo (Anura) (in collaboration with R. BRUNO, Miss A. GUARDABASSI, M. T. RINAUDO, E. CAMPANTICO and C. GIUNTA) OLIVO, O. M. Prof. — 1st. di Anat. Umana Norm., Univ. di Bologna, Via Irnerio 48, BOLOGNA, Italy • ONUMA, H. Ph.D. — Natl. Inst, of Anim. Industry, CHIBA-shi, 280 Japan a In vitro culture and storage of eggs. Oryctolagus cuniculus (Lagomorpha), Capra hircus. Bos taurus (Artiodactyla) OOISHI, Miss S. D.Sc. — Zool. Inst., Fac. of Fish., Pref. Univ. of Mie. 158 Edobashi 2-chome, TSU, Mie Pref.. 514 Japan a Postembryonic development. (Notodelphyidae, Copepoda) OOSTROM, C. G. van Med.drs. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61. AMSTERDAM-O., Netherlands a Differentiation of germ layers. (Mammalia) (in collaboration with C. D. A. VER- WOERD) OPPENHEIM, R. Ph.D. — Neuroembryol. Lab., North Carolina Dept. of Mental Health, Dorothea Dix Hosp., RALEIGH. N.C. 27602, U.S.A. a Neural and behavioural aspects of embryonic development (behavioural observations, microsurgery, brain stimulation and histological techniques). Gallus gallus. Anas pla- tyrhynchos, Streptopelia risoria (Aves) OPPENHEIMER. Miss J. M. Ph.D., Prof. — Dept. of Biol.. Bryn Mawr Coll., BRYN MAWR, Pa. 19010, U.S.A. • a Grafting of reaggregated cells from portions of the embryonic shield. Fundulus hetecoclitus (Teleostei) h Characterization of phospholipids in the developing nervous system. Fundulus heferoclitus (Teleostei) O'RAHILLY. R. M.D.. Prof. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE. Md. 21210. U.S.A. • a Early development (horizons I to IX). Homo sapiens (Primates) ORGEBIN (CRIST), Mrs. M. C. Dr. — Dept. of Obstet. and Gynecol.. Vanderbilt Univ. School of Med., NASHVILLE, Tenn. 37203, U.S.A. ORLOVA, Mrs. I. I. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R.. Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. ORNOY. A. M.D. — Dept. of Embryol. and Teratol.. Tel-Hashomer Hosp.. Tel-Aviv Univ. Med. School. TEL-AVIV. Israel a Studies on the protective actions of pregnancy in Vitamin D2 toxicosis. Ratfus rattus (Rodentia) (in collaboration with L. A. NEBEL) ORSINI, Mrs. M. W. G. Ph.D. — Dept. of Anat., Bardeen Med. Labs., Univ. of Wisconsin, MADISON, Wis. 53706, U.S.A. • a Fetal membranes, giant cells and pregnancy changes in uterine vessels. Mesocricetus auratus (Rodentia) b Factors controlling implantation and loss of zona pellucida. Mesocricetus auratus, Rattus norvegicus, Mus musculus, Cavia porcellus (Rodentia), Mustela putorius, M. vison (Car' nivora) c Decidualization during pregnancy and pseudopregnancy. Mesocricetus auratus, Rattus nor- vegicus, Mus musculus, Cavia porcellus (Rodentia), Mustela putorius, M. vison (Car- nivora) d Factors controlling life of corpora lutea. Mesocricetus auratus (Rodentia) ORTOLANI, Miss G. D.Sc, Prof. — 1st. di Zool.. Univ. di Palermo. Via Archirafi 18. 90123 PALERMO, Italy 131 a Interspecific transplantation of nuclei into eggs. (Amphibia) b Gynogenesis. (Ascidiae) ORTS LLORCA. F. Prof. — Dept. of Anat., Fac. de Med., Ciudad Univ.. MADRID, Spain • a Heterologous grafts in the blastodisc from cardiac area to non-cardiac area and vice versa, labeled with tritiated thymidine. Gallus domesticus (Aves) O'STEEN, W. K. Ph.D., Prof. — Dept. of Anat., Div. of Basic Health Sci., Emory Univ., ATLANTA, Ga. 30322, U.S.A. (no embryological work in progress) OTSUKI, K. Ph.D. — Natl. Inst, of Anim. Industry, CHIBA-shi, 280 Japan a Cytochemical nature of the acrosomic system of spermatids and spermatozoa. Bos taurus (Artiodactyla) h Storage of fertilized eggs. Oryctolagus cuniculus (Lagomorpha), Capra hircus (Artio- dactyla) OTTENHAMMAR, G. Fil.mag. — Zool. Inst., Univ. of Gothenburg, 4de Langgatan 7B, GOTEBORG SV, Sweden OTZCHELI, Mrs. T. A. Cand.biol.sci. — Dept. of Anim. Embryol., Inst, of Zool., Acad, of Sci. of the Georgian S.S.R., TBILISI. U.S.S.R. OUV/ENEEL, W. J. M.Sc. — Hubrecht Lab. (Internat. Embryol. Inst.), Uppsalalaan 1, Universiteitscentrum ,,De Uithof", UTRECHT, Netherlands a In vivo culture of imaginal eye discs of homoeotic eye mutants. Drosophila melano- gaster (Diptera) OVERTON. Mrs. J. H. Ph.D., Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637. U.S.A. • a Electron microscopic studies of cell surfaces and cell contacts OWERS, N. O. Ph.D. — Dept. of Anat., Coll. of Med., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Enzymatic activities of the implanting blastocyst. Rattus norvegicus, Cavia porcellus (Rodentia) OVVRE (BOEHME), Mrs. M. H. Ph.D., Prof. — Inst, of Marine Sci., Univ. of Miami, 1 Rickenbacker Causeway, MIAMI, Fla. 33149, U.S.A. OZAKI, H. Ph.D. — Dept. of Zool., Michigan State Univ., EAST LANSING. Mich. 48823, U.S.A. a Enzyme regulation during development; especially supernatant and mitochondrial malate dehydrogenases. Strong ylocentrotus purpuratus (Echinoidea) h RNA synthesis primed by chromatin isolated from embryos. Strong ylocentrotus purpuratus (Echinoidea) OzDzEl^lSKI, W. M.Sc. — Dept. of Embryol., Zool. Inst., Univ. of Warsaw, Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Origin and differentiation of primordial germ cells. Gallus domesticus (Aves), Mus mus- culus (Rodentia) b Differentiation of the somatic and germinal tissues of a mouse gonad. Mas musculus (Rodentia) OZEKI, K. D.Sc, Prof. — Biol. Inst., Coll. of Gen. Educ, Univ. of Tokyo, Komaba, Meguro-ku, TOKYO, Japan PACKER. A. D. M.D. — Dept. of Anat. and Histol.. Univ. of Adelaide. ADELAIDE, S.Austraha 5000, Australia a Experimental teratology. (Rodentia) PADYKULA. Miss H. A. Ph.D., Prof. — Lab. of Cell. Biol., Dept. of Biol. Sci., Wellesley Coll., WELLESLEY, Mass. 02181, U.S.A. a Postnatal differentiation of three fiber types in skeletal muscle (electron microscopy and histochemistry). Rattus norvegicus (Rodentia) (in collaboration with Miss G. F. GAU- THIER and Miss J. M. TAYLOR) b Differentiation of neuromuscular junctions in skeletal muscle (electron microscopy and histochemistry). Rattus norvegicus (Rodentia) (in collaboration with Miss G. F. GAU- THIER and Miss J. M. TAYLOR) c Ovarian-uterine-placental relationship (electron microscopy and histochemistry). Didelphys virginiana (Marsupialia) (in collaboration with Miss G. F. GAUTHIER and Miss J. M. TAYLOR) d Lipid transport by the yolk sac placenta (electron microscopy and histochemistry). Rattus norvegicus (Rodentia) (in collaboration with Miss G. F. GAUTHIER and Miss J. M. TAYLOR) PAGE, L A. M.D. — Dept. of Pediat., School of Med., Stanford Univ., 300 Pasteur Drive, PALO ALTO, Calif. 94304, U.S.A. a Synthesis of serum proteins. Rattus norvegicus (Rodentia). Sus scrota (interbred) (Artio- dactyla) b Translational level controls of protein synthesis. Rattus norvegicus (Rodentia), Sus scrofa (interbred) (Artiodactyla) PAGEOT (SIMPSON), Mrs. P. Lic.es. Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S.. 49bis Ave. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France 132 a Transdetermination in imaginal discs after long-term culture in vivo. Drosophila me- lanogasfer (Diptera) PAGER, Miss J. DrJe Cycle — Lab. de Physiol. Anim., Fac. des Sci., Univ. de Poitiers, 40 Av. de Recteur Pineau, 86 POITIERS. France a Histology and electron microscopy of the embryonic heart. Ambystoma tigrinum (Uro- dela), Ratfus norvegicus (Rodentia) PAI, M. L. Ph.D. — Dept. of Biochem., Med. Coll., BARODA, Gujarat State, India PAI. S. Dr.rer.nat. — Lab. of Developm. Physiol., Inst, of Exper. Biol., Acad. Sinica, 320 Yo Yang Rd., SHANGHAI, People's Republ. of China • PALA, Miss M. Dr. — 1st. di Zool., Fac. di S.M.F.N., Univ. di Sassari, Via Murroni 25, 07100 SASSARI, Italy a Research on the origin of the primordial germ cells. Anas spec. (Aves) PALECEK, J. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, PRAHA 2, Czechoslovakia a Proteins and antigens in early development. (Amphibia) (in collaboration with A. RO- MANOVSKf, A. MACELA and J. MACHA) PALMA, A. M.D. — 1st. di Anat. Umana Norm., Univ. di Roma, Viale Regina Elena 289, ROMA, Italy PALMITER. R. D. Ph.D. — Dept. of Pharmacol., School of Med.. Stanford Univ.. STANFORD, Calif. 94305, U.S.A. a Mechanisms of steroid (especially estrogen and progesterone) induction of ovalbumin synthesis in the oviduct of the immature chicken. Gallus domesticus (Aves) PANDEY. K. M.Sc. — Dept. of Zool.. Univ. of Gorakhpur. GORAKHPUR (U.P.). India a Seasonal changes in the secretory activity of the pituitary gland in relation to the gonads of a freshwater eel. The possible role of the gonadotrophins in regulation and development of gonads. (Teleostei) PANIGEL, M. Dr.en Med.. Dr.es Sci.. Prof. — Inst. Natl, de la Sante et de la Rech. Med.. Unite de Physiol, placentaire. Hop. Saint-Antoine. 184. rue du Faubourg Saint- Antoine. PARIS 12e. France a Placental structure and function: ultrastructural and perfusion studies (morphology, phy- siology and pathology). Cauia spec, Mus spec. (Rodentia), Macaca spec. Papio spec, Homo sapiens (Primates) b The uteroplacental circulation. Cynomolgus spec. (Primates) PANITZ. R. Dr. — Inst, fiir Kulturpflanzenforsch. der Deutschen Akad. der Wissenschaften zu Berlin. GATERSLEBEN. Kr.Aschersleben, East.Germany a Cytological and biochemical characterization of gene function in giant chromosomes. Acri- cctopus lucidus, Chironomus thummi, C. stcenzkei (Chiconomidae, Diptera) PANNBACKER, R. G. Ph.D. — Charles F. Kettering Research Labs.. 150 E.South College St.. YELLOW SPRINGS. Ohio 45387, U.S.A. a The chemical nature of aggregation hormones. Dictyostelium discoideum (Acrasiales) h Histochemical study of differentiation at the multicellular level. Dictyostelium discoideum (Acrasiales) PANNESE. E. M.D., Prof. — 2nd Chair of Human Anat.. Univ. of Milano. Via Mangia- galli 31. 20133 MILANO, Italy a Histochemical study at the electron microscope level of the differentiation of neuroblasts in embryonic spinal ganglia. Gallus gallus (Aves) b Electron microscope study of the development of satellite cells in spinal ganglia. Gallus gallus (Aves) PANT (AIYAR). Mrs. R. Ph.D. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLAHABAD-2. India a Quantitative studies of various metabolites in eggs, e.g. nitrogenous compounds, phos- phorus compounds, reducing substances and citric acid. Philosamia ricini (Lepidoptera). Musca domestica, Sarcophaga ruficornis (Diptera) (in collaboration with D. M. LAL and R. VARMA) b Variation in the activity of some enzymes in eggs. Philosamia ricini (Lepidoptera). Musca domestica, Sarcophaga ruficornis (Diptera) (in collaboration with D. M. LAL and R. VARMA) c Quantitative studies of various metabolites during metamorphosis. Philosamia ricini (Lepi- doptera), Musca nebulo, Sarcophaga ruficornis (Diptera) (in collaboration with D. M. LAL. Miss I. D. MORRIS and R. VARMA) d Quantitative studies of certain metabolites and enzymic studies on the fat body during larval and pupal development. Philosamia ricini (Lepidoptera) (in collaboration with D. M. LAL. Miss I. D. MORRIS and R. VARMA) PANTELOURIS, E. M. Ph.D. — Dept. of Appl. Microbiol, and Biol., Univ. of Strathclyde, George St., GLASGOW C.l, Scotland. U.K. a Effects of radiation on foetuses and means of alleviating them. Mus musculus (Rodentia) b Ontogenesis and inheritance of iso-enzymes. Drosophila spp. (Diptera), (Vertebrata) PAPACONSTANTINOU. J. Ph.D. — Biol. Div.. Oak Ridge Natl. Lab.. P.O. Box Y. OAK RIDGE. Tenn. 37830, U.S.A. • 133 a Studies on the regulation of protein and nucleic acid synthesis in lens cell differentiation in vivo and in vitro. Galltxs domesficus (Aves), Bos taurus (Artiodactyla) b The molecular events associated with lens fiber cell formation in vivo and in vitro; a) DNA synthesis; b) RNA synthesis and mechanism of stabilization of m-RNA; c) regulation of protein synthesis. Gallus domesticus (Aves), Bos taurus (Artiodactyla) c The regulation of DNA synthesis during development: 1. mechanism of DNA puff for- mation in salivary gland during 4th instar development. 2. DNA synthesis in testis during pre-meiotic prophase, in 4th instar. Rhynchosciara angelae (Dipteva) PARISI, V. Dr. — 1st. di Zool., Univ. di Milano. Via Celoria 10, MILANO. Italy PARK. Miss H. D. Ph.D. — Natl. Inst, of Arthritis and Metab. Diseases, Bldg 2. Rm Bl-14, BETHESDA, Md. 20014, U.S.A. a Cell division, differentiation and movement during regeneration. Hydra pseudoligactis (Hydroidea) h Relationship of growth and bud development to temperature changes. Hydra littoralis (Hydroidea) PARNELL (KING), Mrs. J. B.Sc, M.B.. B.Ch., Prof. — Dept. of Anat., Georgetown Univ., 3900 Reservoir Rd., N.W., WASHINGTON, D.C. 20007, U.S.A. PARRINELLO, N. D.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18. 90123 PALERMO, Italy a Hybridization between subspecies. Discoglossus pictus (Anura) PARSONS, R. M.Sc. — Muscular Dystrophy Research Labs., Newcastle Gen. Hosp., NEWCASTLE upon Tyne NE4 6BE, England a Cinemicrographic studies of the growth patterns of myoblasts cultured from normal and dystrophic muscle under the differential interference microscope, with an eye to deter- mining the origin of the myoblast nuclei. Gallus domesticus (Aves), Mus musculus (Ro- dentia). Homo sapiens (Primates) b Electron microscope studies of normal myoblasts undergoing active fusion, and myoblasts from dystrophic origin, with special attention to ribosome numbers and nucleolar mor- phology. Gallus domesticus (Aves), Mus musculus (Rodentia), Homo sapiens (Primates) PARTANEN, C. R. Ph.D., Prof. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH Pa. 15213. U.S.A. a Nuclear aspects of cellular differentiation in vitro. Paeonia suifruticosa (Ranuncula' ceae). Allium cepa (Liliaceae), Pteridium aquilinum (Filicinae) PARTRIDGE, T. A. — Dept. of Cell Biol., Univ. of Glasgow, GLASGOW W.2, Scotland, U.K. a Effects of antibodies on the behaviour of cells in tissue culture. Gallus domesticus (Aves), Mus musculus (Rodentia) h Treatment of cultured fibroblasts with monovalent antibody fragments (papain fragments) to test whether antibody-induced changes in cell behaviour can be attributed to aggluti- nation. Gallus domesticus (Aves) PASCAUD, M. Dr.. Prof. — Inst, de Recherches Sci. sur le Cancer, C.N.R.S., B.P.No.8. VILLEJUIF 94. France (no embryological work in progress) PASCHMA, M. D.Sc. — Zaklad Zool. Ogolnej, Inst, of Zool., Univ. of Wroclaw, ul. Sienkiewicza 21. WROCflAW. Poland PASCUAL-MORENILLA. Miss M. T. M.D. — Inst. F.Oloriz. Fac. de Med., Univ. de Granada, GRANADA, Spain PASQUINI, P. Ph.D., Prof. — 1st. di Zool. dell'Univ., Viale Regina Elena 324 (al poli- chnico), ROMA, Italy • a Growth and differentiation of regeneration blastema in vivo and in vitro. Planaria torva, Dugesia etrusca (Turbellaria) (in collaboration with H. MANELLI and Mrs. M. STAMPA (DI CASTRO)) b Growth and differentiation in regeneration. Planaria spec. (Turbellaria) (in collaboration with H. MANELLI) PASSAPONTI. A. M.D., Prof. — 1st. di Anat. Umana Normale. 2a Cattedra. Via Biblioteca 4, 95124 CATANIA, Italy a The morphological aspect of embryo atrophy. Homo sapiens (Primates) h The morphogenesis of anencephaly. Homo sapiens (Primates) c The development of the inguinal canal. Homo sapiens (Primates) d Structural changes of allantoic membrane epithelium submitted to the action of different agents. Gallus domesticus (Aves) PASTEELS, J. J. M.D., Prof. — Lab. d'Anat. et d'Embryol.. Fac. de Med. de I'Univ.. 97 rue aux Laines, BRUXELLES, Belgium • PASTISSON, C. Dr.en Biol. — Lab. de Biol. Gen.. Fac. des Sci.. B.P. 347. 51 REIMS. France PATIL, T. L. M.S. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India a Regulatory process of mesoderm in limb morphogenesis; various presumptive areas at pre-axial and post-axial borders of limb bud/wing bud of stage 19-20 embryos are ablated. Gallus domesticus (Aves) (in collaboration with P. N. DUBEY) 134 PATRICOLO. Miss E. Dr.nat.sci. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18. 90123 PALERMO, Italy a Enzymatic inhibitors in development. (Ascidiae) b Cellular aggregation. (Amphibia) c Action of dl-proline and its analogues on development. (Ascidiae) PATTEN. B. M. Ph.D., Prof. (Emer.) — Dept. of Anat., Univ. of Michigan. East Med. Bldg., ANN ARBOR, Mich. 48104, U.S.A. • PAUL. J. Ph.D. — The Beatson Inst, for Cane. Research. Royal Beatson Mem. Hosp.. 132 Hill St.. GLASGOW C.3. Scotland, U.K. • PAUTOU (M£RIC). Mrs. M. P. Dr.spec. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE. France a Interaction between limb bud ectoderm and mesoderm in xenoplastic associations; study of the competition between mesoderm of two species. Gallus domesticus. Anas boschas (Aves) b Interaction between wing and leg bud ectoderm and mesoderm in xenoplastic associations. Gallus domesticus. Anas boschas (Aves) PAVAN. C. Ph.D.. Prof. — Dept. of Zool.. Univ. of Texas at Austin. AUSTIN, Tex. 78712. U.S.A. a DNA, RNA and protein synthesis in polytene chromosomes in development of normal and infected larvae. (Sciaridae, Diptera) PAVE. A.-G. Ing., Dr.Spec. — Sect, de Biol. Gener. et Appl., Fac. des Sci. de Lyon. 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Thermogenese de I'oeuf. Bombyx mod (Lepidoptera) PAVKOV, A. D. Dr.med. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Rumania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Pathogenesis of cardiac malformations. Gallus domesticus (Aves) b Normal and pathological prenatal electrocardiography. Gallus domesticus (Aves) PAWLOWITZKI, I. H. — Inst, fur Humangenet. der Univ., Vesaliusweg 12/14, 44 MUN- STER/Westf., W.Germany a Chromosome analysis and isoenzyme determinations in spontaneous abortions. Homo sapiens (Primates) PAWEOWSKA, Mrs. M. — Dept. of Histol. and Embryol., Fac. of Vet. Med., Warsaw Agricult. Univ., ul. Grochowska 272, WARSZAWA, Poland PA YEN, Miss G. G. — Lab. d'Evolution des Etres Organises, Fac. des Sci., 105 Bd. Raspail. PARIS Vie. France a Formation and development of the androgenic glands. Their control by neurosecretion. Callinectes sapidus, Rhithropanopeus harrisii, Carcinus maenas (Brachyura, Decapoda, Crustacea) b Organogenesis of the genital apparatus in larval stages. Rhithropanopeus harrisii, Calli- nectes sapidus, Carcinus maenas (Brachyura, Decapoda, Crustacea) PEDERSEN. K. J. Ph.D. — Inst, of Gen. Zool., Univ. of Copenhagen, 15 Universitets- parken, DK 2100 COPENHAGEN 0. Denmark a Formation of connective tissue filaments in regenerating animals. Dugesia tigrina (Tur- bellaria) b Cytology and cytochemistry of starving animals. Dugesia tigrina (Tutbellaria) c Cellular basis for regeneration. Lineus ruber (Nemertini) PEDERSEN. T. M.D. — Finsen Lab.. Finsen Inst.. 49 Strandboulevard, DK-2100 COPEN- HAGEN, Denmark a Follicle growth and cell kinetics of the ovary in infancy, maturity and old age; during normal cycle, pregnancy and lactation; influence of gestagen (^H-thymidine labelling and autoradiography). Mus musculus (Rodentia) PEGRUM (HALL), Mrs. S. M. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Gower St., LONDON W.C.I, England a Study of cell relations in tissue culture. Gallus gallus (Aves), Mus musculus (Rodentia) (in collaboration with M. ABERCROMBIE and Mrs. J. E. M. HEAYSMAN (WAK- ELING) ) PEHLEMANN, F.-W. Dr. — Anat. Inst, der Univ., Neue Univ. Eingang F 1, 23 KIEL. W.Germany a Ultrastructural morphogenesis of endocrine glands (adenohypophysis, adrenal, thyroid). (Anura: Mammalia) b Ultrastructure of amitotic cell division. (Anura; Mammalia) PEHRSON, G. T. Dr.phil.. Prof. (Emer.) — Zool. Inst., Univ. of Stockholm. 70A RSd- mansgatan. Box 6801, S-113 86 STOCKHOLM, Sweden PELLING, C. Dr. — Max-Planck Inst, fur Biol., Abt.W.Beermann, Spemannstr. 34, 74 TUBINGEN, W.Germany • PENE, J. J. Ph.D. — Inst, for Developm. Biol.. Univ. of Colorado. BOULDER, Colo. 80302. U.S.A. PENER. M. P. Ph.D. — Dept. of Entomol. and Venomous Anim.. The Hebrew Univ., JERUSALEM, Israel PENMAN, S. — Dept. of Biol.,, Massachusetts Inst, of Technol.. CAMBRIDGE, Mass. 02139. U.S.A. • 135 PENTZ, S. Dr.phil. — Heiligenberg Inst., 7799 HEILIGENBERG. Baden, W.Germany a Rontgeninduktion von Mutationen an Fliigelschuppen. Plodia intecpunctella (Lepidoptera) b Induktionsbedingungen der larvalen Diapause. Plodia interpunctella (Lepidoptera) PENZLIN, H. Dr.rer.nat. — Zool. Inst, der Univ., Universitatsplatz 2, ROSTOCK, East. Germany PERA, L. M.D., Prof. — 1st. di Anat. e Istoembriol.. Univ. di Pisa, Via Roma 55, 56100 PISA, Italy PERDUE, Mrs. S. — Biol. Div.. Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE. Tenn. 37830, U.S.A. a Nuclear degeneration during the terminal lens fiber cell differentiation in developing lens; histological and microspectrophotometric analysis. Callus domesticus (Aves) (in col- laboration with S. P. MODAK) PERKOWSKA (MOSER), Mrs. E. Ph.D. — Inst, of Anim. Genet., King's Buildings, V/est Mains Rd., EDINBURGH 9, Scotland. U.K. PERLES, B. Lab. d'Anat., Fac. de Med., 45 rue des Sts. Peres, 75 PARIS Vie, France PERLMANN. H. P. Ph.D. — The Wenner-Gren Inst., Norrtullsgatan 16, S-1 13 45 STOCK- HOLM, Sweden • PERNARD. J.-C. — Div. of Cell Biol, and Chem. Embryol.. Zool. Inst., Univ. of Bern, Sahlistr. 8. CH-3000 BERN, Switzerland a Mechanism of tissue involution during metamorphosis. Xenopus laevis (Anura) (in col- laboration with R. WEBER) PERRIER, Mrs. H. D.E.S. — Lab. de Physiol. Anim., Fac. des Sci., B.P. 347, 51 REIMS, France a Electron microscopic study of the foetal and perinatal pancreas. Rattus norvegicus (Ro- dentia) PERRY. Miss M. M. B.Sc. — Inst, of Anim. Genet.. Univ. of Edinburgh, West Mains Rd.. EDINBURGH EH9 3JN, Scotland, U.K. a Study of certain features of developing embryos by electron microscopy. (Amphibia) (in collaboration with J. JACOB and C. H. WADDINGTON) b Electron microscope studies of mutants. Drosophila spp. (Diptera) (in collaboration with C. H. WADDINGTON) c Ultrastructural changes during growth. Micrastenas thomasiana ( Desmidoidea. Conjugales) (in collaboration with C. H. WADDINGTON) d Ultrastructural and experimental study of cleavage. Tritmus alpestris (Urodela). Xenopus laevis (Anura) (in collaboration with G. G. SELMAN) PERSAUD, T. V. N. M.D. — Dept. of Anat., Fac. of Med.. Univ. of the West Indies. Mona, KINGSTON 7, Jamaica a Developmental pathology and teratogenesis: embryopathic activity of the active principles contained in West Indian medicinal plants. Rattus norvegicus. Mus musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha) h Effects of essential amino acid imbalances on embryogenesis. Rattus norvegicus, Mus mus- culus (Rodentia), Oryctolagus cuniculus (Lagomorpha) PERSONS, Miss B. J. — Biol. Div., Oak Ridge Natl. Lab.. P.O. Box Y. OAK RIDGE. Tenn. 37830, U.S.A. a Cellular replication during the development and growth of lens. Callus domesticus (Aves) (in collaboration with S. P. MODAK) b The pattern of RNA synthesis during lens development. Callus domesticus (Aves) (in collaboration with S. P. MODAK) PERSOV. G. M. Cand.biol.sci. — Biol. Inst.. Leningrad State Univ., LENINGRAD B-164, U.S.S.R. a Sex differentiation. (Chondrostei; Teleostei) b The process of gametogenesis under ionizing radiations. (Chondrostei: Teleostei) PERTUSA. J. Ph.D. —Inst. Biol, de Sarria, Dr.Amigant 31, BARCELONA 17, Spain PETERS, A. Ph.D., Prof. — Dept. of Anat., School of Med.. Boston Univ.. 80 E. Concord St.. BOSTON. Mass. 02118, U.S.A. a Electron microscopic study of the formation of myelin sheaths and development of neuro- glial cells in the central nervous system. Rattus domesticus (Rodentia) PETERS, Mrs. H. M.D. — Finsen Lab., Finsen Inst.. 49 Strandboulevard, DK-2100 COPENHAGEN. Denmark a Development of the ovary: morphology, cell dynamics and function. Mus musculus (Rodentia) h The effect of hormones (testosterone propionate) on the development of the ovary in infancy. Mus musculus (Rodentia) c Development of ovaries in the offspring of females irradiated before conception. Mus musculus (Rodentia) ^ttvt,-t-m PETERS, J J. Ph.D., Prof. — Dept. of Biol., Xavier Univ.. Victoria Parkway. CINCIN- NATI. Ohio 45207, U.S.A. PETERS, N. W. Dr.rer.nat. — Inst, fiir Hydrobiol. und Fischereiwiss., Univ. Hamburg. Olbersweg 24, 2 HAMBURG-Altona 1, W.Germany 136 a EHapause and developmental pathology (effect of environmental factors on embryonic development). Nothobranchius guentheci, Rivulus cylindraceus (Cyprinodontidae. Teleostei) b Effect of metabolic inhibitors on embryonic development. Nothobranchius guenfheri, Ri- vulus cylindraceus (Cyprinodontidae. Teleostei) c Development of eye-rudiments in cave-fish. Astyanax mexicanus (Characinidae, Teleostei) PETERS. Th. Dr.med. — Anat. Inst, der Univ. Giessen. Friedrichstr. 24, 63 GIESSEN, W. Germany PETIT, A. Lic.es Sci. — Lab. de Zool. et d'Embryol. Exper., Univ. de Strasbourg, 12 rue de I'Universite. STRASBOURG, France PETRUCCI, D. — Dept. of Gen. Biol., Univ. of Sassari, SASSARI, Italy PETRY, G. Dr.med., Prof. — Anat. Inst, der Univ.. Robert Kochstr. 6. 355 MARBURG/ Lahn, W.Germany PEXIEDER, T. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2. Czechoslovakia — temporarily: Inst. d'Histol. et d'Embryol., Univ. de Lausanne, 9 rue du Bugnon, 1005 LAUSANNE, Switzerland a Normal development of the aortic arches. Callus domesticus (Aves) h Experimental morphology of the aortic arches and branchial arches. Callus domesticus (Aves) c Embryophysiology of the circulation in the aortic arches. Callus domesticus (Aves) d Cell death in the development of the heart. Callus domesticus (Aves) PFLUGFELDER, O. Dr.rer.nat., Prof. — Zool. Inst., Naturwissensch. Fak.. Hochschule Hohenheim, 7 STUTTGART-Hohenheim, W.Gerniany a Anderung des Stoffwechsels nach Storung des hormonalen Gleichgewichts. (Insecta) b Einfluss der Pinealektomie auf die Postembryonalentwicklung. (Teleostei) c Histophysiologie der Corpora allata nach experimenteller Beeinflussung. (Insecta) d Wirkungsmechanismen von Thyreostatika. Rana temporaria, Xenopus laevis (Anura), Lacerta spec. (Reptilia), Callus domesticus (Aves) e Biomorphose. f Egg formation in giant animals. Carausius morosus ( Phasmidoptera) PHILLIS. J. W. Ph.D. — Dept. of Physiol.. Monash Univ., CLAYTON, Vict. 3168, Australia a Descriptive morphology and histochemistry, and experimental morphology of the cerebel- lum (C.R. length 2 cm until after birth). Felis domestica (Carnivoca) PIATIGORSKY, J. Ph.D. — Lab. of Developm. Biol., Sect, on Exper. Embryol., Natl. Inst, of Child Health and Human Developm., Natl. Inst, of Health, BETHESDA, Md. 20014, U.S.A. a The role of RNA in the development of the lens. Callus domesticus (Aves) b The regulation of protein synthesis in eggs and embryos. (Echinoidea) PIATT. J. Ph.D. — Dept. of Anat., School of Med.. Univ. of Pennsylvania. PHILA- DELPHIA. Pa. 19104, U.S.A. • PICHERAL. B. Dr.3eme Cycle — Lab. de Biol. Gen., Fac. des Sci.. 35 RENNES, France a Nuclear transplantation. (Amphibia) b Spermatogenesis. (Amphibia) PICKWORTH, Miss S. Ph.D. — Dept. of Zool, Univ. of Bristol, BRISTOL BS8 lUG, England a Artificial activation of egqs. pronucleus formation. Mesocricetus aucatus (Rodentia) PIDDINGTON, R. L. Ph.D. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104, U.S.A. a Studies on a causal relationship in the embryo between the steroidogenic activity of the adrenal glands and the normal pattern of glutamine synthetase activity in the neural retina. Callus domesticus (Aves) PIEAU, C. Lic.es Sci. — Serv. d'Embryol. Exper. de I'lnst. Pasteur, 20 rue des Moulins, 95 SANNOIS, France a Researches on the mechanisms of sexual differentiation. Cistudo euvopaea, Testudo graeca (Chelonia) b Researches on the establishment of urogenital connections and upon the development of the cloaca. Anguis fragilis (Lacertilia) c Effects of X-rays on embryonic development. Lacerta viridis. Anguis fragilis (Lacertilia) (in collaboration with A. RAYNAUD) PIERRO, L. J. Ph.D.. Prof. — Dept. of Anim. Genet.. Storrs Agric. Exper. Station. Univ. of Connecticut. STORRS. Conn. 06268, U.S.A. a Chemical teratogenesis: inhibitors of nucleic acid and protein metabolism. Callus domes- ticus (Aves) b Gene interaction in the control of formation of specific melanin granules. Mus musculus (Rodentia) c Eye development. Mus musculus (Rodentia) d Developmental genetics. Callus domesticus (Aves) 137 PIGHILLS. Miss E. B.Sc. — Dept. of Zool.. Univ. Coll. of North Wales, BANGOR, Caern., Wales, U.K. a Induction of chimaerism. Rattus norvegicus. Mus musculus (Rodentia), Capra hircus, Ouis aries (Artiodactyla) b Experimental embryology. Mus musculus (Rodentia) PIHAN, J. C. Agr.de Sc. — Lab. de Zool., Fac. des Sci. de Nancy, 30 rue Ste Catherine, 54 NANCY, France a Etude experimentale du developpement post-embryonnaire du systeme tracheen. (Brachy- cera, Diptera) (en collaboration avec F. STEPHAN) PIJNACKER, L. P. Ph.D. — Genet. Inst., Univ. van Groningen, Rijksstraatweg 76, HAREN (Gr.), Netherlands a Oogenesis, parthenogenesis, and teratogenesis. Caraitsius morosus. Bacillus rossii (Phasmi- dopteca), (Acad, Arachnida) PIKO, L. Ing.Agr., D.V.M. — Dept. of Developm. Biol., Div. of Biol., Calif. Inst, of Technol., PASADENA, Cahf. 91 109, U.S.A. • PILKINGTON, J. B. Ph.D. — Dept. of Zool., Univ. of Otago, DUNEDIN. New Zealand a Calcification in metamorphosis. (Amphibia) b Calcification. (Echinoidea) PILLERI, G. Dr.med. — Himanat. Inst, der Psychiatr. Univ. Klinik Bern, 3072 OSTER- MUNDIGEN-BE, Switzerland a Entwicklung des Gehirns. Castor canadensis (Rodentia) b Ober die Protuberantia sclerae am embryonalen Auge. Homo sapiens (Primates) c Ontogenese des Auges. Balaenoptera physalus, B. acutorostrata, Megaptera novaeangliae. Delphinus delphis, Tursiops truncatus, Delphinapterus leucas (Cetacea) d Entwicklung der Korperform. Balaenoptera physalus, B. acutorostrata, Megaptera novae- angliae, Delphinus delphis, Tursiops truncatus, Delphinapterus leucas (Cetacea) e Ontogenese des Zentralnervensystems. Balaenoptera physalus, B. acutorostrata. Megaptera nodosa, Delphinus delphis, Tursiops truncatus, Delphinapterus leucas (Cetacea) f Ontogenesis (especially nervous system). Globicephala melaena (Odontoceti, Cetacea) PINAMONTI, S. Dr.Biol. — 1st. di Zool., Univ. di Ferrara, Via Previati 24. 44100 FER- RARA, Italy PINEAU, H. — Lab. d'Anat, Fac. de Med., 45 rue des Sts. Peres, 75 PARIS VI, France PINET, J.-M. Dr.3e Cycle — Inst. Natl. Agronomique, Lab. de Zool., 1 6 rue Claude-Bernard, 75 PARIS Ve, France a Studies of the development of the maxillary stylet (fine structure, histochemistry of the styligenic organ). Rhodnius prolixus (Reduviidae, Heteroptera) b Potentiality of the cells of the styligenic organ according to their sites. Rhodnius prolixus (Reduviidae, Heteroptera) c Development of the integument, especially studies of the chitinogenic cell of the max2'ary bud. Rhodnius prolixus (Reduviidae, Heteroptera) PINOT, Miss M. Dr.es. Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France a Etude de la croissance et de la differenciation du bourgeon de membre in vitro. Gallus gallus (Aves) b Rapports mesenchyme axial - mesenchyme lateral dans I'organogenese du membre. Gallus gallus (Aves) c Regulation tardive du membre. Gallus gallus (Aves) PLAS, Mrs. C. Dr.3e Cycle — Lab. de Physiol. Anim., Fac. des Sci., B.P. 347, 51 REIMS. France a Pre- and postnatal changes in glucose and glycogen metabolism of the liver cell; in vivo and in isolated cultured hepatocytes. Rattus norvegicus (Rodentia) (in collaboration with R. L. JACQUOT) PLASOTA, K. J. M.Sc. — Inst, of Zool., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Development of the skull. Rana ferresfris, R. esculenta, R. tempocacia, Bufo spec, Pelobates ^uscus (Anura) PLEEGING, J. H. Med.Drs. — Dept. of Anat. and Embryo!., State Univ. of Groningen, Oostersingel 69, GRONINGEN, Netherlands PLESNER, P. M.D., Prof. — Dept. of Molec. Biol., Odense Univ., 230 Hjallesevej, 5000 ODENSE, Denmark a The formation of ribosomes. Tetrahymena spec. (Ciliata) POHLEY, H. }. Dr., Prof. — Inst, fur Entw.physiol., Univ. zu Koln, Gyrhofstr. 17, 5 KOLN-Lindenthal, W.Germany a Theoretische und experimentelle Untersuchungen iiber 1 ) Regeneration und Hautung, 2) Regulation des Zellteilungswachstums. Ephestia kuhniella (Lepidoptera) . Periplaneta americana (Orthoptera) b Modelldarstellung entwicklungsphysiologischer Systeme mit Hilfe von programmgesteuerten Rechenanlagen 138 POLEZHAEV. L. V. Dr.biol.sci.. Prof. — Inst, of Developm. Biol.. Acad, of Sci. of the U.S.S.R.. Vavilov St. 26, MOSCOW B-133, U.S.S.R. • a Regeneration of cranium bones. Mus domesticus, Rattus norvegicus, Oryctolagus cuniculus, Felis domestica, Canis familiaris (Mammalia) b Regeneration of dental tissue. Canis familiaris (Carnivora) c Regeneration of myocardium. Rattus norvegicus, Oryctolagus cuniculus, Felis domestica, Canis familiaris (Mammalia) d Restoration of regeneration capacity of limbs after X-irradiation. Ambystoma mexicanum (Urodela) (in collaboration with Miss N. A. TEPLITZ and Mrs. S. J. TUCHKOVA) e Physiological regeneration of the brain. Felis domestica, Rattus norvegicus (Mammalia) POLGE, C. Ph.D. — A.R.C. Unit of Reprod. Physiol. & Biochem., Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIDGE, England a Factors influencing fertilization and early embryonic development (effects of age of gametes, administration of drugs and hormones, in vitro treatments and transplant- ations). Sus scrofa (Actiodactyla) POLLARD, D. R. Ph.D. — Dept. of Genet., Albert Einstein Coll. of Med., Yeshiva Univ., Eastchester Rd. & Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. a A study of the morphogenetic movement involved in closure of the secondary palate with special reference to strain differences in response to the cleft palate-producing effect of 6-aminonicotinaraide. Mus musculus (Rodentia) h The role of cytoplasmic genes in development. Mus musculus (Rodentia) POLTEVA, Mrs. D. G. — Dept. of Embryol. Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. a Somatic embryogenesis and regeneration. Metridium senile fimbriatum, Anthopleura spec. (Zoantharia, Actinozoa) b Action of neuropharmaca on somatic embryogenesis. Metridium senile dianthus (Zoan- tharia, Actinozoa) c Dedifferentiation of cells during morphogenetical processes in regeneration and somatic embryogenesis. Metridium senile dianthus (Zoanthara, Actinozoa) PONTIER. J. Dr.es Sci. — Sect, de Biol. Gen. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE, France a Analyse factorielle appliquee a I'etude de la morphogenese. Myzus persicae (Aphididae, Rhynchota) POPOV, V. V. Dr.biol.sci., Prof. — Chair of Embryol., Biol. Fac, State Univ. of Moscow. Lenin Hills, MOSCOW V-234, U.S.S.R. POPP, R. A. Ph.D. — Biol. Div.. Oak Ridge Natl. Lab.. P.O. Box Y. OAK RIDGE, Tenn. 37830, U.S.A. a Ontogeny of variant forms of esterases in tissues; qualitative and quantitative chacteristics of allelic forms of esterases studied by starch and/or acrylamide gel electrophoresis. Mus musculus (Rodentia) b Compensatory effect of multiple esterases owing to the action of null genes. Mus musculus (Rodentia) PORCELLI. Miss F. Dr. — Inst, of Histol. and Embryol., Univ. of Pavia, Piazza Botta 10, 27100 PAVIA, Italy a Histology, histochemistry and enzymology of yolk sac (pre- and postembryonic stages). Salmo irideus (Salmonidae, Teleostei) PORTER, K. R. Ph.D., Prof. — Biol. Labs., Harvard Univ., 16 Divinity Ave., CAM- BRIDGE, Mass. 02138, U.S.A. • PORTMANN, A. Dr.Phil., Prof. (Emer.) — Zool. Anstalt der Univ., Rheinsprung 9, 4000 BASEL. Switzerland a Embryology. (Opisthobranchia, Prosobranchia, Gastropoda; Aves; Mammalia) h Morphological analysis of early postembryonic development. (Rodentia; Insectivora) PORTMANN, Miss A.-M. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Nancy, 30 rue Ste Catherine, 54 NANCY, France POTEMKINA, Mrs. D. A. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. POULSON, D. F. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520. U.S.A. • a Mid-gut: genesis and differentiation. Drosophila melanogasfer (Diptera) h Chromosomal control of differentiation. Drosophila melanogasfer (Diptera) c Neurogenesis in normal and genetically deficient embryos. Drosophila melanogaster (Dip- tera) d Maternally inherited sex-ratio disturbances of development. Drosophila melanogaster, D. bifasciata. D. willistoni, D. nebulosa, D. equinoxialis, D. robusta (Diptera) e Developmental genetics. Drosophila melanogaster (Diptera) POURHADI. R. M.D. — Lab. d'Histol.-Embryol., Fac. de Med., Bd. Winston Churchill, B.P. 38, 63 CLERMONT-FERRAND, France a Action of ultrasound on embryonic organisms. Triturus helveticus (Urodela) 139 b Cytology of neonatal liver; differentiation of intercellular junctions, characters of micrcv bodies; histochemical differentiation. Mas musculus (Rodentia) (in collaboration with J. P. TURCHINI and P. MALET) POURREAU (SCHNEIDER), Mrs. N. M. Dr.es Sci. — Lab. d'Embryol. exper. du Coll. de France et du C.N.R.S., 1 1 Place M. Berthelot. PARIS Ve. France • a Use of organ culture and suspension culture techniques for the study of functional testi- cular interstitial cell tumors. Mus musculus, Rattus norvegicus (Rodentia) b Establishment of cell lines from a rat testicular interstitial cell tumor for studies on the functional capacities of isolated Leydig tumor cells. Rattus norvegicus (Rodentia) c Effect of testicular interstitial cell tumor explants on prostate from 6 week old animals in organ co-culture. Rattus norvegicus (Rodentia) d Attempts to obtain sex transform_ation in embryonic gonads by association with Leydig cell tumors in organ culture. Rattus norvegicus (Rodentia) POURTOIS, M. M.D., Lic.Sc.Dent. — Lab. d'Embryol.. Inst. d'Anat., Univ. de Bruxelles, 97 rue aux Laines, BRUXELLES 1, Belgium a Normal and abnormal closure and fusion of primary and secondary palate (tissue culture, histochemistry, histology). Rattus norvegicus, Mus musculus (Rodentia), Homo sapiens (Primates) b Morphogenesis and cytogenesis of tooth buds. Rattus norvegicus, Mus musculus (Rodentia) PRAHLAD. K. V. Ph.D., Prof. — Dept. of Biol. Sci., Northern Illinois Univ., DeKALB, 111. 60115, U.S.A. a Study of induced metamorphosis: histological maturity and the development of tissue sensitivity to thyroid hormones in the embryo; biochemical changes evoked by thyroid hormones in embryonic and adult susceptible tissues. Ambystoma mexicanum, A. tigrinum. Nectucus maculosus (Urodela) h Comparative study of hypothalamo-pituitary-thyroid axis in pre- and post-metamorphic animals. Ambystoma mexicanum, A. tigrinum, Necturus maculosus (Urodela) PRASAD, M. R. N. Ph.D., Prof. — Dept. of Zool., Univ. of Delhi. DELHI 7, India PRASDNIKOV, E. Cand.med.sci. — Dept. of Embryol., Murmansky Sea-Biol. Inst., Acad, of Sci., DALNII ZELENZI, U.S.S.R. PRATT, C. W. McE. M.D. — Anat. School, Univ. of Cambridge, Downing St.. CAM- BRIDGE CB2 3DY, England a Development of skeletal tissue. PRAY. T. R. Ph.D.. Prof. — Dept. of Biol. Sci.. Univ. of Southern California. University Park. LOS ANGELES. Calif. 90007. U.S.A. a Development of the gametophytes and juvenile stages of the sporophytes. ( Cheilantheae, Pteridaceae, Filicinae) b Development of the vein systems of leaves. Anemia spec, Macsilea spec, Cyctomium spec. Acrostichum spec and other spp. (Filicinae) c Investigation of factors controlling planes of cytokinesis in early gametophyte devel- opment. Cheilanthes spp. (Pteridaceae, Filicinae) PRCHAL. J. F. M.D. — Biochem. Dept.. Med. School, Dalhousie Univ.. Sir Charles Tupper Building. HALIFAX. N.S., Canada a Regulation of synthesis of hemoglobin and blood proteins in the embryo by transfer RNA. Gallus gallus (Aues) PREDA, V. G. M.D.. Prof. — Cat. de Biol., Inst. Medico-Farmaceutic. Str. Pasteur 6, CLUJ. Rumania a Influence de la temperature d'incubation sur I'infrastructure et I'immunomorphologie de I'embryon. Gallus spec. (Aves) b Affrontation d'organes embryonnaires in vitro. Mus rattus (Rodentia) c Action de I'hormone gonadotrope choriale sur la differenciation sexuelle des canaux de Miiller. Gallus spec. (Aves) PRESCOTT, D. M. Ph.D., Prof. — Inst, for Developm. Biol.. Univ. of Colorado, BOUL- DER, Colo. 80302, U.S.A. PRESLEY, R. M.B., B.Chir. — Anat. School. Univ. of Cambridge, Downing St., CAM- BRIDGE CB2 3DY. England a Tissue culture and embryogenesis. (Mammalia) b Ultrastructure of embryos. Various spp. (Rodentia) c Fertilization; kinetics and nature of block to polyspermy. ( Echinodermata ) PRESS. N. Ph.D.. Prof. — Dept. of Zool. Univ. of Wisconsin. MILWAUKEE. Wis. 53201, U.S.A. a Transfer of macromolecules from follicle cells to developing oocytes. (Aves) b Unusual organelles in the ovary. (Aves) c Respiration of oocytes. (Aves) PRESTIGE, M. C. M.A. — Physiol. Dept., Med. School, Univ. of Edinburgh. Teviot Place. EDINBURGH 8. Scotland. U.K. PRICE. Miss D. Prof. (Emer.) — Dept. of Biol.. Div. of Biol. Sci.. Univ. of Chicago. CHICAGO. 111. 60637, U.S.A. • a The development of endocrines in embryonic systems 140 PRIESTER, W. de M.Sc. — Zool. Lab., Univ. of Leiden, Kaiserstr. 63, LEIDEN. Nether- lands f f /rk a Electron microscopic studies of developmental stages. Calliphora erythrocephala (Diptera) PRINS. H. J. — Dept. of Anat. and Embryol., Univ. of Amsterdam, Mauritskade 61, AM- STERDAM-O., Netherlands a Analysis of fracture-repair. Amby stoma mexicamim (Ucodela) (in collaboration with H. A. L. TRAMPUSCH) PRITCHARD. E. T. Ph.D., Prof. — Dept. of Oral Biol.. Univ. of Manitoba. WINNIPEG, Manitoba, Canada a Cholesterol esterase activity in developing brain. Rattus norvegicus (Rodentia) b Lipid content of developing salivary gland and possible role in secretion. i?a«us norfe^icus (Rodentia) PROPPER, A. Doct.3e Cycle — Lab. de Zool.. Inst, des Sci. Nat., Fac. des Sci., Place Marechal Lcclerc. 25 BESANgON. France a Organogenese de la glande mammaire par la methode des cultures d'organe et des greffes embryonnaires. Mus musculus (Rodentia). Oryctolagus cuniculus ( Lagomorpha) (en col- laboration avec L. GOMOT) PROVENZANO. A. J. Ph.D., Prof. — Inst, of Marine Sci., Univ. of Miami, 1 Rickenbacker Causev^ay, Virginia Key, MIAMI. Fla. 33149. U.S.A. PRUDHOMME. J. C. Dr.Spec. — Sect, de Biol. Gen. et Appl.. Univ. de Lyon. 43 Bd. du II Novembre 1918, 69 VILLEURBANNE. France a Culture d'organes in vitro. Bombyx mod (Lepidoptera) PUCCIA. E. D.Sc. — 1st. di Zool., Univ. di Palermo. Via Archirafi 18. 90123 PALERMO. Italy a RNA synthesis in embryonic development. (Ascidiae) h The biochemistry of regeneration. (Annelida) PUCCINELLI. Mrs. I. Dr.Nat.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ.. Via A. Volta 4. PISA. Italy a Development and cytology. (Tricladidea, Tiirbellaria; Hirudinea, Annelida) PURKO. J. Ph.D.. Prof. — Dept. of Zool.. Coll. of Sci., Univ. of Western Ontario, LONDON. Ont.. Canada a Biological action of alkylating agents (sulphur and nitrogen mustards) and mechanism of resistance to their effects in embryos and in fibroblasts grown in culture. (Teleostei), Mus musculus (Rodentia) b Mechanisms underlying processes in early embryogenesis and cell division, using various metabolic inhibitors of DNA, RNA and proteins, and correlating their biological and biochemical effects. (Teleostei) c Biological action of the "chemosterilant" hempa (hexamethylphosphoric triamide) and mechanism of resistance to its effects in embryos and in fibroblasts grown in culture. (Teleostei), Mus musculus (Rodentia) PUZA, V. C.Sc. — Dept. of Biol., Med. Fac, Charles Univ., gimkova 870. HRADEC KRALOVfi. Czechoslovakia a Muscle cell development in tissue culture (amitosis, origin and causes of multinuclearity) . Gallus domesticus (Aves), Rattus norvegicus, Mus musculus (Rodentia) h Nucleolus during myogenesis in vitro studied by phase-contrast time-lapse cinemato- graphy. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) (in collaboration with J. GAYER and M. HROCH) PUZANOVA, Mrs. L. MUDr., C.Sc. — Dept. of Anat., Charles Univ., U nemocnice 3. PRAHA 2. Czechoslovakia a Development of the internal structure of muscles. Rattus albus (Rodentia), Homo sapiens PYLILO. Miss I. V. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5. LENIN- GRAD B-164. U.S.S.R. a Regeneration. Beroe cucumis (Ctenophora) QUAGLIA A. Dr.nat.sci. — 1st. di Anat. Comp.. Univ. di Bologna. Via Belmeloro 8. BOLOGNA (103). Italy QUEVEDO. W. C, Jr. Ph.D., Prof. — Div. of Biol, and Med. Sci.. Brown Univ.. PROVIDENCE. R.I. 02912. U.S.A. a Genetic regulation and developmental variations of multiple forms of tyrosinase in melano- cytes. Mus musculus (Rodentia) RABAEY. M. M.D.. Prof. — Ophthalmol. Clinic, Univ. Hosp., De Pintelaan. GENT, Belgium r -^ , tt c RADECKA, Mrs. E. ERDMAN D.Sc. — Zaklad. Zool. Ogolnej, Inst, of Zool., Univ. of Wroclaw, ul.Sienkiewicza 21, WROCK,AW, Poland RADO (LUSER), Mrs. G. D.Sc. — 1st. di Zool. e Anat. Comp., Univ. di Trieste, Via Alfonso Valerio. 32 TRIESTE. Italy a Bidder's organ differentiation. Buio bulo (Anura) ,ti-> at-icct^ RADOS. I. D.D. — Inst, of Histol. and Embryol.. Med. Univ.. Tiizoltd u. 58. BUDAPEST IX. Hungary a Early morphogenesis. Gallus domesticus (Aves) HI RADZIKOWSKI, St. M.Sc. — Inst, of Zool., Warsaw Univ., Krakowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Studies on DNA and RNA synthesis. Chilodonella cucullulixs (Ciliata) h Conjugation and polytene chromosomes in the exconjugants. Chilodonella cucullulus (Ciliata) RADZINSKAYA, Miss L. I. Cand.biol.sci. — Lab. of Developm. Biophys.. Inst, of Devel- opm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. RAEKALLIO, J. M.D., Prof. — Dept. of Forensic Med., Univ. of Turku, Kiinamyllynkatu 10. TURKU 3. Finland a Biochemical characterization of enzymes appearing in early wound healing. Rattus spec, Cavia spec. (Rodentia) (in collaboration with P.-L. MAKINEN) b Histochemical studies on bone regeneration (fracture healing). Rattus spec, Cavia spec. (Rodentia) (in collaboration with P.-L. MAKINEN) RAFFERTY, K. A., Jr. Ph.D., Prof. — Dept. of Anat., School of Med.. Johns Hopkins Univ., 709 N. Wolfe St., BALTIMORE, Md. 21205, U.S.A. RAGOZINA, Mrs. M. N. Dr.biol.sci. — Inst, of Evol. Morphol. and Ecol. of Anim., Acad. of Sci. of the U.S.S.R.. Lenin Ave. 23. MOSCOW V-71, U.S.S.R. RAISMAN, J. S. — Inst, de Biol., Univ. Nac de Tucuman, Chacabuco 460. S. M. de TUCU- MAN, Argentina a Lytic substances in spermatozoa. Bufo arenarum (Anura) RAJTOVA, Miss V. M.V.Dr. — Anat. Inst, der Vet.-Med. Fak., Komenskeho 71, KOSICE, Czechoslovakia a Ossifikation des Skeletts, insbesondere des Primordialkraniums. Cavia porcellus (Rodentia) RAMASWAMI. L. S. D.Sc, Prof. — Dept. of Zool.. Univ. of Rajasthan, JAIPUR. India RAMENSKAYA, Mrs. G. P. Cand.biol.sci. — Lab. of Developm. Cytogenet., Inst, of Developm. Biol.. Acad, of Sci. of the U.S.S.R., 26 Vavilov St.. MOSCOW V-133. U.S.S.R. RAMSEY, Miss E. M. M.D. — Dept. of Embryo!., Carnegie Inst, of Washington, 115 W. University Parkway. BALTIMORE, Md. 21210. U.S.A. a Placentation; study of placental structure, development and vasculature. Macaca mulatta. Homo sapiens (Primates) b Determinations of blood, amniotic and intervillous space pressures throughout pregnancy. Macaca mulatta (Primates) c Anatomical and radiological studies of circulation in the maternal placenta. Macaca Mulatta, Homo sapiens (Primates) (in collaboration with M. W. DONNER and H. R. MISENHEIMER) RAMUS. J. S. Ph.D. — Dept. of Biol.. Khne Biol. Tower. Yale Univ.. NEW HAVEN, Conn. 06520, U.S.A. a Experimental determination of environmental factors which induce morphogenesis: the formation of a fleshy "bud" from a filamentous juvenile. Pseudogloiophloea confusa (Nemaliales, Flocideophycidae, Rhodophyta) RANGA RAO, K. Ph.D. — Dept. of Biol., Tulane Univ.. NEW ORLEANS. La. 70118, U.S.A. a The responses of chromatophores of zoea, megalopa and adult to purified chromato- phorotropins. Ilea pugilator (Decapoda, Crustacea) b A study on the control of pigmentation in regenerating appendages. Ilea pugilator, Cam- barellus shufeldti (Decapoda. Crustacea) RANZI, S. Ph.D., Prof. — Lab. di Zool.. Univ. di Milano. Via Celoria 10. 20133 MILANO. Italy • RANZOLI, F. Dr., Prof. — 1st. di Zool., Univ. di Catania, Via Androne 81, 95124 CATANIA, Italy a Gametogenesis and sexuality. Electra posidoniae (Ctenostomata, Bryozoa) RAO, K. V. M.Sc. — Dept. of Zool., Univ. of Delhi, DELHI-7. India RAO. S. R. V. Ph.D. — Dept. of Zool., Univ. of Delhi, DELHI-7. India RAPOLA, M. H. J. M.D. — Children'^ Hospital, Univ. ol Helsinki, 11 Stenback St., HELSINKI 29, Finland a Sex tract differentiation; organ culture. Mus musculus (Rodentia) b Teratology. Homo sapiens (Primates) RAPPAPORT. R.. Jr. Ph.D.. Prof. — Dept. of Biol. Sci.. Union College. SCHENECTADY, N.Y. 12308. U.S.A. a Comparative micrurgical studies on cytokinesis: extending present methods to a variety of experimental material and devising new forms of physical experimentation. MarinO' gammarus obtusatus (Gammaridae, Crustacea), Echinarachnius parma (Echinoidea), Rana pipiens (Anura) RASCH (MYRBERG), Mrs. E. M. Ph.D., Prof. — Dept. of Biol., Marquette Univ.. 530 North 15th St.. MILWAUKEE, Wis. 53233, U.S.A. a Atypical nucleoprotein synthesis during larval development. Sciara coprophila (Diptera) b Cytochemistry and fine structural analysis of puffs in giant chromosomes. Sciara copro- phila (Diptera) 142 RAUNICH, L. Ph.D.. M.D., Prof. — 1st. di Anat. Comp., Univ. di Ferrara, Via Scienze 17, 44100 FERRARA. Italia a Morphological and biochemical aspects of embryonic and foetal blood cell differentiation. (Vertebrata) b Hemopoietic factors during development. (Anura), Gallus gallus (Aves) RAVEN. Chr. P. Ph.D.. Prof. — Zool. Lab.. State Univ. of Utrecht, Janskerkhof 3. UTRECHT, Netherlands • a Maturation divisions of eggs. Various spp. (Gastropoda) b Application of information theory to oogenesis and embryonic development, c Morphology of the head region in cyclocephalic embryos. Limnaea stagnalis (Gastropoda) d Cortical morphogenetic field and early ooplasmic segregation. Various spp. (Gastropoda) e Transfer of information from egg follicle to oocyte. Various spp. (Gastropoda) RAWLES (SPURBECK). Mrs. M. E. Ph.D. — 4000 North Charles St., BALTIMORE. Md. 21218. U.S.A. • a The origin and development of regional specialization in the integumentary system. Gallus gallus (Aves) RAY. A. K. M.Sc. — Cell Research Unit. Dept. of Zool.. Univ. Coll. of Sci. and Technol.. 35 Ballygunje Circular Rd., CALCUTTA- 19. India RAYCHOWDHURI. S. M.Sc. — Cell Research Unit, Dept. of Zool., Univ. Coll. of Sci. and Technol., 35 Ballygunje Circular Rd.. CALCUTTA- 19. India RAYMOND. G. M.es Physiol. — Lab. de Physiol. Anim.. Fac. des Sci., Univ. de Poitiers, 40 Av. de Recteur Pineau. 86 POITIERS, France a Ionic contents of the embryonic heart. Rattus norvegicus (Rodentia) RAYNAUD. A. Dr.es Sci. — Serv. d'Embryol. Exper. de I'lnst. Pasteur, 20 rue des Moulins, 95 SANNOIS. France • a Researches on the normal development of the genital tract in the embryo. Anguis Iragilis. Lacerta viridis (Lacertilia); Tropidonotus tessellata. Viper a aspis (Ophidia) b Effects of the destruction with X-rays of the anlage of the hypophysis. Anguis fragilis (Lacertilia) c Researches on the rotation of the egg in the uterus and the orientation of the axis of the embryo. Anguis fragilis (Lacertilia) d Researches on the development of the limb buds (Lacerta viridis, L. sicula) and on the factors involved in the arrest of development of limb buds. Anguis fragilis (Lacertilia) e Researches on the development of the phallus. Lacerta viridis, Anguis fragilis (Lacertilia), Tropidonotus tessellata (Ophidia) f Researches on the function of endocrine glands in the embryo. Anguis fragilis, Lacerta viridis (Lacertilia), Tropidonotus tessellata (Ophidia) g Researches on the capacities of differentiation in vitro of anlagen of the genital tract. Anguis fragilis, Lacerta viridis (Lacertilia), Tropidonotus tessellata (Ophidia) h Effects of sexual and gonadotropic hormones on the sexual differentiation of the embryo. Anguis fragilis, Lacerta viridis (Lacertilia), Tropidonotus tessellata (Ophidia) i Comparative embryology of the phallus. (Lacertilia; Chelonia) (in collaboration with C. PIEAU) j Research on RNA and DNA synthesis of epidermal and mesodermal cells in the limb buds. Anguis fragilis, Lacerta viridis (Lacertilia) (in collaboration with J. VASSE) k Effects of X-rays on embryonic development. Lacerta viridis, Anguis fragilis (Lacertilia) (in collaboration with C. PIEAU) RAYNAUD (CHAULIN-SERVINIERE). Mrs. J. Dr.es Sci. — - Serv. d'Embryol. Exper. de rinst. Pasteur, 20 rue des Moulins, 95 SANNOIS, France a Histochemical researches on the functional differentiation of the endocrine glands in the embryo. Anguis fragilis (Lacertilia) b Culture in vitro of the anlage of the sub-maxillary gland. Mus musculus (Rodentia) c Histochemical researches on the limb bud. Anguis fragilis, Lacerta viridis (Lacertilia) RAZEK. H. A. M.D. — Dept. of Anat., Univ. of Bern, 26 Biihlstr., CH-3012 BERN, Switzerland a Comparative placentation. (Mammalia) REAMS, W. M., Jr. Ph.D., Prof. — Dept. of Biol.. Univ. of Richmond, RICHMOND, Va. 23173. U.S.A. a Effects of tissue environment on pigment cell morphogenesis. Gallus domesticus (Aves), Mus musculus (Rodentia) b Factors affecting pigment behaviour in the skin. Gallus domesticus (Aves), Mus musculus (Rodentia) c The Langerhans cell: origin and differentiation. Mus musculus (Rodentia) d Immunochemical studies on the origin of Langerhans cells. Mus musculus (Rodentia) REDMAN. R. S. Ph.D.. Prof. — Dept. of Oral Biol., School of Dent., Univ. of Washington. SEATTLE, Wash. 98105, U.S.A. 143 a Development of parotid gland from appearance of anlage in u t e r o to adult or mature state (100 days postnatally) : correlation of biochemical (exocrine enzymes, protein, RNA and DNA in crude homogenates of the gland) and morphologic (light and electron micro- scopic) observations; effects of dietary changes on the developmental pace. Rattiis rattus (Rodentia) REEDER, R. H. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210. U.S.A. a Regulation of nucleic acid synthesis in early development. Xenopus laevis (Anura) REES (WALLEY), Mrs. L. J. Ph.D. — Marine Sci. Labs., Univ. Coll. of N. Wales, MENAI BRIDGE, Anglesey, Wales. U.K. REESE, D. H. M.S. — Biol. Div.. Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. a Mechanism of in vitro activation of RNA synthesis in the iris. Triturus viridescens (Urodela) h Control of depigmentation in iris cells in culture. Triturus viridescens (Urodela) REMBOLD, H. Dr.rer.nat., Pr.Doz. — Max-Planck-Inst. f. Biochem., Goethestr. 31, 8- MUNCHEN-15, W.Germany a Isolation of the determining principles from royal jelly, responsible for queen establishment. -4pi5 melli[ica (Hymenoptera) b Biochemical aspects of queen determination; comparative studies on enzyme activities, mitochondria, protein and nucleic acid synthesis in queens and workers. Apis mellifica (Hymenoptera) c Biochemical function of biopterin in development; metabolic studies with C14-pteridines. Apis mellifica (Hymenoptera) REMENAR, M. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Submicroscopic and cytochemical studies on cleavage. Mus rattus (Rodentia) RENFREE, Miss M. B. B.Sc. — Dept. of Zool., School of Gen. Studies, Australian Nat. Univ., P.O. Box 4, CANBERRA, A.C.T. 2600, Australia a Physiology of the placenta. Macropus eugenii (Marsupialia) RENNELS, E. G. Ph.D., Prof. — Dept. of Anat., The Univ. of Texas Med. School at San Antonio, 7703 Floyd Curl Drive, SAN ANTONIO, Tex. 78229, U.S.A. a The effect of benzpyrene feeding on reproduction; gross malformations. Mus norvegicus albinus (Rodentia) REPORTER. M. C. Ph.D. — Charles F. Kettering Research Labs., 150 E. South College St.. YELLOW SPRINGS, Ohio 45387, U.S.A. a Metabolic characteristics of the early embryo. Callus domesticus (Aves) h Energy transfer processes in the early embryo and in monolayer cultures. Gallus domes- ticus (Aves) c Energy transfer processes in cell-cell interactions in monolayer cultures. Rattus rattus (Rodentia) RESSOUCHES (SELMES), Mrs. A.-P. Dr.Biol.anim. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Developpement embryonnaire. Pissodes spec. (Coleoptera) REVERBERI, G. D.Sc, Prof. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18. 90123 PALERMO, Italy • a The role of some enzymes in embryonic development, (marine Invertebrata) b Free amino acids in embryonic development, c Analysis of eggs by electron microscopy, (marine Invertebrata) RfiVfiSZ-FERENCZY, Mrs. E. M.D. — Dept. of Anat., Univ. of Bern, 26 Buhlstr., CH- 3012 BERN, Switzerland a Radiobiology, normal embryology. Homo sapiens (Primates) b Radiobiology, experimental embryology. 1. genetics; 2. placentology. Mesocricetus auratus (Rodentia) REYER, R. W. Ph.D., Prof. — Dept. of Anat., Med. Center, West Virginia Univ., MORGANTOWN, W.Va. 26506, U.S.A. • a An experimental analysis of lens 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 viridescens, Ambystoma punctatum (Urodela) b A study of the coordinate induction systems operating in the development of the em- bryonic lens. Triturus viridescens, Ambystoma punctatum, A. mexicanum (Urodela) c Studies on DNA synthesis, cell division and cell migration during lens and neural retina regeneration using thymidine-H^. Triturus viridescens (Urodela) d A study of stimulating factors common to lens and limb regeneration. Triturus viridescens (Urodela) REYNAUD, G. R. Dr.spec. — Lab. de Morphogenet. Anim., Fac. des Sci., 1 Place Victor Hugo, 13 MARSEILLE 3, France a Etude des relations entre soma et germen. (Aves) REYNOLDS, S. R. M. Ph.D., D.Sc, Prof. (Emer.) — Dept. of Obstet. and Gynecol. Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104, U.S.A. 144 a Fetal vascular physiology. Homo sapiens. Lepns spec, Ovis spec. (Mammalia) b Uterine contraction patterns. Homo sapiens (Primates) c Pulmonary vasculature, fetal and neonatal condition. Cavia spec. (Rodentia), Ovis spec. (Artiodacfyla) d Architecture of umbilical blood vessels, distended and nondistended. Homo sapiens (Pri- mates) e Development of chemoreceptor function. Ovis spec. (Artiodactyla) f Sensory input and homeostasis related to fetal adaptation to intra-uterine environment. Ovis spec. (Artiodactyla) g Effect of psychobiological stress and ageing on fertility. Rattus rattus (Rodentia) h Placentogenesis. Macaca mulafta. Homo sapiens (Primates) i Placental blood flow. Macaca mulatta (Primates) REYNOLDS (KING), Mrs. W. A. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W.Polk St., CHICAGO, 111. 60612, U.S.A. a Metamorphosis: uptake and localization of thyroxine in tissues and cells, histochemistry of adenohypophysis. collagen deposition. Rana pipiens (Anura) b Fetal environment: fetal contributions to amniotic fluid, transport of insulin and cyclamate by hcmochorial placenta. Macaca mulatta, M. speciosa (Primates) REYSS-BRION (DUCREAU), Mrs. M. Dr.es Sci. — In.st. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Influence des rayons X sur le developpement embryonnaire. Pleurodeles waltlii (Ucodela). Gallus spec. (Aves) h Influence des rayons X sur le pouvoir inducteur de la gastrula. Pleurodeles waltlii (Urodela) c Etude de I'effet des rayons X sur le developpement de la peau embryonnaire. Gallus domesticus (Aves) REZENDE, Miss E. S. B.Sc. — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4°andar, C.P. 253, BELO HORIZONTE, M.G., Brazil a Study of the nuclear size and DNA content (cytophotometry) of different organs in embryo and larva. Ascidia nigra (Ascidiae) b Study of the DNA synthesis with autoradiography and cytophotometry of endometrium, myometrium and placenta. Mus musculus (Rodentia) REZNIK, M. M.D. — Lab. d'Anat. Pathol., Fac. de Med., Univ. de Liege, 1 rue des Bonnes- Villes, LIfiGE, Belgium (no embryological work in progress) RIBBERT, D. — Zool. Inst, der Westf. Wilhelms-Univ., Badestr. 9, 44 MONSTER/Westf.. W.Germany a Gene activation during morphogenesis in the bristle-forming cells of species possessing polytene chromosomes. Calliphora erythrocephala, Sarcophaga carnaria (Diptera) RICE, A. L. Ph.D. — Dept. of Zool., British Museum (Nat. Hist.), Cromwell Rd. LON- DON S.W.7, England a Development of laboratory reared animals. Homona barbata. Dromia personata, Corystes cassivelaunus (Decapoda, Crustacea) RICHARDS, Mrs. C. M. Ph.D. — Dept. of Zool., Univ. of Michigan, ANN ARBOR Mich. 48104, U.S.A. a The production of inbred strains using gynogenetic techniques of two types: 1. com- bination of egg nucleus plus second polar body. 2. inhibition of the first cleavage of a haploid egg to produce completely homozygous diploids. Rana pipiens (Anura) h A study of the genetics of various mutants including albino, blue, melanoid, as well as mutants uncovered by gynogenesis. Rana pipiens (Anura) RICHTER, R. H. H. Ph.D. — Univ.-Frauenklinik, Schanzeneckstr. 1, BERN, Switzerland RICKENBACHER, ]. Dr.med., Prof. — Anat. Inst, der Univ., Gloriastr. 19, 8006 ZURICH, Switzerland RIECK, A. F. Ph.D.. Prof. — Dept. of Physiol., School of Med., Marquette Univ. 561 N 15th St., MILWAUKEE, Wis. 53233, U.S.A. a Studies about levels of control during early development (through early gastrula), using ultraviolet as a damaging agent. Echinarachnius parma (Echinoidea) b Differentiation of epidermal cells under conditions of cell renewal following injury. Mus musculus (Rodentia) RIEGERT, P. W. Ph.D. — Dept. of Biol., Univ. of Saskatchewan, Regina Campus, REGINA, Sask., Canada RIKMENSPOEL, R. Ph.D.. Prof. — Dept. of Biol. Sci., State Univ. of New York at Albany, ALBANY, N.Y. 12203, U.S.A. a Control mechanisms of sperm motility RIMNICEANU, Mrs. C. Dr.med., Prof. — Centrul de Embriol. Norm. §i Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI^OARA, Rumania a Histochemistry of the placenta. Homo sapiens (Primates) RINALDI, Miss A. M. Dr.Biol. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy a Messenger RNA in unfertilized eggs. Arbacia punctulata (Echinoidea) 145 RINALDI. Miss L. Dr.Biol. — 1st. di Zool., Univ. di Parma. Via Universita 12, 43100 PARMA, Italy a Experimental morphology of bone induction and inhibitory action of thalidomide, (in collaboration with B. SCHREIBER) RINAUDO, M. T. Prof. — Inst, of Biochem., Univ. of Turin, Via Giolitti 34, 10123 TORINO, Italy a Induction by prolactin of thyroid activation in larvae at advanced metamorphic stages. Buh bufo (Anura) (in collaboration with R. BRUNO. Miss A. GUARDABASSI, M, OLIVERO, E. CAMPANTICO and C. GIUNTA) RISLEY, P. L. Ph.D., Prof. — Dept. of Biol., Univ. of Oregon, EUGENE, Ore.. U.S.A. RITSCHARD, R. L. Ph.D. — Biol. Sci. Dept., Cahf. State Polytechn. Coll., SAN LUIS OBISPO, Calif. 93401, U.S.A. a Histochemical study of epithelio-mesenchymal relationships in skin development. (Aves, Mammalia) b Autoradiography and histochemistry of developing placentae. (Mammalia) RIVERA, Miss E. M. Ph.D., Prof. — Dept. of Zool., Michigan State Univ., EAST LAN- SING, Mich. 48823, U.S.A. a Analysis of hormone actions on mammary gland development in organ culture. Mas musculus (Rodentia) RIZKI, T. M. Ph.D., Prof. — Dept. of Zool.. Univ. of Michigan. ANN ARBOR. Mich. 48104, U.S.A. a Mutant genes regulating the function and structure of fat cells in the functional differen- tiation of the fat body (fluorescence and electron microscopy). Drosophila melanogaster (Diptera) h The effects of various nucleic acid analogs in relation to morphogenesis, especially those substances which can serve as mutagens. Drosophila melanogaster (Diptera) RIZZOLI. C. M.D.. Prof. — Inst, of Histol. and Gen. Embryol.. Univ. of Bologna, Via Belmeloro 8. BOLOGNA. Italy ROBERT, M. Dipl.Natw. — Inst, fur Genet., Univ. des Saarlandes, 66 SAARBRUCKEN 11, W.Germany a Regulation of gene activity and histone cytochemistry in giant chromosomes. Chironomus fhummi, Ch. tentans (Diptera) ROBERT, Miss M.-F. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois, 54 NANCY, France ROBERTS, A. Ph.D. — Dept. of Zool.. Univ. of Bristol. BRISTOL BS8 lUG. England a Electrophysiology of embryos and larvae. (Amphibia) ROBERTS. L. W. Ph.D., Prof. — Dept. of Biol. Sci., Univ. of Idaho, MOSCOW, Idaho 83843, U.S.A. a Experimental induction of wound vessel member differentiation. Coleus blumei (Labiatae) (in collaboration with S. BABA, Kyoto, Japan) b Histochemical localization of enzymes during wound vessel member differentiation. Coleus blumei (Labiatae) c Morphogenesis and histochemistry in tissue culture. (Angiospermae) ROBERTSON, B. M.D. — Dept. of Pediat. Pathol., KaroUnska Hosp., 10401 STOCK- HOLM, Sweden a The pathology and anatomy of pulmonary vasculature in congenital heart malformations. particularly transposition of the great arteries. Homo sapiens (Primates) ROBERTSON (PATON), Mrs. E. M. — Inst, of Anim. Genet.. Univ. of Edinburgh, West Mains Rd., EDINBURGH. EH9 3JN, Scotland. U.K. a Development of imaginal buds. Drosophila spec. (Diptera) (in collaboration with C. H. WADDINGTON) ROBERTSON, G. G. Ph.D., Prof. — Dept. of Anat.. Coll. of Basic Med. Sci.. Med. Units, Univ. of Tennessee, 62 S.Dunlap St., MEMPHIS, Tenn. 38103, U.S.A. • a Virus-induced abnormalities in embryos. Callus domesticus (Aves) ROBERTSON. H. A. Ph.D. — Anim. Research Inst., Dept. of Agric, Centr. Exper. Farm, OTTAWA, Ont., Canada a Role of pituitary gonadotrophins in the development and ovulation of ovarian follicles in implantation. Rattus norvegicus (Rodentia), Ovis aries (Ariiodactyla) ROBERTSON, P. B. M.S. — Inst, of Marine Sci., Univ. of Miami, 1 Rickenbacker Cause- way, Virginia Key. MIAMI, Fla. 33149, U.S.A. ROBINSON. J. C. M.D..Ph.D. — Lab. of Biomed. Sci.. Natl. Inst, of Child Health and Human Developm.. Natl. Inst, of Health, BETHESDA, Md. 20014, U.S.A. a Characterization of pregnancy-associated enzymes in maternal blood plasma. Homo sapiens (Primates) ROBISON, O. W. Ph.D., Prof. — Dept. of Anim. Sci., North Carolina State Univ., P.O. Box 5127, RALEIGH. N.C. 27607. U.S.A. a Genetic and maternal effects on development of the neonate; cross-fostering, automatic sow and standard statistical analysis. Sus scrofa (Ariiodactyla) h Study of early embryonic development by embryo transfer; factors contributing to uterine capacity. Sus sccofa (Ariiodactyla) 146 ROCKSTEIN. M. Ph.D.. Prof. — Dept. of Physiol.. Univ. of Miami, P.O. Box 875. Bis- cayne Annex, MIAMI, Fla. 33152, U.S.A. a Physiological basis of aging, growth and metamorphosis. Musca domestica (Dipfera) h Metachemogenesis — post emergence biochemical maturation. ( Holometabola, Insecfa) c Hereditary vs. environmental factors in longevity. (Dipfera, Hymenopfera) d Effects of X-irradiation on development, aging and longevity. Musca domestica (Dipteca) RODRIGUES CORREIA, Mrs. M. J. M.D. — Inst, de Histol. e Embriol.. Fac. de Med., Av. Prof. Egas Moniz, LISBOA 4. Portugal a Ultrastructure of the embryonic mesonephros. Gallus domesticus (Aves) h Ultrastructural cytogenesis of the embryonic myocardium. Gallus domesticus (Aves) c Action of ionizing radiations upon the embryonated egg. Gallus domesticus (Aves) (in collaboration with M. J. XAVIER MORATO) ROEDER, R. G. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. Uni- versity Parkway. BALTIMORE. Md. 21210. U.S.A. a Biochemical studies of early development. Xenopus laevis (Anura) (in collaboration with D. D. BROWN) ROELS, F. M.D. — Lab. of Anat.. Univ. of Gent, Ledeganckstr. 35. GENT, Belgium ROGERS, K. T. Ph.D. — Dept. of Anat., School of Med.. Univ. of California, SAN FRANCISCO. Calif. 94122, U.S.A. • a Development of the Na+ + K+-activated ATPase system in the retina and the ciliary body. Gallus domesticus (Aves), Oryctolagus cuniculus (Lagomorpha) ROGUEDA (VIGNAU). Mrs. J. Dr.Biol.anim. — Lab. de Zool. Experim., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Recherches experimentales sur la morphogenese embryonnaire de la tete. Carausius spec. (Orthoptera) ROGULSKA. Miss T. Ph. D. — Dept. of Embryol., Zool. Inst., Univ. of Warsaw, Kra- kowskie Przedmiescie 26/28, WARSZAWA 64, Poland a Origin and fate of primordial germ cells. Gallus domesticus (Aves), Mus musculus (Rodentia) h Regulative capacities of blastoderm. Gallus domesticus. Anas platyrhynchos domestica (Aves) ROKYTA, R. MUDr. — Inst. Pathophysiol., Med. Fac. Charles Univ.. Lidicka 1, PLZE55, Czechoslovakia a Development of different parts of medial geniculate body (GM), and its projection to the homolateral and contralateral cortex. Pelis domestica (Carnivora), Rattus norvegicus (Rodentia), Oryctolagus cuniculus (Lagomorpha) h Interhemispherical connections between subcortical auditory centres, especially between medial geniculate bodies in development. Felis domestica (Carnivora), Rattus norvegicus (Rodentia), Oryctolagus cuniculus (Lagomorpha) ROLLHAUSER. H. Eh-.med.. Prof. — Anat. Inst, der Univ. Munster. Vesaliusweg 2-4. 44 MONSTER/ Wesf., W.Germany a Pre- and postnatal development of phenol red excreting capacity of the proximal renal tubules in relation to ultrastructural tubule cell differentiation (vital staining, freeze-drying method, electron microscopy). Mus rattus (Rodentia) ROLLHAUSER (TER HORST). Mrs. J. O. B. Dr.rer.nat. — Anat. Inst., Univ. Munster, Vesaliusweg 2-4, 44 MUNSTER/ Westf., W.Germany (no embryological work in progress) ROLLINS, E. A. Ph.D. — Dept. of Biol.. State Univ. of New York at Albany, ALBANY, N.Y. 12203, U.S.A. a Control of tissue-specific RNA and protein synthesis in the early embryo. Rana pipiens (Anura) b Characterization of chromatin. DNA. RNA and protein at specific developmental stages. employing cell or organ culture and nuclear isolation. Rana pipiens (Anura) ROMANOFF, A. L. Ph.D.. Prof. (Emer.) — Lab. of Chem. Embryol.. Cornell Univ., c/o 105 Rice Hall. ITHACA. N.Y. 14850, U.S.A. a Chemical embryology. (Aves) h Developmental pathology. (Aves) ROMANOVA. Mrs. L. K. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R.. Baltiyskaya St. 8, MOSCOW A-315. U.S.S.R. ROMANOVSK?, A. RNDr., C.Sc, Prof. — Dept. of Exper. Zool., Charles Univ., Vinicna 7. PRAHA 2. Czechoslovakia a Proteins and antigens in early development. (Amphibia) (in collaboration with J. MACH A. J. PALECEK and A. MACELA) b Transplantation of nuclei in relation to the development of antigenic characteristics. (Amphibia) (in collaboration with F. SLADECEK) ROMIJN. C Dr., Prof. — Lab. of Veter. Physiol., State Univ. of Utrecht, Alex. Numan- kade 93, UTRECHT, Netherlands a Physiology of respiration in embryos under influence of environmental conditions. Gallus domesticus (Aves) (in collaboration with Miss W. LOKHORST) 147 ROOS, T. B. Ph.D., Prof. — Dept. of Biol. ScL, Dartmouth College, HANOVER, N.H. 03755, U.S.A. a Biochemical and morphological differentiation of the adrenal cortex from the anlage to the functional state (12 to 16 days, stages 19-33) (electron microscopy, histochemistry and organ culture). Rattas noruegicus (Rodenfia) b Development of pituitary control of endrocrine function; organ culture studies of in- dependent differentiation of mesonephric ridge components in order to determine their interactions and competence and their response to pituitary and neural control. Rattus noTvegicus (Rodentia) ROOSEN (RUNGE), E. C. M.D., Prof. — Dept. of Biol. Struct., School of Med., Univ. of Washington, SEATTLE, Wash. 98105, U.S.A. ROSA C F. A — Dept. de Biol., Fac. Filos. Cienc. e Let. de Ribeirao Preto, Univ. de Sao Paulo, Caixa Postal 759. RIBEIRAO PRETO, S.P., Brazil a Analysis of regional distribution of differentiation tendencies in the presumptive prosence- phalon. Tritucus alpestris (Urodela) ROSATE, A. — 1st. di Anat. Umana Norm, della Univ., Corso M.D'Azeglio 52. 10126 TORINO, Italy ROSE S M. Ph.D., Prof. — Lab. of Developm. Biol., Dept. of Anat., Tulane Univ., F.' Edward Hebert Center, BELLE CHASSE, La. 70037, U.S.A. • ROSELER, P.-F. Dr. — Stadt. Museum fur Naturk., Gerberau 32, 78 FREIBURG i.Br., W.Germany ROSENBAUM, J. L. Ph.D. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. a Relation between flagellar protein precursor pools and regeneration kinetics studied in amino acid-requiring and paralyzed flagella mutants by use of inhibitors of protein syn- thesis (cycloheximide), assembly (colchicine, vinblastine), pulse-labeling; isolation, char- acterization, and in vitro polymerization of flagellar microtubule subunits; growth zones of microtubules, in vivo and in vitro by autoradiography. (Chlamydomonas reinhardi (Volvocales, Chlorophyta), Tetrahymena pyriformis (Ciliata) ROSENBERG, A. J. Prof. — Lab. d'Anat. Comp., Fac. des Sci., 7 Quai Saint Bernard, 75 PARIS 5e, France a Developmental biochemistry ROSENBERG, Miss M. R. M.D., Ph.D. — Dept. of Genet., Albert Einstein Coll. of Med., Yeshiva Univ., Eastchester Rd. & Morris Park Ave., NEW YORK, Bronx, N.Y. 10461, U.S.A. a Molecular basis for the fetal-to-adult hemoglobin synthesis switch. Mus musculus (Ro- dentia) h Genetic control of sperm differentiation. Mus musculus (Rodentia) ROSI, Miss G. Dott.Sci.Biol. — 1st. di Biol. Gener., Fac. di Med., Via del Giochetto, 06100 PERUGIA, Itaha a Rapporti tra rigenerazione e neurosecrezione. Dugesia lugubris (Turbellaria), Allolobo- phora caliginosa (Oligochaeta) b Influenza di alcune sostanze simpaticomimetiche sulla rigenerazione. Dugesia lugubris (Turbellaria). Allolobophora caliginosa (Oligochaeta) ROSS, G. T. B.A. — Dept. of Zool., Coll. of Sci., Univ. of Western Ontario, LONDON, Ont., Canada a Effect of actinomycin D on developmental processes. (Teleostei) ROSS, K. F. A. D.Phil. — Muscular Dystrophy Res. Labs., Newcastle Gen. Hosp., NEWCASTLE upon Tyne NE4 6BE, England a The quantitative measurement of RNA in normally differentiating myoblasts growing in tissue culture, and in comparable myoblasts cultured from dystrophic muscle. Gallus domesticus (Aves). Mus musculus (Rodenfia), Homo sapiens (Primates) (in collaboration with D. E. JANS) b Measurement of the uptake by myoblasts of RNA fractions added to tissue culture media. Gallus domesticus (Aves), Mus musculus (Rodentia), Homo sapiens (Primates) (in col- laboration with D. E. JANS) ROSS. L. M. M.D., Ph.D. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex. 77550, U.S.A. a Production of abnormalities of the thymus using teratogens (vitamin A, cortisone). (Mammalia) h The role of the embryonic tongue in the process of closure of the secondary palate. (Mammalia) ROSSI, A. Dr. — 1st. di Anat. Comp. "Battista Grassi", Fac. di Sci., Univ. di Roma, Via A. Borelli 50, 00161 ROMA, Italy a Determination in the neural plate. Rana esculenta. Bufo bufo (Anura) ROSSINI, Miss M. C. Dr.nat.sci. — 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, BOLOGNA (103), Italy ROSTAND, J. Prof. — 29 rue Pradier, 92 VILLE D'AVRAY, France • a Parthenogenese et gynogenese; regulation chromosomique par le froid. (Amphibia) 148 b Mutations (polydactylie, ectrodactylie. etc.) et anomalies provoquees par le milieu ex- terieur (principalement "Anomalie P"). (Amphibia) c Action protectrice de la glycerine a legard de la congelation des cellules spermatiques. (Amphibia) r r? i i t c ROSTEDT. Miss I. B. M.Sc. — Lab. of Exper. Embryol.. Dept. of Zool., Univ. ot Helsinki, Arkadiankatu 7, HELSINKI 10, Finland a Heterogeneous inductors on embryonic ectoderm. Gallus domesticus (Aves) h Early embryonic development. Gallus domesticus (Aves) ROTH. T. F. Ph.D. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA, Calif. 92037. U.S.A. a Cytochemistry of meiotic development ? r c c n ROTT Mrs N. N. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Changes of mitotic cycle in early embryogenesis as related to morphogenetic nuclear function and synthesis of RNA. Strong ylocentcotus nudus (Echinoidea), Misgurnus fossilis, Salmo gairdneri. Cyprinus carpio. Esox lucius (Teleostei), Ambystoma mexicanum (Uro- dela) ROUCH. R. — Lab. Souterrain du C.N.R.S., 09 MOULIS (Ariege), France ROULSTON. W. J. M.Sc. — Long Pocket Labs., C.S.I.R.O. Div. of Entoraol., Meiers Rd., INDOOROOPILLY 4068. Brisbane, Australia (no embryological work in progress) ROUSSEL, C. Dr.en Med. — Lab. d'Histol.-Embryol. A. Fac. de Med., 45 rue des Sts. Peres, PARIS Vie. France a Mode d'action de certaines substances teratogenes (Triton WR 1339). (Mammalia) ROUX, Ch. Dr.en Med., Prof. — Lab. d'Embryol., CHU Saint-Antoine, 27, rue Chaligny, 75 PARIS 12e, France a Teratogenic action of inhibitors of cholesterol synthesis. Mus musculus, Rattus norvegicus (Rodentia), (Primates) b Morphogenesis of cardiac malformations. Mus musculus, Rattus norvegicus (Rodentia) c Virus and gestation. Rattus norvegicus (Rodentia) d Chromosome aberrations and teratogenic action of different drugs such as thalidomide and cytostatics. Rattus norvegicus, Mus musculus (Rodentia), Orycfolagus cuniculus (Lago- morpha) ROUX, J. P. Lic.de Sci.Nat. — Lab. de Zool, Fac. des Sci. de Grenoble, Cedex 53, 33 GRENOBLE. France rr j , > a Histochemical and ultrastructural study on teeth buds. Pleurodeles waltlii (Urodela) ROWINSKI. P. Prof. — 1st. di Fisiol. gen. e spec, degli Anim. domest. e Chim. Biol., Univ. di Torino, TORINO, Italy ^^^^ ROWLEY, D. A. Prof. — Dept. of Biol., Div. of Biol. Sci.. Univ. of Chicago. CHICAGO, 111. 60637, U.S.A. a Cell interactions and homeostasis in immune response ROWSON, L. E. A. M.R.C.V.S. — A.R.C. Unit of Reprod. Physiol, and Biochem., Univ. of Cambridge, 307 Huntingdon Rd., CAMBRIDGE, England a Ovum transplantation and artificial insemination. (Mammalia) RUBEN, L. N. Ph.D., Prof. — Biol. Dept., The Reed Inst., PORTLAND, Ore. 97202, U.S.A. , • a Amphibian neoplasia (physical and chemical factors affecting immunocompetence and its relation to lymphosarcoma transmissibility and development). Triturus viridescens, Xenopus laevis, Rana pipiens (Amphibia) RUBEN R J M.D. — Dept. of Otolaryngol., School of Med.. New York Univ., 550 First Ave'., Room H-314, NEW YORK, N.Y. 10016, U.S.A. RUCH, J. V. Dr.med., Dr.es Sci. — Inst. d'Embryol., Fac. de Med., 1 Place de 1 Hopital, STRASBOURG, France • a Chimioteratogenese (venins). (Aves) h Action d'un corticoide (phosphate de dexamethasone) in vivo et in vitro, f^t^es^; Mammalia) tvtc-iit RUDDLE, F. H. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. a Discrimination between genetic and epigenetic events in somatic cells in vitro by studying enzyme variants. Mus musculus (Rodentia) RQDEBERG, S. I. Ph.D. — Tornblad-Inst. for Comp. Embryol., Biskopsgatan 7, LUND, Sweden a Histochemistry of cerebellum during development. (Vertebrata) RUDNEVA, T. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26. MOSCOW B-133, U.S.S.R. Time reqularities of the maturation process; temperature effect upon maturation processes in vivo and in vitro. (Amphibia) (in collaboration with Mrs. T. A. DETTLAFF) RUDNICK, Miss D. Ph.D., — address unknown 149 RUGH, R. Ph.D., Prof. — Radiobiol. Res. Lab. Dept. of Radiol., Coll. of Physicians 5 Surgeons, Columbia Univ., 630 West 168th St., NEW YORK, N.Y. 10032, U.S.A. a Heterosis and X-irradiation tolerance. Mus musculus (Rodentia) h Sensitivity to irradiation of the fetal testes at different stages of development. 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) e Neuropathological effects of ionizing radiations on the fetus. (Mammalia) f Behavioral effects of the fetus X-rayed in utero. (Mammalia) g Heterosis and the development of irradiation congenital anomalies. (Mammalia) h Electroencephalographic analysis of brain following fetal irradiation. (Mammalia) RUMPLER, Y. Dr.en Med. — Inst. d'EmbryoL. Fac. de Med., 1 Place de I'Hopital, STRAS- BOURG, France a Action d'un antithyroidien in vivo et in vitro. (Aves; Mammalia) RUNNER, M. N. Ph.D., Prof. — Inst, for Developm. Biol., Univ. of Colorado, BOULDER, Colo. 80302, U.S.A. • RUNNSTROM, J. A. M. M.D., Ph.D., Prof. (Emer.) — The Wenner-Gren Inst.. Norrtulls- gatan 16, S-113 45 STOCKHOLM, Sweden • a The activation impulse in fertilization and artificial parthenogenesis. (Echinoidea) b Fine cell structure. (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 vegetal agents. (Echinoidea) e Extraction and fractionation of animalizing and vegetalizing substances. Paracentrotus lividus (Echinoidea) (in collaboration with S. HORSTADIUS, Uppsala) RUSAOUEN, Mrs. M. Dr. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE. France RUSCH, H. P. M.D.. Prof. — McArdle Lab. for Cancer Research. Univ. of Wisconsin, 450 N. Randall Ave., MADISON, Wis. 53706, U.S.A. a Biochemical events associated with growth and differentiation (sporixlation). Physacum polycephalum (Myxomycetae) RUSSO-CAIA, S. Prof.Inc. — 1st. di Istol. ed Embriol., Fac. di Sci., Univ. di Roma. Citta Universitaria. 00185 ROMA, Italy a Biochemical and cytochemical studies on the regression of the mesonephros. Gallus gallus (Aves) b Cytochemical and autoradiographic investigation on oogenesis. Mytilus edulis (Mollusca), Musca domestica (Diptera), Dytiscus marginalis (Coleoptera) c Biochemistry and histochemistry of metamorphosis. Mus domestica (Diptera) RUTH, R. F. Ph.D., Prof. — Dept. of Zool., Fac. of Sci., Univ. of Alberta. EDMONTON, Alta., Canada a Immunogenetic analysis of graft rejection and graft-versus-host reactions in the very young animal. Gallus gallus (Aves) h The origins of the immunoglobulins. Gallus gallus (Aves) c Origin of the immunologically competent cell. Gallus gallus (Aves) d Immunofluorescent localization of transplantation antigens in the developing animal. Gallus gallus (Aves) e The histologic and metabolic maturation of the primordia of the lymphoid system. Gallus gallus (Aves) RYABININA, Miss Z. A. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. RYCHTER, Z. MUDr. — Dept. of Histol., Charles Univ., U.nemocnice 3, PRAHA 2, Czechoslovakia RYCZKOWSKI, M. Dr. — Dept. of Plant Physiol., Jagellonian Univ., Grodzka 53. KRA- KOW, Poland a Physico-chemical and physiological properties of the developing ovule and embryo. (Mo- nocotyledonae. Dicotyledonae, Angiospermae; Gymnospermae) 1. Osmotic gradients in the developing ovule and embryo (thermoelectric method) 2. Changes in the osmotic value of the sap surrounding the developing embryo (thermo- electric method) 3. Physiological activity of the sap surrounding the developing embryo (Avena test) 4. pH of the developing embryo and the surrounding sap (RIM method) RYLAND, J. S. Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Singleton Park, SWAN- SEA, Glamorganshire, Wales, U.K. RZEHAK, K. Ph.D. — Dept of Biol, and Embryol., Acad, of Med., ul. Kopemika 7. KRAKOW, Poland SAAG. P. Th. M. van der M.Sc. — Hubrecht Lab. (Intern. Embryol. Inst.). Uppsalalaan 1, Universiteitscentrum "De Uithof", UTRECHT, Netherlands a Patterns of nucleic acid and protein synthesis associated with neural and endo-mesodermal competence in the blastula/gastrula stage. Amby stoma mexicanum (Urodela) (in col- laboration with P. D. NIEUWKOOP and Miss G. A. UBBELS) 150 SABBADIN. A. Dr., Prof. — 1st. di Biol. Anim., Fac. di Sci., Via Loredan 10, 35100 PADOVA, Italy a Differentiation of pigment cells. Botryllus schlosseri (Ascidae) h Differentiation of germ cells. Botryllus schlosseri (Ascidiae) SACARRAO, G. da FONSECA Dr.Sc, Prof. — Fac. de Ciencias, Museu Bocage, LISBOA. Portugal a Development of the epistellar body. Octopus spec, Argonauta spec. (Cephalopoda) h Development of the statocyst. (Cephalopoda) c Blastokinesis. Tremoctopus violaceus (Cephalopoda) SACK, W. O. D.V.M., Ph.D., Prof. — Dept. of Anat., Vet. Coll., Cornell Univ., ITHACA, N.V. 14850, U.S.A. a Establishing a comprehensive embryological slide collection of domestic and laboratory animals. Canis familiaris. Felis catus. Bos taurus. Ovis aries, Rattus rattus, Mus musculus. Cavia cobaya (Mammalia) (in collaboration with H. E. EVANS) b Developmental morphology. Canis familiaris (Carnivora), Bos taurus (Artiodactyla) SADOKOVA Miss I. E. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Regeneration of myocardium (biochemical study). Oryctolagus cuniculus (Lagomorpha) SAGAWA Y. Ph.D., Prof. — Harold L. Lyon Arboretum and Horticult. Dept., Univ. of Hawaii, HONOLULU, Hawaii 96822, U.S.A. a Developmental studies of ovule formation. (Orchidaceae) h Developmental studies of apical meristem explants. (Orchidaceae) c Studies of in vivo growth of pollen tubes. (Orchidaceae) SAKAI, H. Ph.D., Prof. — Dept. of Biophys. and Biochem., Fac. of Sci.. Univ. of Tokyo, 7-3-1 Hongo, Bunkyo-ku, TOKYO 113. Japan • a Cell division and cortical contractile protein. Pseudocentcotus depressus. Hemicentrotus pulcherrimus (Echinoidea) h Mitotic apparatus and a protein which catalyzes transhydrogen between the cell cortex and the mitotic apparatus. Pseudocentcotus depressus, Hemicentrotus pulcherrimus (Echi- noidea) SAKUN, Mrs. O. F. Cand.biol.sci. — Biol. Inst.. Leningrad State Univ.. LENINGRAD B-164. U.S.S.R. a Studies of the effects of pituitary gonadotropins on the various phases of oogenesis, with special reference to the correlations between meiosis and vitellogenesis. Salmo salar. Oncorhynchus gorbuscha. Coregonus lavaretus pidschian (Clupeiformes) . Acerina cernua (Perciformes. Teleostei) SALA, M. Dr.. Prof. — Dept. of Biol., Fordham Univ.. NEW YORK. Bronx. N.Y. 10458. U.S.A. , ^ ^ • SALAMATINA, Miss N. V. — Dept. of Biophysics, Inst, of Exper. Morphol., Acad, of Sci. of the Georgian S.S.R., 51 St. Kamo, TBILISSI 2, U.S.S.R. a Role of chemical intercellular interactions in regulation of the rate of cell multiplication and intercellular syntheses studied in cell cultures. (Vertebrata) SALAUN, Miss J. Dr.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S.. 49bis Av. de la Belle Gabrielle, 94 NOGENT-sur-MARNE, France a Formation experimentale d'embryomes homoplastiques et heteroplastiques. Callus gallus (Aves), Rattus rattus (Rodentia) h Influence reciproque des cellules cancereuses et embryonnaires reunies sur un meme bote. Rattus rattus, Mus musculus (Rodentia) SALLACH, H. J. Ph.D.. Prof. — Dept. of Physiol. Chem.. Univ. of Wisconsin. 1215 Linden Drive. MADISON, Wis. 53706. U.S.A. a Biochemical aspects of development and differentiation (enzyme changes; metabolism of carbohydrates and nucleic acids). Rana pipiens. R. catesbeiana (Anura) SALLES I M. de B.Sc. — Dept. de Biol. Geral. Inst, de Cienc. Biol, da U.F.M.G.. Rua Carangola 288 - 4° andar. C.P. 253. BELO HORIZONTE. M.G., Brazil a Electron microscope study of the germinal vesicle, with special reference to the ' juxta- nucleolar granules". Bulo paracnemis (Anura) SALOM6N de LEGNAME, Mrs. H. Dr.Biochem. — Inst, de Biol. Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Intermediate metabolism during early development. Bufo arenarum (Anura) h Mitochondria during embryogenesis. Bufo arenarum (Anura) SALTHE. S. N. Ph.D. — Dept. of Biol., Brooklyn Coll., Bedford Ave. and Ave. H. NEW YORK, Brooklyn, N.Y. 11210, U.S.A. a Mechanism of expansion of perivitelline fluid in the egg. Rana pipiens (Anura) b Study of the hatching enzymes. (Amphibia) c Development of lactic dehydrogenase isoenzymes. Rana pipiens, R. palustris (Anura) SALVATORELLI, G. Ph.D. — 1st. di Anat. Comp., Univ. di Ferrara. Via Scienze 17. 44100 FERRARA. Italia a Factors in foetal erythropoiesis. Gallus domesticus (Aves) h Erythropoiesis and leucopoiesis during metamorphosis. Bu[o bufo (Anura) 151 SALZGEBER, Miss B. Dr.es. Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle. 94-NOGENT-sur-MARNE, France — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, France • a Recherches sur Taction d'agents physiques et chimiques sur la differenciation 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), Mas spec. (Rodentia) d Etude des effects teratogenes (malformations de membres) obtenus 1) par I'yperite azotee (chlorethylamine), 2) par la thalidomide (phtalimidoglutarimide). Gallus spec. (Aves) e Recherches sur la genese des malformations de membres. Gallus domesticus (Aves) SAMANO BISHOP, Miss A. Dr. — Inst, de Biol., Univ. Nac. Autonoma de Mexico, MEXICO 20, D.F., Mexico SAMLIELLI, Miss C. Dr. — 1st. di ZooL, Univ. di Milano, Via Celoria 10, MILANO, Italy SANANES, Miss N. Lic.es Sci. — Inst. Natl, de la Sante et de la Rech. Med., Unite de Physiol, placentaire, Hop. Saint-Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e, France a Ultrastructure de la reaction deciduale (Mammalia) SANCHEZ (TEFF), Mrs. S. Dr.es Sci. — Lab. d'Histol., Fac. de Med.. 2 rue Ecole de Medecine, 34 MONTPELLIER, France a Oogenesis: synthesis of RNA and basic proteins (autoradiography with ^H orotic acid and "H lysine; electron microscopy). Paracentrotus lividus (Echinoidea) SANDAHL, B. M.D. — Tornblad Inst, for Comp. Embryol., Biskopsgatan 7, LUND, Sweden a Cytogenetics in spontaneously aborted embryos. Homo sapiens (Primates) SANDER. K. Ph.D., Prof. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 78 FREI- BURG, W.Germany • a Early stages of embryogenesis: epigenetics of segmentation pattern, blastokinesis. Euscelis plebejus (Cicadina, Homoptera), (Chironomidae, Diptera) h Developmental physiology of embryonic mycetomes. Euscelis plebejus and other spp (Cicadina, Homoptera) SANDOR, S. Dr.med. — Centrul de Embriol. Norm, .^i Patol., Acad. Republ. Social. Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania a Teratological tests in early developmental stages. Gallus domesticus (Aves) h Embryonic pathology. Gallus domesticus (Aves) c Development of embryonic axial organs. Gallus domesticus (Aves) d Time-lapse cinematography of early embryonic development. Gallus domesticus (Aves) SANG, J. H. Ph.D., Prof. — School of Biol. Sci., Univ. of Sussex, Falmer, BRIGHTON, Sussex, England a Analysis of developmental effects of melanotic tumor genes, using germ-free techniques. Drosophila melanogaster (Diptera) h Culture of embryonic cells. Drosophila melanogaster (Diptera) SANN. A. B.Sc. — Dept. of Embryol., Marischal Coll., Univ. of Aberdeen. ABERDEEN AB9 IAS, Scotland, U.K. a Morphological studies of chick embryo fibroblasts, in monolayer culture, affected by the addition of Kirby-prepared rat liver RNA extracts, nucleotides, enzymes etc. Gallus domesticus (Aves), Rattus rattus (Rodentia) h Autoradiographic studies of H^-uridine and H^-RNA incorporation into embryonic fibro- blasts. Gallus domesticus (Aves) SANTAMARIA, P. M.Sc. — Sect. Developm. Genet., Inst, of Genet, and Anthropol.. Velazquez 144, MADRID 6. Spain a Analysis of wing development in scalloping mutants by means of somatic recombination: allele homozygosity at different times of development, and clonal analysis of the mutant wing. Drosophila melanogaster (Diptera) SANT'ANA, Miss Y. X. B.Sc. — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4° andar, C.P. 253, BELO HORIZONTE, M.G., Brazil a Cyto-embryology (DNA and nuclear size in development). Tilapia melanopleura (Teleos- tei) SANTORO D'ANGELO. Mrs. L. Dr. — 1st. di Biol. Gen., Univ. di Roma, Policlinico Umberto I, 00100 ROMA, Italy SASAKI, M. D.Sc. — Anim. Chromosomes Research Unit, Fac. of Sci., Hokkaido Univ., North 10. West 8. SAPPORO, 060 Japan a Chromosome studies in early embryogenesis, with special reference to spontaneous abor- tion, maldevelopment and sex ratio. Homo sapiens (Primates) SASAKI, N. D.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA, 812, Japan a Change of regional effect in primary induction with special reference to molecular struc- ture of inducing agent. Triturus pyrrhogaster (Urodela), Gallus domesticus (Aves) b Transformation of primarily activated ectoderm by RNA. Triturus pyrrhogaster (Ucodelai 152 SATHANANTHAN. A. H. Ph.D. — Dept. of Zool., Univ. of Ceylon, COLOMBO 3. Ceylon a Morphological, cytochemical and ultra-structural aspects of early development from second maturation division (oviposition) to the post-gastrula stage. Arion ater rufus (Pulmonata, Gastropoda) h Cell movements in morphogenesis. Arion atcc rufus (Pulmonata, Gastropoda) SATO. G H. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109, LA JOLLA. Calif. 92037, U.S.A. a Induction and maintenance of differentiated cell functions in vitro SATO, H. D.Sc, Prof. — Dept. of Biol., Univ. of Pennsylvania. 217 Leidy Lab., PHILA- DELPHIA. Pa. 19104, U.S.A. a Thermodynamics of molecular association in the isolated spindle, studied on meiosis-I metaphase in the oocyte (kinetic analysis, birefringence measurements). Pisaster ochraceus (Asteroidea) h Crystallization of the spindle protein in the living mature oocyte. Pectinaria gouldi (Poly- chaeta). Asterias forbesi, Pisaster ochraceus (Asteroidea) SATO, T. D.Sc, D.phil.nat., Prof. (Emcr.) — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan • SAUNDERS, D. S. Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Rd.. EDIN- BURGH 9, Scotland. U.K. SAUNDERS, J W., Jr. Ph.D., Prof. — Dept. of Biol. Sci.. State Univ. of New York at Albany, ALBANY, N.Y. 12203, U.S.A. • a The role of ectoderm in the development of the limbs. Gallus domesticus (Aves) h An analysis of the factors affecting tract-specificity in embryonic feather areas. Gallus domesticus (Aves) c Ectoderm-mesoderm interactions in formation of the limbs. Gallus domesticus (Aves) d Cellular deaths in morphogenesis. Gallus domesticus (Aves), Campanulacia flexuosa (Coelenferata) SAUSSEY, M. Dr.es Sci. — Biol, et Ecol., Univ. de Caen, 14 CAEN, France a Regeneration, sexuality and diapause. Allolobophora icterica, A. spp. (Oligochaeta) SAUZIN, Miss M. J. — Lab. de Biol. Anim., Univ. de Paris, Fac. des Sci d'Orsay, 91 ORSAY, France a Etude ultrastructurale du blasteme de regeneration: la differenciation des neoblastes. (Pla- nariidae, Turbellaria) SAWADA, N. D.Sc, Prof. — Biol. Inst., Ehime Univ., Bunkyo-cho, MATSUYAMA, 790, Japan a Ultrastructural changes in oogenesis. (Echiuroidea; Sipunculoidea; Lamellibranchia) h Structural changes of cortical layers in marine eggs. (Echiuroidea; Polychaeta; Lamelli- branchia) SAWAI, T. B.A. — Embryol. Sect., Biol. Dept., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158), Japan a Studies of cleavage. Triturus pyrrhogaster (Urodela) SAWIN, P. B. ScD. — The Jackson Lab.. BAR HARBOR, Me. 04609, U.S.A. a Normal and abnormal variations in growth of the skeleton in inbred races and in stocks carrying the dwarf genes Dw, Da and ac Oryctolagus cuniculus (Lagomorpha) SAXeN, L. O. M.D., Phil.lic, Prof. — Lab. of Exper. Embryol., Ill Dept. of Pathol., Univ. of Helsinki. Haartmaninkatu 3, HELSINKI 25, Finland • a Mechanism of primary induction. Triturus spec. (Urodela) (in collaboration with S. I. TOIVONEN, Dept. of Zool.) b Mechanism of kidney tubulogenesis. Mus musculus (Rodentia) (in collaboration with J. J. WARTIOVAARA and others) c Drug-induced teratogenesis in vitro. Mus musculus (Rodentia) (in collaboration with A. LAHTI and I. KAITILA) d Virus-induced abnormalities in embryonic development. Homo sapiens (Primates) (in collaboration with O. J. KOSKIMIES, Dept. of Zool.) SAXOD, R. Lic.es Sci. — Lab. de Zool.. Fac. des Sci. de Grenoble, Cedex 53, 38 GRE- NOBLE, France a Experimental study of the differentiation of the cutaneous sensory corpuscles. Gallus domesticus. Anas boschas (Aves) h Electron microscopical study of histogenesis and cholinesterases of Herbst's and Grandry's cutaneous sensory corpuscles. Anas boschas (Aves) c Effects of X-rays on the innervation of the skin. Gallus domesticus (Aves) SAZHINA, Miss M. V. Cand.biol.sci. — Phenogenet. Lab., Inst, of Gen. Genet., Acad, of Sci. of the U.S.S.R.. Profsojuznay St. 7 (1). MOSCOW B-133. U.S.S.R. a Developmental study of mutational effects of genes wich lead to eye abnormalities. Mus musculus (Rodentia) SCALI, V. Dr.Nat.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta 4. PISA. Italy a Cytology and development. (Cheleutoptera) 153 SCARANO, E. — Lab. Internaz. di Genet, e Biofis., via G. Marconi 10. 80125 NAPOLI, Italy • SCHACyfi, J. P. M.D., Ph.D. — Netherl. Central Inst, for Brain Research, IJdijk 28. AMSTERDAM-O.. Netherlands a Development and maturation of structure and function of the central nervous system. Raftus noTvegicus (Rodentia), Ocyctolagus cuniculus (Lagomocpha), Macaca mulatta (Primates) 1. Electrical patterns - EEG. evoked potentials. 2. Spreading depression and convulsion mechanisms. 3. Effect of X-irradiation and enzyme inhibitors. 4. Structural organization of dendritic patterns. SCHAIBLE. R. H. Ph.D. — Zool. Dept., Indiana Univ.. BLOOMINGTON. Ind. 47401. U.S.A. a Genetic control of differentiation and proliferation of pigment cell populations; embryonic and postnatal stages; tissue transplantation and genetic breeding tests. Poecilia reticulata (Teleostei), Ambystoma mexicanum (Urodela), Gallus gallus (Aves), Mus musculus (Rodentia) SCHARLOO, W. Ph.D.. Prof. — Genet. Inst., Univ. of Utrecht. Opaalweg 20, UTRECHT. Netherlands a Effect of environmental factors and selection on the development of mutant characters. Drosophila melanog aster (Diptera) h Induction of morphological aberrations by antimetabolites. Drosophila melanogasfer (Dip- tera) SCHEEPERS, G. J. B.Sc. — Dept. of Zool.. Univ. of Pretoria, Hillcrest. PRETORIA, S Africa SCHEIB (PFLEGER). Mrs. D. Dr.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S.. 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France — Lab. d'Embryol. exper. du Coll. de France, 11 Place M. Berthelot, PARIS Ve, France • a Etude comparative sur I'apparition et la localisation des steroides deshydrogenases chez I'embryon (histoenzymologie). Effet de substances inhibitrices. Gallus domesticus, Cotuf nix japonica (Aves) h Etude de I'ultrastructure de la lignee interstitielle dans les gonades de I'embryon. (Aves) SCHERRER, K. — Inst. Suisse de Rech. Exper. sur le Cancer, 21 rue Bugnon. LAUSANNE, Switzerland • SCHIEBLER, T. H. Dr.med., Prof. — Anat. Inst, der Univ.. Koellikerstr. 6, 87 WORZ- BURG, W.Germany a Experimental investigation of the kidney using actinomycin D in order to study the formation of enzymes during development. Rattus norvegicus (Rodentia) h Chemo-differentiation of the optic system by enzyme-histochemical and experimental methods. Rattus norvegicus (Rodentia) c Chemo-differentiation of the thalamus by enzyme-histochemical methods (histochemical and functional development of various thalamic nuclei). Rattus norvegicus (Rodentia) SCHILT, J. Lic.es Sc. — Lab. de Zool., Fac. des Sci. de Nancy, 30 rue Ste Catherine, 54 NANCY, France a Teratologie: origine, evolution et transmission des lesions, excroissances et duplications. Dugesia tigrina (Turbellaria) (en collaboration avec F. STEPHAN) b Roles respectifs du systeme nerveux et des territoires dans la regeneration. Dugesia lugubris (Turbellaria) SCHIMKE, R. T. M.D., Prof. — Dept. of Pharmacol.. School of Med., Stanford Univ., STANFORD, Calif. 94305. U.S.A. a Hormonal regulation of oviduct development and specific cell function. Gallus domesticus (Aves) h Hormonal regulation of ovalbumin synthesis and ovalbumin messenger RNA content of oviduct tubular gland cells. Gallus domesticus (Aves) SCHLESINGER, A. B. Ph.D., Prof. — Dept. of Biol, Creighton Univ., 2410 California St., OMAHA, Neb. 68131, U.S.A. a Phase cinematographic time-lapse recording of morphogenetic movements of marginal tissue. Gallus spec. (Aves) b Cytoplasmic nucleic acids involved in growth control of marginal tissue. Gallus spec. (Aves) SCHLOOT, W. Dr.rer.nat. — Inst, fiir Humangenet. der Univ., Martinistr. 52. 2 HAM- BURG 20. W.Germany (no embryological work in progress) SCHLUTER, G. Dr.med. — Anat. Inst, der Univ.. Abt. fiir Neuroanat.. Nussallee 10. 53 BONN. W.Germany a Embryology of the brain. Mus musculus (Rodentia) h Teratogenesis in the nervous system. Mus musculus (Rodentia) SCHMATOLLA, E. M.D. — Dept. of Biol.. Grad. School of Arts and Sci., New York Univ., Washington Square. NEW YORK, N.Y. 10003, U.SA. 154 a Development of the eye, optic nerve, and optic tectum in reciprocal transplants of eye rudiments between embryos of varieties with and without eyes. Astyanax mexicanus (syn. Anoptichthyes jordani) (Teleostei) SCHMEKEL, Miss M. L. Dr.phil. — Arbeitsgr. Biochem. Embryol.. Max-Planck-Inst. fur Zellbiol, Abt. Bauer, Melanchthonstr. 36, D 7400 TUBINGEN, W.Germany a Fine structure of embryo. Paracenfrotus lividus, Psammechinus miliaris (Echinoidea) SCHMERLING. J. G. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26. MOSCOW B-133. U.S.S.R. a Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during maturation. (Acipenseridae, Chondrostei; Amphibia) (in collaboration with Mrs. T. A. DETTLAFF) b Cytoplasmic DNA of oocytes and somatic cells SCHMIALEK. P. Dr.med.. Dipl.Chem. — Inst, fiir Physiol. Chemie, Freie Univ. Berlin. Arnimallee 22, 1 BERLIN 33, W.Germany a Hormonal effects in metamorphosis. (Insecta) h Nucleo-cytoplasmic interrelations in somatic cells. SCHMID, V. S. Dipl.Phil.II. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16. 8006 ZURICH. Switzerland a Differentiation potentialities of cells. (Scyphozoa) SCHMID, W. Dr. — Anat. Inst, der Univ.. Gloriastr. 19, 8006 ZURICH, Switzerland SCHMIDT, A. J. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W.Polk St.. CHICAGO. 111. 60612, U.S.A. a The hormonal influences on regenerating systems. Triturus viridescens (Urodela) b The chemistry of regenerating systems. Triturus viridescens (Urodela) c The fine structure of cells and tissues of regenerating systems. Triturus viridescens (Uro- dela) d The histo- and cytochemistry or repairing cutaneous wounds. Mus musculus (Rodentia) SCHMIDT. G. A. Dr.biol.sci.. Prof. — Inst, of Evolut. Morphol. and Ecol. of Anim.. Acad. of Sci. of the U.S.S.R., Lenin Ave. 33, MOSCOW V-71, U.S.S.R. SCHMIDT. G. H. Dr.rer.nat. — Inst, fiir Angew. Zool., Univ. Wiirzburg, Rontgenring 10. 87 WURZBURG. W.Germany a Postembryonic development of holometabolic forms. Esp. Formica polyctena (Hymen- optera) SCHNEIDER. H. M.D. — Inst. Natl, de la Sante et de la Rech. Med.. Unite de Physiol. placentaire. Hop. Saint-Antoine, 184, rue du Faubourg Saint-Antoine, PARIS 12e. France a Perfusion of the placenta; double-perfusion technique; passage of vital dyes. Homo (Primates) SCHNEIDERMAN. H. A. Ph.D. — Dept. of Organismic Biol., School of Biol. Scis., Univ. of California. IRVINE. Calif. 92664. U.S.A. • SCHNETTER, W. Dr.rer.nat. — Zool. Inst, der Univ., Physiol. Lehrstuhl. Berlinerstr. 15, 6900 HEIDELBERG. W.Germany a Early embryology. Leptinotarsa decemlineafa (Coleoptera) h Morphogenetic function of egg components; transplantation of nuclei and ooplasm. Lep- tinotarsa decemlineata (Coleoptera) c Synthesis of RNA and protein during early embryogenesis. (Insecta) SCHOELLER (RACCAUD). Mrs. J. Dr.es Sci. — Lab. de Physiol, des Insectes. Fac. des Sci.. 7 quai St. Bernard, PARIS 5e, France • a Analyse experimentale de la cephalogenese larvaire et imaginale. Calliphora spec. (Dip- tera) SCHOLL, G. Dr.rer.nat. — I. Zool. Inst., Naturw. Fak., Friedrich- Alexander Univ., Uni- versitatsstr. 19, 852 ERLANGEN, W.Germany a Development of the head and prothorax. Carausius morosus (Phasmidoptera) h Development. Limulus polyphemus (Xiphosura) SCHOONEVELD, H. M.Sc. — Lab. of Entomol., Agric. Univ., Binnenhaven 7. P.O.B. 62, WAGENINGEN. Netherlands SCHOONHOVEN, L. M. Dr. — Lab. of Entomol.. Agric. Univ.. Binnenhaven 7, P.O.B. 62, WAGENINGEN, Netherlands SCHOTTfi, O. E. Ph.D., Prof. (Emer.) — Dept. of Biol., Amherst Coll.. AMHERST, Mass. 01002. U.S.A. • a Regression effect in tadpole limb regeneration (stages 4 to 12) following exposure to ionizing radiation. Rana pipiens. R. clamitans, R. catesbeiana (Anura) h Control of regression effects in larval limb regeneration after irradiation of blastemata of varying age (5-20 days). Triturus (Notophthalmus) spec, Salamandra maculosa (Urodela) c Influence of ionizing radiation upon morphogenesis in regeneration and in ontogenesis. Salamandra maculosa, Siredon mexicanum, Triturus spec. (Urodela), Rana pipiens, R. catesbeiana (Anura) SCHOWING, J. Dr.es Sci.. Prof. — Inst, de Zool. et d'Anat. Comparee. Univ. de Fribourg, 1700 FRIBOURG. Switzeriand a Recherches des inducteurs cephaliques; leur action sur la morphogenese du crane. Callus gallus (Aves) 155 b Etude experimentale de la cydopie, consequences sur le developpement cranien. Gallus gallus (Aves) SCHRAMM, B. Dr.en Med.. Prof. — Lab. d'Histol.-EmbryoI. B, Fac. de Med.. 45 rue des Sts.Peres, PARIS Vie, France a Placenta et annexes foetales. Homo sapiens (Primates) b Malformations. Homo sapiens (Primates) SCHREIBER, B. Prof. — 1st. di Zool., Univ. di Parma, Via Universita 12, 43100 PARMA, Italy • a Experimental morphology of bone induction and inhibitory action of thalidomide, (in col- laboration with Miss L. RINALDI) SCHREIBER. G. Ph.D.. Prof. — Dept. de Biol. Geral. Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4°andar, C.P. 253. BELO HORIZONTE. M.G.. Brazil a Relations between DNA and nuclear size (non-histonic proteins) among specialized tissues of adult, embryonic tissues, and germinal line. Biomphalaria (= Australorbis ) glabrata (Pulmonata, Gastropoda), Aplysia brasiliana. Bulla striata (Ophisthobranchia, Gastropoda) h Study of nuclear size and DNA content (cytophotometry) of different organs in embryo and larva. Ascidia nigra (Ascidiae) c Study of the DNA synthesis of endometrium, myometrium and placenta (autoradiography and cytophotometry). Mus musculus (Rodentia) SCHROEDER, P. C. Ph.D. — Dept. of Zool., V/ashington State Univ., PULLMAN. Wash. 99163. U.S.A. a Oogenesis and its hormonal control: 1. in vitro study of possible material transfer from coelomocytes to coelomic oocytes. 2. studies of nucleolus formation in eleocytes and autoradiography of uridine metabolism. 3. possible hormonal control of fertilizin synthesis during oogenesis. Nereis grubei (Polychaeta) SCHRYVER, H. F. Ph.D., D.V.M., Prof. — Dept. of Large Anim. Med., New York State Vet. Coll., Cornell Univ., ITHACA. N.Y. 14850. U.S.A. a Morphologic and biochemical aspects of skeletal development of the early embryo in organ culture. (Mammalia) b Studies on chondrocyte hypertrophy including influences on hypertrophy and fate of hypertrophic cells. (Mammalia) c Calcium metabolism in development. (Mammalia) SCHUETZ, A. W. Ph.D. — Div. of Popul. Dynamics. School of Hyg. and Publ. Health, Johns Hopkins Univ., 615 N. Wolfe St.. BALTIMORE. Md. 21205, U.S.A. a Control and secretion of gonadotrophic hormones. (Mammalia) b Gonadal steroidogenesis. (Amphibia; Mammalia) c Testis differentiation and spermatogenesis. (Mammalia) d Oocyte maturation. ( Asteroidea; Amphibia; Mammalia) SCHULMAN. H. M. Ph.D. — Dept. of Biol.. Univ. of California. San Diego. P.O. Box 109. LA JOLLA. Calif. 92037. U.S.A. a Development of erythroid tissues. SCHULTZ. Miss I. Dipl.biol. — Inst, fiir Zellphysiol.. Deutsche Akad. der Wissensch. zu Berlin. Lindenberger Weg 70. 1115 BERLIN-Buch. East.Germany SCHULTZ. R. L. Ph.D.. Prof. — Dept. of Anat., Univ. of Colorado Med. School. 4200 E. 9th Ave.. DENVER. Colo. 80220. U.S.A. SCHUMACHER. G. H. Dr.med.. Dr.med.dent., Prof. — Anat. Inst, der Univ., Gertruden- str. 9, 25 ROSTOCK 1, East.Germany a Allometrische Organuntersuchungen und Osteogenese. Mesocricetus auratus (Rodentia) h Craniogenese und Osteogenese. Larus ridibundus, Gallus domesticus (Aves) c Experimentelle Untersuchungen zur Frage von Organ- und Schadelveranderungen auf Grund statischer Veranderungen in der Postnatalperiode (Amputation der Vorderextre- mitaten). Rattus norvegicus (Rodentia) SCHUNZEL. G. Dr.rer.nat. — Biol. Inst.. Med. Akad., Erich-Weinertstr. 3. 3014 MAG- DEBURG. East.Germany SCHWAIER. Miss A. Dr. — Stadt. Museum fur Naturk., Gerberau 32, 78 FREIBURG i.Br.. W.Germany SCHWANDER. J. — Lab. de Physiol. Gener.. Fac. des Sci., 15 Place Carnot, 54 NANCY, France (no embryological work in progress) SCHWARTZ, R. J. B.S. — Dept. of Biol.. Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med.. Univ. of Pennsylvania. PHILADELPHIA, Pa. 19104. U.S.A. a Embryonic development of neural retinal tissue in relation to protein products and nucleic acid synthesis. Gallus domesticus (Aves) SCHWARTZ, V. Dr.rer.nat.. Prof. — Zool. Inst, der Univ.. Holderlinstr. 12, 74 TUBIN- GEN. W.Germany SCHWEIGER. H. G. Dr.med. — Max-Planck. Inst, fur Zellbiol.. Anton-Dohrn-Weg, Post- fach 1009 D 294 WILHELMSHAVEN. W.Germany a Biochemical aspects of nucleo-cytoplasmic interrelationships, (unicellular Algae) b Autonomy of chloroplasts. (Algae) 156 c RNA-synthesis in anucleate cells. (Algae) d Cooperation between different subcellular components in morphogenesis. (Algae) SCHWEISTHAL, M. R. Ph.D.. Prof. — Dcpt. of Oral Biol., School of Dent., Univ. of Kentucky. LEXINGTON, Ky. 40506, U.S.A. SCOTHORNE, R. J. M.D., Prof. — Dept. of Anat., Med. School, The Univ., NEW- CASTLE upon Tyne 1. England SCOTT, T. K. Ph.D., Prof. — Dept. of Botany, Univ. of North Carolina, CHAPEL HILL, N.C. 275H, U.S.A. a Auxin movement; the relation between transport and growth in seedlings as influenced by age and light. Pisiim sativum (Leguminosae), Zea mays (Gramineae) h Apical dominance; characterization of the hormonal control exhibited by shoot apices in lateral bud suppression. Pisum sativum (Leguminosae), Coleus blumei (Labiatae) SCRIBA, M. E. L. Ph.D. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn, W.Germany a Developmental abnormalities caused by lethal factors. Drosophila melanogaster (Diptera) SEAGO, J. L. Ph.D. — Dept. of Biol., State Univ. Coll., OSWEGO, N.Y. 13126, U.S.A. a (Irowth phenomena of the germinating .seedling. Ipontocn purpurea (Convolvulacea) h The initiation and establishment of the vascular connection between main and lateral roots. Ipomoea purpurea (Convolvulaceae) c Developmental changes in the apical meristem. Ipomoea purpurea (Convolvulaceae) SEALE, R. U. Ph.D. — Dept. of Anat., Univ. of Colorado Med. School, 4200 E. 9th Ave., DENVER, Colo. 80220, U.S.A. SEARLS, R L. Ph.D., Prof. — Dept. of Biol., Temple Univ., Broad and Berks St.. PHILADELPHIA, Pa. 19122, U.S.A. a Ectoderm-mesoderm interaction in limb development. Gallus domesticus (Aves) b Metabolic changes in development. Gallus domesticus (Aves) c Biochemistry of development. Gallus domesticus (Aves) SEDLACEK, J. M.D., Ph.D. — Lab. of Embryophysiol., Inst, of Physiol., Fac. of Gen. Med., Charles Univ., Albertov 5, PRAGUE 2, Czechoslovakia a Development of spontaneous and evoked phasic activity of CNS in prenatal period. (Aves; Mammalia) b Development of low and high frequency impedance in fetal brain tissue. (Aves; Mammalia) c Development of steady and membrane potential in fetal brain. (Aves; Mammalia) d Development of extracellular environment of fetal brain (physical and chemical). (Aves; Mammalia) e Development of membrane ATP-ase system in fetal brain tissue. (Aves) SEDRA, S. N. Ph.D., Prof. — Dept. of Zool., Fac. of Sci., Alexandria Univ., Moharram Bey, ALEXANDRIA, Egypt, U.A.R. • a Behaviour of egg laying. Rana fusca. Bufo regularis (Anura) h The chronological order of ossification. Bufo regularis (Anura) c The development of the urogenital system. Bufo regularis (Anura) (in collaboration with M. I. MICHAEL and S. H. KHALIL) SEECOF, R. L. Ph.D. — Dept. of Biol., City of Hope Med. Center, 1500 E. Duarte Rd., DUARTE, Calif. 91010, U.S.A. a In vitro differentiation of embryonic cells; which embryonic stages give cells com- petent to do this?; identity of differentiating cells. Drosophila melanogaster (Diptera) gEFTALlOGLU, Miss A. — Inst, of Histol. and Embryol., Med. Fac, Hacettepe Sci. Center, ANKARA, Turkey a Development and differentiation of mast cells after stimulation with 48/80 (histology and histochemistry). Rattus norvegicus (Rodentia) b Ultrastructural development and differentiation of mast cells. Rattus norvegicus (Rodentia) SEGAL, E. Ph.D., Prof. — San Fernando Valley State Coll., 18111 Nordhoff St., NORTH- RIDGE, Cahf. 91326, U.S.A. SEGAL, S. J. Ph.D. — Biomed. Div., The Population Council, Rockefeller Univ., NEW YORK, N.Y. 10021. U.S.A. • d Immunologic analysis of pituitary gonadotrophin function: development and species specif- icity. (Vertebrata) h Mechanism of hormone action. (Vertebrata) c Action of blastotoxic chemical agents. (Vertebrata) d Oogenesis in the constant-estrus female. Rattus norvegicus (Rodentia) e Studies on RNA in implantation. Rattus norvegicus (Rodentia), (Primates) SEHNAL, F. C.Sc. — Dept. of Physiol., Inst, of Entomol., Czechoslov. Acad, of Sci.. Na Folimance 5, PRAHA 2, Czechoslovakia SEICHERT, V. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, PRAHA 2, Czechoslovakia a Experimental analysis of limb formation. Gallus domesticus (Aves) SEIDEL, F. Dr.phil., Prof. (Emer.) — Zool. Inst, der Univ., Ketzerbach 63, 355 MAR- BURG/Lahn, W.Germany • SEIGER, M. B. Ph.D., Prof. — Dept. of Biol., Div. of Sci. and Engin., Wright State Univ.. Col. Glenn Highway, DAYTON, Ohio 45431. U.S.A. 157 a Use of immunogenetic techniques to study wing development. Drosophila melanogastet (Dipteca) SEITZ. K.-A. Dr.rer.nat. — Zool. Inst, der Univ., Ketzerbach 63, 355 MARBURG/Lahn. W.Germany a Oogenesis. Cupiennius salei (Ctenidae, Araneida) SEKERIS, C. E. Ph.D. — Physiol.-Chem. Inst., Philipps-Univ., 355 MARBURG/Lahnberge, W.Germany a Protein and RNA synthesis during metamorphosis; correlation with hormonal (ecdysone) secretion. Calliphora erythrocephala (Diptera) b Mode of action of juvenile hormone. Periplaneta americana (Dictyoptera). Calliphora erythrocephala (Diptera) SEKIGUCHI, K. Ph.D. — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ., Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan a Transplantation experiments with the egg. Tachypleus fridentatus (Xiphosura. Arachnida) SELLER, Miss M. J. Ph.D. — Paediat. Research Unit. Guy's Hosp. Med. School, LON- DON S.E.I, England a Haematology of congenital anaemia in the W-series mutants. Mas musculus (Rodentia) b Experimental teratology. (Mammalia) c Experimental production of chimaeras by 1. fusing eggs, 2. transplantation of tissue. Mus musculus (Rodentia) d Chromosomes of trophoblast cells. Mus musculus (Rodentia) SELMAN, G. G. Ph.D. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH EH9 3JN, Scotland, U.K. • a Ultrastructural and experimental study of cleavage. Triturus alpestris (Urodela), Xenopus laevis (Anura) (in collaboration with Miss M. M. PERRY) SEMBRAT, K. Ph.D., D.Sc. Prof. — Zaklad Zool. Ogolnej, Inst, of Zool., Univ. of Wrocfaw, ul. Sienkiewicza 21, WROC2,AW, Poland • a Cytological and cytochemical studies in embryological development. Emblefonia pallida (= Eubcanchus pallidus) (Opisthobranchia, Gastropoda) SENGEL, Ph. Dr.es Sci., Prof. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38-GRENOBLE, France • a Skin and feather development; production of supernumerary pterylae; mechanisms of feather pattern development. Gallus domesticus (Aves) b Ultrastructural study on the development of the skin. Pleurodeles waltlii (Urodela), Gallus domesticus (Aves) SENSENIG, E. C. Ph.D., Prof. — Dept. of Anat., Univ. of Alabama Med. Center, 1919 Seventh Ave. South, BIRMINGHAM, Ala. 35233, U.S.A. • SENTEIN, P. Dr.en Med., Dr.es Sc, Prof. — Lab. d'Histol., Fac. de Med., Univ. de Mont- pellier, 34 MONTPELLIER, France a Association of antimitotic substances acting upon the cleaving egg (radiomimetic, anti- chromosome and depolarizing substances). Triturus helveticus, Pleurodeles waltlii (Urodela) b Action of carboxylic acids on cleavage and on cell division in larval epithelium. Triturus helveticus, Pleurodeles waltlii (Urodela) c Electron microscopy of cleaving egg. Triturus helveticus, Pleurodeles waltlii (Urodela) SERMAN. D. M.Sc. — Inst, of Biol., Univ. of Zagreb, Salata, ZAGREB, Yugoslavia a Analysis of soluble proteins in organogenesis. Rattus norvegicus (Rodentia) (in collab- oration with N. SKREB) SERRI, F. M.D., Prof. — Dept. of Dermatol., School of Med.. Univ. of Pavia, Policlinico S. Matteo, 27100 PAVIA, Italy a Morphology and physiology of fetal skin. Homo sapiens (Primates) b Microbiochemistry and histochemistry of carbohydrate and intermediate metabolism en- zymes in fetal skin, especially developmental changes of enzyme activities. Homo sapiens (Primates) SETO, F. Ph.D — Dept. of Zool., Univ of Oklahoma, 730 South Oval. Room 222, NORMAN, Okla. 73069, U.S.A. a The ontogenetic appearance and maturation of the primary homograft rejecting and primary humoral antibody producing potential in embryos and growing juveniles. Gallus domesticus (Aves) SETOGUTI. T. Dr.Med.. Prof. — First Dept. of Anat., Gifu Univ. School of Med., Tsu- kasa-machi, GIFU, Japan a Electron microscopic study of mast cell development. Triturus pyrrhogaster (Urodela) SEVCENKO, Mrs. G. MUDr. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, Czechoslovakia a Development of taste buds (electron microscopic and cytochemical studies). Homo sapiens (Primates) SHAAYA. E. Ph.D. — Physiol.-Chem. Inst., Philipps-Univ., 355 MARBURG/Lahnberge, W.Germany a Control of nucleic acids and protein synthesis by ecdysone and juvenile hormone during postembryonic development. Periplaneta americana (Dictyoptera), Calliphora erythro- cephala (Diptera) 158 b The role of juvenile hormone in the synthesis of protocatechuic acid glucoside in the accessory sex glands. Periplaneta americana (Dictyopteca) ^ , o SHLAH, R. V. Ph.D. — Dept. of Zool., Fac. of Sci., M.S. Univ. of Baroda, BARODA-2, India a Tail regeneration in embryos and adults. Gekko spec, Mabuya spec. (LacertiltaJ SHANKLIN, D. R. Prof. — Dept. of Biol., Div. of Biol. Sci., Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Pathology and pathogenesis of developmental systems SHAPPIRIO, D. G. Ph.D., Prof. — Dept. of Zool., Univ. of Michigan, ANN ARBOR, Mich. 48104, U.S.A. a Developmental physiology and biochemistry, especially growth and metamorphosis, (oatur- niidae, etc., Lepidoptera; Zhiconomidae. etc., Diptera) SHAVER, Miss E. L. Ph.D. — Dept. Anat., Univ. Western Ontario, LONDON, Ont., Canada a Cytogenetics of blastocysts under various experimental conditions especially aging ova, effect of drugs on pre-implantation stages. Oryctolagus cuniculus (Lagomorpha) SHAVER J R. Ph.D. Prof. — Zool. Dept., Biol. Res. Center, Michigan State Univ., EAST LANSING, Mich. 48823, U.S.A. • a Investigations of specificity of jelly-coat in fertilization (immunology, biochemistry). Rana damitans. R. pipiens (Anura) b Egg transfer studies between species and genera. Rana spec, Bufo spec. (Anura) c Fluorescence microscopy and histochemistry of ovi ducal secre'jions. (Raniidae, Anura) d Studies on cleavage-block produced by antibodies. Rana spec. (Anura) e Effects of tissue-specific antibodies on embryonic differentiation. (Anura) SHEA, S. M. M.D. — Dept. of Pathol., Harvard Med. School, 25 Shattuck St., BOSTON, Mass. 02115, U.S.A. SHEN, S. C. Ph.D. — Dept. of Anat., Columbia Univ., 630 W. 168th St., NEW YORK, N.Y. 10032, U.S.A. • SHEPARD T H. M.D., Prof. — Central Lab. for Human Embryol., Dept. of Pediat., School of Med., Univ. of Washington, SEATTLE, Wash. 98105, U.S.A. a Development and function of fetal thyroid (autoradiography, organ culture). Homo sapiens (Primates) b Effect of rubella virus on the fetus. Homo sapiens (Primates) c Effect of galactoflavin on the fetus. Rattus spec. (Rodentia) d Histology and biochemistry of achondroplasia (ac/ac strain; organ culture, radio-isotopes) Oryctolagus cuniculus (Lagomorpha). Homo sapiens (Primates) e Effects of teratogens on embryos in vitro. Rattus norvegicus (Rodentia) (in col- laboration with T. TANIMURA) SHERBET G. V. Ph.D. — Chester Beatty Research Inst., Inst, of Cane Research, Royal Cane Hosp., Fulham Rd., LONDON S.W.3, England a Morphogenetic effects of follicle-stimulating hormone. Callus domesticus (Aves) (in col- laboration with Miss M. S. LAKSHMI) b Behaviour of neoplastic cells transplanted into embryos. Callus domesticus (Aves) (in collaboration with Miss M. S. LAKSHMI) SHERIDAN, J. D. D.Phil. — Dept. of Zool., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. a Determination of the permeability properties of low-resistance junctions between reag- gregating embryonic cells, using electrophysiological methods, current passing and intra- cellular dye injection. Xenopus laevis and others (Amphibia) SHIELD, J. W. Ph.D. — Zool. Dept., Univ. of W.Austraha, NEDLANDS, W.Australia 6OO9', Australia a Development of homeostatic mechanisms in respiration, anoxia tolerance, respiratory control in neonatal animals ("pouch fetuses"). Dasyurus geoffroyi, Setonix brachyurus (Marsupi- alia) b Development of metabolism, especially energy metabolism in neonatal and juvenile animals. Dasyurus geoffroyi, Setonix brachyurus (Marsupialia) c Development of homeothermy. Dasyurus geoflroyi. Setonix brachyurus (Marsupialia) SHIN-IKE, T. D.Sc, Prof. — Biol. Lab., Osaka Dental Coll., Saka, HIRAKATA, Osaka Pref., Japan SHIOMI, T. Dr., Prof. — Dept. of Genet., School of Med., Nagasaki Univ., 12-4, Saka- moto-machi, NAGASAKI, Japan a Radiation genetics (embryo, germ cells). Drosophila melanogaster (Diptera) SHIRAI, H. B.Sc. — Lab. of Physiol., Ocean Research Inst., Univ. of Tokyo, Minamidai 1-15, Nakano-ku, TOKYO, (164) Japan a Mechanism of spawning. Asterias amurensis, Asterina pectinifera (Asteroidea) b Electron microscopic study on spawning and oocyte maturation. (Asteroidea) SHOGER, R. L. Ph.D., Prof. — Dept. of Biol., Carleton Coll., NORTHFIELD, Minn. SHOSTAK, S. ' Ph.D. — Dept. of Biol., Univ. of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. 159 a The mechanism and control of cell movement during homeostasis and budding; role of collagen-like protein in the mesoglea. Hydra viridis, H. oligactis, H. pseudoligactis, H. pirardi, H. [usca (Hydrozoa) SHUKUYA, R. M.D., Prof. — Dept. of Biochem., Nippon Med. School. 1-1-5, Sendagi. Bunkyo-ku, TOKYO, Japan a Genetic control of hemoglobin switch during metamorphosis. Rana catesbeiana (Anura) (in collaboration with A. KAJITA and K. HAMADA) b Change of isozyme patterns during metamorphosis. Rana catesbeiana (Anura) (in col- laboration with A. KAJITA) c Control of enzyme formation and activity in liver during development. Rana catesbeiana (Anura) SHULOV, A. D.Sc, Prof. — Dept. of Entomol. and Venomous Anim., The Hebrew Univ., JERUSALEM, Israel SHUPE, J. L. D.V.M., Prof. — Vet. Sci. Dept., Utah State Univ., LOGAN, Utah 84321, U,S.A. a Congenital malformations, especially musculo-skeletal and cleft palate. Bos taurus, Ovis aries (Artiodactyla) b Congenital anterior polar cataracts, cleft lip and cleft palate. Canis familiaris (Carnivora) c Congenital multiple exostosis (hereditary osteochondromatosis). Equus caballus (Peris- sodactyla) SHUTE, C. C. D. M.D. — Anat. School, Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3DY, England a Segmentation of vertebrae; development of arcualia and centra. (Vertebrata) SICHEL. G. M.D.. Prof. — 1st. di Zool.. Univ. di Catania, Via Androne 81, 95124 CATANIA, Italy a Regeneration (origin of blastema cells). (Sabellimorpha, Nereidae, Polychaeta) SIDKY, Y. A. Ph.D. — Dept. of Zool, Fac. of Sci., Univ. of Alberta, EDMONTON, Alta., Canada a Comparison between the development of the immune reaction of adult hibernating animals and newborns. Citellus tridecimlineatus (Rodentia) h The possible inductive role of the thymus in immune reaction development. Citellus tri- decimlineatus (Rodentia) SIDOROVA, Mrs. V. F. Dr.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. SIGNORET, J. Dr.es Sci., Prof. — Biol, et Ecol., Univ. de Caen, 14 CAEN, France • a Study of nuclear differentiation and specific activities by means of nuclear transplantation. Ambystoma mexicanum (Urodela) h Study of chromosome changes during cellular differentiation. Ambystoma mexicanum (Urodela) SIGOT. M. Dr.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49 bis Av. de la Belle Gabrielle, 94 NOGENT-sur-MARNE, France — Lab. d'Embryol. Exper. du Coll. de France, 11 Place M. Berthelot, PARIS Ve, France a Morphogenese du tube digestif en culture in vitro. Callus spec. (Aves) SIGOT (LUIZARD), Mrs. M. F. Lic.es Sci. — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S.. 49bis Av. de la Belle Gabrielle. 94 NOGENT-sur-MARNE, France — Lab. d'Embryol. Exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France a Culture de tissus cancereux sur des organes embryonnaires de poulet explantes in vitro. Mus musculus, Rattus norvegicus. Homo sapiens (Mammalia) SILfiN. L. K. P. Fil.Dr., Prof. — Zool. Inst., Univ. of Stockholm, 70A Radmansgatan, Box 6801, S-113 86 STOCKHOLM, Sweden a Embryology. (Bryozoa) SILVA MURTA, Mrs. I. M. da B.Sc. — Dept. de Biol. Geral, Inst, de Cienc. Biol, da U.F.M.G., Rua Carangola 288 - 4°andar, C.P. 253, BELO HORIZONTE, M.G., Brazil a Embryology of nephridia. Peripatus acacioi (Onychophora) SIMKISS, K. Ph.D., Prof. — Dept. of Zool., Queen Mary Coll., LONDON E.l, England a Respiratory acidosis in embryos SIMON, M. I. Ph.D. — Dept. of Biol., Univ. of California, San Diego. P.O. Box 109, LA JOLLA. Calif. 92037, U.S.A. a Mechanism of molecular assembly in development of subcellular organelles SIMONS, J. A. Ph.D. — Dept. of Biol.. Coll. of William and Mary, WILLIAMSBURG, Va. 23185, U.S.A. a Induction of d-aminolevulinate synthetase and the regulation of heme biosynthesis during development. Callus domesticus (Aves) SIMPSON, S. B. Ph.D. — Dept. of Anat., Developm. Biol. Center, Case Western Reserve Univ., 2109 Adelbert Rd., CLEVELAND, Ohio 44106, U.S.A. a Tail regeneration. Triturus vihdescens (Urodela), Anolis carolinensis (Lacertilia) h Spinal cord regeneration. Anolis carolinensis (Lacertilia) c In vitro differentiation of promuscle cells from tail regenerate. Anolis carolinensis (Lacertilia) 160 SIMS. R. T. M.A.. M.B. — Anat. School, Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3DY, England a Biophysical investigations of factors affecting cellular differentiation in epidermis and hair follicles. (Mammalia) SINCLAIR. J. G. Ph.D., Prof. (Emer.) — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, Tex. 77550, U.S.A. a Development of vertebral vascular pattern in embryos. Stenella coeruleoalbus (Cetacea) h Development of the pituitary gland and ear of embryos. Stenella coeruleoalbus (Cetacea) SINGER, M. Ph.D., Prof. — Dept. of Anat., Developm. Biol. Center, School of Med., Case Western Reserve Univ., 2109 Adelbert Rd., CLEVELAND. Ohio 44106, U.S.A. • a Regeneration. (Amphibia) SINGER, R. D.Sc, Prof. — Dept. of Anat., Div. of Biol. Sci., Univ.. of Chicago, 1025 East 57th St., CHICAGO, 111. 60637, U.S.A. a General embryology. Homo sapiens (Primates) b General embryology. Hystrix africaeaustralis (Rodentia) SINGH, I. Ph.D., Prof. — Dept. of Anat., Med. Coll., ROHTAK, India a Mitotic rate in argyrophile and argentaffin cells of the embryonic gastrointestinal tract. Homo sapiens (Primates) h Distribution of Paneth cells in the fetal gastrointestinal tract. Homo sapiens (Primates) SINGH-ROY, K. K. Dr.phil. — Cell Research Unit., Dept. of Zool., Univ. of Calcutta, 35 Ballygunje Circular Rd., CALCUTTA- 19, India SINGH, R. P. Ph.D. — Dept. of Anat., Univ. of Western Ontario, LONDON, Ont., Canada a Developmental pathology and teratogenesis. Homo sapiens (Primates) h Histochemical studies of gonadal development. Homo sapiens (Primates) SINHA, A. K. Ph.D. — Dept. of Zool.. Presidency Coll., CALCUTTA-12. W.Bengal, India SIRAKAMI, K. I. D.Sc, Prof. — Dept. of Biol., Yamanashi Univ., K6FU, Japan • a Movement of isolated embryonic cells, studied by microcinematography. (Echinodermata; Pisces; Amphibia) h Cytokinesis of cleavage, studied by time-lapse microcinematography. (Echinodermata; Pisces; Amphibia) SIRLIN. J. L. Dr.nat.sci., Prof. — Dept. of Anat., Med. Coll., Cornell Univ., 1300 York Ave., NEW YORK, N.Y. 10021, U.S.A. ® SISCA, R. D.D.S., Ph.D. — Dept. of Histol. and Embryol., Coll. of Dental Surg., Univ. of Maryland, Lombard and Green St., BALTIMORE, Md. 21201, U.S.A. SISKEN, J. — Depts. of Microbiol, and Biochem., Med. Center, Univ. of Kentucky, LEXING- TON, Ky. 40506, U.S.A. a Analysis of the physico-chemical properties of DNA in differentiating cells. Triturus viridescens (Urodela), Gallus domesticus (Aves), Mus musculus, Rattus rattus (Rodentia), Homo sapiens (Primates) (in collaboration with S. P. MODAK) SJOLTE BYSKOV, Mrs. A. G. — Finsen Lab., Finsen Inst., 49 Strandboulevard. DK-2100 COPENHAGEN, Denmark a Electrophysiological studies on developing embryos. Xenopus laevis (Anura). Ambystoma SJOSTRAND, F. S. M.D., Ph.D., Prof. — Dept. of Zool., Univ. of California, LOS ANGELES, Calif. 90024, U.S.A. a Descriptive and biochemical molecular morphogenesis b Morphogenesis of retinal receptor cells c Morphogenesis of mitochondria, Golgi apparatus and other cytoplasmic membranes SKALKO R. G. Ph.D., Prof. — Dept. of Anat., Louisiana State Univ., 1542 Tulane Ave., NEW ORLEANS, La. 70112, U.S.A. SKINNER, D. M. Ph.D., Prof. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. a Metabolism of nucleic acids in the molt cycle. Gecarcinus lateralis (Decapoda, Crustacea) b Studies on functions of satelite DNA's and macromolecular metabolism in regenerating tissues. Gecarcinus lateralis (Decapoda. Crustacea) (in collaboration with Miss M. S. KERR and D. E. GRAHAM) SKOBLINA, M. N. — Inst, of Developm. Biol.. Acad, of Sci. of the U.S.S.R.. Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Effect of gonadotropins and changes in the germinal vesicle and in the oocyte cytoplasm during maturation (Acipenseridae, Chondrostei; Amphibia) (in collaboration with Mrs. T. A. DETTLAFF) SKREB. N. M.D., D.Sc, Prof. — Inst, of Biol., Univ. of Zagreb, Salata, ZAGREB, Yugo- slavia * a Investigation of early differentiation; transplantation, in vitro culture, autoradiography. Rattus norvegicus (Rodentia) (in collaboration with Mrs. B. LEVAK (5VAJGER), D. SOLTER and A. SVAJGER) b Analysis of soluble proteins in organogenesis. Rattus norvegicus (Rodentia) (in collab- oration with D. SERMAN) 161 c Investigation on developmental capacities of tissues of the chorioallantoic membrane. Gallus domesticus (Aves) (in collaboration with A. SVAJGER and Mrs. B. LEVAK (SVAJGER)) SLABY. O. D.Sc, Prof. — Inst, of Histol. and Embryol. Charles Univ., Karlovarska 48. PLZEn, Czechoslovakia • SLACK, Mrs. C. B.Sc. — Dept. of Biol, as applied to Med., The Middlesex Hosp. Med. School, LONDON W.l, England a Electron microscopy and histochemistry of ovulation. Mus musculus (Rodentia) mexicanum (Urodela) SLADECEK, F. RNDr., DSc, Prof. — Dept. of Exper. Zool., Charles Univ., Vinicna 7. PRAHA 2, Czechoslovakia • a Transplantation of nuclei in relation to the development of antigenic characteristics. (Amphibia) (in collaboration with A. ROMANOVSKY) b Transplantation of nuclei in relation to nucleic acids. (Amphibia) (in collaboration with J. NEDVIDEK) c Number of cell generations in relation to cell determination. (Amphibia) SLAMA. K. C.Sc. — Dept. of Physiol., Inst, of Entomol., Czechoslov. Acad, of Sci., Na Folimance 5, PRAHA 2, Czechoslovakia SLIJPER, E. J. t Dr., Prof. — Zool. Lab., Univ. of Amsterdam, Plantage Doklaan 44, AMSTERDAM, Netherlands (deceased) SLiPKA, J. Dr.med., Dr.rer.nat., C.Sc. — Inst, of Histol. and Embryol., Fac. of Med., Charles Univ., Karlovarska 48, PLZES, Czechoslovakia a The development and teratology of the branchial region. (Amniota, incl. Homo sapiens) h The early development of the thyroid gland. (Amniota. incl. Homo sapiens) SMART, I. H. M. M.B., Ch.B. — Dept. of Anat., Univ. of Dundee, DUNDEE DDl 4HN, Scotland, U.K. a Histogenesis of nerve cells and neuroglia. Mus musculus (Rodentia) b Studies on the geometry of the egg. Various spp. (Aves) SMIRNOVA, Mrs. I. E. Cand.biol.sci. — Chair of Embryol, Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. SMIT, A. L. D.Sc, Prof. — Dept. of Zool., Univ. Coll., Private Bag 4(X)1, DURBAN, S.Africa a The ontogenesis of the head skeleton and musculature. Dendroaspis angusticeps, D. poly- lepis (Ophidia) SMIT, P. Med.drs. — Div. of Exper. Morphol., Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O., Netherlands a Effect of X-rays on ovarial oogenesis and ovulation. Mus spec. (Rodentia) (in collab- oration with H. A. L. TRAMPUSCH) SMITH, A. E. S. Ph.D. — Dept. of Developm. Biol., Div. of Biol., Calif. Inst, of Technol., PASADENA, Calif. 91109, U.S.A. SMITH, C. W. Ph.D. — Dept. of Bot., Univ. of Hawaii, 2450 Campus Rd., HONOLULU, Hawaii 96822, U.S.A. a Factors controlling the development of propagules. Boussingaultia gracilis (Chenopodia- ceae) b Control of hydration and reactivation of dormant systems. Artemia salina (Anostraca. Crustacae), seeds (Angiospermae) SMITH, J. G. B.S. — Botany Dept., Univ. of Michigan. ANN ARBOR, Mich. 48104, U.S.A. SMITH, K. D. Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE, Md. 21218, U.S.A. a Biochemical studies on gene action during development. Arbacia punctulata (Echinoidea). Ascidia nigra (Tunicata), Mus musculus (Rodentia) SMITH, L. D. Ph.D. — Purdue Univ., LAFAYETTE, Ind. 47907, U.S.A. • SMITH. M. S. R. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 5NH, England a Early embryology with main reference to histochemistry. Mus musculus (Rodentia) SMITHBERG, M. Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. SMITTEN, Mrs. N. A. Cand.biol.sci. — Lab. of Horm. Regulations, Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. SMYTH, J. D. ScD.. Prof. — Dept. of Zool.. School of Gen. Studies, Australian Nat. Univ., P.O. Box 4, CANBERRA, A.C.T. 2600, U.S.A. a In vitro differentiation. Echinococcus granulosus (Cestoda) SOBOTKA, P. M.D.. CSc — Inst, of Pathophysiol., Med. Fac. Charles Univ.. Lidicka 1, PLZEN, Czechoslovakia a Relationships between biochemical and electrophysiological correlates of brain development in ontogenesis. Rattus norvegicus (Rodentia) SOFER, W. H. Ph.D. — Dept. of Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE, Md. 21218, U.S.A. 162 a Changes in alcohol dehydrogenase during development. Drosophila melanogaster (Dipfeca) h Changes in nucleic acids during development. Arbacia punctulata (Echinoidea) ____ SOJKA, N. J. D.V.M. — Vivarium, School of Med., Univ. of Virginia. CHARLOTTES- VILLE, Va. 22903, U.S.A. a Influence of hormonal state of the female on the fertilizing ability of sperm (comparative study). Oryctolagus cuniculus (Lagomorpha), Rattus norvegicus (Rodenfia), Canis familiaris (Carnivora) b Reproductive physiology; characterization of semen, artificial insemination techniques. Felis catus (Carnivora) SOKOLOVA, Mrs. Z. A. Cand.biol.sci. — Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin Hills, MOSCOW V-234, U.S.S.R. SOLBANI, Mrs L. Dipl.d'Etud.Sup. — Lab. de Morphogenet. Anim., Fac. des Sci., 1 Place Victor Hugo, 13 MARSEILLE 3, France a Effects of X-ray irradiation upon adult morphogenesis. Nereis diversicolor (Polychaeta) SOLERE, M. Dr.en Med. — Lab. d'Histol.-Embryol. B, Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France a Development of the brain and sensory organs in 34 day-embryo. Homo sapiens (Primates) SOLOGUB, Miss A. A. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Metaplastic potencies of embryonic and larval eye for lens and retina regeneration. Leucis- ciis bergi (Cyprinidae), Anoptichthys jordani (Characidae, Teleostei) (in collaboration with G. V. LOPASHOV) b Stimulation of metaplasia of the pure pigment epithelium of adult animals into retina by means of agents from larval (or embryonic) retina. Rana temporaria, R. esculenta (Anuca), Gallus domestictis (Aves), Mus musculus (Rodentia) (in collaboration with G. V. LOPA- SHOV) c Autoradiographic studies of the cell cycles at metaplasia of the pigment epithelium into retina. Rana temporaria, R. ridibunda (Anura) SOLOMON, J. B. Ph.D., D.Sc. — Dept. of Bacteriol., Univ. of Aberdeen, ABERDEEN, Scotland, U.K. a The foetus as an immunologically protected allograft: the chemical nature of the fibrinoid layer on giant cells of trophoblast origin. Mus musculus (Rodentia) SOLTER, D. M.D. — Inst, of Biol., Univ. of Zagreb, §alata, ZAGREB, Yugoslavia a Investigation of early differentiation; autoradiography. Rattus norvegicus (Rodentia) (in collaboration with N. SKREB) SOLTY53SKA (MARCINKOWSKA), Mrs. M. Mgr. of Sci. — Inst, of ZooL, Warsaw Univ., WARSZAWA 64, Poland SOMA, T. B.Agr.Sc. — Natl. Inst, of Anim. Industry, CHIBA-shi, 280 Japan a Transfer of fertilized eggs by non-surgical techniques. Bos taurus (Artiodactyla) SOMERS, G. F. D.Sc, Ph.D. (Med.) — Pharm. Res. Labs., Reckitt 6 Sons Ltd., Dansom Lane, HULL, E.Yorks., England a The teratogenic effects of drugs; testing of drugs for foetal toxicity. (Mammalia) SONDHI, K. C. Ph.D., Prof. — Dept. of Physiol, and Zool, Rutgers Univ., NEWARK, N.J. 7102, U.S.A. a Interacting, compensatory developmental systems and ageing. Drosophila melanogaster (Diptera) b Diffusion - reaction mechanisms in the genesis of primary patterns in morphogenesis. Drosophila melanogaster (Diptera) c Development, nucleic acids, and ageing. Drosophila melanogaster (Diptera) SORIANO, L. I. M.D. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France a Studies on RNA synthesis in embryonic skin. Gallus gallus (Aves), Mus musculus (Rodentia) SOUPART, P. M.D., Ph.D., Prof. — Dept. of Obstet. and Gynecol., School of Med.. Vanderbilt Univ., NASHVILLE, Tenn. 37203, U.S.A. SPAZIANI, E. Ph.D., Prof. — Dept. of Zool., Univ. of Iowa, IOWA CITY, Iowa 52240, U.S.A. a Mechanism of ovarian and testicular hormone action on growth and development of reproductive tissues; uterus, seminal vesicles, prostate. Rattus norvegicus (Rodentia) h Hormonal control of melanocyte differentiation and pigment synthesis. Rattus norvegicus (Rodentia) SPECTOR, C. Ph.D. — Dept. of Biol., Univ., of Pittsburgh, PITTSBURGH, Pa. 15213, U.S.A. a The possible control of development by differential biosynthesis of specific gibberellins. Gibberella fujikuroi (Ascomycetes) SPENCER, R. P. M.D., Ph.D., Prof. — Dept. of Radiol., Yale Univ., 333 Cedar St., NEW HAVEN, Conn. 06510, U.S.A. a Development of heart weight and blood volume. ( Delphinoidea, Cetacea), (Mammalia) h Development of kidney. (Mammalia) c Development of liver and of spleen. (Mammalia and others) 163 SPERRY, R. W. Ph.D. — Div. of Biol.. Calif. Inst, of Technol.,. PASADENA. Calif. 91109, U.S.A. • a The development and regeneration of behavioral nerve networks, (lower Vertebrata) SPIEGEL, Mrs. E. SCLUFER Ph.D. — Dept. of Biol. Sci., Dartmouth Coll.. HANOVER. N.H. 03755, U.S.A. a Protein changes in development. Lytechinus pictus. Strong ylocentrotus purpurafus (Echi- noidea), Rana pipiens, R. catesbeiana (Anura) (in collaboration with M. SPIEGEL) b Role of enzyme induction in development. Rana pipiens, R. catesbeiana (Anura) (in col- laboration with M. SPIEGEL) c Biochemistry of metamorphosis. Rana pipiens, R. catesbeiana (Anura) SPIEGEL. M. Ph.D., Prof. — Dept. of Biol. Sci.. Dartmouth Coll., HANOVER. N.H. 03755. U.S.A. • a Protein changes in development. Arbacia punctulata, Lytechinus pictus. Strong ylocentrotus purpuratus (Echinoidea), Rana pipiens, R. catesbeiana (Anura) (in collaboration with Mrs. E. S. SPIEGEL) b Role of enzyme induction in development. Rana pipiens, R. catesbeiana (Anura) (in col- laboration with Mrs. E. S. SPIEGEL) SPIRITO. A. Dott., Prof. — 1st. di Biol. Gen,, Fac. di Med., Univ. di Roma. Policlinico Umberto I, 00100 ROMA, Italy • SPIROFF, B. E. N. Ph.D. — Dept. of Biol., Loyola Univ., 6525 N. Sheridan Rd., CHICAGO, 111. 60626, U.S.A. a Effects of thalidomide on development. (Aves) b Function and structure of the epiphysis. (Aves) SPRATT. N. T.. Jr. Ph.D., Prof. — Dept. of ZooL, Coll. of Biol. Scis., Univ. of Minnesota, MINNEAPOLIS, Minn. 55455, U.S.A. • a Investigating the nutrient requirements essential to morphogenesis and growth in the early stages of development (pre-streak and streak blastoderms). Gallus domesticus (Aves) b Survey of dehydrogenase enzymes in early embryos. 1. Localization of enzyme activity. 2. Structural integrity and enzyme activity. Gallus domesticus (Aves) c Cytological study of the developmental center (organizer). Gallus domesticus (Aves) d Anlysis of mechanism of morphogenetic movements by time-lapse cinematography. Gallus domesticus (Aves) e Analysis of dynamic population patterns (pattern formation by free-swimming, ciliated and flagellated organisms). Tetrahymena spec. (Ciliata), Euglena spec. (Euglenophyceae) Arbacia punctulata (Echinoidea) f Integrative mechanisms in early development. (Aves) g Role of the microenvironment in cell differentiation. (Aves) SPREY, Th. E. M.Sc. — Zool. Lab., Univ. of Leiden, Kaiserstr. 63, LEIDEN, Netherlands a Histochemical aspects of differentiation of imaginal discs. Calliphora erythrocephala (Dip- tera) h Studies of cell proliferation and degeneration during development of imaginal discs. Calli- phora erythrocephala (Diptera) SPRINGER, Ch. A. M.S. — Dept. of Biol., Carnegie-Mellon Univ., PITTSBURGH, Pa., U.S.A. SRB, V. — Dept. of Biol.. Med. Fac. Charles Univ.. Simkova 870. HRADEC KRALOVfi, Czechoslovakia a Studies of chromosomes in the developing embryo; influence of ionizing radiation or chemomutagens on karyotype. Gallus gallus (Aves), Mus musculus (Rodentia) STAAL, G. B. Dr., Ir. — Lab. of Entomol.. Agric. Univ., Binnenhaven 7, P.O.B. 62, WAGENINGEN. Netherlands STACKHOUSE, H. L. Ph.D. — Dept. of Zool., Univ. of Toronto, TORONTO 5, Ont., Canada STADLER, H. Cand.phil. — Div. of Cell Biol, and Chem. Embryol., Zool. Inst., Univ. of Bern, Sahlistr. 8, CH-3000 BERN, Switzerland a Thyroxine and RNA synthesis in tadpole tissues. Xenopus laevis (Anura) (in collabor- ation with R. WEBER) STAGNI, Miss A. Dr.. Prof. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Gia- como 9, 40126 BOLOGNA, Italy a Sex determination and sex differentiation. Chlorohydra viridissima (Hydroidea) b Cytochemical and electron microscopical study of oogenesis and spermatogenesis. Chloro- hydra viridissima (Hydroidea) c Cytometric, cytochemical and biochemical study of nucleolus during oogenesis. Spirorbis pagenstecheri (Serpulidae, Polychaeta) d Inhibition by antibiotics of steroid hormone-induced sex-reserval in tadpoles. Rana dal- matina (Anura) STAMPA (DI CASTRO), Mrs. M. Dr.Biol.Sci. — 1st. di Zool. dellUniv., Viale Regina Elena 324 (al Policlinico). ROMA, Italy a Growth and differentiation of regeneration blastema in vivo and in vitro. Planaria torva, Dugesia etrusca (Turbellaria) (in collaboration with P. PASQUINI and H. MA- NELLI) 164 STANGE, Miss L. Dr.rer.nnt.. Prof. — Inst, fiir Botanik, Techn. Hochschule. Herrenhauser Str. 2. 3 HANNOVER. W.Germany STANISSTREET, M. B.Sc. — Anat. Dept., The Med. School. University Walk. BRISTOL BS8 ITD, England a InvesLigation of protein changes during early developmental stages by immunological and electrophoretic methods. Xenopus laevis (Anura) STAPLES. R. E. Ph.D. — Merck Inst, for Therapeutic Research. WEST POINT, Pa. 19486, U.S.A. a Zygote development (physiological, biochemical). Oryctolagus cuniciilus (Lagomorpha), Rafttts norvegicus, Mus musciilus (Rodentia) b Teratology. Oryctolagus cuniculus (Lagomorpha), Ratfus norvegicus, Mus musculus, Mcsocricetus auratus (Rodentia) STARCK. D. Dr.med.. Prof. — Dr. Senckenberg Anat. Inst.. Med. Fak. der Univ., Ludwig Rehnstr. 14, FRANKFURT/Main-Sud. W.Germany • STARRE H. van der Drs.biol. — Dept. of Med. Anat. and Embryol., State Univ. of Utrecht. Janskerkhof 3A, UTRECHT. Netherlands a Eye lens induction in vitro. Gallus domesticus (Aves) h Histochemistry of eye lens inductors. Gallus domesticus (Aves) STARRE (VAN DER MOLEN). Mrs. L. G. van der M.Sc. — Zool. Lab., Univ. of Leiden, Kaiserstr. 63. LEIDEN, Netherlands a Histochemical aspects of embryonic development. Calliphora erythrocephala (Dipteca) StASTN?. F. M.D. — Lab. of Embryophysiol., Inst, of Physiol., Fac. of Gen. Med., Charles Univ.. Albertov 5. PRAGUE 2, Czechoslovakia a Development of extracellular and intracellular environment of foetal brain tissue (physical and chemical). (Aves; Mammalia) b Development of membrane ATP-ase system in cellular and subcellular elements of fetal brain tissue. Relations to the endocrine factors. (Aves) STEARNER. Miss S. P. Ph.D. — Div. of Biol, and Med. Research, Argonne Natl. Lab., 9700 South Cass Ave., ARGONNE, 111. 60439, U.S.A. a Radiation effects on developing circulatory system STEDING, G. Priv.Doz., Dr.med. — Anat. Inst, der Univ., Kreuzbergring 36, 34 G5T- TINGEN. W.Germany a E.xperimente zur Entwicklung des Riickenmarkes. Gallus gallus (Aves) b Selbstdifferenzierung der Somiten. Gallus gallus (Aves) c Fruhentwicklung. Gallus gallus (Aves) d Strukturentwicklung des Uterus. Homo sapiens (Primates) e Experimente zur Entwicklung der Extremitaten. (Aves) f Experimentelle Analyse der Epitheldifferenzierung. Gallus gallus (Aves) g Autoradiographische Analyse von Entwicklungsbewegungen embryonaler Organanlagen. Gallus gallus (Aves) STEER. H. W. Ph.D. — Dept. of Anat.. St. Thomas's Hosp. Med. School. LONDON S.E. 1, England a Mechanism of implantation (in vivo and in vitro) by ultrastructural and chemical analyses. Oryctolagus cuniculus (Lagomorpha) h Morphology and composition of the trophoblast. Oryctolagus cuniculus (Lagomorpha) STEFAN. Miss Y. Dr.es Sci. — Lab. de Zool. et d'Embryol. Exper.. Univ. de Strasbourg, 12 rue de I'Universite, STRASBOURG, France STEFANELLI, A. Dr., Prof.ord. — Inst, di Anat. Comp. "Battista Grassi". Fac. di Sci., Univ. di Roma. Via A. Borelli 50, 00161 ROMA. Italy • a Nervous microsystems in v i t ro. Gallus domesticus (Aves) STEGEMAN. Miss J. H. J. — Zool. Lab., Univ. of Amsterdam, Plantage Doklaan 44, AMSTERDAM, Netherlands a Foetal growth in relation to size and development of placenta during pregnancy. Ovis aries (Artiodactyla) STEGNER, H.-E. Dr.med. — Universitats-Frauenklinik, Martinistr. 52, 2-HAMBURG 20, W.Germany a Electron microscopy of oogenesis. Homo sapiens (Primates) h Experimental developmental morphology; electron microscopy. (Rodentia) STEIN. Miss K. F. Ph.D., Prof. (Emer.) — Dept. of Biol. Sci.. Clapp Lab.. Mount Holyoke Coll.. SOUTH HADLEY, Mass. 01075. U.S.A. a The culture in vitro of mutant embryos, e.g. Lp/Lp; tracer studies (Rodentia) h Development of inherited anomalies, e.g. eyes open at birth, circling behaviour. (Rodentia) STEINBERG. M. S. Ph.D.. Prof. — Dept. of Biol., Princeton Univ.. PRINCETON, N.J. 08540, U.S.A. • a Direct measurements of strengths of intercellular adhesions among embryonic cells. Gallus domesticus (Aves) h Mechanisms in cell aggregation and tissue reconstruction. (Ponfera) , Rana pipiens (Anura) , Gallus domesticus (Aves) c Physics and chemistry of cell surfaces in relation to cell adhesion. (Porifera) , Gallus domesticus (Aves) 165 d Mechanisms governing "contact inhibition" of mitosis and of cell movement (various tissue culture cell strains) e Mechanisms of nerve-end organ integration (studies of reflex behavior after regeneration of sensory nerves into a topographically rearranged integumental field). Rana pipiens (Anura) STEINITZ, H. Ph.D., Prof. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERUSALEM, Israel STENGER (HAPPEN) , Mrs. K. E. Dr.es. Sci. — Inst. d'Embryol. et Teratol, exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, Prance — Lab. d'Embryol. exper. du Coll. de Prance, 11 Place M. Berthelot, PARIS Ve. Prance • a Recherches sur la differenciation et I'intersexualite in vitro et in vivo des gonades embryonnaires. (Aves) b Biosynthese des hormones steroides sexuelles par les gonades embryonnaires. (Aves) (en collaboration avec Mrs. L. CEDARD) STfiPHAN, P. Dr.es Sci., Prof. — Lab. de Zool., Fac. des Sci. de Nancy, 30 rue Ste Catherine, 54 NANCY, Prance a Les malformations cardio-vasculaires: analyse causale de Taction teratogene de diverses substances, par ex. bleu trypan. Gallus gallus (Aves) h Teratologic: origine, evolution et transmission des lesions, excroissances et duplications. Dugesia tigrina (Turbellaria) (en collaboration avec J. SCHILT) c Developpement du systeme tracheen chez la larve (etude experimentale). Tipula flavo- lineata (Diptera) (en collaboration avec J. C. PIHAN) STEPHAN (DUBOIS), Mrs. P. Dr.es Sci. — Lab. de Zool., Pac. des Sci. de Nancy, 30 rue Ste Catherine, 54 NANCY, France • a Migration et differenciation des cellules de regeneration. (Planaciidae; Oligochaeta micro- drila; Polychaefa errantia) b Anomalies de la regeneration. (Planariidae; Olichaefa microdrila; Polychaefa errantia) STEPHENSON, N. G. Ph.D. — School of Biol. Sci., Zool. Building, Univ. of Sydney. SYDNEY, N.S.W. 2006, Australia a Culture of embryonic organs and tissue explants under pressure. (Vertebrata) b Action of malignant mammalian cells on pre-adult amphibian cells: in vitro and in vivo. (Amphibia, Mammalia) c Descriptive embryology. (Marsupialia) STERBA, O. — Dept. of Morphol., Inst, of Vertebr. Zool., Czechoslov. Acad, of Sci., Kvetna 8, BRNO, Czechoslovakia a Prenatal development of muscles. (Marsupialia; Insectivora; Chiropfera; Rodentia; Artio- dactyla) STERN, C. Ph.D., Prof. — Dept. of Zool.. Univ. of California, BERKELEY, Calif. 94720, U.S.A. a Developmental genetics of pattern formation. Drosophila melanogasfer (Diptera) h Pleiotropic effect of genes. Drosophila melanogasfer (Diptera) STERN, H. Ph.D., Prof. — Dept. of Biol., Univ. of California, San Diego, P.O. Box 109. LA JOLLA, Calif. 92037. U.S.A. • a Regulation of DNA synthesis during meiotic development. Trillium erectum, Lilium longi- florum, Tulipa gesneriana, Vicia faba, Bellevalia romana (Angiospermae) h Developmental genetics. Marchantia polymorpha (Hepaticae) STERN, K. M.D., Prof. — Dept. of Pathol., Univ. of Illinois, 1853 W. Polk St., CHICA- GO, 111. 60612. U.S.A. a Relationship of reticulo-endothelial function to growth processes, as exemplified by liver regeneration after partial hepatectomy. Rattus spec, Mas musculus (Rodentia) h Effect on organ growth of administration of isogeneic subcellular tissue fractions to weanlings of inbred strains. Mus musculus (Rodentia) STERN, S. Ph.D. — Div. of Popul. Dynamics; School of Hyg. and Publ. Health, Johns Hopkins Univ., 615 N. Wolfe St., BALTIMORE, Md. 21205, U.S.A. a Carbohydrate metabolism in pre-implantation embryos as related to glycogen metabolism; culture of embryos. Mus musculus (Rodentia), Homo sapiens (Primates) h Composition of ovarian and tubal secretions. Mus musculus (Rodentia), Homo sapiens (Primates) c Hormonal control of ovulation. Mus musculus (Rodentia) d Ultrastructure of pre-implantation embryos. Mus musculus (Rodentia) STETLER, D. A. Ph.D. — Dept. of Botany, Univ. of Minnesota, MINNEAPOLIS, Minn. 55455. U.S.A. a Effects of alkaloids and steroids on differentiation of tissue cultures. Papaver somniferum (Papaveraceae) STEVEN, D. H. M.A., Vet.M.B. — Anat. School. Sub-Dept. of Vet. Anat., Univ. of Cambridge, Tennis Court Rd., CAMBRIDGE CB2 IQS, England a Organization of placental blood vessels in relation to physiological exchange. Ovis aries (Artiodactyla), Equus caballus (Perissodactyla) 166 STEVENS, L. C. Ph.D. — The Jackson Lab.. BAR HARBOR, Me. 04609, U.S.A. • a Histogenesis of testicular teratoma (strain 129). Mas musculus (Rodentia) b Developmental genetics. Mus musculus (Rodentia) STEVENSON. J. ROSS Ph.D., Prof. — Dept. of Biol. Sci., Kent State Univ., KENT, Ohio 44240. U.S.A. a Study of control of epidermal chitin biosynthesis for the developing cuticle by chemical assays and radiotracers. Orconectes sanborni. O. obscurus (Decapoda, Crustacea) STEWART, J. A. Ph.D. — Biochem. Dept., Univ. of New Hampshire. DURHAM. N.H. 03824, U.S.A. a A study of the turnover of proteins during central nervous system development. Mas musculus (Rodentia) STINSON, B. D. Ph.D. — Dept. of Anat., Med. Coll., Cornell Univ.. 1300 York Ave.. NEW YORK, N.Y. 10021, U.S.A. STOCK, A. Ph.D.. Prof. — Dept. of Zool., Fac. of Sci., Univ. of New England, ARMI- DALE, N.S.W. 2351. Australia a Regeneration and the endocrine system. Blaftella germanica (Dictyopfera) (in collaboration with A. F. O'FARRELL) STOCKDALE. F. E. M.D., Ph.D. — Dept. of Med.. School of Med.. Stanford Univ.. STANFORD, Calif. 94305, U.S.A. a Mechanisms of skeletal muscle differentiation, with special reference to DNA synthesis and cell division. Gallus domesticus (Aves) h Mechanisms of hormone-dependent differentiation in mammary gland tissue in vitro, with special reference to DNA synthesis and cell division. Mus musculus (Rodentia) STOCUM, D. L. Ph.D. — Dept. of Zool., Univ. of Illinois. URBANA. 111. 61801. U.S.A. a Regeneration. (Vertebrata) STOLL. R. Dr.en Med., Dr.es Sci., Prof. — Lab. de Biol.. Fac. de Med., Univ. de Bordeaux, 33 BORDEAUX, France a Differenciation sexuelle. (Aves) h Physiologie des glandes endocrines embryonnaires. (Aves) c Teratologic. (Aves) STONE, L. S. Ph.D.. Prof. — Anat. Dept.. Yale Univ., 333 Cedar St., NEW HAVEN, Conn. 06520, U.S.A. • STOUT, V. M. Ph.D. — Dept. of Zool. Univ. of Canterbury, Priv. Bag, CHRIST- CHURCH, New Zealand a Descriptive embryology. Lepidurus apus (Notostraca, Crustacea), Daphnia magna (Cla- STRATFORD (MILLER), Mrs. B. F. Ph.D. — School of Anat., Univ. of Melbourne. PARKVILLE 3052. Vict., Australia a Developmental anatomy and pathology of the placenta. Homo sapiens (Primates) b Postnatal development of the lung. Dasyuroides byrnei (Marsupialia) STRAUSS, F. M.D., Prof. — Dept. of Anat., Univ. of Bern. 26 Biihlstr.. CH-3012 BERN. Switzerland • a Comparative implantation and placentation. (Mammalia) b Comparative anatomy of the female reproductive system. (Mammalia) STRAY (BREISTEIN), Mrs. L. — Inst, of Anat.. Univ. of Bergen. BERGEN, Aarstad- vollen, Norway a An experimental study of the development of the trigeminal ganglion. Gallus domesticus (Aves) h Regeneration of the motor root of the trigeminal nerve following extirpation of the proximal portion of the trigeminal nerve and the trigeminal ganglion in early embryonal stages (Hamburger and Hamilton stages 16-17). Gallus domesticus (Aves) STRAZNICKY, Ch. Ph.D. — Anat. Dept., Med. Univ., Dischka u 5, PfiCS, Hungary STREETT, J. C. Ph.D. — Div. of Sci., Texas Wesleyan Coll.. FORT WORTH, Tex. 76105, U.S.A. STREIFF, W. Dr.es Sci. — Lab. de Zool, Fac. des Sci., 14 CAEN, France STROEVA, Miss O. G. Dr.biolsci. — Lab. of Developm. Cytogenet., Inst, of Developm. Biol, Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. STROM, R. Fil.lic. — Zool Inst., Univ. of Uppsala, Villavagen 9, 751 22 UPPSALA. Sweden a Larval development. (Bryozoa) STROMBERG, J.-O. Fil.lic. — Dept. of Zool, Univ. of Lund, Helgonavagen 3. S-223 62 LUND. Sweden a Early development and organogenesis. Cyathura polita (Anthuridea), Bopyroides hip- polytes. Hemiarthrus abdominalis, Pseudione crenulata (Epicacidea. Isopoda, Crustacea) STRUDEL. G. Dr.es. Sci. — Inst. d'Embryol et Teratol exper. du C.N.R.S. 49 bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France — Lab. d'Embryol. exper. du Coll de France, 11 Place Marcelin Berthelot, PARIS Ve, France • a Developpement du systeme nerveux orthosympathique. (Aves) h Developpement de la colonne vertebrale. (Aves) 167 c Role inducteur de la chorde et du tube nerveux; chondrogenese. (Aves) d Teratologie de la colonne vertebrale. (Aves) e Ultrastructure du cartilage vertebral. (Aves) STUBBS. J. D. Ph.D. — Dept. of Cell and Molec. Biol., School of Nat. Sci., San Francisco State Coll., SAN FRANCISCO, Calif. 94132, U.S.A. a Development of techniques for assay and quantitation of differential gene activation with use of germinating spores as a model developmental system. Bacillus subtilis (Bacteria) STUCHLY, Z. Dr., Prof. — Kat. i Zaklad Biol. Ogolnej. Med. Acad, of Wrodaw, Bujwida 9, WROCLAW, Poland STURROCK, R. R. M.B., Ch.B. — Dept. of Anat., Univ. of Dundee, DUNDEE DDl 4HN, Scotland, U.K. a Measurements of the distance between neuroglia nuclei in fibre tracts of the postnatal brain and its relation to the number of myelinated fibres present. Afus musculus (Rodentia) STYCZYSSKA-JUREWICZ. Mrs. E. Ph.D. — Nencki Inst, of Exper. Biol., Dept. of Exper. Hydrobiol., ul. Pasteura 3, WARSZAWA 22, Poland SUBTELNY. S. Ph.D., Prof. — Dept. of Biol., Rice Univ., HOUSTON, Tex. 77001, U.S.A. • SUCH (RAZIMBAUD), Mrs. J. Dr.Biol.anim. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Recherches descriptives et experimentales sur le developpement erabryonnaire de I'oeil compose. (Insecta) SUDARWATI, Miss S. Drs. — The Bandung Inst, of Technol., Dept. of Chem. and Biol., Djalan Ganesa 10, BANDUNG, Indonesia a Mesoderm formation in the blastula (stage 8+). Xenopus laevis (Anura) SUGIE, T. Ph.D. — Natl. Inst, of Anim. Industry, CHIBA-shi. 280 Japan a Transfer of fertilized eggs by non-surgical techniques. Bos taurus, Capra hircus (Artio- dactyla) SUGINO, H. D.Sc, Prof. — Dept. of Biol.. Osaka Kyoiku Univ., Ten-noji-ku, OSAKA, 543 Japan • a Differentiation of neoblasts. Dugesia japonica (Turbellaria) b In vitro culture of blastema. Dugesia japonica (Turbellaria) SUGIYAMA, M. D.Sc, Prof. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, Mie-ken, (517) Japan • a Physiological studies on fertilization and artificial parthenogenesis. Hemicentrotus pul- cherrimus, Pseudocentrotus depressus (Echinoidea) (in collaboration with M. ISHIKA- WA) SULLIVAN, G. E. Ph.D. — Dept. of Histol. and Embryol., Univ. of Sydney, SYDNEY, N.S.W., Australia a Effects of paralysis and amniotic pressures on the skeletomuscular system of the embrya Gallus spec. (Aves) h Studies on teratogenic effects of antimalarial drugs. Rattus norvegicus (Rodentia) SUNDARARAJ, B. I. Ph.D. — Dept. of Zool., Univ. of Delhi, DELHI-7, India SUSSEX. I. M. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. a Histodifferentiation in tissue cultures. Eucalyptus camaldulensis (Dicofyledonae) SUSSMAN, A. S. Ph.D., Prof. — Dept. of Botany,, Univ. of Michigan, ANN ARBOR, Mich. 48104, U.S.A. SUSSMAN, M. Prof. — Dept. of Biol., Brandeis Univ., WALTHAM, Mass. 02154 U.S.A. • a Genetic and developmental studies. Dictyostelium spec. (Acrasiales) (in collaboration with Mrs. R. B. R. SUSSMAN) SUSSMAN. Mrs. R. B. ROTMAN Ph.D. — Dept. of Biol., Brandeis Univ., WaLTHAM, Mass. 02154, U.S.A. a Genetic and developmental studies. Dictyostelium spec. (Acrasiales) (in collaboration with M. SUSSMAN) SUTTER, B. C J. Dr.es Sci. — Lab. de Physiol. Anim., Fac. des Sci.. B.P. 347, 51 REIMS, France a Endocrine function of the foetal pancreas; insulin blood levels in the foetus and in the mother. Rattus norvegicus (Rodentia) (in collaboration with R. L. JACQUOT, J. M. FELIX and Mrs. M. T. SUTTER (DUB)) SUTTER (DUB), Mrs. M. T. D.E.S. — Lab. de Physiol. Anim., Fac. des Sci., B.P. 347, 51 REIMS, France a Endocrine function of the foetal pancreas; insulin blood levels in the foetus and in the mother. Rattus norvegicus (Rodentia) (in collaboration with R. L. JACQUOT, J. M. FELIX and B. C. J. SUTTER) SUZUKI, Y. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210, U.S.A. a Biochemical studies of early development. Hyalophora cecropia and other spp. (Lepi- doptera) (in collaboration with D. D. BROWN) SVAJGER, A. M.D., D.Sc. — Inst, of Histol. and Embryol., Univ. of Zagreb, Salata 3. P.O.B. 422, ZAGREB, Yugoslavia 168 a Investigation of early differentiation; transplantation, in vitro culture. Rattus nocve- giciis (Rodentia) (in collaboration with Mrs. B. LEVAK (SVAJGER) and N. SKREB. Inst, of Biol.) b Investigation on developmental capacities of tissues of the chorioallantoic membrane. Gallus domcsficus (Aves) (in collaboration with Mrs. B. LEVAK (SVAJGER) and N. SKREB. Inst, of Biol.) c Investigation of chondrogenesis in the external ear. Rattus norvegicus (Rodentia) SWANEPOEL, J. H. D.Sc. — Dept. of Zool.. Rand Afrikaans Univ.. P.O. Box 524. JOHANNESBURG. S.Africa a Comparative embryology; ontogenetic development of the neurocranium and of the vis- cerocranium. Breviceps adspersus (Anuca) b Embryonic development. Barbus capensis (Teleostei) SWANSON (EARTLY), Mrs. H. H. Ph.D. — Dept. of Anat.. Med. School. Univ. of Bir- mingham. Edgbaston, BIRMINGHAM 15, England a Effects of gonadal hormones given shortly before or after birth on sex-typical morphology, function and behaviour. Cricetus auratus, Rattus norvegicus (Rodentia) SWANSON, R. F. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 W. University Parkway, BALTIMORE, Md. 21210. U.S.A. a Deoxyribonucleic acid synthesis during early development. Xenopus laevis (Anura) (in collaboration with I. DAWID) SWARUP, K. D.Phil. — Dept. of Zool, Univ. of Gorakhpur, GORAKHPUR (U.P.), India a Reproductive biology and endocrinology of a viviparous species with special reference to the possible role of the pituitary in the regulation of pregnancy. (Teleostei) h Radiobiological and endocrinological studies on the thyroid "light cells" at various devel- opmental stages. (Vertebrata) SWIFT. H. H. Prof. — Dept. of Biol., Div. of Biol. Sci.. Univ. of Chicago, CHICAGO, 111. 60637, U.S.A. a Structure and function of nucleic acids in chromosome, mitochondria and chloroplasts SZAMBORSKI, J. J. M.D. — Lab. of Pathol. Anat., Clinic of Obstetr. and Gynecol. II, Med. School, ul. Karowa 2, WARSZAWA, Poland a Tumours of the mesonephric derivatives in the female genital tract (uterus and ovary). Homo sapiens (Primates) h Histological and histochemical features of the stroma of the uterine mucosa (normal changes due to age; metaplasia; regenerative processes; malignancy). Homo sapiens (Primates) SZfiKELY, C. M.D., Prof. — Dept. of Neuropathol., Research Station of TTrgu-Mure§ of the Acad, of the S.S.R., Str. Gh. Marinescu 38, TIRGU-MURE§, Rumania SZEKELY. G. M.D. — Anat. Dept., Med. Univ., Dischka u 5, PfiCS, Hungary • TABAN, Ch. H. Dr.es Sci., Dr.med.. Prof. — Dept. of Anat., Michigan State Univ., EAST LANSING, Mich. 48823, U.S.A. a Action of antisera on regeneration. Triturus spec. (Urodela) h Tolerance of xenograft compared to homograft and related problems. Ambystoma mexi- canum and other spp. (Urodela) TAGUCHI, S. Ph.D. — Div. of Biol.. Natl. Inst, of Radiol. Sci., Anagawa 4-9-1. CHIBA, (280) Japan a Biochemical studies on effect of radiation on the embryo. Oryzias latipes (Teleostei), Bufo vulgaris (Anura) TAHARA, Y. D.Sc. — Dept. of Biol.. Osaka Kyoiku Univ., Ten-noji-ku, OSAKA. 543 Japan a Dynamic aspects of interaction between embryo and Myxovirus. (Aves) h Development of sexual characters, primary and secondary. ( Echinodermata) TAHMISIAN. T. N. Ph.D. — Div. of Biol, and Med. Research, Argonne Natl. Lab.. 9700 South Cass Ave.. ARGONNE, 111. 60439, U.S.A. a Effects of ionizing irradiations on tissue differentiation and metabolism in embryos. Melanoplus diff. differentialis (Orthoptera) b Induction and differentiation of striated muscle (electron microscopy). Helix aspersa (Pul- monata. Gastropoda) , Melanoplus diff. differentialis (Orthoptera), Branchydanio rerio, B. albolineatus (Cyprinidae. Teleostei), Gallus domesticus (Aves) TAKAHASHI, H. D.Sc. — Dept. of Comp. Endocrinol.. Inst, of Endocrinol., Gunma Univ., Showa-machi, MAEBASHI, Japan TAKANO, K. M.D., Prof. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo-ku, KYOTO 606, Japan a Teratogenesis of the offspring in maternal alloxan diabetes. Rattus norvegicus (Rodentia) h RNA synthesis in the fetal membranes. Rattus norvegicus (Rodentia) c Epidemiological studies on anomalies in embryos. Homo sapiens (Primates) TAKATA. Miss Ch. f Ph.D. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH, EH9 3JN, Scotland, U.K. (deceased) TAKATA, K. D.Sc. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan • 169 TAKAYA. H. D.Sc. Prof. — Dept. of Biol., Fac. of Sci., Konan Univ., Okamoto. Motoya- ma-cho, Higashi-nada-ku, KOBE, Japan • a Regional differentiation of the central nervous system. Triturus spec, Hynobius spec, Bufo spec, Rana spec (Amphibia) b Chemical phenocopies. Drosophila melanogaster (Diptera) c Change of ultrastructure during differentiation of embryonic cells. (Amphibia) TAKEDA. H. M.D., Dr.Med.Sci., Prof. — Dept. of Anat., Div. I, Kobe Univ. School of Med., Kusunoki-cho 7, Ikuta-ku, KOBE, (650) Japan a Phylogenetic and ontogenetic studies on the cerebellum and inferior olive. (Veriebcata) TAKITA, S. M.D., Ph.D., Prof. — Dept. of Surg., School of Med., Tokushima Univ., Kura- moto-cho. TOKUSHIMA-City, 770 Japan a Functional development of the alimentary tract and of the biliary tract in the earlier stages of the fetus. Homo sapiens (Primates) TAKITA, T. M.Agric — Dept. of Aquatic Biol., Fac. of Fish., Nagasaki Univ., Bunkyo- machi 1-14, NAGASAKI, Japan TAKOR, T. T. — Dept. of Anat., Univ. of Ibadan, IBADAN, Nigeria TAMANOI, I. Ph.D. — Div. of Radiat. Hazards, Natl. Inst, of Radiol. Sci., Anagawa 4-9, CHIBA. Japan a Modification of inducing agents of guinea pig liver by immunological technique. Triturus pyrrhogaster (Urodela) b Studies on the appearance of function in embryonic heart by using micro-electrography. Gallus domesticus (Aves) c Radiation effects on haematopoietic organs (immuno-chemical study). Mus musculus (Ro- dentia) TAMARELLE (GARAUDY), Mrs. M. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des Facultes, 33 TALENCE, France a Developpement embryonnaire. (Collembola) TAMBOISE, E. Dr.en Med.. Prof. — Lab. d'Histol.-Embryol. B, Fac. de Med., 45 rue des Sts. Peres, PARIS Vie, France a Etude des troubles du developpement de I'embryon sous Taction des radiations ionisantes. Mus rattus (Rodentia) b Etude des alterations chromosomiques (repartition et type des lesions chromosomiques) chez I'embryon sous Taction des radiomimetiques en fonction de Torganogenese. Mus rattus (Rodentia) TANAKA, K. M.A. — Inst, of Zool., Fac. of Sci., Tokyo Kyoiku Univ., Otsuka 3-29-1, Bunkyo-ku, TOKYO, Japan a Recognition of specificity in compound forms. Botryllus primigenus, Botrylloides violaceum (Ascidia) (in collaboration with H. WATANABE) TANAKA, O. M.D. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo-ku, KYOTO 606, Japan a Epidemiological studies on skeletal anomalies in embryos and early foetuses. Homo sapiens (Primates) b Tests on drug teratogenicity TANDAN, B. K. Ph.D. — Dept. of Zool., Univ. of Lucknow, LUCKNOW, India TANIMURA, T. M.D. — Dept. of Anat., Fac. of Med., Kyoto Univ., Konoe-cho, Yoshida. Sakyo-ku. KYOTO, Japan — Dept. of Pediat., School of Med., Univ. of Washington, SEATTLE, Wash. 98105, U.S.A. a Effects of teratogens on embryos in vitro. Rattus norvegicus (Rodentia) (in collab- oration with T. H. SHEPARD) TANNER, E. A. Ph.D. — Dept. of Anim. Sci., North Carolina State Univ., P.O. Box 5127, RALEIGH, N.C. 27607, U.S.A. a Metabolism of preiraplantation embryos. Mus musculus (Rod/entia) b Effects of stress (high temperature) on embryonic survival. Mus musculus (Rodentia) TARDENT, P. Dr.Phil., Prof. — Zool.-Vergl. Anat. Inst., Univ. Ziirich, Kiinstlergasse 16, CH-8006 ZURICH. Switzerland • a Regeneration and sex determination. Hydra attenuata (Hydroidea) b Regeneration. Tubularia larynx (Athecata, Hydrozoa) c Morphogenesis. Podocoryne carnea (Athecata, Hydrozoa) d Regeneration. Branchiura sowerbyi (Oligochaeta) TARDIF, B. Prof.agr. — Lab. d'Anat. Norm., 41 rue St. Girardin, 76 ROUEN, France TARKOWSKI, A. K. Ph.D., D.Sc. — Dept. of Embryol., Zool. Inst., Univ. of Warsaw, Krakowskie Przedmiescie 26/28, WARSAWA 64, Poland • a Mechanisms of cell differentiation in early development. Mits musculus (Rodentia) b Experimental chimerism. Mus musculus (Rodentia) c Sexual differentiation and gametogenesis. Mus musculus (Rodentia) TARTAR. V. Ph.D., Prof. — Dept. of Zool., Univ. of Washington Field Lab.. R.l Box 250. NAHCOTTA, Wash. 98637, U.S.A. a Production of decorticated cells by micrurgical or chemical methods. Stentor coeculeus (Ciliata) 170 b Cytokinesis studied by micrurgy. Stentor coeruleus (Ciliata) c Effects of single heat shocks. Stentor coeruleus (Ciliata) d Mouthparts induction in the oral primordium. Stentor coeruleus (Ciliata) e Production of cells with conflicting polarities by rotating longitudinal halves 180°. Stenfot coeruleus (Ciliata) TASSAVA, R. A. Ph.D. — Dept. of Zool., Coll. of Biol. Sci., Ohio State Univ., 1735 Neil Ave.. COLUMBUS, Ohio 43210, U.S.A. a Studies of the role of hormones in limb regeneration. (Amphibia) TATA, J. R. Dr.es Sci. — Natl. Inst, for Med. Research, Mill Hill, LONDON N.W.7, England a Thyroid hormone-induced metamorphosis. Rana catesbeiana, Xenopus laevis (Anura) h Effect of hormones on organ cultures. Rana spec. (Anura) c Effect of androgens and oestrogens on the development of accessory sexual tissues. Rattus noruegicus (Rodentia) d Early metamorphic competence of larvae: biochemical analysis of the acquisition of re- sponse of very early stages of larval cells (Nieuwkoop-Faber stages 38-41) to thyroid hormones that resembles spontaneous metamorphic response at later stages. Xenopus laevis (Anura) e Anti-metamorphic effect of prolactin: effect of ovine prolactin in preventing developmental changes induced by thyroid hormones studied at the level of nucleic acid synthesis in target tissues (liver, tail, skin). Rana catesbeiana (Anura), Diemictylus viridescens (Urodela) TA VERNE, M. — Zool. Lab.. Univ. of Amsterdam. Plantage Doklaan 44, AMSTERDAM, Netherlands a Umbilical sphincter. Oryctolagus cuniculus (Lagomorpha) TAYLOR, A. C. Ph.D., Prof. — Dept. of Anat.. The Univ. of Texas Dental Branch. HOUSTON, Tex. 77025, U.S.A. • TAYLOR, Miss E. L. B.A. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol.-Embryol., School of Dental Med.. Univ. of Pennsylvania. PHILADELPHIA, Pa. 19104, U.S.A. a Maintenance of differentiation in cultured heart cells. Gallus domesticus (Aves) TAYLOR, Miss J. M. Dr. — Lab. of Cell. Biol., Dept. of Biol. Sci.. Wellesley Coll., WELLESLEY, Mass. 02181, U.S.A. a Postnatal differentiation of three fiber types in skeletal muscle (electron microscopy and histochemistry). Rattus noruegicus (Rodentia) (in collaboration with Miss G. F. GAU- THIER, and Miss H. A. PADYKULA) b Differentiation of neuromuscular junctions in skeletal muscle (electron microscopy and histochemistry). Rattus norvegicus (Rodentia) (in collaboration with Miss G. F. GAU- THIER and Miss H. A. PADYKULA) c Ovarian-uterine-placental relationship (electron microscopy and histochemistry). Didelphys virginiana (Macsupialia) (in collaboration with Miss G. F. GAUTHIER and Miss H. A. PADYKULA) d Lipid transport by the yolk sac placenta (electron microscopy and histochemistry. Rattus norvegicus (Rodentia) (in collaboration with Miss G. F. GAUTHIER and Miss H. A. PADYKULA) TAYLOR, L. W. Ph.D., Prof. (Emer.) — Dept. of Poultry Husbandry, Fac. of Agric, Univ. of California, BERKELEY, Calif. 94720, U.S.A. a Lethal genes: inheritance, interrelationships and effects of selection. Gallus gallus (Aves) h O2 and CO2 requirements and tolerances in development. Gallus gallus (Aves) TCHELEBI (PAPILLON), Mrs. M. — Lab. d'Evolution des Etres Organises, Fac. des Sci.. 105 Bd. Raspail, PARIS Vie, France a Influence of physical factors upon egg development. Schistocerca gregaria (Accididae, Orthoptera) TCHERNIAEV, G. Cand.Sci.Biol. — Inst. Limnol. de I'Acad. des Sci. de I'URSS, LIST- VENITCHNOIE sur Baikal, region d'Irkoutsk, U.S.S.R. a Developpement de I'omoul du Baikal. Cocegonus autumnalis migratorius (Teleostei) h Developpement des cottides du Baikal. Comephorus baikalensis, C. dybowski (Cottidae, Teleostei) TEITELMAN (de PINCZUK), Mrs. G. N. Lie. — Dept. of Biol, Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104, U.S.A. a Protein synthesis in normal and lobeless embryos analyzed by disc electrophoresis. Ily- anassa obsoleta (Gastropoda) TELEPNEVA, Miss S. A. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. TEMIN, H. M. Ph.D., Prof. — McArdle Lab. for Cancer Research, Univ. of Wisconsin, 450 N. Randall Ave., MADISON, Wis. 53706, U.S.A. a Changes in fibroblasts induced by oncogenic viruses (Rous sarcoma virus). Gallus domeS' ticus (Aves) 171 TEMPEL, K. Dr.med.vet. — Inst, fiir Pharmakol., Toxicol, und Pharmazie der Tierarztl, Fak. der Univ. Munchen, Veterinarstr. 13, MUNCHEN 22, W.Germany a Investigations on functions of DNAses in embryonic tissues. Gallus domesticus (Aves) b Effect of ionizing radiations and biological alkylating agents on embryonic DNA and DNAses. Gallus domesficits (Aves) c Infuence of nuclease inhibitors (polyanions) on nucleic acid metabolism in the embryo. Gallus domesticus (Aves) d Phosphatases and lysosomes in embryonic tissues; behaviour during development and under the influence of ionizing radiation and biological alkylating agents. Gallus domes- ticus (Aves) TEMPLE, D. — Lab. d'Histol.. Fac. de Med., 2 rue Ecole de Medicine. 34 MONTPELLIER. France a Oviform development of primary spermatogonia. Triturus spec. (Urodela) b Electron microscopic studies on Bidder's organ. Bufo spec. (Anura) TENCER, Miss R. Dr.en Sci. — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Metabolism during development. Paracentrotus spec, Arbacia spec. (Echinoidea) , Am- bystoma spec, Pleurodeles spec. (Urodela), Bufo spec, Rana spec. (Anura) TEPLITZ. Miss N A. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R.. Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Restoration of regeneration capacity of limbs after X-irradiation (biochemical study). Ambystoma mexicanum (Urodela) (in collaboration with L. V. POLEZHAEV and Mrs. S. J. TUCHKOVA) TERAYAMA, H. Ph.D., Prof. — Zool. Inst.. Univ. of Tokyo, Hongo 7-3, Bunkyo-ku, TOKYO, (113) Japan a Studies on composition and biochemical activities of germ cell nuclei and early changes after fertilization. Pseudocentrotus depcessus (Echinoidea) b Mechanism of homeostatic growth regulation in liver regeneration. Rattus norvegicus ( Rodent ia) TESTA-BAPPENHEIM, I. Dr.med.A.O., Prof. — 1st. di Antropol. Criminol. dell Univ., C.so G. Galilei, Nr. 22, TORINO, Italy a Experimental embryology. Triton alpestris, T. taeniatus (Urodela) h Developmental genetics. Homo sapiens (Primates) c Developmental pathology. Homo sapiens (Primates) TEUCHERT, Mrs. G. Dr.rer.nat. — Inst, fur Flugmedizin der DFVLR, Kolnerstr. 70. 532 BAD GODESBERG, W.Germany a Embryology. (Bdelloidea, Rotatoria) h The influence of simulated weightlessness by rotation on the early development (polariza- tion). Ascaris (Nematoda), (Anura) (in collaboration with W. BRIEGLEB) c The influence of simulated weightlessness (by submersion) on metamorphosis. (Anura) (in collaboration with W. BRIEGLEB) TEULADE, P. Dr.es Sci. — Sect, de Biol. Gen. et Appl., Univ. de Lyon, 43 Bd. du 11 Novembre 1918, 69 VILLEURBANNE. France a Action des rayonnements sur le developpement embryonnaire. Bombyx mori (Lepidoptera) THEILER, K. Dr., Prof. — Anat. Inst, der Univ., Gloriastr. 19, 8006 ZURICH Switzerland land THEISE, H. Dipl.Chem. — Inst, fur Zellphysiol., Deutsche Akad. der Wissensch. zu Berlin. Lindenberger Weg 70, 1115 BERLIN-Buch. East.Germany THESINGH. Miss C. W. M.D. — Lab. for Cell Biol, and Histol., Fac. of Med., State Univ., Rijnsburgerweg 10, LEIDEN. Netherlands a Hormones and thyroid development. Gallus domesticus (Aves) THEVENET, Miss A. Dr. — Lab. dc Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France THIEBOLD, J. J. Dr.es Sci.. Prof. — Inst, de Zool. et d'Embryol. Exper., Fac. des Sci.. Univ. de Strasbourg. 12 Rue de I'Univcrsite, 67 STRASBOURG. France a Sexual differentiation. (Anamnia) b Hypophyso-thyroidal relations in the embryo. Galium domesticus (Aves) THIERY, M. M.D., Ph.D., Prof. — Dept. of Obstet. and Gynecol., Fac. of Med., Univ. of Ghent, Aan de Bocht 6, GHENT. Belgium a Intra-uterine hypoxia (determination of blood lactate/pyruvate balance and acid/base balance). Homo sapiens (Primates) b Longitudinal study of twins and correlation with genotype as determined by placental membrane morphology, placental zymograms and extensive bloodtyping. Homo sapiens (Primates) c Histochemistry of fallopian tube. Homo sapiens (Primates) d Histochemistry of placenta. Homo sapiens (Primates) e Enzyme histochemistry of female genital tract. (Mammalia) THILLARD, Miss M. J. Lie, Ing.Chim. — Lab. d'Anat. Comp., Fac. des Sci. d Orsay. Batiment 441, 91 ORSAY. France a Enzymatic histochemistry of pineal gland. Gallus domesticus (Aves) 172 THOMAS, D. B. B.Sc. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston. BIRMINGHAM 15, England a The development of the lympho-mycloid complex. (Mammalia) b The transplantation of foetal lympho-myeloid cell;;. (Mammalia) c The effects of irradiation on the developing lympho-myeloid tissues. (Mammalia) THOMAS, R. G. Ph.D.. Prof. — Dept. of Botany, Massey Univ. of Manawatu, PALMER- STON NORTH, New Zealand THOMAS, R. J. Ph.D. — Dept. of Anat., School of Med., Creighton Univ., OMAHA, Neb. 6S131. U.S.A. a Epiboly and cell differentiation (transmission and scanning electron microscopy and light optical techniques). Brachydanio rerio (Teleostei) THOMMES, R. C. Ph.D., Prof. — Dept. of Biol. Sci., De Paul Univ., 1036 Belden Ave., CHICAGO, 111. 60614, U.S.A. a Hypophysectomy effects upon "adrenal dependent" phenomena. Gallus domesticus (Aves) b Hormonal control of water balance. Gallus domesticus (Aves) c Hormonal control of yolk sac membrane metabolism. Gallus domesticus (Aves) THOMPSON, J. N. Ph.D. — Dept. of Poultry Sci., New York State Coll. of Agric. at Cornell Univ., ITHACA, N.Y. 14850, U.S.A. THOMPSON. Mrs. J. T. M.Sc. — Biochem. Dept., Med. School, Dalhousie Univ., Sir Charles Tupper Building, HALIFAX, N.S., Canada a Regulation of synthesis of hemoglobin and blood proteins in the embryo by transfer RNA. Gallus gallus (Aves) THOMPSON, R. P. Ph.D., Prof. — Dept. of Biol. Sci., State Univ. Coll. at Brockport, BROCKPORT, N.Y. 14420, U.S.A. a A study of the inhibitory effects of tissue extracts on homologous organ development (particularly the effect of whole eye extracts and extracts of eye components on the development of the lens in v i t r o). Ga//us domesticus (Aves) THOMPSON, T. E. Ph.D., D.Sc. — Dept. of Zool., Univ. of Bristol, BRISTOL BS8 lUG, England THORNTON, C. S. Ph.D., Prof. — Dept. of Zool., Michigan State Univ., EAST LAN- SING, Mich. 48823. U.S.A. • a Influence on regeneration of ingrowth of brachial nerves into aneurogenic fore limbs grafted orthotopically to normal hosts. Ambystoma maculatum (Urodela) b Recuperation of regeneration in nerve-dependent, formerly aneurogenic limbs after pro- longed denervation. Ambystoma maculatum (Urodela) c An immunobiclogical analysis of nerve influence in regeneration. Ambystoma spec. d An analysis of endocrine influence on regeneration. Ambystoma spec, Notophthalmus viridescens (Urodela), Xenopus spec. (Anura) THURMOND, W. Ph.D., Prof. — Biol. Sci. Dept., Calif. State Polytechnic Coll., SAN LUIS OBISPO. Calif. 93401, U.S.A. a Onset of melanophore-stimulating activity by the pars distalis and pars intermedia. Am- bystoma tigrinum, Hyla regilla (Amphibia) h Development of ACTH production in the adenohypophysis. (Amphibia) TIBA, T. Dr.Vet.Med. — Dept. of Vet. Obstet., Fac. of Vet. Med., Hokkaido Univ., N 18, W 9, SAPPORO, (060) Japan a Kinetics of spermatogenesis, especially with regard to the establishment of the wave pattern of the seminiferous epithelium. Mustela vison (Carnivora) h Histological investigations on the diurnal cycles of spermatogenesis. 1. Spermiation. 2. Meiotic activity. Mus musculus (Rodentia) TIBBITTS, F. D. Ph.D., Prof. — Dept. of Biol., Univ. of Nevada, RENO, Nevada 89507, U.S.A. a A study of placentation, specifically the histochemistry and ultrastructure of the placenta throughout development. (Rodentia) TIBERI (MARQUIS), Mrs. J. Lic.es Sci. — Lab. d'Anat. et d'Histol. Comp.. 7 quai St. Bernard, 75 PARIS Ve, France TICKLE, Miss C. A. B.A. — Dept. of Cell Biol., Univ. of Glasgow, GLASGOW W.2, Scotland, U.K. a Cellular interactions using radioactively labelled cells. Gallus gallus (Aves) TIEDEMANN, H. Dr.med., Dr.rer.nat., Prof. — Inst, fiir Physiol. Chemie, Med. Fak., Freie Univ. Beriin, Arnimallee 22, 1 BERLIN 33, W.Germany • a Morphogenetic factors, characterization and mechanism of action. (Vertebrata) (in col- laboration with Mrs. H. TIEDEMANN (WAECHTER)) b RNA and protein metabolism in development. (Amphibia) TIEDEMANN (WAECHTER), Mrs. H. Dr.rer.nat. — Inst, fur Physiol. Chemie, Med. Fak., Freie Univ. Berhn, Arnimallee 22, 1 BERLIN 33, W.Germany a Morphogenetic factors, characterization and mechanism of action. (Vertebrata) (in collab- oration with H. TIEDEMANN) TIMASHKEVICH, Mrs. T. B. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of theU.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. 173 a Regeneration and cell division in the stomach. Rattus norvegicus, Mus musculus (Roden- fia) TIMMERMANS, Miss L. P. M. M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT, Netherlands a Cytochemistry and physiology of shell secretion. Limnaea stagnalis, Pomacea bridgesi diffusa (Gastropoda) b Germinal localization in eggs. Dentalium spec. (Scaphopoda) TITOVA, Mrs. I. I. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. TOERIEN, M. J. Ph.D. — Dept. of Anat., Univ. of Stellenbosch, STELLENBOSCH, S. Africa a Cranial development. Podiceps cristatus (Podicipitidae, Aves) h Morphological and experimental studies on cranial morphogenesis (by means of extir- pation procedures, heteroplastic and orthotopic transplants, the contributions and inter- relationship of the visceral, axial and capsular skeleton are studied). Ambystoma spec, Triturus spec. (Urodela), Xenopus spec. (Anura). Chelydra serpentina (Chelonia), Anas boschas, Spheniscus demerstts, Gallus domesticus (Aves), Oryctolagus cunicultis (Lago- morpha) TOIT, C A. du Ph.D., Prof. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLEN- BOSCH, S.Africa • TOIVONEN, S. I. Ph.D., M.D., Prof. — Lab. of Exper. Embryol., Dept. of Zool., Univ. of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland • a The specific action of heterogeneous inductors. Triturus spec. (Urodela) h The mechanism of primary induction. Triturus spec. (Urodela) (in collaboration with L. O. SAXfiN, Dept. of Pathol.) c Nucleic acid synthesis in induced ectoderm. Triturus spec. (Urodela) (in collaboration with P. J. KOHONEN) d Cell interaction. Triturus spec. (Urodela) TOKIN B. P. Dr.Biol.Sci., Prof. — Dept. of Embryol., Leningrad Univ., Mendeleevsky St. 5, LENINGRAD B-164, U.S.S.R. a Regeneration, asexual reproduction and somatic embryogenesis. Beroe cucumis, Bolinopsis infundibulum (Ctenophora), Pelmatohydra oligactis, Laomedea flexuosa and other spp. (Coelenterata) b Ontogenesis. (Protozoa) c Regeneration during ontogenesis. (Protozoa) TOKUNAGA, Miss C. Ph.D. — Dept. of Zool., Univ. of California, BERKELEY, Calif. 94720, U.S.A. a Developmental genetics of pattern formation. Drosophila melanogaster (Diptera) b Pleiotropic effect of genes. Drosophila melanogaster (Diptera) TOMITA, H. M.A. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan TOMODA, Y. D.Sc. — Div. of Zool., Natl. Sci. Museum, Ueno Park, Daito-ku, TOKYO, Japan TONDURY, G. Dr., Prof. — Anat. Inst, der Univ., Gloriastr., 19, 8006 ZURICH. Swit- zerland • TONEBY, M. I. FiLkand. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCK- HOLM, Sweden a Metabolism of tryptophane. (Echinodermata) TONGE. C. H. D.D.Sc, Prof. — Dept. of Oral Anat., The Dental School, Univ. of New- castle upon Tyne, Northumberland Rd., NEWCASTLE upon Tyne NEl 8TA, England a Tooth development and eruption b Effect of severe undernutrition on the development and growth of teeth and jaws (in- cluding rehabilitation). Sus scrofa (Artiodactyla) c Protein calory deficiency and rehabilitation relative to the development and growth of teeth and jaws. Sus scrofa (Artiodactyla) TONNEYCK (MULLER), Mrs. I. — Anat.-Embryol. Inst., Univ. of Amsterdam, Maurits- kade 61, AMSTERDAM-O., Netherlands a Experimental studies on the morphogenesis of the skull. Gallus domesticus (Aves) TORO, I. M.D., Prof. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDA- PEST IX, Hungary a Experimental and physiological embryology; teratogenesis. Pleurodeles waltlii, Ambystoma mexicanum (Urodela), Gallus domesticus, (Aves). Rattus rattus (Rodentia) TORO I.. Jr. M.D. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDA- PEST IX, Hungary a Developmental pathology and teratogenesis (electron microscopy). Rattus rattus (Roden- tia) TOROK, L. J. Ph.D. — Inst, of Histol. and Embryol., Med. Univ., Tuzolto u. 58, BUDA- PEST IX, Hungary a Regeneration and somatic embryogenesis with special reference to the morphogenetic role of the nervous system. Dugesia (:= Euplanaria) lugubris (Turbellaria) 174 b Regeneration, teratogenesis and tumour development. Dugesia (— Euplanaria) tigrina ( Turbellaria) c Nudeo-histone changes during morphogenetic processes of regeneration. Dugesia ( =: Euplanaria) lugubris (Turbellaria) d Nucleo-histone changes during embryonic development and regeneration. Triturus cristatus (Urodela), Xenopus laevis (Anura) TORRES (WINTENBERGER), Mrs. S. Dr.es Sci.Nat. — Station Centr. de Physiol. Anim., Inst. Natl, de la Rech. Agronom., C.N.R.Z.. 78 JOUY-en-JOSAS, France a Etude de la mortalite embryonnaire precoce; etude de revolution des oeufs aux premiers stades, dans les conditions normales et avec variation de I'equilibre endocrinien de la mere. Ovis acies (Artiodactyla) b Etude de la mortalite embryonnaire. Sus scrota (Artiodactyla) c Fertilization and development of superovulated eggs. Ovis aries (Artiodactyla) d Activite respiratoire des oeufs en liaison avec la mortalite embryonnaire. Ovis aries (Artiodactyla) e Etude de I'activite respiratoire des blastocystes ages de 5 jours. Oryctolagus cuniculus (Lagomorpha) TOTO, P. D. D.D.S., Prof. — Dept. of Oral Pathol., School of Dent., Loyola Univ., 1757 W.Harrison St., CHICAGO, 111. 60612, U.S.A. a Cytogenesis of myoblasts and myotubules in regenerating striated muscle (tracer studies). Rattus norvegicus (Rodentia) b Cytogenesis of plasma cells in subcutaneous tissues (tracer studies). Mus musculus (Ro- dentia) TOWERS, B. M.B., Ch.B. — Anat. School, Univ. of Cambridge, Downing St., CAM- BRIDGE CB2 3DY, England a Development of fetal lung and changes at birth (experimental). Rattus rattus (Rodentia), Ovis aries (Artiodactyla) b Structure and functions of fetal larynx (experimental). Rattus rattus (Rodentia), Ovis aries (Artiodactyla) TRAMPUSCH, H. A. L. Ph.D. — Dept. of Anat. and Embryol., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O., Netherlands • a Mechanics of the morphogenetic field during regeneration. Ambystoma mexicanum (Uro- dela) h Compatibility of xenoplastic blastemata, used for the study of regeneration. (Anura, Urodela) c Regeneration from extremities, situated in heterotopic positions. Xenopus laevis (Anura) d Differentiation and de-differentiation during regeneration. Ambystoma mexicanum (Uro- dela) (in collaboration with Mrs. A. E. HARREBOMlfiE) e Effect of X-rays on oogenesis and ovulation. Mas spec. (Rodentia) (in collaboration with P. SMIT) f Analysis of fracture-repair. Ambystoma mexicanum (Urodela) (in collaboration with H. J. PRINS) g Tracer studies in the course of regeneration. Ambystoma mexicanum (Urodela) TRASLER, Mrs. D. G. Ph.D. — Human Genet. Section, Dept. of Genet., McGill Univ., MONTREAL, Que., Canada TRAURIG, H. — Depts. of Microbiol, and Biochera., Med. C^enter, Univ. of Kentucky, LEXINGTON, Ky. 40506, U.S.A. a Analysis of the physico-chemical properties of DNA in differentiating cells. Triturus viri- descens (Urodela), Gallus domesticus (Aves), Mus musculus, Rattus rattus (Rodentia). Homo sapiens (Primates) (in collaboration with S. P. MODAK) TRELSTAD, R. L. M.D. — Developm. Biol. Lab., Massachusetts Gen. Hosp., BOSTON. Mass. 02114, U.S.A. a The ultrastructure of cell contacts during early stages of development. Gallus domesticus (Aves) h The analysis of mesenchymal tissue organization through evaluation of individual cartilage cell orientation in the axial and limb skeleton. Gallus domesticus (Aves), Mus musculus (Rodentia) c Changes in the intracellular position of the Golgi apparatus during epithelial-mesenchymal interactions in the corneal epithelium and limb bud ectoderm. Gallus domesticus. Anas platyrhynchos. Phasianus colchicus (Aves), Mus musculus (Rodentia) d Development of the fibrous architecture of the orthogonal collagen lamellae in the corneal stroma. Gallus domesticus (Aves) TRINKAUS, J. P. Ph.D., Prof. — Dept. of Biol, Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. • a Cell contacts, cell movements and mechanisms of morphogenetic movements with techni- ques of cell culture, cinemicrography, electron microscopy, cell dissociation and reag- gregation, electrophysiology and chemistry of the cell surface, and microsurgery. Pundulus heteroclitus (Teleostei), Xenopus laevis (Anura). Gallus domesticus (Aves) 175 b Differentiation of clones of connective tissue cells with techniques of cloning in cell culture, chemistry of collagen, elastin and mucopolysaccharides, cinemicrography of clonal be- havior. Gallus domesticus (Aves) TRIONE, E. J. Dr. — Dept. of Bot. and Plant Pathol., Oregon State Univ., CORVALLIS, Ore. 97331, U.S.A. a Biochemical mechanism of flowering. ( Angiospermae) h Biochemical mechanism of light-induced sporulation. (Fungi) TRIPLETT, E. L. Ph.D.. Prof. — Dept. of Biol. Sci., Univ. of CaUfomia, SANTA BAR- BARA, Calif. 93106. U.S.A. TRUMAN, D. E. S. Ph.D. — M.R.C. Epigenet. Research Group, Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd.. EDINBURGH, EH9 3JN, Scotland. U.K. a Immunochemical studies of lens development. Xenopus laevis (Anura), Gallus domesticus (Aves) (in collaboration with J. C. CAMPBELL and Mrs. R. M. CLAYTON) b Antigenic studies of lens regeneration. Xenopus laevis (Anura) (in collaboration with J. C. CAMPBELL) TRUSLOVE, Miss G. M. Ph.D. — Dept. of Genet., Univ. Coll. London, Gower St., LONDON W.C.I, England TSAFRIRI, A. M.Sc. — Dept. of Zool., Tel-Aviv Univ., 155 Herzl St., TEL- AVIV, Israel a Nucleic acid metabolism of ovum. Rattus norvegicus (Rodentia) TSCHUMI, P. A. Dr., Prof. — Div. of Exper. Embryol., Zool. Inst., Univ. Bern, Sahlistr. 8, 3000 BERN, Switzerland a Ectoderm-mesoderm relationship during early limb development. Xenopus laevis (Anura) h Limb regeneration in metamorphosed animals. Xenopus laevis (Anura) TSUKAHARA, J. M.Sc. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, Mie-ken, (517) Japan a Electron microscopical and biochemical studies of oogenesis. Hemicentrotus pulcherrimus, Mespilia globulus (Echinoidea) TUCHKOVA, Mrs. S. J. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., Vavilov St. 26, MOSCOW B-133, U.S.S.R. a Restoration of regeneration capacity of limbs after X-irradiation. Ambystoma mexicanum (Urodela) (in collaboration with L. V. POLEZHAEV and Miss N. A. TEPLITZ) TUCHMANN-DUPLESSIS, H. Prof. — Lab. d'Histol.-Embryol. A, 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)) c Influence des hormones sur le developpement foetal. Rattus spec. (Rodentia) d Influence des alcaloides du Rauwolfia, de la reserpine et de la deserpidine, sur le devel- oppement. Rattus spec. (Rodentia) (en collaboration avec Mrs. L. MERCIER (PAROT)) e Influence des neuroleptiques sur la fertilite et le developpement foetal. Rattus spec, Mus spec. (Rodentia), Oryctolagus cuniculus (Lagomorpha) f Diabete experimental et grossesse. (Mammalia) g Influence des antimitotiques sur la gestation. (Rodentia) (en collaboration avec Mrs. L. MERCIER (PAROT)) TUCKER, J. S. Ph.D. — Pacif. Marine Station, Univ. of the Pacific, DILLON BEACH, Calif. 94929, U.S.A. a Gametogenesis and spawning by gross observation, histological and histochemical methods. Chone mollis, Cirri/orm/a spirabrancha, Hemipodus borealis, Nephtys caecoides, Axiothella rubrocincta (Polychaeta), Phoronopsis viridis (Phoronida), Macoma secta, M. nasuto (Mollusca) TUFT, P. H. Ph.D. — Dept. of Zool., Univ. of Edinburgh, West Mains Rd., EDIN- BURGH 9, Scotland, U.K. • a Embryonic growth: cell number, mass, density, uptake and distribution of water. Xenopus laevis (Anura) b Effect of morphogenetic inhibitors, e.g. /8-mercapto-ethanol c Water relations in haploid embryos d The uptake of water by the blastocyst. (Mammalia) e The distribution of water in the implanted foetus. (Mammalia) TUMANISHVILI, G. D. Dr. — Dept. of Biophysics, Inst, of Exper. Morphol., Acad, of Sci. of the Georgian S.S.R., 51 St. Kamo. TBILISSI 2, U.S.S.R. a Participation of nuclear and cytoplasmic chemical factors in regulation of DNA synthesis studied in isolated nuclei. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) h Role of chemical intercellular interactions in regulation of the rate of cell multiplication and intercellular synthesis studied in cell cultures. (Vertebrata) TUNG, T. C. Dr., Prof. — Inst, of Zool., Acad. Sinica, PEKING, Haitien, People's Republ. of China • TURCHINI, J. P. D.M., D.Sc. Prof. — Lab. d'Histol.-Embryol., Fac. de Med., Bd. Winston Churchill, B.P. 38, 63 CLERMONT-FERRAND, France 176 a Cytology of neonatal liver; differentiation of intercellular junctions, characters of micro- bodies- histochemical differentiation. Miis musculus (Rodentia) (in collaboration with R. POURHADI and P. MALET) ^,„^ TWEEDELL. K. S. Ph.D., Prof. — Dept. of Biol., Univ. of Notre Dame, NOTRE DAME, Ind. 46556, U.S.A. a Oocyte development and incorporation of radioactive precursors. Pectinana gouldii {Foly- chaeta) b Inhibition of hydranth regeneration. Tubidaria crocea (Hydroidea) c Renal tumor induction by subcellular fractions in embryonic and larval stages. Rana pipiens (Anura) TYLER A t Ph.D., Prof. — Dept. of Developm. Biol., Div. of Biol., Calif. Inst, of Technol., PASADENA, Calif. 91109, U.S.A. ( dcccBscd ) TYLER, C. Ph.D., D.Sc, Prof. — Dept. of Physiol, and Biochem., The Univ., READING ROi 5AQ. England a Structure and properties of the egg shell. (Aves) TYNDALE-BISCOE, C. H. Ph.D. — Dept. of Zool., School of Gen. Studies, Australian Nat. Univ., P.O. Box 4, CANBERRA, A.C.T. 2600, Australia a Early development, including fine structure. Antechimis stuarti (Marsupialia) h Fine structure of the blastocyst. Macropus eugenii (Marsupialia), Oryctolagus cuniculus (Lagomorpha) c Factors involved in resumption of development by blastocysts in diapause. Macropus eugenii (Marsupialia) TYSZKIEWICZ, Mrs. K. M.Sc. — Zool. Dept., Jagiellonian Univ., ul.Krupnicza 50. KRAKOW, Poland a Embryogenesis of nervous system. Tefrodontophora bielanensis (Collembola) UBBELS, Miss G. A. Ph.D. — Hubrecht Lab. (Intemat. Embryol. Inst.), Uppsalalaan 1, Universiteitscentrum "De Uithof", UTRECHT, Netherlands a Origin and significance of cytochemical heterogeneity of cell populations in the devel- oping egg. Ambystoma mexicanum (Urodela). Xenopus laevis (Anura) b Histochemical and autoradiographical analysis of neural and mesodermal competence in the blastula/gastrula stage. Ambystoma mexicanum (Urodela) (in collaboration with P. D. NIEUWKOOP and P. Th. M. v. d. SAAG) c Cytochemical analysis of oogenesis and early development. Gryllus domesficus, Locusta migraforia (Orthoptera) UCHIDA, T. A. Dr.Agr. — Zool. Lab., Fac. of Agric, Kyushu Univ., FUKUOKA, Japan a Studies on reproduction and embryology. Pipistrellus abramus. Miniopterus schreibecsi (Chiropfera) UEMURA, I. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO, 158 Japan a Electron microscopic studies on the development of primary mesenchyme cells. Hemicen- trotus pulcherrimus (Echinoidea) UHER, J. M.D.. C.Sc. — Clin, of Obstet. and Gynecol., Postgrad. School of Med., nabr. K.Marxe 157, PRAHA-Podoh, Czechoslovakia ULBERG L C Ph.D. Prof. — Dept. of Anim. Sci., North Carolina State Univ., P.O. Box 5127,' RALEIGH. N.C. 27607, U.S.A. a Growth in vitro of very young embryos. Mus musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha), Ovis aries, Sus scrufa (Artiodacfyla) h Influence of stress (high temperature) on subsequent young embryo development. Mus musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha), Ovis aries, Sus scrofa (Artio- dactyla) c Altered viability of sperm as a cause for delayed embryo death. Mils musculus (Rodentia), Oryctolagus cuniculus (Lagomorpha), Ovis aries, Sus scrofa (Artiodactyla) ULLMANN, Miss S. L. Ph.D. — Dept. of Zool., The Univ., GLASGOW W.2, Scotland, U.K. a Autoradiography of ovarioles. Tenebrio molitor (Coleoptera) h Oogenesis in vitro. Tenebrio molitor (Coleoptera) ULRICH, E. Dipl.Phil.II. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kiinstlergasse 16, 8006 ZURICH, Switzerland a Cell heredity and determination in male and female genital discs (methods: transplantation and somatic crossing over). Drosophila melanogaster (Diptera) ULRICH, H. Dr.phil., Prof. — Dept. of Zool., Swiss Fed. Inst, of Technol., Universitatstr. 2, 8006 ZURICH, Switzerland a Action of X-rays on nucleus and cytoplasm of eggs and on embryonic stages. Drosophila melanogaster (Diptera) b Morphology, physiology and cytology of paedogenetic-bisexual reproduction cycle. Meter- opeza pygmaea (— Oligarces paradoxus), Miastor metraloas (Itonididae = Cecidomyiidae, Diptera) ^^^ UPPULURI, V. R. R. Dr. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. 177 a Temporal and spatial patterns of cell replication and nuclear degeneration during lens development and growth; computer analysis of mathematical models. Gallus domestictis (Aves) (in collaboration with S. P. MODAK) URBAN, P. Ph.D. — Dept. of Biol. Sci., Union College, SCHENECTADY, N.Y. 12308. U.S.A. a Fine structure of gametogenesis, fertilization and early development. Bryopsis hypnoides (Chlorophyceae) URBANI, E. Prof. — 1st. di Istol. ed Embriol., Univ. di Roma, Fac. di Sci., Citta Univer- sitaria, 00185 ROMA, Italy • a Cytochemical and autoradiographic investigations on oogenesis. Dytiscus marginalis (Coleopfera) URBANI (MISTRUZZI), Mrs. L. Prof.Inc. — 1st. di Istol. ed Embriol., Fac. di Sci., Univ. di Roma, Citta Universitaria, 00185 ROMA, Italy URSPRUNG, H. Ph.D., Prof. — Lab. for Developm. Biol., Swiss Federal Inst, of Technol., Sonneggstr., ZURICH, Switzerland • a Biochemical studies on differentiation. Drosophila nielanogaster (Diptera), Rana pipiens, Xenopus laevis (Artura), Mus musculus (Rodentia), Gallus domesticus (Aves) h Organization of imaginal discs. Drosophila melanogaster (Diptera) c Ultrastructure and enzymology of fertilization. Ascidia nigra (Tunicata) UYSAL, M. M.D. — Inst, of Histol. and Embryol., Med. Fac, Hacettepe Sci. Center, ANKARA, Turkey a Collagenogenesis in the umbilical cord. Homo sapiens (Primates) VAAGE, S. M.D. — Anat. Inst., Univ. of Oslo, Karl Johansgatan 47, OSLO, Norway VACEK, Z. MUDr., D.Sc, Prof. — Inst, of Embryol., Fac. of Med., Charles Univ., Alber- tov 4, PRAGUE 2, Czechoslovakia a Electron microscopy and histochemistry of the placenta (comparative studies on the sub- microscopic structure, enzyme histochemistry and transport mechanism). Homo sapiens (Primates), (Rodentia; Carnivora; Insectivora; Chiroptera) b Role of primitive streak and tail region in early differentiation of the body (submicro- scopic and cytochemical studies in normal and experimental conditions). Rana esculenta (Anura), Gallus domesticus (Aves), Mus ratfus (Rodentia) VAHS, W. Dr.phil., Prof. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN-Lindenthal, W. Germany a Quantitative cytochemistry of nucleic acids and proteins during induction and differen- tiation. (Teleostei; Urodela; Aves) h Phase specific gene activities in the different germ layers and in the eyecup-lens-system of the developing embryo, as revealed by quantitative cytochemical DNA determinations. Salmo irideus (Teleostei), (Urodela) c Biochemistry of early development including yolk utilization. (Teleostei; Amphibia) VAKAET, L. C. A. M.D., Prof. — Lab. of Anat. and Embryol., State Univ. Center, Groe- nenborgerlaan 171, ANTWERPEN, Belgium • a Early development. Gallus domesticus (Aves) h Fetal and neonatal endocrinology. Mus musculus albinus (Rodentia) VALDEZ de MORENO, Mrs. C. L. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de TUCUMAN, Argentina a Respiration studies on spermatozoa. Bu^o arenarum (Anura) VANABLE, J. W., Jr. Ph.D. — Dept. of Biol. Sci., Purdue Univ., LAFAYETTE, Ind. 47907, U.S.A. temporarily: Dept. of Biol., Yale Univ., Kline Biol. Tower, NEW HAVEN, Conn. 06520, U.S.A. a Thyroxin control of skin gland development: the origin of the gland rudiments; the control of the decision to produce mucous or granular secretion. Xenopus laevis (Anura) VAN ALTEN, P. J. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Illinois, 1853 W. Polk St., CHICAGO, 111. 60612, U.S.A. a Ontogeny of the immunological mechanism. Gallus domesticus (Aves) h Development of lymphocyte competence to respond to mitogens in vitro. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) VANDEBROEK, G. D.Sc, Prof. — Lab. d'Embryol., Inst, de Zool., Univ. de Louvain, 59 rue de Namur, LOUVAIN, Belgium • VANDERHAEGHE (HOUGARDY), Mrs. F. Dr.en Sci. — address unknown VAN DETH. J. H. M. G. M.D. — Dept. of Anat. and Histol., Univ. of Adelaide, ADE- LAIDE, S.Australia 5000, Australia a Teratogenesis by hormones. Gallus domesticus (Aves), Rattus norvegicus (Rodentia) h Hormonal influences on sex determination. Gallus domesticus (Aves) VAN GANSEN (RASMONT), Mrs. P. Agrege — Lab. de Morphol. Anim., Univ. libre de Bruxelles, 67, rue des Chevaux, RHODE-ST-GENESE, Brabant, Belgium a Descriptive and experimental morphology of nucleoli, ribosomes and glycogen during maturation, fertilization, segmentation and early gastrulation (electron microscope studies). Xenopus laevis (Anura) 178 VAN HORN (NEUMANN), Mrs. S. A. Ph.D.. Prof. — Dept. of Zool.-Entomol.. Montana State Univ., BOZEMAN, Montana 59715, U.S.A. a Maternal environmental inter-relationships with embryonic developmental rate. Aulocara elliotti (Orthoptera) b Embryonic neuroendocrine functions. Aulocara elliotti (Orthoptera) VANNINI. E. Dr., Prof. — Inst, of Zool., Fac. of Sci., Univ. of Bologna. Via S. Giacomo 9, 40126 BOLOGNA, Italy a Experimental analysis of the development of the gonad and Bidder's organ. Buto spec. (Anura) b Inhibition by antibiotics of testosterone-induced sex-reversal in tadpoles. Rana dalmatina (Anura) c General study of the problem of the "sex gradient" in various hermaphrodite animals. (Hydroidea; Tricladidea, Turbellaria; Serpulidae, Polychaeta) VAN STONE. J. M. Ph.D., Prof. — Dept. of Biol., Trinity Coll., HARTFORD. Conn. 06106, U.S.A. a The influence of thyroxine upon the regenerative capacity of the tadpole hindlimb. Rana sylvatica (Anura) VAN VALEN, Mrs. Ph. — Dept. of Biol. Sci., Univ. of Illinois at Chicago Circle, Box 4348, CHICAGO, 111. 60680, U.S.A. VANZULLI, Mrs. A. B.Sc. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de Clinicas, MONTEVIDEO, Uruguay a Sensory evoked potentials in the fetus. Homo sapiens (Primates) VARMA, H. C. Ph.D., Prof. — Dept. of Anat., Motilal Nehru Med. Coll., ALLAHABAD- 1, India a Structure and composition of the amnion, including its histochemistry and ultrastructure. Rattus norvegicus (Rodentia), Lepus cuniculus (Lagomorpha) h Mechanism of transport of substances across the chorio-amnion. Rattus norvegicus (Rodentia), Lepus cuniculus (Lagomorpha) c Role of endometrium and extraplacental membranes in feto-matemal exchange processes. Homo sapiens (Primates) (in collaboration with Miss R. BAJEVA) d Histochemical and cytochemical studies of the decidua parietalis and capsularis. Homo sapiens (Primates) e Blood vessels of fetal placenta in cases of toxemias of pregnancy, congenital malformations and multiple births. Homo sapiens (Primates) VARMA, R. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLAHABAD-2, India a Quantitative studies of various metabolites in eggs, e.g. nitrogenous compounds, phos- phorus compounds, reducing substances and citric acid. Philosamia ricini ( Lepidoptera) , Musca domestica. Sarcophaga ruficocnis (Diptera) (in collaboration with Mrs. R. PANT and D. M. LAL) b Variation in the activity of some enzymes in eggs. Philosamia ricini (Lepidoptera). Musca domestica, Sarcophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT and D. M. LAL) c Quantitative studies of various metabolites during metamorphosis. Philosamia ricini (Lepi- doptera), Musca nebulo. Sarcophaga ruficornis (Diptera) (in collaboration with Mrs. R. PANT, D. M. LAL and Miss I. D. MORRIS) d Quantitative studies of certain metabolites and enzymic studies on the fat body during larval and pupal development. Philosamia ricini (Lepidoptera) (in collaboration with Mrs. R. PANT, Miss I. D. MORRIS and D. M. LAL) VARMA, Miss S. K. M.Sc. — Dept. of Zool., Univ. of Udaipur, UDAIPUR, Rajasthan, India VARON, S. S. M.D.. Prof. — Dept. of Biol.. Univ. of CaUfomia. San Diego, P.O. Box 109, LA JOLLA. Calif. 92037. U.S.A. a In vitro differentiation of nerve tissue VASSE, J. Lic.es Sci. — Serv. d'Embryol. Exper. de I'lnst. Pasteur, 20 rue des Moulins, 95 SANNOIS, France a Researches on the relationship between the somites and the primordia of the forelimbs. Anguis fragilis (Lacertilia) h Research on RNA and DNA synthesis of epidermal and mesodermal cells in the limb buds. Anguis fragilis, Lacerta viridis (Lacertilia) (in collaboration with A. RAYNAUD) VASSETZKY, S. G. Cand.Biol.Sci — Inst, of Develop. Biol.. Acad, of Sci. of the U.S.S.R.. Vavilov St. 26. MOSCOW B-133, U.S.S.R. a Dynamics of meiosis and mitosis in eggs. Os^rea gigas (Lamellibranchia), Strong ylocentro- tus drobachiensis, S. intermedius (Echinoidea) h Production of diploid gynogenesis by means of heat treatment of oocytes at the first maturation division and of chemical treatment (with nitrogen mustard) of sperm. Acipenser gilldenstadti, A. stellatus (Chondrostei) VAUGHN, J. E. Ph.D. — Dept. of Anat.. School of Med.. Boston Univ.. 80 E. Concord St., BOSTON. Mass. 02118, U.S.A. 179 a Electron microscopic study of the formation of myelin sheaths and development of neuro- glial cells in the central nervous system. Rattus domesticus (Rodentia) b Electron microscopic study of spinal cord development. Rattiis domesticus (Rodentia) VENEZIANO, P. P. Ph.D. — Dept. of Biol., Wilbur Wright Coll., 3400 N.Austin Ave., CHICAGO, 111. 60634, U.S.A. a The effect of artificial sweetners on growth and development. Gallus domesticus (Aves) b The effect of antipituitary sera on development. Gallus domesticus (Aves) c The effect of low intensity magnetic fields on the developing nervous system of 24, 36, and 48 hour blastoderms. Gallus domesticus (Aves) VENZKE, W. G. Ph.D., Prof. — Dept. of Vet. Anat., Coll. of Vet. Med., Ohio State Univ., 1900 Coffey Rd., COLUMBUS, Ohio 43210, U.S.A. a Morphogenesis and physiology of pineal gland. (Aves) h Morphogenesis and physiology of blood. (Aves) c Experimental morphology of pineal gland. (Bovidae, Mammalia) VERBICKY, M. Sh. Cand.med.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. VERDONK, N. H. Ph.D. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT, Netherlands a Cell-lineage and head-pattern in normal and Li-treated embryos. Limnaea stagnalis (Gas- tropoda) h Cell-lineage and head pattern in heat-shock treated embryos. Limnaea stagnalis (Gastro- poda) c Determination of bilateral symmetry in the head region. Limnaea stagnalis (Gastropoda) d Germinal localization in eggs. Dentalium spec. (Scaphopoda); Patella spec. (Gastropoda) VEREISKAYA, Miss V. N. Cand.biol.sci. — Lab. of Developm. Cytogenet., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. VERHOFSTAD, A. A. J. Med.Drs. — Dept. of Anat. and Embryol., Med. Fac, Univ. of Nijmegen, Geert Grooteplein Noord 21, NIJMEGEN, Netherlands a Differentiation of epinephrine- and nor-epinephrine-containing cells in the adrenal me- dulla, studied by histochemical methods. Mus rattus (Rodentia) VERNET, G. Dr.Biol. — Lab. de Biol. Cell., Fac. des Sci., B.P. 347, 51- REIMS, France a Synthesis of porphyrins during development. Lineus viridis (Nemertea) h Synthesis of porphyrins during anterior regeneration. Lineus ruber, L. lacteus (Nemertea) c Fine structure of photoreceptors during anterior regeneration. Lineus ruber (Anopla, Nemertini) VERNET (CORNUBERT). Mrs. G. Dr.es Sci., Prof. — Lab. de Physiol, des Invertebres, Fac. des Sci., Place E. Bataillon, 34-MONTPELLIER, France a Regeneration of nervous and neurosecretory cells of the eye stalk. Pachygrapsus mar- moratus (Decapoda, Crustacea) h Sinus gland regeneration. Pachygrapsus marmoratus (Decapoda, Crustacea) VERNON, G. A. Dr. — Dept. of Chem., Univ. Coll. London, Gower St., LONDON W.C.I. England VERWOERD, C. D. A. M.D. — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O.. Netherlands a Effects of X-rays on growth and regeneration. Ambystoma mexicanum (Urodela) h Differentiation of germ layers. (Mammalia) (in collaboration with C. G. van OOS- TROM) c Development of the pelvic floor in the embryo. Homo sapiens (Primates) d Development of branchial structures in embryos. Mus spec. (Rodentia) VIANEY-LIAUD, M. D.E.A. — Lab. d'Evolut., Fac. des Sci. de Paris, 105 Bd. Raspail, 75 PARIS 6, France a Controle des gametogeneses. Australorbis glabratus (Pulmonata, Gastropoda) VICKER, M. G. B.Sc. — Dept. of Cell Biol.. Univ. of Glasgow, GLASGOW W.2, Scot- land, U.K. a The effect on cell interactions of treatments that chemically modify the outer surface of dissociated embryonic cells. Gallus domesticus (Aves) VILIMKOVA (HABROVA), Mrs. V. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7. PRAHA 2, Czechoslovakia a Nucleic acids and subcellular particles in oogenesis and early development. (Amphibia) (in collaboration with J. NEDVIDEK) VILLA, Miss L. D.Sc. — 1st. di Zool., Univ. di Palermo, Via Archirafi 18, 90123 PALER- MO, Italy a Ultrastructural morphology of oocytes. Chaetopterus (Polychaeta, Annelida) h Electron microscope studies on egg development. Sternaspis spec. (Polychaeta, Annelida) VINCENT, W. S. Ph.D., Prof. — Dept. of Anat. and Cell Biol., School of Med., Univ. of Pittsburgh. PITTSBURGH, Pa. 15213. U.S.A. • a Control of ribosome formation in early oocytes; nucleolar chemistry of oocytes. Asterias forbesii, Arbacia punctulata (Echinodermata) 180 b Analysis of ribosomal gene amplification in oocyte development with respect to uni- and multinucleolate forms. Asterias torbesii (Asteroidea), Arbacia punctulata (Echinoidea) . Roccus saxatilis, Fundulus hetecoclitus (Teleosfei) VISCUSO. Miss R. Dr. — 1st. di Zool., Univ. di Catania, Via Androne 81, 95124 CATANIA. Italy , _ a Physiological and experimental embryology of the earliest developmental stages. t,ypre- pocnemis plorans (Orthoptera) oT^Trr r cm VISSER. M. H. C. M.Sc. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STbLLbM- BOSCH, S.Africa a General ontogeny. Gonaxis givandaensis (Streptaxidae, Pulmonata) VITTORELLI, Miss M. L. Dr.Biol.Sci. — 1st. di Anat. Comp., Univ. di Palermo, Via Archirafi 20, 90123 PALERMO, Italy (no embryological work in progress) VIVIEN, J. H. Dr.es Sci., Prof. — Lab. de Zool. et d'Embryol. Exper., Univ. de Strasbourg 12 rue de I'Universite, STRASBOURG, France VOGE Mrs M Ph D , Prof. — Dept. of Med. Microbiol, and Immunol., School of Med., Univ. of California, LOS ANGELES, Calif. 90024, U.S.A. a Asexual reproduction; development of larval stages. Hymenolepis. Mesocestoides (Cestoda) h Growth requirements in vitro. (Cestoda) VOLKOVA Miss L. S. Dr.Med.Sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. a Peculiarities of the development of foetuses and isoserological characteristics of multiple births. Homo sapiens (Primates) h Experiments with new methods of immunoprophylaxis of hemolytic disease in newborns: 1) use of phenomena of immunological tolerance. 2) transamnion blockage of immune antibodies of maternal blood. Rattus nocvegicus (Rodentia). Papio hamadryas (Primates) VOLLRATH, L. Priv.Doz., Dr.med. — Anat. Inst, der Univ., Koellikerstr. 6, 87 WuRZ- BURG, W.Germany a Development of the small intestine under normal and experimental conditions (histology, histochemistry, electron microscopy; absorption of fat, carbohydrates and protein in the fetal bowel; enzyme induction). Rattes norvegicus (Rodentia) VOLPE, E. P. Ph.D., Prof. — Dept. of Biol., Tulane Univ., NEW ORLEANS. La. 70118, U.S.A. ^ , a Neural crest homotransplantation and its relation to the phenomena of immunity and tolerance. Rana pipiens (Anura) h Blood cell chimerism in parabiotic animals, as revealed in chromosome preparations of cultured leucocytes. Rana pipiens (Anura) c Histocompatibility studies in animals produced by nuclear transplantation. Rana pipiens (Anura) (in collaboration with R. G. McKINNELL) VYAZOV, O E. Dr.med. sci.. Prof. — Dept. of Exper. Embryol., Inst, of Exper. Biol., Acad, of Med. Sci of the U.S.S.R., Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. • WADA, K. M.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA, 812 Japan a Regulation of ribosomal RNA synthesis during embryonic development. Xenopus laevis WADA, S. Dr.rer.nat. — Zool. Inst., Univ. Dusseldorf, Mettmannerstr. 16-18, 4'DUSSEL- DORF, W.Germany .^. , , ,.. WADDINGTON, C. H. D.Sc, Prof. — Inst, of Anim. Genet., Univ. of Edinburgh, West Mains Rd., EDINBURGH EH9 3JN, Scotland. U.K. • a Study of certain features of developing embryos by electron microscopy. (Diptera; Am- phibia) (in collaboration with J. JACOB and Miss M. M. PERRY) b Development of imaginal buds. Drosophila spec. (Diptera) (in collaboration with Mrs. E. ROBERTSON (PATON)) ^ ^ ^ , i c Ultrastructural changes during growth. Micrasterias thomasiana ( Desmidoidea, Conjugates) (in collaboration with Miss M. M. PERRY) d Electron microscope studies of mutants. Drosophila spec. (Diptera) (in collaboration with Miss M. M. PERRY) ^^,wcv e Computer simulation of biological patterns, (in collaboration with R. COWE) WADLEY G W. B.S. — Lab. of Radiat. Ecol., Coll. of Fish., Univ. of Washington, 108 Fisheries Center, SEATTLE, Wash. 98105, U.S.A. a Effects of ionizing irradiation on different stages of embryos developing at different temp- eratures. Oncorhynchus tshawytscha, Salmo gairdnerii (Teleostei) WAELSCH, Mrs. S. GLUECKSOHN Ph.D., Prof. — Dept. of Genet., Albert Einstein Coll. of Med., Yeshiva Univ., Eastchester Rd. 6 Morris Park Ave., NEW YORK, Bronx, N.Y. 10461. U.S.A. • a Developmental physiology. Mus musculus (Rodentia) h Developmental genetics. Mus musculus (Rodentia) c Developmental pathology. Mus musculus (Rodentia) WAIDYASEKERA, P. L. D. Ph.D. — Dept. of Biol. Sci., Fac. of Sci.. Vidyodaya Univ.. Gangodawila. NUGEGODA, Ceylon 181 a Morphogenetic changes due to various bacterial types used as food during the subcultures. Acanthamoeba spec. (Amoebina) b Changes in growth and development in different culture media. Astasia spec. (Eugleno- phyceae) WAINWRIGHT, Mrs. L. K. Ph.D.. Prof. — Biochem. Dept.. Med. School, Dalhousie Univ., Sir Charles Tupper Building, HALIFAX, N.S., Canada a Kinetics of synthesis of embryonic and fetal hemoglobin in the blood islands of blastodiscs between the primitive streak and 12-somite stages. Gallus gallus (Aves) h Attempted tissue culture of the erythropoietic tissue of the young blastodisc. Gallus gallus (Aves) WAINWRIGHT, S. D. Ph.D., Prof. — Biochem. Dept., Med. School. Dalhousie Univ., Sir Charles Tupper Building, HALIFAX. N.S., Canada a Kinetics of synthesis of embryonic and fetal hemoglobins in the blood islands of blastodiscs between the primitive streak and 12-somite stages. Gallus gallus (Aves) b Regulation of synthesis of hemoglobin and blood proteins in the embryo by transfer RNA. Gallus gallus (Aves) WAL, U. P. van der M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, UTRECHT, Netherlands a Localization of protein synthesis during the first cleavages by electron microscope auto- radiography. Lymnaea stagnalis (Gastropoda) WALASH, M. N. B,Sc. — Dept. of Zool., Fac. of Sci., Ain Shams Univ., Abassia, CAIRO, Egypt, U.A.R. WALKER, B. E. M.D.. Ph.D.. Prof. — Dept. of Anat., Michigan State Univ., EAST LANSING, Mich. 48823, U.S.A. a Teratology, experiments on cleft palate, the action of different chemicals. Oryctolagus cuniculus (Lagomorpha), Mus musculus (Rodentia) WALKER, D. G. Ph.D.. D.Sc. — Dept. of Biochem., Univ. of Birmingham. Edgbaston, BIRMINGHAM 15, England a The development of enzymes and enzyme systems in foetal and neonatal animals, with special reference to carbohydrate metabolism. (Mammalia) b Carbohydrate metabolism of the placenta. (Mammalia) WALLACE, H. Ph.D. — Dept. of Biol., Amherst Coll., AMHERST, Mass. 01007, U.S.A. WALLACE, R. A. Ph.D. — Biol. Div., Oak Ridge Natl. Lab., P.O. Box Y. OAK RIDGE, Tenn. 37830. U.S.A. • a Comparative biochemistry of yolk protein synthesis, transport and composition. (Crus- tacea; Pisces; Amphibia; Aves) WARD. R. J. Ph.D. — Pharm. Res. Labs., Reckitt & Sons Ltd., Dansom Lane, HULL, E.Yorks., England a The teratogenic effects of drugs; testing of drugs for foetal toxicity. (Mammalia) WARKANY, J. M.D.. Prof. — Children's Hosp. Research Found., Div. of Teratol., Elland and Bethesda Aves., CINCINNATI. Ohio 45229. U.S.A. WARNER. E. D. Ph.D.. Prof. — Dept. of Zool.. Univ. of Wisconsin. MILWAUKEE. Wis. 53201. U.S.A. WARTENBERG. H. Dr.raed.. Prof. — Anat. Inst, der Univ.. Univ.-Krankenhaus, Martini- str. 52, 2 HAMBURG 20, W.Germany a Electron microscopic studies on developmental stages of gonads including male and female germ cells. Homo sapiens (Primates) b Fine structure of postnatal development of circumventricular organs (area postrema, sub- fornical organ, pineal organ) of the brain. Felis domestica (Carnivora), Macaca mulatta (Primates) WARTIOVAARA. J. J. M.D. — Lab. of Exper. Embryol. Ill Dept. of Pathol., Univ. of Helsinki. Haartmaninkatu 3. HELSINKI 25. Finland a RNA synthesis during development. Strong ylocentrotus purpuratus (Echinoidea) (in col- laboration with F. H. WILT, Berkeley. Calif.) b Electron microscopy of cytodifferentiation during kidney tubulogenesis in vitro. Mus musculus (Rodentia) (in collaboration with L. O. SAXEN) c Effect of tetracycline on osteogenesis in vitro. Mus musculus (Rodentia) WATANABE. H. Ph.D. — Inst, of Zool.. Fac. of Sci.. Tokyo Kyoiku Univ., Otsuka 3-29-1. Bunkyo-ku, TOKYO, Japan a Recognition of specificity in compound forms. Botcyllus primigenus, Bofrylloides violaceum (Ascidia) (in collaboration with K. TANAKA) b Asexual reproduction of compound forms. Pecophora japonica, Polycitor mutabilis, Botcyl' lus primigenus (Ascidia) WATANABE. K. Ph.D. — Dept. of Anat.. Fac. of Med., Tokyo Med. and Dental Univ., 1-5-47, Yushima, Bunkyo-ku, TOKYO, 113 Japan a Fibrillogenesis of connective tissue fibres. Rana cafesbeiana, R. japonica. Bufo vulgaris (Anura), Mus musculus (Rodentia), Homo sapiens (Primates) b Electron microscopic studies on metamorphosis. Rana japonica, R. catesbeiana, Bufo vul- garis (Anura) 182 WATANABE. K. M.Sc. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of Kyoto. KYOTO, Japan WATANABfi, T. Dr. — Dept. of Biol., Fac. of Sci., Konan Univ., Okamoto, Motoyama- cho, Higashi-nada-ku, KOBE, Japan a Change of ultrastructure during differentiation of embryonic cells. (Amphibia) WATERMAN, Allyn J. Ph.D. — Extramural Programs, Natl. Inst, of Child Health and Human Developm.. Natl. Inst, of Health, BETHESDA. Md. 20014. U.S.A. • a Development of structure and function of the thyroid, hypophysis and neuro-secretory system, (higher Vertebrata) b Function of the thyroid gland. Eptatretus stouti (Myxinoidea, Cyclostomata) c Limb regeneration and prolactin. Diemyctylus viridescens (ilrodela) WATTERSON. R. L. Ph.D., Prof. — Dept. of Zool, Univ. of Illinois. URBANA. 111. 61S01, U.S.A. • a Effects of hypophysectomy on development of musculus complexus and long bones. Gallus domesficus. Anas boschas (Aves) b Correction of defects in pituitaryless embryos with anterior pituitary grafts and injections of trophic hormones. Gallus domesficus. Anas boschas (Aves) c Sources and mechanisms of development of lumbosacral level of neural tube with emphasis on development of myeloschisis. Gallus domesficus (Aves) d Effects of aminoguanidine sulfate on development of liver, mesonephros. metanephros and heart. Gallus domesficus (Aves) WATTS, G. T. Ch.M., F.R.C.S. — Dept. of Surg.. Queen Elizabeth Hosp.. Edgbaston, BIRMINGHAM 15, England a Origin of cells in healing wounds, b Relation of regeneration to reactions of immunity. c Nature of wound healing in relation to components involved and responsible (mucopoly- saccharides and collagen), d Manganese in relation to wound healing. WAYMOUTH, Miss C. Ph.D. — The Jackson Lab.. BAR HARBOR. Me. 04609. U.S.A. a Development of Na-K activated ATPase in kidney and lung, in vivo and in vitro. Mus musculus (Rodenfia) WEAKLY (SHAW), Mrs. B. Ph.D. — Dept. of Anat.. Univ. of Dundee, DUNDEE DDl 4HN, Scotland, U.K. a Cytochemical and autoradiographic investigations of developing germ cells on the electron microscopic level. Mesocricefus aurafus (Rodenfia) WEBER, R. Ph.D., Prof. — Div. of Cell Biol, and Chem. Embryol., Zool. Inst., Univ. of Bern, Sahlistr. 8. CH-3000 BERN, Switzerland • a Mechanism of tissue involution during metamorphosis. Xenopus laevis (Anura) (in collab- oration with J.-C. PERNARD) b Effects of thyroxine on isolated tadpole tails. Xenopus laevis (Anura) (in collaboration with Miss E. D. HICKEY) c Thyroxine and RNA synthesis in tadpole tissues. Xenopus laevis (Anura) (in collaboration with H. STADLER) d Comparative biochemistry and ultrastructure of mitochondria in embryonic systems, (in collaboration with A. KISTLER) e Developmental significance of cytoplasmic DNA. Xenopus laevis (Anura) (in collaboration with P. WELLAUER) WEBER, W. Dr.rer.nat. — Inst, fur vergl. Tierphysiol. Univ., Weyertal 119. 5 KGLN- Lindenthal, W.Germany (no embryological work in progress) WEBSTER, G. C. Ph.D. — School of Biol. Sci., Univ. of Sussex, Falmer, BRIGHTON, Sussex, England a Regeneration, regulation and pattern formation. Hydra spec. (Hydroidea) WECHSLER, W. Dr.med. — Max-Planck Inst, fur Hirnforsch., Abt. fiir allgem. Neurol.. Ostmerheimerstr. 200, 5 KOLN-Merheim, W.Germany W^GLARSKA. Miss B. D.Sc. — Zool. Dept.. Jagiellonian Univ.. ul.Krupnicza 50, KRA- KOW, Poland a Histochemical studies on development. Melasoma populi (Coleopfera) WEGMANN, R. Dr.en Med., Dr.es Sci., Prof. — Inst. d'Histochim. Med., Fac. de Med. de Paris, 45 rue des Sts. Peres, PARIS Vie, France a Enzymology and metabolic pathways of morphogenesis WEHRMAKER, A. H. Dr.rer.nat. — Dept. of Biol., Fac. of Arts and Sci., Dalhousie Univ., HALIFAX. N.S., Canada WEIDELI, H. J. Dipl.Phil.II — Zool.-Vergl. Anat. Inst.. Univ. Ziirich. Kiinstlergasse 16, CH-8006 ZURICH, Switzerland a Nucleic acids of various mutants. Drosophila melanogasfer (Dipfeca) WEIDMAN, Th. A. Ph.D. — Dept. of Anat, Louisiana State Univ., 1542 Tulane Ave.. NEW ORLEANS. La. 70112, U.S.A. 183 a Ultrastructure of developing retina and correlation with function as indicated by electro- retinography. Rana spec. (Anura), Gallus domesticus (Aves), Rattus domesticus, Citellus spec. (Rodentia) b Ultrastructure of ocular structures other than retina and correlation with functional awakening. Rana spec. (Anura), Gallus domesticus (Aves), Rattus norvegicus, Citellus spec. (Rodentia) c Ultrastructural aspects of neuro-ophthalmic development; formation of optic nerve, chiasm, lateral geniculate bodies, optic radiations and occipital cortex (where appropriate). Rana spec. (Anura), Gallus domesticus (Aves), Rattus norvegicus, Citellus spec. (Rodentia) WEIRICH, G. Dr.rer.nat. — Physiol.-Chem. Inst., Fac. of Med., Phihpps Univ., 355 MAR- BURG/Lahnberge, W.Germany a The role of chromosomes in the regulation of developmental processes (elaboration of an in vitro system for polytene chromosomes). Calliphoca erythrocephala, Rhynchosciara angelae (Diptera) WEISHEIT (SCHULTZ), Mrs. P. Ph.D., Prof. — Biol. Dept., Univ. of Colorado, Denver Center, 1100 E. Hth St., DENVER, Colo. 80202, U.S.A. a Effect of teratological and other deleterious compounds upon the maintenance of preg- nancy with especial reference to cytocheraical and ultrastructural changes in placental cells, Mus norvegicus albinus (Rodentia) h A comparative cytochemical study of the autophagic area of the developing yolk sac placental cells. Aplondontia rufa, Erethizon epixanthum (Rodentia) WEISS, L. M.D.. Ph.D. — Dept. of Exper. Pathol., Roswell Park Mem. Inst., 666 Elm St., BUFFALO, N.Y. 14203, U.S.A. • WEISS P. A. Ph.D., Sc.D., Prof. (Emer.) — Lab. of Developm. Biol., Rockefeller Univ., NEW YORK, N.Y. 10021, U.S.A. • (no embryological work in progress) WEISS, R. A. B.Sc. — Dept. of Anat. and Embryol., Univ. Coll., Cower St., LONDON W.C.I, England a Teratoma cells in vitro. (Mammalia) WEISZ, P. B. Ph.D. — Dept. of Biol., Brown Univ., PROVIDENCE. R.I. 02912, U.S.A. WELANDER, A. D. Ph.D., Prof. — Lab. of Radiat. Ecol., Coll. of Fish., Univ. of Washing- ton. 108 Fisheries Center, SEATTLE, Wash. 98105. U.S.A. a Effects of graded sublethal doses of X-rays on several different stages of the embryo. Oncorhynchus kisutch, O. tshawytscha, Salmo gairdnerii (Teleostei) h Experimental embryology. Salmo gairdnerii, Oncorhynchus kisutch, O. tshawytscha (Tel' eostei) c Effects of low, acute doses of X-rays on early development. Oncorhynchus spec, Salmo spec. (Teleostei) d Effects of ionizing irradiation on different .stages of embryos developing at different temperatures. Oncorhynchus tshawytscha, Salmo gairdnerii (Teleostei) WELLAUER, P. — Div. of Cell Biol, and Chem. Embryol., Zool. Inst., Univ. of Bern, Sahlistr. 8, CH-3000 BERN, Switzerland a Developmental significance of cytoplasmic DNA. Xenopus laevis (Anura) (in collab- oration with R. WEBER) WELLS L. J. Ph.D., Prof. — Dept. of Anat.. School of Med., Univ. of Minnesota, MIN- NEAPOLIS. Minn. 55455, U.S.A. • WENDER, M. B. M.D., Prof. — Dept. of Neurol., Med. Acad., Przybyszewskiego St. 49, POZNA5J, Poland a The chemical composition and enzyme activity of developing nen,'ous tissue, with special reference to the period of myelination. b The influence of ionizing radiation on the developing nervous system. c The influence of asphyxia on the developing nervous system. d Histoenzymatic architectonics of the developing nervous system. WENGER, B. S. Ph.D., Prof. — Dept. of Anat., Univ. of Saskatchewan, SASKATOON, Sask., Canada a Glucose-6-phosphate dehydrogenase activity in the spinal and sympathetic ganglia of the embryo. Gallus domesticus (Aves) b Nucleotides in the central nervous system and surrounding structures including sensory and sympathetic ganglia. Gallus domesticus (Aves) c Study of the appearance of specific brain antigens during development using the micro- complement fixation technique. Gallus domesticus (Aves) d Morphological and biochemical analysis of the mode of action of the crooked neck dwarf gene. Gallus domesticus (Aves) WENGER, Mrs. E. L. Ph.D. — Dept. of Anat., Univ. of Saskatchewan, SASKATOON. Sask., Canada a Glucose-6-phosphate dehydrogenase activity in the spinal and sympathetic ganglia of the embryo. Gallus domesticus (Aves) b Nucleotides in the developing ganglia. Gallus domesticus (Aves) c Development and differentiation of the optic tectum and optic nuclei after early surgical removal of portions of the optic cup. Gallus domesticus (Aves) 184 WENIGER. ].-P. Dr.es Sci. — Lab. de Zool. et d'Embryol. Expcr., Univ. de Strasbourg, 12 rue dc ILIniversite, STRASBOURG. France WENSING, C. J. G. D.V.M., Ph.D. — Vet. Anat. and Embryol. Inst.. State Univ. of Utrecht. Bekkerstr. HI, UTRECHT. Netherlands a Mechanism of testicular descent (histology, biochemistry and tissue culture). (Mammalia) WENT, D. — Dept. of Zool.. Swiss Federal Inst, of Technol.. Universitatstr. 2. 8006 ZU- RICH, Switzerland a In vivo and in vitro embryology of paedogenetic reproduction. Heteropeza pyg- maea (— Oligarces paradoxus) (Itonididae — Cecidomyiidae, Diptera) WERNER, Y. L. Ph.D. — Dept. of Zool.. Hebrew Univ. of Jerusalem, JERUSALEM, Israel a Normal development, embryonic and postnatal, of the vertebral column. (Gekkonoidea, Lacertilia) b Tail regeneration, especially skeleton and skin; bifurcate tails. (Lacertilia) c Temperature effects during embryogenesis on the number of vertebrae. Hemidactylus turcicus, Stenodactylus stenodactylus (Gekkonoidea, Lacertilia) WERZ, G. Dr.phil. — Max-Planck-Inst. fur Zellbiol., Anton-Dohrn-Weg, Postfach 1009, D 294 WILHELMSHAVEN, W.Germany a Nucleo-cytoplasmic interactions, b Mechanism of cell wall differentiation. c Genesis of endoplasmic membrane systems, d Morphogenesis of cell constituents. e Conformational changes of polypeptides and their relationship to morphogenesis. WESSELLS N. K. Dr. — Dept. of Biol. Sci., Stanford Univ., STANFORD, Calif. 94305. U.S.A. ' • a Induction and cytodifferentiation in pancreatic exocrine cells. Mus miisculus (Rodentia) h Epidermal-dermal interaction in relation to histogenesis and to feather germ and limb formation. (Aves) WESTERGAARD, E. M.D. — Dept. of Anat., Royal Dental Coll.. AARHUS, Denmark a Cerebral ventricles of the fetus (studies of the ventricle "models" obtained after injection of Cu-phtalocyanin into the ventricle system followed by clearing). Homo sapiens (Pri- mates) WESTERGAARD, O. Ph.D. — Biol. Inst, of the Carlsberg Found., Tagensvej 16, 2200 COPENHAGEN N.. Denmark a DNA-polymerase activity in correlation to cell cycle and to circumstances where DNA is damaged (UV. X-ray or treatment with chemicals). Tetrahymena pyriformis (Ciliata) WESTERMAN. R. A. Ph.D. — Dept. of Physiol., Monash Univ., CLAYTON, Vict. 3168. Australia a Histological and electrophysiological aspects of regenerating nerve fibres, particularly in the olfactory system. Carassius carassius (Teleostei) WESTERNHAGEN, H. von. — Inst, fiir Hydrobiol. und Fischereiwiss., Univ. Hamburg. Olbersweg 24, 2 HAMBURG-Altona 1, V/.Germany a Effect of temperature and salinity on developing eggs. Belone belone. Gadus morrhua, Pleuronectes flesus, P. platessa (Teleostei) WESTON J. A. Ph.D. — Dept. of Biol., Case Western Reserve Univ., 2080 Adelbert Rd., CLEVELAND, Ohio 44106, U.S.A. a The migration and differentiation of neural crest cells. Gallus domesticus (Aves) h The cell surface as an effector of cell specificity. Gallus domesticus (Aves) c The action of morphogenetic agents on embryonic cell behavior in vivo and i n vitro. Gallus domesticus (Aves) WETHERBEE, D. K. Ph.D.. Prof. — Dept. of Forestry and Wildlife Biol.. Univ. of Massachusetts, AMHERST, Mass.. U.S.A. WEYGOLDT, P. Dr. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 78 FREIBURG. W.Germany a General and comparative embryology. Pseudoscorpionidea and other Arachnida h Evolution of embryonic pumping organ, embryonic nutrition and embryonic envelope. Pseudoscorpionidea and other Arachnida c Embryology. Tarantula marginemaculata (Amblypygidae, Araneida, Arachnida) d Embryology. Euphilomedes producta (Ostracoda, Crustacea) WHALEY. W. G. Ph.D., Prof. — Cell Research Inst., B.L. 220, The Univ. of Texas at Austin, AUSTIN, Tex. 78712, U.S.A. a The progessive development and interactions of cellular organelles with differentiation of tissues, together with the modification of this development by various experimental proce- dures. Zea mays (Gramineae) WHARTON L R. Jr. M.D. — Dept. of Gynecol, and Obstet.. School of Med.. Johns Hopkins Hosp.. 'BALTIMORE, Md. 21205. U.S.A. a The effect of norethindrone on the pregnant female and fetus. Macaca mulatta (Primates) WHITELEY. A. H. Ph.D.. Prof. — Dept. of Zool.. Univ. of Washington, SEATTLE. Wash. 98105. U.S.A. WHITING, H. P. Ph.D. — Dept. of Zool.. Univ. of Bristol. BRISTOL BS8 lUG. England 185 WHITT. G. S. Ph.D. — Dept. of Zool., Univ. of Illinois, URBANA. 111. 61801. U.SA. a Developmental genetics: 1. expression of differential gene function during early embryo- genesis and cytodifferentiation with an emphasis on those genes responsible for isozymes. 2. correlation of lactate dehydrogenase gene homology with the specificity of the gene activating mechanisms during development. 3. genetical, physical, and chemical analysis of the lactate dehydrogenase isozymes unique to the differentiated nervous system. 4. biochemical genetics of isozymes especially lactate dehydrogenase. Fundultts heteroditus. Scomber scombrus, Cynoscion regalis and tropical spp. (Teleostei) b Epigenetic and genetic control of protein synthesis during cytodifferentiation with emphasis on the post-translational control of gene product (especially lactate dehydrogenase iso- zymes), assembly and function. (Teleostei and other Vertebrata) WHITTAKER, J. R. Ph.D. — The Wistar Inst., 36th St. at Spruce, PHILADELPHIA, Pa. 19104, U.S.A. a Biochemical analysis of differentiation and metaplasia of embryonic eye tissues cultured in vitro. Gallus domesticus (Aves) h Melanin biosynthesis and cell regulatory mechanisms in dfferentiating pigment cells. Ciona intestinalis, Styela spec. (Ascidiae), Gallus domesticus (Aves) c Characterization of specific gene expression by primary and established cell cultures. WHITTEN. W. K. D.Sc. B.V.Sc. — The Jackson Lab., BAR HARBOR, Me. 04609, U.S.A. a Preimplantation stages of development in vivo and in vitro. Mus musculus (Rodentia) WIDERSTEN, B. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, Sweden a Larval development. (Scyphozoa) WIERTZ (HOESSELS), Mrs. E. L. M. J. Ph.D. — Vet. Anat. and Embryol. Inst., State Univ. of Utrecht, Bekkerstr. 141, UTRECHT. Netherlands a The influence of penicillin and streptomycin on early development. Gallus domesticus (Aves) b Experiments on neural induction and pattern formation of rhombencephalic and anterior spinal cord region. Gallus domesticus (Aves) WIGGLESWORTH, Sir V. B. Dr., Prof. (Emer.) — Dept. of Zool., Univ. of Cambridge, Downing St., CAMBRIDGE, England • a Mode of action of growth hormones. Rhodnius prolixus (Triatomidae, Hemiptera) WIJFFELS, C. M. — Dept. of Anat. and Embryol, Univ. of Nijmegen, Geert Grooteplein Noord 21, NIJMEGEN, Netherlands a An autoradiographic study of the development of the cerebellum. Cricetulus barabensis gviseus (Rodentia) WILD, A. E. Ph.D. — Dept. of Zool.. Univ. of Southampton, SOUTHAMPTON S09 5NH, England a Protein transmission across foetal membranes. Oryctolagus cuniculus (Lagomorpha) WILDE, A. G. de M.D.. Ph.D., Prof. — Dept. of Anat. and Embryol., State Univ. of Groningen. Oostersingel 69, GRONINGEN, Netherlands WILDE, C. E., Jr. Ph.D., Prof. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol. and Embryol., School of Dental Med., Univ. of Pennsylvania, PHILADELPHIA, Pa. 19104, U.S.A. • a Organogenesis in vitro (limb bud, cranial neural crest). Ambystoma maculatum (Urodela) b Cellular differentiation (pigment cell; ectomesenchyme). Ambystoma maculatum (Urodela) 1. causal biochemistry of cellular differentiation. 2. differentiation of cytoplasmic fragments. c Morphology and causal biochemistry of striated muscle differentiation. Ambystoma macu- latum (Urodela) d 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. Ambystoma maculatum (Urodela) e Cytochimeras in tissue culture from disaggregated cells of embryos of different classes. Gallus 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. Pundulus heteroditus (Teleostei) h The energy pathways of differentiating systems. (Vertebrata) i Informational macromolecules in early development and differentiation. ( Echinodermata, Vertebrata) j The molecular basis of major and minor symmetry in embryogenesis. (Vertebrata) WILDE, J. de Ph.D., Prof. — Lab. of Entomol., Agric. Univ., Binnenhaven 7, P.O.B. 62, WAGENINGEN, Netherlands WILLIAM, Miss N. B.Sc. — Dept. of Zool., Ain Shams Univ., Fac. of Sci., Abassia, CAIRO, Egypt, U.A.R. 186 WILLIAMS. Miss G. H. Ph.D. — Dept. of Zool.. Univ. of Toronto, TORONTO 5, Ont.. Canada WILLIAMS, Mrs. M. LYMAN M.D. — Dept. of Pediat., School of Med., Univ. of Penn- sylvania, PHILADELPHIA, Pa. 19104. U.S.A. WILLIAMS N. E. Ph.D.. Prof. — Dept. of Zool.. Univ. of Iowa, IOWA CITY. Iowa 52240. U.S.A. a Electron microscopy of developing oral apparatus. Tetrahymena spec. (Ciliata) WILLIER. B. H. Ph.D.. Sc.D.. Prof. (Emer.) — Dept. of Biol.. Johns Hopkins Univ.. Charles and 34th Sts., BALTIMORE, Md. 21218, U.S.A. • a Adaptive morphogenesis in the yolk-sac membrane. Gallus domesticus (Aves) WILLISON-BARFORD, Mrs. J. B.Sc. — Plant Physiol. Div., Dept. of Scient. and In- dustrial Research, PALMERSTON NORTH, New Zealand WILSON, E. B.Sc. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de Clinicas, MON TEVIDEO, Uruguay a Regulation of cochlear input in the developing animal. Rattus norvegicus (Rodentia) WILSON, I. B. Ph.D. — Dept. of Zool., Univ. of North Wales. BANGOR. Caer- narvonshire, Wales, U.K. a Investigations on the establishment of implantation and early pregnancy. Mus musculus (Rodentia) b Experimental developmental morphology. Mus musculus (Rodentia) WILSON, J. G. Ph.D., Prof. — The Children's Hosp. Research Found., Elland and Bethesda Aves., CINCINNATI, Ohio 45229. U.S.A. WILT, F. H. Ph.D., Prof. — Dept. of Zool., Univ. of California. BERKELEY, Calif. 94720. U.S.A. • a Mechanism of origin of hemoglobin-synthesizing machinery during development. Gallus domesticus (Aves) h Activation of protein and RNA synthesis in cleaving eggs. Strong ylocentrotus pucpuratus c RNA synthesis during development. Strongylocentrotus purpuratus (Echinoidea) (in col- laboration with J. J. WARTIOVAARA, Helsinki) WIMSATT. W. A. Ph.D., Prof. — Div.of Biol. Sci., Cornell Univ., ITHACA, N.Y. 14850, U.S.A. • WINGSTRAND, K. G. Dr.phil.. Prof. — Inst, of Comp. Anat., Universitetsparken 15. COPENHAGEN 0, Denmark a Embryology. Armillifer spec. (Linguatulida) (in collaboration with A. N^RREVANG) WINNICKI, A. D.Sc. — Fac. of Marine Fish., ul. Kazimierza Krolewicza 3, SZCZECIN, Poland WIREN, A. J. B.Sc. — Dept. of Zool., Univ. of British Columbia, VANCOUVER 8, B.C., Canada a The effects of L-tyrosine and L-phenylalanine on the in vitro differentiation of the early (24-32 hr.) neural crest: the frequency of pigment cell differentiation in various concentrations of the two amino acids and an electron microscopic examination of the cultured cells. Gallus domesticus (Aves) (in collaboration with C. V. FINNEGAN) WIRSfiN, C. M.D. — Dept. of Histol., Karolinska Inst.. Solnavagen 1. STOCKHOLM 60. Sweden WISCHNITZER. S. Ph.D.. Prof. — Dept. of Biol.. Yeshiva Univ., 186th St. and Amster- dam Ave., NEW YORK, N.Y. 10033, U.S.A. a Electron microscopic study of oogenesis. Triturus vicidescens (Urodela), Mus albicans (Rodentia), Saimici sciureus. Homo sapiens (Primates) WITHERS, R. F. J. M.Sc. — Dept. of Biol, as Appl. to Med., The Middlesex Hosp. Med. School, Cleveland St., LONDON. W.l. England a Genetical and developmental study of a trypan blue induced heart malformation. Rattus norvegicus (Rodentia) WITSCHI, E. Ph.D.. M.D., Prof. — Biomed. Div., The Population Council, Rockefeller Univ., NEW YORK, N.Y. 10021. U.S.A. • a Experimental studies on sex development. Xenopus laevis (Anura) h Oogenesis in relation to special hormonal conditions. Rattus norvegicus (Rodentia), Homo sapiens (Primates) c Maturation cycles of eggs in constant-estrus females. Rattus norvegicus (Rodentia) WITTENBORG. M. H. M.D., Prof. — Children's Hosp. Med. Center, 300 Longwood Ave., BOSTON, Mass. 02115, U.S.A. — Harvard Med. School, 25 Shattuck St.. BOSTON, Mass. 02115, U.S.A. WOELLWARTH, C. v. Dr.phil. — Heiligenberg Inst., 7799 HEILIGENBERG. Baden. W.Germany • a Autonome Musterbildung in der Medullarplatte. (Amphibia) b Determination der Kopforgane. (Amphibia) c Entstehung von Situs inversus durch Defekte und verschiedene aussere Einfliisse. (Uro- dela) WOERDEMAN. M. W. M.D.. Prof. (Emer.) — Anat.-Embryol. Inst., Univ. of Amsterdam, Mauritskade 61, AMSTERDAM-O., Netherlands • a Lens development. (Aves; Mammalia) ^ 187 WOLF, R. Dr. — Zool. Inst, der Univ., Rontgenring 10, 87 WtiRZBURG, W.Germany a Correlations between kinematics and specific ultrastructures during early embryogenesis in time-lapse-motion-pictures and electron microscopic investigations. Wachfliella persi- cariae (Cecidomyiidae), Chironomiis thummi (Chironomidae, Dipfera) WOLFF (HENNIG), Mrs. Em. Dr.es Sci. — In.st. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE. France • a Organotypic culture of human cancer tumors taken directly from the patient; long term organotypic culture; culture on embryonic mesonephros; culture on extracts of mesonephros and yeast; fractionation of dialysates of liver extracts. Gallus gallus (Aves), Homo sapiens (Primates) WOLFF, Et. C. Dr.es Sci., Prof. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-'Sur-MARNE, France — Lab. d'Embryol. exper. du Coll. de France. 11 Place Marcelin Berthelot, PARIS Ve, France * a Recherches experimentales sur I'embryologie et la teratologie; monstres simples, monstres doubles et poly-embryonie. (Aves) h La differenciation sexuelle. par les methodes de greffes, de castration, d'injections d'hor- mones et d'explantations; differenciation normale et inversion sexuelle des gonades, des voies genitales et des caracteres somatiques precoces. Gallus spec. (Aves) c Problemes relatifs a la regeneration. Polycelis nigra, Euplanaria lugubris (Turbellacia). Triturus crisfatus (Urodeta) d Culture in vitro de longue duree de tumeurs malignes en presence et en I'absence d'organes embryonnaires. Homo sapiens (Primates) (en collaboration avec Mrs. Em. WOLFF (HENNIG)) e Recherches sur la differenciation et I'intersexualite in vitro et in vivo des gonades embryonnaires. (Aves) WOLK, M. B.Sc. — Dept. of Zool.. Hebrew Univ. of Jerusalem. JERUSALEM, Israel a Separation of epiblast from hypobla.st by inserted membranes in an attempt to detect possible inductive influences. Gallus domesticus (Aves) WOLPERT, L. Ph.D., Prof. — Dept. of Biol, as applied to Med.. The Middlesex Hosp. Med. School, LONDON W.l, England • a Cellular basis of morphogenesis and pattern formation. Hydra spec. (Hydroidea) WOLPOW, E. R. M.D. — Dept. of Neurol., Massachusetts Gen. Hosp., BOSTON, Mass. WOLSKY, A. " Dr.phil., Prof. — Dept. of Biol., Marymount Coll.. TARRYTOWN, N.Y. 10592. U.S.A. _, ^ • a Effect of anti-metabolites, antibiotics (especially actinomycin) and nucleic acids on devel- opment and regeneration. Paracentrotus lividus, Atbacia puncfulata (Echinoidea). Triturus viridescens, Rana pipiens (Amphibia) b A re-investigation of the influence of neurogenesis on the development of the compound eye. Bombyx mori ( Lepidoptera) WOOD J G Ph D., Prof. — Dept. of Anat., The Univ. of Texas Med. School at San Antonio, 7703 Floyd Curl Drive, SAN ANTONIO, Tex. 78229, U.S.A. a Histochemistry and electron microscopy of developing adrenomedullary ceils. Mus mus- cuius (Rodentia) WOODS, J. E. Ph.D. — Dept. of Biol. Sci.. De Paul Univ., 1036 W. Belden Ave.. CHICAGO. 111. 60614, U.S.A. ^ , . , a Hypophysectomy effects upon hydroxysteroid dehydrogenases in the gonads and adrenals of the developing embryo. Gallus domesticus (Aves) h Hypophysectomy effects upon histochemically demonstrable androgens and estrogens in the gonads and adrenals of the developing embryo. Gallus domesticus (Aves) c Ontogenesis of the pituitary-gonadal and pituitary-adrenal axes in the developing embryo. Gallus domesticus (Aves) d Histochemical demonstration of androgens, estrogens and corticoids in the gonads and adrenals of the developing embryo. Gallus domesticus (Aves) WOOL, I. G. Prof. — Dept. of Biol.. Div. of Biol. Sci.. Univ. of Chicago, CHICAGO. 111. 60637. U.S.A. a Regulation of protein synthesis in animal cells and mode of action of insulin WOOLLAM, D. H. M. M.D., D.Sc. — Anat. School. Univ. of Cambridge, Downing St., CAMBRIDGE CB2 3DY. England a Teratology. (Mammalia) ,TTAr.o'7AiirA WOYKE. J. Dr.habil. — Dept. of Beeculture. Agric. Coll.. Ursynow, WARSZAWA 12, Poland a Developmental genetics; sex determination and development of diploid drones. Apis met- lifica (Hymenoptera) i j b Development of reproductive organs and spermatogenesis of diploid drones (larval and pupal stage). Apis mellitica (Hymenoptera) WRBA. H. Dr.med., Dr.rer.nat, Prof. — Inst, fiir Krebsforsch., Univ. Wien, Borschkegasse Sa.'Postfach 72, A- 1090 WIEN. Austria a Stoffwechsel in vitro. (Rodentia) 188 b Eihautbildung, Differenzierung und Missbildung in vitro. (Rodentia) c Heterotransplantation. (Rodentia) WRENN, Mrs. J. O. Th. B.A. — Dept. of Biol. Sci., Stanford Univ., STANFORD, Calif. 94305. U.S.A. a A study of the formation of curved structures from relatively flat sheets of cells; possible causes such as intracellular contractile filaments, localized cell multiplication, and localized dissolution of a connective tissue sheath arc being investigated in the formation of tubular glands from the oviduct. Callus galliis (Aves) WRIGHT, Th. R. F. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHARLOTTESVILLE, Va. 22903, U.S.A. a The genetic control of enzyme activity during development. Drosophila melanogaster (Diptera) b Temperature sensitive lethal mutations affecting embryogenesis. Drosophila melanogaster (Diptera) c Genetic control of myogenesis. Drosophila melanogaster (Diptera) WR6BLEWSKI, R. Dr.med., Prof. — Dept. of Gen. Biol., Silesian Acad, of Med., K. Marksa 19, Rokitnica, ZABRZE 8, Poland, a Morphogenetical aspects in the regeneration of endocrine glands, especially the thyroid. (Rodentia) WURGLER, F. E. Dr. — Dept. of Zool., Swiss Federal Inst, of Technol., Universitatstr. 2, 8006 ZURICH, Switzerland a X-ray effects on gametes, embryos, larvae and pupae: influence of chromosome con- figuration, specific genes and developmental stage X-rayed. Drosophila melanogaster ( Diptera) WURMBACH, H. Dr., Prof. — Inst, fur Landwirtsch. Zool. und Bienenk. der Univ., Melbweg 5, 53 BONN, W.Germany a Beeinflussung des Wachstums und der Differenzierung durch Wirkstoffe (Schilddriisen- hormon, Steroide, teratogene Substanzen). Lebistes spec. (Teleostei). Xenopus laevis. Bufo bufo (Anura), Gallus gallus (Aves) b Formbildende Krafte beim Wachstum ( Wachstumsdynamik); formbildende Bedeutung der Gewebe. Bufo spec, Xenopus laevis (Anura). Gallus gallus (Aves) WYATT, G. R. Ph.D., Prof. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW HAVEN, Conn. 06520, U.S.A. a Protein synthesis, RNA and ribosomes; changes during hormone action and metamorphosis. Hyalophora cecropia (Lepidoptera) b Protein synthesis and transport in oogenesis; regulation by hormones. Blattella germanica (Orthoptera) WYLIE, C. C. B.Sc. — Dept. of Anat. and Embryol., Univ. Coll., Gower St., LONDON W.C.I, England a Study of the ribonucleic acid metabolism in the early embryo. Gallus domesticus (Aves) WYSOCKA, Miss B. B.Sc. — Dept. of Histol. and Embryol., Acad, of Med., ul.Naruto- wicza 60, E0D2, Poland a Comparative histochemical and biochemical studies on amounts and distribution of some inorganic salts in spodograms of lungs and of livers in relation to the level of Na, K, and Ca in blood plasma during embryogenesis. Xenopus laevis (Anura), Rattus norvegicus, Cavia cobaya (Rodentia) WYTTENBACH, C. R. Ph.D. — Dept. of Zool., Univ. of Kansas, LAWRENCE, Kansas 66044, U.S.A. XAVIER MORATO, M. J. Prof. — Inst, de Histol. e Embriol., Fac. de Med., Av. Prof. Egas Moniz, LISBOA 4, Portugal a Histogenesis of the area postrema. Felis catus (Carnivora) b Histogenesis of the neurohypophysis, at microscopical level. Felis catus (Carnivora). Oryctolagus cuniculus (Lagomorpha) c Action of ionizing radiations upon the embryonated egg. Callus domesticus (Aves) (in collaboration with Mrs. M. J. RODRIGUES CORREIA) YAJIMA, H. Ph.D. — Biol. Inst., Fac. of Sci., Ibaraki Univ., Bunkyo 2-1-1, MITO-City, Japan a Comparison of embryonic development between normal and malformed embryos by serial sections of fixed material. Chironomus dorsalis (Diptera) h Malformations induced by irradiation with monochromatic ultraviolet light. Chironomus dorsalis (Diptera) c Effects of temperature during and after centrifugation of eggs on the production of double malformations. Chironomus dorsalis (Diptera) d Effect of ultraviolet irradiation upon the re-entry of pole cells. Chironomus dorsalis (Diptera) YAMADA, K. M. B.A. — Dept. of Biol. Sci., Stanford Univ., STANFORD, Cahf. 94305, U.S.A. a Study of the synthesis of microtubular protein in nerve ganglia after stimulation with nerve growth factor and the relationship of microtubular synthesis to nerve fiber out- growth. Callus gallus (Aves) 189 YAMADA, T. D.Sc, Prof. — Biol. Div.. Oak Ridge Natl. Lab., P.O. Box Y, OAK RIDGE, Tenn. 37830, U.S.A. • a In vitro differentiation of lens fibers. Rana pipiens (Anura), Triturus viridescens (Ucodela) b Activation of cell replication in Wolffian lens regeneration. Triturus viridescens (Urodela) c Dedifferentiation in Wolffian lens regeneration. Triturus viridescens (Urodela) YAMADA, T. M.Sc. — Div. of Biol., Natl. Inst, of Radiol. Sci., Anagawa 4-9-1, CHIBA, (280), Japan a Biochemical studies on effect of radiation on the embryo. Ocyzias latipes (Teleostei), Bufo vulgaris (Anura) YAMADORI, T. M.D., Prof. — Dept. of Anat., Hirosaki Univ. School of Med., Zaifucho-5, HIROSAKI City, Aomori Pref. 036, Japan a Developmental study of the central nervous system. Homo sapiens (Primates) b Developmental study of the nerve cells in the spinal ganglia. Rattus norvegicus (Rodentia) YAMAGAMI, K. Ph.D. — Zool. Inst., Univ. of Tokyo, Hongo 7-3, Bunkyo-ku, TOKYO, (113) Japan a Biochemical studies on embryonic and yolk proteins. (Teleostei) b Partial purification of chorionase. Oryzias latipes (Teleostei) c Ontogeny of hemoglobins in embryos and larvae before complete absorption of yolk material. Salmo gairdnerii syn. irideus (Teleostei) YAMAGUCHI, T. Ph.D. — Div. of Biol., Natl. Inst, of Radiol. Sci., 4-9-1 Anagawa, CHIBA, (280) Japan a Regeneration of thymus after radiation-induced involution. Rattus norvegicus, Mus mus- culus (Rodentia) h Role of thymus in immunogenesis. Rattus norvegicus, Mus musculus (Rodentia) YAMAMOTO, K. D.Sc, Prof. — Lab. of Fresh-water Fish Cult., Dept. of Biol., Fac. of Fisheries, Hokkaido Univ., HAKODATE, Japan • a Histo-physiological studies of oogenesis. (Teleostei) b Electron microscopical studies of oogenesis. (Teleostei) c Studies on the hormones of reproduction. (Teleostei) YAMAMOTO, T. Dr.Med., Dr.Med.Sci., Prof. — Dept. of Anat., Fac. of Med., Kyushu Univ., FUKUOKA, 812 Japan a An electron microscope study of the developing intestinal epithelium. (Mammalia) YAMAMOTO, T. D.Sc. Prof. — Biol. Inst.. Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan • YAMAMOTO, T. S. D.Sc. — Zool. Inst., Fac. of Sci., Hokkaido Univ., North 10 West 8, SAPPORO, 060 Japan a Cytochemical investigation on development. (Teleostei) YAMAMURA, H. M.D. — Dept. of Anat., School of Med., Hiroshima Univ., Kasumi-cho, HIROSHIMA, Japan YAMAMURA, S. M.D. — Japan Dental Pathol, and Embryol. Research Inst., c/o Yama- mura Dental Office, No. 12 Higashi-Ichi-Bancho, SENDAI, Japan YAMANA, K. D.Sc, Prof. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA, 812 Japan a Regulation of ribosomal RNA synthesis during embryonic development. Xenopus laevis (Anura) YANAGIMACHI, R. Ph.D. — Dept. of Anat., Univ. of Hawaii, 1951 East-West Rd.. HONOLULU, Hawaii 96822, U.S.A. a In vitro fertilization and development of eggs. Mesocricetus auratus, Rattus nor- vegicus, Mus musculus (Rodentia) h Chromosomes and development. Mesocricetus auratus. Rattus norvegicus, Mus musculus (Rodentia) YANAGISAWA, T. D.Sc, Prof. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 chome, Fukazawa-machi, Setagaya-ku, TOKYO (158). Japan a Phosphagens in egg and spermatozoa. (Echinodecmata) b Ion exchange and paper chromatographic studies on the nature of the acid-soluble nucleo- tides in the egg and their changes during development. Hemicentrotus spec, Anthocidaris spec, Pseudocentrotus spec. ( Echinoidea ) , Asterias spec, Asterina spec (Asteroidea) c Tracer experiments on phosphate, sugar and nucleic acid metabolism of embryo. (Echino- dermata) YANG, W. T. Ph.D. — Inst, of Marine Sci., Univ. of Miami, 1 Rickenbacker Causeway, Virginia Key, MIAMI, Fla. 33149, U.S.A. YASUDA, M. M.D. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo-ku, KYOTO 606, Japan a Epidemiological studies on anomalies in embryos. Homo sapiens (Primates) h Chromosome aberrations and the sex ratio in embryos. Homo sapiens (Primates) c Morphogenesis of certain malformations of extremities in embryos. Homo sapiens (Pri- mates) YASUDA, Mrs Y. M.D. — Dept. of Anat., Kyoto Univ., Yoshida, Konoe-cho, Sakyo-ku, KYOTO 6L<>. Japan 190 a Gamparative study on in vitro development of organ primordia. Mus mtisculus (Ro- dentia). Homo sapiens (Primates) YATVIN, M. B. Ph.D. — Dept. of Radiol., Med. School, Univ. of Wisconsin, 1300 Uni- versity Ave.. MADISON, Wis. 53706, U.S.A. YAZAKI, Miss I. M.A. — Embryol. Sect., Dept. of Biol., Tokyo Metropolitan Univ., Setagaya-ku, TOKYO, Japan YAZYKOV, A. A. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. YNTEMA, C. L. Ph.D., Prof. — Dept. of Anat., School of Med., State Univ. of New York, 766 Irving Ave., SYRACUSE, N.Y. 13210, U.S.A. • a Development of carapace. Chelydra serpentina (Chelonia) b Incidence of twinning. Chelydra serpentina (Chelonia) c Acceptance of homografts and xenografts during embryonic stages. (Chelonia) YOSHIDA, K. Ph.D. — Dept. of Radiotherapy, Cancer Research Lab., Mercy Hospital. 1400 Locust St., PITTSBURGH, Pa. 15219, U.S.A. a Macromolecular synthesis during lens differentiation in vitro. Callus domesticus (Aves) YOSHIKAWA, I. — Dept. of Genet., School of Med., Nagasaki Univ., 12-4, Sakamoto- machi, NAGASAKI, Japan a Radiation genetics (embryo, germ cells). Drosophila melanogasfec (Diptera) YOSHIKAWA (FUKADA), Mrs. M. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington. 115 W. University Parkway. BALTIMORE, Md. 21210, U.S.A. a Animal viruses (esp. tumor viruses) as tools in studying embryonic development. Callus gallus (Aves) (in collaboration with J. D. EBERT and R. J. HAY) YOUNG, B. — Dept. of Botany, Univ. of Alberta, EDMONTON, Alta., Canada YOUNG, B. A. M.D., Ph.D. — Anat. School, Univ. of Cambridge, Downing St.. CAM- BRIDGE CB2 3DY, England a Electron microscopy of the placenta. ( Pinnipedia, Cetacea) b Electron microscopy of developing endocrine glands. (Pinnipedia. Cetacea) YQ (KOU), Mrs. N. W. B.S. — Dept. of Biomorph., Natl. Defense Med. Center, P.O. Box 7432, TAIPEI, Taiwan, Republ. of China a Tadpole tissue competence to thyroxin treatment at different periods after thyroidectomy. Rana spec. (Anura) h Growth and pituitary cytology of thyroidless adults induced from thyroxin treatment on thyroidectomized tadpoles. Rana spec. (Anura) YUROVITZKY, Yu. G. Cand.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. YVROUD, Miss M. — Lab. d'Anat. Comp., Fac. des Sci. d'Orsay, Univ. de Paris, Batiment 441, 91-ORSAY. France a Etude experimentale du developpement du canal naso-lacrymal chez les larves. Discoglos- sus pictus, Alytes obsfefricans (Anura) ZAAIJER, Miss J. J. P. Ph.D. — Lab. for Cell Biol, and Histol., Fac. of Med., State Univ., Rijnsburgerweg 10, LEIDEN, Netherlands • a Limb development (organ culture). (Vertebrata) h Hormonal activity of fetal gonads and adrenal glands with regard to the development of the reproductive tract (organ culture). (Aves; Mammalia) ZACCANTI, F. Dr. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Qacomo 9, 40126 BOLOGNA, Italy a I n V i t r o culturing of larval and adult gonads. Bufo bufo, Rana dalmatina (Anura) b Hormonic regulation of ovarian and Bidder's organ oogenesis. Buio bufo (Anura) ZAFFAGNINI, F. Dr., Prof. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Giacomo 9, 40126 BOLOGNA, Italy a Cytochemical and electron microscopical study of the nurse-cells and oocyte differentiation. Daphnia magna (Cladocera) b Endocrine centres, growth, moulting and gametogenesis. Daphnia magna (Cladocera) c Organization of reproductive system and gametogenesis. Limnadia lenticulads (Concho- straca), Derocheilocaris remanei (Mystacocarida, Crustacea) ZAFIRATOS, K. Ph.D. — Zool. Lab. and Museum, Fac. of Sci., Univ. of Athens, Panepis- timiopolis (Kouponia), ATHENS (621), Greece ZAHLAVA, J. MUDr.. CSc. — Inst, of Pathophysiol., Med. Fac, Charies Univ., Lidicka 1, PLZEl^, Czechoslovakia ZALIK, S. Ph.D., Prof. — Div. of Plant Biochera. and Physiol., Dept. of Plant Sci., Univ. of Alberta, EDMONTON, Alta., Canada ZAMBONI, L. M.D., Prof. — Dept. of Pathol.. Harbor Gener. Hosp.. U.C.L.A.. 1000 W. Carson St., TORRANCE, Calif. 90509, U.S.A. a Electron microscope studies on the fertilization process. Homo sapiens and other spp. (Primates) h Embryonal development. Homo sapiens (Primates) ZAVANELLA, Miss T. Dr.biol.sci. — Cat. di Anat. Comp., Univ. di Milano, Via Celoria 10. MILANO. Italy 191 ZEILMAKER, G. H. Ph.D. — The Netherlands Cancer Inst., Sarphatistraat 108, AMSTER- DAM, Netherlands a Endocrine aspects of blastocyst-implantation. Rattus norvegicus (Rodentia) b Egg transplantation. Mus musculus (Rodentia) c Development of ectopic trophoblast. Ratfus norvegicus, Mus musculus (Rodentia) ZELENA (TOPICOVA), Mrs. J. MUDr., C.Sc. — Lab. of Electr. Microsc, Inst, of Physiol., Czcchoslov. Acad, of Sci., Flemingovo n. 2, PRAHA 6, Czechoslovakia ZERBIB, C. D.E.S. — Lab. de Genet. Evolut. et de Biometrie, C.N.R.S., 91 GIF-sur- YVETTE. France a Controle endocrine de la differenciation sexuelle. Lithobius forficatus (Chilopoda) h Developpement post-embryonnaire de I'appareil genital. Scolopendra canidens (Chilopoda) ZILLER (SENGEL), Mrs. C. Dr.es Sci — Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 94-NOGENT-sur-MARNE, France — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France a In V it r o culture of regenerating tissues and organs. Dugesia lugubris, D. tigrina. Po- ly celis nigra (Turbellaria) b Influence of various factors (tissue and organ extracts) on pharynx regeneration. Dugesia lugubris, D. tigrina. Poly cells nigra (Turbellaria) ZIMMERMAN, A. A. Prof. (Emer.) — Dept. of Anat., Coll. of Med., Baylor Univ., HOUSTON, Tex., U.S.A. • ZIMMERMANN, W. Dr.rer.nat. — Arbeitsgr. Prof. G. H. M. Gottschewski am Max- Planck-Inst. fiir Immunbiol., Stefan-Meicr-Str. 8, 78 FREIBURG, W.Germany a Normal development of early stages with special reference to the immunological and nutritional relations with the mother. Mesocricetus auratus, Cavia cobaya (Rodentia) b Determination and diffentiation of the organ anlagen analysed by the use of teratogenic substances. Mesocricetus auratus, Cavia cobaya (Rodentia) ZINN, K. M. M.D. — Ophthalmol. Dept., The Mount Sinai Hosp., 100th St. and Fifth Ave., NEW YORK, N.Y. 10029, U.S.A. a Corneal morphogenesis (electron microscopy etc.). Callus domesticus (Aves) b Lens morphogenesis (electron microscopy etc.). Callus domesticus (Aves) c The effects of lens removal on the development of the cornea. Callus domesticus (Aves) d Protein synthesis in the developing lens (electron microscopy, sucrose density gradients, autoradiography etc.). Callus domesticus (Aves) ZITO (BIGNAMI), Mrs. R. Ph.D. — Lab. di Radiobiol. Anim., C.S.N. - Casaccia, C.P. 2400, 00100 ROMA, Italy a Cell differentiation and developmental genetics. b Molecular mechanisms of early embryonic differentiation. Mus musculus (Rodentia) ZOTIN A I. Dr.biol.sci. — Lab. of Developm. Biophys., Inst, of Developm. Biol., Acad. of Sci. of the U.S.S.R., 26 Vavilov St., MOSCOW V-133, U.S.S.R. ZUCCHI. R. Ph.D. — Dept. of Genet., Fac. of Sci., Univ. of Sao Paulo, P.O. Box 301, RIBEIRAO PRETO, S.P., Brazil ZUCKERMAN, Sir S. M.D., D.Sc, Prof. — Zool. Soc. of London, Regent's Park, LON- DON N.W.I, England a Development of the reproductive system; gametogenesis. (Rodentia: Primates) ZUST, Miss B. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Cedex 53, 38 GRENOBLE, France a Effects of hydrocortisone on the development of skin and feathers; sensitivity of dermis and epidermis to hydrocortisone (electron microscopy). Callus domesticus (Aves) ZWAAN, J. M.D., Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of Virginia, CHARLOTTESVILLE, Va. 22901, U.S.A. • a Analysis of macromolecular synthesis during induction and differentiation of the eye lens. Callus domesticus (Aves), Mus musculus (Rodentia) h Developmental genetics of mutations affecting eye development. Mus musculus (Rodentia) ZWILLING, E. Ph.D., Prof. — Dept. of Biol., Brandeis Univ., WALTHAM, Mass. 02154, U.S.A. • a Disaggregation and reaggregation of early embryos; effects on differentiation. Callus domesticus (Aves) h Culture behaviour of early embryonic tissues. Callus domesticus (Aves) c Ectoderm-mesoderm interaction in limb development. Callus domesticus (Aves) 192 DIRECTORY OF INSTITUTES with Members engaged in Developmental Biology (geographical order) The Directory is arranged according to: 1 ) continents and subcontinents; 2) countries and states; and 3) cities. Within each of these categories an alpha- betical order is maintained. The Directory does not give Institute addresses. These can be found by looking up the name of one of the Institute members in the Directory of Names and Addresses. Names of Institute members who are not explicity engaged in developmental biology are as a rule not listed, with the exception of the names of Institute directors. ( * ) Asterisks indicate those Institute members who appear in the Directory of Names and Addresses with one or more research subjects. If all members of an Institute lack asterisks, this usually means that no information has been sub- mitted by the Institute in 1969. Older information concerning such Institutes may be found in previous issues. AFRICA EGYPT Alexandria, Alexandria Univ., Fac. of Sci., Dept. of Zool. * SEDRA, S. N. Prof. * MICHAEL, M. I. Asst. Prof. * KHALIL, S. H. Demonstr. Cairo, Ain Shams Univ., Fac. of Sci., Dept. of Zool. KAMEL, A. Prof. WALASH, M. N. Teacher ABU-SINNA, G. M. E. Demonstr. ELGAMMAL, A. E. Demonstr. WILLIAM, Miss N. Demonstr. FARAG, A. E. Demonstr. HAMMOUDA, E. I. Demonstr. Giza, Cairo Univ., Fac. of Agric, Anim. Prod. Dept. * KAMAR, G. A. R. Assoc. Prof. NIGERIA Ibadan, Univ. of Ibadan, Dept. of Anat. GRILLO, T. A. I. Prof.. Head BAXTER (GRILLO), Mrs. D. L. DESALU, A. B. O. LIPEDE, A. G. TAKOR, T. T. NAGANO, T. KUBOTA, K. KALANGO, Miss M. I. AFONYA, I. I. SIERRA LEONE Freetown, Njala Univ. Coll., Dept. of Zool. * CHAYTOR, D. E. B. Assoc. Prof. Freetown, Univ. Coll. of Sierra Leone, Fourah Bay coll. LE'JOHN, H. E. B. Lect. (Mycol.) SOUTH AFRICA Bloemfontein, Univ. of O.F.S., Dept. of Zool. * DREYER, Miss M. V. Lect. Durban, Univ. Coll., Dept. of Zool. * SMIT, A. L. Prof., Head * FRANK, G. H. Sen. Lect. Johannesburg, Univ. of the Witwatersrand, Dept. of Zool. * SWANEPOEL, J. H. Lect. Johannesburg, Univ. of the Witwatersrand Med. School, Dept. of Anat. * ANDREW, Miss A. Sen. Lect. Fac. of Sci., Dept. of Zool. * BALINSKY, B. I. Prof., Head * GABIE (GUBBAY), Mrs. V. Sen. Lect. * GAUNTER (DEVIS), Mrs. R. J. Lect. Onderstepoort, Univ. of Pretoria, Fac. of Vet. Sci., Dept. of Anat. DE BOOM, H. P. A. Prof., Head GERNEKE, W. H. Sen. Lect. LEROUX. J. M. W. Sen. Lect. 193 South Africa Canada (Ont.) Pretoria, Univ. of Pretoria, Fac. of Sci., Dept. of Zool. DE GRAAFF, G. Asst. Prof. COETZEE. F. C. Techn. Asst. SCHEEPERS. G. J. Techn. Asst. Stellenbosch, Univ. of Stellenbosch, Dept. of Anat. * TOERIEN, M. J. Sen. Lect. Fac. of Sci., Zool. Inst. TOIT, C. A. du Prof., Dir. JURGENS. J. D. Lect. VISSER, M. H. C. Lect. ZAMBIA Chilanga, Centr. Fish. Research Inst. * BALON. E. K. NORTH AMERICA CANADA ALBERTA (Alta.) Calgary, Univ. of Calgary, Fac. of Arts 6 Sci., Dept. of Physics * CHALLICE, C. E. Prof., Head Fac. of Sci. & Med., Depts. of Biol. & Morphol. Sci. * DICKSON, A. D. Prof., Head Div. Morphol. Sci. * CHURCH, R. B. Assoc. Prof. * DAGLIESH, G. Edmonton, Univ. of Alberta, Fac. of Sci., Dept. of Botany YOUNG, B. Asst. Prof. Dept. of Entomol. * CRAIG, D. A. Asst. Prof. Dept. of Genet. NASH, D. Asst. Prof. Dept. of Plant Sci. ZALIK, S. Dept. of Zool. * RUTH, R. F. Assoc. Prof. * EISENBERG-ZALIK, Mrs. S. Asst. Prof. * LONGENECKER, B. M. Res. Assoc. * KNIZETOVA (VEJP), F. Res. Assoc. * SIDKY. Y. A. Res. Assoc. BRITISH COLUMBIA (B.C.) Vancouver, Univ. of British Columbia, Dept. of Zool. * FINNEGAN. C. V. Prof. * FORD, P. Assoc. Prof. * ACTON, A. B. Assoc. Prof. * AUERSPERG, N. Assoc. Prof. * FRANCIS, D. W. Asst. Prof. * GOULD-SOMERO, Mrs. M. Postdoct. Fellow * LARRIVEE, D. H. Grad. Stud. * ODAY, D. H. Grad. Stud. * WIREN, A. J. Grad. Stud. * HALL, Mrs. E. J. Grad. Stud. * CHI, Miss Y. Y. Grad. Stud. * HUNTER, R. M. Grad. Stud. MANITOBA (Man.) Winnipeg, Univ. of Manitoba, Fac. of Agric, Dept. of Entomol. * BRUST, R. A. Assoc. Prof. Fac. of Agric, Plant Sci. Dept. * LA CROIX, L. J. Assoc. Prof. * FRAGATA, M. Postdoct. Fellow Facs. of Med. and Dentistry, Dept. of Anat. * BERTALANFFY, F. D. Prof. NAGY, K. P. Assoc. Prof. HYDE, J. B. Assoc. Prof. Dept. of Oral Biol. * PRITCHARD, E. T. Assoc. Prof. Dept. of Zool. * LAALE, H. W. Asst. Prof. NOVA SCOTIA (N.S.) Halifax, Dalhousie Univ., Fac. of Arts & Sci., Dept. of Biol. MALTZAHN, K. E. von Head HALL, B. K. Asst. Prof. WEHRMAKER, A. H. Asst. Prof. Med. School, Biochem. Dept. * WAINWRIGHT, S. D. Prof. * WAINWRIGHT, Mrs. L. K. Assoc. Prof. * PRCHAL, J. F. Postdoct. Fellow * THOMPSON, Mrs. J. T. Grad. Stud. ONTARIO (Ont.) Guclph, Univ. of Guelph, Dept. of Zool. GEORGE, J. C. Prof. Hamilton, McMaster Univ., Fac. of Med., Dept. of Anat. * ANDERSON, J. E. Prof., Chairman * CARR, D. H. Prof. * McCALLION, D. J. Prof. London, Univ. of W. Ontario, Health Sci. Center, Dept. of Anat. * HOSHJNO, K. Assoc. Prof. * SINGH. R. P. Asst. Prof. * SHAVER, Miss E. L. * DICKSON, D. H. Coll. of Sci., Dept. of Zool. * BATTLE, Miss H. I. Prof. * PURKO, J. Assoc. Prof. * ROSS, G. T. Grad. stud, and Demonstr. * BELLWARE, F. T. Grad. stud, and Demonstr. * JACQUES, Miss S. Y. Grad. stud, and Demonstr. Ottawa, Anim. Research Inst., Dept. of Agric. * ROBERTSON, H. A. Chief Physiol. Sect. Ottawa, Carleton Univ., Fac. of Sci., Dept. of Biol. * BETZ, T. W. Asst. ProL Toronto, Univ. of Toronto, Dept. of Zool. CHANT, D. A. Prof., Chairman * LIVERSAGE, R. A. Assoc. Prof. * MASUI, Y. Assoc. Prof. * LAI-FOOK, Miss J. E. I. Asst. Prof. KELLAND, J. L. Asst. Prof. 194 Canada (Ont.) U.S.A. (Calif.) WILLIAMS. Miss G. H. Asst. Prof. STACKHOUSE, H. L. Asst. Prof. QUEBEC (Que.) Montreal, McGill Univ., Med. School, Dept. of Anat. * LEBLOND, C. P. Prof. * CLERMONT. Y. Prof. * HUCKINS, Miss C. Asst. Prof. Dept. of Genet. ERASER, F. C. Prof. TRASLER, Mrs. D. G. Res. Assoc. Montreal, Montreal Cancer Inst., Notre Dame Hosp. * KARASAKI, S. Res. Assoc, Prof. Montreal, Univ. of Montreal, Fac. of Sci., Dept. of Biol., Lab. of Molec. Biol. * COUSINEAU. G. H. Asst. Prof. * BAL, A. K. Asst. Prof. * INOUfi, S. Asst. Prof. SASKATCHEWAN (Sask.) Saskatoon, Canada Agriculture, Research Branch, Research Station * DAVIS. G. R. F. Research Scient. * CHURCH, N. S. Research Scient. * EWEN, Al. B. Research Scient. Saskatoon, Univ. of Saskatchewan, Dept. of Anat. * FEDOROFF. S. Prof., Dir. * BUTLER, H. Prof. * WENGER. B. S. Prof. * WENGER, Mrs. E. L. Research Assoc. Dept. of Biol. * JAMES. D. A. Asst. Prof. West. Coll. Vet. Med. * LATSHAW, W. K. Assoc. Prof. UNITED STATES ALABAMA (Ala.) Birmingham, Univ. of Alabama, Med. Center. Dept. of Anat. SENSENIG. E. C. Prof., Chairman HUMPHREY, Miss T. Prof. BROWN, J. W. Assoc. Prof. ARIZONA (Ariz.) Tucson, Univ. of Arizona, Dept. of Biol. Sci. * BAGNARA, J. T. Prof. ARKANSAS (Ark.) Fayettcville, Univ. of Arkansas, Dept. of Zool. * LOEFFLER, C. A. Asst. Prof. CALIFORNIA (Calif.) Berkeley, Clin. Pharmacol. Research Inst. * LOWER, W. R. Res. Assoc. Berkeley, Univ. of California, Fac. of Agric, Dept. of Poultry Husbandry * TAYLOR, L. W. Prof. (Emer.) Berkeley, Univ. of California, Dept. of Genet. FRISTROM. J. W. Asst. Prof. Dept. of Zool. * EAKIN, R. M. Prof. * HARRIS, M. Prof. * STERN, C. Prof. BERG. W. E. Prof. * WILT, F. H. Assoc. Prof. BIRKY, C. W. Jr. Asst. Prof. * TOKUNAGA, Miss C. * FRISTROM, Mrs. D. Res. Assoc. * BAKER, Mrs. P. C. Visit. Lect. Davis, Univ. of California, Dept. of Poultry Husbandry GRAU, C. R. Prof. ABBOTT. Miss U. Prof. BISHOP (CALAME), Mrs. S. M. Dillon Beach, Univ. of the Pacific, Pacific Marine Station * TUCKER. J. S. Assoc. Prof. * BLAKE, J. A. Asst. Prof. Biol. Duarte, City of Hope Med. Center, Dept. of Biol. * OHNO, S. Chairman * SEECOF, R. L. Res. Scient. Hayward, Calif. State Coll., Dept. of Biol. Sci. * HEATH. H. D. Prof. Irvine, Univ. of Calif., School of Biol. Scis., Dept. of Organismic Biol. SCHNEIDERMAN, H. A. La Jolla, Univ. of Calif. San Diego, Dept. of Biol. * STERN, H. Prof. * BUTLER, W. L. Prof. * FRIEDKIN, M .E. Prof. * HOLLAND. J. J. Prof. * KAPLAN, N. O. Prof. * LINDSLEY, D. L. Prof. * MILLS, S. E. Prof. * SATO, G. H. Prof. * DUTTON, R. W. Assoc. Prof. * VARON, S. S. Assoc. Prof. * HOTTA, Y. Assoc. * HUMPREYS, T. D. Asst. Prof. * LOOMIS, W. F., Jr.. Asst. Prof. * BRODY. S. Asst. Prof. * CHRISPEELS, M. J. Asst. Prof. ■ * ROTH. T. F. Asst. Prof. * FREEMAN. G. L. Asst. Prof. * GROBSTEIN, C. * SCHULMAN. H. M. Asst. Prof. * SIMON, M. I. Asst. Prof. Los Angeles, Univ. of California, Center for Health Sci., School of Med., Dept. of Anat. HERZBERG, F. Assoc. Res. Anat. Dept. of Med. Microbiol, and Immunol. * VOCE, Mrs. M. Prof. School of Publ. Health * COLLIN, W. K. Postdoct. Fellow Dept. of Pathol. * ZAMBONI. L. Assoc. Res. Pathol. Los Angeles, Univ. of Calif., Dept. of Zool. * SJOSTRAND, F. S. Prof. Los Angeles, Univ. of S. California, Dept. of Biol. Sci. * PRAY, T. R. Assoc. Prof. * BAKER, R. F. Asst. Prof. Dept. of Obstet. and Gynecol. * BERNSTEIN, G. S. Instr. 195 U.S.A. (Calif.) U.S.A. (Conn.) Northridge, San Fernando Valley State Coll. LEFEVRE, C, Jr. Chairman SEGAL, E. Assoc. Prof. (Biol.) Pacific Grove, Stanford Univ., Hopkins Marine Station * EPEL. D. Asst. Prof. Palo Alto, Stanford Univ., School of Med., Dept. of Gynecol, and Obstet. GATES, A. H. Asst. Prof. Dept. of Pediat. * KRETCHMER, N. Prof. * DOHERTY, R. A. Asst. Prof. * MARINKOVICH, V. A. Asst. Prof. * PAGE, L. A. Asst. Prof. Pasadena, Calif. Inst, of Technol., Div. of Biol. * SPERRY, R. W. Div. of Biol., Dept. of Developm. Biol. PIKO, L. Sen. Res. Fellow SMITH, A. E. S. Res. Fellow CASTA5JEDA, M. Res. Fellow FIRTEL, R. A. Grad. Stud. Riverside, Univ. of Calif., Dept. of Life Sci. * MOORE, J. A. Prof. * MOORE, Mrs. B. C. Res. Assoc. * MORETTI, R. L. Asst. Prof. San Francisco, San Francisco State Coll., Dept. of Cell and Molcc. Biol. * DUNCAN, J. T. Assoc. Prof. * BO WEN, Mrs. S. T. Assoc. Prof. * STUBBS, J. D. Asst. Prof. San Francisco, Univ. of Calif., School of Med., Dept. of Anat. * MONIE, I. W. Prof., Chairman * ASLING, C. W. Prof. * GLASS, Miss L. E. Assoc. Prof. * ROGERS, K. T. Assoc. Prof. * CHAMBERLAIN, J. G. Asst. Prof. * ARMSTRONG, Mrs. R. C. Lect. Dept. of Pediat. * DALLMAN, P. R. School of Dentistry, Dept. of Dental Anat. * COLEMAN, R. D. Assoc. Prof. San Luis Obispo, Calif. State Polytechnic Coll., Biol. Sci. Dept. * THURMOND, W. Prof. * RITSCHARD, R. L. Asst. Prof. * KREJSA. R. J. Asst. Prof. * LUSE, Miss S. A. Santa Barbara, Univ. of Calif., Dept. of Biol. Sci. TRIPLETT, E. L. Assoc. Prof. Stanford, Stanford Univ., School of Med., Dept. of Anat. * GRAY, D. J. Prof. * BURDA-WILSON, Mrs. D. J. Asst. Prof. Dept. of Med. * STOCKDALE, F. E. Asst. Prof. Dept. of Pediat. and Human Developm. * BERNFIELD. M. R. Asst. Prof. Dept. of Pharmacol. * SCHIMKE, R. T. Prof. * PALMITER, R. D. Postdoct. Fellow Dept. of Biol. Sci. * WESSELLS, N. K. * CENTER, Mrs. E. M. * WRENN, Mrs. J. O. Th. Grad. Stud. * BRADLEY, M. O. Grad. Stud. * YAMADA, K. M. Grad. Stud. * ANDERSON, Miss M. J. Grad. Stud. Torrance, Harbor Gen. Hosp., Dept. of Pathol. * ZAMBONI, L. Assoc. Prof. STEFANINI, M. Res. Assoc. SMITH, Miss D. Res. Assoc. OVRA, Ch. Res. Assoc. COLORADO (Colo.) Boulder, Univ. of Colorado, Graduate School, Inst, for Developm. Biol. RUNNER, M. N. Prof., Dir. DANIEL, J. C, Jr. Assoc. Prof. PRESCOTT, D. M. Prof. McCONKEY, E. H. Assoc. Prof. GOLDSTEIN, L. Prof. HAM, R. G. Asst. Prof. PENE, J. J. Asst. Prof. FLICKINGER. C. J. Asst. Prof. Colorado Springs, The Colorado Coll., Dept. of Biol. * HEIM, W. G. Prof. Denver, Univ. of Colorado, Med. Center * BLOCK, M.H. Prof., Chief Div. Hematol. Dept. of Anat. SCHULTZ, R. L. Assoc. Prof. SEALE, R. U. Asst. Prof. LARKIN, L. H. Instr. Fac. of Arts and Sci., Biol. Dept. * WEISHEIT-SCHULTZ, Mrs. P. Prof., Assoc. Chairman CONNECTICUT (Conn.) Hartford, Trinity Coll., Dept. of Biol. * VAN STONE, J. M. Prof. * CRAWFORD, R. B. Assoc. Prof. Middlctown, Wesleyan Univ., Dept. of Biol. * HANSON, E. D. Prof. * KIEFER, B. I. Asst. Prof. * INFANTE, A. A. Asst. Prof. * BERRY, S. J. Asst. Prof. New Haven, Yale Univ., Fac. of Arts and Sci., Dept. of Biol. * MARKERT, C. L. Prof., Chairman * POULSON, D. F. Prof. * BOELL, E. J. Prof. * TRINKAUS, J. P. Prof. * WYATT, G. R. Prof. * GALL, J. G. Prof. * GALSTON, A. W. Prof. * BOUCK, G. B. Assoc. Prof. * RUDDLE, F. H. Assoc. Prof. * SUSSEX, I. M. Assoc. Prof. * BETCHAKU, T. Instr. * CLUTTER. Mrs. M. E. SUSSEX, * DOANE, Mrs. W. W. Res. Assoc. and Lect. 196 U.S.A. (Conn.) U.S.A. (Hawaii) * RAMUS. J. S. Asst. Prof. * ROSENBAUM. J. L. Asst. Prof. School of Med., Dept. of Anat. STONE. L. S. Prof. * GEHRING, W. J. Assoc. Prof. Dept. of Radiol. * SPENCER. R. P. Prof. School of Forestry * BERLYN, G. P. Assoc. Prof. NOVAK. J. Grad. Stud. MELCAREK, P. Grad. Stud. Storrs, Storrs Agric. Exper. Station, Dept. of Anim. Genet. * PIERRO, L. J. Prof. * GOETINCK, P. F. Assoc Prof. * KLEIN. N. W.. Assoc. Prof. Storrs, Univ. of Connecticut, Dept. of Zool. HERRMANN. H. Prof. LAUFER, H. Assoc. Prof. MARCHOK, Miss A. Asst. Prof. DISTRICT OF COLUMBIA (D.C.) Washington, The Catholic Univ. of America, Grad. School of Arts & Sci., Dept. of Biol. * LYNN, W. G. Prof. Washington, Georgetown Univ., Schools of Med. and Dentistry, Dept. of Anat. BHUSSRY, B. R. Prof.. Chairman MENSCHIK, Z. Assoc. Prof. PARNELL (KING), Mrs. J. Assoc. Prof. GOERINGER. G. C. Asst. Prof. DESSOUKY. D. A. Instr. Grad. School of Arts 6 Sci.. Dept. of Biol. * KING, T. J. Prof. * CHIARODO. A. J. Asst. Prof. * CHEN. P. K. Asst. Prof. * CLIVE, D. Res. Assoc. Washington, Howard Univ., Coll. of Med.. Dept. of Anat. BARTONE. J. C, Asst. Prof. Washington, Trinity Coll., Dept. of Biol. * DIMOND, Sister M. T. Prof. FLORIDA (Fla.) Boca Raton, Florida Atlantic Univ., Dept. of Biol. Sci. DOBKIN. Sh. Asst. Prof. Coral Gables, Univ. of Miami. Dept. of Biol. * GRABOWSKI. C. T. Prof. * IVERSON. R. M. Prof. * CLEGG. J. S. Assoc. Prof. Inst, of Molec. Evolution METZ, C. B. Prof. HINSCH. Miss G. W. Prof. Gainesville, Univ. of Florida, Coll. of Med., Dept. of Anat. Sci. * JOHNSON, E. M. Prof. * KAPLAN, S. Asst. Prof. Dept. of Zool. * BROOKBANK, J. W. Prof. * GREGG, J. H. Prof. Miami, Univ. of Miami. School of Med.. Dept. of Physiol. * ROCKSTEIN, M. Prof. * GRAY. Miss F. H. Postdoct. Fellow Inst, of Marine Sci. OWRE (BOEHME), Mrs. M. H. Assoc. Prof. PROVENZANO, A. J. Assoc. Prof. YANG, W. T. Res. Scient. ROBERTSON, P. B. Res. Asst. Pcnsacola, Univ. of W. Florida, Dept. of Biol, and Marine Sci. * DASARO, C. N. Asst. Prof. Sarasota, New Coll., Dept. of Biol. * MORRILL, J. B. Prof. Tallahassee, Florida State Univ., Dept. of Biol. Sci. * BURDICK, M. L. Asst. Prof. Dept. of Chem. FRIEDEN, E. Prof. FISHER, J. R. Prof. GEORGIA (Ga.) Athens, Univ. of Georgia, Coll. of Arts & Sci., Dept. of Zool. * BRYAN, J. H. D. Prof. * COWARD, S. J. Assoc. Prof. * LINDSAY, D. T. Assoc. Prof. * MATTINGLY, Miss E. Asst. Prof. Dept. of Botany * FULLER, M. S. Prof., Head * HINDMAN, J. L. Assoc. Prof. * KOCHERT, G. Asst. Prof. * FISHER, D. B. Asst. Prof. Div. of Biol. Sci., Electr. Micr. Lab. * HUMPHREYS, W. J. Prof. Atlanta, Emory Univ., Dept. of Anat. OSTEEN, W. K. Prof. Dept. of Biol. * CLEMENT, A. C. Prof. * HUMPHRIES, A. A.. Jr. Prof. * HUNT, E. L. Prof. * ELMER, W. A. Asst. Prof. Atlanta, U.S. Publ. Health Serv., Natl. Communic. Disease Center, Mycol. Sect. LI, Mrs. Yu-Ying FU Res. Chem. Augusta, Med. Coll. of Georgia, Dept. of Obstet. and Gynecol. * MARTIN, C. B., Jr. Assoc. Prof. HAWAn Honolulu, Univ. of Hawaii, School of Med., Dept. of Anat. * DE FEO. V. J. Prof. * NOYES, R. W. Prof. * YANAGIMACHI, R. Asst. Prof. * DIAMOND, M. Assoc. Prof. Pacific Biomed. Research Center * ARNOLD, J. M. Assoc. Prof. Cytol. * KANE. R. E. Asst. Dir. * HADFIELD. M. G. Asst. Prof. Cytol. Dept. of Botany * SMITH, C. W. Asst. Prof. 197 U.S.A. (Hawaii) U.S.A. (Ind.) Harold L. Lyon Arboretum and Horticult. Dept. * SAGAWA, Y. Prof., Dir. Fac. of Arts & Sci. and Grad. Div., Dept. of Zool. CHENG, Th. C. Assoc. Prof. DAVIS, L. V. Asst. Prof. HALEY, S. R. Asst. Prof. IDAHO (Ida.) Moscow, Univ. of Idaho, Dept. of Biol. Sci. * ROBERTS. L. W. Prof, of Bot. ILLINOIS (lU.) Argonne, Argonne Natl. Lab., Div. of Biol, and Med. Research * TAHMISIAN, T. N. Chairman * STEARNER, Miss S. P. Assoc. Biol. Carbondalc, Southern Illinois Univ., Dept. of Physiol. * FOOTE, Mrs. F. MARTINDALE Chicago, Chicago Coll. of Osteopathy, Dept. of Physiol, and Pharmacol. * KELSO, A. F. Chairman Chicago, De Paul Univ., Dept. of Biol. Sci. * THOMMES. R. C. Prof., Chairman * McWHINNIE, Miss D. J. Asst. Prof. * WOODS, J. E. Asst. Prof. Chicago, Loyola Univ., Dept. of Biol. * GOLDIE, M. Asst. Prof. * SPIROFF, B. E. N. Asst. Prof. School of Dentistry, Dept. of Oral Pathol. * TOTO, P. D. Prof. * BODMAN, Sister M. C. Visit. Prof. Chicago, Univ. of Chicago, Div. of Biol. Sci., Dept. of Anat. * SINGER. R. Prof. * KOLLAR, E. J. Asst. Prof. Dept. of Biol., Interdept. Training Program in Developm. Biol. * MOSCONA, A. A. Prof.. Program Dir. * GOLDWASSER, E. Prof., Program Co-Dir. (Biochem.) * PRICE, Miss D. Prof. (Emer.) * BAKER, W. K. Prof. * COHEN, M. H. Prof. (Phys. and Mathem. Biol. * DORFMAN, A. Prof. (Pediat. and Biochem.) * FITCH, F. W. Prof. (Pathol.) * HASELKORN, R. Prof. (Biophys.) * KIRSTEN, W. H. Prof. (Pathol. and Pediat.) * MATHEWS, M. B. Prof. (Pediat.) * SHANKLIN, D. R. Prof. (Obstet., Gynecol, and Pathol.) * SWIFT, H. H. Prof. * WOOL, I. G. Prof. (Physiol. and Biochem.) * HUBBY, J. L. Assoc. Prof. * OVERTON. Mrs. J. H. Assoc. Prof. * RAWLEY, D. A. Assoc. Prof. (Pathol.) * FISCHMAN, D. A. Asst. Prof. * KOLLAR, E. Asst. Prof. (Anat.) * GARBER (BILSKY), Mrs. B. B. Res. Assoc. * MOSCONA, Mrs. M. H. Res. Assoc. * MUNROE, M. H. Instr. Chicago, Univ. of Illinois, Coll. of Med., Dept. of Anat. * SCHMIDT, A. J. Prof. * LaVELLE, A. Prof. * MacRAE, Mrs. E. J. KRUGELIS Prof. * VAN ALTEN. P. J. Assoc. Prof. * LIEM, K. F. Assoc. Prof. * REYNOLDS (KING), Mrs. W. A. * LaVELLE (WILSON), Mrs. F. W. * KERNIS, M. M. Asst. Prof. Dept. of Pathol. * STERN, K. Prof. Dept. of Biol. Sci. VAN VALEN, Ph. Asst. Prof. Chicago, Wright Coll., Dept. of Biol. * VENEZIANO, P. P. Asst. Prof. DeKalb, Northern Illinois Univ., Dept. of Biol. Sci. * NORSTOG, K. Prof. * PRAHLAD. K. V. Assoc. Prof. Evanston, Northwestern Univ., Dept. of Biol. Sci. RULON, G. O. Assoc. Prof. GOLDBERG, E. Asst. Prof. Urbana, Univ. of Illinois, School of Life Sci., Dept. of Entomol. * HORSFALL, W. R. Prof. Dept. of Zool. ADAMSTONE. F. B. Prof. (Emer.) * WATTERSON, R. L. Prof. * NANNEY, D. L. Prof. * DAVENPORT, R. Asst. Prof. * BROWN, E. H. Asst. Prof. * WHITT, G. S. Asst. Prof. * STOCUM, D. L. Asst. Prof. INDIANA (Ind.) Bloomington, Indiana Univ., Dept. of Zool. TORREY, T. W. Prof., Head BRIGGS, R. W. Prof. HUMPHREY, R. R. Prof. (Emer.) CROWELL, P. S. Prof. HENNEN, Miss S. Postdoct. Fellow * SCHAIBLE, R. H. Crawfordsvillc, Wabash Coll., Dept. of Biol. * HEARSON, L. L. Asst. Prof. Lafayette, Purdue Univ., School of Agric, Dept. of Anim. Sci., Herrick Labs. * ALLISTON. C. W. Assoc. Prof. Dept. of Biol. Sci. * ALTMAN, J. Prof. JAFFE, L. F. Prof. * VANABLE, J. W., Jr. Asst. Prof. WHITE, R. H. Asst. Prof. Notre Dame, Univ. of Notre Dame, Coll. of Sci., Dept. of Biol. * TWEEDELL. K. S. Prof., Dir. 198 U.S. A. (Ind.) U.S.A. (Md.) * BENDER. H. A. Prof. * BROWN. J. A. M. Asst. Prof. * CRAIG. G. B. IOWA (la.) Ames, Iowa State Univ., Dept. of Zool. and Entomol. * BAKER. J. R. Asst. Prof. Iowa City, Univ. of Iowa. Coll. of Dentistry, Dept. of Oral Biol. * JACOBS. R. M. * KOCHHAR. D. M. Asst. Prof. Coll. of Med.. Dept. of Anat. * OWERS. N. O. Asst. Prof. * KOCHHAR, D .M. Asst. Prof. Dept. of Zool. * KOLLROS. J. J. Prof.. Chairman * BEAMS. H. W. Prof. * KESSEL. R. G. Prof. * WILLIAMS. N. E. Prof. * MILKMAN. R. D. Prof. * SPAZIANI, E. Prof. * FRANKEL, J. Assoc. Prof. * MOHLER, J. D. Assoc. Prof. * BOVBJERG (BLANCHARD). Mrs. A. M. Res. Assoc. KANSAS (Kans.) Lawrence, Univ. of Kansas, Dept. of Zool. WYTTENBACH. C. R. KENTUCKY (Ky.) Lexington, Univ. of Kentucky, School of Dentistry, Dept. of Oral Biol. SCHWEISTHAL, M. R. Assoc. Prof. Medical Center. Depts. of Microbiol, and Biochem. * MODAK. S. P. Res. Assoc. * BOLLUM. F. J. * SISKEN, J. * DONNELLY. Miss G. * KARASAKI. S. * TRAURIG. H. Louisville, Univ. of Louisville, School of Med.. Dept. of Anat. LONGLEY. J. B. Prof., Chairman DWORNIK. J. J. Asst. Prof. LOUISIANA (La.) Belle Chasse, Tulane Univ., F. Edward Hebert Center, Dept. of Anat.. Lab. of Developm. Biol. ROSE. S. M. Prof. Covington, Tulane Univ., Delta Region. Primate Research Center * CLEWE. Th. H. * FRANKLIN, L. E. New Orleans, Louisiana State Univ., Schools of Med. and Dentistry, Dept. of Anat. * SKALKO, R. G. Assoc. Prof. * GASSER. R. F. Asst. Prof. * WEIDMAN. Th. A. Asst. Prof. Dept. of Biol. * HEYN. A. N. J. Prof. New Orleans, Loyola. Univ., Dept. of Biol. Sci. * LESSEPS, R. J. S.J. Asst. Prof. New Orleans, Tulane Univ., Dept. of Biol. * VOLPE. E. P. Prof., Chairman * McKINNELL, R. G. Prof. * MIZELL, M. Assoc. Prof. * RANGA RAO. K. Res. Assoc. MAINE (Me.) Bar Harbor, The Jackson Lab. GREEN, E. L. Dir. * SAWIN. P. B. Sen. Staff Sclent. (Emer.) * HUMMEL, Miss K. P. Sen. Staff Scient. * GREEN. Mrs. M. C. Sen. Staff Scient. * STEVENS. L. C. Sen. Staff Scient. * WAYMOUTH. Miss C. Sen. Staff Scient. * WHITTEN, W. K. Sen. Staff Scient. Brunswick, Bowdoin Coll.. Dept. of Biol. * MOULTON, J. M. Prof. Orono, Univ. of Maine, Dept. of Zool. * MUN. A. M. Assoc. Prof. * HAYNES, J. F. Walpole, Univ. of Maine, Ira C. Darling Center for Research, Marine Lab. * DEAN. D. Prof.. Dir. * MAZURKIEWICZ, M. Res. Assoc. * NOYES, G. S. Predoct. Stud. MARYLAND (Md.) Baltimore, Carnegie Inst, of Washington, Dept. of Embryol. * EBERT. J. D. Prof., Dir. * BOVING, B. G. Staff Member * BROWN. D. D. Staff Member * DAWID, I. B. Staff Member * DeHAAN, R. L. Staff Member * FAMBROUGH, D. M., Jr. Staff Member * RAMSEY, Miss E. M. Staff Member * REEDER, R. H. Staff Member * DONNER, M. W. Visit. Invest. * GAGE. L. P. Fellow * HAY. R. J. Asst. Invest. * MISENHIMER, H. R. Fellow * O'RAHILLY. R. Fellow * ROEDER, R. G. Fellow * SUZUKI. Y. Fellow * SWANSON, R. F. Fellow * YOSHIKAWA-FUKADA. Mrs. M. Fellow Baltimore, Goucher Coll., Dept. of Biol. MOMENT, G. B. Prof. Baltimore, Johns Hopkins Univ., School of Hygiene and Publ. Health, Div. of Popul. Dynamics * BIGGERS. J. D. Prof. * SCHUETZ. A. W. Asst. Prof. * STERN. S. Asst. Prof. School of Med.. Dept. of Anat. RAFFERTY. K. A.. Jr. Assoc. Prof. Dept. of Gynecol, and Obstet. * WHARTON. L. R., Jr. Asst. Prof. Dept. of Neurol. * DRACHMAN. D. B. Assoc. Prof. Dept. of Biol. * WILLIER. B. H. Prof. (Emer.) * EBERT, J. D. Hon. Prof. 199 U.S.A. (Md.) U.S.A. (Mass.) * DeHAAN, R. L. Hon. Assoc. Prof. * CEBRA, J. J. Assoc. Prof. * HUANG, Ru-chih Asst. Prof. * SMITH, K. D. Asst. Prof. * BROWN, D. D. Hon. Asst. Prof. * SOFER, W. H. Postdoct. Fellow Dept. of Biophys. JACOBSON, M. Baltimore, Univ. of Maryland, Dental School, Dept. of Histol. and Embryol. FISCHLSCHWEIGER, W. SISCA, R. Bethesda, Natl. Inst, of Arthritis and Metabol. Diseases * PARK, Miss H. D. Res. Biol. Bethesda, Natl. Insts. of Health, Natl. Cancer Inst., Lab. of Biol. * ANDERSON, P. N. Res. Assoc. Inst, of Child Health and Human Developm., Lab. of Biomed. Sci. * ROBINSON, J. C. Chief Developm. Biol. Branch * PIATIGORSKY, J. Extramural Research Programs * WATERMAN, A. J. Prof. Natl. Inst, of Dental Research, Extramural Programs HISAOKA, K. K. Chief Oral-Facial Growth 6 Developm. Program Natl. Inst, of Neurol. Diseases and Stroke, Sect, on Exper. Embryol., Ophthalmol. Branch * COULOMBRE, A. J. Head * COULOMBRE (LACY), Mrs. J. L. * LEDERMAN, R. J. Res. Assoc. College Park, Univ. of Maryland, Coll. of Arts and Sci., Dept. of Zool. * IMBERSKI, R. B. Asst. Prof. MASSACHUSETTS (Mass.) Amherst, Amherst Coll., Dept. of Biol. * SCHOTTfi, O. E. Prof. (Emer.) * ELLIS, C. H., Jr. Asst. Prof. WALLACE, H. Asst. Prof. Amherst, Univ. of Massachusetts, Dept. of Forestry & Wildlife Biol. WETHERBEE, D. K. Assoc. Prof. Boston, Boston Univ., School of Med., HENRIKSON, R. C. Res. Instr. Dept. of Anat. * PETERS, A. Prof., Chairman * IFFT, J. D. Assoc. Prof. * VAUGHN, J. E. Asst. Prof. * HINDS, J. W. Asst. Prof. Boston, Harvard Med. School, Dept. of Anat. HAY, Miss E. D. Assoc. Prof. Children's Hosp. Med. Center WITTENBORG, M. H. Assoc. Clin. Prof. (Radiol.) New England Deaconess Hosp., Cancer Research Inst., Dept. of Biol. Chem. * KNOX, W. E. Res. Assoc. * GREENGARD, O. Res. Assoc. Dept. of Pathol. SHEA, S. M. Assoc. Boston, Massachusetts Gen. Hosp., Developm. Biol. Lab. * TRELSTAD, R. L. Dept. of Neurol. WOLPOW, E. R. Resident DeLONG, G. R. Resident Dept. of Surgery * GRILLO, H. C. Assoc. Clin. Prof. Boston, Tufts Univ. School of Med., Dept. of Dermatol. HASHIMOTO, K. Asst. Prof. Dept. of Physiol. KETCHEL, M. M. Assoc. Prof. GALASSI, L. Res. Fellow HADDAD, V. Res. Fellow Cambridge, Harvard Univ., Fac. of Arts & Sci., Dept. of Biol. HOADLEY, L. Prof. (Emer.) PORTER, K. R. Prof. KAFATOS, F. C. Asst. Prof. * BURNSIDE, Miss M. B. Postdoct. Fellow Cambridge, Mass. Inst, of Technol., Dept. of Biol. BELL, E. Prof. Chestnut Hill, Boston Coll., Dept. of Biol. FIMIAN, W. J., Jr. Assoc. Prof. Northampton, Smith Coll., Dept. of Biol. Sci. * LUCKENBILL, Miss L. M. Asst. Prof. Shrewsbury, Worcester Found, for Exper. Biol. CHANG, M. C. Sen. Scient. * HARPER, M. J. K. Sen. Scient. * HUNT, Miss D. M. Staff Scient. * McGAUGHEY. R. W. Staff Scient. * IWAMATSU, T. Lect. * BARTKE. A. Postdoct. Fellow South Hadley, Mount Holyoke Coll., Dept. of Biol. Sci.. Clapp Lab. * STEIN, K. F. Prof. (Emer.) * KALTENBACH, Mrs. J. COUFFER Assoc. Prof. * ESCHENBERG, Miss K. M. Assoc. Prof. Waltham, Brandeis Univ., Grad. School of Arts & Sci., Grad. Dept. of Biochem. LOOMIS, W. F. Prof. SATO, G. Assoc. Prof. MASTERS, C. J. Visit. Assoc. Prof. Dept. of Biol. * ZWILLING, E. Prof. * SUSSMAN, M. Prof. * SCHIFF, J. A. Prof. * KLEIN, A. O. Assoc. Prof.. Chairman * FULTON, C. M. Assoc. Prof. * OBERLANDER, H. Asst. Prof. * SUSSMAN, Mrs. R. B. ROTMAN Res. Assoc. WeUesley, Wellesley Coll., Dept. of Biol. Sci., Lab. of Cell. Biol. * PADYKULA, Miss H. A. Prof. * GAUTHIER, Miss G. F. Asst. Prof. * TAYLOR, Miss J. M. 200 U.S.A. (Mass.) U.S.A. (N.H.) Woods Hole, Marine Biol. Lab. * MARSLAND, D. A. Res. Prof. * BARTH. L. G. Prof. * BARTH. Mrs. L. J. MICHIGAN (Mich.) Ann Arbor, Univ. of Michigan, Med. School, Dept. of Anat. PATTEN. B. M. Prof. (Emer.) CONKLIN, J. L. Assoc. Prof. BURDI. A. R. Asst. Prof. CARLSON, B. M. Asst. Prof. BEAUDOIN, A. R. Dept. of Obstet. and Gynecol., Center for Research in Reprod. Biol. * BEHRMAN, S. J. Prof., Dir. * MENGE, A. C. Assoc. Prof. * NAKABAYASHI, N. T. Res. Assoc. Dept. of Botany SUSSMAN, A. S. Prof., Chairman SMITH, J. G. Grad. Stud. Dept. of Zool. * KAUFMANN. B. P. Prof. (Emer.) * FOSTER, M. Prof. * GAY. Miss H. Prof. * KEMP. N. E. Prof. * NACE. G. W. Prof. * RIZKI. T. M. Prof. * SHAPPIRIO, D. G. Prof. * GATHER. J. N. Assoc. Prof. FRYE, B. E. Assoc. Prof. * RICHARDS. Mrs. C. M. Res. Assoc. Detroit, Wayne State Univ., School of Med.. Dept. of Anat. * MEYER. D. B. East Lansing, Michigan State Univ., Coll. of Human Med., Dept. of Anat. * WALKER. B. E. Prof.. Chairman * TABAN. Ch. H. Assoc. Prof. THOMAS. J. B. Assoc. Prof. Dept. of Zool. * THORNTON, C S. Prof., Chairman FENNELL, R. A. Prof. * SHAVER. }. R. Prof. BAND. R. N. Assoc. Prof. * RIVERA, Miss E. M. Assoc. Prof. * OZAKI, H. Asst. Prof. * BARCH. S. H. Res. Assoc. Rochester, Oakland Univ., Dept. of Biol. * BUTTERWORTH, F. M. Asst. Prof. MINNESOTA (Minn.) Minneapolis, Univ. of Minnesota, School of Med., Dept. of Anat. LAZAROW, A. Head WELLS, L. J. Prof. FELTS, W. J. L. Assoc. Prof. HEGGESTAD, C. B. Assoc. Prof. SMITHBERG, M. Assoc. Prof. Dept. of Microbiol. * DWORKIN, M. Prof. Coll. of Biol. Sci., Dept. of Zool. * SPRATT. N. T., Jr. Prof. RICHARDS, G. Prof. * HUVER, C. W. Assoc. Prof. * KERR, N. S. Assoc. Prof. * SHERIDAN, J. D. Asst. Prof. * GILBERTSON. D. E. Asst. Prof. Dept. of Botany * STETLER, D. A. Ass. Prof. Morris, Univ. of Minnesota, Div. of Sci. & Mathem. BIRGE, W. J. Assoc. Prof. Northfield, Carleton Coll., Dept. of Biol. SHOGER, R. L. Assoc. Prof. St. Paul, Univ. of Minnesota, Dept. of Entomol., Fish. & Wildlife * BROOKS, Miss M. A. Assoc. Prof. MISSISSIPPI (Miss.) Jackson, Univ. of Missisippi, Med. Center, Dept. of Pharmacol. KLEIN, R. L. Prof. MISSOURI (Mo.) Columbia, Univ. of Missouri, School of Med.. Dept. of Anat. * LEESON. C. R. Prof.. Chairman * DECKER, J. D. Asst. Prof. St. Louis, St. Louis Univ., Dept. of Biol. * MANNER, H. W. Prof. St. Louis, Washington Univ., School of Med., Dept. of Anat. * COWAN, W. M. Prof., Chairman Dept. of Biol. * HAMBURGER, V. Prof. * MOOG, Miss F. Prof. * LEVI-MONTALCINI, Miss R. Prof. * NARAYANAN, C. H. Res. Assoc. MONTANA (Mont.) Bozeman, Montana State Univ., Dept. of Zool. -Entomol. * VAN HORN (NEUMANN). Mrs. S. A. Assoc. Prof. * DORGAN, W. J. Asst. Prof. NEBRASKA (Neb.) Omaha, Creighton Univ., School of Med.. Dept. of Anat. * DOSSEL, W. E. Prof., Act. Chairman * THOMAS, R. I. Dept. of Biol. * SCHLESINGER, A. B. Prof., Chairman NEVADA (Ncv.) Reno, Univ. of Nevada, Dept. of Biol. * TIBBITTS, F. D. Assoc. Prof. NEW HAMPSHIRE (N.H.) Durham, Univ. of New Hampshire, Biochem. Dept. * STEWART. J. A. Asst. Prof. Plant Sci. Dept. * LOY. J. B. Asst. Prof. Dept. of Zool. * FORET, J. E. Asst. Prof. Hanover, Dartmouth Med. School, Dept. of Anat.-Cytol. * FERM, V. H. Prof. (Embryol.) Dept. of Pathol. * BENIRSCHKE, K. Prof. * MARGOLIS, G. Prof. MARIN-PADILLA, M. Assoc. Prof. 201 U.S.A. (N.H.) U.S.A. (N.Y.) * BRINCK-JOHNSEN, T. Asst. Prof. * DE HOYOS. E. Asst. Prof. Hanover, Dartmouth Coll., Dept. of Biol. Sci. * BALLARD, W. W. Prof. * SPIEGEL, M. Prof. * DeMAGGIO, A. E. Assoc. Prof. * SPIEGEL. Mrs. E. SCLUFER * ROOS. Th. B. Assoc. Prof. NEW JERSEY (N.J.) East Orange, Upsala Coll., Biol. Dept. * HEIN, Miss R. G. Prof. Newark, Rutgers Univ., Newark Coll. of Arts & Sci.. Dept. of Zool. * SONDHI. K. C. Assoc. Prof. * MILLER. T. J. Asst. Prof. Nutley, Hoffman-La Roche Inc., Research Div., Dept. of Exper. Pathol, and Toxicol., Teratol. Sect. * HOAR, R. M. Dir. Princeton, Princeton Univ., Dept. of Biol. * BUTLER, E. G. Prof. (Emer.) * BONNER, J. T. Prof.. Chairman * FANKHAUSER, G. Prof. * STEINBERG, M. S. Prof. * JACOBS, W. P. Prof. Railway, Merck Inst, for Therapeutic Research, Physiol. Dept. * GWATKIN, R. B. L. Asst. Dir. * ANDERSEN, O. F. Res. Biol. Tcancck, Fairleigh Dickinson Univ., Dept. of Biol. LIEDKE, Mrs. K. B. Assoc. Prof. Trenton, Rider Coll., Fac. of Lib. Arts & Sci., Dept. of Biol. MAYER, T. C. Assoc. Prof. NEW MEXICO (N.Mex.) Albuquerque, The Univ. of New Mexico, School of Med., Dept. of Anat. * KELLY, R. O. Instr. NEW YORK (N.Y.) Albany, State Univ. of New York, Dept. of Biol. Sci. * ALLEN, R. D. Prof., Chairman * SAUNDERS, J. W. Prof. * MASCARENHAS, J. P. Assoc. Prof. * RIKMENSPOEL, R. Assoc. Prof. * LESH, Miss G. E. Asst. Prof. * ROLLINS, E. A. Asst. Prof. Brockport, State Univ. Coll., Dept. of Biol. Sci. * THOMPSON. R. P. Assoc. Prof. Buffalo, Roswell Park Mem. Inst. * BRUNST. V. V. Sen. Cane. Res. Scient. Dept. of Exper. Pathol. WEISS, L. Prof. * MASLOW, D. E. Cane. Res. Scient. Buffalo, State Univ. of New York. Dept. of Anat. * JONES, O. P. Prof.. Head Dept. of Biol. FLICKINGER, R. A. Prof. Ithaca, Cornell Univ.. New York State Coll. of Agric, Dept. of Poultry Sci. * BLOOM, S. E. Asst. Prof. THOMPSON, J. N. Res. Assoc. Lab. of Chem. Embryol. * ROMANOFF, A. L. Prof. (Emer.) Ithaca, Cornell Univ.. Div. of Biol. Sci. ADELMANN. H. B. Prof. (Emer.) GILBERT. P. W. Prof. WIMSATT, W. A. Prof. ANDERSON, J. M. Prof. BLACKLER, A. W. Prof. MAURER, M. L. Stud. Dept. of Entomol. and Limnol. * KRAMER, J. P. Assoc. Prof. Ithaca, Cornell Univ., Vet. Coll., Dept. of Anat., Dom. Anim. Embryo Slide Collect. * EVANS, H. E. Prof. * SACK, W. O. Assoc. Prof. * BRYDEN. M. M. Instr. Dept. of Large Anim. Med.. Equine Research Program * SCHRYVER, H. F. Assoc. Prof. New York, Brooklyn Botanic Garden * CHENEY. R. H. Prof. (Emer.). Hon. Res. Assoc. New York, Brooklyn Coll.. Dept. of Biol. * COLLIER. J. R. Prof. * MADERSON. P. F. A. Asst. Prof. * SALTHE. S. N. New York, The City Univ. of New York, The City Coll., Dept. of Biol. * HAMBURG, M. Assoc. Prof. Hunter Coll., Dept. of Biol. Sci. * LYSER (SHOUBY). Mrs. K. M. Assoc. Prof. New York, Columbia Univ.. Coll. of Phys. & Surgeons. Dept. of Anat. SHEN. S. C. MURRAY, Mrs. M. R. Dept. of Ophthalmol. * HOLLYFIELD, J. G. Asst. Prof. Dept. of Radiol., Radiobiol. Res. Lab. * RUGH, R. Assoc. Prof. New York, Columbia Univ., Manhattanville Inst., Dept. of Biophys. DAVID, G. B. Head New York, Cornell Univ., Med. Coll., Dept. of Anat. SIRLIN, J. L. Assoc. Prof. STINSON, B. D. Asst. Prof. BENNETT, Mrs. D. Asst. Prof. GEYER (DUSZYr5§KA), Mrs. I. Res. Assoc. Dept. of Pathol. HAGSTROM, J. W. C Asst. Prof. GORHAM. L. W. Visit. Fellow New York, Fordham Univ., Dept. of Biol. LUDWIG, D. Prof. (Physiol.) SALA, M. Prof. 202 U.S.A. (N.Y.) U.S.A. (N.C.) New York, Lenox Hill Hosp., Pediat. Cardiac Serv. CUCCI. C. E. Chief New York, Long Island Univ., Richard L. Conolly Coll. BIEBER. S. New York, The Mount Sinai Hosp., Ophthalmol. Dept. * ZINN. K. M. New York, New York Blood Center * KAIGHN, M. E. Assoc. Invest. New York, Nev/ York Univ., Grad. School of Arts & Sci., Biol. Dept. * BRICK. I. Assoc. Prof. * SCHMATOLLA. E. Res. Assoc. School of Med., Dept. of Otolaryngol. RUBEN, R. J. Asst. Prof. New York, Queens Coll., Dept. of Biol. * COLWIN, A. L. Prof. * COLWIN, Mrs. L. HUNTER Prof. New York, Rockefeller Univ. * DAVIDSON, E. H. * HOUGH (RAYMOND), Mrs. B. R. Guest Invest. Lab. of Developm. Biol. WEISS, P. A. Prof. The Population Council, Biomed. Div. * SEGAL, S. J. Dir. * WITSCHI, E. Prof. (Emer.) Sen. Scient. New York, State Univ. of New York, Downstate Med. Center, Dept. of Pathol. * HERMAN, L. Prof. * KAUFFMAN, Miss S. Assoc. Prof. New York, Yeshiva Univ., Albert Einstein Coll. of Med., Dept. of Anat. ETKIN. W. Res. Assoc. Prof. Dept. of Genet. * WAELSCH, Mrs. S. GLUECKSOHN Prof. * MOSER, Mrs. G. C. Assoc. * ROSENBERG, Miss M. R. Asst. Prof. * POLLARD, D. R. Res. Assoc. Dept. of Physiol. * MORRILL, G. A. Asst. Prof. * KOSTELLOW. A. B. Asst. Prof. New York, Yeshiva Univ., Dept. of Biol. * WISCHNITZER, S. Prof. Oswego, State Univ. Coll., Dept. of Biol. * HARRISON, J. R. Prof., Chairman * SEAGO, J. L. Asst. Prof. Rochester, Univ. of Rochester, Coll. of Arts & Sci.. Dept. of Biol. HOLTFRETER. J. K. F. Prof. CASPARI, E. W. Prof. * MUCHMORE, W. B. Assoc. Prof. * EICHER, Miss E. M. Res. Assoc. LEHMANN, R. Res. Assoc. School of Med. and Dentistry. Dept. of Physiol. LOCKSHIN, R. A. Asst. Prof. Schenectady, Union Coll., Dept. of Biol. Sci. * RAPPAPORT. R.. Jr. Prof. * BUTZEL. H. M.. Jr. Prof. * URBAN. P. Asst. Prof. Springvillc, Roswell Park Mem. Inst., Springville Labs. JUSTUS, J. T. Sen. Cane. Res. Scient. CAIRNS, J. M. Assoc. Cane. Res. Scient. Stony Brook, State Univ. of New York. Dept. of Biol. Sci. * JONES. R. F. Chairman MERRIAM. R. W. Assoc. Prof. * FOWLER. J. A. Asst. Prof. Syracuse, State Univ. of New York, Med. School, Dept. of Anat. * ARMSTRONG, P. B. Prof. * YNTEMA, C. L. Prof. * HAMMOND, W. S. Assoc. Prof. * MITCHELL, J. T. Asst. Prof. Dept. of Urol. * ARGYRIS (FRANKENHUIS). Mrs. B. Assoc. Prof. Dept. of Zool. * ARGYRIS, Th. S. Prof. * KAHN, A. J. Asst. Prof. Tarrytown, Marymount Coll., Dept. of Biol. * WOLSKY, A. Prof. Troy, Rensselaer Polytechn. Inst., Dept. of Biol. * AUCLAIR, W. Assoc. Prof. NORTH CAROLINA (N.C.) Beaufort, Duke Univ., Marine Lab. BOOKHOUT, C. G. Prof., Dir. COSTLOW, J. D., Jr. Asst. Prof. Burlington, Caroline Biol. Supply Co., Dept. of Cytogenet. & Developm. Biol. * KIRCHEN, R. V. Head Chapel Hill, Univ. of N. Carolina, Dept. of Botany * SCOTT, T. K. Prof. Dept. of Zool. COSTELLO. D. P. Kenan Prof. LEHMAN. H. E. Prof. HENLEY, Miss C. Res. Assoc. Durham, Duke Univ., Med. Center, Dept. of Anat. * DUKE, K. L. Assoc. Prof. Dept. of Zool. * HORN, E. C. Prof., Chairman * GREGG, J. R. Prof. * COUNCE (NICKLAS), Mrs. S. J. Greenville, East Carolina Univ., Dept. of Biol. * LAWRENCE, I. E., Jr. Assoc. Prof. SEHGAL, P. P. Raleigh, Dorothea Dix Hosp., Dept. of Mental Health, Neuroembryol. Lab. * OPPENHEIM, R. Res. Scient. Psychol. Lab. * GOTTLIEB, G. Res. Scient. 203 U.S.A. (N.C.) U.S.A. (Pa.) Raleigh, N. Carolina State Univ., Fac. of Agric. & Life Sci., Dept. of Poultry Sci. * DONALDSON. W. E. Prof. Dept. of Anim. Sci. * ULBERG, L. C. Prof. * ROBISON, O. W. Assoc. Prof. * TANNER, E. A. Res. Assoc. Dept. of Genet. * GROSCH, D. S. Dept. of Zool. * LYTLE, Ch. F. Prof. NORTH DAKOTA (N.D.) Fargo, State Univ. Station, USDA Metabol. & Radiat. Res. Lab. * ADAMS, T. S. Res. Entomol. * LEOPOLD, R. A. Res. Entomol. OHIO Cincinnati, Univ. of Cincinnati, Coll. of Med., Dept. of Pediat., Childrens Hosp. Res. Found., Div. of Teratol. WARKANY, J. Prof. KALTER, H. Assoc. Prof. Cincinnati, Xavier Univ., Dept. of Biol. PETERS, J. J. Prof., Chairman Cleveland, Case Western Reserve Univ., School of Med., Dept. of Anat. * SINGER, M. Prof. * GASTON, }. D. Asst. Prof. * GRASSO, J. A. Asst. Prof. * LOVE. D. S. Asst. Prof. Dept. of Biol. * LOCKE, M. Prof. * WESTON. J. A. Asst. Prof. Schools of Engin. & Med.. Dept. of Biomed. Engin. * MACKLIN, M. R. Asst. Prof. Columbus, Ohio State Univ.. Coll. of Agric. Dept. of Poultry Sci. * NABER, E. C. Prof. Coll. of Biol. Sci., Dept. of Zool. * TASSAVA. R. A. Asst. Prof. Coll. of Med., Dept. of Anat. * ACKERMAN. G. A. Prof. Coll. of Vet. Med., Dept. of Vet. Anat. * VENZKE, W. G. Prof.. Chairman Dayton, Wright State Univ.. Div. of Sci. and Engin.. Dept. of Biol. * HUBSCHMAN. J. H. Assoc. Prof. * NUSSBAUM. N. S. Assoc. Prof. * FRITZ. H. I. Assoc. Prof. * SEIGER. M. B. Assoc. Prof. Kent, Kent State Univ.. Dept. of Biol. Sci. * STEVENSON. J. ROSS Assoc. Prof. Obcrlin, Oberlin Coll., Dept. of Biol. * BRUMMETT. Miss A. R. Assoc. Prof. Toledo, Med. Coll. of Ohio, Dept. of Anat. * BUCHANAN. G. D. Assoc. Prof. Dept. of Physiol. * BISHOP. D. W. Prof. Toledo, Univ. of Toledo, Dept. of Biol. * LEE, H. H. Asst. Prof. Yellow Springs, Charles F. Kettering Research Labs. * REPORTER, M. C. Invest. * MOLLENHAUER, H. H. Invest. * PANNBACKER, R. G. Staff Scient. * FINE, M. H. Postdoct. Res. Assoc. OKLAHOMA (Okla.) Nonnan, Univ. of Oklahoma, Coll. of Arts & Sci.. Dept. of Zool. * GOFF. R. A. Prof. * MILLS. K. S. Assoc. Prof. * SETO. F. Asst. Prof. Oklahoma City, Univ. of Oklahoma, Med. School. Dept. of Anat. LACHMAN. E. Chairman * LHOTKA. J. F.. Jr. Prof. * ALLISON. J. E. Prof. * COALSON. R. E. Assoc. Prof. * GUMBRECK, L. Assoc. Prof. * McCLURE. T. Instr. Stillwater, Oklahoma State Univ., Dept. of Zool. * JONES, R. W. Prof., Head OREGON (Ore.) Corvallis, Oregon State Univ.. Dept. of Bot. and Plant Pathol. * LEACH, Ch. M. Prof. * TRIONE, E. J. BRANDT, W. H. Assoc. Prof. MAY CHING, T. (Agron. Dept.) Fac. of Sci., Dept. of Biochem. and Biophys. * NEWBURGH, R. W. Prof., Chairman Eugene, Univ. of Oregon, Dept. of Biol. RISLEY, P. L. Prof. GRANT, Ph. Portland, The Reed Inst., Biol. Dept. * RUBEN, L. N. Prof. Portland, Univ. of Oregon, Med. School, Anat. Dept. * GUNBERG, D. L. Prof. PENNSYLVANIA (Pa.) Bryn Mawr, Bryn Mawr Coll., Dept. of Biol. * OPPENHEIMER, Miss J. M. Prof. Haverford, Haverford Coll., Dept. of Biol. LOEWY, A. G. Chairman * FINGER, I. Assoc. Prof. KESSLER, D. Asst. Prof. GREEN, Mrs. E. UFFORD Res. Assoc. NACHMIAS, Mrs. V. THIMANN Res. Assoc. Philadelphia, Inst, for Cane. Research * MINTZ, Miss B. Sen. Member * FREED. J. J. Assoc. Member * DE TERRA (WHITTAKER), Mrs. N. Asst. Member * MEZGER-FREED, Mrs. L. Res. Assoc. 204 U.S.A. (Pa.) U.S.A. (Tenn.) Philadelphia, Pennsylvania Coll. of Pediat. Med. * GIBLEY, Ch. W.. Jr. Acad. Dean Philadelphia, Temple Univ., Dept. of Biol. NIU. M. C. Prof. * HILFER, S. R. Assoc. Prof. * SEARLS. R. L. Assoc. Prof. HILLMAN, Mrs. N. WILLIAMS Philadelphia, Univ. of Pennsylvania, Grad. School of Arts & Sci., Dept. of Biol, and School of Dental Med., Lab. of Histol. & Embryol. * WILDE, C. E., Jr. Prof. * HEROLD, R. C. Assoc. Prof. * PIDDINGTON, R. L. Asst. Prof. * LEVENSON, G. E. Asst. Prof. * HORTON, K. M. Grad. Stud. * TAYLOR, Miss E. L. Grad. Stud. * TEITELMAN (de PINCZUK), Mrs. G. Grad. Stud. * SCHWARTZ, R. J. Grad. Stud. MACARAK, E. J. Grad. Stud. School of Med., Dept. of Anat. HOLTZER, H. Prof. PLATT, J. Prof. FLEXNER, L. B. Prof. LASH, J. W. Asst. Prof. Dept. of Obstet. and Gynecol. * REYNOLDS, S. R. M. Prof. (Emer.) Dept. of Pediat. WILLIAMS, Mrs. M. LYMAN Asst. Prof. School of Vet. Med., Dept. of Anim. Biol. * McDEVITT, D. S. Asst. Prof. Lab. of Reprod. Physiol. * BRINSTER, R. L. Assoc. Prof., Dir. Dept. of Biol. INOUfi, S. Prof. TELFER, W. Prof. GREEN, P. B. Assoc. Prof. * SATO, H. Assoc. Prof. Philadelphia, Wistar Inst. * WHITTAKER, J. R. Assoc. Philadelphia, Woman's Med. Coll. and Hosp. of Pennsylvania, Dept. of Anat. * Di BERARDINO, Miss M. A. Assoc. Prof. * KULANGARA, A. C. Assoc. Prof. Pittsburgh, Allegheny Gen. Hosp., Cell and Radiat. Biol. Labs. * BRAVERMAN, M. H. Assoc. Pittsburgh, Carnegie-Mellon Univ., Dept. of Biol. SPRINGER, Ch. A. Pittsburgh, Mercy Hosp., Dept. of Radiotherapy, Cane. Res. Lab. * KATOH, A. K. Dir. * YOSHIDA, K. Postdoct. Fellow Pittsburgh, Univ. of Pittsburgh, Fac. of Arts and Sci., Dept. of Biol. * PARTANEN. C. R. Prof., Chairman * CARELL, E. F. Assoc. Prof. * GOTTLIEB, F. J. Assoc. Prof. * MELTON, Ch. G., Jr. Asst. Prof. * SHOSTAK, S. Asst. Prof. * SPECTOR, C. Asst. Prof. * GOLDSMITH, Miss M. Asst. Prof. School of Med., Dept. of Anat. and Cell Biol. LANSING, A. I. Chairman * CAUNA, N. Prof. * VINCENT, W. S. Assoc. Prof. * ALLEN, E. R. Asst. Prof. * CAVE, M. D. Asst. Prof. HAYES, R. Asst. Prof. Swarthmorc * BERRILL, N. J. University Park, Pennsylvania State Univ., Coll. of Sci., Dept. of Biol. * DALTON, H. C. Prof. * HIBBARD, E. Assoc. Prof. Div. of Food Sci., Lipids Lab. KINSELLA, J. E. Res. Asst. Dept. of Poultry Sci. BUSS, E. G. Prof. West Point, Merck Inst, for Therapeutic Research * STAPLES, R. E. Head Teratol. & Reprod. Wilkcs-Barre, Wilkes Coll., Dept. of Biol. * OGREN, R. E. RHODE ISLAND (R.L) Providence, Brown Univ., Div. of Biol, and Med. Sci. * CHASE, H. B. Prof. WEISZ, P. B. Prof. * GOSS, R. J. Prof. EDDS, M. v., Jr. Prof. * QUEVEDO, W. C, Jr. Assoc. Prof. * COLEMAN, J. R. Assoc. Prof. * KIMMEL, D. L., Jr. Asst. Prof. SOUTH CAROLINA (S.C.) Charleston, Med. Coll. of S. Carolina, Dept. of Anat. * ADAMS SMITH, W. N. Assoc. Prof. Clcmson, Clemson Univ., Poultry Sci. Dept. * BOONE, M. A. Prof. TENNESSEE (Tenn.) Knoxville, Univ. of Tennessee, Dept. of Zool. and Entomol. * ERASER, R. C. Prof. SHIVERS, C. A. Assoc. Prof. Memphis, Southwestern at Memphis, Dept. of Biol. * AMY, R. L. Prof. Memphis, Univ. of Tennessee, Coll. of Basic Med. Sci., Dept. of Anat. * ROBERTSON, G. G. Prof. * COHN, S. A. Prof. * CORLISS, C. E. Assoc. Prof. * FITZGERALD, L. R. Assoc. Prof. * FEDINEC, A. A. Assoc. Prof. 205 U.S. A. (Term.) Nashville, Vanderbilt Univ., Sch. of Med., Dept. of Obstet. and Gynecol. GOSS, D. A. Prof. GLASSER, S. R. Assoc. Prof. SOUPART, P. Assoc. Prof. ORGEBIN (CRIST), Mrs. M. C. Asst. Prof. Dept. of Biochem. COHEN, S. Oak Ridge, Oak Ridge Natl. Lab., Biol. Div. * YAMADA, T. Prof. * SKINNER, D. M. Prof. * ALBRIGHT, ]. F. * BORSTEL, R. C. von * DUMONT. J. N. * KERR, Miss M. S. Postdoct. Fellow * MAKINODAN, T. * MILLER, O. L., Jr. * PAPACONSTANTINOU, J. * POPP. R. A. * WALLACE, R. A. * ACHAZI, R. K. * REESE. D. H. Grad. Stud. * GRAHAM, D. E. TEXAS (Tex.) Austin, Univ. of Texas, Botany Dept. * BLOCH, D. P. Prof. Grad. School, Cell Research Inst. * WHALEY, W. G. Prof., Dir. * BLOCH, D. P. Prof. * DAUWALDER (RICHARDS). Mrs. M. Res. Scient. * LEFFINGWELL, T. P. Res. Scient. * KEPHART, Miss J. E. Res. Assoc. Dept. of Zool. * FORREST, H. S. Prof. * JACOBSON, A. G. Prof. * PAVAN. C. Prof. * HAMILTON, T. H.Assoc. Prof. BRONSON, F. H. Assoc. Prof. * BARTH, R. H., Jr. Asst. Prof. * COLLINS, M. F. Asst. Prof. * LAIRD, C D. Asst. Prof. * FULLILOVE. Miss S. L. Res. Assoc. Fort Worth, Texas Wesleyan Coll., Div. of Sci. STREETT, J. C. Chairman Galveston, Univ. of Texas, Med. Branch, Dept. of Anat. * HILD, W. J. Prof., Chairman * DUNCAN, D. Prof. (Emer.) * SINCLAIR, J. G. Prof. (Emer.) * BLOUNT, R. F. Prof. * KISCHER, C. WARD Asst. Prof. * ROSS, L. M. Asst. Prof. Houston, Baylor Univ., Coll. of Med., Dept. of Anat. ZIMMERMAN, A. A. Prof. (Emer.) Houston, Rice Univ., Dept. of Biol. SUBTELNY. S. Prof. U.S.A. (Wash.) Houston, Univ. of Texas, Dental Branch, Dept. of Anat. TAYLOR, A. C. Pof. (Histol.) San Antonio, Southwest Found, for Research and Education, Div. of Biol., Growth, and Developm. * AXELROD, L. R. Dir. * HENDRICKX. A. G. Chief Sect, of Erabryol. San Antonio, Univ. of Texas, Med. School, Dept. of Anat. * RENNELS, E. G. Prof., Chairman * McNUTT, C. W. Prof. * BURTON. A. L. Assoc. Prof. * CAMERON. I. L. Assoc. Prof. * WOOD, J. G. Assoc. Prof. UTAH Logan, Utah State Univ., Vet. Sci. Dept. * SHUPE, J. L. Prof. VERMONT (Vt.) Burlington, Univ. of Vermont, Dept. of Zool. * GLADE. R. W. Prof., Chairman * LANDESMAN, R. Asst. Prof. Middlcbury, Middlebury Coll., Dept. of Biol. * GREENWOOD, M. S. Instr. VIRGINIA (Va.) Charlottesville, Univ. of Virginia, School of Med., Dept. of Anat. * LANGMAN, J. Prof., Chairman * DECK, J. D. Assoc. Prof. * ZWAAN, J. Assoc. Prof. * HANAWAY, J. K. Asst. Prof. Biochem. Dept. BRADBUR, C. Asst. Prof. Div. of Reprod. Biol., Dept. of Obstet. and Gynecol. * HAMNER, Ch. Dir. * KILLIE, J. W. Vivarium * SOJKA, N. J. Dir. Dept. of Biol. * BODENSTEIN, D. Prof., Chairman * DENT, J. N. Prof. HAMILTON, H. L. Prof. * KONIGSBERG, I. R. Prof. * WRIGHT, Th. R. F. Assoc. Prof. * DIEHL, F. A. Asst. Prof. Richmond, Univ. of Richmond, Dept. of Biol. * REAMS, W. M., Jr. Assoc. Prof. Williamsburg, Coll. of William and Mary, Dept. of Biol. * BLACK, R. E. Prof. * SIMONS, J. A. Asst. Prof. WASHINGTON (Wash.) Nahcotta, Univ. of Washington, Dept. of Zool., Field Lab. * TARTAR, V. Prof. Pullman, Washington State Univ., Dept. of Anim. Sci., Lab. of Developm. Biol. KOSIN, I. L. Prof. 206 U.S.A. (Wash.) Dept. of Chem. * BROSEMER, R. W. Assoc. Prof. Coll. of Sci. and Arts, Dept. of Zool. * SCHROEDER. P. C. Asst. Prof. Seattle, Univ. of Washington, School of Dentistry, Dept. of Oral Biol. * GORDON, H. P. Asst. Prof. * REDMAN, R. S. Instr. CAHN, Mrs. M. B. Res. Assoc. Coll. of Fisheries, Lab. of Radiat. Ecol. * WELANDER, A. D. Prof. * WADLEY, G. W. Res. Asst. School of Med. * BODEMER, C. W. Dept. of Biol. Struct. BOYDEN, E. A. Prof. (Emer.) ROOSEN-RUNGE, E. C. Prof. BLANDAU, R. J. Dept. of Pediat., Central Lab. for Human Embryol. * SHEPARD, T. H. Prof., Dir. * TANIMURA, T. Sen. Fellow Univ. Hosp. * MOTTET, N. K. Prof. (Pathol.) Dept. of Zool. WHITELEY, A. H. Prof. CAHN, R. D. WEST VIRGINIA (W.Va.) Morgantown, West Virginia Univ., School of Med., Dept. of Anat. * KIMMEL, D. L., Prof., Chairman * REYER, R. W. Prof. McCAFFERTY, R. E. Assoc. Prof. * BERESFORD, W. A. Asst. Prof. Dept. of Biol. * NORMAN, C. Prof. WISCONSIN (Wis.) Madison, Univ. of Wisconsin, Bardeen Med. Labs., Dept. of Anat. Argentina SLAUTTERBACK, D. B. Prof., Chairman * MOSSMAN, H. W. Prof. (Emer.) * MARTIN, A. H. Asst. Prof. * FALLON, J. F. Asst. Prof. * ORSINI, Mrs. M. WARD G. * ANDERSON, J. W. Med. School, McArdle Lab. for Cane. Research * RUSCH, H. P. Prof., Dir. * MUELLER, G. C. Prof. * TEMIN, H. M. Prof. Dept. of Neurol. * KORNGUTH, S. E. Assoc. Prof. Dept. of Genet. FOX, A. S. Prof. HORIKAWA, M. Res. Fellow Dept. of Physiol. Chem. * COHEN, Ph. P. Prof., Chairman * SALLACH, H. J. Assoc. Prof. * KORNGUTH, S. E. Assoc. Prof. Dept. of Radiol. YATVIN, M. B. Asst. Prof. Dept. of Zool. AUERBACH, R. SONNEBORN, D. Assoc. Prof. Milwaukee, Marquette Univ., School of Med., Dept. of Physiol. * RIECK, A. F. Assoc. Prof. Dept. of Biol. * RASCH (MYRBERG) . Mrs. E. M. Prof. * MILLINGTON. W. F. Prof. - MAHOWALD, A. P. Asst. Prof. HENNEN, S. Asst. Prof. UNSWORTH, B. R. Asst. Prof. ALAPATI, K. Assoc. Prof. Milwaukee, Univ. of Wisconsin, Dept. of Zool. WARNER, E. D. Prof., Chairman * PRESS, N. Assoc. Prof. CENTRAL AMERICA JAMAICA Kingston, Univ. of the W. Indies, Fac. of Med., Dept. of Anat. * PERSAUD, T. V. N. Lect. MEXICO Mexico D.F., Ciudad Univ., Inst, de Biol, de la U.N.A.M. LLAMAS, R. Dir. SAMANO BISHOP, Miss A. Mexico D.F., Inst. Nac. de Cardiol., Dept. de Embryol. CRUZ de LOSADA, Mrs. M. V. de la Chief SOUTH AMERICA ARGENTINA Buenos Aires, Fac. de Med., Inst, de Anat. Gen. y Embriol. * ADLER, R. La Plata, La Plata Univ., Fac. de Cienc. Med., Cat. "B" de Embriol., Biol, e Histol. ECHAVE LLANOS, J. M. Prof., Head GOMEZ DUMM, C. L. Jefe de Trabajos P. DADONE, L. A. Jefe de Seccion Mendoza, Univ. Nac. de Cuyo, Fac. de Cienc. Med., Inst, de Patol. Gen. y Exper. BADE, E. G. Jefe de Seccion Tucuman, Univ. Nac. de Tucuman, Fac. de Bioquim., Quim. y Farm., Inst, de Biol. * BARBIERI, F. D. Prof., Dir. * LEGNAME, A. H. Asst. Prof. * LEGNAME, C. R. Asst. Prof. 207 Argentina India * SALOMON de LEGNAME, Mrs. H. Instr. * VALDEZ de MORENO, Mrs. C. L. * RAISMAN, J. S. Instr. * DEL RIO, A. G. Instr. * BUDEGUER de ATENOR, Mrs. M. S. Instr. * MARIANO, Miss M. I. Guest worker BRAZIL Belo Horizonte, Univ. Fed. de Minas Gerais, Inst, de Cienc. Biol., Dept. de Biol. Geral * SCHREIBER, G. Prof., Chief * SALLES, J. M. de Res. Asst. * FALLIERI, L. A. Res. Asst. * SANT'ANA, Miss Y. X. Res. Asst. * LAVALLE, D. Res. Asst. * SILVA MURTA, Mrs. I. M. da Res. Asst. * REZENDE, Miss E. S. Res. Asst. * BACCARINI, Miss I. Guest worker Dept. de Zool. GERKEN, Miss S. E. Res. Asst. Ribeirao Preto, Univ. de Sao Paulo, Fac. de Med., Dept. de Morfol. Humana Funcional e Aplicada LISON. L. Prof.. Head * CRUZ, A. R. Docent FERREIRA, A. L. Docent * AZOUBEL, R. Asst. Prof. * lUCIF, S. Asst. Prof. Fac. de Med. y de Cienc, Dept. of Genet. KERR. W. E. Prof.. Head ZUCCHI, R. Asst. Prof. Fac. Filos. Cienc. e Let., Dept. de Biol. * ROSA, C. F. A. * ALVES, M. A. R. Instr. Sao Paulo, Univ. de Sao Paulo, Fac. de Med., Dept. of Anat., Sect, of Neuroanat. * ERHART, E. A. Prof. CHILE Santiago, Univ. de Chile, Fac. de Med.. Inst, de Biol. "Juan Noe", Cat. de Embriol. BADINEZ. O. Prof. LEMUS, D. Asst. URUGUAY Montevideo, Univ. de Repiiblica, Fac. de Med., Hosp. de Clinicas. Inst, de Neurol., Sect, of Exper. Neurol. * GARCIA AUSST. E. Assoc. Prof., Head * BU^O, W. Asst. * VANZULLI, Mrs. A. * WILSON, E. VENEZUELA Merida, Univ. de Los Andes, Fac. de Cienc. Med., Dept. de Embriol. KLEISS, E. Prof., Head CARMONA de UZCATEGUI, Mrs. M. L. Asst. Prof. HERNANDEZ, Miss C. E. Asst. Prof. DURAN de LOPEZ, Mrs. L. Instr. ASIA CEYLON Colombo, Univ. of Ceylon, Fac. of Sci., Dept. of Zool. * SATHANANTHAN. A. H. Lect. Nugegoda, Vidyodaya Univ. of Ceylon. Fac. of Sci.. Dept. of Biol. Sci. * WAIDYASEKERA. P. L. D. Lect. (Zool. * DE SILVA. S. E. N. Res. Stud. CHINA Peking, Acad. Sinica. Inst, of Zool. CHANG, Ch. Y. TUNG. T. C. Shanghai, Acad. Sinica, Inst, of Exper. Biol.. Lab. of Developm. Physiol. PAI. S. Dir. CHUANG HSIAO HUI, Res. Fellow FORMOSA (sec TAIWAN) INDIA Allahabad, Allahabad Univ., M.L.N. Med. Coll.. Dept. of Anat. * VARMA, H. C. Prof., Head Dept. of Obstet. and Gynecol. * BAVEJA, Miss R. Lect. Fac. of Sci., Dept. of Biochem. * PANT, Mrs. R. Reader * MORRIS. Miss I. D. Lect. * VARMA. R. Res. Asst. * LAL, D. M. Res. Asst. Annamalainagar, Annamalai Univ., Dept. of Zool. * MUTHUKKARUPPAN, V. Lect. Baroda, Med. Coll.. Dept. of Biochem. PAI, M. L. Lect. Baroda, M.S. Univ. of Baroda, Fac. of Sci., Dept. of Zool. * SHAH, R. V. Reader * NAIR, K. S. S. Res. Assoc. * BONNY PILO Sen. Res. Scholar * CHAKKO, T. V. Res. Scholar * ASNANI. Miss M. Res. Scholar * HIRADHAR. P. Asst. Lect. Calcutta, Calcutta Univ.. Dept. of Zool.. Cell Res. Unit GANGULY, D. N. Reader MITRA. B. N. Res. worker RAY, A. K. Res. worker RAYCHOWDHURY, S. Res. worker SINGH-ROY. K. K. Postdoct. Fellow 208 India Israel Calcutta, Presidency Coll.. Dept. of Zool. MOOIvERJEE, S. Prof.. Head SINHA, A. K. Lect. GANGULY, B. Res. Fellow MOOKERJEE, Mrs. A. Res. Fellow CHATTERJEE, S. Res. Fellow MITRA, J. Res. Fellow LAHIRI. D. Res. Fellow CHAKRAVARTY, A. Res. Fellow BHATTACHERJEE, S. Res. Fellow MITRA, T. Res. Fellow KANJI, S. Res. Fellow MAKHIJA, S. Res. Fellow Cinnamara, Tea Research Assoc, Tocklai Exper. Station, Bot. Branch BARUA. D. N. Sen. Botanist Darjccling, N. Bengal Univ., Darjeeling Governm. Coll., Dept. of Zool. * DASGUPTA, B. Prof. Delhi, Univ. of Delhi., Dept. of Zool. PRASAD, M. R. N. Prof. SUNDARARAI, B. I. Reader RAO, S. R. V. RAO, K. V. Gorakhpur, Univ. of Gorakhpur, Fac. of Sci., Zool. Dept. * CHAUDHRY. H. S. Prof.. Head * SWARUP, K. Lect. * PANDEY, K. Lect. * NARAIN (GUPTA), Mrs. B. Sen. Res. Fellow * KHARE, M. K. Lect. * HAIDER, M. H. Res. Scholar * GUPTA, P. C. Res. Scholar Jaipur, Univ. of Rajasthan, Dept. of Zool. RAMASWAMI, L. S. Prof., Head MATHUR, R. S. Reader * NIAZI, I. A. Lect. Jorhat, Tea Research Assoc, Tocklai Exper. Station. Dept. of Entomol. * BANERJEE, B. Head Kolhapur, Shivaji Univ., Dept. of Zool. KAMAT, D. H. Chairman BAPAT, Miss S. Postgrad. Res. Stud. Lucknow, Univ. of Lucknow, Dept. of Zool. TANDAN, B. K. Reader Madras, Pachaiyappa's Coll.. Dept. of Bot. * LAKSHMANAN, K. K. Prof. Nagpur, Med. Coll., Dept. of Anat. * DUBEY, P. N. Prof., Head * KADASNE, D. K. Reader * JOSHI, Mrs. M. M. Lect. * NAVAGIRI, Mrs. S. S. Lect. * AGARWAL, Mrs. P. Lect. * PATIL. T. L. Lect. Nagpur, Nagpur Univ.. Post-Grad. Dept. of Zool. BELSARE. D. K. Lect. DORLE. A. K. New Delhi, All India Inst, of Med. Sci., Dr. Rajendra Prasad Center for Ophthalm. Sci. * AGARWAL, L. P. Prof. * ANGRA. S. K. Sen. Scient. Off. Poena, Nowrosjee Wadia Coll.. Dept. of Zool., Cell Res. Lab. * CHITNIS, P. S. Deraonstr. * LOBO, J. F. Demonstr. Poena, Univ. of Poona. Dept. of Zool. * MULHELKAR, Mrs. L. Prof., Head Rohtak, Med. Coll.. Dept. of Anat. * JIT. I. Prof. * SINGH, I. Assoc. Prof. Udaipur, Univ. of Udaipur. Sch. of Basic Sci. & Humanities, Dept. of Zool. GURAYA, S. S. Reader VARMA, Miss S. K. Res. Scholar INDONESIA Bandung, Bandung Inst, of Technol., Dept. of Chem. and Biol., Sect. Biol. TISNA-AMIDJAJA, D. A. Head * SUDARWATI, Miss S. ISRAEL Jerusalem, The Hebrew Univ., Hadassah Med. School, Fac. of Dental Med.. Lab. of Oral Chem. & Fluoride Res. GEDALIA. I. Sen. Lect. Dept. of Anat. * GITLIN, G. Assoc. Prof. Lab. of Genet. * FRIEDLANDER. M. Lect. Dept. of Physiol. BEN-OR (MILSTEIN). Mrs. S. Lect. Dept. of Zool. HAAS. G. Prof., Head STEINITZ, H. Prof. * EYAL (GILADI), Mrs. R Sen. Lect. * WERNER, Y. L. Sen. Lect. * BOSCHWITZ, Miss B. D. Lect. * ESHEL. Mrs. Sh. Res. Asst. * KOCHAV. Sh. Asst. * KARLIN. Miss D. * WOLK. M. * FAINSTAIN (HAMERMAN). Mrs. N. Stud. Dept. of Entomol. & Venomous Anim. SHULOV. A. Prof., Head PENER. M. P. Lect. BLONDHEIM, Mrs. S. A. Asst. MARGALITH, I. Pctah-Tikva, Beilinson Hosp., Rogoff Med. Res. Inst., Endocrinol. Unit * BER, A. Prof., Head Rehovoth, Hebrew Univ., Fac. of Agric, Dept. of Entomol. * LENSKY. Y. Sen. Lect. Rehovoth, Weizman Inst, of Sci.. Dept. of Cell Biol. FELDMAN, M. 209 Israel Japan Tcl-Aviv, Tel-Aviv Univ., Fac. of Med., Dept. of Embryol. & Teratol. * NEBEL. L. A. Assoc. Prof., Head * ABRAMOVICI, A. Lect. * ORNOY, A. Instr. * KASPI (VISHNIVETSKI), Mrs. Th. Asst * LONDON, J. Res. Asst. Fac. of Sci., Dept. of Zool. * KOCHVA, E. Assoc. Prof. * BYTINSKY-SALZ. H. Assoc. Prof. * KRAICER, P. F. Assoc. Prof. * MOAV, B. Lect. * TSAFRIRI, A. Asst. JAPAN Akkeshi, Hokkaido Univ., Fac. of Sci., Akkeshi Marine Biol. Station * KANOH, Y. Prof. Aomori-City, Tohoku Univ. at Asamushi, Marine Biol. Station FUKUSHI, T. Chiba, Natl. Inst, of Anim. Industry * OTSUKI, K. Res. Staff * SUGIE, T. Res. Staff * ONUMA, H. Res. Staff * IRIE, R. Res. Staff * SOMA, T. Res. Staff Chiba, Natl. Inst, of Radiol. Sci., Div. of Biol. * EGAMI, N. Head * ASAMI, K. Res. Off. * ETOH, H. Sci. Off. * FUJII, R. Res. Off. * HYODO (TAGUCHI), Mrs. Y. Sci. Off. * IWASAKI, Miss T. Res. Off. * NAKAZAWA, T. Res. Off. * TAGUCHI, Sh. Chief of Lab. * YAMADA, T. Res. Off. * YAMAGUCHI, T. Chief of Lab. Div. of Radiat. Hazards * MURAMATSU, S. Res. Off. * TAMANOI, I. Res. Off. Chikugo, Kyiishu Natl. Agric. Exper. Station, Dept. of Plant Pathol. & Entomol. * KISIMOTO, R. Res. Entomol. * MOCHIDA, O. Res. Entomol. Fukuoka, Kyiishii Univ., Fac. of Agric, Zool. Lab. * UCHIDA, T. A. Asst. Prof. Fac. of Med., Dept. of Anat. * YAMAMOTO, T. Prof. * HATAE, T. Res. Assoc. Fac. of Sci., Dept. of Biol. * KAWAKAMI, I. Prof. * YAMANA, K. Assoc. Prof. * lYEIRI, Mrs. S. Lect. * SASAKI, N. Lect. * AVE, K. Postdoct. Fellow * IMOH, H. Stud. * WADA, K. Stud. * MIYAHARA, Miss E. Stud. Gifu, Gifu Univ., School of Med, First Dept. of Anat. * SETOGUTI. T. Prof. Hakodate, Hokkaido Univ., Fac. of Fish., Dept. of Biol.. Lab. of Freshwater Fish Cult. * YAMAMOTO, K. Prof. Hirakata, Kansai Med. School, Biol. Lab. IKUSHIMA, N. Hirakata, Osaka Dental Coll., Biol. Lab. SHIN-IKfi, T. Prof. KURAHASHI, K. Asst. Prof. Hirosaki'City, Hirosaki Univ., Fac. of Med., Dept. of Anat. * YAMADORI, T. Assoc. Prof. Hiroshima, Hiroshima Univ., Fac. of Sci., Zool. Lab. * KAWAMURA, T. Prof. * KATASHIMA, R. Lect. * NISHIOKA, Miss M. Lect. Hiroshima, Hiroshima Woman's Univ., Biol. Lab. * NADAMITSU, S. Prof. Kagoshima, Kagoshima Univ., Liber. Arts Coll., Biol. Lab. * KUBOTA, T. Prof. Kanazawa, Univ. of Kanazawa, Fac. of Sci., Biol. Inst. * KIDO, T. Prof. * KISHIDA, Y. Asst. Prof. * ASAKURA, K. Res. Asst. * FUKE, M. Res. Asst. * OHSAKI, K. Res. Asst. Kobe, Kobe Univ., Fac. of Agric, Lab. of Anim. Nutrit. * MIZUNO, T. Prof. * HIKAMI, Y. Res. Assoc. School of Med., Dept. of Anat. * TAKEDA, H. Prof., Dir. * NAKAMURA, K. Assoc. Prof. Kobe, Konan Univ., Fac. of Sci., Dept. of Biol. * TAKAYA, H. Prof. * KAJI, S. Prof. * MASUDA, H. Asst. Prof. * WATANABfi, T. Kofu, Yamanashi Univ., Dept. of Biol. * SIRAKAMI. K. I. Prof. Kyoto, Doshisha Univ., Biol. Lab. * AMANO, H. Prof. * KOBAYASHI, N. Asst. Prof. * KATO, K.-I. Asst. Prof. Kyoto, Kyoto Univ., Fac. of Med., Dept. of Anat. * NISHIMURA, H. Prof. * TAKANO, K. Assoc. Prof. * TANIMURA, T. Lect. * YASUDA, M. Fact. Asst. * TANAKA, O. Fac. Asst. * YASUDA, Y. Res. Assoc. Fac. of Sci., Dept. of Botany BABA, S. Lect. Zool. Inst. IMAIZUMI, T. Zool. Inst., Lab. of Developm. Biol. OKADA, T. S. Prof., Dir. 210 Japan ICHIKAWA, M. Prof. (Emer.) ISHIZAKI. H. Asst. HAGIWARA, A. Asst. NAKAMURA, I. FUJISAWA. H. WATANABE. K. Maebashi, Gunma Univ., Inst, of Endocrinol., Dept. of Comp. Endocrinol. HANAOKA, K. I. Prof. INOUE, S. Asst. Prof. TAKAHASHI, H. Res. Assoc, HANAOKA, Y. Matsuyama, Ehime Univ., Biol. Inst. * SAWADA, N. Prof. NODA, Y. Assoc. Prof. Misaki, Univ. of Tokyo, Fac. of Sci., Marine Biol. Station * HIRAMOTO, Y. Assoc. Prof. Mito, Ibaraki Univ., Fac. of Sci., Biol. Inst. * YAJIMA, H. Instr. Miyazaki, Miyazaki Univ., Dept. of Biol. * NOTO, T. Lect. Morioka, Iwate Univ., Fac. of Agric, Inst, of Appl. Entomol. MIYA. K. Prof. KURIHARA, M. Instr. Nagasaki, Nagasaki Univ., Fac. of Fish., Dept. of Aquatic Biol. DOTSU, Y. Asst. Prof. TAKITA, T. Res. Assoc. School of Med., Dept. of Genet. * SHIOMI, T. Prof. * YOSHIKAWA, I. Res. Asst. Dept. of Pathol. HAYASHI, I. Prof., Chairman Nagoya, Nagoya Univ., School of Med., Dept. of Orthop. Surgery NAKAGAWA, M. Prof. * NOGAMI, H. Instr. Research Inst, of Environm. Med. * MURAKAMI, U. Prof. * KAMEYAMA, Y. Asst. Prof. * HOSHINO, K. Instr. * NAKAYAMA, Miss T. Res. Assoc. Fac. of Sci., Biol. Inst. SATO, T. Prof. (Emer.) FUKUDA, S. Prof., Dir. YAMAMOTO, T. Prof. KAMA, T. Prof. NAKANO, E. Lect. KAJISHIMA, T. Asst. Prof. HISHIDA, T. Asst. AKETA, K. Asst. EGUCHI, G. Asst. TAKEUCHI, S. Asst. TAKATA, K. Asst. TOMITA, H. OGAWA (MATSUDA), Mrs. N. Inst, of Molec. Biol. * MIKI-NOUMURA, Mrs. T. Asst. Prof. Nagoya, Woman's Coll. of Tokai-Gakuen, Lab. of Biol. HASEGAWA. M. Prof. Japan Nara, Nara Woman's Univ., Fac. of Sci., Biol. Inst., Lab. of Anim. Morphdl. * ARIMA, Sh. Prof. Niigata, Univ. of Niigata, Fac. of Agric, Dept. of Biochem. & Technol. of Anim. Products * NONAMI, Y. Prof. Fac. of Sci., Biol. Inst. * IWASAWA, H. Asst. Prof. School of Med., Dept. of Hygiene ENDO, A. Grad. Stud. Nishinomiya, Kwansei Gakuin Univ., Fac. of Sci., Dept. of Biol. * OJIMA, Y. Prof. Osaka, Kozu High School, Biol. Lab. * HASHIMOTO, K. Osaka, Osaka City Univ., Fac. of Sci., Lab. of Embryol. * ASAYAMA, S. Prof. * AMANUMA, A. Lect. * KOTANI, M. Asst. * FURUSAWA, M. Asst. * ADACHI, H. Postgrad. Stud. * MARUOKA, S. Postgrad. Stud. * AWATTA, E. Postgrad. Stud. Osaka, Osaka Kyoiku Univ.. Dept. of Biol. * SUGINO, H. Prof. * NAKAMURA, O. Prof. * TAHARA, Y. Asst. Prof. * HAYAKAWA, Miss H. Asst. * OKUNO, Y. Asst. Osaka, Osaka Univ., Coll. of Gen. Educ, Dept. of Biol. * IMAHORI, K. Prof. * KOSHIDA, Y. Asst. Prof. * IWASA, K. Asst. Prof. * MAEDA (KIBATA), Mrs. M. Asst. Sapporo, Hokkaido Univ., Fac. of Sci., Anim. Chromosomes Research Unit * MAKING, S. Prof. * SASAKI, M. Asst. Prof. Zool. Inst. * ICHIKAWA, A. Prof. (Emer.) * AOTO, T. Prof. * YAMAMOTO, T. S. Asst. Prof. * IWATA, F. Asst. Prof. * KATAGIRI, Ch. Asst. Fac. of Vet. Med., Dept. of Vet. Obstet. * ISHIKAWA, T. Prof. * TIBA, T. Asst. Sendai, Japan Dental Pathol, and Embryol. Research Inst. YAMAMURA, Sh. Dir. Sendai, Tohoku Univ., Inst, of Biol., Lab. of Embryol. MOTOMURA, I. Prof., Dir. Toba, Nagoya Univ., Sugashima Marine Biol. Station * SUGIYAMA, M. Prof.. Dir. * ISHIKAWA, M. z\.ssoc. Prof. * KOJIMA, M. K. Res. Assoc. * TSUKAHARA, J. Res. Assoc. 211 Japan Tokushima, Tokushima Univ., School of Med., Dept. of Anat. * DAIKOKU, S. Prof.. Dir. Dept. of Surgery * TAKITA. S. Prof., Dir. Tokyo, Japan Woman's Univ., Biol. Lab. KOBAYASI, H. Prof. Tokyo, Natl. Cane. Center Research Inst. KURU, M. Dir. ITO, I. Div. of Endocrinol. * NOUMURA, T. Sen. Scient. Tokyo, Natl. Inst, of Agric. Sci., Div. of Entomol. HIRANO, Ch. Res. Assoc. Tokyo, Natl. Science Museum, Div. of Zool. OKADA, Y. K. Prof. (Emer.) TOMODA, Y. Cur. Fish. Tokyo, Nihon Univ., Med. Fac, Anat. Inst. NAKAYAMA, T. Tokyo, Nippon Med. School, Dept. of Anat. * NAKAMURA, I. Prof. Dept. of Biochem. * SHUKUYA, R. Prof.. Chairman * KAJITA, A. Asst. Prof. * HAMADA, K. Asst. Tokyo, Ochanomizu Univ.. Fac. of Sci., Dept. of Biol.. Embryol. Sect. DAN, Mrs. J. C. Lect. Tokyo, St. Paul's Univ., Coll. of Gen. Educ, Biol Lab. * ODA, S. Prof. Tokyo, Tokyo Kyoiku Univ., Fac. of Sci., Inst, of Zool. OKA, H. Prof. (Emer.) * HAYASHI, Y. Prof. * SEKIGUCHI, K. Asst. Prof. * WATANABE, H. Asst. Prof. * OKADA, M. Res. Assoc. * TANAKA, K. Asst. HIRABAYASHI, T. Asst. Tokyo, Tokyo Med. and Dental Univ., Fac. of Med., Dept. of Anat. * NIIZIMA, M. Prof. * WATANABE, K. Sen. Lect. * KATO, M. Lect. HIRAKOW, R. Instr. * ITO, R. Instr. Tokyo, Tokyo Metropolitan Univ., * DAN, K. Prof.. President Fac. of Sci.. Dept. of Biol., Embryol. Sect. * YANAGISAWA, T. Prof. * OKAZAKI. Miss K. Assoc. Prof. * ISONO, N. Instr. * IKEDA, Miss M. YAZAKI. Miss I. * KYONO (NAKAGAWA). Mrs. H. * SAWAI, T. Grad. Stud. * NEMOTO, S. * KANKI, T. Grad. Stud. * UEMURA, I. Grad. Stud. Taiwan * NISHIZU. K. Grad. Stud. * MATSUNAGA. Miss Y. Grad. Stud. Tokyo, Univ. of Tokyo, Coll. of Gen. Educ, Biol. Inst. OZEKI, K. Assoc. Prof. MOHRI, H. Assoc. Prof. CHINO, H. Assoc. Prof. MARUYAMA, K. Assoc. Prof. HOSHI, M. Instr. OBINATA, T. Instr. Ocean Research Inst., Lab. of Physiol. * KANATANI, H. Assoc. Prof. * SHIRAI, Miss H. Res. Assoc. Fac. of Sci., Dept of Biophys. and Biochem. * SAKAI, H. Assoc. Prof. * KIMURA. I. Asst. Prof. * KONDO, K. Grad. Stud. Zool. Inst. * FUJII, T. Prof. * TERAYAMA, H. Prof. * YAMAGAMI, K. Asst. Prof. * KINOSHITA, S. Asst. Prof. Tokyo, Waseda Univ.. School of Educ, Biol. Lab. NUMANOI, H. Prof. Toyama, Toyama Univ., Fac. of Lit. and Sci., Biol. Inst. * HORI, R. Asst. Prof. Tsu, Mie Prefect. Univ., School of Med., Dept. of Anat. * MIKAMI, Y. Prof. * OHASHI, T. Asst. Prof. * NAGAE, H. Lect. Fac. of Fish., Zool. Inst. * OOISHI, Miss S. Lect. * IZAWA, K. Asst. Urawa, Saitama Univ., Fac. of Sci. and Engin.. Dept. of Biochem. * ISHIDA. J. Prof. Yokohama-Hiyoshi, Keio Univ., Dept. of Biol. * MORI. Y. Prof.. Head * MORI. H. Prof. * ENDO, Y. Prof. * KATAKURA, Y. Lect. * OBIKA, M. Asst. Prof. * MATSUMOTO, J. Asst. Prof. LEBANON Beirut, American Univ. of Beirut, Fac. of Arts and Sci., Biol. Dept. * MALONE, T. E. Prof., Chairman * BUTROS, J. M. Prof. PAKISTAN Rabwah, Talim-Ul-Islam Coll.. Dept. of Zool. * KHAN. M. S. Lect. TAIWAN (Formosa) Taipei, Natl. Defense Med. Center. Dept. of Biomorphics * LIANG, H. M. Prof., Head * HSU (LIANG), Mrs. C. Y. Prof. * YU (KOU), Mrs. N. W. Lect. Taipei, Natl. Taiwan Univ., Dept. of Zool. KING, Mrs. D. WEI Prof. 212 Turkey Austria TURKEY Ankcira, Ankara Univ., Vet. Fac, Inst, of Histol. and Embryol. EVREN. A. Ankara, Hacettepe Univ., Med. Fac, Inst, of Histol. & Embryol. * KERSE (BUYUKOZER). Mrs. I. Prof., Head * UYSAL, M. * §EFTALIOGLU. Miss A. * GoNENg. Miss A. Biol. Inst. * GOLDHOR, Miss S. Visit. Asst. Prof. Erzurum, Atatiirk Univ., Med. Fac, Inst, of Histol. & Embryol. * AYKAg, I. D.V.M. AUSTRALIA AUSTRALIA NEW SOUTH WALES (N.S.W.) Armidale, Univ. of New England, Dept. of Botany * de FOSSARD. R. A. Lect. School of Rural Sci., Dept. of Agric. Biol. * BLUNT, M. H. Sen. Lect. * CLAXTON, J. H. Lect. Fac. of Sci., Dept. of Zool. * OFARRELL, A. F. Prof. * STOCK. A. Prof. * GILES, E. T. Assoc. Prof. * de BAVAY, J. M. Lect. Canberra, Austr. Natl. Univ., School of Gen. Studies, Dept. of Zool. * SMYTH, J. D. Prof. * TYNDALE-BISCOE. C. H. Sen. Lect. * JANSSENS. P. A. Lect. * RENFREE. Miss M. B. Postgrad. Stud. Kensington, Univ. of New South Wales, School of Anat. * BLUNT, M. J. Prof. * O'BRIEN, B. R. A. Assoc. Prof. Prospect, C.S.I.R.O., Div. of Anim. Physiol., Ian Clunies Ross Anim. Res. Lab. McDonald, i. w. Chief * ALEXANDER, G. Sen. Princ Res. Scient. * BRADEN, A. W. H. Sen. Princ. Res. Scient. * LYNE, A. G. Princ. Res. Scient. Sydney, Univ. of Sydney, Dept. of Histol. and Embryol. * SULLIVAN, G. E. Lect. School of Biol. Sci., Zool. Bldg. * STEPHENSON, N. G. Sen. Lect. * ANDERSON, D. T. Reader (Biol.) QUEENSLAND Townsville, Univ. Coll. of Townsville, School of Biol. Sci., Dept. of Zool. * BURDON-IONES, C. Prof., Head * LUCAS. J. S. Lect. SOUTH AUSTRALIA Adelaide, Univ. of Adelaide, Dept. of Anat. and Histol. * PACKER, A. D. Reader * VAN DETH, J. H. M. G. Reader VICTORIA Clayton, Monash Univ., Dept. of Physiol. * WESTERMAN, R. A. Sen. Lect. * McCANCE, I. Sen. Lect. * PHILLIS, J. W. Sen. Lect. * MARK, R. F. Sen. Lect. Parkvillc, Univ. of Melbourne, School of Anat. * LAVARACK, J. O. Reader * STRATFORD (MILLER), B. F. Sen. Lect. Dept. of Pathol. GREEN. Ch. R. Sen. Lect. WESTERN AUSTRALIA Ncdlands, Univ. of W. Australia, Fac. of Sci., Zool. Dept. * SHIELD, J. W. Sen. Lect. * ARNOLD, Miss J. M. Sen. Demonstr. NEW ZEALAND Christchurch, Univ. of Canterbury, Dept. of Zool. * STOUT, V. M. Sen. Lect. * BENZIE, Miss V. L. Lect. Dunedin, Univ. of Otago, Dept. of Zool. * PILKINGTON, J. B. Lect. Palmerston North, Dept. of Scient. and Industr. Research (D.S.I.R.), Plant Physiol. Div. DENNE, M. P. WILLISON (BARFORD), Mrs. J. Palmerston North, Massey Univ. of Manawatu, Dept. of Botany THOMAS, R. G. Prof. EUROPE AUSTRLA Salzburg, Paracelsus Forschungs-Inst. fur Physiol, und Biophysik HASLAUER, J. Wiss. Leiter Wicn, Univ. Wien, Anat. Inst. HAYEK, H. Prof.. Dir. Hygiene Inst. * FLAMM, H. Prof. Dir. Inst, fiir Krebsforschung * WRBA, H. Prof., Dir. SEILERN-ASPANG, F. * KRATOCHWIL. K. Prof. 213 Belgium Czechoslovakia BELGIUM Antwerpcn, State Univ. Center, Fac. of Sci., Lab. of Anat. and Embryol. * VAKAET, L. C. A. Prof. * CALLEBAUT, M. Asst. Bruxelles, Univ. de Bruxelles Fac. de Med., Inst. d'Anat., Lab. d'Embryol. DALCQ, A. M. Prof. (Emer.) PASTEELS, J. J. Prof. MULNARD, J. G. Charge de Cours MILAIRE. J. Asst. * POURTOIS, M. Lic.ScDent. Fac. des Sci., Lab. de Biol. Anim. et Histo'l. Comp. HERLANT (MEEWIS), Mrs. H. Prof. Inst, de Zool. Torley-Rousseau BRIEN, P. Prof., Dir. Bruxelles (see Rhode-St.Gcnesc) Gent, Univ. of Gent, Fac. of Med., Lab. of Anat. FAUTREZ, J. C. Prof.. Dir. FAUTREZ (FIRLEFYN), Mrs. N. J. ROELS, F. First Asst. ANTEUNIS, Miss A. H. J. COLLE (VANDEVELDE), Mrs. A. Dept. of Obstet. and Gynecol. * THIERY, M. Prof., Head * DEROM, R. M. J. Lect. Dept. of Ophthalmol. FRANCOIS, J. RABAEY, M. Assoc. Prof. MATTON (VAN LEUVEN) , Mrs. M. D. Res. Assoc. Liege, Univ. de Liege, Fac. de Med., Lab. de Biochim. * DENIS, H. A. Cherch. qualifie FNRS * FRENCKELL. Miss M. von Stag, de Rech. FNRS Lab. d'Anat. Pathol. FIRKET, H. Prof. REZNIK, M. First Asst. Inst. d'Histol. CHEVREMONT, M. J. J. Prof., Head Louvain, Univ. de Louvain, Inst. d'Anat. CAMPENHOUT, E. van Prof., Dir. Inst, de Zool., Lab. d Embryol. VANDEBROEK, G. Prof.. Dir. Mol, Centre d'Etude de I'Energie Nucl., Dept. de Radiobiol. * LEDOUX, L. (Lab. de Biochim. cell.) * LEONARD, A. (Lab. de Genet.) Rhode-St.Gencsc, Univ. libre de Bruxelles, Fac. des Sci.. Lab. de Morphol. Anim. * BRACHET. J. L. A. Prof., Dir. * FICQ, A. A. Assoc. Prof. * BALTUS, Miss E. J. * TENCER, Miss R. Chef de Trav. * QUERTIER, Miss J. A. F. Asst. * VAN GANSEN (RASMONT), Mrs. P. Charge de Cours * DECROLY (BRIERS), Mrs. M. Asst. * DENIS, Miss S. * HANOCQ, Miss F. A. ' GEUSKENS. M. * MALPOIX-HIGGINS, Mrs. P. M. BULGARIA Sofia, Bulg. Acad, of Sci.. Inst, of Zool. BOSCHKOW, D. K. Res. worker CZECHOSLOVAKIA Brno, Czechoslov. Acad, of Sci., Inst, of Vertebr. Zool., Dept. of Morphol. * KLIMA. M. Head * STSRBA, O. Doc. * KRAL, B. Res. worker Hradcc Kralove, Charles Univ., Med. Fac, Dept. of Biol. * BARTOS, F. Assoc. Prof. * PUZA, V. Asst. Prof. * SRB, V. Asst. Lect. * HROCH, M. Asst. Lect. * GAYER, J. Scient. worker Kosice, Vet.-Med. Fac, Anat. Inst. POPESKO, P. Prof., Dir. * RAJTOVA, Miss V. Asst. Plzen, Charles Univ.. Fac. of Med., Inst, of Histol. and Embryol. SLAB?, O. Prof.. Dir. * MATEJKA, M. Docent SLIPKA, J. Docent * KOCOVA (PECHACKOVA). Mrs. J. Asst. Inst, of Pathophysiol. MYSLIVECEK, J. Prof.. Head * SOBOTKA. P. Asst. Prof. HASSMANNOVA, Miss J. Scient. worker CHALOUPKA, Z. Asst. * ROKYTA, R. Asst. ZAHLAVA, J. Asst. Praha, Charles Univ., Med. Fac, Dept. of Anat. * DOSKOCIL, M. Prof. * LEME2, L. Docent * cIHAK, R. Docent * PUZANOVA, Mrs. L. Docent * SEICHERT, V. Asst. * DYLEVSKf, I. Asst. Inst, of Embryol. * VACEK, Z. Prof., Dir. * KRAUS, R. Asst. Prof. * MARTINEK. J. Asst. * JIRSOVA, Miss Z. * SEVCENKO, Mrs. G. Asst. * PEXIEDER, T. Asst. * HACH, P. Asst. * KOMINKOVA, Miss E. Asst. * REMENAR, M. Asst. Dept. of Histol. * JELINEK, R. RYCHTER, Z. Inst, of Physiol., Lab. of Embryophysiol. * SEDLACEK, J. Asst. Prof. * DOUSOVA-SVEHLOVA, Mrs. M. Asst. * StASTN?, F. Asst. * FROHLICH, J. Asst. Fac. of Sci., Dept. of Exper. Zool. * SLADECEK, F. Prof., Dir, 214 Czechoslovakia France * ROMANOVSK7. A. Assoc. Prof. * NEDVIDEK. J. Sen. Asst. * VILIMKOVA-HABROVA, Mrs. V. Sen. Asst. * MACHA. J. Asst. * PALECEK. J. Asst. * MACELA, A. Res. Fellow Praha, Czechoslov. Acad, of Sci., Inst, of Entomol., Dept. of Developm. Morphol. * MASNER. P. Scient. worker Dept. of Physiol. NOVAK, V. J. A. Head SLAMA. K. Res. Assoc. * SEHNAL, F. Res. worker Dept. of Exper. Biol, and Genet. HASEK, M. Dir. VOJTISKOVA, M. Adj. Dir. Inst, of Physiol., Lab. of Electr. Micr. ZELENA (TOPICOVA), Mrs. J. Head Praha, Inst, for the Care of Mother and Child, Embryol. Lab. JIRASEK. J. E. Chief CAPKOVA (HRUBA). Mrs. A. Praha, Postgrad. School of Med., Clin, of Obstet. and Gynecol. UHER, J. Asst. DENMARK Aarhus, The Royal Dental Coll., Dept. of Anat. * KNUDSEN, P. A. Prof., Head * WESTERGAARD, E. Lect. * BUGGE. J. Lect. Copenhagen, Carlsberg Found., Biol. Inst. ZEUTHEN. E. Prof., Dir. * HAMBURGER, Mrs. K. Asst. * NILSSON, Mrs. J. R. Res. Asst. * WESTERGAARD, O. Res. Asst. * ANDERSEN, H. A. Res. Fellow Copenhagen, Finsen Inst., Finsen Lab. * PETERS. Mrs. H. Head of Dept. * PEDERSEN, T. * SJOLTE BYSKOV, Mrs. A. G. * N0RBAEK S0RENSEN. I. Copenhagen, State Serum Inst. BIRCH-ANDERSEN, A. Head of Dept. Copenhagen, State Vet. Serum Lab. * BLOM, E. Head of Dept. Copenhagen, Univ. of Copenhagen, Dept. of Anat. MOE, H. Prof. Inst, of Comp. Anat. * WINGSTRAND, K. G. Prof. * N0RREVANG. A. Asst. Lect. BRESCIANI, J. Asst. Inst, of Gen. Zool. * PEDERSEN, K. J. Lect. Copenhagen * BR0NDSTED, H. V. Prof. (Emer.) Odcnse, Odense Univ., Dept. of Molec. Biol. * PLESNER, P. Prof. ENGLAND (see UNITED KINGDOM) FINLAND Helsinki, Univ. of Helsinki, Children's Hosp. * RAPOLA, M. H. J. Chief Pathol. III. Dept. of Pathol.. Lab. of Exper. Embryol. * SAXEN, L. O. Prof. * WARTIOVAARA, J. J. Postdoct. Fellow LAHTI. A. KAITILA, I. Dept. of Zool., Lab. of Exper. Embryol. * TOIVONEN, S. I. Prof. * KUUSI, Miss T. K. Lect. * LEIKOLA. A. H. A. * KOHONEN, P. J. Res. Fellow * KOSKIMIES, O. J. Res. Asst. * ROSTEDT, Miss I. B. Turku, Univ. of Turku. Dept. of Forensic Med. * RAEKALLIO, J. Prof., Chairman * MAKINEN (LONNBERG). Mrs. P.-L. Res. Assoc FRANCE Arcachon, Univ. de Bordeaux, Fac. des Sci., Inst, de Biol. Marine * CAZAUX, CI. Maitre-Asst. Azay-lc-Ferron, Ecole de Perfect. Agric, Centre de Biol. Appliquee * BERTON. J. P. Banyuls'sur-Mer, Fac. des Sci. de Paris, Lab. Arago * MARTHY, H.-J. Guest worker BOLETZKY, S. von Guest worker BcUcvuc, C.N.R.S., Centre de Rech. sur la Nutrition LAMBIOTTE. M. G. D. Maitre de Rech. CROIZAT. B. Attache de Rech. Besangon, Univ. de Besangon, Fac. des Sci., Inst, des Sci. Nat., Lab. de Zool. * GOMOT, L. Prof. * GUYARD, A. Asst. * PROPPER, A. Asst. * BRIDE (VUILLET), Mrs. M. Maitre-Asst. * BRIDE, Miss J. * GRIFFOND (ROGNON). Mrs. B. Chercheur C.N.R.S. * MARCHAND. C. R. Asst. Bordeaux, Univ. de Bordeaux, Fac. de Med.. Lab. de Biol. * STOLL, R. Prof.. Dir. * MARAUD, R. Prof. Bordeaux (see Arcachon, Talcncc) Caen, Univ. de Caen, Biol, et Ecol. * SIGNORET. J. * SAUSSEY, M. Maitre de Conf. * MARTIN. R. P. Asst. Clermont-Ferrand, Fac. of Med.. Lab. of Histol. and Embryol. * TURCHINI. J. P. Prof. * MALET. P. Maitre de Conf. * POURHADI. R. Asst. Fac. des Sci., Lab. de Biol. Anim. * LUTZ. H. Prof.. Dir. 215 France France * LUTZ (OSTERTAG). Mrs. Y. Maitre de Rech. * HUBERT, J. Att. de Rech. DIDIER (MARTIN), Mrs. E. Asst. * COLLIN, J-P. Maitre-Asst. * FARGEIX, N. Maitre-Asst. * DAVID (BOGLI), Mrs. D. Att. du C.N.R.S. BRUEHL, M. Th. Asst. Evreux, Centre Hosp. Region., Dept. of Pathol., Central Lab. * GAILLARD. }. A. Chief Gif-sur-Yvctte, C.N.R.S.. Lab. de Genet. Evolutive * CHARNIAUX (COTTON), Mrs. H. Prof. * BERREUR (BONNENFANT), Mrs. J. Chargee de Rech. * GINSBURGER-VOGEL. T. Maitre-Asst. * FRIED (MONTAUFIER), Mrs. M. C. Cherch. libre * ZERBIB. Ch. Asst. Grenoble, Univ. de Grenoble, Fac. des Sci., Lab. de Zool. * SENGEL, Ph. Prof. * KIENY, Mrs. M. A. SENGEL Maitre de Rech. au C.N.R.S. * CHIBON, P. Maitre de Conf. BERNARD, F. Maitre-Asst. * BULLIERE, D. Maitre-Asst. MANDARON, P. M. Maitre-Asst. * MAUGER (GIRARD), Mrs. A. Maitre-Asst. * BOUVET, J. L. Maitre-Asst. * CHEVALLIER. A. D. Asst. * DHOUAILLY, Miss D. Asst. * GEORGES, Miss D. Asst. * PAUTOU (MfiRIC). Mrs. M. P. Asst. RUSAOUfiN, Mrs. M. Asst. * SAXOD, R. Maitre Asst. THEVENET, Miss A. Asst. * BULLIERE (CHALLANDE), Mrs. F. Asst. * ZOST. Miss B. * ROUX, J. P. * NOVEL, G. * BRUGAL, G. ]. Y. Jouy-en-Josas, C.N.R.Z., Inst. Natl, de la Rech. Agronom.. Station Centr. de Physiol. Anim. * TORRES (WINTENBERGER), Mrs. S. Maitre de Rech. Lille, Univ. de Lille, Fac. des Sci., Lab. de Biol. Anim. * BOILLY. B. Lab. de Zool. * MARCEL, R. Maitre-Asst. * DHAINAUT, A. Maitre-Asst. * BART, A. Maitre-Asst. Lyon (see Villcurbanne) Marseille, Fac. des Sci. Saint Charles, Lab. de Morphogenet. Anim. * CHANDEBOIS. Miss R. Prof. DELYE (ROLLIN), Mrs. P. M. Maitre-Asst. * REYNAUD, G. R. Maitre-Asst. * HOARAU. F. Asst. * CORNEC, J. P. Asst. * MAURY (GALLISSIAN), Mrs. M. F. Asst. * HIRN, M. Asst. * SOLBANI, Mrs. L. Asst. Lab. de Biol. Gen. ABELOOS, M. Prof., Dir. Montpeilier, Univ. de Montpellier, Fac. de Med., Lab. d'Anat. * BOSSY, J. G. M. Prof. agr. Lab. d'Histol. * SENTEIN, P. Prof. * SANCHEZ (TEFF), Mrs. S. Charg. de Rech. CNRS * HUMEAU, C. Asst. * TEMPLE. D. Asst. Fac. des Sci., Lab. de Neurophysiol. * MARTY, R. J. L. Prof. Lab. de Physiol. Anim. ASSENMACHER, I. A. Prof. Lab. de Physiol, des Invertebres * VERNET(CORNUBERT),Mrs.G. Prof. Lab. de Zool. * LEGENDRE, R. Prof. * EMERIT, M. Maitre-Asst. * CASSAGNE-MfiJEAN, Mrs. F. Maitre-Asst. * BONS, J. Maitre-Asst. Moulis, Lab. Souterrain du C.N.R.S. JUBERTHIE, C. J. Maitre de Rech. JUBERTHIE-JUPEAU, Mrs. L. Chargee de Rech. DURAND, J. P. Att. de Rech. ROUGH, R. Att. de Rech. Nancy, Univ. de Nancy, Fac. de Med., Lab. d'Embryol. DOLLANDER, A. Prof.. Dir. BLONDELET, J. Chef de Trav. GERARD, H. Asst. BODELET, B. Asst. CURY. G. Charge de Rech. CNRS HATIER-AUTELIN, Mrs. R. Att. de Rech. CNRS ROBERT, Miss M.-F. COZETTE, P. Lab. d'Histol. LEGAIT, E. Prof., Dir. Lab. de Zool. * STfiPHAN. F. Prof. * STEPHAN (DUBOIS). Mrs. F. Maitre de Rech. * PIHAN, J. C. Maitre Asst. * SCHILT, J. Asst. * BAUTZ (PORTMANN), Mrs. A. M. Asst. * LANOT, R. Att. de Rech. Nantes, Fac. des Sci. de Nantes, Lab. d'Embryol. * LEDOUARIN(CHAUVAC).Mrs. N.M. Dir. Lab. de Physiol. Anim. et Cell. * LE DOUARIN. G. H. Dir. Nogcnt sur Mamc, C.N.R.S., Inst. d'Embryol. Exper. * WOLFF, Et. C. Prof., Dir. * 'WOLFF (HENNIG). Mrs. Em. Dir. de Rech. 216 France France * BEAUPAIN (CREPY), Mrs. D. Att. de Rech. * BENOIT, J. A. A. Sous-Dir. de llnst. de Rech. * CROISILLE, Y. Sous-Dir. du Lab. du Coll. de France * CUMINGE, Miss D. Asst. de Rech. * DAMERON, Miss F. Chargee de Rech. * DESVEAUX-CHABROL. Mrs. }. Biol. * DIETERLEN (LIEVRE), Mrs. F. Chargee de Rech. * DUBOIS. R. Sous-Dir. du Lab. du Coll. France FEDECKA (BRUNER). Mrs. B. Chargee de Rech. * GASC. J. M. * GIRARD. H. Biol. * LAZARD (HAUBEN), Mrs. L. Charg. de Rech. * LOMBARD (DES GOUTTES). Mrs. M. N. Att. de Rech. * MARIN (LEWIN). Mrs. L. Chargee de Rech. * MARTHY, H.-J. Guest worker * MARTIN (FORGET). Mrs. C. S. Biol. * MASON, J. Att. de Rech. * PAGEOT (SIMPSON). Mrs. P. * PINOT, Miss M. Chargee de Rech. * POURREAU (SCHNEIDER). Mrs. N. M. Chargee de Rech. * REYSS-BRION (DUCREAU). Mrs. M. Chargee de Rech. * SALAUN, Miss J. Chargee de Rech. * SALZGEBER. Miss B. Maitre de Rech. * SCHEIB (PFLEGER). Mrs. D. Maitre de Rech. * SIGOT. M. Maitre-Asst. * SIGOT (LUIZARD). Mrs. M. F. Att. de Rech. * SORIANO, L. I. Charge de Rech. * STENGER (HA.FFEN), Mrs. K. E. Maitre de Rech. * STRUDEL. G. Dir. Adj. du Lab. de I'Ecole Prat, des Hautes Etudes * ZILLER (SENGEL), Mrs. C. Biol. Orsay, Univ. de Paris. Fac. des Sci. d'Orsay, Lab. d'Anat. Comp. * BEAUMONT. A. Prof. * THILLARD. Miss M. ]. Maitre-Asst. * YVROUD, Miss M. Maitre-Asst. * HOURDRY. J. Maitre-Asst. * DAUGERAS. Miss N. Asst. Lab. de Biol. Anim. * LENDER. Th. Prof. * LE MOIGNE. A. Maitre-Asst. GABRIEL, A. Maitre-Asst. * HUET, CI. Maitre-Asst. * HUET, M. Maitre-Asst. * SAUZIN, Miss M. J. Asst. Lab. de Zool. * BERGERARD, J. Prof., Dir. * LAUGE. Miss G. Maitre-Asst. * BLUZAT. R. R. Maitre-Asst. * LABOUR, G. R. Asst. * MAISONHAUTE, CI. Stag, de Rech. Paris, Coll. de France. Lab. d'Embryol. Exper. (see Nogcnt) * FAURfi-FREMIET. E. Prof. Paris, Ecole d'Anthropol. de P. Broca HUET. J. A. Dir. * FRIANT, Mrs. M. Prof. Paris, Inst. Natl. Agronom., Lab. de Zool. * PINET. J. M. Asst. Paris, Inst. Natl, de la Sante et de la Rech. Med. (I.N.S.E.R.M.). Unite de Physiol. Placentaire * PANIGEL, M. Prof. * LE GOASCOGNE, C. Att. de Rech. * HERNANDEZ (VERDUN). Mrs. D. F. Att. de Rech. * CHALLIER, J. C. Asst. * LEGRAND. Miss Ch. Asst. * SANANES. Miss N. Asst. * SCHNEIDER. H. Asst. * BERTON, J. P. Att. de Rech. Paris, Inst. Oceanographique. Lab. de Physiol. * OLIVEREAU. Miss M. M. A. Maitre de Rech. Paris, Maternite de Port-Royal, Lab. de Chim. Hormonale * CEDARD (WILLSTAETTER), Mrs. L. Maitre de Rech. * GUICHARD (CHAVENAT), Mrs. A. Paris, Museum Natl. d'Hist. Naturelle, Lab. de Biol. Invert. Marins * LEVI, CI. Prof. * BOROJEVIC, R. Att. de Rech. * CONAN, G. Y. Asst. * LENICQUE, P. M. Maitre de Rech. au CNRS Paris, Univ. de Paris, Fac. de Med.. Lab. d'Anat. DELMAS, A. Prof., Dir. HUREAU. J. Prof. agr. ALEXANDRE, J. H. Prof. agr. AARON. C. Asst. ENNABLI. E. Asst. EYRIES. Ch. PINEAU. H. PERLES. B. CHOUARD. C. H. * LASSAU. J. P. Chef de Trav. Lab. d'Histol.-Embryol. A. * TUCHMANN-DUPLESSIS, H. Prof. * DAVID, G. Prof. agr. * MERCIER (PAROT). Mrs. L. Maitre de Rech. * AUROUX, M. Chef de Trav. * ROUSSEL, C. Chef de Trav. Lab. d'Histol.-Embryol. B * GIROUD, A. Prof. hon. * TAMBOISE, E. Prof, agr, * SCHRAMM, B. Prof. agr. * MARTINET, Mrs. M. Chargee de Rech. au CNRS * DADOUNE, I. P. Chef de Trav. * CHEVREAU, J. P. Chef de Trav. * SOLERE, M. Chef de Trav. 217 France France Inst. d'Histochim. Med. * WEGMANN. R. W. Dir. adj. * HADJUSKI, P. Paris, Univ. de Paris, Fac. des Sci., Lab. d'Anat. Comp. * DEVILLERS, Ch. Prof. * FRANgOIS, Y. Prof. * ROSENBERG. A. J. Prof. * CORSIN, Miss. J. Maitre-Asst. * CLAIRAMBAULT. P. Maitre-Asst. * BOULEKBACHE. H. Asst. * COUPS, R. J. F. Asst. * GOSWAMI, M. N. D. Biochem. * CHANCONIE (MAURY), Mrs. M. Ing. CNRS Lab. d'Embryol. GALLIEN, L. Prof., Dir. COLLENOT, A. Maitre de Conf. Lab. d'Evol. des Etres Organises * CHARNIAUX (COTTON), Mrs. H. Prof. * MEUSY, J. J. Att. de Rech. * PA YEN, Miss G. G. Att. de Rech. * VIANEY-LIAUD, M. Asst. * DfiPECHE, J. Asst. * TCHELEBI (PAPILLON). Mrs. M. Att. de Rech. Lab. de Physiol. Comp. JOST, A. D. Prof., Dir. Lab. de Physiol, des Insectes * SCHOELLER (RACCAUD), Mrs. J. Maitre de Conf. Fac. Saint-Antoine, Lab. d'Embryol. * ROUX, Ch. Prof. Paris (see also Nogcnt, Orsay, Sannois) Poitiers, Fac. des Sci., Lab. de Physiol. Anim. * GARGOUiL, Y. M. Prof. * BERNARD, CI. Asst. * PAGER, Miss J. Cherch. CNRS * GROS, D. Moniteur * RAYMOND, G. Moniteur Reims, Univ. de Reims, Fac. des Sci., Lab. de Biol. Cellulaire * GONTCHAROFF, Miss M. Prof, titul. BIERNE, J. Maitre-Asst. LECHENAULT, H. Maitre-Asst. PASTISSON, Miss C. Maitre-Asst. * VERNET, G. Asst. JALOUZOT. R. Asst. Lab. de Physiol. Anim. * JACQUOT, R. L. Prof. * NAGEL, J. Maitre-Asst. * SUTTER, B. C. J. Maitre de Conf. * SUTTER (DUB), Mrs. M. T. Asst. * FELIX, J. M. Asst. * PERRIER. Mrs. H. Asst. * PLAS. Mrs. C. Att. de Rech. CNRS Rennes, Fac. des Sci., Lab. de Biol. Generale PICHERAL, B. Maitre-Asst. Rouen, Fac. Mixte de Med. et Pharm., Lab. d'Anat. Normale TARDIF. B. Prof. agr. CAPUANO, G. Asst. Saint-Martin-d'Heres (see Grenoble) Sannois, Inst. Pasteur de Paris, Serv. d'Embryol. Exper. * RAYNAUD. A. Chef de Lab. * RAYNAUD (CHAULIN-SERVINIERE), Mrs. J. Chef de Lab. * PIEAU, CI. Att. de Rech. au CNRS * VASSE, J. Att. de Rech. au CNRS Strasbourg, Musee Zool. de I'Univ. et de la Ville * GOUIN, F. J. Conserv. ' Strasbourg, Univ. de Strasbourg, Fac. de Med., Inst. d'Embryol. , * CLAVERT, J. M. J. Prof.. Dir. | * RUCH. J. V. Maitre de Conf. 1 * RUMPLER, Y. Chef de Trav. * GABRIEL-ROBEZ (KREMER). Mrs. O. * GERLINGER, P. Chef de Trav. Fac. des Sci., Lab. de Zool. et d'Embryol. Exper. VIVIEN, J. H. Prof., Dir. * THIEBOLD, J. J. Prof. FOLLENIUS, E. Maitre de Conf. MELLINGER. J. Maitre-Asst. DOERR (SCHOTT),Mrs.J. Maitre-Asst. STEFAN, Miss Y. Chargee de Rech. WENIGER, J. P. Charge de Rech. PETIT, A. Cherch. libre Talence, Univ. de Bordeaux, Fac. des Sci.. Lab. de Biol. Anim. * CAMBAR, R. Prof. * GIPOULOUX. J. D. Maitre-Asst. * GIRARD (DECHAMBRE). Mrs. C. Maitre-Asst. * ALBERT. J. Asst. * CHAMBOLLE. P. Asst. * ARNAULD. Miss E. L. Collab. techn. Lab. de Physiol. Gener. * DUTRIEU. Miss J. Maitre de Conf. * CERBELLE. J. C. Maitre-Asst. * GOURDOUX (DESTRADE), Mrs. L. Asst. * MOREAU, R. Asst. Lab. de Zool. Exper. * HAGET. A. Prof. * ROGUEDA (VIGNAU). Mrs. J. Maitre-Asst. * LOUVET. J. P. Maitre-Asst. * ALLfiAUME (BORDES),Mrs. N. Asst. * SUCH (RAZIMBAUD).. Mrs. J. Asst. * FOURNIER, B. Att. de Rech. * CAVALLIN (THOMAS). Mrs. M. Att. de Rech. * TAMARELLE (GARAUDY). Mrs. M. Att. de Rech. * RESSOUCHES (SELMES). Mrs. A. P. Ing. de Rech. Toulouse, Univ. de Toulouse, Fac. des Sci.. Lab. de Biol. Gener. NOUVEL. H. Prof.. Dir, * BEETSCHEN. J. C. Prof. * GASSER. F. Maitre-Asst. * JAYLET. A. Maitre-Asst. * DUPRAT (ESCUDIfi). Mrs. A. M. Att. de Rech. CNRS * FERRIER. V. Asst. * DEPARIS, P. Asst. 218 France Germany (West) Villc d'Avray * ROSTAND, J. Villcfranchc-sur-Mer, Station Zool. * LALLIER. R. A. Maitre de Rech au CNRS VUlejuif, C.N.R.S., Inst, de Rech. Scient. sur le Cancer PASCAUD. M. Prof.. Chief of Serv. Villeurbannc, Univ. de Lyon, Fac. des Sci., Sect, de Biol. Gen. et Appliquee * NIGON, V. Prof., Dir. * LEGAY, J. M. Prof. * BRUN, J. L. Maitre de Conf. * DAILLIE, J. Maitre de Conf. * TEULADE, P. Maitre de Conf. * FOURCHE, J. Maitre-Asst. * GUERRIER, P. Maitre-Asst. * GODET (NONNENMACHER), Mrs. J. Maitre-Asst. * GILLOT (PERDRIX). Mrs. S. Maitre-Asst. * PONTIER, J. Maitre-Asst. * PRUDHOMME, J. C. Maitre-Asst. * HEIZMANN, P. Att. de Rech. * de REGGI, L. M. Att. de Rech. * COULON (BUBLEX). Mrs. M. M. Att. de Rech. * BLANCHET, J. P. Asst. * PAV£, A. G. Asst. * de TURENNE, Miss M. Stag, de Rech. au CNRS GERMANY (East) Berlin-Buch, Deutsche Akad. der Wissensch. zu Berlin, Inst, fiir Zellphysiol. BIELKA, H. Dir. NOLL, F. Ober Asst. THEISE, H. Asst. GRUMMT, F. Asst. SCHULTZ, Miss I. Asst. Gatcrslebcn, Deutsche Akad. der Wissensch. zu Berlin, Inst, fiir Ku'lturpflanzenforsch. * PANITZ, R. Asst. * MULLER, A. J. Asst. BAUDISCH, W. Asst. SERFLING, E. Asst. WOBUS, U. Asst. Greifswald, Univ. of Greifswald, Med. School, Dept. of Obstet. & Gynecol. HORKf, Z. Oberarzt Jena, Friedrich-Schiller Univ., Mathem.-naturwiss.-techn. Fak., Sekt. Bioi.-Pflanzenphysiol. * AUGSTEN, H. Prof. Magdeburg, Med. Akad., Biol. Inst. SCHUNZEL, G. Rostock, Univ. Rostock, Med. Fak., Anat. Inst. * SCHUMACHER, G. H. Prof., Dir. * KRANTZ, Mrs. H. I.Oberarzt * FANGHANEL, J. wiss. Asst. Zool. Inst. ARNDT. E. A. Prof. (Abt. Meeresbiol.) PENZLIN, H. Doz. GERMANY (West) Aachen, Rhein.-Westf. Techn. Hochschule, Dept. of Anat. (see Basel, Switz., Anat. Inst.) Bamberg^ Staatl. Frauenklinik and Hebammenschule KRONE, H. A. Prof.. Dir. Berlin, Freie Univ. Berlin, Med. Fak., II. Anat. Inst, und Forschungsabt. fiir Elektronenmikr. SCHWARZ, W. Prof. (Anat.) MERKER, H. J. Priv. Doz. Inst, fiir Physiol. Chemie * TIEDEMANN, H. Prof.. Dir. * TIEDEMANN (WAECHTER), Mrs. H. Wiss. Asst. * FAULHABER. Miss I. E. W. Asst. * GRUNZ, H. Asst. * SCHMIALEK, P. Asst. I. Zool. Inst. * DOHLE, W. Dr.rer.nat. Berlin, Schering AG * ELGER, W. Bochum, Ruhr-Univ., Inst, fiir Zellphysiol., Abt. Biol. * BEINBRECH, G. Bonn, Friedr.-Wilhelms Univ., Landwirtschaftl. Fak.. Inst, fiir Landwirtsch. Zool. und Bienenkunde * WURMBACH, H. Prof., Head * KARB, B. Asst. Zool. Inst. DANNEEL, R. Prof., Dir. Bonn, Univ. Bonn, Anat. Inst., Abt. fiir Neuroanat. * FLEISCHHAUER, K. Prof. * GARWEG, G. * SCHLUTER, G. Braunschweig, Techn. Univ., Zool. Inst. * HAUENSCHILD, C. Prof. Diisscldorf, Univ. Diisseldorf, Med. Fak., Inst, fur Humangenetik und Anthropol. SCHADE, H. Prof.. Dir. * GROTE, W. Wiss. Asst. Mathem.-Naturwissensch. Fak., Zool. Inst. WADA, S. Asst. Erlangen, Univ. Erlangen-Niirnberg, Med. Fak., Anat. Inst. * MERKLE, U. Prof. Physiol.-Chem. Inst. HORSTMANN, H. J. Univ. Doz. Naturwissenschaftl. Fak., I. Zool. Inst. SIEWING, R. Prof.. Dir. * KORN, H. F. Univ. Doz. * SCHOLL, G. Wiss. Asst. Frankfurt, Univ. Frankfurt, Med. Fak., Anat. Inst. STARCK, D. Prof. 219 Germany (West) Inst, fiir Humangenet. und vergl. Erbpathol. * DEGENHARDT. K. H. Prof.. Dir. * KLEINEBRECHT, J. Wiss. Asst. Inst, fiir Kinemat. Zellforschung * BEREITER-HAHN. J. Asst. Zool. Inst. * HANKE. W. Prof. * LEIST. K. H. Freiburg, Max-Planck-Inst. fiir Iramunbiologie, Arbeitsgr. G. H. M. Gottschewski * GOTTSCHEWSKI. G. H. M. Prof., Head * ZIMMERMANN. W. Asst, * DENKER, H. W. Freiburg, Stadt. Museum fiir Naturkunde SCHNETTER. M. Doz. Leiter SCHWAIER, Miss A. ROSELER. P. F. Freiburg, Univ. Freiburg. Biol. Inst. I, Lab. fiir Chromosomenforsch. * HESS. O. Doz. Biol. Inst. I (Zoologie) * SANDER. K. Prof. * GERISCH. G. Doz. * WEYGOLDT. P. Doz. * KALTHOFF. K. Asst. LEHMANN. R. Giesscn, Univ. Giessen, Anat. Inst. * OKSCHE. A. Prof. PETERS. Th. Naturwiss. Fak.. I. Zool. Inst. * GOTTING, K. ]. Priv. doz.. Oberasst. Bad Godcsbcrg, Inst, fur Flugmedizin der D.F.V.L.R. * BRIEGLEB. W. Abt. leiter * TEUCHERT. Mrs. G. Wiss. Mitarb. Gottingen, Univ. Gottingen, Anat. Inst. * BLECHSCHMIDT. E. Prof.. Dir. * STEDING. G. Oberasst. * CHRIST. B. Asst. JACOB. Miss M. Asst. JACOB. H. J. Asst. I. Physik. Inst. * HOMANN. H. A. Guest Worker II. Zool. Inst, und Museum AX. P. Prof., Dir. Hamburg, Univ. Hamburg, Med. Fak.. Anat. Inst. * HORSTMANN, E. Prof., Dir. * WARTENBERG, H. Prof. * HOLSTEIN, A. F. Priv. doz. * BREUCKER. Miss H. Asst. Inst, fiir Humangenet. SCHLOOT. W. Univ.-Frauenklinik * STEGNER. H. E. Priv.-Doz. Inst, fiir Hydrobiol. und Fischereiwiss. LILLELUND, K. Prof.. Dir. * PETERS. N. W. Priv.-Doz. * BRAUM. E. Asst. * von WESTERNHAGEN. H. Hannover, Techn. Hochschule, Inst, fiir Botanik STANCE. Miss L. Prof. Germany (West) Heidelberg, Univ. Heidelberg. Bot. Inst. * BOPP. M. Prof.. Dir. Physiol. Lehrstuhl. Zool. Inst. * DUSPIVA. F. Prof.. Dir. * HANSEN-DELKESKAMP. Mrs. E. * SCHNETTER. W. Wiss. Asst. Heiligcnberg, Heiligenberg-Inst. * KRAUSE. G. Prof. * WOELLWARTH, C. von Asst. * KOCHER. W. Doz. * KOCHER-BECKER, Mrs. U. Asst. * PENTZ, S. Asst. Karlsruhe, Univ. Karlsruhe, Zool. Inst. * BRANDLE, K. A. Asst. Kiel, Neue Univ., Anat. Inst. * PEHLEMANN, F. W. Priv.-Doz. Koln, Max-Planck-Inst. fiir Himforschung, Abt. fiir allg. Neurol. WECHSLER, W. Oberasst. Koln, Univ. Koln, Inst, fiir Entw.physiol. * HARTE, Miss C. Prof. * POHLEY, H. J. Prof., Doz. * KIERMAYER, O. Doz. * MUTH, F. W. Asst. * HOFMANN, D. K. Asst. Zool. Inst. * NEUMANN, D. Prof., Dir. * EGELHAAF. A. Prof. * KUHN. O. Prof. (Emer.) * ENGLANDER, H. Prof. * VAHS, W. Prof. * ANTON, H. J. Doz. * HARTWIG, H. Doz. * JOHNEN, Miss A. G. Doz. * DARDA, S. H. Asst. * FISCHER, A. Asst. * HOCKER, W. Asst. * KUTHE, H. W. Asst. * LOBBECKE, E. A. Asst. Mainz, Univ. Mainz, Inst, fiir spez. Botanik * HACCIUS, Miss B. Prof. Zool. Inst. ANDRES, G. Marburg, Philipps-Univ., Inst, fiir Physiol. Chemie * SEKERIS, C. E. Oberasst. * WEIRICH, G. Asst. * SHAAYA, E. Asst. Zool. Inst. * KOECKE, H. U. Prof., Dir. SEIDEL, F. Prof. (Emer.) LUDTKE, H. Prof. * CLEFFMANN, G. Prof. * SCRIBA, M. E. L. Priv.-Doz. * KOCH, P. Asst. * SEITZ, K. A. Asst. Marburg, Univ. Marburg, Anat. Inst. RETRY, G. Prof., Dir. Miinchcn, Max-Planck-Inst. fiir Biochem. * REMBOLD, H. Priv.-Doz. 220 Germany (West) Italy Munchen, Univ. Munchen, Tierarztl. Fak., Inst, fiir Pharmakol., Toxikol. und Pharmazie * TEMPEL, K. Doz. Zool. Inst. * BOHN, H. Miinstcr, Univ. Miinster, Med. Fak., Anat. Inst. * ROLLHAUSER, H. Prof., Head ROLLHAUSER (TER HORST). Mrs. J. O. B. Inst, of Human Genet. * LENZ, W. Prof., Dir. * PAWLOWITZKI, I. H. Asst. Zool. Inst. t BIER, K. Prof. * ENGELS, W. Asst. * RIBBERT, D. Asst. * KUNZ, W. Asst. Saarbriickcn, Univ. des Saarlandes, Mathem.-Naturwissensch. Fak., Inst, fiir Genetik * KROEGER, H. Prof.. Dir. * ROBERT. M. Asst. * BURKART. T. Asst. * BOSSHARD, N. U. Asst. Stuttgart, Univ. Hohenheim. Inst, fiir Histol. und Embryol. * KNESE. K. H. Prof.. Dir. FISCHER, G. Asst. Zool. Inst. * PFLUGFELDER, O. Prof.. Dir. Tubingen, Max-Planck-Inst. fur Biol, Abt. Beermann * BEERMANN, W. Prof. MEYER, G. F. Doz. HAUSEN. P. Doz. * HENNIG, W. Asst. Tubingen, Max-Planck-Inst. fiir Zellbiol.. Abt. Bauer. Arbeitsgr. Biochem. Embryol. * CZIHAK, G. Head * BOCKSTAHLER. L. Asst. * SCHMEKEL, Miss M. L. Asst. Tiibingcn, Univ. Tiibingen, Anat. Inst. HINRICHSEN. K. Prof. MERTZ. M. Asst. Zool. Inst. GRELL, K. G. Prof. SCHWARTZ, V. Prof. * NETZEL. H. E. M. Asst. LEIBENGUTH, F. Asst. Zoophysiol. Inst. MULLER, W. A. Asst. Wilhclmshaven, Max-Planck-Inst. fiir Zellbiol. * HAMMERLING, J. Prof.. Dir. * SCHWEIGER. H. G. Abt. leiter * WERZ, G. Abt. leiter * DILLARD, W. Asst. Wiirzburg, Univ. Wiirzburg, Med. Fac. Dept. of Anat. * SCHIEBLER, T. H. Prof.. Head * VOLLRATH. L. Priv.-Doz. Fac. of Nat. Science, Inst, of Appl. Zool. * GOSSWALD. K. Prof., Head * SCHMIDT, G. H. Priv.-Doz. Zool. Inst. * KRAUSE, G. Prof., Dir. * KOCHER, W. Doz. * JUNG, E. Asst. * ACHTELIG, M. Asst. * WOLF, R. Asst. * EMMERT, W. Asst. GREECE Athens, Univ. of Athens, Fac. of Sci., Zool. Lab. and Museum KIORTSIS, V. Prof., Dir. ZAFIRATOS, K. Asst. MORAITOU (APOSTOLOPOULOU), Mrs. M. Asst MYTILINEOU, C. Res. Assoc. HUNGARY Budapest, Children s Hosp. "Paul Heim", Dept. of Congenital Malformations * BERNDORFER, A. Chief Surgeon Budapest, Hung. Acad, of Sci.. Inst, of Exper. Med., Morphol. Dept. GYEVAI (T6TH). Mrs. A. T. Res. Worker Budapest, Med. Univ.. Inst, of Histol. and Embryol. * TORO, I. Prof. * TOROK. L. J. Asst. Prof. * CSABA, G. Asst. Prof. * HORVATH. Miss C. Asst. * MOLD, Miss K. Asst. * RADOS. I. Asst. * TORO. I.. Jr. Asst. Pecs, Univ. Med. School, Dept. of Anat. SZfiKELY. G. Lect. STRAZNICKY. Ch. Asst. Szeged, Univ. Med. School. Dept. of Anat. * CSILLIK. B. Prof.. Chairman * KALMAN, G. Res. Asst. * KASA. P. Res. Asst. * KNYIHAR, Miss E. Res. Asst. IRELAND Dublin, Univ. College, Dept. of Zool. * RAMSAY (KUNZ), Mrs. Y. W. Lect. * DUKE, E. J. Asst. Lect. ITALY Arco Felice (Napoli), Lab. of Molec. Embryol. * MONROY, A. Prof. Bari, Univ. of Bari, Fac. of Med., Inst, of Human Anat. * AMPRINO, R. M. Prof.. Dir. * CAMOSSO, Miss M. E. Asst. * MAROTTI. G. Asst. * MITOLO. V. Asst. Bologna, Univ. di Bologna. 1st. di Anat. Comp. LEGHISSA. S. Prof., Dir. 221 Italy * MINELLI, G. Prof. ROSSINI, Miss M. C. Asst. GARAVINI, Mrs. C. Asst. DEGLI ESPOSTI, Miss A. M. Asst. QUAGLIA, A. Asst. 1st. di Anat. Umana Norm. OLIVO, O. M. Prof., Dir. LULLINI, Mrs. I. GALLIANI Asst. 1st. di Istol. ed Embriol. Gener. RIZZOLI, C. Prof.. Dir. CARINCI, P. Asst. MANZOLI, F. A. Asst. MANZOLI (GUIDOTTI), Mrs. L. Asst. Fac. of Sci., Inst, of Zool. * VANNINI. E. Prof., Dir. * STAGNI, Miss A. Prof. * ZAFFAGNINI, F. Prof. * GRASSO, M. Prof. * GARDENGHI, G. Asst. * DI GRANDE, Miss F. Researcher * ZACCANTI, F. Researcher Camcrino, Univ. di Camerino, Fac di Sci.. Cat. di Istol. ed Embriol. DE VINCENTIIS. M. Prof. 1st. di Zool. e Anat. Comp. BELLINI'GARDELLINI. Miss L. Asst. Prof. BOTTE. V. Asst. Prof. Catania, Univ. di Catania. 1st di Anat. Umana Norm., 2a Cattedra * PASSAPONTI, A. Prof., Dir. * MARRARO (CARNAZZA). Mrs. M. L. Asst. 1st. di Zool. * RANZOLI. F. Prof. * DE LUCA. V. Prof. * SICHEL, G. Prof. * BARBAGALLO (PATTI), Mrs. I. Asst. * VISCUSO, Miss R. Asst. Ferrara, Univ. di Ferrara, Fac. di Sci., 1st. di Anat. Comp. * RAUNICH, L. Prof. * SALVATORELLI, G. Asst. 1st. di Zool. * COLOMBO, G. Prof., Dir. * PINAMONTI. S. Prof. * MICCIARELLI (SBRENNA). Mrs. A. Asst. PETRIS, A. Asst. SBRENNA, G. Asst. Geneva, Univ. di Genova, 1st. di Anat. Comp. * MINGANTI. A. Prof. 1st. di Zool. * DELLA CROCE, N. Asst. Prof. * BETTANIN (BELGRANO), Mrs. S. Asst. Messina, Univ. di Messina, Fac. di Sci., 1st. Idrobiol. e Pescicolt. * COSTANZO, G. Asst. 1st. di Zool. e di Anat. Comp. * BOLOGNARI. A. Prof.. Dir. * ALBANESE (CARMIGNANI). Mrs. M. P. Asst. * DONATO (CELI) , Mrs. A. Asst. * CANNATA. F. Asst. Cat. di Istol. ed Embriol. Italy Milano, Univ. di Milano, Cattedra di Anat. Comp. ZAVANELLA. Miss T. Asst. Fac. of Med.. 2nd Chair of Human Anat., Anat. Inst. * PANNESE, E. Prof. 1st. di Istol. ed Embriol. Gen. PRETO PARVIS, Mrs. V. Prof. FORNI. Miss S. Asst. 1st. di Genetica * BARIGOZZI. C. Prof.. Dir. * HALFER. Miss C. Asst. * BAIRATI, A. Asst. * DOLFINI. Miss S. Asst. * ALBERGHINA (TONINI), Mrs. F. Fellow Cattedra di Embriol. e Morfol. Sperim. LEONE, V. CASTELLANI (CERESA),Mrs.L. Asst. 1st. di Zool. RANZI, S. Prof., Dir. CIGADA (LEONARDI). Mrs. M. Prof. LANZAVECCHIA. G. Prof. PARISI, V. Res. Assoc. COLLINI, Miss R. Asst. SAMUELLI, Miss C. Modcna, Univ. di Modena, Fac. di Sci. Fis., Mat. e Nat., 1st. di Anat. Comp. * BAFFONI, G. M. Prof.. Dir. * MARINI. Miss M. Asst. * FRATELLO. B. Asst. * LOMBARDO, F. Asst. Napoli, Univ. di Napoli. 1st. di Anat. Topogr. * BORGHESE. E. Prof.. Dir. ALESCIO, T. Asst. Napoli (see Arco Felice) Padova, Univ. di Padova. Fac. di Sci., 1st. di Biol. Anim. * SABBADIN, A. Prof. BATTAGLL^, B. Prof. * COLOMBO. L. Asst. * DANIELI, G. A. Asst. * BURIGHEL. P. Asst. Inst, of Gen. Biol. * LEVIS. A. G. Asst. Palermo, Univ. di Palermo. Fac. di Sci.. 1st. di Anat. Comp. * GIUDICE, G. Assoc. Prof. * MUTOLO, V. Assoc. Prof. * MAGGIO, Miss R. Assoc. Prof. * D'AMELIO. V. Assoc. Prof. VITTORELLI, Miss M. L. Asst. Prof. * MILLONIG, G. Res. Fellow * CECCARINI. C. Res. Fellow * RINALDI. Miss A. M. Asst. Prof. * CRIPPA. M. Asst. Prof. 1st. di Istol. ed Embriol. D'ANCONA (LUNETTA). Mrs. G. Asst. MINAFRA, S. Asst. DI STEFANO. L. Guest worker 1st. di Zool. * REVERBERI. G. Prof., Dir. * ORTOLANI. Miss G. Prof. 222 Italy Italy * MANCUSO. V. Prof. * DURANTE, Miss M. C. Prof. * D'ANNA, T. Asst. * FARINELLA (FERRUZZA). Mrs. N. Asst. * LA SPINA, Miss R. Asst. * PATRICOLO, Miss E. Researcher * MANSUETO (BONACCORSO). Mrs. C. Researcher * CUSIMANO (CAROLLO), Mrs. T. Researcher * MAJORCA (MONTELEONE). Mrs. A. Researcher * PUCCIA, E. Asst. * VILLA, Miss L. Researcher * PARRINELLO, N. Asst. Parma, Univ. di Parma, Fac. di Sci., 1st. di Zool. * SCHREIBER, B. Prof.. Dir. * RINALDI, Miss L. Asst. Pavia, Univ. di Pavia, 1st. di Anat. Comp. * GERZELI, G. Prof. * BOLOGNANI (FANTIN), Mrs. A. M. Prof. 1st. di Istol. e Embriol. * MANFREDI ROMANINI. Mrs. M. G. Prof., Dir. * FRASCHINI, Miss A. Prof. * PORCELLI, Miss F. Asst. School of Med., Dept. of Dermatol. * SERRI, F. Prof., Chairman * GIANNETTI. A. Asst. * CERIMELE. D. Asst. Perugia, Univ. di Perugia, Fac. di Med., 1st. di Biol. Gen. * LIOTTI, F. S. Prof.. Dir. * MIGLIORINI (BRUSCHELLI), Mrs. G. Asst. * ROSI, Miss G. Asst. * GIOVANNINI, E. Asst. * BIAGIONI, M. Asst. Fac. di Sci. Agr., 1st. di Zool. Gen. CASTIGLI (PITOTTI), Mrs. M. Prof., Dir. BELLONI. C. Asst. Fac. di Sci. Nat. 1st. di Anat. Comp. BONDI. C. Prof.. Dir. Pisa, Univ. di Pisa, 1st. di Anat. e Istoembriol. MASSART, C. Prof.. Dir. PERA, L. Prof.. Dir. * CONTE. G. Asst. 1st. di Zool. e Anat. Comp. * BENAZZI. M. Prof.. Dir. * BENAZZI (LENT ATI). Mrs. G. Assoc. Prof. * MANCINO. G. Res. Assoc. * PUCCINELLI, Mrs. I. Asst. * SCALI. V. Asst. * BARSACCHI. Miss G. Res. Assoc. * GREMIGNI, V. Asst. * MAZZA. M. Res. Assoc. Roma, C.N.E.N., Lab. di Radiobiol. Anim. * ZITO (BIGNAMI), Mrs. R. Invest. * FANTONI, A. Invest. GIACOMONI, D. Invest. Roma, Univ. di Roma, Fac. di Med., 1st. di Anat. Umana Norm. PALMA, A. Asst. Prof. 1st. di Biol. Gen. SPIRITO, A. Prof.. Dir. SANTORO D'ANGELO, Mrs. L. Asst. CUOMO, Miss M. Asst. BOFFI LUCARELLI, Mrs. A. M. Asst. Fac. di Sci., 1st. di Anat. Comp. "Battista Grassi" * STEFANELLI, A. Prof., Dir. * ROSSI, A. Asst. * BERTOLINI. B. Asst. CAPANNA. E. Asst. * FILONI. S. Asst. 1st. di Istol. ed Embriol. * URBANI, E. Prof., Dir. URBANI (MISTRUZZI), Mrs. L. Prof. Inc. * MONESI, V. Prof. * RUSSO-CAIA, S. Prof. Inc. * MOLINARO, M. Asst. 1st. di Zool. * PASQUINI, P. Prof., Dir. * MANELLI, H. Asst. Prof. * MASTROLIA, Miss L. Asst. * MANGIA, F. * STAMPA (DI CASTRO), Mrs. M. Sassari, Univ. di Sassari, Fac. di Sci. Mat. Fis. e Nat., 1st. di Zool. * LEPORI, N. G. Prof., Dir. * PALA, Miss M. Asst. * LISSIA (FRAU), Mrs. A. M. Asst. * ARRU, Miss A. Asst. Torino, Univ. di Torino, Fac. Med. e Chirurgia, 1st. di Anat. Umana Norm. * FILOGAMO. G. Prof.. Dir. * GABELLA, G. Asst. * CANTINO, D. Asst. * COSTA, M. Asst. * MACOTTA. V. Asst. * COMOGLIO. P. C. Asst. 1st. di Istol. ed Embriol. Gen. * MARCHISIO. P. C. Asst. Fac. di Sci., 1st. di Embriol. Sperim. * GUARDABASSI. Miss A. Prof.. Dir. * OLIVERO, M. Asst. * CAMPANTICO, E. Asst. Inst, of Biochem. * RINAUDO, M. T. Asst. * GIUNTA, C. Asst. * BRUNO, R. 1st. di Anat. degli Anim. Dom. * GODINA. G. Prof., Dir. * BARASA, A. Asst. 1st. di Fisiol. Gen. e Spec, degli Anim. Domest. e Chim. Biol. ROWINSKI, P. Prof. 1st. di Antropol. Criminol. * TESTA-BAPPENHEIM. I. Prof. Trieste, Univ. di Trieste, 1st. di Zool. e Anat. Comp. * GHIRARDELLI. E. Prof., Dir. * RADO LUSER. Mrs. G. Asst. * DI MARCOTULLIO, A. Asst. 223 Netherlands NETHERLANDS Amsterdam, Netherlands Cancer Inst. * ZEILMAKER, G. H. Amsterdam, Netherlands Centr. Inst, for Brain Research ARIENS, KAPPERS, J. Prof.. Dir. * SCHADfi, J. P. Assoc. Dir. * CORNER, M. A. Head Lab. of Developm. Physiol. * BOT, A. P. C. * JONGKIND, J. F. Head Histochem. £) Cytochem. Group Amsterdam, Univ. of Amsterdam, Fac. of Med., Anat-Embryol. Inst. * LIMBORGH, J. van Prof., Dir. * WOERDEMAN, M. W. Prof. (Emer.) * TRAMPUSCH. H. A. L. Sen. Lect., Head Div. of Exper. Morph. * LOS, J. A. Sen. Lect. * MADJEREK, Z. S. * DRUKKER, J. * VERWOERD. C. D. A. Res. Assoc. * HARREBOMfiE, Mrs. A. E. Res. Assoc. * TONNEYCK (MULLER), Mrs. I. Asst. * AMONS, F. Asst. * SMIT, P. Asst. * HOUTHOFF, H. J. Asst. * OOSTROM, C. G. van Asst. Fac. of Sci., Zool. Lab. * NAAKTGEBOREN, C. Sen. Sci. Off. * TA VERNE, M. Asst. * STEGEMAN, Miss J. H. J. Res. worker T.N.O. Amsterdam, Vrije Univ., Lab. of Anat. and Embryol. * NIE, C. J. van Groningcn, Univ. of Groningen, Fac. of Med., Dept. of Anat. & Embryol. WILDE, A. G. de Prof., Head BIJTEL, Miss J. H. Lect. PLEEGING, J. H. Chief Asst. GLAS, P. * JONGH, H. J. de Lect. Haren (Or.), Univ. of Groningen, Genet. Inst. * PIJNACKER, L. P. Sen. Sci. Off. Leiden, Univ. of Leiden, Fac. of Med., Anat. -Embryol. Lab. DANKMEIJER, J. Prof., Dir. LANDSMEER, J. M. F. Prof. OPPENHEIMER (DEKKER), Mrs. A. Lect. HOEFSMIT, Miss E. C. M. * GOEDBLOED, J. F. Sen. Sci. Off. * HUSON, A. Lect. Lab. for Cell Biol. & Histol. * GAILLARD, P. J. Prof., Dir. * ZAAIJER, Miss J. J. P. Lect. * THESINGH, Miss C. W. Sen. Off. Fac. of Sci., Dept. of Genet. * GLOOR, H. J. Prof., Dir. * BREUGEL, F. M. A. van Zool. Lab. * KUIJEN. C. J. van Netherlands * PRIESTER, W. de Sci. worker * SPREY, Th. E. Sci. worker * STARRE (van der MOLEN), Mrs. G. van der Nijmegen, Univ. of Nijmegen, Med. Fac, Dept. of Anat. and Embryol. LAMMERS, H. J. Prof., Dir. * VERHOFSTAD, A. A. J. Asst. * KEYSER, A. J. M. Asst. * WIJFFELS, C. M. Asst. Dept. of Biochem. * BONTING, S. L. Prof., Head * DAEMEN, F. J. M. Sci. Off. Zool. Lab., Dept. of Cell Biol. * BERENDES, H. D. Prof. (Zool.) Rotterdam, Med. Fac. Rotterdam. Dept. of Anat. and Embryol. * KREDIET, P. Lector Utrecht, Hubrecht Lab. (Intemat. Embryol. Inst.) * NIEUWKOOP, P. D. Prof.. Dir. * FABER, J. Sen. Sci. Off. * BOTERENBROOD, Miss E. C. (exper. morph.) * HARA. K. (photo- and cinematogr.) * LAWSON, Miss K. A. (tissue cult.) ' KONIJN, Th. M. (developm. physiol.) * BLUEMINK, J. G. (electron micr.) * UBBELS. Miss G. A. (histochem.) * SAAG. P. Th. M. van der (biochem.) * LAAT, S. W. de (biophys.) SALOMfi, B. Z. (chief librarian) * OUWENEEL. W. J. Res. Assoc. * DOUCET (de BRUINE), Mrs. M. H. M. Res. Assoc. Utrecht, Rijksinst. voor de Volksgezondheid, Dept. of Pharmacol. * GEBHARDT, D. O. E. Biochem. Utrecht, Univ. of Utrecht, Central Interfaculty * LINDENMAYER, A. Prof. Fac. of Med., Dept. of Med. Anat. and Embryol. * DOORENMAALEN, W. J. van Prof., Dir. * BRAHMA, S. K. Sen. Sci. Off. GROENENDIJK ( HUIJBERS ) , Mrs. M. M. * STARRE, H. van der Sci. worker Fac. of Sci., Biol. Ultrastruct. Research Unit * ELBERS, P. F. Lect., Head * BERENDSEN, W. Genet. Inst. * SCHARLOO, W. Prof . Zool. Lab. * RAVEN, Chr. P. Prof., Dir. * GEILENKIRCHEN. W. L. M. Lect. * VERDONK, N. H. * TIMMERMANS. Miss L. P. M. * LABORDUS, V. * BIGGELAAR. J. A. M. v. d. * BOON (NIERMEIJER), Mrs. E. K. * WAL, U. P. V. d. * DONGEN, C. A. M. van * ARNOLDS, W. J. A. 224 Netherlands Poland Vet. Fac, Vet. Anat. and Einbryol. Inst. * WIERTZ (HOESSELS), Mrs. E. L. M. J. Sen. Sci. Off. * WENSING. C. J. G. Sen. Sci. Off. Lab. for Vet. Physiol. * ROMIJN, C. Prof. * LOKHORST. Miss W. Wageningen, Agricult. Univ., Lab. for Entomol. WILDE, J. de Prof. SCHOONHOVEN, L. M. STAAL, G. B. SCHOONEVELD, H. NORWAY Bergen, Univ. of Bergen, Anat. Inst. HARKMARK, W. Prof., Dir. * FORSBERG, J. G. Prof. * ABRO, A. Asst. Prof. * KVINNSLAND, S. Asst. Prof. * STRAY (BREISTEIN), Mrs. L. Instr. Oslo, Univ. of Oslo, Anat. Inst. JANSEN, J. Prof. (Emer.) VAAGE, S. KORNELIUSSEN, H. K. Res. Fellow MUGNAINI, E. POLAND Krakow, Acad, of Med., Dept. of Biol, and Embryol. SKOWRON, S. Prof., Dir. RZEHAK, K. Res. Asst. SCISLAWSKI, A. Polish Acad, of Science, Dept. of Exper. Zool. SKOWRON, S. Prof., Dir. Dept. of Neuropathol. KALUZA, J. S. Krakow, Jagiellonian Univ., Dept. of Comp. Anat. SZARSKI, H. Prof., Head * GRODZIKJSKI, Z. Prof. (Emer.) * KILARSKI, W. Lect. * BYCZKOWSKA (SMYK), Mrs. W. Dept. of Anim. Genet. & Org. Evol. * KRZANOWSKA (DATKOWNA), Mrs. H. Head Dept. of Plant Physiol. * RYCZKOWSKI, M. Lect. Zool. Dept. SMRECZYlQSKI, S. Head * W^GLARSKA, Miss B. Asst. * KRZYSZTOFOWICZ, Miss A. Asst. * JURA. Cz. Dir. Lab. of Invert. Embryol. * TYSZKIEWICZ, Mrs. K. Asst. Inst, of Zootechn., Dept. of Reprod. Physiol., Histol. Lab. BIBORSKI, J. Head Krakow, Wyzsza SzkoJa Pedagog., Dept. of Zool. * JUSZCZYK, W. Chief * DOBROWOLSKI. J. Res. Asst. Eodz, Acad, of Med., Dept. of Histol. and Embryol. * FORTAK, W. Chief * LEONIENI. J. Asst. * KMIEC, B. Asst. * BOCZKOWSKA, Mrs. J. Asst. * WYSOCKA, Miss B. Asst. JLodz, Milit. Acad, of Med., Inst, of Pathol. Anat. BAGIl!mo/dea LINDSAY hybrids, interspecific & intergeneric, tt/-ucv Carnivora, Lagomorpha McGAUGHEY karyotype, congenital disorders, Homo MAKING — , effect of irradiation & mutagens, Aves, Rodentia SRB — in spontaneous abortions, ,.__,,, Homo PAWLOWITZK & malformations. Homo SASAKI & induced abortions. Homo MAKING — , lethal racial hybrids, Anura MOORE — , sex ratio, Homo f^f/^^ — , Teleostei HUVER —', X-irradiation, Rodentia McGAUGHEY Lacertilia KRAL lampbrush, fine structure, RNA, DNA & protein metabolism. Amphibia ^^hi^^ — , germinal vesicle, Orthoptera 'SH.Vtt _ Urodela BARSACCHI MANCINO Mammalia KRAL mapping of transcription events. Homo, Rodentia DOHERTY molecular structure during genetic actvity, Diptera GAY oocytes, relation to radiosensitivity, Mammalia ^'^^dic patterns, tissue culture, Artiodactyla HARRIS polytene, DNA, RNA & protein synthesis, normal & infected larvae, Diptera PA VAN — , gene activation, Diptera RIBBERT — , histones, Diptera ROBERT — , in vitro, Diptera WEIRICH — , proteins, Diptera CAVE — , puffing, induction & repression, Diptera BERENDES — — patterns, control mechanism, Diptera KROEGER — , — , RNA metabolism, Diptera DANEHOLT — , RNA metabolism, Diptera EDSTROM protein & RNA, Axes HUANG puff formation, mechanism, Diptera PAPACONSTANTINOU puffing patterns, Diptera COUNCE puffs, cytochemistry & fine structure, Diptera ^^ci — , lethal mutants, Diptera BREUGEL rearrangements, developmental consequences, Rodentia EICHER — following somatic recombination, developmental fate, Diptera MORATA replication, nuclear transplant embryos. Amphibia S^t,X^ KING role in development, Rodentia YANAGIMACHI differentiation, Diptera POULSON salivary gland, gene function, Diptera PANITZ , protein histochemistry, Diptera KATO , puffing & differentiation, Diptera BEERMANN sex-reversal, Anura MIKAMO supernumerary, effect on development, Orthoptera BERGERARD trophoblast cells, Rodentia SELLER Vrodela BRUNST Y, function in spermatogenesis, biochemistry, Diptera "^«pc*^ — , gene physiology, Diptera Htas CILIA morphogenesis & regeneration, blastula & gastrula, protein synthesis, Annelida, Echinoidea '^Pi'^iXS stereo-, ductus epididymidis, Rodentia LEEbON CINEMICROGRAPHY see Microcinematography CIRCULATION see also Vascular system neonatal, Artiodactyla NIE CLEAVAGE (& moi-ula, blastula) see also Blastocyst; Blastoderm; Blastodisc Anura KATAGIRI blastula formation, Coleoptera HAGET , ionic events, elecUic fields, cell migration, Anura ^^xT^dd?tt — , hatching enzyme, mode of action, ,cutt->a Echinoidea ISHIDA — . Na-f- release in blastocoel &. germ layers, Anura KOSTELLOW ^""'^'' MORRILL — , tryptophan metaboUsm, tissue specific enzymes, Anura Tirivi/ — , vasopressin-like hormone, Anura KOSTELLOW MORRILL block produced by antibodies, Anura SHAVER cell junctions, electron microscopy, ,,^.,tk,v Urodela BLUEMINK Cephalopoda "^n^RFN Cestoda OGREN cleaving force, origin & direction, i^ttdz-i-ta Anura KUHUIA '^""''' HAYAKAWA NAKAMURA cytodifferentiation. Amphibia cytokinesis, electron microscopy, ttt-a^ivti^ Urodela BLUEMINK — .microcinematography. Amphibia, „,o.„.wt Echinodermata, Pisces SlRAKAMi — , micrurgical studies, Anura, Crustacea, Echinoidea RAPPAPORT cytoplasmic division, initiating factors, Echinoidea MARSLAND dissociated blastomeres, release of «^^^^'" „ . „„pT, opmental factors, Echinoidea ^^^rr^v dry mass/water ratio, Echinoidea BEKLiitK dynamics, Echinoidea, Lamelli- ,, » ccir-rvf v branchia ^^^^^T^a^ Echinoidea *^^ w^ MIKl effect of antimitotic & radiomimetic drugs, _^,^, Urodela SENTEIN carboxylic acids, Urodela SENTEIN DNA, RNA & protein anti- T,,,Dvr» metaboUtes, Teleostei ^ d^d?vt t« UV irradiation. Gastropoda LABUKiJua electron microscopy, Urodela r^^VJi^l^ & cytochemistry, Rodentia RLMLJNAK & experimental study, Anura, ddv ^-^^''^ selmJX enzyme activity, mitotic index, induction, Anura , COWARD furrow induction by subcortical cytoplasma Urodela — position & advance, determimng i.T,pr>xA mechanism, Anura o^ni-iTcw interference microscopy, Echinoidea BLKtiitK. irregularities, biochemically induced, ^o.uivt Gastropoda viNinQHiTA mechanism, Echinoidea KlNUbHiiA — of cytodifferentiation, „„^t,t~vt Gastrlpoda ^ ^^^^^^"^'fmOTO metabolic rhythm, Echinoidea NEMOlU microcinematography, Anura, „^^^„^^,„_„„t^ Urodela BOTERENBROOD KARA DAN 244 mitotic apparatus, protein, Echinoidea MIKI , structure & function, Echinoidea KIEFER — spindle, disintegration by hydrostatic pressure, Echinoidea MARSLAND — structures, stabilization by D-O, Echinoidea MARSLAND molecular mechanisms, Rodentia MONESI mosaic eggs, ultrastructure, Lamelli- branchia HUMPHREYS non-cleavage, SH fluctuation, Echinoidea DAN nucleolar changes. Gastropoda DAUWALDER physiology, Echinoidea KOJIMA protein synthesis localization, autoradio- graphy. Gastropoda WAL & nucleic acid metabolism. Gastropoda BIGGELAAR — + RNA, activation of synthesis, Echinoidea WILT rate, relation witli rate of embryonic devel- opment, Teleostei JONES RNA metabolism, Gastropoda DAUWALDER spindle microtubules, origin & protein level, Echinoidea, Echiuroidea ANDERSON spiral, cell interactions GATHER suppression of one cycle, precocious formation of micromeres, SH cycle, Echinoidea DAN Teleostei KIRCHEN Urodela SAWAI CLOACA see Urogenital system CLONE(S) see Asexual reproduction; Cell(s); Cell heredity COELOM see Body cavities COLCHICINE see Antimitotic agents COLLAGEN Amphibia KATO biochemistry, connective tissue cells in vitro, Axes TRINKAUS deposition during metamorphosis, Anura REYNOLDS fibres, resorption, tail metamorphosis,, Anura ITO fibrillogenesis, Artiodactyla ALLEN lamellae, cornea, fibrous architecture, Aves TRELSTAD ligamentum nuchae, Artiodactyla BARTOS synthesis, cell differentiation in vitro, Aves COLEMAN — , pancreas & salivary gland in vitro, Rodentia BERNFIELD umbilical cord. Homo UYSAL wound healing. Mammalia WATTS COLOUR PATTERNS see Chromatophore(s); Pigment(ation) COMPETENCE (inductive) early stages, Urodela GRUNZ ectoblast, influence of actinomycin, Aves GALLERA ectoderm, Urodela JOHNEN neural & endo-mesodermal, blastula & gastrula, biochemical correlates, Urodela SAAG — & mesodermal, blastula & gastrula, histochemistry, autoradiography, Urodela UBBELS CONGENITAL MALFORMATIONS see Malformations CONNECTIVE TISSUE see also Fibroblast(s) biochemistry DORFMAN cartilage, bone, lung, kidney, histochemistry, enzymology, electron microscopy, Artiodactyla, Aves, Homo, Rodentia KNESE chorionic villi, histogenesis, Homo KOMINKOVA collagen, polymerization, tracer study, pupa, Lepidoptera ASHHURST components, biophysics & bio- chemistry MATHEWS differentiation of clones, biochemistry, cinemato^aphy, Aves TRINKAUS fibrillogenesis, Anura, Homo, Rodentia WATANABE filament formation in regeneration, Turbellaria PEDERSEN ligamentum nuchae, Artiodactyla BARTOS mast cell formation, molecular biology, Rodentia CSABA , histochemistry, ultrastructure, Rodentia SEFTALIOGLU , Rodentia BURTON plasma cells, subcutaneous, cytogenesis, Rodentia TOTO CORPUS ALLATUM experimental histophysiology, Insecta PFLUGFELDER CORPUS LUTEUM relation with embryo, Artiodactyla CORTEX see Cell(s); Egg(s) CORTISONE see also Steroids effects. Amphibia, Teleostei HAY MOOR HANKE LEIST JURAND ZUST ZUST hydro-, early effects in embryo, Aves, Rodentia — , effect on feather germs & tracts, Aves — , effect on skin & feathers, Aves — , sensitivity of dermis & epidermis, Aves ZUST influence on gestation & fetal development, Rodentia MERCIER teratogenesis, Aves, Mammalia CLAVERT CRANIUM see Skull see also Chondrocranium CULTURE (egg, embryo etc.) see also Organ culture; Tissue culture blastocyst, chemical teratogenesis, Rodentia MITCHELL — , cytology & endocrinology. Homo, Primates, Rodentia , BAKER — , effect of embryonic agents, Lagomorpha HAY — , implantation, Lagomorpha STEER — , — , Mammalia GLENISTER — , Rodentia LE GOASCOGNE blastoderm, Aves LUTZ — , incorporation & transport of labeled metabolites, Aves BAKER — , origin of asymmetry of heart and ovaiy. Aves Cestoda descriptive material, first 72 hours, Aves early differentiation, Rodentia LEPORI SMYTH LUCEY LEVAK SKREB SVAJGER — embryo, influence of genotype & environment on developmental rate, Rodentia McLAREN , influence of temperature, Lagomorpha ALLISTON — gastrula, Teleostei BRUMMETT — stages, various treatments, Artiodactyla POLGE egg, Artiodactyla, Lagomorpha ONUMA — , maturation, Rodentia lOANNOU embryo, carbohydrate metabolism. Homo, Rodentia STERN — , Diptera COUNCE — , drug bio-assay, Aves BOONE — , early post-implantation stage, metabolic requirements, Rodentia — , effect of teratogens, Rodentia — & fragments. Cephalopoda — , in serum, teratogenesis, Rodentia — , Mammalia GUNBERG SHEPARD TANIMURA MARTHY GUNBERG NEW PRESLEY — , morphogenetic movements & tissue differentiation, Rodentia DEUCHAR — , paedogenesis, Diptera W^NT — , Rodentia BENOIT NAKAYAMA — , teratogenic action of amino acid analogues, Rodentia KOCHHAR — . Urodela DOBROWOLSKI 245 CULTURE (contd.) embryonic cells, dissociated, surface properties & interactions, Ares VICKER fertilization, Carnivora, Lagomorpha, Rodentia HUNT formation of embronic membranes, Rodentia WRBA gastrula, Rodentia BENOIT growth-limiting medium, regional biochemical effects, Aves KLEIN malformations, Rodentia WRBA Mammalia BIGGERS GLENISTER metabolism & differentiation, Rodentia WRBA mutant embryos, Rodentia STEIN placenta, perfused, effect of gonadotropins on steroid synthesis, Homo CEDARD — , structure & hormones. Homo BAKER preimplantation stages, Rodentia WHITTEN protein metabolism in relation to growth & differentiation, Aves KLEIN Rodentia NADAMITSU YANAGIMACHI Teleostei CHAMBOLLE teratogenesis, ubiquinone, Aves MUSY trophoblast behaviour. Mammalia GLENISTER very young embryo, Artiodactyla, Lagomorpha, Rodentia ULBERG viviparous forms, Teleostei DEPECHE CYTOCHEMISTRY see Histochemistry CYTOGENETICS see Cytology CYTOLOGY (& cytogenetics) see also Chromosomes abortions, cytogenetics. Homo SANDAHL amniotic fluid, cell types, source & relation to normal or abnormal development. Homo FITZGERALD blastocyst, cytogenetics, Lagomorpha SHAVER Cheleutoptera SCALI congenital malformations & abortions, Homo KA.III , Artiodactyla ISHIKAWA cultured cells, Diptera ALBERGHINA DOLFINI Diptera COUNCE epithelium, regeneration, Rodentia DECK Gastropoda MANCINO SEMBRAT general FEDOROFF Hirudinea MANCINO PUCCINELLI larval development, Urodela NOWAKOWNA mesonephros, Aves AMADO neoplastic conversion of embryonic cells, in vitro, Rodentia MITCHELL oocyte, early & vitellogenesis, Anura DUMONT oogenesis, Diptera BROWN ovulation, fertilization & early development. Homo, Primates, Rodentia BAKER paedogenetic-bisexual cycle, Diptera CAMENZIND sex differences, Aves KOSHIDA Turbellaria PUCCINELLI CYTOSTATIC AGENTS see Antimitotic agents CYTOTOXIC AGENTS see Drugs DEDIFFERENTIATION see also Metaplasia cellular, Porifera MAURY — , regeneration & asexual reproduction, Actinozoa POLTEVA denervated limb, cytochemistry, Urodela HEARSON eye lens regeneration, Urodela YAMADA regeneration cells, Annelida BOILLY RNA synthesis, Amphibia BURGESS DEOXYRIBONUCLEIC ACID analogues, effect on development, Echinoidea GONTCHAROFF cytoplasmic, Amphibia BRACHET — , Anura WEBER WELLAUER — , in embryo, Amphibia BALTUS HANOCO — , oocytes & somatic cells SCHMERLING differentiating cells, physico-chemistry, Vertebrata BOLLUM DONNELLY KARASAKI MODAK SISKFN TRAURIG embryonic, effect of irradiation & alkylating agents, Aves TEMPEL exogeneous, biological effect, Aves, Rodentia LEDOUX extra, germinal vesicle, Orthoptera KUNZ extrachromosomal, origin & function, oogenesis & early stages, Orthoptera CAVE eye lens, autoradiography, Aves ANDERSON germ layers & eye, phase specific gene activity, Teleostei, Urodela VAHS injection into embryo of different strain, Aves MARTINOVITCH polyploid animals, Anura LAVALLE primer activity, eye lens, Aves BOLLUM MODAK puff formation, mechanism, larva, Diptera PAPACONSTANTINOU relation with cell differentiation & cell interactions, in vitro, Aves LEE relation with nuclear size, embryo, larva, adult & germ line, Ascidiae, Gastropoda BACCARINI REZFNDE SCHREIBER , postembryonic organogenesis. Gastropoda FALLIERI , spermatogenesis, Anura LAVALLE , Teleostei SANT'ANA 0'>-concentration, fibroblast, Aves ' MUSY yolk, oogenesis & early stages, Polychaeta EMANUELSSON replication in cultured cells, Diptera BARIGOZZI HALFER — , imaginal discs, Diptera MORATA satellite, function, in regeneration, Crustacea GRAHAM KERR SKINNER stage-specific, nuclear isolation, Anura ROLLINS synthesis, control, silk gland, Lepidoptera DE TURENNE — , cytoplasmic control, neurons, Rodentia JACOBSON — , differentiating cells, induced by virus, Aves LEE — during maturation. Amphibia, Echinoidea BRACHET — , hormonal regulation, Rodentia LAGUCHEV — in early development, Anura DAWTD SWANSON egg, Hemiptera FORREST — , interordinal hybrids, fertilization through pluteus, Echinoidea BROOKBANK — , lens fibre formation in vivo & in vitro, Artiodactyla, Aves PAPACONSTANTINOU — , — regeneration, Urodela EISENBERG — , limb regeneration blastema, Urodela HEARSON — , mammary gland, Rodentia ARMSTRONG — , mitosis, larval testis, Diptera PAPACONSTANTINOU — , non-mitotic, Rodentia COWARD — , oogenesis. Amphibia BALTUS HANOCQ — , — Anura FICQ — , relation with differentiation, Rodentia COWARD — , , pancreas & salivary gland in vitro, Rodentia BERNFIELD — , , skeletal muscle & mammary gland, Aves, Rodentia STOCKDALE — , role of nuclear & cytoplasmic factors, in vitro, Aves, Rodentia JANDIERI TUMANISHVILI — . uterus & placenta, Rodentia BACCARINI REZENDR SCHREIBER template activity, eye lens, Aves BOLLUM BORSTEL MODAK 246 transcription, site of hormone action, various stages, Lagomorpha CHURCH yolk, in blastoderm cells. Axes BRUCE EMANUELSSON DETERMINATION (embryonic) see also Induction biochemistry, Echinoidea LALLIER cell potencies, styligenic organ, Heteroptera PINET cellular, imaginal discs, Diptera HADORN — , relation with number of cell generations, Amphibia SLADECEK central nervous system, Urodela JACOBSON Diptera KALTHOFF early stages, Coleoptera KiiTHE , Gastropoda CLEMENT ectoderm, in solutions of inducing substances, Urodela KOCHER egg, gradients, Echinoidea H6RSTADIUS genital apparatus, triploid intersexes, Diptera LAUGE — disc, Diptera ULRICH head organs. Amphibia WOELLWARTH heart, temporal & spatial, Urodela DUNCAN molecular, melanophores, Urodela BRICK neural plate, Atiura ROSSI organ primordia, Lagomorpha, Rodentia GOTTSCHEWSKI ZIMMERMANN skin areas, Am4ra KOLLROS trans-, imaginal discs, Diptera HADORN DEUTERIUM DoO, effect on incorporation of labelled precursors, Echinoidea COUSINEAU — , stabilization of mitotic structures, Echinoidea MARSLAND DEVELOPMENT (general) see also Asexual reproduction; Life cycle(s); Morphogenesis Acarina KRZYSZTOFOWICZ action of pyridine nucleotides KAPLAN Amphineura BEBBINGTON Baikal forms, Teleostei TCHERNIAEV biochemistry of imaginal maturation, Insecta ROCKSTEIN Cheleutoptera SCALI chemical & biochemical changes NEWBURGH comparative study, different species & strains, Rodentia KAMEYAMA control of nematocyst distribution & tentacle number, Hvdroidea HEATH Crustacea ICHIKAWA RICE Cyclostomata BAXTER developmental pattern, relation to intragenome nucleotide sequence homology, Insecta, Mammalia, Tunicata LAIRD Diptera MILKMAN effect of antipituitary sera. Ares VENEZIANO artificial sweetners, Aves VENEZIANO chemicals, correlation with effect of enzymes, Echinodermata, Turbellaria HEIN environmental factors, Decapoda LUCAS — • — irradiation, Marsupialia BLOCK thermal stress, Diptera BRUST & supernumerary chromosomes, Orthoptera BERGERARD electron microscopy, Diptera PRIESTER , Insecta LAI , Tunicata GAUNTER environmental & genetic control, Teleostei FOWLER experimental study, Rodentia WILSON Gastropoda VISSER Hemichordata BURDON Hydroidea LYTLE Hymenoptera G6SSWALD Hirudinea PUCCINELLI in vitro, Cestoda SMYTH Microsporidia KRAMER morphological & physiological variations, various factors, Rhynchota DE REGGI Nemathelminthes KORN Nemertini IWATA nuclear, chromosomal & cytoplasmic changes, Anura DiBERARDINO Opisthobranchia BEBBINGTON parasitic forms, Copepoda COSTANZO parthenogenetic form, Cladocera BETTANIN DELLA CROCE patterns, Aves CAMERON plant virus vector, Homoptera KISIMOTO Protura FRATELLO strain differences, Nematoda LOWER Teleostei BALON temperature tolerance, Nematoda LOWER Tunicata MILKMAN Turbellaria GAUNTER PUCCINELLI variability, Aves MANNER Xiphosura SCROLL DEVELOPMENT (larval) see also Polymorphism (insects) amino acid requirements and intermediary metabolism, Coleoptera, Orthoptera DAVIS anatomy, Urodela BALLARD arm formation, molecular & cellular aspects, Echinoidea FINNEGAN LARRIVEE Brachiopoda FRANZeN Bryozoa STRoM cephaloaenesis, experimental study, Diptera SCHOELLER Cestoda VOGE comparative study, Invertebrata JaGERSTEN Decapoda LUCAS determination of larval & imaginal characters, experimental study, Diptera ALLEAUME diploid drones, Hymenoptera WOYKE effect of parasites, Diptera BRUST temperature, O2 & water flow, Teleostei BRAUM endocrine control, Decapoda HUBSCHMAN Entoprocta FRANZeN Gastropoda MAKURKIEWICZ growth, food changes, Cyclostomata BAXTER — & nitrogen excretion, effect of prolactin, Anura ARIMA holometabolic forms, Diptera, Hymenoptera EMMERT Lamellibranchia MAZURKIEWICZ SCHMIDT malformations, Teleostei BRAUM metabolism, end-products, Anura ARIMA moulting cycle, ultrastructure & physiology, Lepidoptera LOCKE Nemertea CANTELL parasitic forms, Copepoda IZAWA phospholipids & phosphatases, Diptera CHITNIS KAMAT Pogonophora JaGERSTEN polyamines, Diptera AGRELL HEBY Polychaeta BLAKE CAZAUX GIDHOLM MAZURKIEWICZ queen determining substance in royal jelly, Hymenoptera REMBOLD relation to parental generation & selection, Diptera, Lepidoptera LEGAY Scyphozoa WIDERSTEN thorotrast, uptake & fate, Cyclostomata BAXTER transitory organs, morphology. Gastropoda Malacostraca FIORONI tropical forms, Echinoidea, Mollusca D'ASARO veliger stages, structure, nutrition & digestion, Gastropoda FRETTER DEVELOPMENT (postembryonic, fetal) Acarina CASSAGNE Arachnida EMERIT LEGENDRE Chondrostei EMELIANOV Copepoda OOISHI Edentata BENIRSCHKE effect of hormones on nucleic acid & protein synthesis, Dictyoptera, Diptera SHAAYA STH, LTH & auxiliary hormones on growth, Aves H6CKER energy metabolism, Marsupialia ARNOLD SHIELD homeothermy, Marsupialia SHIELD hormonal regulation, Diptera BERENDES Insecta GOUIN Insectivora PORTMANN Myriapoda GOUIN 247 DEVELOPMENT (postembr.) (contd.) physiology, Lepidoptera, Coleoptera EIDMANN polymorphism, environmental factors, Homoptera LEES pouch fetus, respiratory control, anoxia tolerance, homeostatic mechanisms, Marsupialia ARNOLD SHIELD Rodentia PORTMANN role of prothoracic gland, Dictyoptera BODENSTEIN DEVELOPMENTAL GENETICS see Genetics DEVELOPMENTAL PATHOLOGY see Pathology DEVELOPMENTAL PHYSIOLOGY see Embryology (experimental); Embryology (physiological) see also Development DIAPAUSE blastocyst, factors causing resumption of development, Marsupialia TYNDALE egg, control of hydration, Anostraca SMITH embryonic, carbohydrate metabolism, Anostraca CLEGG — , effect of photoperiod & temperature, Diptera BRDST — , electron microscopy, biochemistry, Lepidoptera OKADA — , maternal endocrine glands, Mammalia BAEVSKY — , ultrastructure, Orthoptera LABOUR larval, effect of photoperiod & temperature, Diptera BRUST — , induction, Lepidoptera PENTZ metabolism, Insecta MOREAU Oligochaeta SAUSSEY physiology, Coleoptera, Lepidoptera EIDMANN pupal, blood antigens, Lepidoptera LENSKY — , RNA metabolism, effect of hormones, Lepidoptera BARTH Teleostei PETERS DIAPHRAGM see Body cavities DIET see Nutrition DIFFERENTIATION see also Metaplasia action of pyridine nucleotides KAPLAN RNA from embryonic organs, blastoderm fragments in vitro, Aves BUTROS adrenal gland, chorioallantoic graft, Aves CHEVALLIER after dis- & reaggregation, early embryo, Aves ZWILLING ATP synthesis, Teleostei, Urodela CRAWFORD biochemical, early gastrula, Teleostei BRUMMETT — , parotid gland, Rodentia GORDON biochemistry, Anura, Aves, Diptera, Rodentia URSPRUNG — , Anura SALLACH cell interactions, Amphibia HAYAKAWA NAKAMURA cells, electron microscopy, Teleostei THOMAS — in vitro, Scyphozoa SCHMID cellular, Anura, Aves L0VTRUP — , Aves CAMERON — , causal biochemistry, Urodela WILDE — , cytochemical, origin & significance, Anura, Urodela UBBELS — , Hydrozoa LESH — , imaginal discs, Diptera HADORN — , in spermatogenesis, Rodentia MONESI — , integument, epithelial-mesenchymal interactions, larva through metomorphosis, ultrastructure, in vivo & in vitro, Anura GOLDSMITH — , in vitro, Vertebrata CURTIS — , liver, biochemistry, Aves LE DOUARIN — , mechanism, early stages, Rodentia TARKOWSKI — & molecular aspects MOSCONA — , Oi-consumption, entropy, Anura, Rodentia, Urodela KUCIAS — , Polychaeta LESH — , Porifera MAURY — , regeneration, Anura, Hydroidea AOTO — , relation to hatching enzyme synthesis, Teleostei ISHIDA — , genetics ZITO — , ribosomal structure & function, Anura FORD — , role of histones, biochemistry, autoradiography, Rodentia MONESI — , — • — microenvironment, Aves SPRATT — , structural & functional, cartilage & bone. Mammalia MAZHUGA — , translational factors. Mammalia HOLLAND — , various techniques KESSEL chemical, egg, Pulmonata MORRILL chromatophores, Urodela DUNCAN chromosome behaviour, embryo, Diptera, Mammalia, Polvchaeta, Turbellaria MELANDER — changes, Urodela SIGNORET — , salivary gland, Diptera BEERMANN KATO cleavage, Amphibia HAYAKAWA NAKAMURA cormective tissue, clonal analysis, Aves TRINKAUS cytoplasmic fragments, Urodela WILDE denervated limb, cytochemistry, Urodela HEARSON early, autoradiography, Rodentia SOLTER SKREB — gastrula, Teleostei BRUMMETT — , individual cells, biochemistry, Anura DEUCHAR — , molecular mechanisms, Rodentia ZITO — , transplantation, culture, Rodentia LEVAK SKREB SVAJGER ectoderm, effect of Lithium, Urodela ENGLaNDER — , influence of homogenates of differentiating tissues, Aves, Urodela LOPASHOV NIKITINA effect of extra- & intracellular inorganic ions, Hydroidea MACKLIN hormones, electron microscopy, autoradiography, in vitro, Lepidoptera BERRY steroids, Vertebrata WURMBACH teratogens, Vertebrata WURMBACH thyroid hormone, Vertebrata WURMBACH tissue-specific antibodies, Anura SHAVER embryo in vitro, Rodentia DEUCHAR embryonic cells, in vitro, Diptera SEECOF in vitro, Urodela BEETSCHEN DUPRAT — , ultrastructure. Amphibia TAKAYA WATANABe epi- & hypoblast, electron microscopy, Aves KARLIN epithelial, genital region, regulative mechanisms FORSBERG explanted embryo, protein metabolism, Aves KLEIN eye lens fibres, Rodentia ARMSTRONG eye tissues in vitro, biochemistry, Aves WHITTAKER gene control, allophcnic animals, Rodentia MINTZ genetical, thsortical study NOTO genetics, Diptera BAKER genital apparatus, triploid intersexes, Diptera LAUGB germ layers. Mammalia OOSTROM VERWOERD Golgi complex, cell differentiation. Gastropoda DAUWALDER heart, role of intracellular materials, Urodela DUNCAN histochemistry, neonatal Uver, Rodentia MALET POURHADI TURCHINI imaginal disc cells, Diptera GEHRING — — , Diptera GLOOR , histochemistry, Diptera SPREY in cleaving eggs. Gastropoda GEILENKIRCHEN in vitro, Cestoda SMYTH , Rodentia WRBA isoamylases, genetic regulaton, Diptera DOANE isolated embryonic cells in vitro, Amphibia, Teleostei COUPE limb mesenchyme, normal & mutant, Aves FLINT lymphoid cells, immunoglobulin. Homo, Lagomorpha, Rodentia CEBRA maintenance in vitro, heart cells, Aves TAYLOR 248 muscle, striated, causal biochemistry, Urodela WILDE neoblasts in blastema, ultrastructure, TuThellaria SAUZIN — , Turbellaria OKUNO SUGINO nerve tissue in vitro VARON neurons, Rodentia LaVELLE nuclear, Amira KING — , chromosomal & cytoplasmic, Anura DiBERARDINO nucleic acid-protein ratios, Rodentia BRYAN oocyte, effect of actinomycin & histones, Anura FICQ organ primordia, Lagomorpha, Rodentia GOTTSCHEWSKI ZIMMERMANN pancreatic exocrine cells, Rodentia WESSELLS pigment cells, effect of amino acids, Aves FINNEGAN WIREN plasma cell in vitro, immunoglobulin synthesis, Rodentia ANDERSON potencies, blastoderm, Aves KOCH A V protein & nucleic acid metabolism, Amphibia FAULHABER quantitative cytochemistry, Vertebrata VAHS regional, protein synthesis, Anura, Urodela LANDESMAN relation with cell cycle, lens regeneration, Urodela EISENBERG division. Amphibia, Chondrostei DETTLAFF DNA synthesis & cell division, skeletal muscle & maiTimary gland, Aves, Rodentia STOCKDALE , pancreas & salivary gland in vitro, Rodentia BERNFIELD mitotic activity & DNA synthesis, Rodentia COWARD RNA synthesis, regeneration, Amphibia BURGESS Rodentia GOEDBLOED role of chromosomes, Diptera POULSON nucleic acids. Amphibia DENIS saUvary gland, gene function, Diptera BERENDES somatic & germinal tissues, gonad, Rodentia OZDZENSKI time preceding, retinal receptors, Aves MORRIS tissue, autoradiography, Vertebrata BRAHMA — , effect of hormones & antimetabolites, histochemistry, Aves, Rodentia ACHTELIK — , on enzyme synthesis BOELL — , in vitro, relation to developmental potential & stage, Lepidoptera BROOKS — , role of cell death. Amphibia KAWAKAMI undifferentiated & differentiated cells, equilibria, Turbellaria CHANDEBOIS ultrastructure, Coelenterata HAYNES — , RNA & protein synthesis. Amphibia JACOB virus nucleic acids as agents involved, Anura MIZELL DIGESTIVE TRACT see also specific parts argyrophile & argentaffin cells, mitotic rate, Homo SINGH & associated glands, experimental study, Anura CAMBAR differentiation, Ascidiae BURIGHEL duodenal mucosa, hormonal control, Aves BETZ electron microscopy. Mammalia BEGLEY experimental study, Aves LE DOUARIN functional development. Homo TAKITA morphogenesis, ultrastructure, embryo & larva, Anura ALBERT organ culture, Aves SIGOT Paneth cells. Homo SINGH postnatal, Insectivora MORRIS proteolytic enzymes. Amphibia, Aves FRATELLO vascular changes, perinatal, Rodentia MARSK DISAGGREGATION see Cell(s) see also Tissue culture DRUGS (& Other biologically active chemicals) see also specific classes of agents (Antimitotic agents etc.); Teratogenesis; Thalidomide action in vitro, Rodentia KAITILA LAHTI SAXEN antimalarial, teratogenesis, Rodentia SULLIVAN bio-assay, embryo in vitro, Aves BOONE blastotoxic, Vertebrata SEGAL chemosterilant, hempa, biological action & resistance, Rodentia, Teleostei PURKO cytotoxic agents FEDOROFF effect on development FRIEDKIN effects on embryo, Aves, Mammalia GEBHARDT , Edentata BENIRSCHKE fertilization & early development, Artiodactyla POLGE limb regeneration, Urodela GEBHARDT — ■ — ' nervous tissue, Urodela LaVELLE — ■ — pre-implantation stages, Lagomorpha SHAVER fetal toxicity tests. Mammalia SOMERS WARD Hempa, effect on embryonic cells & fibro- blasts, Rodentia, Teleostei JACQUES insecticides, action on egg & Ijirva, Insecta MORI medicinal plants, effects on embryo, Lagomorpha, Rodentia PERSAUD 3-methylcholanthrene, induction of drug metabolizing enzymes & Uver growth, Rodentia ARGYRIS muscle relaxants, placental transmission & teratogenic effetcs, Rodentia JACOBS neuroleptic, influence on fertility & fetal development, Rodentia, Lago- morpha TUCHMANN — , teratogenesis. Mammalia MERCIER neuropharmaca, effect on asexual repro- duction, Actinozoa POLTEVA — , regeneration, Hydroidea, Turbellaria LENIQUE norethindrone, effect on mother & fetus. Primates WHARTON phenobarbital, induction of drug metabohzing enzymes & liver growth, Rodentia ARGYRIS podophyllin, effect on skeleton, Rodentia DWORNIK prevention of inherited abnormilities, Rodentia KONYUKHOV radiomiraetic, antichromosome, depolarizing, effect on cleavage, Urodela SENTEIN Rauwolfia alcaloids, Rodentia MERCIER TUCHMANN reserpine, deserpidine, Rodentia MERCIER TUCHMANN resistance, tissue culture, Artiodactyla HARRIS stimulants & depressants, effect on heart primordium in vitro, Aves BUTROS sympathicomimetic, effect on regeneration, Turbellaria, Oligochaeta ROSI teratogenic, activity test, Aves, Rodentia JELINEK — , animal tests, Rodentia ERIKSSON theophylline, theobromine, caffeine, effects on fecundity & development, Anura, Rodentia CHENEY urethane, effect on neural tube & lung, electron microscopy, Rodentia HERMAN KAUFFMAN EAR see Auditory organ ECTODERM see Embryology (experimental) EGG(S) see also Blastocyst; Cleavage; Culture; Oogenesis; YoUc activation & inactivation, artificial, bio- chemistry, Hymenoptera L6BBECKE aged, cytogenetics, Lagomorpha SHAVER — , unfertilized, development, Tunicata FARINELLA ATP-ase & protein SH, localization, Echinoidea KYONO bilateral organization, Echinoidea RUNNSTR6M capsule, chemistry, Pulmonata MORRILL carbohydrate metabolism, nucleotides, Echinoidea ISONO chimaeras produced by fusion, Rodentia SELLER chromosomes, relation to radiosensitivity. Mammalia FRANCHI cleavage, Echinoidea HIRAMOTO 249 EGG(S) (contd.) components, formation GERLINGER — , morphogenetic function, Coleoptera SCHNETTER cortex, cytochemistry, electron microscopy, centrifugation, Mollusca ARNOLD — , localization of developmental control factors, Anura HEIM — , role in embryogenesis, UV micro-beam study, Gastropoda JURA cortical field & ooplasmic segregation. Gastropoda RAVEN — layers, structure, Echiiiroidea, Polychaeta, Lamellibranchia SAWADA — granules, lysis, Invertebrata EPEL , role in formation of hyaline & fertilization membrane, Echinodermata KANE cortical lesions, DNA, RNA & protein synthesis, Anura BRACHRT — tension, oocytes & eggs. Amphibia NILSSON cytochemistry & electron microscopy, Homo, Rodentia MARTINEK determination, gradients, Echinoidea H6RSTADIUS development in waterfree medium, Teleostei DOMURAT dynamic population patterns, Echinoidea SPRATT early cleavage, physiology & biochemistry. Mammalia BRINSTER effect of centrifugation. Amphibia KASYANOV temperature & salinity, Teleostei WESTERNHAGEN electrical properties. Amphibia KASYANOV electron microscopy, Anura LUCKENBILL , Invertebrata REVERBERI , Teleostei CHAMBOLLE , Tunicata LA SPINA energy metabolism changes at fertilization, Echinoidea AS AM I envelope, evolution, Arachnida WEYGOLDT enzyme activity, Cirripedia MINGANTI , variations, Diptera, Lepidoptera LAL PANT VARMA experimental study, Coleoptera JUNG fertilization membrane, biochemistry, electron microscopy , Echinoidea INOUE fertilized & cleaving, oxygen consumption, effect of methylated xantines, Echinoidea CHENEY — morphology & development, effect of maternal age, Rodentia JONES — , transport in female. Mammalia CLEWE fine structure, Echinoidea RUNNSTRoM & metabolism. Primates, Rodentia BAKER geometry, Aves SMART germinal, cytoplasm, Anura KOTANI , effect of UV-irradiation, Anura CZOLOWSKA , histological & experimental study, Anura CZOLOWSKA — determinant, structure & ultrastructure, Coleoptera BLUZAT — vesicle, physiology, Echiuroidea, Polychaeta, Lamellibranchia SAWADA , ultrastructure, Orthoptera KUNZ gynogenesis by heat treatment, Chondrostei VASSETZKY heat generation, Lepidoptera PAVE histone synthesis, Echinoidea MOAV implantation, comparative study, Mammalia STRAUSS — , electron microscopy, cytochemistry. Mammalia JIRSOVA — , Primates BUTLER incorporation of radioactive precursors, Polychaeta TWEEDELL information transfer from follicle. Gastropoda RAVEN in vitro culture, temperature & viability, Lagomorpha ALLISTON jelly, chemistry, physiology. Amphibia HUMPHRIES — coat & chemical factor in fertilization, Anura BARBIERI — , specificity in fertilization, Anura SHAVER K & Na content, ionic permeability, Echinoidea, Teleostei HORI macromolecules, transfer from mother, Anura NACE maturation, Cestodes OGREN — divisions, Gastropoda RAVEN — , gonadotropins. Amphibia, Chondrostei — , DNA synthesis, Amphibia, Echinoidea BRACHET — , changes in nucleus & cytoplasm, Amphibia, Chondrostei AISENSTADT DAVIDOVA DETTLAFF SCHMERLING SKOBLINA AISENSTADT DAVIDOVA DETTLAFF SCHMERLING SKOBLINA — , immunology, Chondrostei, Teleostei APEKIN — in vitro, ultrastructure, Rodentia lOANNOU — , metabolism, Echinodermata, Vrodela FICQ — , nucleic acid metabolism. Amphibia HANOCQ — regulation, Chondrostei, Teleostei FALEEVA — , specificity of nuclei, Amphibia — , temperature effects in vivo & in Amphibia — , time factors. Amphibia DETTLAFF vitro, DETTLAFF RUDNEVA DETTLAFF RUDNEVA meiosis, abnormal chromosomal behaviour caused by overripeness, Anura, Lagomorpha MIKAMO — , cytochemistry ROTH — , dynamics, Echinoidea, Lamelli- branchia VASSETZKY membrane, changes at fertilization, electron microscopy, Echinoidea INOUE — , genesis & function, Vertebrata GABAJEVA — permeability, activation, role of Ca, Anura MORRILL — , unfertilized & fertilized eggs, electron microscopy, Echinoidea HUMPHREYS BIGGERS HANSEN IVERSON MAZZA TSAFRIRI VINCENT metabolism. Mammalia — , Orthoptera mitotic apparatus, Echinoidea morphology, Hemiptera nucleic acid metabolism, Rodentia nucleolar biochemistry, Echinodermata nucleotides, acid-soluble, Echino- dermata YANAGISAWA — , — , Echinoidea ISONO nurse, cause of non-development. Gastropoda HADFIELD oocyte, atretic, ultrastructure, Urodela HUMEAU changes preceding ovulation, Rodentia KRAICER coelomic material transfer from coelo- mocytes, in vitro, Polychaeta SCHROEDER cortical tension. Amphibia NILSSON cytoplasmic DNA SCHMERLING development, Polychaeta TWEEDELL early, cytology, Anura DUMONT — differentiation, effect of actinomycin & histones, Anura FICQ — ultrastructure, Anura, Vrodela BILLETT envelope, ultrastructure, cytochemistry, Teleostei MALONE Golgi complex, Echinoidea BOLOGNARI hormonal interactions & protein synthesis, Anura HORTON isotopic labeling, Diptera FULLILOVE lipovitellins, Crustacea KERR maturation. Amphibia, Asteroidea, Homo, Mammalia BIGGERS SCHUETZ — , effect of 1-methyladenine, Asteroidea KANATANI — , electron microscopy, Asteroidea SHIRAI nuclear-cytoplasmic relationships, Teleostei MALONE - oviduct relationship. Amphibia HUMPHRIES respiration, Aves ribosomal synthesis, control, Orthoptera RNA uptake, Insecta ultrastructure. Amphibia — , Annelida — , Homo — & metabolism, Rodentia uptake of hemolymph proteins, Orthoptera -, maternal macromolecules & interaction with macromolecules in oocyte, Rodentia GLASS PRESS ALLEN BIER HUMPHRIES VILLA GONZALEZ lONNOU KUNZ 250 ooplasmic reaction system, experimental study, Caleoplera JUNG — segregation. Gastropoda, ARNOLDS Scaphopoda TIMMFRMANS VERDONK , molecular basis. Gastropoda DAVIDSON HOUGH , Pulmonata MORRILL ooplasm transplantation, Coleoptera SCHNETTER oosome, early stages, Hymenoptera ACHTELIG overripeness, intrafoUicular, causing abnormal chromosomal behaviour in meiosis, Anura, Lagoniorpha MIKAMO oviposition, oviducal secretions, fluorescence microscopy, histochemistry, Anura SHAVER ovulation, cytology & endocrinology. Homo, Primates, Rodentia BAKER — , effect of X-rays, Rodentia SMIT TRAMPUSCH — , histochemistry, electron microscopy, Rodentia SJOLTE — , hormonal control, Rodentia STERN — in vitro Rodentia NADAMITSU — , luteinizing hormone, Carnivora HAMNER — , role of pituitary gonadotropins, Artiodactyla, Rodentia ROBERTSON — time, Primates HENDRICKX perivitelline fluid, Anura SALTHE , in waterfree medium, Teleostei DOMURAT phosphagens, Echinodermata YANAGISAWA physical properties, Echinoidea HIRAMOTO physiology & biochemistry, Mammalia BRINSTER polar lobe, cytology, Lamellibranchia FUKE polyphenolic substances, electron microscopy, Turbellaria GERZELI protein, actin-like, Echinoidea MIKI protein, Insecta KOCH — ■ synthesis, Echinoidea IKEDA regulation, Echinoidea PIATIGORSKY reactivity to activation, genetic control, Lepidoptera ASTAUROV recovery at critical cycle stages, Primates ECKSTEIN respiration. Gastropoda GEILENKIRCHEN — , relation with embryonic mortality, Artiodactyla TORRES resting, Cladocera BETTANIN DELLA GROCE ribosome formation, control, Echino- dermata VINCENT RNAse, inhibition by bentonite, Echinoidea COUSINEAU RNA polymerase, Anostraca lYEIRI rotation in utero, relation with symmetry, Lacertilia RAYNAUD shell, formation & structure, Aves HEYN — , structures & properties, Aves TYLER storage, Artiodactyla, Lagomorpha ONUMA OTSUKT structure, genetics, Diptera COUNCE superovulation, fertilization & development of eggs, Artiodactyla TORRES transfer, interspecific & intergeneric, Anura SHAVER — , Lagomorpha ADAMS — , Mammalia JIRSOVA — , non surgical, Artiodactyla SOMA SUGIE transplantation, Artiodactyla POLGE — , Rodentia ZEILMAKER transport, electron microscopy, cyto- chemistry, Mammalia JIRSOVA — , Lagamorpha, Rodentia HARPER tubal transport. Mammalia NOYES unfertilized, messenger RNA, Echinoidea RINALDI — , nucleated & non-nucleated fragments, amino acid incorporation, Tunicata MANSUETO — , transport in female. Mammalia CLEWE various metabolites, Diptera, Lepidoptera LAL PANT VARMA vitelline membrane, relation to yolk formation, Crinoidea ALBANESE water & ion fluxes, oocyte, Anura DICK white, lysozyme, Aves NONAMl — , role in development, Aves FRITZ — & yolk, nucleic acids, Aves NONAMl X-irradiation, nucleus & cytoplasm, Diptera ULRICH zygote development, physiological, bio- chemical, Lagomorpha STAPLES EGG MEMBRANES see Egg(s); Embryonic membranes EGG SHELL see Egg(s) ELECTRON MICROSCOPY see also Subcellular components abnormal tissues from mutants, Rodentia JOHNSON accessory glands, male, Diptera ACTON adipose tissue, mitochondria, Lagomorpha, Rodentia BARNARD adrenal cortex, biochemistry, culture, Rodentia ROOS — , medullary cells, Rodentia WOOD amitosis, Vertebrata PEHLEMANN amnion, Lagomorpha, Rodentia VARMA — , Mammalia CHALLIER Auerbach's & Meissner's plexus, Mammalia CANTINO autonomic ganglia, adrenergic inhibitory terminals, Rodentia CSILLIK KALMAN KNYIHAR autoradiography, kidney, Uver, pancreas, Aves DOSSEL — , RNA & basic proteins, oogenesis, Echinoidea SANCHEZ — , — & protein synthesis, differentiating cells. Amphibia JACOB Bidders organ, Anura TEMPLE blastocyst, implantation, Lagomorpha STEER — , — Mammalia GLENISTER — , Lagomorpha, Marsupialia TYNDALE blastoderm, epi- & hypoblast, Aves KARLIN blastomeres, mosaic eggs, Lamelli- branchia HUMPHREYS bone, Aves, Mammalia GAILLARD brain, area postrema & subfornical organ, Carnivora, Primates WARTENBERG — , neuro-ophthalmic structures, Tetrapoda WEIDMAN cells, contacts, early embryo, Aves TRELSTAD — in vitro, motility. Amphibia FREED — , junctions, early stages, Urodela BLUEMINK — , membrane & cytoplasmic structures, early stages. Gastropoda BERENDSEN ELBERS — , movements in early embryo, Rodentia NEWMAN — , surface, Aves LESSEPS — , — & contacts OVERTON — undergoing morphogenetic movement, Anura BAKER central nervous system, Aves LYSER cerebellum, histogenesis, Rodentia DADOUNE Cestoda COLLIN chemoreceptor cells, Carnivora, Homo, Rodentia KRAUS chromatophores. Amphibia BAGNARA — , cytodifferentiation. Amphibia OBIKA cleavage PERRY SELMAN — , cytokinesis, Urodela BLUEMINK — , Rodentia REMENAR — , Urodela SENTEIN combined with cytochemistry, nucleolus, salivary gland, Diptera JACOB connective & supporting tissue, Artiodactyla, Aves, Homo, Rodentia KNESE contact inhibition, myocardioblasts, Aves BETCHAKU cornea, Aves ZINN — , epithelial-mesenchymal interactions, position of Golgi complex, Aves, Rodentia TRELSTAD chromatin, Diptera MAHOWALD chromosome puffs, Diptera RASCH corneal stroma, collagen lamellae, Aves TRELSTAD cutaneous nerve pattern, effect of X-rays, Aves M AUGER cytochemistry & autoradiography, germ cells, Rodentia WEAKLEY — , nucleolus, salivary gland, Diptera JACOB — , oviduct, cell types. Amphibia BERTOLINI — , placenta, Rodentia WEISHEIT 251 ELECTRON MICROSCOPY (contd.) cytoplasmic components, influence on gene transcription, Amphibia, Gastropoda GEUSKENS decidual reaction. Mammalia SANANES dentine, Teleostei HEROLD developmental stages, Annelida VILLA , Tunicata GAUNTER diapausing embryos, Orthoptera LABOUR differentiating cells. Amphibia JACOB differentiation, Coelenlerata HAYNES — , embryonic. Amphibia TAKAYA WAT AN A Be digestive tract, embryo & larva, Anura ALBERT Diptera BAIRATI PRIESTER ductus deferens, Homo HOLSTEIN early development, Echinoidea MILLONIG , Vertebrata BALINSKY — embryo, Gastropoda SATHANANTHAN — stages. Amphibia NAKAMURA , Marsiipialia TYNDALE , Rodentia STERN effect of barbituric compounds, Aves OJEDA heterologous RNA on fibroblasts, Aves, Rodentia EWART SANN egg activation, Echinoidea MILLONIG — , Anura LUCKENBILL — & blastocyst, Homo, Rodentia MARTINEK — cortex, Mollusca ARNOLD — , Echinoidea RUNNSTR6M — implantation. Mammalia JIRSOVA — , Invertebrata REVERBERI — membranes, changes at fertilization, Echinoidea INOUE , unfertilized & fertilized eggs, Echinoidea HUMPREYS — , Teleostei CHAMBOLLE — transport. Mammalia JIRSOVA — , Tunicata LA SPINA embryo, Anura GIPOULOUX — , certain features. Amphibia, Diptera PERRY WADDINGTON — , Echinoidea SCHMEKEL — , effect of temperature, Aves CRACIUN PREDA — , encysted, Anostraca HUMPHREYS _ Homo BLECHSCHMIDT — , Invertebrata MANCUSO — , Rodentia PRESLEY — , Teleostei BRUMMETT — Turbellaria LB MOIGNE — , wild-type & mutant, Diptera MAHOWALD embryonic cells in vitro, effect of actinomycin D, Anura JONES — diapause, Lepidoptera OKADA — fine structure, chemical treatment, Echinoidea HEROLD — organs, Aves DOSSEL endocrine control of differentiation, Lepidoptera BERRY — glands, Cetacea, Pinnipedia YOUNG , Vertebrata PEHLEMANN — organs, Crustacea MEUSY , hypophysectomy, Aves DOSSEL endo- & ectomesenchyme, Vrodela FINNEGAN epidermal wound healing, Anura LUCKENBILL excretory system, Vertebrata GIBLEY eye lens, Aves ZINN , Mollusca ARNOLD — , Tetrapoda WEIDMAN — , Urodela DICKSON fat body, Coleoptera LABOUR fertilization, Chondrostei, Lamellibranchia, Teleostei GINSBURG — , Homo, Primates ZAMBONI — , Invertebrata COLWIN — membrane, Echinoidea INOUE — , Tunicata URSPRUNG fetal membranes. Homo KERSE fin rays, regenerating, Teleostei KEMP flight muscle, mitochondria, Hymen- optera HEROLD gametes & fertilization, Annelida, Echinodermata, Mammalia FRANKLIN — , Polychaeta FALLON gastrula & neurula, Anura BAKER germ cells, female, Rodentia lOANNOU , Homo WARTENBERG , Invertebrata, Vertebrata AFZELIUS , normal & irradiated. Primates, Rodentia FRANCHl , Reptilia HUBERT germinal determinant in egg, Coleoptera BLUZAT — vesicle, juxta-nucleolar granules, Anura SALLES glycogen, oocyte through early gastrula, Anura VAN GANSEN gonads. Homo WARTENBERG — , interstitial cells, Aves SCHEIB haploid & diploid tissues, Anura FOX HAMILTON hard tissues. Mammalia BOYDE heart, Aves NAKAMURA — , electrophysiology, Rodentia GROS — , Lagomorpha, Rodentia CHALLICE — , part, teratogenesis, Aves BIESENBEEK DRUKKER LAANE LOS — , Rodentia GARGOUIL — , Rodentia, Urodela PAGER Herbst's & Grandy's corpuscle, cholinesterase, Aves SAXOD histochemistry, alkaline phosphatase, Echinoidea MILLONIG — , neuroblasts, spinal ganglion, Aves PANNESE Hofbauer cells of placenta, Carnivora, Homo, Rodentia KOMINKOVA hypophysis. Homo, Rodentia HACH imaginal discs, Diptera FRISTROM induction systems, Anura EAKIN KELLEY Insecta LAI insular tissue, Rodentia DE HOYOS integument, nervous system, coelom & yolk sac. Cephalopoda FIORONI — , Trematoda LYONS intestinal epithelium. Mammalia YAMAMOTO — . — , metamorphosis, Anura HOURDRY — intramural nerve plexus, Rodentia GABELLA intestine, Mammalia BEGLEY — , Rodentia VOLLRATH kidney, electron autoradiography, Aves DOSSEL — tubulogenesis in vitro, Rodentia WARTIOVAARA limb bud, epithelial-mesenchymal inter- actions, position of Golgi complex, Aves, Rodentia TRELSTAD liver, electron autoradiography, Aves DOSSEL — , Mammalia HATAE — , neonatal, Rodentia MALET POURHADI TURCHINI lung, effect of urethane, Rodentia HERMAN KAUFFMAN — epithelium, part, action of heterologous mesenchyme, Aves DAMERON MARIN lymphoid organs, in vivo & in vitro COMOGLIO mast cell, Rodentia SEFTALIOGLU , Vrodela SETOGUTI melanophores, pigment granules, Teleostei BEREITER membrane system of cells, changes during oogenesis, Echinoidea BAL mesenchyme cells, primary, Echinoidea UEMURA mesonephros, Aves RODRIGUES metamorphosis, Anura WATANABE mitochondria, Golgi apparatus and other cytoplasmic membranes SJ6STRAND — , muscle, Artiodactyla LEESON molecular morphogenesis SJ6STRAND moulting cycle, Lepidoptera LOCKE muscle degeneration, Anura MUNTZ — fibres, skeletal, postnatal, Rodentia GAUTHIER PADYKULA TAYLOR mutants, Diptera PERRY WADDINGTON myelin sheaths, central nervous system, Rodentia PETERS VAUGHN myoblast, relation between myofilaments & ribosomes, Aves, Homo, Rodentia LARSON myocardium, Aves RODRIGUES necrosis in ontogeny, Aves, Homo MOTTET Nematoda COLLIN neoblasts, Turbellaria KISHIDA LENDER 252 nerves & glia, olfactory bulb, Rodentia nervous system, Ares neural crest, Ares , pigment cells, Aves neural gland, Asciiiiae neural tube, effect of urethane, Rodentia HINDS ADLER GONZALEZ FINNEGAN WIREN GEORGES neuroglial cells, Rodentia neuromuscular junctions, Rodentia HERMAN KAUFFMAN PETERS VAUGHN GAUTHIER PADYKULA TAYLOR neurulation, Urodela L6FBERG nucleolar changes, lens regeneration, Urodela DUMONT nucleolus, oocyte through early gastrula, Anura VAN GANSEN nurse eggs. Gastropoda HADFIELD oocyte, Amphibia HUMPHRIES — , Annelida VILLA — , atretic, Urodela HUMEAU — , early, Anura, Urodela BILLETT — envelope, Teleostei MALONE _, Homo GONZALEZ — , lampbrush chromosomes, nucleolus, nucleoplasm. Amphibia MILLER — maturation, Asteroidea SHIRAI — , polyphenolic substances, Turbellaria GERZELI oogenesis. Amphibia HUMEAU — , Cladocera ZAFFAGNINI oogenesis, Diptera MAHOWALD — & early stages, Diptera MAHOWALD — , Echinoidea ENDO TSUKAHARA — , Homo STEGNER — , Homo, Mammalia, Urodela WISCHNITZER — , Invertebrata MANCUSO — , Polvchaeta DHAINAUT — , Sipimculida N0RREVANG — , spermatogenesis, Hydroidea STAGNI — , Teleostei GoTTING YAMAMOTO — , Turbellaria GREMIGNI oogonia & oocytes. Primates, Rodentia BAKER organogenesis in vitro, Dictyoptera BULLIERE ovulation, Rodentia SJOLTE pancreas, electron autoradiography, Aves DOSSEL — , metamorphosis, Anura BEAUMONT — , Rodentia PERRIER parotid gland, biochemistry, Rodentia REDMAN , functional differentiation, Rodentia BLUEMINK peripheral receptor organs, Homo, Mammalia CAUNA photoreceptors, Nemertea VERNET pineal organ, Aves, Mammalia, Reptilia COLLIN , Carnivora, Primates WARTENBERG placenta, Cetacea, Pinnipedia YOUNG — , combined with cytochemistry, Rodentia WEISHEIT — , effect of teratogens, Rodentia KERNIS — , Homo, Mammalia VACEK — , Homo, Primates, Rodentia PANIGEL — , Rodentia TIBBITTS placental membrane, Rodentia HERNANDEZ Porifera LEVI prechordal plate, Aves, Homo, Mammalia KRAUS primitive streak, Aves, Mammalia VACEK pronephros, growth & degeneration, Anura FOX — , mesonephros, Anura CAMBAR proximal renal tubules, excretory activity, ultrastructure, Rodentia ROLLHaUSER quantitative, central nervus system, Vertebrata JELINEK regenerating cell & tissues, Urodela SCHMIDT regeneration blastema, Turbellaria BETCHAKU SAUZIN Remak's ganglion, Aves CANTINO renal carcinoma, differentiating, Rodentia GIBLEY retina, receptor cells SJ6STRAND ribosomes during development, Anura DECROLY — , oocyte through early gastrula, Anura VAN GANSEN Rodentia STEGNER satellite cells, spinal ganglion, Aves PANNESE scanning & transmission, epiboly & cell differentiation, Teleostei THOMAS skeleton, metamorphosis, Anura KEMP skin, Aves, Urodela SENGEL — , cell death & differentiation, epithelial- mesenchymal interactions, Anura GOLDSMITH — derivatives, Aves, Rodentia KISCHER — , hypersensitivity reactions, Anura, Homo, Rodentia FORTAK — , Teleostei KREJSA LUSE somite mesoderm, Aves GoNENCJ spawning, Asteroidea SHIRAI sperm, ultrastructure, normal & patho- logical, Artiodactyla BIRCH BLOM spermatogenesis, mutants, Rodentia BRYAN spermatozoa, apyrene, Lepidop- tera FRIEDLANDER — , Aves BOONE — , Hymenoptera LENSKY — & spermatogenesis, Acarina, Chilopoda, Diplopoda BREUCKER HORSTMANN spermiogenesis, Collembola BYCZKOWSKA spicules, Echinoidea HEROLD spinal cord, fetus. Homo GAMBLE , Rodentia VAUGHN spinal pterylae, effect of X-rays, Aves M AUGER striated muscle, Aves, Gastropoda, Orthoptera, Teleostei TAHMISIAN stylet & styligenic organ, Heteroptera PINET subcommissural organ, Homo, Mammalia LEONIENI sympathetic neurons & neural connections, Aves CANTINO tail degeneration, Anura FOX — primordium, Anura VACEK taste buds, Hotno SEVCENKO teratogenesis & developmental pathology, Rodentia TORO thymus, in vivo & in vitro COMOGLIO thyroid gland, Aves HILFER tonofilaments, epidermis, Teleostei BEREITER tooth germ, Urodela ROUX tumours associated with embryonic organs, Aves CUMINGE Turbellaria GAUNTER MacRAE umbilical vesicle, vascular anatomy, physiology, Rodentia Le GOASCOGNE undifferentiated cells, activity, normal & regenerating animals, Turbellaria CHANDEBOIS vegetative ground plexus, Rodentia CSILLIK KNYIHAR vertebral cartilage, Aves STRUDEL wound healing, Anura BAKER yolk formation, Aves BELLAIRS ENGLAND — , Holostei KILARSKI — origin. Gastropoda HADFIELD — platelets, Agnatha, Holostei GRODZINSKI — sac. Homo NAVARATNAM placenta, lipid transport, Rodentia GAUTHIER PADYKULA TAYLOR , Selachii FORD HALL ELECTROPHORESIS see Biochemistry etc. ELECTROPHYSIOLOGY see Biophysics EMBRYO - MATERNAL RELATIONSHIPS antibody transfer, perinatal, via placenta, fetal membranes, mammary gland, gut, Rodentia ANDERSON early stages, Artiodactyla MOOR effect of uterine contractions on fetal EEG, Homo GARCIA AUSTT embryo transfer, early stages, Artiodactyla ROBISON immunology. Mammalia HEMMINGS — & nutrition, Rodentia ZIMMERMANN — , Rodentia KIRBY incompatibility, Lagomorpha, Rodentia DAVID 253 EMBRYO-MAT. REL. (contd.) in intergeneric hybrids, immunology, Artiodactyla HANCOCK McGOVERN maternal macromolecules, uansfer to oocyte & embryo, interaction with egg & embryonic macromolecules, Rodentia GLASS — metabolic status, Lagomorpha, Rodentia, GOTTSCHEWSKI physical & physiological, Artio- dactyla ALEXANDER pre-implantation stages, egg transfer, Lagomorpha ADAMS proteins from mother into early embryo, Lagomorpha KULANGARA role of corpus luteum, Artiodactyla HAY MOOR EMBRYOLOGY (experimental) see also specific stages; Determination; Gradients; Induction; Morphogenesis; Organization; Regulation animalization, vegetalization, chemical agents, Arachnoidea EHN Anthozoa CONAN appendices, Cheleutoptera FOURNIER Arachnoidea HOLM Aves STEDING axial organs, segmentation, Aves CHRIST blastokinesis, Insecta SANDER cell heterogeneity, cytochemical, Anura, Vrodela UBBELS — interaction, Echinoidea MUTOLO cell-lineage, Li-treated and heat-treated embryos, Gastropoda VERDONK — , relation to head pattern. Gastropoda VERDONK Cestodes OGREN Coleoptera SCHNETTER cortical field. Gastropoda RAVEN development in waterfree medium, Teleostei DOMURAT differentiation potencies, blastoderm, Aves KOCHAV Diptera COUNCE early gastrula, Teleostei BRUMMETT — stages, Aves CALLEBAUT VAKAET J embryo transfer, Artiodactyla ROBISON , Invertebrata, Vertebrata AUSTIN Isopoda BARBAGALLO DE LUCA , molecular mechanisms, Rodentia MONESI , Orthoptera DE LUCA NIEUWKOOP VISCUSO ectoderm differentiation, influence of homogenates of differentiating tissues, Aves, Vrodela LOPASHOV NIKITINA — , primarily activated, transformation by RNA, Vrodela SASAKI effect of centrifugation. Amphibia KASYANOV environmental factors, Teleostei PETERS pressure, early development, Echinoidea MARSLAND electron microscopy, Rodentia STEGNER endoderm differentiation & mesoderm induction, relation to polarity, Vrodela BOTERENBROOD — formation, Aves LUTZ fused eggs, Tunicata FARINELLA Gastropoda MULHELKAR genetically tagged strains, Lagomorpha BEATTY germ band formation, Cheleutoptera LOUVET germ layers, differentiation. Mammalia OOSTROM VERWOERD grafting of reaggregated cells from blastoderm, Teleostei OPPENHEIMER induction & inhibition, regulatory mechanisms, Teleostei LAALE interactions in early development, Vrodela BOTERENBROOD NIEUWKOOP integrative mechanisms, early embryo, Aves SPRATT Lepidoptera KRAUSE levels of control, Echinoidea RIECK mesoderm, axial, Vrodela FINNEGAN — formation, Anura SUDARWATI Mollusca HESS oosome, early stages, Hymenoptera ACHTELIG organizer, cytological study, Aves SPRATT polyembryony, Aves KNJAZEVA Porifera LEVI primordia, implantation & explantation. Cephalopoda MARTHY prospective maps. Amphibia NAKAMURA , Arachnoidea HOLM Rodentia PIGHILLS WILSON role of egg cortex, UV micro-beam study. Gastropoda JURA segmentation, Insecta SANDER Teleostei WELANDER tissue primordia, cell interactions, Aves LAVARACK twiiming, Rodentia FERM ultraviolet microbeam studies, Hymenoptera AMY Vrodela BRUNST TESTA Vertebrata CSABA ToRo Xiphosura SEKIGUCHI EMBRYOLOGY (general & descriptive) see also specific stages; Development (general); Organogenesis A carina Actinozoa Anthozoa Anura appendices, Cheleutoptera Arachnida Artiodactyla Aves AESCHLIMANN GEIGY CASSAGNE JUDINA CONAN CUSIMANO DE BAVAY FOURNIER LEGENDRE WEYGOLDT BRYDEN KNESE SACK PORTMANN STEDING axial organs, cinematography, Aves MENKES SANDOR blastokinesis. Cephalopoda SACARRAO body form, Cetacea PILLERI Bryozoa SILeN Carnivora EVANS SACK Cestodes OGREN Chilopoda DOHLE Chiroptera UCHIDA Cladocera BETTANIN DELLA CROCE STOUT Coleoptera CHURCH RESSOUCHES Collembola TAMARELLE comparative study, different species & strains, Rodentia KAMEYAMA Crustacea ANDERSON IWATA Decapoda LUCAS developmental anatomy, Vrodela BALLARD — periods, relative duration, relation with yolk, Teleostei, Vrodela IGNATJEVA Dictyoptera BULLIERE Diplopoda DOHLE Diptera CRAIG early stages, Aves RADOS ROSTEDT ^ Coleoptera SCHNETTER , Collembola JURA , Gastropoda SATHANANTHAN , histochemistry, Rodentia SMITH , Homo O'RAHILLY , Invertebrata, Vertebrata AUSTIN , Pogonophora N0RREVANG , Primates BUTLER . Rodentia MARKERT WHITTEN , ultrastructure, Diptera MAHOWALD , — , Marsupialia TYNDALE Echinoidea ENDO electron microscopy, Annelida VILLA , Cestoda COLLIN , Diptera MAHOWALD , early stages, Vertebrata BALINSKY , encysted embryos, Anostraca HUMPHREYS , Gastropoda SATHANANTHAN , Homo BLECHSCHMIDT 254 , Nematoda COLLIN , Teleostei BRUMMETT . Turbellaria LE MOIGNE formation of germ band, Cheleutoptera LOUVET Gastropoda PORTMANN germ layers, phase specific gene activity, DNA, Teleostei, Urodela VAHS — . — , regional differences in cell com- position, Amphibia AVE Hemiptera MAZZA Homo GASSER MENKES REVESZ SINGER ZAMBONl Insecta GOUIN KRAUSE Isopoda STRoMBERG Lacertilia BONS Linguatulida N0RREVANG WINGSTRAND Mammalia PORTMANN Marsupialia STEPHENSON microcinematography, Aves SANDOR Myriapoda GOUIN Nemertini IWATA normal & abnormal, anatomy, Homo MIKAMO , Diptera YAJIMA — table, histological. Cephalopoda, Crustacea, Gastropoda FIORONI Notostraca STOUT Opisthobranchia IWATA Osiracoda WEYGOLDT paedogenesis in vivo & in vitro, Diptera WENT Pinnipedia BRYDEN Polychaeta CAZAUX Porifera LEVI Primates HENDRICKX primordia formed by teloblast derivatives, Cumacea DOHLE prothorax, Phasmidoptera SCROLL Pseudoscorpionidea WEYGOLDT pumping organ, Arachnida, Pseudo- scorpionidea WEYGOLDT Rodentia BR0NDSTED HUMMEL SINGER Rotatoria TEUCHERT serial sections available for inspection, Artiodactyla, Carnivora EVANS SACK slide collection, Mammalia EVANS SACK Teleostei BALON BENZIE CAMBAR SWANEPOEL test cells in oocyte & during development, Tunicata MANSUETO tropical forms, Echinoidea, Mollusca D'ASARO Turbellaria IWATA OHSAKI variability, Aves MANNER wild animals. Mammalia BIGGERS EMBRYOLOGY (physiological) see also specific stages; Biochemistry; Biophysics; Development; Energy; Metabolism; Nutrition; Respiration, etc. animalizing & vegetalizing substances, Echinoidea HORSTADIUS RUNNSTR6M animal-vegetal balance, nature of vegetalizing agents, Echinoidea RUNNSTR6M basic proteins, oogenesis & early development, Echinoidea BiiCKSTRoM catecholamines & their receptors, Aves, Rodentia MANUKHIN cell migration, Aves BELLAIRS HEAYSMAN Cheleutoptera EIDMANN chemical & biochemical changes NEWBURGH chemistry, Aves ROMANOFF conditions for development in deep lakes, Teleostei BRAUM cytochemistry, Teleostei YAMAMOTO development in waterfree medium, Teleostei DOMURAT developmental control factors in the cortex, Anura HEIM — rate, relation with maternal environment, Orthoptera VAN HORN Diptera COUNCE early embryo. Mammalia LUTWAK — gastrula, Teleostei BRUMMETT — stages, cytochemistry, Orthoptera UBBELS , effect of gamete age, drugs & hormones, Artiodactyla POLGE , extrachromosomal DNA, origin & function, Orthoptera CAVE , Gastropoda CLEMENT , immunology, Chondrostei APEKIN — • — , Invertebrata. Vertebrata AUSTIN , in vitro treatment & transplantation, Artiodactyla POLGE — — , Isopoda BARBAGALLO DE LUCA , Orthoptera DE LUCA VISCUSO , relations with uterus & corpus luteum, Artiodactyla MOOR effect of exogeneous DNA, Aves, Rodentia LEDOUX high temperature on embryogenesis, Artiodactyla, Lagomorpha, Rodentia ULBERG intracellular microorganisms, Dictyoptera BROOKS penicillin & streptomycin on early development, Aves WIERTZ — • — • pressure, early development, Echinoidea MARSLAND — — temperature, O2 & water flow, Teleostei BRAUM embryo survival after feeding certain compounds to mother, Hymenoptera GROSCH — ■ of viviparous forms in vitro, Teleostei DEPECHE endocrine conUol, Rodentia KRATOCHWIL energy transfer, early embryo, Aves REPORTER fluid & electrolyte balance, relation to teratogenesis, Aves, Mammalia GRABOWSKI growth rate, early stages, Aves BAKER histochemistry, Diptera STARRE incubation, Aves BAKER influence of environment on developmental rate, early embryo in vitro, Rodentia McLAREN kations. Gastropoda GEILENKIRCHEN interaction with virus, Aves TAHARA lobeless embryo, protein synthesis. Gastropoda TEITELMAN Mammalia GWATKIN metabolism, Echinoidea, Amphibia TENCER — , end-products, Anura ARIMA Na, K, Ca & Mg binding, relation to metabolic state, ovulation through cleavage, Anura MORRILL neurotransmitters, role in early embryo- genesis, Anura, Echinoidea BUZNIKOV MARKOVA nutrient requirements, Aves SPRATT O'l & CO2 requirements and tolerances, 'Aves TAYLOR preimplantation stages, metabolism, Rodentia TANNER rate of embryonic development, relation with cleavage rate, Teleostei JONES Rodentia MOSER WAELSCH role of egg white, Aves FRITZ salinity, action on embryo & larva. Amphibia DOBROWOLSKI stage-specific proteins, Diptera. Lepidoptera IMBERSKI tissue metabolism, effects of metabolic inhibitors, Aves McKENZIE Vertebrata CSABA T6R6 water uptake & distribution, Mammalia TUFT EMBRYOMA(S) see Teratoma(s) EMBRYONIC FLUIDS see Embryonic membranes EMBRYONIC MEMBRANES (& fluids) allantoic epithelium, effect of various agents, Aves PASSAPONTI allantois, morphology & histochemistry, Chelonia GERZELI 255 EMBRYONIC MEMBRANES (contd.) amnion, histochemistry & ultrastructure, Lagomorpha, Rodentia VARMA — , ultrastructure, Mammalia CHALLIER amniotic & allantoic fluids, relation with meso- & metanephros, Artiodactyla, Lagomorpha BERTON — fluid, cell types, source & relation to normal or abnormal development. Homo FITZGERALD , fetal contribution. Primates REYNOLDS — pressure, effect on skeletomuscular system, Aves SULLIVAN , pressure throughout pregnancy, Primates RAMSEY barrier to pathogenic bacteria, Rodentia FEDINEC chorio-allantoic tissues, developmental capacities, Avss LEVAK ^ SKREB SVAJGER chorio-allantois, cell structure, Artiodactyla, Lagomorpha BERTON chorio-amnion, transport of substances, Lagomorpha, Rodentia VARMA chorionic villi, connective tissue cells, histogenesis, Homo KOMINKOVA comparative histophysiology, protein transfer. Mammalia ANDERSON — morphology. Mammalia MOSSMAN degenerative changes at onset of labor, Homo MIKAMO fluids, physiology & physiopathology, Aves ABRAMOVICI — , relation to normal & mutant embryo, Rodentia JOHNSON formation in vitro, Rodentia WRBA Homo SCHRAMM protein transmission, Lagomorpha WILD Reptilia BELLAIRS Rodentia ORSINI role in feto-maternal relationships. Homo BAVEJA VARMA transamnion blockage, antibodies. Primates, Rodentia VOLKOVA ultrastructure. Homo KERSE yolk sac, blood cells, Rodentia JONES erythropoiesis, part, gene expression, Rodentia FANTONI etc., histochemistry, enzymology, Aves, Selachii, Teleostei FRASCHINI MANFREDI , histochemistiy & enzymology, Teleostei PORCELLI membrane, adaptive morphogenesis, Aves WILLIER , metabolism, hormonal control, Aves THOMMES , morphology & electron microscopy, Cephalopoda FIORONI placenta, lipid transport, Rodentia GAUTHIER PADYKULA TAYLOR , ultrastructure. Homo NAVARATNAM , — , Selachii FORD HALL ENDOCRINE ORGANS see also specific organs; Hormones Acarina AESCHLIMANN GEIGY adrenal dependent phenomena, effect of hypophysectomy, Aves THOMMES androgenic gland, role in non-functional male hermaphroditism, Crustacea FRIED , sex differentiation, Crustacea CHARNIAUX , — of neurosecretion, Crustacea PA YEN as affected by mutants, Diptera DOANE Cetacea HARRISON comparative histology, Amphibia IWASAWA correlation, Amphibia IWASAWA cytodifferentiation, histochemistry. Homo FALIN cytology, histochemistry, Teleostei OLIVEREAU development in embryonic systems PRICE electron microscopy, Aves DOSSEL , Cetacea, Pinnipedia YOUNG & correlations, Crustacea MEUSY embryonic, physiology, Aves STOLL experimental embryology, Rodentia DAIKOKU fetal & neonatal, Rodentia VAKAET function in embryo, Lacertilia, Ophidia RAYNAUD — , larval development & metamorphosis, Decapoda HUBSCHMAN functional differentiation, Lacertilia RAYNAUD gonads & adrenals, androgens & estrogens, effect of hypophysectomy, Aves WOODS , hydroxysteroid dehydrogenases, effect of hypophysectomy, Aves WOODS histogenesis. Amphibia HANKE LEIST — and interrelation, Chelonia DIMOND histophysiology, Teleostei OLIVEREAU hypophysis, adrenals & gonads, devel- opmental correlations, in vivo & in vitro, Aves MANELLI influence on reproduction, Aves KAMAR neiu-al gland, development & cyclic changes, Ascidiae GEORGES , role in gametogenesis, Ascidiae GEORGES Pinnipedia HARRISON Polychaeta HAUENSCHILD pre & postmetamorphic, Urodela PRAHLAD prothoracic gland, role in postembryonic development, Dictyoptera BODENSTEIN regeneration, morphogenesis, part, thyroid, Rodentia WROBLEWSKI relation with growth, Aves KAMAR role in growth, moulting & gametogenesis, Cladocera ZAFFAGNINI regeneration, Urodela MANNER Teleostei EGAMI ENDODERM see Embryology (experimental) ENERGY (developmental) chemical, central nervous system, Aves CORNER entropy in cell differentiation, Amira, Rodentia, Urodela KUCIAS metabolism, Amphibia, Teleostei DUSPIVA — , changes at fertilization, Echinoidea ASAMI — . neonatal & juvenile, Marsupialia ARNOLD SHIELD — , RNA synthesis, Teleostei, Urodela CRAWFORD pathways, differentiation, Vertebrata WILDE teratogenesis, Aves KAPLAN transfer, cellular interactions in monolayer cultures, Aves, Rodentia REPORTER — , early embryo, Aves REPORTER ENTEROCHROMAFFIN CELLS see Chromaffin cells ENZYME(S) acid hydrolases, acrosome, Echinoidea, Rodentia, Urodela BERTOLINI alcohol dehydrogenase, Diptera SOFER amylase, isozymes, genetic regulations, Diptera DOANE Anura SALLACH arginase, embryonic liver & kidney, Rodentia BRADLEY ATP-ase activity, Na K activated, retina, normal & hereditary retinitis pigmentosa, Rodentia BONTING DAEMEN , , — & ciUary body, Aves, Lagomorpha ROGERS — , kidney & lung, Rodentia WAYMOUTH — , localization in egg, Echinoidea KYONO tf-glucoronidase, lung & liver, Anura, Rodentia BOCZKOWSKA biochemistry, intestine, Rodentia MOOG blastocyst, implanting, Rodentia OWERS brain, optic system & thalamus, Rodentia SCHIEBLER carbohydrate & intermediate metabolism, fetal skin, Homo SERRI chemoreceptor cells, Carnivora, Homo, Rodentia ^^^^^ cholesterol esterase, brain, Rodentia PRITCHARD cholinesterase, cutaneous sensory corpuscles, Aves SAXOD — , dipeptidase & others, Pisces, Tunicata DURANTE chorionase, Teleostei YAMAGAMI collagenase, wound healing. Mammalia GRILLO connective & supporting tissue, Artiodactyla, Aves, Homo, Rodentia KNESE 256 d-aminolevulinate synthetase, induction, Aves SIMONS dehydrogenases in early embryo, Aves SPRATT — , lactic & hypoxanthine, Avts CROISILLE — , regulation & expression, Teleostei DUKH disaccharidases, intestine, Carnivora, Rodentia KRETCHMER DNAse, artificial yolk formation, Echinoidea BOLOGNARI — , effect of irradiation & alkylating agents, Aves TEMPEL — , function in embryo, Aves TEMPEL drug metabolizing, induction by drugs, Rodentia ARGYRIS effect on developing & regenerating tissues, correlation with effect of chemicals, Echinodermata. Turhellaria HEIN heterologous fibroblasts, Aves, Rodentia SANN egg, Diptera, Lepidoptera LAL PANT VARMA — & embryo, Cirripedia MINGANTI embryo, Aves, Mammalia MOOG — , Invertebrata MANCUSO REVERBERI — , Tunicata D'ANNA esterases, allelic forms in tissues, Rodentia POPP — , Aves CROISILLE — , multiple, compensatory effect, null genes, Rodentia POPP — , non-specific, larva & adult, Anura LOBO fat body, Lepidoptera LAL MORRIS PANT VARMA female genital tract, Mammalia THIERY fertilization & early stages, histochemistry, Rodentia DENKER — , Tunicata URSPRUNG fetus & neonate. Mammalia WALKER formation & activity in liver, Anura SHUKUYA formylase, time & tissue specificity, Diptera KIMMEL genetic control, Diptera WRIGHT glutamine synthetase in retina, relation to steroidogenic activity, Aves PIDDINGTON glycolytic, relation with respiration, early stages, Teleostei BOULEKBACHE glucose-6-phosphate dehydrogenase, spinal cord, effect of maternal hyperadrenocorticalism, Rodentia HOAR , — & sympathetic ganglia. Aves WENGER hatching, action mechanisms, Echinoidea ISHIDA — , crystallization, Teleostei ISHIDA — , synthesis, relation to cell differentiation, Teleostei ISHIDA hexokinase, activation, Urodela CRAWFORD hydrolytic, Anura, Rodentia FORTAK hypophysis. Homo, Rodentia HACH hydroxysteroid dehydrogenases, gonads & adrenals, effect of hypophysectomy, Aves WOODS induction, intestine, Rodentia VOLLRATH — & repression in cell cultures GUSTAFSON in vitro. Mammalia ELIASSON , particularly arginase, Aves ELIASSON — , role in development, Anura SPIEGEL — , ■ organ growth control, Rodentia ARGYRIS inhibitors, effect on brain. Mammalia SCHADe — , fed to mother, effect on egg production & embryo survival, Hymenoptera GROSCH — , Tunicata PATRICOLO isozymes, changes at metamorphosis, Anura KAJITA SHUKUYA — , Diptera, Vertebrata PANTELOURIS — , effect of teratogens, Aves JOHNSON — , patterns, Pisces, Rodentia MARKERT — , qualitative changes, Teleostei BOULEKBACHE — , spontaneous abortions. Homo PAWLOWITZKI kidney, experiments with actinomycin D, Rodentia SCHIEBLER Krebs cycle, Invertebrata BLACK LDH, embryonic erythropoiesis, Aves BLANCHET — , gene homology, relation to gene activation, Teleostei WHITT — , iso-, Anura SALTHE — , — , biochemistry, genetics & biophysics, Teleostei WHITT ■ — , — , egg through metamorphosis, Anura KUNZ — , — , embryonic & postembryonic, comparison of species & hybrids, Teleostei KUNZ Lepidoptera ETCHER limb regeneration, Anura NIAZI localization in embryo & subcellular fractions. Amphibia, Insecta DUSPIVA limb bud, Aves NAVAGIRI lysozyme, egg white, Aves NONAMI — , synthesis in vitro. Homo ADINOLFI lytic, spermatozoa, Anura RAISMAN malate dehydrogenase, Echinoidea OZAKI microspectropholometry, Selachii FORD mitochondria, Amphibia, Aves BOELL morphogenesis WEGMANN muscles, flight, Insecta BROSEMER NAD kinase, activation at fertilization, Invertebrata EPEL nervous tissue, myelinization WENDER neural retina, Aves PIDDINGTON pancreas endoderm, reassociated with lung mesenchyme, Aves DIETERLEN patterns, ontogeny. Amphibia, Insecta DUSPIVA phosphatase, acid, lung & Uver, Anura, Rodentia BOCZKOWSKA — , alkaline, Echinoidea MILLONIG — , — , egg & larva, Teleostei LOBO — , — , embryo, Urodela FINNEGAN O'DAY — , effect of alkylating agents & irradiation, Aves TEMPEL pineal gland, Aves THILLARD prenatal & postnatal development, Rodentia GREENGARD proteolytic, digestive tract, Amphibia, Aves FRATELLO queens & workers, Hymenoptera REMBOLD RNA polymerase, egg, Anostraca lYEIRI RNAse, inhibition by bentonite, Echinoidea COUSINEAU stage specific, immunology & biochemistiy- Artiodactyla KARLSSON steroid dehydrogenases, Aves SCHEIB succinoxidase & succinodehydrogenase, larva through adult, Diptera CHITNIS synthesis, control, Echinoidea EPEL — , effect of hormones, tissue differentiation & regression BOELL — , pancreas & salivary gland in vitio, Rodentia BERNFIELD — , regulation in vitro JOHANSSON systems, part, nitrogen metabolism, Anura JANSSENS testis. Mammalia BISHOP thiol-disulfide exchange catalysator, post- fertilization, Echinoidea KIMURA thymidine & uridine kinase, ribonucleotide reductase, correlation with mitotic index & cell cycle, early stages, Anura COWARD tissue specific, tryptophan metabolism, early stages, Anura KOSTELLOW transhydrogen catalyzation between cell cortex and mitotic apparatus, Echinoidea SAKAI tryptophan oxygenase, time & tissue specificity, Diptera KIMMEL tyrosinase, lens regeneration, Urodela ACHAZI — , multiple forms, genetic regulation, melanocytes, Rodentia QUEVEDO tyrosine degradation, development & meta- morphosis, Anura, Mammalia, Pisces GOSWAMI — oxidizing, factors determining regulation & development, liver, Vertebrata GOSWAMI variants in vitro, genetics & epigenetics, Rodentia RUDDLE wound healing, Rodentia MaKINEN RAEKALLIO yolk sac & other membranes, Aves, Selachii, Teleostei FRASCHINI MANFREDI , Selachii FRASCHINI , Teleostei PORCELLI EPIDERMIS cell renewal, effect of hormones & environ- mental factors, Lacertilia MADERSON cellular differentiation, biophysics. Mammalia SIMS embryonic, differentiation, Anura, Urodela BILLETT 257 EPIDERMIS (contd.) epithelium, differentiation, Annelida, Crustacea BAFFONI fetal, glycosaminoglycan changes, ^, ,^,^,i,.t-t-t Homo GIANNETTI hyperplasia. Mammalia, Urodela BUTLER Langerhans cell, origin, differentiation & immunochemistry, Rodentia REAMS larval, secretory activity, Urodela DODSON role in scale development, Teleostei KREJSA LUSE tail regeneration, Lacertilia MADERSON tonofilaments in development, wound heaUng & tissue culture, Teleostei BEREITER wound healing, electron niicroscopy, /Ifiura LUCKENBILL, LEESON BLOM EPIDIDYMIS ductus, epithelium & stereocilia, Rodentia pathology, Artiodactyla EPIPHYSIS see Pineal organ EPITHELIAL-MESENCHYMAL INTERACTIONS beak morphogenesis. Axes HAYASHI cornea, position of Golgi complex, Aves, Rodentia TRELSTAD embryonic development GARBER feather & limb formation. Ares WESSELLS histogenesis, Aves WESSELLS integument, cell death & differentiation, larva through metamorphosis, ultra- suuctuie, in vivo & in vitro, ^nura GOLDSMITH — morphogenesis, comparative study, Invertebrata, Vertebrata KREJSA Umb, Anura '^^^^"R^J Ayes KIENY SAUNDERS SEARLS ZWILLING — bud, position of Golgi complex, A\es, Rodentia TRELSTAD — regeneration, Urodela FABER — , scales & feather differentiation, ^ves GOETINCK — , xenoplastic chimaeras, Aves PAUTOU lung epitheLum, effect of heterologous mesenchyme, Aves DAMERON morphogenetic substances from mesenchyme in stomach & lung development, Aves MARIN role in biochemical differentiation, parotid gland, Rodentia GORDON skin derivatives & teeth, in vitro, Aves, Rodentia ^J?V^dS histochemistry, Aves, Mammalia RITSCHARD wing bud, Aves AMPRINO ^ ' CAMOSSO — & leg, xenoplastic chimaeras, Aves PAUTOU EPITHELIUM cells in vitro, locomotion & behaviour, Aves, Rodentia MIDDLETON columnar, role of microtubules in cell shape, Aves, Urodela BURNSIDE cysts HARTWIG differentiation, experimental analysis, ^vej STEDING regeneration, cytology, Rodentia DECK EQUIPMENT see Methods ERYTHROCYTES see Blood ERYTHROPOIESIS see Hematopoiesis EVOLUTION see Genetics EXCRETORY SYSTEM see also Kidney(s), Urogenital system histochemistry & fine structure, Vertebrata GIBLEY Malpighian tubules, development & meta- morphosis, Diptera CHITNIS metamorphosis, Anura CAMBAR GIRARD nephridia, Onychophora SILVA EXTRA-EMBRYONIC MEMBRANES see Embryonic membranes EXTREMITIES see Limb(s); Wing(s> EYE(S) abnormalities, studied by organ cuhuie, Rodentia KONYUKHOV allomctric growth, hemispherectomy, Rodentia AZOUBEL CRUZ lUCIF Arachnida HOMANN cavernicolous forms, Teleostei PETERS Cetacea PILLERI compound, descriptive & experimental embryology, Insecta SUCH cornea, epithelial-mesenchymal interactions, position of Golgi complex, Aves, Rodentia TRELSTAD — , morphogenesis, effect of lens, Aves ZINN — , orthogonal collagen lamellae, fibrous aixhitecture, Aves TRELSTAD depigmentation by thiocarbamide, Turbellaria KISHIDA diminutive, cornea, histochemistry, Aves MAROTTI effects of optic nerve section, Urodela GAZE electron microscopy, Urodela DICKSON embryonal tissue implants in anterior chamber, Lagomorpha AGARWAL ANGRA enzyme histochemistry, Rodentia SCHIEBLER falciform process, determination of site of formation, Teleostei LOPASHOV formation during regeneration, Turbellaria KISHIDA growth, allometric, Anura JONGH — , Anura HOLLYFIELD — & morphogenesis, Aves COULOMBRE immunochemistry, Amphibia CAMPBELL CLAYTON iris, depigmentation contiol, Urodela REESE — , regeneration, Lagomorpha. Primates AGARWAL ANGRA — , RNA synthesis activation, in vitro, Urodela REESE malformations, gene-conditioned, Rodentia GUMBRECK metaplasia, Teleostei LOPASHOV SOLOGUB morphogenesis, histochemistry, Aves MEYER mutants affecting development, genetics, Rodentia ^^,fidi^ , developmental study, Rodentia SAZHINA — — , Rodentia CAMPBELL CLAYTON nauplius, Crustacea ^^J,Si neural retina, enzymes, Aves PIDDINGTON , glutamine synthetase, relation to steroidogenic activity, Aves PIDDINGTON , protein & nucleic acid, Aves SCHWARTZ optic cup, role in development of optic tectum & nuclei, Aves WENGER pigment formation, genetics, ^^xtt»*t7 Lepidoptera EGELHAAP pigmentary system, biochemistry, genetic control, Lepidoptera MUTH pigmentation, genetic control & development, Lepidoptera GOTTLIEB protuberantia sclerae. Homo PILLEM reaction to vitamin B, Anura BER regeneration following irradiation, Rodentia RUGH relation with neurogenesis, Lepidoptera WOLSKY retina, ATP-ase activity, Na K activated, normal & hereditary retinitis pigmentosa, Rodentia ^JPI^JJ}^?, DAEMEN — , changes at metamorphosis, Anura HOLLYFIELD — & ciliary body, Na + K activated ATPase, Aves, Lagomorpha ^"^SctI — , hormonal control, Aves BtiZ 258 -, induction, Anura, Aves HOPERSKAYA LOPASHOV — & other structures, correlation with funcUon. Tetrapocia WEIDMAN — , postnatal, rhodopsin cycle, electro- reunogram, Carnirora BONTING — , receptor cells, ultrastructure ,S^°^I^^R —, regeneration, Anura, Teleostei LOMBARDO — ', sensory cells & synapses, in vitro, retinal fibres, Ares LEDERMAN ~^7;/°" '" """^ ""''' '*'"'""''" MARCHISIO "ilr"' '"""' '''"''"''' '"'"hoperskaya — pigment cells, differentiation in ^itro biochemistry, Aves CULtMAiN , developmental factors m yolk „^„„„--^ albumen. Axes . HARKlbUlN ~^es^°""^ * differentiation m v.tro^^^^^^^^ — receptors, time preceding differentiation, autoradiography, Aves piprro rudiment uansplantation between varieues with & without eyes, ^./e-r., ^^^^^smCK segregation into pigmented & sensory „^ retina, Urodela JACOBbUJN visual system, experimental study, Aves, Rodentia CUWAIn EYE LENS see also Regeneration (traumatic) ^,,g^ WOERDEMAN cataract, anterior polar, Carnivora SHUPE ceU division & fibre differentiation, ^„^__„„^(^^ Rodentia ARMSTRONG ceU repUcation & nuclear degeneration, , ^y^^ ^"^^ MODAK PERDUE PERSONS UPPULURI cellular differentiation in viuo, Aves KATOH , regulation of protein & nucleic acid synthesis in vivo & in vitio, ,^^.^,„-,„,, ArtioLctyla, Aves PAPACONSTANTINOU crystalUns, differentiation, Anura McUbViii development & growth, Aves MODAK UPPULURI "4*^.^^''°''"''°"' ''^°''''*"^'''^' McCALLION DNA synthesis, autoradiography, ANDERSON effect on corneal development, Aves ZINN electron microscopy, Aves ATj>jnTn , Mollusca ARNOLU eyecup-lens-system, phase specific gene activity, DNA, Teleostei, Urodela VAMS fibre cells, proteins controlling RNA ^, » ,ct, synthesis, Artiodactyla .^ * „,f yxtfi — differentiation in vitro, Aves KAWAKAMl — formation, molecular events i" iL'^o & in vitro^ Artiodactyla, Aves PAPACONSTANTINOU fibres, in vitro, Anura. Urodela YAMM^^ immunochemistry, Aves LaVt-LLf, — & regulatory mechanisms, Anura, ^^j^pg^^L '^"^^ CLAYTON TRUMAN induction, Aves n^^HOV by larval eye Ussues, Urodela LOPAStiwv — & differentiation, macromolecular ^waam synthesis, Aves, Rodentia c-ta^^ in vitro Aves blAKKt, — , uroaeia REYER THOMPSON inhibition in vitro by eye extracts, Avei macromolecules, synthesis, m vitro, ^^cutt-ia Aves YObHlUA Mammalia WOERDEMAN morphogenesis & protein synthesis, control in vitro, Aves ^^^^^A^ mutants affecting, Rodentia CLAYTON protein, electrophoresis, Rodentia KONYUKHOV —. immunochemistry, Ker/efcrflfa no a km a — . immunology & immunochemistry. Axes, Homo DOORENMAALEN — synthesis, Aves dcvcd regeneration, autoradiography, Urodela ^^J^^ — , causal analysis, Urodela »^t^a v RNA synthesis, Aves PERSONS role of RNA, Aves PIATIGORSKY terminal lens fiber cell differentiation, Avei BOLLUM ^ BORSTEL MODAK PERDUE FACE see Head FALLOPIAN TUBE see Oviduct FAT see Adipose tissues; Lipid(s) FAT BODY see Adipose tissues FATE MAPS see Embryology (experimental) FATTY ACIDS see Lipid(s) FEATHER(S) developmental physiology, Aves BRAHMA KOECKE KUHN differentiation, in vitro, Aves t^uJ^Pa^V^y — , xenoplastic chimaeras, Aves DHOUAIL-LY effect of hydrocortisone, Aves ^.cFu^n prostaglandins, Aves Kjsi^ticis. electron microscopy & biochemistry, kisCHER embryonic pterylosis, Aves KOECKE germs & tracts, effect of hydrocortisone, Aves ^^^'^ mesoderm-ectoderm mteraction, gOETINCK '^''^^ WESSELLS patterns, supernumerary pterylae, SENGEL pterylae & apteria, regional determination, ^^^^ pterylosis, Aves FRLANT role of placodes & featiier condensations, Aves NOVEL spinal^pterylae. effect of X-rays, SAUCER supe7numeray limbs, Aves DHOUAILLY trajt^-specificity. factors involved, s^u^^deRS FECUNDITY see Fertility FERTILITY {& sterility) effect of deoxyriboside base analogues, „„„„,^, drugs, Rodentia o™m nX stress and aging, Rodentia REYNOLDS superfecundity by hormone treatment, .dt;m Rodentia McLAREN FERTILIZATION amt^pr«!fn acrosome reaction, Rodentia ANDERSEN activation, changing metaboUc states, ^,_,„„„ , Anura ^VAT^ct — Coleovtera HAGET - EcMnMea RUNNSTRoM — ', fine structural changes, Echinoidea MILLONIG _' genetic control of oocyte reactivity, Lepidoptera "^MORRILL — , role of ions, Anura „tt^dSricq Amnhibia HUMPHRIES inurd KATAGIRI artificial activation, pronucleus formation, Rodentia ^^*-^^a??tiv _, Polychaeta Sr a'^pn Artiodactyla o,,nFrilFR chemical factor from oviduct, Anura BUDEGUEK & jelly coat, Anura BAKBIUki cortical granules, lysis, Invertebrata EPEL 259 FERTILIZATION (contd.) cytological & experimental study, Chondrostei, LameUibranchia, Teleostei GINSBURG cytology, Teleostei HUVER DNA synthesis, interordinal hybrids, Echinoidea ^^^O^^A-^S dry mass/water ratio, Echinoidea BEREITER Echinoidea ENDO effect of gamete age, drugs & hormones, ^^ „_ Artiodactyla POLGE egg membranes, changes, biochemistry, electron microscopy, Echinoidea INOUE electron microscopy, Annelida, Echinodermata, Mammalia FRANKLIN . Chondrostei, LameUibranchia, Teleostei GINSBURG & enzymology, Tunicata URSPRUNG , Homo, Primates ZAMBONI , Polychaeta ^^^^Vir energy metabolism changes, Echinoidea ^^^} enzyme activation, Invertebrata ,„vt/?A^^ experimental studies, Artiodactyla HANCOCK extracellular cement formation, Invertebrata EFEL fertilizin synthesis, oogenesis, or'„Rnpr.FW Polychaeta SCHROEDEK fertilizing capacity of sperm, role of hormonal state of female, Carnivora, „-->tva Lagomorpha, Rodentia SOJKA in viuo, cytology & endocrinology. Homo, Primates, Rodentia BAKEK & in vivo, Carnivora, Lagomorpha, Rodentia HUNT --Rodentia YANAGIMACHI Invertebrata. Vertebrata AUSTIN ionic permeability, tracer studies, ur»i>T Echinoidea, Teleostei HOKl jelly-coat specificity, immunology, bio- ^-p chemistry, Anura uaddcw Lagomorpha npm^TFR Mammalia BRINSTEK iviammana GWATKIN mechanisms, Nematoda MORETTI membrane, formation, role of cortical ^ /.-kit: granules, Echinodermata t^.J^c^ molecular mechanisms, Rodentia MONt,:>i nuclear changes, biochemistry, „.,,.^-. Echinoidea TERAYAMA physiology, Echinoidea ^smK^^A SUGIYAMA polyspermy-block, Echinodermata PRESLEY polyspermy, induced, Echinoidea MANELLI post-, activation of thiol-disulfide exchange catalysator, Echinoidea KIMURA Primates HENDRICKX quantitative aspects, Lagomorpha ADAMS ribosome activation, Echinoidea ,^>^r5iH Rodentia IWAMATSU MARKERT role of macromolecules, Anura NACE sperm reactivation after UV inactivation, Hymenoptera LoBBECKE various aspects, electron microscopy, Invertebrata COLWIN FETAL FLUIDS see Embryonic membranes FETAL MEMBRANES see Embryonic membranes FETUS see also Development (postembryonic, fetal) adaptation to intra-uterine environment, Artiodactyla REYNOLDS anaerobic metabolism. Homo DEROM blood, chemistfy after intra-uterine tcdv hypoxia. Homo THIERY growth, relation to placenta, Artio- dactyla STEGEMAN isolated, perfusion, Artiodactyla NIXON relation to placental size & uterine ^^dcw characteristics. Mammalia NAAKTGEBOREN size of umbilical cord at birth. Mammalia NAAKTGEBOREN sensory input & homeostasis, Artio- dactyla REYNOLDS steroid metabolism. Homo, Primates AXELROD steroids, Edentata ^SlnSv survival & growth, immunology, Rodentia KIRBY X-irradiation, effect on behaviour & encephalography, Mammalia RUGH FIBROBLAST(S) cartilage, bone, lung, kidney, histochemistry, enzymology, electron microscopy, Artiodactyla, Aves, Homo, Rodentia KNESE DNA content, relation to Oo-concentration, Aves MUSY effect of antibodies on cell behaviour, Aves PARTRIDGE — , — , Hempa, in viuo, Rodentia, Teleostei JACQUES heterologous RNA, nucleotides & enzymes, Aves, Rodentia EWART SANN identification in vitro, Aves, Homo, Mammalia NIIZIMA RNA & uridine incorporation, Aves SANN transformation by virus, Aves TEMIN FIN(S) paired, experimental embryology, Teleostei BOUVET — , Teleostei FRANCOIS tail, rays, regeneration, fine structure, Teleostei KEMP unpaired, Teleostei EMELIANOV FLAGELLA movement, Echinoidea KINOSHITA FLUORESCENCE MICROSCOPY see also Immunology autonomic ganglia, adrenergic inhibitory terminals, Rodentia CSILLIK KALMAN KNYIHAR SHAVER HOLSTEIN oviducal secretions, Anura spermatozoa, Lagomorpha FLUORINE NaF, effect on spicule formation, Echinoidea HEROLD FOLLICLE (egg-) see Ovary FOLLICLE CELLS see Oogenesis FREE-MARTINS see Sexual development GALL BLADDER (& bile ducts) GAMETES (& gametogenesis) see also Germ cells; Oogenesis; Spermato- genesis etc. biology & genetics, Diptera, Lagomorpha, Rodentia ^d^4dx chromosome behaviour, Anura MARKERT Conchostraca ^^^^^ovitj cytochemistry, Rodentia BRYAN effect of ionizing radiation, Chondrostei, Teleostei PERSOV electron microscopv, Annelida, Echinodermata, Mammalia FRANKLIN , fertilization, Polychaeta FALLON endocrinology, Cladocera ZAFFAGNINI gametogenesis, Bryozoa ^^^<^*Trv — , genetic control ^^^^^In Mollusca, Phoronida, Polychaeta TUCKER -, Rodentia TARKOWSKI Invertebrata, Vertebrata -^^^ttd in vitro, endocrine control, Crustacea BERRtUK maturation, Rodentia ,,^?^w^?Tt — , Teleostei IWAMATSU Mystacocarida ^/^^S^^wl^^ Primates ZUCKERMAN Rodentia ZUCKERMAN shedding, role of radial nerves, Asteroidea NOUMURA variations in cell structure & function, various techniques KESSEL GANGLION (GANGLIA) autonomic, adrenergic inhibitory terminals, ^''''^"'"' iSmaS KNYIHAR cephalic, experimental embryology, Vrodela MICHAEL 260 effect of NGF on microtubular protein synthesis & nerve fiber outgrowth, Axes YAM AD A enteric, Aves ANDREW nerve & glial cells, culture, growth & differentiation, Diciyopiera LEVI Remak's, Aves AGARWAL — , histochemistry, electron microscopy, Aves CANTING spinal, cells, Rodeiuia YAMADORI — , de- & regeneration following sciatic axotomy, Aves HOUTHOFF — , differentiation in vivo & in vitro, Aves KADASNE — , effect of increase of peripheral innervation, Aves MITOLO — , in vitro, behaviour & interaction of nerve fibres, Aves DUNN — , — , unipolar cells, Aves DUBEY — , neuroblast, histochemistry & ultra- structure, Aves PANNESE — , satellite cells, Aves PANNESE — & sympathetic, glucose-6-phosphate dehydrogenase, nucleotides, Aves WENGER structure, interconnections & connections with brain, Dictyoptera LEVI trigeminal, experimental study, Aves STRAY GASTRULA{TION) Anura KHAN cell contact & migration, Anura EISENBERG — surface in different regions, cell electrophoresis, (Anura) BRICK Coleoptera HAGET induction, Urodela DOUCET morphogenetic movements, biochemistry, Teleostei BRUMMETT , microcinematography, Anura, Urodela BOTERENBROOD HARA treatment with Li & thiocyanate, effect on vertebral column, Urodela MAUGER tryptophan metabolism, tissue specific enzymes, Anura KOSTELLOW ultrastructure, Anura BAKER GENE(S) see also Genetics; Mutants action during development, biochemistry, Echinoidea, Rodentia, Tunicata SMITH activation, bristle forming cells, Diptera RIBBERT — in regeneration, Turbellaria COWARD — of biochemical marker loci, Aves OHNO maternally derived alleles in hybrids, Aves, Teleostei OHNO — , salivary gland chromosomes, Diptera KATO activity, early stages, Anura CRIPPA — , effect of chemical stimuli, Lepidoptera BOSSHARD — in oogenesis, lampbrush stage, Anura DAVIDSON HOUGH — , phase specific, in germ layers & eye, DNA, Teleostei, Urodela VAHS — , polytene chromosomes, Diptera ROBERT — regulation by adult chromosomal RNA protein complex, Anura CLIVE affecting crossveinlessness, effect on heat shock phenocopying, Diptera MOHLER amplification, coding for RNA, oogenesis, Anura GALL causing genital, ophthalmic & urinary anomalies, Rodentia GUMBRECK control, differentiation, allophenic animals, Rodentia MINTZ crooked neck dwarf, morphology & bio- chemistry, Aves WENGER cytoplasmic, role in development, Rodentia POLLARD developmental, action in early stages, Anura MANNER expression correlated with karyotype arrangement, Diptera LAIRD — , early stages & cell differentiation, part, isozymes, Teleostei WHITT — , liver & oik sac hematopoiesis, Rodentia FANTONI — , morphogenetic agents, Echinoidea ELLIS — , regulation, Diptera, Lepidoptera IMBERSKI female-sterility, morphological & physio- logical effects, Diptera COUNCE function as related to differentiation, salivary gland, Diptera BERENDES — in giant chromosomes, Diptera PANITZ — , regulation at molecular level, Aves HUANG homologous, multiplicity, Pisces MARKERT homology, relation to gene activation, LDH, Teleostei WHIIT interaction in control of melanin formation, Aves PIERRO melanotic tumour, effect on development, Diptera SANG null, compensatory effect of multiple esterases, Rodentia POPP physiology, Diptera HESS pleiotropy, Diptera STERN TOKUNAGA regulation, multiple forms of tyrosinase, melanocytes, Rodentia QUEVEDO ribosomal, amplification, oocyte, uni- & multinucleolate forms, Asteroidea, Echinoidea, Teleostei VINCENT role in eye pigmentation, Lepidoptera MUTH specific, influence on effect of X-irradiation, gametes through pupae, Diptera WiiRGLER transcription, influence of cytoplasmic components. Amphibia, Gastropoda — , temporal & spatial aspects, Homo, Rodentia DOHERTY — & translation, control, Anura LANDESMAN GENETICS (developmental) see also specific aspects: Cell heredity; Chromosomes; Genes; Hybrids; Mutants; Nucleus etc. allophenic animals, gene control, Rodentia MINTZ Amphibia NACE Aves PIERRO blood groups, Rodentia FOSTER — proteins, Insecta EGELHAAF body shape & size, Aves, Crustacea COCK chromatophore development, Urodela DALTON contiol of chondrogenesis, Aves ELMER gametogenesis LINDSLEY haemoglobin switch at metamorphosis, Anura HAM AD A KAJITA SHUKUYA myogenesis, Diptera WRIGHT oocyte reactivity to activation stimuli, Lepidoptera ASTAUROV — , pigmentation, eye & testis, Lepidoptera GOTTLIEB — , sperm differentiation, Rodentia ROSENBERG differentiation processes, Diptera BAKER Diptera BENDER COUNCE MILKMAN POULSON DNA-iniection into embryo of different strain, Aves MARTINOVITCH early stages, Homo, Mammalia EDWARDS effect of nuclear labelling, (Amphibia) CHIBON egg structure, Diptera COUNCE enzyme activity, Diptera WRIGHT — variants in vitro, Rodentia RUDDLE eye colour, Polychaeta FISCHER — pigments, Lepidoptera EGELHAAF fat body development, Diptera BUTTERWORTH fluorouracil resistance & streptomycin sensitivity, Diptera DUKE gametes, Diptera, Lagomorpha, Rodentia BEATTY gene expression in cell cultures WHITTAKER genetic differences among spermatozoa, Lagomorpha KULANGARA — regulation, male germ cells, Diptera HESS genetical differentiation, mechanism, theoretical study NOTO genetically deficient embryos, neurogenesis, Diptera POULSON genotype, influence on developmental rate, early embryo in vitro, Rodentia McLAREN — of uniovular twins, Homo DEROM gynogenesis, chromosomal regulation by cold. Amphibia ROSTAND — , diploid, by fusion of egg nucleus & polar body, Anura RICHARDS — , — , by heat treatment & chemical treatment of sperm, Chondrostei VASSETZKY — , — , by inhibition of haploid egg cleavage, Anura RICHARDS — , Tunicata ORTOLANI 261 GENETICS (contd.) hair growth phases, mutants study, Rodentia CHASE haploid embryo cell lines, nuclear transfer, Anura FREED MEZGER heart malformation, experimentally induced, Rodentia WITHERS heredity, Turbellaria BENAZZI heteroploid embryos, Amphibia BEETSCHEN Heteroptera LAWRENCE heterosis, congenital anomalies, irradiation, Mammalia RUGH — & early development, Rodentia KRZANOWSKA Homo TESTA Hymenoptera WOYKE inherited abnormalities, Axes EDE iso-enzymes, Diptera, Vertebrata PANTELOURIS isogenic groups obtained by nuclear transplantation, morphology, biochemistry, Anura McKINNELL lactate dehydrogenase izozymes, Teleostei WHITT lethal genes, Aves TAYLOR linked genes, gene expression, Diptera LAIRD macromolecular synthesis, Echinoidea BAKER male germ cell, differentiation, Diptera KIEFER maternal effect, eye colour, mutants, Polychaeta FISCHER , hairless gene, Rodentia McLAREN melanophore populations, proliferation & differentiation, Vertebrata SCHAIBLE & morphogenesis, Lepidoptera, Diptera EGELHAAF mosaics, x-ray induced, bristle pattern, Diptera CLAXTON mutants, gynogenesis, Anura RICHARDS oogenesis, Diptera BROWN pattern formation, Diptera KROEGER STERN TOKUNAGA physiology, Diptera BENDER HUBBY pigment patterns, Vrodela DUNCAN — , Rodentia FOSTER Pisces MARKERT postembryonic development, Diptera, Lepidoptera LEGAY protein synthesis control, Vertebrata WHITT radiation, Diptera SHIOMI YOSHIKAWA recombination, effect on clonal development, Diptera GARCIA regulatory mechanisms in cellular dif- ferentiation, isoamylases, Diptera DOANE relation with cell differentiation ZITO Rodentia CSABA GREEN GRuNEBERG HUMMEL MOSER WAELSCH REVESZ STEVENS sex determination, Crustacea GINSBURGER — ratio disturbances, maternal inheritance, Diptera POULSON somatic mutations. X-ray induced, wing scales, Lepidoptera PENTZ tagged strains for developmental biology, Lagomorpha BEATTY Teleostei FOWLER transcription & regulation of genome in embryogenesis, biochemistry, Gastropoda COLLIER transplantation immunity, Aves RUTH Tunicata MILKAIAN Vrodela FERRIER X-irradiation tolerance, Rodentia RUGH GENITAL TRACT see also Reproductive system; Urogenital system asymmetry, organ culture, Aves LUTZ differentiation in vitro, Rodentia RAPOLA effect of steroid hormones in vivo & in vitro, Aves HAMILTON epithelial differentiation, regulative mechanisms FORSBERG female, cytochemistry. Mammalia BULMER — , enzymes, Mammalia THIERY glands, histochemistry, Gastropoda BOLOGNANI histochemistry, Carnivora BUCHANAN Lacertilia, Ophidia RAYNAUD male, effect of antiandrogens FORSBERG normal development, sex reversal, Aves WOLFF organ culture of primordia, Lacertilia, Ophidia RAYNAUD reaction to hormones in vitro. Mammalia GLENISTER seminal vesicles & prostate, effect of hormones, Rodentia SPAZIANI vaginal membrane, opening, effect of ovariectomy, Rodentia GITLIN vulva, growth. Homo LASSAU GENITALIA see Reproductive system GERM CELLS (general) see also Gametes Anura Aves Bidder's organ, Anura GIPOULOUX DUBOIS GHIRARDELLI RADO comparative history, Dermoptera, Primates DUKE cytochemistry, electron microscopy, auto- radiography, Rodentia WEAKLEY cytodifferentiation GONZALEZ descriptive & experimental study, Reptilia HUBERT differentiation, Ascidiae SABBADIN effect of radiation, Rodentia BEAUMONT X-rays, Primates, Rodentia BAKER electron microscopy. Homo WARTENBERG , Invertebrata, Vertebrata AFZELIUS , Reptilia HUBERT female, ultrastructure, Rodentia lOANNOU histochemistry, Homo FALIN male, differentiation, genetic control, Diptera KIEFER — , egg-like development, Vrodela TEMPLE — , electron microscopy & biochemistry, Diptera KIEFER normal & irradiated, fine structure, Primates, Rodentia FRANCHI nuclei, composition, biochemistry & changes after fertilization, Echinoidea TERAYAMA oogonia, fine structure & metabolism. Primates, Rodentia BAKER physiology & biochemistry. Mammalia NORMAN radiation genetics, Diptera SHiOMI YOSHIKAWA radiosensitivity, effect of metabolism & hormones, Rodentia BEAUMONT regeneration, Turbellaria DI MARCOTULLIO Turbellaria GHIRARDELLI uridine & thymidine incorporation, Aves CALLEBAUT X-ray destruction, Anura DI GRANDE GERM CELLS (primordial) Anura BUEHR Aves FARGEIX PAL A Aves, Rodentia OZDZENSKI Chaetognatha GHIRARDELLI germinal cytoplasm, effect of UV- irradiation, Anura CZOLOWSKA , histological & experimental study, Anura CZOLOWSKA metabolism, Anura CLARK male, genetic regulation, Diptera HESS polar granules, Diptera MAHOWALD pole cells, re-entry, effect of UV irradiation, Diptera YAJIMA radiosensitivity, Teleostei HYODO relations with somatic cells, Aves REYNAUD GERM LAYERS see Embryology see also specific derivatives GERMINAL VESICLE see Nucleus GESTATION see Pregnancy GILL(S) organ culture, Vrodela WILDE GLAND(S) (endocrine) see specific endocrme glands; Endocrine organs 262 GLAND(S) (exocrine) adhesive, determination, Anitra EAKIN cement, endoplasmic reticulum, Anura JACOB cutaneous, metamorphosis, histochemistry, Anura FRASCHINI development, synthesis & transport of secretions, Opiiidia KOCHVA digestive, Anura ALBERT ectodermal, Rodentia COHN gastric, Anura MANFREDI granular, skin, histochemistry, Urodela FRASCHINI mammary, differentiation in vitro, role of DNA svnthesis & cell division, Rodentia STOCKDALE — , effect of hormones & carcinogens, pre- & postnatal treatment, Rodentia HOSHINO — , , in vitro, Rodentia RIVERA — , organ culture, Lagomorpha, Rodentia GOMOT PROPPER — , regeneration after transplantation, Rodentia HOSHINO — , Rodentia KRATOCHWIL — , tissue culture. Homo, Rodentia KATO — , — interaction, DNA synthesis, in vitro, Rodentia ARMSTRONG — , transplantation, Lagomorpha, Rodentia GOMOT PROPPER parotid, biochemistry & ultrastructure, Rodentia REDMAN — , effect of dietary change on developmental pace, Rodentia REDMAN — , epithelial-mesenchymal interaction, biochemical differentiation, effect of exogenous agents on secretion, synthesis & expulsion of proteins, Rodentia GORDON — , functional differentiation, subcellular aspects, Rodentia BLUEMINK — , Homo GASSER — , morphogenesis & functional development in vivo & in vitro, Rodentia LAWSON salivary, chromosomes, puffing & dif- ferentiation, Diptera BEERMANN — , differentiation, larval, Diptera DANIELI — , DNA synthesis & differentiation in vitro, Rodentia BERNFIELD — , gene function & differentiation, Diptera BERENDES — , inductive interactions in vitro, synthesis of macromolecules, Rodentia BERNFIELD — , lipids, role in secretion, Rodentia PRITCHARD — , morphogenesis in vitro, extracellular materials, Rodentia BERNFIELD — , nucleolus, ultrastructure & cyto- chemistry, Diptera JACOB silk, control of DNA synthesis, Lepidoptera DE TURENNE — , physiology, Lepidoptera DAILLIE sinus, regeneration, Crustacea VERNET skin, thyroxin control, Anura VANABLE sub-maxillary, primordium, organ culture, Rodentia RAYNAUD supraorbital, Aves HERBERT uropygial, Aves BRIDE GOMOT GLUCOSE see Carbohydrate(s) GLYCOGEN see Carbohydrate(s) GONAD(S) see also Ovary; Testis Amphibia AOTO Ascidiae GEORGES Aves CHAYTOR Cetacea HARRISON correlation with hypophysis & adrenals, in vivo & in vitro, Aves MANELLI WOODS development, Carnivora, Lagomorpha, Rodentia HUNT differentiation. Gastropoda GOMOT GUYARD — of somatic & germinal tissues, Rodentia OZDZENSKI electron microscop. Homo WARTENBERG experimental embryology, Anura VANNINI hermaphroditism, Teleostei LISSIA histochemistry, Aves LIWSKA MEYER — , Homo SINGH — , Vertebrata BIELANSKA Homo ASAYAMA hormones, histochemistry, Aves WOODS — , role in sex differentiation, Aves, Rodentia NOUMURA hybrids, functional development, Urodela MANCINO immunology, Lagomorpha, Rodentia ELGER interaction with hypophysis & pineal gland, in viUo, Rodentia LOMBARD interstitial cells, ultrastructure, Aves SCHEIB in vitro, differentiation & intersexuality, Aves STENGER WOLFF irradiation, Coleoptera BLUZAT larval & adult, in vitro, Anura GARDENGHI ZACCANTI — , Crustacea PA YEN — & imaginal, effect of hormones, part. juvenile hormone, Heteroptera MASNER — , organ culture, Coleoptera LENDER Leydig cell, autoradiography, Homo DADOUNE normal development, sex reversal, Aves WOLFF of two classes, association in vitro, Aves, Mammalia SALZGEBER organ culture, action of chemicals SALZGEBER , Anura FOOTE , endocrine activity, Vertebrata ZAAIJER Pinnipedia HARRISON relation with reproduction, Aves KAMAR sex differentiation, experimental analysis, Aves AMANUMA ASAYAMA somatic elements. Mammalia, Pisces OHNO sterile, Anura DI GRANDE steroid dehydrogenases, Aves SCHEIB — & sterol synthesis, in vitro, effect of HCG, Aves CEDARD GUICHARD synthesis of steroid hormones, Aves CEDARD STENGER Teleostei ARRU GRADIENT(S) see also Symmetry animal & vegetative, biochemistry, Echinoidea KINOSHITA animalization, vegetalization, chemical agents, Arachnoidea EHN — , — , Echinoidea ELLIS animalizing & vegetalizing agents, Echinoidea LALLIER dorso-ventral polarity, relation with mesoderm induction in blastula, Urodela BOTERENBROOD NIEUWKOOP egg, Echinoidea H6RSTADIUS physiological, polarity control, Turbellaria COWARD polarity, Polychaeta LESH polarization, effect of artificial weight- lessness, Anura, Nematoda BRIEGLEB TEUCHERT GRAFT REACTIONS see Immunology; Transplantation GRAFTING see Transplantation GRANULOSA CELLS see Ovary GROWTH see also Growth factors allometric, eye, Anura JONGH — , — , hemispherectomy, Rodentia AZOUBEL CRUZ lUCIF — , Rodentia SCHUMACHER — , skeleton, Chiroptera KLIMA — , skull & dental arch, Rodentia lUCIF — , thyroidectomy, Rodentia CRUZ lUCIF biochemical effects of growth-limiting culture medium, Aves KLEIN biometry, early stages, Aves ELI AS cellular, control. Mammalia MUELLER compensatory, adrenal cortex, Rodentia BELKA — hypertrophy, kidney, Rodentia GOSS — , kidney, Artiodactyla, Lagomorpha BERTON 263 GROWTH (contd.) — , regulation, Rodentia HOFMAN MULLER — systems, aging, Diptera SONDHI control, functional hypertrophy, kidney, Mammalia ARGYRIS — , liver, role of plasma proteins. Mammalia ARGYRIS effect of artificial sweetners. Axes VENEZIANO • hypoxia. Mammalia CLEGG _- _- steroids, Veriebrata WURMBACH temperature, Hydroidea PARK teratogens, Veriebrata WURMBACH thyroid hormone, Veriebrata WURMBACH X-rays, Urodela VERWOERD embryo, Cladocera BETTANIN DELLA GROCE — , hormonal & dietary control. Axes BETZ embryonic, cell number, mass, density, water uptake, Anura TUFT enhancement by aureomycin, Aves HSU expianted embryo, protein metabolism, Ares KLEIN fetal, relation to placenta, Artio- dactyla STEGEMAN hormones, Hemiptera WIGGLESWORTH Hydroidea LYTLE Hydrozoa HAYNES influence of endocrine glands, Axes KAMAR larval, effects of starvation & temperature, Urodela HEATH — , endocrine control, Decapoda HUBSCHMAN — , food changes, Cyclosiomata BAXTER liver, induction by drugs, Rodentia ARGYRIS initotic, regulation, Insecta POHLEY morphogenetic forces, Anura, Aves WURMBACH nucleic acid-protein ratios, Rodentia BRYAN of embryo, Teleostei FRANCOIS organs, allometric, Rodentia CRUZ — , effect of isogenic subcellular tissue fractions, Rodentia STERN patterns, accessory reproductive organs. Mammalia CLEGG physiology & biochemistry, Diptera, Lepidoptera SHAPPIRIO — , Diptera ROCKSTEIN postembryonic, Carnivora HUBER rate, early embryonic stages, Aves BAKER regulating substances, effect on muscle, Aves HIKAMI regulation, Teleostei GOSS Rodentia GOEDBLOED skeleton, variations, Lagomorpha SAWIN skull, Artiodactyla, Carnivora HUBER spleen, transfilter stimulation by adult spleen, Aves MUN stimulation by ascites tumour. Mammalia ARGYRIS Teleostei HUVER thyroidless adults, Anura YU visual system, Anura HOLLYFIELD GROWTH FACTORS chemistry & action, Aves KONYSHEV nervous system LEVI NGF & anti-NGF, effect on neural crest & skin differentiation, Aves, Rodentia KOLLAR — , effect on microtubular protein synthesis & nerve fiber outgrowth, Aves YAMADA protein, tissue culture, Artiodactyla HARRIS Teleostei LAALE GUANOPHORES see Chromatophore(s) GYNOGENESIS see Genetics HAIR(S) Chiroptera KLIMA effect of prostaglandins. Rodentia KISCHER electron microscopy & biochemistry, Rodentia KISCHER follicle & associated glands, Artiodactyla LYNE — , cellular differentiation, biophysics. Mammalia SIMS growth, in wound healing, Mammalia ARGYRIS — phases, mutants study, Rodentia CHASE Marsupialia LYNE vibrissae, differentiation, in vitro. Rodentia KOLLAR HAPLOIDY embryo, water relations TUFT haploid & diploid tissues, electron micro- scopy, Anura FOX HAMILTON — embryo cell lines, genetics, nuclear transfer, Anura FREED MEZGER — syndrome, Anura HAMILTON racial hybrids, Anura MOORE radiosensitivity, Anura HAMILTON HATCHING enzymes. Amphibia SALTHE — , Anura KATAGIRI — , blastula, action mechanism, Echinoidea ISHIDA — , crystallization, Teleostei ISHIDA — , synthesis, relation to cell differentiation, Teleostei ISHIDA HEAD bilateral symmetry, determination. Gastropoda VERDONK cell-lineage, Gastropoda VERDONK cephalogenesis, larval & imaginal, experimental study, Diptera SCHOELLER experimental embryology, Coleoptera, Orthoptera HAGET — — , Orthoptera ROGUEDA face & cranial base, fetus, anthropology & anatomy. Homo KVINNSLAND — , experimental study, Rodentia LARSSON — • & palate, Rodentia ASLING functional morphology, larval stages & metamorphosis, Anura JONGH malformations, experimental, Rodentia KNUDSEN oro-facial malformations caused by pyrimethamine. Mammalia COLEMAN Phasmidoptera SCHOLL role of prechordal plate, Aves, Homo, Mammalia KRAUS transplanted in tandem, relation etc., Urodela BRaNDLE HEART (& great vessels) aortic arches, circulation, Aves PEXIEDER , normal & experimental morphology, Aves PEXIEDER cell death, Aves PEXIEDER coronary arteries, Aves, Rodentia DBALY determination & differentiation, temporal & spatial, Urodela DUNCAN development, induction, in vitro, Urodela FULLILOVE differentiation, isolation & role of intra- cellular materials, Urodela DUNCAN ductus arteriosus, closure & patency, experimental study, Artiodactyla, Lagomorpha, Rodentia HoRNBLAD effect of aminoguanidine, Aves WATTERSON electrocardiography, normal & abnormal, Aves PAVKOV electron microscopy, Lagomorpha, Rodentia CHALLICE electrophysiology, Aves LE DOUARJN — , electron microscopy, Rodentia GROS — , Rodentia, Urodela BERNARD GARGOUIL experimental embryology, Urodela AMANO — morphology, Aves, Lagomorpha, Rodentia CONTE — ■ teratogenesis, Aves BIESENBEEK DRUKKER LAANE LOS functional development, micro-electrography, Aves TAMANOI general study, Aves BIESENBEEK DRUKKER LAANE LOS histology & electron microscopy, Rodentia GARGOUIL Homo CONTE induction, endodermal factor, Urodela JACOBSON innervation, cholinesterase & mono-amine. Homo, Mammalia NAVARATNAM ionic contents, Rodentia RAYMOND maintenance of differentiation in vitro, Aves TAYLOR malformation, experimentally induced, genetics & development, Rodentia WITHERS 264 malformations. Homo ROBERTSON — , pathology, Artiodactyla NIE — , Rodentia ROUX — , teratogenesis, part, trypan blue, Aves STePHAN morphometry, Aves, Rodentia DBALY muscle cells, conducting system & innervation, electron microscopy, Aves NAKAMURA , dissociated MUIR myocardial cells, differentiation, experimental study, Aves LE DOUARIN , interactions in vitro, Aves GORDON myocardium, Aves GORDON — , regeneration, biochemistry, Lagomorpha SADOKOVA — , — , Mammalia AKHABADZE MALIOVANOVA POLEZHAEV normal & abnormal development, Aves, Homo, Mammalia KREDIET , Homo LOS organ culture, Amira BRIDE GOMOT origin of asymmetry, blastoderm in vitro, Aves LEPORI pacemaker, initiation of heartbeat, Aves DeHAAN physiology & development, action of X-rays, Aves LE DOUARIN — , part, action of vasoactive substances & respiratory gases, Aves GIRARD primordium, biochemistry, Aves EBERT — , effect of stimulants & depressants, in vitro, Aves BUTROS — , morphogenetic movements & cell migration, Aves DeHAAN pyrimidine synthesis, Rodentia KRETCHMER role of endoderm, Aves FAINSTAIN teratogenesis, Aves PAVKOV — , chemical, Rodentia ADAMS — , Rodentia MONIE ultrastructure, Rodentia, Urodela PAGER weight, Cetacea, Mammalia SPENCER HEMATOPOIESIS blastodisc, erythropoietic tissue in vitro, Aves WAIN WRIGHT blood-forming tissues, effect of irradiation, Marsupialia BLOCK comparative. Homo, Mammalia MAZHUGA embryonic, Anura MANGIA — , Aves SALVATORELLI — , erythropoietin, influence on protein synthesis, Rodentia MALPOIX — , lactic dehydrogenases, Aves BLANCHET erythrocytes, biochemistry of induced differentiation GOLDWASSER — , morphology & chemistry, Urodela GRASSO erythroid cells, yolk sac derived, differentiation, molecular biology, Rodentia FANTONI — tissue SCHULMAN erythropoiesis, effect of cobalt salts, Rodentia BIAGIONI — , histones, Aves, Lagomorpha MacRAE — , role of kidney & spleen, Rodentia GIOVANNINI erythropoietin, Rodentia LIOTTI factors involved, Anura, Aves RAUNICH liver, electron microscopy. Homo, Rodentia JONES — , Rodentia JACQUOT NAGEL — & yolk sac, part, genetic expression, Rodentia FANTONI metamorphosis, Anura SALVATORELLI morphology & histochemistry, Aves, Homo, Mammalia ACKERMAN radiation effects, immunochemistry, Rodentia TAMANOI reticulocytes, protein synthesis, Lago- morpha COHEN Urodela DEPARIS HEMOGLOBIN see Blood HEMOLYMPH antigens, Hymenoptera, Lepidoptera hemocytes, maturation & biosynthetic capacities, Crustacea lipovitellins, Crustacea proteins, genetics & physiology, Insecta EGELHAAF — , Insecta — , metamorphosis. Hymenoptera KOCH LENSKY LENSKY KERR KERR HENSEN'S NODE see Primitive streak HEREDITY see Genetics HERMAPHRODITISM see Sexual development HETEROPLOIDY Anura NADAMITSU experimental, cytology, embryology & genetics. Amphibia BEETSCHEN lethal aneuploid embryos, Rodentia BATEMAN HETEROSIS see Genetics HISTOCHEMISTRY (& cytochemistry) see also specific substances; Autoradiography; Electron microscopy adrenal cortex, culture, Rodentia ROOS — medulla, cells containing epinephrine & norepinephrine, Rodentia VERHOFSTAD , Rodentia WOOD , comparative study, Anura, Homo, Rodentia KMIEC aUantois & urinary bladder, Chelonia GERZELI amnion, Lagomorpha, Rodentia VARMA blastocyst, implantation, Lagomorpha STEER bone Aves, Mammalia GAILLARD — , regeneration, Rodentia MaKINEN RAEKALLIO brain, mapping KOZIK cell heterogeneity, origin & significance, Anura, Urodela UBBELS cells undergoing morphogenetic movement, Anura BAKER cerebellar cortex, Rodentia CSILLIK KASA cerebellum, Carnivora McCANCE PHILLIS — , Vertebrata RuDEBERG chemoreceptor, Lagomorpha DRUKKER chromatin, Diptera MAHOWALD chromosome puffs, Diptera RASCH cleavage, Rodentia REMENAR Coleoptera WEGLARSKA comb, Aves LAWRENCE connective & supporting tissue, Artiodactyla, Aves, Homo, Rodentia KNESE cutaneous glands, metamorphosis, Anura FRASCHINI cytochemistry, regeneration blastema, Turbellaria BETCHAKU decidua parietaUs & capsularis. Homo VARMA de- & redifferentiation, denervated limb, Urodela HEARSON differentiation, nervous tissue, Rodentia LaVELLE early stages. Gastropoda CLEMENT SATHANANTHAN , Orthoptera UBBELS , Rodentia SMITH effect of hormones & antimetabolites on regeneration & differentiation, Aves, Rodentia ACHTELIK on gonads, Heteroptera MASNER egg cortex, Mollusca ARNOLD — , Homo, Rodentia MARTINEK — implantation. Mammalia JIRSOVA — shell formation, Plathelminthes GERZELI — transport. Mammalia JIRSOVA embryo, Diptera STARRE enamel epithelium, lysosomes, Rodentia BODMAN endocrine glands. Homo FALIN , Lacertilia RAYNAUD , Teleostei OLIVEREAU endo- & ectomesenchyme, Urodela FINNEGAN endometrium & embryonic membranes, Homo BAVEJA enzymes, lung & Uver, Anura, Rodentia BOCZKOWSKA epithelioneural bodies, Aves DREYER esterases, non-specific, larva & adult, Anura LOBO excretory system, Vertebrata GIBLEY eye, Aves MEYER — lens inductors, Aves STARRE fat body, Coleoptera LABOUR female genital tract. Mammalia BULMER 265 HISTOCHEMISTRY (contd.) fertilization & early stages, Rodentia DENKER fetal skin, Homo CERIMELE functional development, kidneys, liver, pancreas, Axes DOSSEL Gastropoda SEMBRAT genital tract, glands, Gastropoda BOLOGNANI germ cells, Homo FALIN , Rodentia WEAKLEY glia cells ^^c^^ gonads, Aves ^Y^X^ MEYER _. Homo SINGH — , Vertebrata BIELANSKA granular skin gland, Urodela FRASCHINI heart, part, teratogenesis, Aves BIESENBEEK DRUKKER LAANE LOS Hofbauer cells of placenta, Carnivora, Homo, Rodentia KOMINKOVA imaginal discs differentiation, Diptera SPREY immunoglobulin, plasma cell, Rodentia ANDERSON inorganic salts in lung & liver, compared to level in blood plasma, Anura, Rodentia WYSOCKA integument of foot & mantle, Mollusca BOLOGNANI intestinal intramural nerve plexus, Rodentia GABELLA intestine, Rodentia VOLLRATH Umb bud, Aves NAVAGIRI , Lacertilia RAYNAUD liver, neonatal, Rodentia MALET POURHADI TURCHINI lymphoid organs, in vivo & in vitro COMOGLIO lysosomes & hormones, cell death, meta- morphosis, Anura, Hemiptera GOLDSMITH mast cells, Rodentia SEFTALIOGLU mesonephros, Aves AMADO — , regression, Aves RUSSO metamorphosis, Diptera RUSSO metanephros, Artiodactyla BYLINA mitotic spindle, Diptera MATUSZEWSKI morphogenesis, in early embryo, Rodentia NEWMAN — , Vertebrata GOFF mucopolysaccharides, egg & larva, Teleostei LOBO — in skeleton, normal & abnormal, Rodentia KLEINEBRECHT muscle, Anura, Rodentia MESSAGE — fibres, skeletal, postnatal, Rodentia GAUTHIER PADYKULA TAYLOR neoplastic conversion of embryonic cells in vitro, Rodentia MITCHELL neural & mesodermal competence, Urodela UBBELS neurohormones in regeneration, Hydroidea, Turbellaria LENICQUE neuromuscular junctions, Rodentia GAUTHIER PADYKULA TAYLOR neurons, Vertebrata AZOUBEL CRUZ neurosecretory cells, Orthoptera EWEN nucleolus, Echinodermata CANNATA — , oogenesis, Polychaeta STAGNI nurse eggs, Gastropoda HADFIELD oocyte envelope, Teleostei MALONE oogenesis, Cladocera ZAFFAGNINI — , Coleoptera, Diptera, Mollusca RUSSO — , cytochemistry, Coleoptera URBANI — , Echinoidea KOBAYASHI — , meiosis ROTH — , Orthoptera UBBELS — , Sipunculida N0RREVANG — , spermatogenesis, Hydroidea STAGNI — , Turbellaria GREMIGNI — , vitellogenesis, Teleostei MALONE oviduct & placenta. Homo THIERY palate, normal & cleft, in vitro. Homo, Rodentia POURTOIS phosphatase, alkaline, egg & larva, Teleostei LOBO — , — , Urodela FINNEGAN ODAY phospholipids, larva & adult, Anura LOBO photoreceptors, Mollusca KOSHIDA placenta, combined with electron micro- scopy, Rodentia WEISHEIT — , effect of teratogens, Rodentia KERNIS — , Homo RIMNICEANU — , Homo, Mammalia VACEK — , pathology. Homo IVEMARK — , Rodentia BULMER TIBBITTS prechordal plate, Aves, Homo, Mammalia KRAUS primary induction, Urodela HAYASHI primitive streak, Aves, Mammalia VACEK proteins, basic, oogenesis & early development, Echinoidea BaCKSTRoM quantitative, nucleic acids & proteins, induction & differentiation, Vertebrata VAHS regenerating motor nerves, Teleostei MARK reinnervating muscle, Teleostei MARK Remak's nerve J^^fLv renal carcinoma, differentiating, Rodentia GIBLEY reproductive structures, Diptera LEOPOLD Selachii FORD shell secretion. Gastropoda TIMMERMANS skin, epithelial-mesenchymal interactions, Aves, Mammalia RITSCHARD spermatogenesis, Teleostei HUVER spermatozoa, apyrene, Lepidoptera FRIEDLANDER spinal cord, Anura NIAZI starving animals, Turbellaria PEDERSEN stylet & styligenic organ, Heteroptera PINET subcommissural organ. Homo, Mammalia LEONIENI succinoxidase & succinodehydrogenase, larva through adult, Diptera CHITNIS tail primordium, Anura VACEK taste buds, Homo SEVCENKO teeth, effect of hypervitaminosis A, Rodentia DWORNIK thymus, in vivo & vitro COMOGLIO tissue differentiation, Vertebrata BRAHMA — primordia, cell interactions, Aves LAVARACK tooth germ, Urodela ROUX veeetative ground plexus, Rodentia CSILLIK KNYIHAR wounds, cutaneous, Rodentia SCHMIDT yolk formation, Aves BELLAIRS ENGLAND — , oocytes, Teleostei DONATO — origin, Gastropoda HADFIELD — sac & other membranes, Aves, Selachii, Teleostei FRASCHINI MANFREDI placenta, lipid transport, Rodentia GAUTHIER PADYKULA TAYLOR , Rodentia WEISHEIT , Selachii FRASCHIN , Teleostei PORCELLI HISTONE(S) cliromosomal, synthesis regulation, Echinoidea xJ:„ — , sperm, Lamellihranchia, Orthoptera BLOCH HISTORY OF EMBRYOLOGY Invertebrata HELFENBEIN HOMEOSIS see Mutants see also Regeneration (traumatic) HOMOGENATES see Tissue(s) 266 HOMOLOGOUS INHIBITION see Tissue(s) HORMONE(S) see also specific hormones; Steroids ACTH, Amphibia LEIST , effect on adrenal glands, Rodentia DOMAC action mechanism on genital system, Ares, Rodentia NOUMURA androgenic, chemistry. Crustacea CHARNIAUX control of imaginal maturation, Diptera, Hymenoptera GRAY metamorphosis, cellular aspects, Diptera, Lepidoptera OBERLANDER placenta, in vitro. Homo BAKER regeneration, Polychaeta HOFMANN sexual differentiation, Chilopoda ZERBIB ecdysone, effect on nucleic acid & protein synthesis, Dictyoptera, Diptera SHAAYA — , role in protein & RNA synthesis, Diptera SEKERIS effect on ATP-ase system, brain, Aves STASTNY bone, Amtra, Aves McWHINNIE , Aves, Mammalia GAILLARD cell renewal in skin, Lacertilia MADERSON central nervous development, Rodentia EAYRS comb, Aves LAWRENCE development, Rodentia KRATOCHWIL differentiation, electron microscopy, autoradiography, in vitro, Lepidoptera BERRY disruption of morphogenesis, Diptera ADAMS duodenal mucosa & retina differentiation, Aves BETZ embryonic growth, Aves BETZ enz>me synthesis, tissue differentiation & regression BOELL fertilization & early development, Artiodactyla POLGE fertilizin synthesis, oogenesis, Polychaeta SCHROEDER on fetal development, Rodentia TUCHMANN gonads, larva & imago, Heter- optera MASNER hypermetamorphosis, Coleoptera CHURCH mammary glands, Rodentia HOSHINO , in vitro, Rodentia RIVERA melanophore behaviour, Anura BYTINSKI , Rodentia SPAZIANI metamorphosis, Insecta SCHMIALEK — — mitosis & DNA synthesis, Rodentia LAGUCHEV oogenesis, ovarium & Bidder's organ, Anura GARDENGHI ZACCANTI organ cultures, Anura TATA . ovary maturation, Diptera ADAMS oviduct, Aves SCHIMKE placental growth, biochemistry, Rodentia ASAMI — — postembryonic development, Diptera BERENDES protein synthesis, ribosomes, RNA, Lepidoptera WYATT & transport, oogenesis, Orthoptera WYATT radiosensitivitv of germ cells, Rodentia BEAUMONT regeneration & differentiation, histochemistry, Aves, Rodentia ACHTELIK RNA metabolism in metamorphosis & pupal diapause, Lepidoptera BARTH sex determination, Aves VAN DETH skin, Anura, Rodentia HANKE equilibrium, effect on metabolism, Insecta PFLUGFELDER fertility regulating agents, effect on ^ •»*/-> anatomy & chromosomes. Homo MIKAMO FSH, morphogenetic effects, Aves LAKSHMI SHERBET gonadotropin, chorionic, effect on MuUerian ducts, Aves PREDA — , effect on maturation. Amphibia, Chondrostei AISENSTADT DAVIDOVA DETTLAFF SKOBLINA — , oogenesis, Teleostei SAKUN — , sexual development, Lacertilia, Ophidia RAYNAUD — , steroid synthesis & glycogenolysis, perfused placenta, Homo CEDARD — , Mammalia SCHUETZ — , pituitary, role in follicle development, ovulation & implantation, Artiodactyla, Rodentia ROBERTSON growth, Hemiptera WIGGLESWORTH — , effect on postembryonal growth, Aves H6CKER HCG, effect on steroid & sterol synthesis, immature gonad in vitro, Aves CEDARD GUICHARD in morphogenesis KUHN interactions, oocyte, Anura HORTON juvenile, analogues, effect on gonads, larva & imago, Heteroptera MASNER — , effect on nucleic acid & protein synthesis, Dictyoptera, Diptera SHAAYA — , effect on protocatechuic acid glucoside synthesis in accessory sex gland, Dictyoptera SHAAYA — , mode of action, Dictyoptera, Diptera SEKERIS LH, role in ovulation, Carnivora HAMNER liver, protein synthesis, Rodentia MALPOIX LTH, effect on growth & nitrogen excretion of tadpoles, Anura ARIMA — , postembryonal growth, Aves H6CKER — , spermatogenesis, Rodentia BARTKE — , thyroid, late larva, Anura BRUNO CAMPANTICO GIUNTA GUARDABASSI OLIVERO RINAUDO — , ultimobranchial body & water drive, Anura BOSCH WITZ — , prevention of hormone-induced metamorphosis, Anura TATA — , role in limb regeneration, Urodela WATERMAN mechanism of action, Vertebrata SEGAL metamorphic effect on bone & cartilage, Artiodactyla, Rodentia KNESE prostaglandins, effect on skin & derivatives, Aves, Rodentia ^^^^^^ relation to oogenesis, Homo, Rodentia WITSCHI role in fat body development, ,,^„^t Diptera BUTTERWORTH limb regeneration. Amphibia TASSAVA — — metamorphosis, Anura, Hemiptera GOLDSMITH ovulation, fertilization & early development. Homo, Primates, Rodentia BAKER primary sex differentiation, Aves LUTZ regeneration. Amphibia THORNTON SCHMIDT reproduction, Teleostei YAMAMOTO teratogenesis, Aves, Rodentia VAN DETH thyroid development, Aves THESINGH water balance, Aves THOMMES yolk sac membrane metabolism, Aves THOMMES secretion, unimplanted blastocyst, ^.^c/^vi Rodentia '-*„tt^9a sex, action mechanism, Rodentia MARUOKA site of action on DNA transcription & RNA translation, various stages, Lagomorpha CHURCH tissue responses in met£unorphosis. Amphibia KOLLROS vasopressin-like, blastula, Anura KOSTELLOW MORRILL HORN(S) antlers, experimental study, Artiodactyla HARTWIG Vertebrata FRIANT HYBRID(S) amphidiploids, Anura ^^^^^^7 NISHIOKA andromerogones, heterospecific, ...t^t-^a Amphibia '^fowlSr Anura "^^Ytttv Aves LUiz, European & Japanese forms, Anura KAWAMURA gonads, functional development, , , » ,,,^txt/-» Urodela MANCINO intergeneric, chromosomes, Lago- ^.tt^ttcv morpha McGAUGHEY 267 HYBRID(S) (contd.) — , placentation & gestation, immunology, Artiodactyla HANCOCK McGOVERN — , Urodela FERRIER interordinal, DNA svnthesis, fertilization through pluteus, Echinoidea BROOKBANK interspecific, amphidiploidy, Lepidoptera ASTAUROV VEREISKAYA — , block to development, Anwa BARTH intergeneric, chromosomes, Lago- morpha McGAUGHEY — , placentation & gestation, immunology, Artiodactyla HANCOCK McGOVERN — , Urodela FERRIER interordinal, DNA synthesis, fertihzation through pluteus, Echinoidea BROOKBANK interspecific, amphidiploidy, Lepidoptera ASTAUROV VEREISKAYA — , block to development, Anura BARTH — , chromosome fine structure & function, Diptera KAUFMANN — , chromosomes & immunology, Carnivora McGAUGHEY — , preferential activation of maternally derived alleles, Aves, Teleostei OHNO LDH isozymes, embryonic & postembryonic, Teleostei KUNZ lethal, metabolism. Amphibia, Echinoidea BRACHET DENIS metabolism, homogeneates, Anura GREGG nucleic acid metaboUsm, Echinoidea, Anura HANOCQ nucleo-cytoplasmic, interspecific, Anura KAWAMURA NISHIOKA racial, diploid & haploid, Anura MOORE — , lethal, karyotype, Anura MOORE sex determination, Anura MAJORCA sexual differentiation, Aves GOMOT sterile, reproductive system, Aves GOMOT MARCHAND subspecies, Anura PARRINELLO HYPERPLASIA see Growth HYPERTROPHY see Growth HYPOPHYSIS ACTH-production, Amphibia THURMOND adenohypophysis, histochemistry, meta- morphosis, Anura REYNOLDS — , ultrastructure, Vertebrata PEHLEMANN Anura LIANG Aves HAMMOND before & after metamorphosis, Urodela PRAHLAD Cetacea SINCLAIR connections with hypothalamus, Verte- brata ENEMAR control of endocrine function, Rodentia ROOS correlation with adrenals & gonads, Aves WOODS , in vivo & in vitro, Aves MANELLI cytology, correlation with sex differentiation, Anura HSU — , thyroidless animals, Anura YU determination, Anura EAKIN differentiation, experimental study, Aves LE DOUARIN effect on adrenal dependent phenomena, Aves THOMMES — of goitrogens, interrelation, Chelonia DIMOND — • on steroids & enzymes in gonads & adrenals, Aves WOODS experimental embryology, Aves DOSKOCIL gonadotropic function, immunologic analysis, Vertebrata SEGAL grafUng, Teleostei OLIVEREAU histophysiology, relation with osmoregulation, Teleostei OLIVEREAU hypophysectomy, effect on mineralization of scales, Teleostei NUSSBAUM interaction with pineal gland & gonads, in vitro, Rodentia LOMBARD melanophore-stimulating activity, Amphibia THURMOND neuro-, histogenesis, Carnivora, Lago- morpha XAVIER pituitary control part, mesonephros components, Rodentia ROOS pituitaryless embryos, pituitary grafts & harmone injections, Aves WATTERSON postnatal, Insectivora MORRIS relation with adrenal cortex, effect of chemical inhibitors, Teleostei OLIVEREAU adrenal gland, Aves, Mammalian MOOG thyroid, Aves THIEBOLD role in development of long bones & musculus complexus, Aves WATTERSON structure & function, Vertebrata WATERMAN transplantation, xenoplastic, species specificity, Amphibia BYTINSKY ultrastructure & enzyme histochemistry. Homo, Rodentia HACH X-ray destruction, effects on development, Lacertilia RAYNAUD HYPOTHALAMUS see Brain HYPOXIA see Respiration IMAGINAL DISCS biochemistry, cell differentiation, Diptera GEHRING cell heredity in vitro, Diptera GEHRING — proliferation & degeneration, Diptera SPREY clonal analysis, Diptera GSELL determination, transdetermination & differen- tiation, Diptera HADORN differentiation, Diptera GLOOR — , histochemistry, Diptera SPREY — in homoeotic mutants, Diptera FABER Diptera DuBENDORFER DNA replication, Diptera MORATA eye, Bar, differentiation, Diptera KAJI — , homeotic mutants, in vivo culture, Diptera OUWENEEL genital, cell heredity & determination, Diptera ULRICH head, experimental study, Diptera SCHOELLER imaginal buds, Diptera ROBERTSON WADDINGTON in vivo & in vitro, Diptera, Lepidoptera OBERLANDER intergeneric giafts, Diptera BODENSTEIN mutants interfering with disc development, Diptera GEHRING organization, Diptera URSPRUNG teratogenesis by thermal stress, Diptera HORSFALL transdetermination, Diptera PAGEOT ultrastructure, Diptera FRISTROM wing, cell proliferation, Lepidoptera L6BBECKE — , clonal analyses, in situ & in culture, Diptera GARCIA — , Diptera, Lepidoptera GOTTLIEB IMMUNOCHEMISTRY A ves, Lagomorpha eye lens, Anura, Aves MARINKOVICH CAMPBELL CLAYTON TRUMAN proteins, Aves, Homo DOORENMAALEN immunofluorescence, albumen uptake in embryo. Gastropoda ARNOLDS — , brain differentiation, Rodentia NORD — , embryotoxicity of anti-kidney serum, Rodentia GEBHARDT immunoglobulin, plasma cell, Rodentia ANDERSON Langerhans cell, origin, Rodentia REAMS protein changes, early development, Anura STANISSTREET — pattern, Teleostei LAALE — synthesis, clonal liver cells. Primates, Rodentia KAIGHN IMMUNOLOGY (developmental) actin & myosin synthesis in somite, Aves ALLEN antibodies absorption, neonatal, Insectivora, Rodentia BEGLEY MORRIS — , cytotoxic. Homo ADINOLFI — , effect on cell behaviour, Aves PARTRIDGE — , production, humoral, primary, Aves SETO — , synthesis, Rodentia FOSTER 268 — , transfer, perinatal, via placenta, fetal membranes, mammary gland, gut, Rodentia ANDERSON antigenic differences among spermatozoa, Lagomorpha KULANGARA antigens, blood, in haemolymph & tissues, Hymenopiera, Lepidoptera LENSK.Y — , brain, microcomplement fixation tech- nique, A\es WENGER — , early stages. Amphibia MACELA MACHA PALECEK ROMANOVSKY — , entoderm, pluteus, Echinoidea BROOKBANK — , histocompatibility. Homo ADINOLFI — , Miillerian duct epithelium FORSBERG — , tumors MASON anUpituitary sera, effect on development, Aves VENEZIANO brain, normal & abnormal development, Aves, Rodentia LANGMAN — , Rodentia LaVELLE cell membrane, species-specific antigenicity, Rodentia ADACHI FURUSAWA — surface antigens FEDOROFF chromatophore interactions, Urodela DUNCAN cleavage block produced by antibodies, Anura SHAVER competent cells, effect of physical & chemical agents, Aves LONGENECKER , origin & differentiation, in vitro, Lacertilia MUTHUKKARUPPAN complement, synthesis in vitro. Homo ADINOLFI effect of irradiation, Aves KNIZETOVA egg jelly, Anura SHAVER embryo, graft-host reaction, Aves EBERT — , immune mechanisms, Aves EBERT — , Vertebrata GABAJEVA embryonic immunity, Chelonia, Teleostei MOVTCHAN enzymes, Aves CROISILLE erythrocyte membrane, Rodentia ADACHI FURUSAWA eye cup & retina, Amphibia CAMPBELL CLAYTON — lens, Aves LaVELLE proteins, Aves, Homo DOORENMAALEN regeneration, Amphibia CAMPBELL TRUMAN fetal-maternal incompatibility, Lagomorpha, Rodentia DAVID relations in intergeneric hybrids, Artiodactyla HANCOCK McGOVERN — & neonatal immunity, thymus & spleen. Homo IVEMARK gonads, Lagomorpha, Rodentia ELGER graft-host reaction, immunogenetic analysis, Aves KNIZETOVA LONGENECKER — reactions, genetic analysis, Aves RUTH hematolytic disease. Primates, Rodentia VOLKOVA hibernating adults & newborns, Rodentia SIDKY histocompatibility, nuclear transplant animals, Anura McKINNELL VOLPE homograft reaction, primary, Aves SETO hybrids, interspecific, Carnivora McGAUGHEY hypophysis, gonadotropic function, Vertebrata SEGAL immune capacity, contiol mechanism, in vitro, Lacertilia MUTHUKKARUPPAN — mechanism, Marsupialia HORN — reactions against spermatozoa, effect on embryonic development, Lagomorpha MENGE , inductive role of thymus, Rodentia SIDKY — response, cell interactions FITCH , & homeostasis ROWLEY — system, Aves, Rodentia ALBRIGHT MAKINODAN immunization against spermatozoa, effect on female reproductive performance, Rodentia McLAREN immunogenesis, viing, Diptera SEIGER immunogenic response, in vitro DUTTON immunoglobulin, Aves, Lago- morpha MARINKOVICH — , lymphoid cells. Homo, Lagomorpha, Rodentia CEBRA immunomorphology, embryo, effect of temperature, Aves CRACIUN PREDA immunophoresis of basic proteins, early devel- opment, Echinoidea, Tunicata DAVENPORT implantation & development, Rodentia KIRBY induction by guinea pig liver, modification, Urodela TAMANOI interspecific tolerance, Anura LOEFFLER isoserology, multiple births. Homo VOLKOVA lens proteins, Vertebrata BRAHMA limb regeneration, nerve influence, Urodela THORNTON lymphocyte competence, mitogens, Aves, Rodentia VAN ALTEN macrophages, role in antibody synthesis, Rodentia ARGYRIS maturation of immune capacity, Rodentia ARGYRIS microtubule proteins, comparative study, Echinoidea KIMURA muscle development, Aves LANGMAN ontogeny of mechanism, Aves, Rodentia VAN ALTEN oocyte maturation & early embryogenesis, Chondrostei, Teleostei APEKIN organ-specific proteins, kidney, Aves CROISILLE origin of immunoglobulins, Aves RUTH immunologically competent cell, Aves RUTH pregnancy, Rodentia BILLINGTON JAMES protection of fetus, role of giant cells, Rodentia SOLOMON radiation effects on haematopoietic organs, Rodentia TAMANOI red blood cells, membrane differentiation, Aves D'AMELIO regeneration, effect of antiserum, Urodela TABAN relation between mother & embryo, Rodentia ZIMMERMANN — of mother & fetus, Mammalia HEMMINGS — with neoplasia, Amphibia RUBEN nuclear transplantation. Amphibia ROMANOVSKY SLADECEK wound healing. Mammalia WATTS reproduction, Homo, Mammalia EDWARDS Rhesus factors. Homo DAVID role of thymus, Rodentia YAMAGUCHI seminal antigens, Artiodactyla, Homo KULANGARA — plasma protein antigenicity. Homo NAKABAYASHI sex determination, Rodentia FURUSAWA skin graft reaction, Anura BOVBJERG — , hypersensitivity reactions, Anura, Homo, Rodentia FORTAK sperm antibodies BEHRMAN spermatogenesis, Rodentia BISHOP spleen grafts, activity against organ-specific antigens, Anura NEWTH stage specific proteins & enzymes, Artiodactyla KARLSSON testis specific antigens, Rodentia AWATTA tissue antibodies, teratogenic & embryotoxic effect, Aves, Rodentia McCALLION tissue-specific antibodies, effect on dif- ferentiation, Anura SHAVER tolerance induced by intracoelomic grafts, Aves MUN — , influence of embryonic thymus extracts, Rodentia CZAPLICKI — , neural crest homotransplantation, Anura VOLPE — , xeno- & homograft, Urodela TABAN transplantation antigens, immunofluorescence, Aves RUTH trophoblast, antigenicity, Lagomorpha, Primates, Rodentia BEHRMAN IMPLANTATION see Blastocyst INDUCTION (embryonic) see also Competence; Determination; Epithelial -mesenchymal interactions; Organization agents, effect on RNA metabolism of dissociated embryonic cells. Amphibia lYEIRI Amphibia MASUI cartUage, by notochord & neural tube, Aves STRUDEL 269 INDUCTION (contd.) Cephalopoda MARTHY cranium, Aves SCHOWING during regeneration, Turhellaria LENDER ectoderm, in solutions of inducing substances, Urodela KOCHER effect of Wolffian duct on mesenchyme, in vitro, Aves MARTIN electron microscopy, Anura EAKIN endoderm-mescnchyme interaction, pancreas, in viuo, Aves DIETERLEN epiblast & hypoblast, sepaiation by membranes, Aves WOLK epithelio-mesenchymal relationships, pancreas, Vertebrata GROBSTEIN eye lens, Aves MODAK , by larval eye tissues, Urodela LOPASHOV , histochemistry, Aves STARRE in vitro, Aves STARRE , induction systems, Urodela REYER , proteins, immunology & immuno- chemistry, Aves, Homo DOORENMAALEN — tissues, transfiltcr, Anura HOPERSKAYA gastrulation, Urodela DOUCET guinea pig liver, modification of effect by immunological technique, Urodela TAMANOI heart development in vitro, Urodela FULLILOVE — , endodermal induction, Aves FAINSTAIN — , — inductive factor, Urodela JACOBSON Henscn's node, effect of actinomycin, Aves GALLERA heterogeneous, Aves McCALLION — inductors, ectoderm, Aves ROSTEDT , specificity of action. Amphibia JOHN EN TOIVONEN in vitro SATO inductive capacity, presumptive endoblast & mesoblast cells, primitive streak, Aves GALLERA influence of X-rays, Urodela REYSS kidney tubules, Rodentia LOMBARD mechanisms, Aves GALLERA mesenchymal, organ specificity, Rodentia KRATOCHWIL mesoderm, blastula, Urodela BOTEREN BROOD NIEUWKOOP mesodermal factor, Urodela KOCHER messenger RNA, Anura EVANS morphogenetic substances, characterization & action, Vertebrata TIEDEMANN Na dependence, Anura BARTH neural, cell changes, Anura DEUCHAR — , temporal aspects, Aves HARA neurulation, latency period, Aves GALLERA nose, lens, ear, Urodela JACOBSON nucleic acid synthesis, ectoderm, Urodela KOHONEN TOIVONEN pancreas & salivary gland in vitro, synthesis of macromolecules, Rodentia BERNFIELD pancreatic exocrine cells, Rodentia WESSELLS primary, Aves LEIKOLA — , cytochemistry, Urodela HAYASHI — , enzyme activity, mitotic index, Anura COWARD — , isolation & biochemistry of factor, Anura FAULHABER — , macromolecular synthesis, Urodela IMOH — , mechanism, Urodela SAXEN TOIVONEN — neural, Aves ENGLAND — , nucleic acids & proteins, Urodela KAWAKAMI — , tracer studies, Aves NICOLET quantitative cytochemistry, Vertebrata VAHS regional effect as related to molecular structure, Aves, Urodela SASAKI regionally specific, Urodela ENGLaNDER retina, Anura, Aves HOPERSKAYA LOPASHOV rhombencephalic & anterior spinal cord region, Aves WIERTZ role of interface materials, Verte- brata GROBSTEIN SH groups, Aves MULHELKAR spleen, early development, Aves DIETERLEN Teleostei LA ALE time factor, Urodela JOHNEN urogenital system. Amphibia, Aves LEPORI INFECTIONS see Bacteria; Virus see also Pathology INNERVATION see Nerve(s) INSEMINATION see Reproduction (sexual) INSULAR TISSUE see Pancreas INSULIN blood level in fetus & mother, Rodentia FELIX JACQUOT SUTTER in developing pancreas, Aves, Rodentia COALSON mode of action WOOL placental transport, Primates REYNOLDS teratogenesis, Aves LANDAUER INTEGUMENT see also Skin bristle forming cells, gene activation, Diptera RIBBERT — patterns in genetic mosaics, Diptera CLAXTON bristles, experimental analysis, Heteroptera LAWRENCE chitin synthesis, control of, tracer studies, Decapoda STEVENSON chitinogenic cell of maxillary bud, Heteroptera PINET cuticula, leg regeneration, Dictyoptera LEOPOLD foot & mantle, histo- & biochemistry, Mollusca BOLOGNANI inductive interactions, comparative study, Invertehrata, Vertebrata KREJSA moulting cycle, ultrastructure & physiology, Lepidoptera LOCKE shell gland, cytochemistry & physiology. Gastropoda TIMMERMANS , Mollusca GATHER — , morphology & electron microscopy, Cephalopoda FIORONI ultrastructure, Trematoda LYONS INTERSEXUALITY see Sexual development INTESTINAL TRACT absorption of nutrients, Rodentia VOLLRATH Anura KHAN chemo-differentiation, electron microscopy, Rodentia VOLLRATH disaccharidases, Carnivora, Rodentia KRETCHMER effect of X-rays, biochemistry, Aves GASC enzyme induction, Rodentia VOLLRATH epithelium, cell renewal & differentiation, Urodela MARTIN — , differentiation, Annelida, Crustacea BAFFONI — , electron microscopy, Anura HOURDRY — , , Mammalia YAMAMOTO — , postnatal maturation. Mammalia BECK esophagus, metaplasia, Aves, Homo MOTTET fetal & postnatal, enzyme biochemistry, Rodentia MOOG mid-gut, origin & differentiation, Diptera POULSON IODINE organic compounds in thyroid gland, Chelonia DIMOND IONS Ca, Na, K, Mg, role in egg activation, Anura MORRILL electrolytes, role in regeneration & meta- morphosis. Amphibia BURKART inorganic, effect on cell differentiation, Hydroidea MACKLIN ionic changes in blastula associated with morphogenesis & cell differentiation, Anura KOSTELLOW MORRILL metal, effect on development, Pulmonata MORRILL — , & regeneration, correlation with effect on enzymes, Echinodermata, Turbellaria HEIN 270 Na, embryonic induction, Anura BARTH Na+ transport into blastocoel & germ layer, Anura KOSTELLOW MORRILL polyanions, effect on nucleic acid meta- bolism, Aves TEMPEL IRON IRRADIATION see also Ultraviolet irradiation; X-irradiation biochemical effects, Anostraca , Anura, Teleostei NAICAZAWA TAGUCHl YAMADA change in sensitivity, Teleostei EGAMI cobalt, spermatocytes, chromosome breaks & repair, Rodentia McGAUGHEY cosmic rays, interaction with weightlessness, Rodentia DOBROWOLSKI effect of nuclear labelling. Amphibia CHIBON — on circulatory system STEARNER development, part, blood-forming tissues, Marsupialia BLOCK differentiation & metabolism, embryo, Orthoptera TAHMISIAN early stages, morphology & physiology, Carnivora, Lagomorpha, Rodentia HUNT embryo, Anostraca IWASAKI , Lepidoptera TEULADH , Teleostei EGAMI fetus, alleviation, Rodentia PANTELOURIS germ cells, Rodentia BEAUMONT hematopoietic organs, immunochemisiry, Rodentia TAMANOI immunology, Aves KNIZETOVA karyotype, Aves, Rodentia SRB lympho-myeloid tissues. Mammalia THOMAS methylated xanthine-treated eggs, Echinoidea CHENEY nervous system MULAREK WENDCR phosphatases & lysosomes, Aves TEMPEL spermatogenesis, Lepidoptera IWASAKI embryo, germ cells, genetics, Diptera SHIOMI YOSHIKAWA germ cells, change in sensitivity, Teleostei HYODO — — , fine structure. Primates, Rodentia FRANCHl gonads, Coleoptera BLUZAT Homo, Mammalia REVESZ inducing embryonic death, Hymenoptera AMY ionizing, effect on development & regeneration. Amphibia SCHOTTE — , early stages, Coleoptera BLUZAT — , embryo, different temperatures, Teleostei WADLEY WELANDER —, — — —, Mammalia BORGHESE — , , Rodentia HOSHINO KAMEYAMA MURAKAMI NAKAYAMA TAMBOISE — , embryonated egg, Aves RODRIGUES XAVIER — , gametogenesis, Pisces PERSOV — , regeneration, regression. Amphibia SCHOTTE low doses, long term effects, Teleostei ETOH maternal, effect on ovary of young, Rodentia PETERS melanophores, changes in reactivity, Teleostei FUJII morphological & functional effects, Rodentia MURAMATSU nuclease inhibitors, Aves TEMPEL oocytes, relation with structure & function of chromosomes. Mammalia FRANCHl radio-embryology, various problems. Mammalia RUGH sensitivity of brain, Rodentia MURAKAMI haploid & diploid embryos, Anura HAMILTON spermatozoa, effect on zygote development, Lagomorpha DOTT undifferentiated cells, activity, normal & regenerating animals, Turbellaria CHANDEBOIS Vrodela BRUNST JAW(S) see Skull JOINT(S) see Skeleton KARYOTYPE see Chromosome(s) KIDNEY(S) arginase activity, Rodentia BRADLEY ATPase, Rodentia WAYMOUTH cells in vitro, thermotolerance, Artio- dactyla HARRIS compensatory response to unilateral nephrectomy, Arliodactyla, Lagomorpha BERTON effect of Wolffian duct on mesenchyme, in vitro, Aves MARTIN enzymes, experiments with actinomycin D, Rodentia SCHIEBLER function, ArtioJactyla NIXON functional development, fine structure, Aves DOSSEL Mammalia SPENCER mesonephros components, culture, interactions, endocrine & neural control, Rodentia ROOS — , cytology, histochemistry & culture, Aves AM ADO — , descriptive & experimental study, Anura CAMBAR — differentiation, induction, Aves MARTIN — , experimental embryology, Anura ARNAULD — , regression, biochemistry & cytochemistry, Aves RUSSO — , ultrastructure, Anura CAMBAR — & metanephros, effect of aminoguanidine, Aves WATTERSON , relation to embryonic fluids, Arlio- dactyla, Lagomorpha BERTON metabolism. Mammalia DEUTSCH metamorphosis, experimental study, Anura ARNAULD metanephros, histochemistry, Artio- dactyla BYLINA morphological changes, pre- & postnatal, Rodentia BLOUNT nephrectomy, effect on lung, Artiodactyla, Lagomorpha BERTON pronephros, growth & degeneration, electron microscopy, Anura FOX — & mesonephros grafts, hypo- & hyper- thyroid condition, Anura FOX — , ultrastructure, Anura CAMBAR proteins, organ-specific, Aves CROISILLE proximal tubules, excretory activity, ultra- structure, Rodentia ROLLHaUSER regeneration, functional hypertrophy. Mammalia ARGYRIS Rodentia BORGHESE role in erythropoiesis, Rodentia GIOVANNINI tubules, induction, Rodentia LOMBARD tubulogenesis in vitro, electron microscopy, Rodentia WARTIOVAARA — , Rodentia SAXEN LABYRINTH see Static organ LARVAL DEVELOPMENT see Development (larval) LARYNX see Respiratory tract LATERAL LINE SYSTEM LENS see Eye lens LEUCOCYTES see Blood LIFE CYCLE(S) see also Development (general) Crustacea ICHIKAWA parasitic forms, Copepoda COSTANZO pedogenetic-bisexual forms, Diptera ULRICH , morphology, physiology & cvtology, Diptera CAMENZIND Teleostei BALON LIGHT egg reactivation, Hymenoptera L6BBECKE photoperiod, effect on diapause, Diptera BRUST 271 LIMB(S) see also Regeneration (traumatic); Skeleton; Wing(s) branchial structures, Rodentia VERVVOERD bud, ectodermal ridge & distal system, histochemistry, enz>mes, Aves NAVAGIRI — , epithelial-mesenchymal interactions, position of Golgi complex, Aves, Rodentia TRELSTAD — , experimental phocomelia & normal development, Rodentia KOCHHAR — , — studies, Aves EDE — , formation & regression, Lacertilia RAYNAUD — , histochemistry, Lacertilia RAYNAUD — , mesoblast, Aves, Rodentia JURAND mesoderm, regulation, Aves DUBEY PATIL — , organ culture, Aves PINOT — , , Urodela WILDE — , relation to somites, Lacertilia VASSE — , RNA & DNA, epidermal & mesodermal cells, Lacertilia RAYNAUD VASSE digital malformations, X-irradiation, Rodentia NOGAMI , early stages, Anura TSCHUMI ectoderm-mesoderm interaction, Aves SAUNDERS SEARLS ZWILLING , xenoplastic chimaeras, Aves PAUTOU ectrodactyly. Amphibia ROSTAND effect of spinal cord transplantation on motion & action pattern, Aves NARAYANAN ultraviolet radiation, Urodela BUTLER embryonic development, descriptive & experimental, Cheleiitoptera FOURNIER epidermal-dermal interaction, Aves WESSELLS experimental embryology, Aves SEICHERT STEDING , Urodela AMANO interaction with wing, xenoplastic chimaeras, Aves PAUTOU late regulation, Aves LAZARD PINOT malformations, mechnisms, Rodentia KAMEYAMA — , vitamin A, Rodentia NOGAMI mesenchyme cells, normal & mutant, behaviour & differentiation, Aves FLINT mesoderm-ectoderm interaction, Aves GOETINCK morphogenesis, cell death, Vertebrata FALLON mutants, Rodentia CENTER organ culture, Vertebrata ZAAIJER pattern formation, Polydactyly mutant, Rodentia KOCHER Polydactyly, Amphibia ROSTAND — , experimental analysis, Aves DUBEY primary induction, orientation & morpho- genesis, ecto-mesodermal interactions, Aves KIENY regeneration, transplantation, polarity & gradients, Orthoptera BOHN relations between axial & lateral mesenchyme, Aves PINOT skeletal morphogenesis, regulation & com- petition, autoradiography, Aves KIENY skeleton. X-ray analysis, Aves GOFF supernumerary, differentiation & feather growth, Aves DHOUAILLY — , locomotion studies, Urodela BRaNDLE syndactylism, experimental, Aves DELEANU transplantation, extirpation, effect on spinal cord, Aves DUBEY twinning, experimental analysis, Aves AMPRINO — , nerve patterns, Aves CAMOSSO vascular system, Homo, Mammalia MAZHUGA LIPID(S) (& fatty acids) see also Adipose tissues carboxyUc acids, effect on cleavage & cell division, Urodela SENTEIN cell membrane, Aves GOLDHOR glycolipids, metabolism, Crustacea, Insecta DUTRIEU histochemistry, pathological placenta. Homo IVEMARK metabolism, as affected by mutants, Diptera DOANE — , effect of maternal diet, Aves DONALDSON neuronal maturation, Rodentia LaVELLE phospho-, larva & adult, Anura LOBO — , larval development, Diptera — , nervous system, Teleostei salivary gland, Rodentia transport by yolk sac placenta, Rodentia CHITNIS KAMAT OPPENHEIMER PRITCHARD GAUTHIER PADYKULA TAYLOR LITHIUM effect on ectodermal differentiation capacities, Urodela ENGLaNDER embryo, cell-lineage. Gastropoda VERDONK treatment of gastrula, effect on vertebral column, Urodela MAUGER LIVER see also Gall bladder (& bile ducts); Regeneration (traumatic) aiginase activity, Rodentia BRADLEY biUary tract, functional development, Homo TAKITA cellular differentiation, biochemistry, Aves LE DOUARIN clonal cells, plasma protein synthesis. Primates, Rodentia KAIGHN effect of aminoguaiiidine, Aves WATTERSON ethanol, histochemistry, biochemistry, Rodentia CRISTEA electron microscopy. Mammalia HATAE enzymes, distribution & activity, Anura, Rodentia BOCZKOWSKA — , formation & activity, Anura SHUKUYA — , tyrosine oxidizing, regulation & development, Vertebrata GOSWAMI experimental study, Aves LE DOUARIN fetal, hematopoiesis, Rodentia JACQUOT NAGEL — , RNA/DNA hybridization, Rodentia CHURCH functional development, fine structure. Axes DOSSEL glucose & glycogen, pre- & postnatal, electron microscopy, Rodentia JACQUOT PLAS glycogen, embryo, Aves DAUGERAS growth induction by drugs, Rodentia ARGYRIS hepatocytes in vitro, glucose & glycogen, Rodentia JACQUOT PLAS histogenesis, effect of metabolities in vitro, Aves LEVENSON hormone influence on protein synthesis, Rodentia MALPOIX inorganic salts compared to level in blood plasma, Anura, Rodentia WYSOCKA Mammalia SPENCER metamorphic differentiation, biochemistry, thyroxine action, Anura COHEN neonatal, cytology, histochemistry, electron microscopy, Rodentia MALET POURHADI TURCHINI LOCOMOTION see Behaviour LONGEVITY hereditary & environmental factors, Insecta ROCKSTEIN LUNG(S) (& air sacs, swim bladder) ATPase, Rodentia WAYMOUTH development after nephrectomy, Artiodactyla, Lagomorpha BERTON electron microscopy, effect of urethane, Rodentia HERMAN KAUFFMAN enzymes, distribution & activity, Anura, Rodentia BOCZKOWSKA epithelium, action of heterologous mesenchyme, ultrastructure, Aves DAMERON MARIN — , ultrasuucture, Aves DAMERON MARIN experimental morphology, Aves LEMEZ fetal, development & birth changes, experimental study, Artiodactyla, Rodentia TOWERS inorganic salts compared to level in blood plasma, Anura, Rodentia WYSOCKA mesenchyme, reassociated with pancreas, enzymes, Aves DIETERLEN 272 morphogenesis, dissociation & reassociation in vitro. Axes DAMERON MARIN niorphogenetic substances, Aves BEAUPAIN organogenesis, role of Inducing substances from mesenchyme, Aves MARIN postnatal growth, Marsiipialia STRATFORD vasculature, fetal & neonatal, Artiodactyla, Rodentia REYNOLDS LYMPHATIC SYSTEM see also Spleen; Thymus development & immunology, Aves KNIZETOVA — , transplantation, irradiation. Mammalia THOMAS lymph gland, regeneration, Aves, Reptilia ASNANI BONNY lymphoid cells, immunoglobulin, Homo, Lagomorpha, Rodentia CEBRA — organs, histochemistry & ultrastructure, in vivo & in vitro COMOGLIO — primordia, histological & metabolic maturation, Aves RUTH LYMPHOCYTES see Lymphatic system LYSOSOMES see Subcellular components MACROPHAGE SYSTEM influence on liver regeneration, Rodentia STERN MAGNETIC FIELDS effect on nervous system, Aves VENEZIANO MALFORMATIONS see also Teratogenesis achondroplasia, histology & biochemistry, Homo, Lagomorpha SHEPARD anencephaly. Homo TUCHMANN — , morphogenesis, Homo PASSAPONTI Aves STOLL axial, induced by trypan blue & RNA-se, Aves LANOT biological study, etiology, Homo BERNDORFER blood vessels, experimental, Aves, Homo, Mammalia KREDIET brain, Rodentia AUROUX branchial region, Amniota, Homo SLIPKA cardio-vascular, teratogenesis, Aves STePHAN cataract, anterior polar, Carnivora SHUPE central nervous system, experimental, Lagomorpha, Rodentia NAKAMURA chromosome aberrations, virus induced. Homo MAKINO cleft palate & lip, Artiodactyla, Carnivora SHUPE comb & beak, after neural crest removal, Aves LAWRENCE congenital, chromosomes, Homo BULSIEWICZ CZAPSKA DZIUBA — , epidemiology. Homo KALLEN — , etiology, Rodentia MIKAMI — , relation to dermatoglyphics. Homo DZIUBA — , placental vessels. Homo VARMA — , Rodentia NAGAE — , skeletal, mucopolysaccharides, Rodentia KLEINEBRECHT cyclocephaly, morphology of head region. Gastropoda RAVEN cyclopia, effect on skull, Aves SCHOWING — , Veratrum induced, Artiodactyla EVANS cytogenetics, Artiodactyla ISHIKAWA — , Homo KAJII digital, X-irradiation, Rodentia NOGAMI double, by centrifugation of eggs, Diptera YAJIMA ductus aiteriosus, open, experimental study, Artio- dactyla, Lagomorpha, Rodentia H6RNBLAD duplicitas cruciata, experimental, Orthoptera KRAUSE ectrodactyly. Amphibia ROSTAND exencephaly, Rodentia HOSHINO MURAKAMI exostosis, multiple, Perissodactyla SHUPE eye, gene-conditioned, Rodentia GUMBRECK eyes open at birth, inherited, Rodentia STEIN face & palate, PGA deficiency, Rodentia ASLING genital & urinary, Rodentia ALLISON harelip. Homo heart, Artiodactyla — , Aves — & great arteries. Homo vessels, Home, Mammalia — , Homo — , Rodentia Homo LIMBORGH NIE PAVKOV ROBERTSON KREDIET LOS ROUX BAGINSKI NIE RAPOLA SCHRAMM hydrocephalus, 6-aminonicotinamide, Rodentia CHAMBERLAIN — • induced by virus infections, Rodentia MARGOLIS — , p02, Rodentia CHAMBERLAIN induced by irradiation, relation to heterosis. Mammalia RUGH inherited, prevention by drugs, Rodentia KONYUKHOV inner ear, Mg deficiency, Rodentia ASLING intrauterine regeneration, Homo BERNDORFER in vitro, Rodentia WRBA jaws, experimental, Rodentia KNUDSEN larval, Teleostei BRAUM limb & digits, vitamin A, Rodentia NOGAMI — , mechanism, Rodentia KAMEYAMA Mammalia LUTWAK NIE WOOLLAM mechanisms, part, nervous system, Rodentia GIROUD musculo-skeletal, Artiodactyla SHUPE myeloschisis, Aves WATTERSON nervous system, experimental, Rodentia KNUDSEN oral cavity, experimental, Rodentia KNUDSEN origin, development & transmission, Turbellaria SCHILT STePHAN esteochondromatosis, Perissodactyla SHUPE Polydactyly, Amphibia ROSTAND — , experimental analysis, Aves DUBEY pulmonary vasculature, Homo ROBERTSON single & double monsters, Aves WOLFF situs inversus, caused by defects & external factors, Urodela WOELLWARTH spina bifida, experimental production, embryogenesis of defects, Rodentia LENDON , Rodentia HOSHINO MURAKAMI syndactylism, experiment, Aves DELEANU Urodela BRUNST urogenital system, gene conditioned, Rodentia GUMBRECK vascular changes in digestive system, Rodentia MARSK — system, brain & head, Rodentia BUGGE KNUDSEN vertebral column, Aves STRUDEL MALPIGHIAN TUBULES see Excretory system MAMMARY GLAND see Gland(s) MATERNAL EFFECTS see Genetics MATERNAL INHERITANCE see Genetics MATHEMATICS see Theoretical biology MATURATION see Egg(s) MEIOSIS see Egg(s) see also Oogenesis; Spermatogenesis MELANIN see Pigment(ation) see also Melanophore(s) MELANOPHORE(S) see also Neural crest; Pigment(ation) behaviour, hormonal influences, Anura BYTINSKI — • in skin, factors involved, Aves, Rodentia REAMS 273 MELANOPHORE(S) (contd.) cell affinities, time-lapse cinematography, Urodela BRICK — surfaces, genetic control, Urodela BRICK cutaneous, disappeaiance in juveniles, Teleostei MORI determination, molecular, Urodela BRICK differentiation, causal biochemistry, Urodela WILDE — , effect of amino acids, Aves FINNEGAN WIREN effect of hormones, Rodentia SPAZIANI tissue environment, Aves, Rodentia REAMS identification of melanoblasts, Aves KOECKE melanin formation, gene interaction, Rodentia PIERRO — synthesis, regulatory mechanisms, Aves, Tunicata WHITTAKER pigment granules, formation & movement, Teleostei BEREITER populations, differentiation & proliferation, genetic control, Vertebrata SCHAIBLE reactivity to irradiation, Teleostei FUJII tyrosinase, multiple forms, genetic regulation, Rodentia QUEVEDO MERISTEMS see Plant embryology & morphogenesis MEROGONES see Genetics; Hybrid(s) MESENCHYME endo- & ecto-, cytochemistry, electron microscopy, Urodela FINNEGAN limb, normal & mutant, behaviour & differentiation, Aves FLINT primary cells, electron microscopy, Echinoidea UEMURA MESODERM see Embryology (experimental) MESONEPHROS see Kidney(s) METABOLISM (general) see also Energy; Respiration anaerobic, in fetus. Homo DEROM Aves NABER carbohydrates, embryonic diapause, Anostraca CLEGG changes in development, Aves SEARLS early embryo, Aves REPORTER — embryonic tissues, Aves McKENZIE — post-implantation stage, in vitro, Rodentia GUNBERG egg & embryo. Gastropoda GEILENKIRCHEN , Orthoptera HANSEN — , Mammalia BIGGERS — maturation, Echinodermata, Urodela FICQ embryo, Echinoidea, Amphibia TENCER end-products, embryo & larva, Amira ARIMA germ cells, effect on radiosensitivity, Rodentia BEAUMONT glycolysis, Anura DEL RIO homeothermy, neonatal & juvenile, Marsupialia ARNOLD SHIELD in vitro, Rodentia WRBA inhibitors, cytological effects on early embryo, Aves McKENZIE Insecta GOURDOUX larva, pupa, diapause, Insecta MOREAU metabolic rhythm, cleavage, Echinoidea NEMOTO neonatal & juvenile, Marsupialia ARNOLD SHIELD normal & hybrid, homogenates, Anura GREGG oogonia & oocytes. Primates, Rodentia BAKER pathways, morphogenesis WEGMANN preimplantation stages, Rodentia TANNER primordial germ cells, Anura CLARK respiratory, Anura LEGNAME METAMORPHOSIS adenohypophysis, histochemistry, Anura REYNOLDS biochemistry, Anura SPIEGEL — & histochemistry, Diptera RUSSO blood antigens, Hymenoptera, Lepi- doptera LENSKY calcification. Amphibia PILKINGTON cell death, role of lysosomes & hormonal control, Anura, Hemiptera GOLDSMITH collagen deposition, Anura REYNOLDS comparative study. Amphibia DENT cutaneous glands, histochemistry, Anura FRASCHINI Cyclostomata BAXTER effect of artificial weightlessness, Anura BRIEGLEB TEUCHERT antibiotics, Urodela FANKHAUSER hormones, Insecta SCHMIALEK thyreostatic agents, Anura, Reptilia PFLUGFELDER — on protein synthesis, ribosomes, RNA, Lepidoptera WYATT electron microscopy, Anura WATANABE endocrine control, Decapoda HUBSCHMAN enzymes of tyrosine degradation, Anura GOSWAMI excretory system, Anura CAMBAR GIRARD Gastropoda FRETTER gonads, organ culture, Anura FOOTE head, functional development, Anura JONGH hematopoiesis, Anura SALVATORELLI hemoglobin switch, genetic control, Anura HAM AD A KAJITA SHUKUYA hemolymph, proteins, Hymenoptera LENSKY holometabolic forms, Diptera, Hymen- optera EMMERT SCHMIDT hormonal control, cellular aspects, Diptera, Lepidoptera OBERLANDER hydrolytic enzymes, Anura FORTAK hyper-, endocrinology, Coleoptera CHURCH hypothalamo-pituitary-thyroid axis, Urodela PRAHLAD influence of light & high temperature on development of a neotenic species, Urodela BRIEGLEB intestinal epithelium, electron microscopy, Anura HOURDRY isozymes, changes, Anura KAJITA SHUKUYA kidney, experimental study, Anura ARNAULD lunar periodicity, Diptera NEUMANN metabolism, Insecta MOREAU metamorphic competence, early, induced by thyroid hormones, biochemistry, Anura TATA myofibrils & sarcotubules, Diptera BEINBRECH pancreas, electron microscopy, Anura BEAUMONT physiology & biochemistry, Diptera, Lepidoptera SHAPPIRIO — , Coleoptera NAIR — , Diptera ROCKSTEIN Polychaeta BERRILL CAZAUX NOYES protein & RNA synthesis, role of ecdysone, Diptera SEKERIS pupa, diploid drones, reproductive organs & spermatogenesis, Hymenoptera WOYKE pupal development, effect of deoxyriboside base analogues, Diptera BROWN CRAIG — diapause & adult development, DNA metabolism, effect of hormones, Lepidoptera BARTH regeneration, role of hormones Urodela MANNER retinal changes, Anura HOLLYFIELD role of electrolytes. Amphibia BURKART second, water drive, effect of prolactine & ultimobranchial body, Anura BOSCHWITZ skeleton, electron microscopy, Anura KEMP skin, with & without extra thyroid hormone, Anura BOVBJERG tail, collagen fibre resorption, Anura ITO — , morphological changes, Anura DE SILVA — resorption, lysosomes, Anura BODMAN thyroid deficiency, Anura BOSCHWITZ induced, biochemistry, tissue sensitivity, Urodela PRAHLAD thyroxine, effect on isolated tail, Anura HICKEY WEBER 274 — -induced, Anura — , local action, Anura — & RNA synthesis, Anura — , uptake & tissue localization, Anura tissue culture studies, Anura — involution, Anura TATA KALTENBACH STADLER WEBER REYNOLDS NIIZIMA PERNARD WEBER — response & control of sequence, Anura KOLLROS tropical forms, Echinoidea, Mollusca D'ASARO various metabolites, Diptera, Lepidopiera LAL MORRIS PANT VARMA METANEPHROS see Kidney (s) METAPLASIA esophagus, regulating mechanism, Aves, Homo MOTTET eye tissues in vitro, biochemical, Aves WHITTAKER , Teleoslei LOPASHOV SOLOGUB METHODS (& equipment) see also Rearing methods MICROCINEMATOGRAPHY asexual reproduction, Porifera EFREMOVA behaviour of clones of connective tissue cells, Aves TRINKAUS chromosome behaviour in relation to differentiation, embryo, Diptera, Mammalia, Polychaeta, Turbellaria MELANDER cleavage pattern & gastrulation, Anura, Urodela BOTERENBROOD HARA embryonic axial organs, Aves MENKES isolated embryonic cells, movement. Amphibia, Echinodermata, Pisces SIRAKAMI morphogenetic movements, Aves SPRATT , heart primordium, Aves DeHAAN , marginal tissue, Aves SCHLESINGER & tissue differentiation, Rodentia DEUCHAR Nematode GUERRIER nervous system, Aves BAGINSKY normal development, Aves LUCEY nuclear transfer technique. Amphibia LUCEY nucleolus, myogenesis in vitro, Aves, Rodentia GAYER HROCH PUZA spiral cleavage, Jnvertebrata GUERRIER time-lapse, Aves ELI AS , cell affinities, melanophores, Urodela BRICK ^ — , cleavage. Amphibia, Echino- dermata, Pisces SIRAKAMI , contact inhibition, myocardioblasts, Aves BETCHAKU , early stages, Aves SANDOR , embryos exposed to teratogenic agents, Aves GRABOWSKI , myogenesis in vitro, Aves, Rodentia GAYER , regeneration blastema, Turbel- laria BETCHAKU , specific ultrastructures, early stages, Diptera WOLF , tonofilaments, epidermis, development, wound healing & tissue culture, Teleostei BEREITER MINERALS Ca & Fe, localization, Artiodactyla, Aves, Homo LHOTKA — metabolism. Mammalia SCHRYVER calcification. Amphibia, Echinoidea PILKINGTON Cd, effect on reproductive tract. Mammalia CLEGG scales, Teleostei KREJSA LUSE MITOCHONDRIA see Subcellular components MITOSIS see also Antimitotic agents; Cell(s)-division; Cleavage; Growth factors amitosis, induction BAND — , myogenesis in vitro, Aves, Rodentia PUZA — , uluastructure, Vertebrata PEHLEMANN apparatus, as a motile system, Echinoidea KIEFER — , eggs and embryos, Echinoidea IVERSON argyrophile & argentaffin cells, digestive Uact, Homo SINGH binucleate cells, Aves BARASA GODINA central nervous system. Amphibia BAFFONI contact inhibition, cells in vitro STEINBERG conuol, Anura ARTHUR BALLS MONNICKENDAM cortical contractile protein, Echinoidea SAKAI cycle, effect of temperature & thyroxine, autoradiography, Urodela BRUGAL — , relation to nuclear function & RNA, early stages, Echinoidea, Teleostei, Urodela ROTT developmental instructions, theoretical study LINDENMAYER DNA synthesis, larval testis, Diptera PAPACONSTANTINOU duration, mechanism, relation to differen- tiation, Amphibia, Chondrostei DETTLAFF early development, Teleostei KIRCHEN effect of carboxylic acids, Urodela SENTEIN ependyma of brain. Homo BOSSY eye lens, Rodentia ARMSTRONG hormonal regulation, Rodentia LAGUCHEV in vitro, effect of cell density, Aves, Rodentia NJEUMA hmb regeneration blastema, various treatments, Urodela HEARSON Rodentia BERTALANFFY liver parenchyma, regeneration, mechanism, in vitro, Echinodermata KANE micrurgical studies, Anura, Crustacea, Echinoidea RAPPAPORT myogenesis in vitro, Aves, Rodentia PUZA neoplastic cell populations, Rodentia BERTALANFFY peripheral nervous system. Amphibia FRATELLO proliferation, Aves CAMERON — , effect of cytosine arabinoside, Rodentia BERTALANFFY — , imaginal disc, Diptera SPREY regulation, Echinoidea CZIHAK — , Insecta POHLEY — , intercellular interactions & synthesis, Vertebrata SALAMATINA TUMANISHVILI relation with differentiation, Rodentia COWARD , skeletal muscle & mammary gland, Aves, Rodentia STOCKDALE spindle, cytochemistry, Diptera MATUSZEWSKI synchrony, early stages, Coleoptera MAISONHAUTE transhydrogen catalyzation between cell cortex & mitotic apparatus, Echinoidea SAKAl MONSTROSITIES see Malformations MORPHOGENESIS see also Culture; Development; Embryology; Plant embryology & morphogenesis; Tissue culture; Unicellular organisms adult, effect of X-rays, Polychaeta SOLBANI — ■ tissue homogenates, effects on early embryo, Aves McKENZIE Anthozoa CONAN arm formation, larvae, Echinoidea FINNEGAN LARRIVEE biochemical mechanisms BRODY cell affinity changes. Amphibia, Aves GRUNZ — constituents WERZ — movements. Gastropoda SATHANANTHAN — & tissue migrations, Hydroidea DIEHL cellular basis, Hydroidea WOLPERT — dedifferentiation, regeneration & asexual reproduction, Actinoioa POLTEVA cilia, blastula, protein synthesis, Annelida, Echinoidea AUCLAIR descriptive & experimental, Porifera BOROJEVIC LEVI diffusion-reaction mechanisms, Diptera SONDHI disruption by hormones, Diptera ADAMS effect of irradiation. Amphibia SCHOTTE 275 MORPHOGENESIS (contd.) nucleic acid analogues, Diptera RIZKI epiboly, electron microscopy, Teleostei THOMAS experimental studies, Ciliata DE TERRA formation of curved structures from flat sheets, Axes ^^^ histochemistry, Vertebrata GOFF Hydrozoa HAYNES ^ TARDENT in cell cultures. Homo ELSDALE in vivo & in vitro, Annelida MARCEL inhibitors, part. /5-mercapto-ethanol TUFT molecular, descriptive & biochemical SJ6STRAND morphogenetic agents, action on cell o-n,^xT behaviour. Ares ^ cf t ic , gene expression, Echinoidea ELLls movements, Amphibia NAKAMURA — , blastoderm expansion, Aves DOWNIE — & cell contacts, Echinoidea GUSTAFSON — , cellular specificities responsible for, Aves, Rodentia BURDICK — , cinematography, embryo in vitro, Rodentia DEUCHAR — . correlation with electric fields, blastula, Anura KOSTELLOW MORRILL — early embryo, Rodentia NEWMAN — , — gastrula, Teleostei BRUMMETT — , heart primordium, Aves DeHAAN — , marginal tissue, microcinematography, 'yi^yes SCHLESINGER — , organ primordia, Aves STEDING — , palate closure, Rodentia POLLARD — , role of cell surface properties, ]^yes COLLINS — sternum, Aves, Rodentia JACCARINI — , Teleostei BALLARD — , time-lapse microcinematography, Aves SPRATT — , ultrastructure, histochemistry, Anura BAKER Phasmidoptera «7cd7 polypeptides, conformational changes WERZ postnatal, role of posture, Rodentia FANGHaNEL ^ SCHUMACHER potencies of somatic cells, Porifera NIKITIN relation with integrity of spinal cord, Aves ARC AN protein synthesis, tracer studies, Echinoidea GEZELIUS role of cell movements & mesoglea, Hydrozoa SHOSTAK cellular deaths, Aves SAUNDERS cyclic nucleotides KONIJN individual cell types, Hydroidea DIEHL tissue growth, Anura, Aves WURMBACH somites, Anura BURGESS synthesis & role of mesoglea & perisarc, Hydroidea ^RJ^tS^^ tubular glands, oviduct, Aves WRENN MORPHOGENETIC FIELDS see Embryology (experimental) MORTALITY (embryonic, fetal) see Pathology MORULA see Cleavage MOSAICISM (genetical) see Genetics MOTILITY see Behaviour; Cell(s)-movement; Tissue culture MOTOR END PLATES see Nerve(s) MOULT(ING) cycle, nucleic acid metabolism, Crustacea SKINNER — , ultrastructure & physiology, Lepidoptera LOCKE effect of X-irradiation, Lepidoptera COULON embryonic mechanism, Dictyoptera BULLIERE endocrinolgy, Cladocera ZAFFAGNINI Insecta POHLEY metabolism. Insecta MOREAU Reptilia LYNN MOUTH see also Pharynx CUSIMANO causal study, Anura cleft palate & lip, Artiodactyla, Carnivora SHUPE maxillary bud, chitinogenic cell, Heteroptera PINET oro-facial malformations caused by pyri- methamine. Mammalia COLEMAN palate, cleft, experimental study, Lago- morpha, Rodentia WALKER — , closure, morphogenetic movements, Rodentia POLLARD — closure, role of tongue. Mammalia ROSS — , normal & cleft, histochemisuy, in vitro. Homo, Rodentia POURTOIS — , , role of sulfated mucopoly- saccharides, tracer study, Rodentia COLEMAN — , , uptake of tritiated thymidine, Rodentia COLEMAN relation epiglottis-soft palate. Homo GITLIN stylet, maxillary, fine structure, histo- chemistry, Heteroptera PINET styligenic organ, cell potencies according to site, Heteroptera PINET MUCOPOLYSACCHARIDES see Carbohydrate(s) MULLERIAN DUCT epithelium, antigens FORSBERG regression, organ culture, Aves LUTZ sexual differentiation, effect of chorionic gonadotropin, Aves PREDA MULTIPLE BIRTHS see Twins MUSCLE(S) actin & myosin synthesis in somite, Aves ALLEN anal sphincter, Homo JIT autoradiography, immunology, Aves LANGMAN Aves OKAZAKI cells, change from proliferation to enlargement, biochemistry, Aves MIZUNO — , dissociated myocardium MUIR chemistry LOVE complexus, effect of hypophysectomy, Aves WATTERSON cytocliimeric, from disaggregated embryonic cells, different tissues & classes, Aves, Rodentia MASLOW cytodifferentiation, clonal cell culture, Aves KONIGSBERG — , role of products of fibroblast bio- synthesis, Aves KONIGSBERG cytological changes after injury, Urodela DECK degeneration, electron microscopy, Anura MUNTZ differentiation, biochemistry, Anura, Aves HAYASHI HIRABAYASHI effect of giowth regulating substances, Aves HIKAMI paralysis & amniotic pressure, Aves SULLIVAN electrophysiology, Rodentia, Urodela GARGOUIL endocrine regulation of metabolism, Aves LOVE flight, mitochondria, biochemistry, election microscopy, Hymenoptera HEROLD — , morphology & enzymology, Insecta BROSEMER head, Ophidia SMIT histochemistry, Anura, Rodentia MESSAGE informational macromolecules, Echinodermata, Vertebrata WILDE in vitro, influence of electrophoretic fractions of specific primordia & cells, Urodela WILDE Mammalia OKAZAKI STERBA mitochondria, Artiodactyla LEESON motor end plates, Aves DRACHM AN myoblast, cytochemistry, electron micro- scopy, Urodela FINNEGAN — , differentiation & movement, Cestodes OGREN — fusion, normal & dystrophic, ribosomes & nucleolus, Aves, Homo, Rodentia PARSONS 276 — , normal & dystrophic, RNA, Aves, Homo, Rodentia JANS ROSS — , relation between myofilaments & ribo^omes, Aves, Homo, Rodentia LARSON myofibrils & sarcotubules, Diptera BEINBRECH myogenesis. Amphibia KIELBOWNA — , genetic control, Diptera WRIGHT — in vitro, amitosis, origin of multinuclcarity. Ares, Rodentia PUZA , Aves, Rodentia LEVIS , RNA autoradiograpiiy, Aves, Rodentia GAYER , time-lapse cinematography, Aves, Rodentia GAYER myogenic cells, normal & dystrophic, behaviour & differentiation, Rodentia JONES myotube formation in vitro, Aves KYONO NISHIZU neuro-muscular interactions, Rodentia FAMBROUGH nucleolus, behaviour in vitro, Aves, Rodentia GAYER HROCH PUZA prenatal development, Homo CIHAK DYLEVSKY promuscle cells, regenerating tail, differentiation in vitro, Lacertilia SIMPSON reinnervation, Teleostei MARK sarcomere organization, ultrastructure, Aves, Artiodactyla ALLEN skeletal, differentiation in vitro, bio- chemistry, Aves COLEMAN — , — , role of DNA synthesis & cell division, Aves STOCKDALE — , fibres, postnatal, Rodentia GAUTHIER PADYKULA TAYLOR — , neuromuscular junctions, Rodentia GAUTHIER PADYKULA TAYLOR striated, cytogenesis, tracer studies, Rodentia TOTO — , differentiation, causal biochemistry, Urodela WILDE — , electron microscopy, Aves, gastropoda, Orthoptera, Teleostei TAHMISIAN — , oesophagus. Homo JIT — , origin & histogenesis, Vertebrata BORISOV structure, comparative study, Aniira MUNTZ — , Homo, Rodentia PUZANOVA trophic influence of motor neurons, Aves, Mammalia DRACHMAN umbilical sphincter, Lagomorpha TA VERNE MUTAGENIC AGENTS effect on karyotype, Aves, Rodentia SRB nucleic acid analogues, Diptera RIZKI MUTANT(S) see also Gene(s); Phenocopies abnormal tissues, electron microscopy, Rodentia JOHNSON ac'ac, histology, biochemistry, Lago- morpha SHEPARD affecting endocrine & reproductive physiology, Diptera DOANE — eye, developmental genetics, Rodentia ZWAAN & lens, Rodentia CAMPBELL CLAYTON & skeleton, Rodentia KONYUKHOV SAZHINA — fat cells, electron microscopy, Diptera RIZKI — imaginal disc development, Diptera GEHRING — limbs, tail & neural tube, Rodentia CENTER — lipid & carbohydrate metabolism, Diptera DOANE — spermatogenesis, Rodentia BRYAN Bar, eye differentiation, Diptera KAJI cellular adhesion, movement & degeneration, Aves EDE creeper, chondrogenesis, genetic control, Aves ELMER — , RNA metabolism, Aves EVANS Dw, Da, ac, skeletal growth, Lagomorpha SAWIN effect of environmental factors & selection, Diptera SCHARLOO electron microscopy, Diptera PERRY WADDINGTON eye colour, maternal effect, Polychaeta FISCHER female-sterile, ovary, phenogenetics, Diptera BENDER genetics, gynogenesis, Anura RICHARDS hairless, maternal effect, Rodentia McLAREN homeotic, affecting the eye imaginal discs, in vivo culture, Diptera OUWENEEL — , differentiation in imaginal discs, Diptera FABER hr. Re, sa, developmental genetics of hair growth phases, Rodentia CHASE lethal, Aves EDE TAYLOR — , chromosome puffs, Diptera BREUGEL — , developmental abnormalities, Diptera SCRIBA — , embryonic, Diptera FULLILOVE — , — , temperature sensitive, Diptera WRIGHT Lp/Lp, in vitro culture, tracer studies, Rodentia STEIN neuromuscular, Rodentia McNUTT nucleic acids, Diptera KUBLI WEIDELI polydactylism, ectrodactylism. Amphibia ROSTAND — , pattern formation, phenocopy & inter- action with TEM, Rodentia KOCHER relation to embryonic fluids, Rodentia JOHNSON scalloping, wing development, Diptera SANTAMARIA semi-lethal recessive, ac, Urodela BEETSCHEN JAYLET tail-labyrinthine, Rodentia McNUTT talpid2, morphology, Aves MOTTET torpid, Rodentia DWORNIK ultrastructure of embryo, Diptera MAHOWALD W-series, hematology of congenital anemia, Rodentia SELLER white-mottled, cytological differentiation, Diptera BREUGEL ysc8, imaginal disc, clonal analysis, Diptera GSELL MUTATION see Genetics MYOBLASTS see Muscle(s) MYOGENESIS see Muscle (s) MYOSIN see Muscle(s) MYOTOME see Somite(s) NASAL ORGAN see Olfactory organ NEMATOCYSTS NEOPLASIA see Tumours NEOTENY see Metamorphosis NERVE(S) (& innervation) carotid body. Homo, Lagomorpha KIMMEL facial, Homo GASSER fibres from spinal ganglion in vitro, behaviour & interaction, Aves DUNN heart, choUnesterase & mono-amine. Homo, Mammalia NAVARATNAM kidney. Homo, Lagomorpha KIMMEL limb regeneration, Anura NIAZI motor end plates, Aves DRACHMAN , diaphragm, Rodentia BOSCHWITZ — , regeneration, Teleostei MARK — , trophic influence in muscle development, Aves, Mammalia DRACHMAN neuro-muscular interactions, Rodentia FAMBROUGH junctions, Rodentia GAUTHIER PADYKULA TAYLOR neuropharmacology, Aves DRACHMAN optic, functional regeneration, Anura GAZE — , myelination, Carnivora BLUNT — , neuroglia, Carnivora BLUNT — , rudiment transplantation between varieties with & without eyes, Teleostei BRICK SCHMATOLLA 277 NERVE(S) (contd.) ^^ ^^ peripheral, regeneration, Aves, Carnnora ERHART pharynx. Homo, Lagomorpha KIMMEL regeneration, olfactory system, electro- physiology, Teleostei WESTERMAN role in limb regeneration, Urodela THORNTON proliferation pattern, limb regeneration blastema, Urodela HEARSON sensory, integration with end organ, Anura STEINBERG splanchnic. Homo x.TTxrf'y structure, comparative study, Anura MUNIZ. terminals, motor & sensory. Homo DAIKOKU trigeminal. Primates GASSER — . regeneration of motor root, early stages, Aves STRAY monoamine, Aves HAKANSSON NORD T6R6K FIORONl JOSHI NERVE CELLS anterior horn, influence of periphery, Aves brain & ganglia, culture, growth & differentiation, Dictyoptera t t i differentiation, critical periods, Rodentia LaVELLE — , maturation, Rodentia LaVELLE DNA synthesis, cytoplasmic control, Rodentia JACOBSON electrical activity, relation with EEG, ^vej CORNER eye stalk, regeneration, Crustacea VERNET fibres, effect of polarity. Amphibia HIBBARD growth. Amphibia FRATELLO — & differentiation, Vertebrata BAFFONI histochemistry, Vertebrata AZOUBEL CRUZ histogenesis, Rodentia SMART maturation, lipid & phospholipid, Rodentia LaVELLE Mauthner cell, relation to spinal cord regeneration, Urodela MOULTON microtubules, biochemistry FRIEDKIN neuroblasts grafted in adult spinal cord, „ccv Rodentia BOSSY — . spinal ganglion, electron microscopy, '^yes PANNESE Nissl bodies, Aves, Lagomorpha DREYF.R nuclear size, Rodentia CRUZ protein synthesis & utilisation, Aves O'BRIEN Rohon-Beard cells. Amphibia MARINI spinal ganglia, Rodentia YAMADORI synaptic complexes, retina, Carnivora, Rodentia ^^ v unipolar, spinal ganglion in vitro, Aves DUBEY NERVOUS SYSTEM see also specific components '4"«'-a ^KHAN Ayes HAMBURGER behavioural nerve networks, development & regeneration, Vertebrata SPERRY biochemistry, myelinization WENDER catecholamines & their receptors, Aves, Rodentia MANUKHIN cell physiology, Rodentia, Urodela KOROTCHKIN Cetacea ^'^-^^^^ Cheleutoptera LOUVET cochlear input, regulation, Aves, Rodentia BUNO WILSON Collembola TYSZKIEWICZ cytochemical differentiation, Rodentia LaVELLE cytochemistry, Rodentia, Urodela KOROTCHKIN effect of asphyxia WENDER drugs, Urodela LaVELLE ionizing radiation MULAREK WENDER magnetic field, Aves VENEZIANO electrophysiology. Mammalia CERBELLE — , Marsupialia BODEMER epithelioneural bodies, cytology & histo- chemistry, Aves DREYER experimental embryology, Diptera CHIARODO , electron microscopy, Aves ADLER — morphology, Rodentia, Urodela KOROTCHKIN genetically deficient embryos, Diptera POULSON glycogen pattern, Amphibia MARINI histoenzymatic architectonics WENDER histones, Vertebrata KORNGUTH innervation, teeth, Homo FALIN lactate dehydrogenase isozymes, Teleostei WHITT malformations, Rodentia GIROUD microsystems in vitro, Aves STEFANELLI morphogenetic role, Turbellaria morphology & electron microscopy. Cephalopoda nerve fibres, regeneration, larval, Urodela BAFFONI — growth factor, mode of action LEVI neurotransmitters, role in early embryogenesis, Anura, Echinoidea BUZNIKOV MARKOVA peripheral, cellular growth & mitosis. Amphibia ^^"^^^V^ — , developmental mechanism, Urodela OHASHI — , in fetus. Homo GAMBLE phospholipids, Teleostei OPPENHEIMER reflex arc, origin. Mammalia CERBELLE regeneration, postmetamorphic, Anura BAFFONI relation with behaviour, Aves OPPENHEIM . eye, Lepidoptera WOLSKY synapse, proteins, Vertebrata KORNGUTH teratogenesis, Rodentia MONIE SCHLiiTER tissue differentiation in vitro VARON Vertebrata MINELLI NEURAL CREST cells, culture method, Anura ANDREW GABIE determination, Aves KOECKE differentiation, causal biochemistry, „^^^ Urodela WILDE — , suppression & stimulation, Aves, Rodentia KOLLAR head, derivatives, experimental embryology, Urodela ^ ^^^}^^lh homotransplantation, tolerance, Anura Y>iV,T7 in vitro, RNA & histones, Anura ANDREW GABIE localization, migration & differentiation, autoradiography, Aves ^^^Y/7;r„y^^, migration & differentiation, Aves WESTON morphogenetic capacities & differentiation, Urodela S?/i?^c organ culture, Urodela WlLun pigment cells, effect of amino acids, ^ ^,^^ »., in vitro, Aves ^^^ireS thyroxine, in vitro, Anura ANDREW ^ GABIE , staging, Anura ^^P?S^ GABIR pigmentation, Aves KOECKE removal, resulting in comb & beak „,t,t-xt.-c malformations. Aves Vr^T^^^py ultrastructure, Aves ^il.J^A'A^ _, in vitro, Aves ^''' WIREN NEURAL PLATE nTpS ^""^" '"""*°"' WOELLWARTH determination, Anura ROSSI prosencephalic part, differentiation ten- dencies, Urodela BOTERENBROOD ROSA BRaNDLE xenoplastic transplantation, effect on behaviour. Amphibia NEURAL TUBE see Central nervous system NEURONS see Nerve cells NEUROSECRETION different sexual developmental stages, Polychaeta "°^'^,'^2S cellular activity cycle, Orthoptera , 3^^i embryo, Oligochaeta, Turbellaria MIGLIORINI embryonic, Orthoptera VAN HORN epistellar body. Cephalopoda SACARRaO eye stalk, regeneration, Crustacea VERNET histology & histochemistry, Orthoptera EWEN morphological & physiological. Amphibia, _^ Crustacea, Pisces TTrvT-ri Oligochaeta LIOTI I relation with regeneration, Turbellaria, orici Oligochaeta ROSI role in development of androgenic gland, Crustacea PAYEN 278 regeneration & differentiation of genital apparatus, Trematoda, Turhellaria GRASSO , Hydroidea. Turbellaria LENIQUIZ sexual differentiation, Crustacea CHARNIAUX subcommissural organ, structure & function. Homo, Mammalia LEONIENI Turbellaria LENDER LIOTTI Vertebrata WATERMAN NEURULA(TION) Anura KHAN early, Aves HERBERT electron microscopy, Urodela L6FBERG latency period after induction, Aves GALLERA mechanism, Urodela JACOBSON ultrastructure, Anura BAKER NITROGEN excretion, tadpole, effect of prolactin, Anura ARIMA metabolism, enzyme systems, Anura JANSSENS NORMAL TABLES see Embryology (general & descriptive) NOTOCHORD developmental changes, Rodentia JURAND NUCLEAR TRANSPLANTATION see Nucleus NUCLEIC ACID(S) see also specific nucleic acids; Nucleotides (& nucleosides) analogues, influence on development, Lepidoptera EICHER development & aging, Diptera SONDHI — , Anura DECROLY early development, Anostraca, Echinoidea HULTIN Echinoidea IVERSON SOFER effect on development & regeneration, Amphibia, Echinoidea WOLSKY endopolyploid nuclei, autoradiography, Diptera, Lepidoptera GILLOT fetal & postnatal development, Rodentia NAKAZAWA growth control, marginal tissue, Axes SCHLESINGER hybridization, Anura, Aves, Echino- dermata GIBSON interaction with proteins, early development, Echinoidea IMMERS ILmb buds, epidermal & mesodermal cells, Lacertilia RAYNAUD VASSE metabolic changes in primary induction, Urodela KAWAKAMI metabolism. Amphibia, Teleostei DUSPIVA — , Anura SALLACH — , biochemistry, autoradiography, Lepidoptera BERRY — , early stages. Gastropoda BIGGELAAR — , effect of nuclease inhibitors, Aves TEMPEL — , egg maturation. Amphibia HANOCQ — , — , Rodentia TSAFRIRI — , embryo, tracer studies, Echino- dermata YANAGISAWA — , endocrine regulation, muscle, Aves LOVE — in differentiation. Amphibia FAULHABER hybrids, Echinoidea, Anura HANOCQ — , larval, Trematoda GILBERTSON — , moult cycle, Crustacea SKINNER mutants, Diptera KUBLI WEIDELI oogenesis & early development, Amphibia NEDVIDEK VILIMKOVA oocytes, lampbrush stage, Anura DAVIDSON HOUGH parotid gland, Rodentia REDMAN quantitative cytochemistry, induction & differentiation, Vertebrata VAHS relation with nuclear transplantation. Amphibia NEDVIDEK SLADECEK role in differentiation. Amphibia DENIS structure & function SWIFT synthesis after cortical lesions, Anura BRACKET — , associated with neural & endo-mesodermal competence, Urodela SAAG — during development, Anura CASTON — , early stages, Rodentia MOLINARO — , effect of conditioned medium from dissociated morulae, Echinoidea BRACKET — , hormones, postembryonic, Dictyoptera, Diptera SKAAYA — , embryo, biochemistry, in vivo & in vitro, Echinoidea INFANTE — , eye lens in vivo & in vitro, Artiodactyla, Aves PAPACONSTANTINOU — , induced ectoderm, Urodela KOKONEN TOIVONEN — , larva, Diptera MATTINGLY — , neural retina, Aves SCHWARTZ — , oogenesis, autoradiography, Echinoidea BAL — , polytene chromosomes, normal & infected larvae, Diptera PAVAN — , prevention by prolactin of hormone- induced metamorphosis, Anura TATA — , queens & workers, Hymenoptera REMBOLD — , regulation in early stages, Anura REEDER template capacity during development, Anura DECROLY yolk & egg white, Aves NONAMI NUCLEO-CYTOPLASMIC RELATIONS Ciliata DE TERRA DNA synthesis, Aves, Rodentia JANDIERI TUMANISKVILI Echinoidea DENIS early development. Amphibia KAYAKAWA NAKAMURA , Anura BALLS MONNICKENDAM general WERZ oocyte, Teleostei MALONE oogenesis & early development. Amphibia MASUI protein synthesis, liver, Rodentia MALPOIX somatic cells SCHMIALEK tracer studies, Echinoidea GEZELIUS NUCLEOLUS see Nucleus NUCLEOTIDES (& nucleosides) acid-soluble, changes during development, Echinodermata YANAGISAWA , egg & sperm, Echinoidea ISONO action on embryo, Tunicata CUSIMANO AMP, cyclic, role in action of gonado- tropin, placenta. Homo CEDARD — , — , morphogenesis KONIJN central nervous system, adnexa & ganglia, Aves WENGER cyclic, role in morphogenesis KONIJN cytosine arabinoside, effect on cell development & proliferation, Rodentia BERTALANFFY effect on heterologous fibroblasts, Aves, Rodentia SANN egg white & yolk, Aves NONAMI intragenome sequence homology, relation to developmental patterns, Insccta, Mammalia, Tunicata LAIRD metabolism, enzymes, gene activation, Turbellaria COWARD nucleoside analogues, effect on cell differen- tiation in vitro, Aves COLEMAN pyridine, action in development & differentiation KAPLAN uridine, incorporation in fibroblasts, Aves SANN — & thymidine incorporation, germ cells, Aves CALLEBAUT NUCLEUS see also Chromosome(s); Nucleo-cytoplasmic relations chromatin & DNA, stage-specific, Anura ROLLINS degeneration, eye lens mathematics, Aves LEVER MODAK PERDUE UPPULURI developmental changes, Anura DiBERARDINO differentiation, Anura KING embryonic cells, radio-active labelling, Urodela CHIBON 279 NUCLEUS (contd.) endopoWploicI, nucleic acids, autoradio- graphy, Diptera, Lepidoptera GILLOT germ cell, composition, biochemistry & changes after fertilization, Echinoidea TERAYAMA germinal vesicle, juxta nucleolar granules, electron microscopy, Anura SALLES histones, embryo KISCHER in organism & in vitro KRANTZ nucleolar changes, lens regeneration, Urodela DUMONT nucleolus, biochemistry, Echinodermata VINCENT — , changes, cleavage. Gastropoda DAUWALDER — formation, eleocytes, Polychaeta SCHROEDER — , germinal vesicle, Orthoptera KUNZ — , myogenesis in vitro. Ares, Rodcntia GAYER HROCH PUZA — , oocyte through early gastrula, Anura VAN GANSEN — , oogenesis, Amphibia GALL — , — , cytometric, cytochemical & bio- chemical study, Polychaeta STAGNI — , relation to yolk formation, oocyte, Crinoidea, Teleostei ALBANESE — , role in differentiation of blastodermic vesicle, Homo, Rodentia MARTINEK — , virus induced tumour cells, Anura JACOB — , structure & cytochemistry, Echinodermata CANNATA oocyte, nucleolus, nucleoplasm, fine structure, RNA, DNA & protein metabolism, Amphibia MILLER polytene, RNA metabolism, Diptera EDSTROM sex chromatin, embryonic tissues, Rodentia AMANUMA size & DNA content, embryo, larva, adult & germ line, Ascidiae, Gastropoda BACCARINI REZENDE SCHREIBER , postembryonic organogenesis. Gastropoda FALLIERI , spermatogenesis, Anura LAVALLE , Teleostei SANT'ANA — , nerve cells, Rodentia CRUZ transplantation. Amphibia PICHERAL — Anura LEGNAME McKINNELL MARIANO — , chromosome replication in host, Amphibia CLIVE KING — , Coleoptera SCHNETTER — , differentiation, specific activities, Urodela SIGNORET — , film showing technique, Amphibia LUCEY — , haploid embryo cell lines, Anura FREED MEZGER — , interspecific. Amphibia ORTOLANI — , isogenic groups, morphology, bio- chemistry, histocompatibility, Anura McKINNELL VOLPE — , oogenesis, Amphibia, Chondrostei NIKITINA — , relation to antigenic development, Amphibia ROMANOVSKY SLADECEK — , nucleic acids. Amphibia NEDVIDEK SLADECEK uni- & multinucleolate oocytes, ribosomal gene amplification, Asteroidea, Echinoidea, Teleostei VINCENT NUTRITION (embryonic, larval, etc.) Aves FRITZ NABER biochemistry DALLMAN Chelonia FRITZ dietary changes, effect on developmental pace, parotid gland, Rodentia REDMAN effect on embryonic growth, Aves BETZ evolution, Arachnida WEYGOLDT excess, effects on early development, Aves GOLDIE Gastropoda FRETTER Mammalia BECK Marsupialia FRITZ maternal, effect on embryonic fat meta- bolism, Aves DONALDSON morphologj', Malacostraca FIORONI relation between mother & embryo, Rodentia ZIMMERMANN requirements for early morphogenesis & growth, Aves SPRATT starvation, effect on larva, Amphibia JUSZCZYK yolk, albumine & food-eggs, morphology, Gastropoda FIORONI OESOPHAGUS Anura MICHAEL striated muscle, Homo JIT OESTROUS CYCLE see Reproduction OLFACTORY ORGAN experimental morphology, Teleostei BERTMAR induction, Urodela JACOBSON nerve fibre regeneration, electrophysiology, Teleostei WESTERMAN placode development. Mammalia FILOGAMO OOCYTE see Egg(s) see also Gamete(s) OOGENESIS see also Gametes Acarina AESCHLIMANN GEIGY PIJNACKER Araneida SEITZ Artiodactyla, Rodentia OHNO autoradiography, ovarioles, Coleoptera ULLMANN basic proteins, autoradiography, electron microscopy, Echinoidea SANCHEZ , Echinoidea BaCKSTRoM biochemical mechanisms, Anura FRENCKELL centrioles, migration, Diptera MAHOWALD constant-estrus, Rodentia SEGAL WITSCHI correlation of meiosis & vitellogenesis, Teleostei SAKUN cytochemistry & autoradiography, Coleoptera URBANI , Coleoptera, Diptera, Mollusca RUSSO — , electron microscopy, Cladocera ZAFFAGNINI — . , Hydroidea STAGNI — , , Turbellaria GREMIGNI — , Orthoptera UBBELS Diptera ALVES MATUSZEWSKI DNA, extrachromosonial, origin & function, Orthoptera CAVE — synthesis, Amphibia BALTUS HANOCQ , Anura FICQ effect of hormones, ovarium & Bidder's organ, Anura GARDENGHI ZACCANTI physical factors, Orthoptera TCHELEBI X-rays, Rodentia SMIT TRAMPUSCH egg shell formation, role of vitelline cells, histochemistry, biochemisUy, Plathel- minthes GERZELI electron microscopy. Amphibia HUMEAU , Diptera MAHOWALD , Echinoidea ENDO , Homo STEGNER , Homo, Mammalia, Urodela WISCHNITZER & biochemistry, Echinoidea TSUKAHARA , Sipunculida N0RREVANG , Teleostei G6TTING effects of gonadotiopins, Teleostei SAKUN fertilizin synthesis, hormonal control, Polychaeta SCHROEDER follicle cells, nuclei, growth regulation, Diptera MATUSZEWSKI Gastropoda VIANEY gene amplification, coding for RNA, Anura GALL genetic & cytological aspects, Diptera BROWN giant animals, Phasmidoptera PFLUGFELDER histochemistry, Echinoidea KOBAYASHI histology, histochemistry, Sipun- culida N0RREVANG histo-physiology, electron microscopy, Teleostei YAMAMOTO information transfer from follicle to oocyte. Gastropoda RAVEN 280 in vitro, Coleoptera ULLMANN in vivo. Rodentia COWARD lampbrush stage, nucleic acids, Anura DAVIDSON HOUGH Lemuroidea AN AND macromolecules, transfer from follicle cells to oocyte, Aves PRESS membrane system, changes, Echiuoidea BAL meiosis, spindle, thermodynamics & protein crystallization, Asteroidea, Polychaeta SATO metabolism, autoradiography, Asteroidea, Amphibia FICQ morphogenelic information transfer, Diptera FULLILOVE morphology & physiology, Homoptera MOCHIDA nuclear transplantation, Amphibia, Chondrostei NIKITINA nucleic acid synthesis, autoradiography, Echinoidea BAL — acids & subcellular particles. Amphibia NEDVIDEK VILTMKOVA nucleo-cytoplasmic relations, Amphibia MASUI nucleolus, cytometric, cytochemical & bio- chemical study, Polychaeta STAGNI oogonia, ultrastructure & metabolism, Rodentia lOANNOU oosome origin, Diptera MATUSZEWSKI Phasmidoptera PIJNACKFR Polychaeta NOYES Primates BAKER protein synthesis, Diptera BIER , Echiuroidea GOULD & transport, effect of hormones Orthoptera WYATT relation to hormones, Homo, Rodentia WITSCHI reserve substances, radio-isotope study, Insecta ENGELS ribosomal gene amplification, uni- & multinucleolate forms, Asteroidea, Echinoidea, Teleostei VINCENT RNA & DNA synthesis. Amphibia GALL synthesis, autoradiography, electron microscopy, Echinoidea SANCHEZ role of neural complex, Ascidiae GEORGES test cells, Timicata MANSUETO ultrastructural changes, Echiuroidea, Lamellibranchia, Sipunculoidea SAWADA ultrastructure & autoradiography, Polychaeta DHAINAUT — , Diptera MAHOWALD — , Invertebrata MANCUSO vitellogenesis, cytology, Anura DUMONT — , Teleostei MALONE OOPLASMIC SEGREGATION see Egg(s) ORGAN CULTURE adrenal cortex, Rodentia ROOS — gland, Aves MASTROLIA adrenals, endocrine activity, Vertehrata ZAAIJER application to teratogenesis, Rodentia MONIE blood islands, Aves MANELLI MASTROLIA bone, Aves, Mammalia GAILLARD bones, achondroplasia. Homo, Lago- morpha SHEPARD brain, Aves, Mammalia DOUSOVA cancer, nutritional aspects MASON central nervous system, Aves JAMES combinations of organs, Rodentia CRACIUN PREDA digestive tract, Aves SIGOT effect of hormones, Anura TATA embryonic organs under pressure, Vertebrata STEPHENSON endocrine control of differentiation, Lepidoptera BERRY eye lens, molecular events, Artiodactyla, Aves PAPACONSTANTINOU — • — , morphogenesis & protein synthesis, control, Aves BRAVERMAN — & skeletal abnormalities, Rodentia KONYUKHOV fallopian tubes, ovaries. Mammalia BIGGERS genital tract, Aves LUTZ , Rodentia RAPOLA gonads, action of chemicals SALZGEBER — , differentiation & intersexuality, Aves STENGER WOLFF — , endocrine activity, Vertebrata ZAAIJER — , larval & adult, Anura GARDENGHI ZACCANTI — , — , Coleoptera LENDER — , — & metamorphosing, Anura FOOTE — of two classes, asscociation, Aves, Mammalia SALZGEBER — , sex reversal by Leydig cell tumours, Rodentia POURREAU — , steroid & sterol synthesis, effect of HCG, A ves CEDARD GUICHARD heart, Anura BRIDE GOMOT — development, induction, Vrodela FULLILOVE — primordium, effect of stimulants & depressants, Aves BUTROS hypophysis, adrenals & gonads, developmental correlations, Aves MANELLI imaginal discs, Diptera, Lepidoptera OBERLANDER interaction between hypophysis, pineal gland & gonads, Rodentia LOMBARD kidney, effect of Wolffian duct on mesenchyme, Aves MARTIN — , tubulogenesis, electron microscopy, Rodentia WARTIOVAARA larval organs, Insecta LENDER Lepidoptera PRUDHOMME limb-bone rudiments, response to thyroid hormone, Aves LAWSON — bud, Aves PINOT , gills, neural crest, Urodela WILDE — regeneration, cuticle deposition, Dictyoptera LEOPOLD — , Vertebrata ZAAIJER lung, dissociation & reassociation, Aves DAMERON MARIN lymphoid organs COMOGLIO mammary gland, effect of hormones, Rodentia RIVERA , Lagomorpha, Rodentia GOMOT PROPPER , tissue interaction, DNA synthesis, Rodentia ARMSTRONG mesoderm, axial, Urodela FINNEGAN mesonephros, Aves AMADO — components, endocrine & neural control, Rodentia ROOS metaboUsm LE DOUARIN neural crest, effect of amino acids, Aves FINNEGAN WIREN , ultrastructure, Aves FINNEGAN WIREN — tube, effect of adjacent tissues & other factors, Aves LYSER osteogenesis, effect of tetracycline, Rodentia WARTIOVAARA ovary, Coleoptera ULLMANN — , protein synthesis, Anura, Rodentia FORD palate, normal & cleft, histochemistry. Homo, Rodentia POURTOIS pancreas endoderm, reassociated with heterologous mesenchyme, Aves DIETERLEN — & salivary gland, inductive interactions, synthesis of macromolecules, Rodentia BERNFIELD parotid gland, morphogenesis & functional development, Rodentia LAWSON pineal organ, Aves ^^-?uv primordia. Cephalopoda MARTHY — of genital tract, Lacertilia, Ophidia RAYNAUD prostate, effect of testicular interstitial cell tumours, Rodentia POURREAU regenerating organs, Turbellaria ZILLER regeneration blastema, Urodela MARIN reproductive tract, endocrinology, Aves, Mammalia ZAAIJER retina, sensory cells & synapses, Carnivora, Rodentia HILD Rodentia BORGHESE salivary gland & pancreas, extracellular materials in morphogenesis, Rodentia BERNFIELD skeleton, morphology & biochemistry. Mammalia SCHRYVER skin derivatives, inductive interactions, A ves, Rodentia KOLLAR spinal ganglion, Aves DUBEY KADASNE 281 ORGAN CULTURE (contd.) , nerve fibres, behaviour & inter- action, Aves DUNN sub-maxillary gland primordium, Rodentia RAYNAUD tail, effects of thyroxine, Anura HICKEY WEBER — , Urodela FORD teeth, inductive interactions, Rodentia KOLLAR testicular interstitial cell tumours, Rodentia POURREAU thymus COMOGLIO — , Aves FOOTE thyroid gland. Homo SHEPARD umbilical vesicle, Rodentia LE GOASCOGNE ORGANIZATION (pattern formation) see also Induction autonomous, neural plate. Amphibia WOELLWARTH biological patterns, computer simulation COWE WADDINGTON ceUular basis, Hydroidea WOLPERT colony pattern & growth, systems analysis & computer simulation, Hydroidea BRAVERMAN cutaneous nerve pattern, effect of X-rays, Aves MAUGER embryonic tissues, Aves DeHAAN feather patterns, Aves SENGEL genetics, Diptera KROEGER STERN TOKUNAGA head, bilateral symmetry. Gastropoda VERDONK Hydroidea WEBSTER imaginal discs, Diptera URSPRUNG in artificially activated ectoderm, Urodela NIEUWKOOP polarized regulation of linear pattern, Hydrozoa HICKLIN population patterns, Ciliata, Euglen- ophyceae SPRATT primary patterns, diffusion-reaction mechanisms, Diptera SONDHI prosencephalic part of neural plate, differentiation tendencies, Urodela BOTERENBROOD ROSA regional determination, pterylae & apteria, Aves KIENY — , transplanted limb regeneration blastemas, Urodela FABER rhombencephalic & anterior spinal cord region, Aves WIERTZ ORGANIZER see Induction ORGANOGENESIS see also Organ culture biochemistry Echinoidea effect of antimetabolites, Rodentia KISCHER D'ASARO DEGENHARDT KLEINEBRECHT isogenic subcellular tissue fractions, Rodentia STERN — — TEM, Rodentia KOCHER X-irradiation, Rodentia DEGENHARDT endodermal organs MIKAMI growth control. Mammalia ARGYRIS Homo MENKES homologous inhibition by tissue extracts, Aves THOMPSON in vitro, Dictyoptera BULLIERE Isopoda STR6MBERG Lagomorpha GOTTSCHEWSKI ZIMMERMANN Mollusca D'ASARO organ size, control, Aves HALL postnatal, role of posture, Rodentia FANGHaNEL SCHUMACHER proteins, soluble, Rodentia SERMAN SKREB Rodentia GOTTSCHEWSKI ZIMMERMANN role of enzyme induction in growth control, Rodentia ARGYRIS stimulation by tumours, Mammalia ARGYRIS OSSIFICATION see Skeleton OSTEOGENESIS see Skeleton OVARY see also Gonad(s) cell dynamics & function, Rodentia PETERS comparative histology, Dermoptera, Primates DUKE effect of maternal irradiation, Rodentia PETERS female-sterile mutants, phenogenetics, Diptera BENDER follicle atresia, reeulation, Chondrostei, Teleostei FALEEVA — development, role of pituitary gonado- tropins, Artiodactyla, Rodentia ROBERTSON — growth, effect of testosterone & gestagen, Rodentia N0RBAEK PEDERSEN follicular fluid. Homo KRAICER Mammalia HADJUSKI maturation, effect of hormones, Diptera ADAMS mesonephric tumours. Homo SZAMBORSKI organ culture. Mammalia BIGGERS origin of asymmetry, blastoderm in vitro, Aves LEPORI physiology, Hemiptera ESCHENBERG protein synthesis in vitro, Anura, Rodentia FORD role of hormones in development, Rodentia PETERS secretions, Homo, Rodentia STERN self-differentiation, Crustacea BERREUR CHARNIAUX FRIED transplantation, Diptera HALFER unusual organelles, Aves PRESS OVIDUCT cell types, ultrastructural cytochemistry, Amphibia BERTOLINI descriptive & experimental embryology, Anura GIRARD effect of hormones, Aves SCHIMKE epithelium, electron microscopy & cytochemistry, Carnivora, Homo, Rodentia JIRSOVA histochemistry, Homo THIERY organ culture. Mammalia BIGGERS ovalbumin synthesis, induction by steroids, Aves PALMITER SCHIMKE relation with oocyte, Amphibia HUMPHRIES secretion of fertilization factor, Anura BUDEGUER secretions, after ovariectomy & hormone injection, Lagomorpha HAMNER — , effect on sperm metabolism, fertilizing ability & blastocyst development, Lagomorpha HAMNER — , fluorescence microscopy, Anura SHAVER — , Homo, Rodentia STERN — , Mammalia ECKSTEIN tubular gland morphogenesis, Aves WRENN oviPosmoN see Egg(s) see also Reproduction (sexual) OVULATION see Egg(s) OVULE see Plant embryology OXYGEN effect on hydrocephalus, Rodentia CHAMBERLAIN pressure, effect on egg & larva, Teleostei BRAUM — increase, effect on embryonic blood composition, Lagomorpha GROTE relation with DNA content, fibroblast, Aves MUSY toxic effect on blood islands & cardio- vascular system, Aves KELSO OXYGEN CONSUMPTION see Respiration PALATE see Mouth PANCREAS DNA synthesis & differentiation in vitro, Rodentia BERNFIELD electron microscopy, Rodentia PERRIER endocrine cells, Aves DRUKKER 282 — function in fetus, Rodentia FELIX JACQUOT SUTTER — , pathology, Aves HUNT endoderm in vitro, reassociated with hetero- logous mesenchyme, enzymes, Axes DIETERLEN epithelio-mesenchymal relationships, Vertcbrata GROBSTEIN exocrine cells, induction & differentiation, Rodentia WESSELLS functional development, fine structure, Aves DOSSEL growth & differentiation, Aves LAWRENCE inductive interactions in vitro, synthesis of macromolecules, Rodentia BERNFIELD insular tissue, electron microscopy, Rodentia DE HOYOS insulin, Aves, Rodentia COALSON morphogenesis in vitro, extracellular materials, Rodentia BERNFIELD ultrastructure, metamorphosis, Anura BEAUMONT PARABIOSIS blood cell chimerism, Anura VOLPE PARATHYROID GLAND seasonal changes, Anura Urodela PARTHENOGENESIS Acari activation, Echinoidea aged eggs, Tunicata artificial, Echinoidea — , Lepidoptera chromosomal regulation by cold. Amphibia cytology, Turbellaria embryogenesis, Cladocera BOSCHWITZ KOECKE PIJNACKER RUNNSTR6M FARINELLA ISHIKAWA SUGIYAMA ASTAUROV ROSTAND BENAZZI BETTANIN DELLA GROCE paedogenesis, in vivo & in vitro, Diptera WENT — , morphology, physiology & cytology, Diptera CAMENZIND Phasmidoptera PIJNACKER protein synthesis, Diptera BIER pseudogamy, Turbellaria BENAZZI PATHOLOGY (developmental) see also Anomalies; Bacteria; Malformations; Teratogenesis; Virus(es) abortions, cytogenetics. Homo KAJII SANDAHL — , spontaneous & induced, karyotype. Homo MAKINO — , — , karyotype, Homo SASAKI — , — , — , isozymes. Homo PAWLOWITZKI action of blastotoxic chemicals, Vertebrata SEGAL anatomy, Homo MIKAMO atrophy of embryo. Homo PASSAPONTI Aves ROMANOFF bacterial infection, role of placenta & fetal membranes, Rodentia FEDINEC caused by medicinal plants, Lagomorpha, Rodentia PERSAUD cell physiological mechanisms, Amphibia DUSPIVA chromosomes, fetus, Homo MIKAMO — , sex, newborns. Homo MIKAMO developmental systems SHANKLIN early embryonic mortality, influence of hormone imbalance, Artiodactyla TORRES effect of anti-kidney serum, immuno- fluorescence, Rodentia GEBHARDT chemicals, Rodentia HOSHINO KAMEYAMA embryotoxic agents on blastocyst, Lagomorpha HAY environmental factors, Teleostei PETERS excess nutrients, Aves GOLDIE reduced atmospheric pressure, Rodentia KAMEYAMA embryo resorption, Rodentia KLEINEBRECHT embryonic, Aves SAN DOR — death due to altered sperm viability, Artiodactyla, Lagomorpha, Rodentia ULBERG , radiation-induced, Hymenoptera AMY — , Homo BERNDORFER experimental diabetes. Mammalia MERCIER TUCHMANN extra-embryonic fluids & plasma, Aves ABRAMOVICI 5-fluoro-2-deoxy-cytidine, effect on early organ primordia, Rodentia DEGENHARDT heart, bone, Artiodactyla NIE hemolytic disease, immunological factors, Primates, Rodentia VOLKOVA Homo BAGINSKI SINGH TESTA hypoxia, intra-uterine, chemistry of blood. Homo THIERY infections of fetus & placenta. Homo FLAMM inherited abnormalities, prevention by drugs, Rodentia KONYUKHOV karyotype. Homo MAKINO melanotic embryo. Homo BOSSY mesonephric tumours of uterus & ovary, Homo SZAMBORSKI mortality, embryonic, relation with res- piration of egg, Artiodactyla TORRES necrotic areas. Homo ILIES nervous system, fetal irradiation. Mammalia RUGH neuroglia, postnatal injury, Carnivora FLEISCHHAUER neuromuscular mutant, Rodentia McNUTT octosporeosis, Diptera KRAMER pancreas, endocrine, Aves HUNT placenta, histochemistry. Homo IVEMARK prenatal, Aves MENKES — mortality, Artiodactyla BRADEN Rodentia MOSER TORO WAELSCH spinal cord, glucose-6-phosphate dehydro- genase, effect of maternal hyper- adrenocorticalism, Rodentia HOAR spirochaets, transmission via ovary to offspring, Acarina AESCHLIMANN GEIGY testis, spermatogonia! deficiency, Klinefelter syndrome. Homo MIKAMO toxemia, placental vessels. Homo VARMA uterine mucosa, stroma. Homo SZAMBORSKI virus-induced abnormalities. Homo KOSKIMIES SAXEN — infection of blastocyst, Lagomorpha FLAMM X-irradiation, effect on early organ primordia, Rodentia DEGENHARDT PATTERN FORMATION see Organization PELVIC GIRDLE see Skeleton PEPTIDES see Proteins PERITONEUM see Body cavities PERIVITELLINE FLUID see Egg(s) PERMEABILITY osmoregulation, Anura — , Anura, Urodela PHARMACOLOGY see Drug(s) PHARYNX see also Branchial region; Mouth mechanism of formation, Turbellaria KIDO regeneration, influence of tissue & organ extracts, Turbellaria ZILLER PHENOCOPIES Aves LANDAUER chemical, Diptera TAKAYA heat shock, pupal stage, action of modifiers, Diptera MOHLER Polydactyly, TEM treatment, Rodentia KOCHER rumpless, histology & factors involved, Aves GOLDIE LOEFFLER L0VTRUP HAGLUND 283 PHOSPHORUS PHYSICAL FACTORS see specific physical agents; Biophysics PHYSIOLOGY (developmental) see Embryology (experimental); Embryology (physiological) see also Development PIGMENT(ATION) see also Chromatophore(s); Melanophore(s); Neural crest carotenoids, reproductive cycle, Crustacea HORN coloiu- pattern, Anura LA SPINA development & endocrinology, Amphibia BAGNARA eye, biochemistry, genetic control, Lepidoptera MUTH genetics, Rodentia FOSTER granules, morphology & biochemistry, Teleostei MATSUMOTO iris, depigmentation control, Urodela REESE melanin formation, Aves KOECKE melanogenesis, Anura LYNN morphology, chemistry, Pisces MORI neural crest, Aves KOECKE pattern, genetic control, Urodela BRICK regenerating appendages, Crustacea RANGA Rodentia KOROTCHKIN role of pteridines, Teleostei MATSUMOTO role of pterin derivatives. Amphibia OBIKA Urodela KOROTCHKIN PINEAL ORGAN Amira AOTO Aves AMONS culture, Aves AMONS development & function, comparative study, Vertebrata OKSCHE electron microscopy, Aves, Mammalia, Re pt ilia COLLIN enzymes, Aves THILLARD experimental morphology, Bovidae VENZKE extirpation, effect on postembryonic development, Teleostei PFLUGFELDER funtion & structure, Aves SPIROFF interaction with hypophysis & gonads, in vitro, Rodentia LOMBARD morphogenesis & physiology, Aves VENZKE ultrastructure, Carnivora, Primates WARTENBERG PITUITARY see Hypophysis PLACENTA(TION) see also Blastocyst; Embryo-maternal relation- ships; Pregnancy anatomy & pathology. Homo IVEMARK STRATFORD autoradiography & histochemistry. Mammalia RITSCHARD blood vessels, relation to physiological exchange, Artiodactyla, Perissodact)>Ui STEVEN carbohydrate metabolism. Mammalia WALKER Cetacea HARRISON circulation. Homo, Primates MARTIN PANIGEL comparative histophysiology, protein transfer. Mammalia ANDERSON — study, Mammalia RAZEK STRAUSS control by hormones, in vitro, Homo BAKER cytochemistry, Rodentia BULMER decidual reaction, ultrastructure. Mammalia SANANES decidualization, (pseudo)pregnancy, Carnivora, Rodentia ORSINI — , Rodentia DE FEO development & blood flow. Primates REYNOLDS — & physiology, Rodentia KIRBY DNA synthesis, Rodentia BACCARINI REZENDE SCHREIBER Edentata BENIRSCHKE effect of deleterious compounds, cyto- chemistry, ultrastructure, Rodentia WEISHEIT hypervitaminosis Dj, Rodentia NEBEL teratogens on function, biophysics, histochemistry, autoradiography, electron microscopy, Rodentia KERNIS electron microscopy, histochemistiy. Homo, Mammalia VACEK , Cetacea, Pinnipedia YOUNG experimental study, Rodentia REVESZ giant cells, aging, in vitro, Rodentia DORGAN , Rodentia ORSINI growth, hormonal control, biochemistry, Rodentia ASAMI hemochorial, transport of insulin & cyclamate. Primates REYNOLDS histochemistry. Homo RIMNICEANU THIERY histochemistry & ultrastructure, Rodentia TIBBITTS Hofbauer cells, ultrastructure & cytochemistry, Carnivora, Homo, Rodentia KOMINKOVA Homo HAMILTON SCHRAMM in intergeneric hybrids, pathology, Artiodactyla HANCOCK intervillous space pressure, Primates RAMSEY Mammalia DAVIES maternal, circulation. Homo, Primates DONNER MISENHEIMER RAMSEY membrane, electron microscopy, Rodentia HERNANDEZ morphology & zymograms in twins. Homo THIERY pathology, Homo, Primates, Rodentia PANIGEL — , lipid histochemistry. Homo IVEMARK — , syncytial cells, Homo NEBEL perfused, effect of gonadotropins on steroid synthesis & glycogenolysis. Homo CEDARD perfusion, passage of vital dyes. Homo SCHNEIDER — studies. Homo, Primates, Rodentia PANIGEL physiology, Marsupialia RENFREE Pinnipedia HARRISON Primates BUTLER relation with ovary & uterus, Rodentia GAUTHIER PADYKULA TAYLOR routes of bacterial infection, Rodentia FEDINEC size, relation to fetal growth. Mammalia NAAKTGEBOREN STEGEMAN steroids, Artiodactyla, Edentata BRINCK structure, development & vascularization, Homo, Primates RAMSEY — , in vitro, Homo BAKER syncytial cells, structure & function, in vitro. Homo KASPI LONDON NEBEL tissue relations, physical & physiological, Artiodactyla ALEXANDER transfer of muscle relaxants, Rodentia JACOBS ultrastructure. Homo, Primates, Rodentia PANIGEL vessels, toxemia, malformations, multiple births. Homo VARMA yolk sac, autophagic area, cytochemistry, Rodentia WEISHEIT PLACODE(S) see also Sense organs PLANT EMBRYOLOGY & MORPHOGENESIS (experimental & physiological) see also Unicellular organisms aggregation centres, inductive action, chemotaxis, Acrasiales GERISCH — hormones, chemistry, Acrasiales PANNBACKER apex, vegetative & reproductive, histo- & cytochemistry DE FOSSARD apical dominance, auxin movement SCOTT — meristem SEAGO , explantation SAGAWA auxin & cytokinin, effect on embryo FRAGATA biochemistry & cytology, Phaeophvta BOUCK Bryophyta BOPP callus cells, in vitro HACCIUS — from floral apex, formation & bud differentiation HINDMAN — growth, differentiation in tissue cultures, mutants HARTE 284 cell contacts & differentiation, Acrasiales GERISCH — movement, Acrasiales KAHN — surface, incorporation of polysaccharide precursors, biochemistry, autoradiography, Acrasiales BURNSIDE — wall differentiation WERZ formation in mitosis DAUWALDER , ultrastiucture HEYN cellular differentiation in vitro, nuclear aspects PARTANEN , sequence of gene-controlled enzyme synthesis, Acrasiales FRANCIS chemotaxis, cell aggregation & differen- tiation. Acrasiales KONIJN chloroplast development HASELKORN chromosomes, molecular structure during genetic activity GAY coenobial forms, Chlorophyceae MILLINGTON control of morphogenesis & differentiation. Acrasiales KAHN development of specific gibberellins, Ascomycetes SPECTOR crown gall development BOPP cyclic AMP, effect on ion transport, Acrasiales FRANCIS CHI cytokinesis in earlv gametophyte, Filicinae PRAY development MUNROE — of branching filaments, computer simulation. Algae, Fungi LINDENMAYER — of cultured tissues NORSTOG — , vegetative & reproductive, Hepaticae JONES developmental biochemistry & genetics, Acrasiales LOOMIS — genetics, Ascomycetes BRODY — — , Eumycetozoina KERR , Hepaticae STERN — physiology CHEN , Acrasiales GREGG differentiation in colonial forms, Chlorophyceae HOBBS effect of alkaloids & steroids on differentiation of tissue cultures STETLER exogeneous DNA LEDOUX — on embryo of growth factors, anti- mitotics, radiomimetics, X-irradiation HACCIUS electron microscopy, Acrasiales, Phycomycetes HOHL embryogenesis LAKSHMANAN — & germination, electron microscopy MOLLENHAUER embryology, tissue culture & electron microscopy NORSTOG embryonic growth & differentiation. factors LA CROIX environmental factors inducing morpho- genesis, Rhodophyta RAMUS enzyme activities during germination AUGSTEN experimental developmental morpho- logy DeMAGGIO JACOBS — embryology LAKSHMANAN — • morphogenesis, tissue culture, histochemistry BABA ROBERTS fertilization & embryogenesis FISHER floral induction, effect of deoxyriboside base analogues & photoperiod BROWN — morphogenesis, meristem metabolism BROWN — organs, differentiation, protein changes HINDMAN flower initiation, physiology de FOSSARD flowering, biochemical mechanism TRIONE gametogenesis, fertilization & early development, electron microscopy, Chlorophyceae URBAN gametophytes, juvenile sporophytes, Filicinae PRAY genetic studies, Acrasiales SUSSMAN germinating seedling, growth SEAGO growth, effect of sterols, Fungi NORMAN — substances, morphogenetic reactions of varieties KIERMAYER histochemistry of differentiation at muhi- cellular level, Acrasiales PANNBACKER histodifferentiation in vitro CLUTTER SUSSEX histogenesis in vitro SUSSEX histone synthesis & function in sperm, Hepaticae BLOCH I A A, molecular basis for mode of action GALSTON irregular embryogenesis, correlation with embryogenesis in vitro LAKSHMANAN leaf morphogenesis, interaction between genes & environment HARTE leaves, vein system, Filicinae PRAY lethal mutants, genetics & physiology MiiLLER light absorption, role of phytochrome GALSTON — , effect on germination MAEDA — , morphogenesis, Characeae MAEDA — regulated development KLEIN meiotic development, DNA synthesis HOITA STERN membrane system of cells, changes during differentiation BAL mitosis. Fungi FULLER morphogenesis of phyllotactic patterns, Pteridophyta, Spermatophyta LINDENMAYER — troughout life cycle, Eumycetozoina KERR morphogenetic movement & cell adhesion, Acrasiales GARROD & differentiation, Acrasiales BONNER motile cells, Phycomycetes FULLER mutants causing developmental defects, Acrasiales GERISCH organ & cell differentiation, hormonal effects JACOBS osmotic gradients, ovule & embryo RYCZKOWSKI ovule formation SAGAWA pH of embryo & surrounding sap RYCZKOWSKI photobiology in development. Algae BUTLER photomorphogenic action spectra BROWN phytochrome in development BUTLER pollen tube growth SAGAWA , , protein & RNA synthesis MASCARENHAS primary wall constituents, autoradiography, histochemistry LEFFINGWELL propagules, factors controlling development SMITH protein changes in apex, photoperiodic induction HINDMAN — secretion & cell wall formation CHRISPEELS protonema, morphogenesis, Bryophyta BOPP pseudoplasmodium, analysis of differentiation, Acrasiales FRANCIS HUNTER radiation effects in relation to senescence & cell death, Gymnospermae BERLYN regulatory mechanisms in cultured cells MILLS relation between metabolism & development AUGSTEN reproduction, light induction, part, interaction with temperature, Fungi LEACH RNA metabolism, Chlorophyceae KOCHERT root regeneration from hypocotyl, Gymnospermae GREENWOOD — tip growth, effect of methylated xanthines CHENEY sap surrounding embryo, osmotic value, physiological activity & pH RYCZKOWSKI seed development, physiology MAY — , control of hydration SMITH sexual development, effect of sterols. Fungi NORMAN — induction, Chlorophyceae KOCHERT shoot apex & leaf, morphogenesis MILLINTON — growth, DNA synthesis BOPP spore formation, sporogenic substances P310. Fungi LEACH sporeUng, morphogenesis, Characeae IMAHORI sporulation, growth & differentiation, biochemistry, Myxomycetae RUSCH — , light-induced, biochemical mechanism, Fungi TRIONE subcellular components, protein synthesis, Acrasiales CECCARINI teratogenesis & pathology CHEN tissue culture, embryos & tissues HACCIUS — development, Golgi complex, cell walls DAUWALDER — differentiation, interaction with organelle development & experimental modification KEPHART WHALEY tracheary elements, differentiation, in vitro, hormonal control FINE ultrastructural changes PERRY during growth, Conjugales WADDINGTON vascular connection between main & lateral roots SEAGO 285 PLANT EMBRYOLOGY (contd.) wall polysaccharides, Golgi- mediated LEFFINGWELL PLEURA see Body cavities POLAR BODIES see Egg(s) POLARITY see Gradient(s); Symmetry POLE CELLS see Germ cells (primordial) POLYEMBRYONY ^ves KNJAZEVA experimental, orientation, Aves LUTZ — , Teleostei LUTZ Turbellaria KOSCIELSKI POLYMORPHISM (insects, including caste determination) caste determination, Isoptera BANERJEE diploid drones, Hymenoptera WOYKE environmental factors, Homoptera LEES Homoptera LAMPEL queen determination, biochemistry of queens & workers, Hymenoptera REMBOLD — determining substance in royal jelly, Hymenoptera REMBOLD wing, Homoptera KISIMOTO POLYPEPTIDES see Proteins POLYPLOIDY determinism, cytology, Turbellaria BENAZZI DNA content, Anitra LAVALLE experimental, Lepidoptera ASTAUROV triploid intersexes, genital apparatus, Diptera LAUGE Turbellaria BENAZZI POLYSACCHARIDES see Carbohydrate(s) POSTEMBRYONIC DEVELOPMENT see Development (postembryonic, fetal) POTENCY see Embryology (experimental) see also Determination; Organization; Regulation PREGNANCY see also Embryo-maternal relationships; Placenta(tion) alloxan-diabetes, Rodentia HUNT blood, amniotic & intervillous space pressures. Primates RAMSEY changes in uterine vessels, Rodentia ORSINI corpus luteum, factors controlling life, Rodentia ORSINI cortisone, Rodentia MERCIER decidualiziation, Carnivora, Rodentia ORSINI early, Rodentia WILSON effect of antimitotic agents, Rodentia MERCIER TUCHMANN chemicals, Lagomorpha, Rodentia HARPER enzymes in maternal blood. Homo ROBINSON estrogens, Carnivora BRINCK experimental diabetes. Mammalia MERCIER TUCHMANN immunology, Rodentia BILLINGTON JAMES maintenance, effect of deleterious compounds, Rodentia WEISHEIT pseudo-, decidualiziation, Carnivora, Rodentia ORSINI — , Mamamlia DIAMOND Teleostei CHAMBOLLE virus, Rodentia ROUX vitamin Di; toxicosis, Rodentia ORNOY PRIMITIVE STREAK see also Blastoderm fate of different parts, tracer study, Aves NICOLET Hensen's node, inductive power, effect of actinomycin, A ves G ALLERA , role in somite differentiation, Aves NICOLET inductive capacity, Aves G ALLERA role in body formation, Aves, Mammalia VACEK PRIMORDIAL GERM CELLS see Germ cells (primordial) PROLIFERATION see Mitosis PRONEPHRIC DUCT see Urogenital system PRONEPHROS see Kidney(s) PROSPECTIVE MAPS see Embryology (experimental) PROTEIN(S) (incl. Peptides & Polypeptides) actin-like, egg, Echinoidea MIKI albumen uptake, embryo, immunofluorescence. Gastropoda ARNOLDS a-2-macroglobulin, development & regeneration, Rodentia HEIM basic, electrophoresis & immunophoresis, early development, Echinoidea, Tunicata DAVENPORT — , embryo, Vrodela IMOH — , oogenesis, autoradiography, electron microscopy, Echinoidea SANCHEZ — , — & early development, Echinoidea BaCKSTRoM blood, genetics & physiology, Insecta EGELHAAF brain ANDERSON cell membrane, normal & cancer cells, Aves, Rodentia GOLDHOR central nervous system, Aves McCALLION changes in development, Anura, Echinoidea SPIEGEL early development, Anura STANISSTREET chromosomal, Aves HUANG comb, electrophoresis, Aves LAWRENCE contractile, biosynthesis & assembly FISCHMAN controlling RNA synthesis, eye lens fibre cells, Artiodactyla ELMER cortical contractile, mitosis, Echinoidea SAKAI differentiation, Amphibia, Insecta DUSPIVA — , cytochemistry, electrophoresis, Urodela GASSER — , disc-electrophoresis. Gastropoda DONGEN early development, Anostraca, Echinoidea HULTIN — stages. Amphibia MACELA MACHA PALECEK ROMANOVSKY egg, composition, radio-isotope study, Insecta ANGELS — & hemolymph, Insecta KOCH embryonic cells, subcellular components, Amphibia MASUl — & yolk, biochemistry, Teleostei YAMAGAMI epigenetic & genetic ontrol, cell differentiation, Vertebrata WHITT eye lens, crystallins, Anura McDEVITT , electrophoresis, Rodentia KONYUKHOV , immunology & immunochemistry, Aves, Homo DOORENMAALEN , regulation, Anura, Aves CAMPBELL CLAYTON TRUMAN , Vertebrata BRAHMA heme DALLMAN hemolymph, metamorphosis, biochemistry, Hymenoptera LENSKY — , reproductive cycle, Crustacea HORN immunochemistry, Teleostei LAALE interaction with nucleic acid, early devel- opment, Echinoidea IMMERS Lepidoptera EICHER metabolic changes in primary induction, Urodela KAWAKAMI metabolism. Amphibia TIEDEMANN — , epidermal apical cap, Vrodela DARDA — in differentiation. Amphibia FAULHABER explanted embryo in relation to growth & differentiation, Aves KLEIN — , larval, Trematoda GILBERTSON microtubules, immunology & thiol-disulfide exchange, Echinoidea KIMURA mitotic apparatus, egg, Echinoidea MIKI 286 mucoproteins in fetal skin. Homo GIANNETTI nervous tissue, synapses, Veriebrata KORNGUTH neural retina, Aves SCHWARTZ nuclear & cytoplasmic, synthesis, liver in vitro, hormone influence, Rodentia MALPOIX nucleoproteins, atypical, larval development, Diptera RASCH oocyte, uptake & deposition, Orthoptera KUNZ optic lobes, eyeless animals, Aves MARCHISIO organ-specific, kidney, Aves CROISILI.F. parotid gland, Rodentia REDMAN passage from motlier into early embryo, Lagomorpha KULANGARA pattern changes in yolk system, Coleoptera KuTHE — , Diptera HuRLIMANN peptides, Diptera BuHLER plasma, synthesis in clonal liver cells. Primates, Rodentia KAIGHN polypeptides, conformational changes in morphogenesis WERZ polytene chromosomes, Diptera CAVE produced in presence of RNA inhibitors, in vitro, Echinoidea COUSINEAU quantitative cytochemistry, induction & differentiation, Vertebrata VAHS regeneration. Amphibia ANTON ribosomal, regulation, biochemistry, auto- radiography, Diptera KIEFER role in spicule calcification & synthesis, Echinoidea salivary gland chromosomes, Diptera serum, Artiodactyla, Rodentia — , Aves, Rodentia soluble, organogenesis, Rodentia ELLIS KATO PAGF. HEIM SERMAN SKREB ROLLINS KARLSSON IMBERSKI WYATT BUTROS stage-specific, cell & organ culture Anura , immunology & biochemistry, Artiodactyla — & tissue specific, Diptera, Lepidoptera synthesis, action of hormones & meta morphosis, Lepidoptera RNA, Echinoidea activation during cleavage, Echinoidea WILT after cortical lesions, Anura BRACKET Anura CASTON associated with neural & endo-meso- dermal competence, Urodela SAAG cell aggregation. Amphibia, Aves GRUNZ — differentiation in vitro, Aves COLEMAN ciliar morphogenesis & regeneration, blastula & gastrula, Annelida, Echinoidea AUCLAIR differentiating cells, E.M. autoradio- graphy. Amphibia JACOB early development, Echinoidea GIUDICE , Gastropoda COLLIER — stages. Gastropoda BIGGELAAR — — , Insecta , Rodentia Echinoidea effect of hormones, postembryonic, Dictyoptera, Diptera egg, Echinoidea eggs & embryos, Echinoidea embryo, biochemistry, in vivo & in vitro, Echinoidea INFANTE — , Echinoidea HUMPHREYS eye lens, Aves ZINN in vitro, control, Aves BRAVERMAN — — in vivo & in vitro, Artiodactyla, Aves PAPACONSTANTINOU inhibitors, developmental effects, Echinoidea -, effects on early development, Teleostei — in vitro, polysome formation & break down, Anostraca — , lens induction & differentiation, Aves, Rodentia — , limb regeneration, Urodela — , localization during cleavage, auto- radiography. Gastropoda — , metamorphosis, role of ecdysone, Diptera — , normal & lobeless embryos. Gastropoda TEITELMAN — , oocyte, Anura HORTON — , oogenesis & early development, Diptera BIER SCHNETTER MOLINARO MONROY SHAAYA IKEDA IVERSON CHENEY BATTLE CLEGG ZWAAN DARDA WAL SEKERIS — , , Echiuroidea, Gastropoda GOULD — , ovary in vitro, Anura, Rodentia FORD — , polytene chromosomes, normal & infected larvae, Diptera PA VAN — , queens & workers, Hymenoptera REMBOLD — , regional differentiation, Anura, Urodela LANDESMAN — , regulation WOOL — , — , egg & embryo, Echinoidea PIATIGORSKY — , relation with free amino acid pool, Teleostei, Urodela CRAWFORD — , morphogenesis, tracer studies, Echinoidea GEZELIUS — , reticulocytes, Lagomorpha COHEN — , stage specific, normal & experimental, Echinoidea ELLIS — ■, storage & expulsion, effect of exogenous agents, parotid gland, Rodentia GORDON — , synchronized cultures, Ciliata IKEDA — , translational level control, Artiodactyla, Rodentia PAGE — & transport, effect of hormones, oogenesis, Orthoptera WYATT — & utilisation, nerve cells, Aves O'BRIEN — , yolk sac derived erythroid cells, Rodentia FANTONI tissue-specific, control of synthesis, Anura ROLLINS transfer, placenta & fetal membranes. Mammalia ANDERSON transmission, fetal membranes, Lagomorpha WILD turnover, central nervous system, Rodentia STEWART yolk, biochemistry, Cheleutoptera, Orthoptera KOCH — synthesis, transport & composition, Crustacea, Vertebrata WALLACE PROTISTA see Unicellular organisms PROTOZOA see Unicellular organisms PUROMYCIN see Antibiotics RADIATION see Irradiation RADIO-ACTIVE TRACERS see Autoradiography; Biochemistry; Radio-isotopes RADIO-ISOTOPES see also Autoradiography collagen, polymerization, pupa, Lepidoptera ASHHURST glucose uptake, early embryo, Aves HARRISON in analysis of development, Tunicata MANSUETO intestinal intramural nerve plexus, Rodentia GABELLA ionic permeability, egg, Echinoidea, Teleostei HORI metabolic pathways, Invertebrata BLACK nuclear labelling, genetic & embryonic effect. Amphibia CHIBON oogenesis, yolk, protein, glycogen, Insecta ENGELS phosphate, sugar & nucleic acid metabolism of embryo, Echinodermata YANAGISAWA precursors, incorporation in tissue, Aves DESVEAUX primitive streak, fate of different parts, Aves NICOLET protein level, spindle microtubules, cleavage, Echinoidea, Echiuroidea ANDERSON — synthesis, nucleo-cytoplasmic relations, Echinoidea GEZELIUS sympathetic neurons & neural connections, Aves CANTING tritiated DNA & thymidine, incorporation in ovary & testis, Aves, Rodentia CALLEBAUT — thymidine, mutant embryos in vitro, Rodentia STEIN — uridine & thymidine, incorporation in germ cells, Aves CALLEBAUT 287 RADIOMIMETIC AGENTS effect on chromosomes, relation to organo- genesis, Rodentia TAMBOISE cleavage, Urodela SENTEIN REAGGREGATION see Cell(s) see also Tissue culture REARING METHODS axenic cultures, Nematoda Cestoda Crustacea larval stages, Polychaeta strains, Amphibia LOWER VOGE RICE CAZAUX NACE REGENERATION (physiological) brain. Mammalia POLEZHAEV epidermis, Rodentia RIECK intestinal epithelium, Urodela MARTIN skin, cell renewal, Lacertilia MADERSON REGENERATION (traumatic) see also Unicellular organisms absence, factors involved, Hirudinea CORNEC Actinozoa POLTEVA adrenal cortex, histochemistry, Rodentia BELKA — gland, Rodentia PORTAK a-2-macroglobulin, Rodentia HEIM Amphibia SINGER anomalies, Oligochaeta, Polychaeta, Turbellaria STePHAN anterior, Polychaeta DEAN — , photoreceptors, ultrastructure, Nemertea VERNET — , porphyrin synthesis, Nemertea VERNET appendages, control of pigmentation, Crustacea RANGA — , differentiation of implanted tumours, Anura MIZELL Asteroidea LENDER biochemistry, Annelida DURANTE PUCCIA blastema cells, origin, Polychaeta SICHEL — formation, cellular mechanism, Turbellaria BETCHAKU — , in vitro, Turbellaria OKUNO SUGINO — in vivo & in vitro, Turbellaria MANELLI PASQUINI STAMPA — , organ culture, Urodela MARIN — , ultrastructure, Turbellaria SAUZIN blastemata induced in heterotopic positions, Urodela HARREBOMEE blood vessels, Aves, Homo, Mammalia KREDIET bone & cartilage, Carnivora BARTOS — , histochemistry, Rodentia MaKINEN RAEKALLIO caudal & cranial, histology, Polychaeta HOFMANN — , endocrine control, Polychaeta HOFMANN cell differentiation, Anura, Hydroidea AOTO , effect of inorganic ions, Hydroidea MACKLIN — division, differentiation & movement, Hydroidea PARK — migrations, role of cell types, mesoglea & perisarc, Hydroidea DIEHL — & tissues, ultrastructure, Urodela SCHMIDT cellular basis, Nemertini PEDERSEN central nervous system, Anura FILONI . ■ — , mitosis. Amphibia BAFFONI cerebellum, Teleostei LOMBARDO chemistry, Urodela SCHMIDT cilia, gastrula, protein synthesis, Annelida. Echinoidea AUCLAIR Coelenterata, Ctenophora TOKIN connective tissue, filament formation, Turbellaria PEDERSEN cranium bones, Carnivora KANTOROVA , Mammalia POLEZHAEV Ctenophora PYLILO dedifferentiating cells, Actinozoa POLTEVA dedifferentiation & differentiation, Urodela HARREBOMEE TRAMPUSCH dental tissue, Carnivora POLEZHAEV effects of antimetabolities, antibiotics & nucleic acids, Amphibia, Echinoidea WOLSKY antiserum, Urodela TABAN Be, Turbellaria NEEDHAM chemicals, correlation with effect of enzymes, Echinodermata, Turbellaria HEIN electrical & biochemical stimulation, Coelenterata GOODWIN hormones & antimetabolites, histochemistry, Aves, Rodentia ACHTELIK irradiation, Amphibia SCHOTTE sympathicomimetic drugs, Turbellaria, Oligochaeta ROSI vitamin A, Anura, Aves NIAZI X-rays, Asteroidea HUET , Polychaeta BAUTZ , Urodela VERWOERD endocrine factors. Amphibia THORNTON — glands, part, thyroid, morphogenesis, Rodentia WROBLEWSKI epidermal apical cap, protein metabolism, Urodela DARDA epithelium, cytology, Rodentia DECK eye, following irradiation, Rodentia RUGH eye lens MIKAMI , antigenic studies. Amphibia CAMPBELL TRUMAN , biochemistry, Aves McCALLION , biochemistry, Lagomorpha, Primates AGARWAL ANGRA , causal analysis, autoradiography, Urodela REYER , cell cycle & differentiation, Urodela EISENBERG , — replication, activation, Urodela YAMADA , dedifferentiation, Urodela YAMADA , determination of site, Urodela LOPASHOV , DNA synthesis, Urodela EISENBERG , embryonic ocular tissue implants in anterior chamber, Lagomorpha, Primates AGARWAL ANGRA , in vitro, Urodela EISENBERG & limb, common stimulating factors, Urodela REYER , nucleolar changes, electron microscopy, Urodela DUMt)NT , regulatory mechanisms, Anura CAMPBELL , tyrosinase, Urodela ACHAZI , Urodela KATO — stalk, nerve cells & neurosecretory cells, Crustacea VERNET — , Turbellaria KISHIDA fracture repair, Urodela PRINS TRAMPUSCH gene activation, Turbellaria COWARD general FREEMAN KUHN genital apparatus, role of neurosecretion, Turbellaria GRASSO germ cells, Turbellaria DI MARCOTULLIO growth & differentiation, Turbellaria MANELLI PASQUINI Hemichordata BURDON hind limb, Anura MICHAEL hormonal influences, Urodela SCHMIDT Hydroidea WEBSTER Hydrozoa TARDENT I-cells, cytology, Hydroidea KIDO KISHIDA in vivo & in vitro, Annelida MARCEL inductive processes, Turbellaria, Urodela WOLFF — & inhibitory substances, Turbellaria LENDER influence of nerves & endocrines, Urodela LIVERSAGE inhibition, Hydroidea TWEEDELL Insecta POHLEY interstitial cells, cytology, Hydroidea KIDO intrauterine, malformations, Homo BERNDORFER iris, Lagomorpha, Primates AGARWAL ANGRA larval, Polychaeta MALIKOVA limb, aneurogenic, on normal host, Urodela THORNTON — , — , proliferation pattern, Urodela HEARSON — , Ani4ra TSCHUMI — , autoradiography, Urodela FORET — , blastema in vitro, Urodela FORET — , blastemal mesenchyme, interaction with wound epidermis, Urodela FABER — , cuticula deposition, Dictyoptera LEOPOLD 288 — , denervated, de- & redifferentiation, cytochemistry, Urodela HEARSON — , effect of drugs, Urodela GEBHARDT — , — — heterotopic tissues, Urodela GLADE — , thyroxine, larva, Anura VAN STONE — , ultraviolet radiation, Urodela BUTLER — , embryo, Dictyoptera BULLIERE — , enzymes, Anura NIAZI — , heterotopic, Anura TRAMPUSCH — , induced, Marsupialia MIZELL — , influence of nerves & denervation, Urodela BUTLER — , thyroid hormones, Anura KOLLROS — , larva, morphogenetic factors, Dictyoptera BULLIERE — , mechanics of blastema formation, Urodela BUTLER — , nerve influence, immunobiology, Urodela THORNTON — , organogenesis of carpals, role of radius, Urodela MANNER — , polarity & gradients, Orthoptera BOHN — , — reversal, Urodela BUTLER — , proliferation, DNA synthesis & nerve fibre pattern, Urodela HEARSON — , protein synthesis & changes in cell volume, Urodela DARDA — , re-amputated regenerates, effect of hypophysectomy, Urodela HILFER — , regression after irradiation, Amphibia SCHOTTE — , restoration after X-irradiation, bio- chemistry, Urodela POLEZHAEV TEPLITZ TUCHKOVA — , role of electrolytes. Amphibia BURKART — , hormones. Amphibia TASSAVA — , nerves, Anura NIAZI — , prolactin, Urodela WATERMAN — & tail, Anura NIAZI — , thyroid & adrenal hormones, Anura NIAZI — , transplanted blastemas, regional organization, Urodela FABER — , Vertebrata KUDOKOTSEV — , X-irradiation, tissue & organ grafts, Urodela LAZARD liver, Aves, Reptilia ASNANI BONNY — , effect of estrogens, Rodentia DZIUBA — , vitamin B12, Rodentia CRACIUN — , homeostasis, Rodentia TERAYAMA — , influence of reticulo-endothelial system, Rodentia STERN — , kidney, cellular proliferation, Mammalia ARGYRIS — parenchyma, mitosis, Rodentia BERTALANFFY — , RNA/DNA hybridization, Rodentia CHURCH lymph gland, Aves, Reptilia ASNANI BONNY macromolecular metabolism & satellite DNA function, Crustacea GRAHAM KERR SKINNER malformations, origin, development & transmission, Turbellaria SCHILT STePHAN mammary gland, transplantation, Rodentia HOSHINO mandible & os priapi, effect of castration & androgens, Rodentia BERESFORD morphogenetic fields, Urodela TRAMPUSCH motor nerves, Teleostei MARK muscle, cytological changes, Urodela DECK myocardium, biochemistry, Lago- morpha SADOKOVA — , Mammalia AKHABADZE MALIOVANOVA POLEZHAEV Nemertea GONTCHAROFF IWATA neoblast, cytology & ultrastructure, Turbellaria KIDO KISHIDA — differentiation, Turbellaria OKUNO SUGINO — , electron microscopy, Turbellaria LENDER — , migration & differentiation, Oligochaeta, Polychaeta, Turbellaria STePHAN — movement, Hydrozoa LESH nerve fibres, larval, Urodela BAFFONI , olfactory system, electrophysiology, Teleostei WESTERMAN — networks, behavioural, Vertebrata SPERRY nervous system, postmetamorphic, Anura BAFFONI , Rohon-Beard cells. Amphibia MARINI neural retina, autoradiography, Urodela REYER normal cell populations, Rodentia BERTALANFFY nucleo-histones. Amphibia, Turbellaria T6R0K of defective organs. Amphibia NEWTH Oligochaeta SAUSSEY TARDENT optic nerve, functional aspects, Anura GAZE origin of cells, Turbellaria, Urodela WOLFF peripheral nerves, Aves, Carnivora ERHART pharynx, influence of tissue & organ extracts, Turbellaria ZILLER — , inhibitory substances, Turbellaria BEAUPAIN Phasmidoptera BART physiological gradients & polarity control, Turbellaria COWARD polarity & differentiation, Polvchaeta LESH Polychaeta BERRILL BOILLY Porifera BR0NDSTED KOROTKOVA protein metabolism, Amphibia ANTON regeneration cells, origin, activation & differentiation, Annelida BOILLY regulation, polarized, linear pattern, Hydrozoa HICKLIN relation with asexual reproduction, Turbellaria KRITCHINSKAYA immunology. Mammalia WATTS Reptilia BELLAIRS retina, Anura, Teleostei LOMBARDO — & lens, metaplasia, Teleostei LOPASHOV SOLOGUB RNA synthesis, Amphibia BURGESS role of endocrine system, Dictyoptera O'FARRELL STOCK hormones, Urodela MANNER nervous system, Asteroidea HUET nervous system & territories of regeneration, Turbellaria SCHILT , Turbellaria T0R6K ■ neurohormones, effect of neuro- pharmaca, Hydroidea, Turbellaria LENICQUE — • — neurosecretion, Turbellaria, Oligochaeta ROSI scales, Teleostei ASAKURA — , ultrastructure, mineralization, Teleostei NUSSBAUM sciatic axotomy, de- & regeneration of spinal cord structures, Aves HOUTHOFF sinus gland, Crustacea VERNET spinal cord, cellular origin, Urodela FORET — — , Lacertilia SIMPSON , relation to Mauthner cell & thyroid, Urodela MOULTON structures following sciatic axotomy, Aves HOUTHOFF , Urodela BUTLER spleen, Aves, Reptilia ASNANI BONNY starving animals, cytology & cyto- chemistry, Turbellaria PEDERSEN stomach, Rodentia TIMASHKEVICH striated muscle, cytogenesis, tracer studies, Rodentia TOTO tail, epidermis, Lacertilia MADERSON — fin rays, fine structure, Teleostei KEMP — , Lacertilia CHAKKO HIRADHAR SHAH WERNER — , Lacertilia, Urodela SIMPSON — , muscle cell differentiation in vitro, Lacertilia SIMPSON telencephalon. Amphibia LOMBARDO territories, Isopoda HOARAU testis, Anura MAJORCA tissue & organ culture, Turbellaria ZILLER tracer studies, Urodela TRAMPUSCH trigeminal nerve, motor root, early stages, Aves STRAY Turbellaria BR0NDSTED HIRN ICHIKAWA undifferentiated cells, activity, normal & regenerating animals, Turbellaria CHANDEBOIS Urodela BRUNST Vertebrata STOCUM 289 REGENERATION (contd.) xenoplastic blastemata, compatibility. Anura, Urodela TRAMPUSCH REGULATION (embryonic) blastoderm, Aves Hydroidea Lacertilia limb, late, Aves ROGULSKA WEBSTER HUBERT LAZARD PINOT — , skeletal morphogenesis, Aves KIENY — & wing bud, mesoderm, Aves DUBEY PATIL wing bud, Aves AMPRINO REPRODUCTION (asexual) see Asexual reproduction REPRODUCTION (sexual) see also Egg(s); Fertility (& sterility); Fertilization; Reproductive system; Spermatozoa etc. anatomy & ecology, Homoptera MOCHIDA artificial insemination, Mammalia ROWSON Artiodactyla HUBER as effected by mutants, Diptera DOANE autogeny, Diptera BRUST biochemistry, Mammalia MANN Cetacea HARRISON Chiroptera UCHIDA comparative biochemistry, Elasmobranchii, Mammalia, Mollusca MANN constant-estrus, oogenesis, Rodentia SEGAL WITSCHI effect of benzpyrene, Rodentia RENNETS enzyme inhibitors, antimetabolites, irradiation, Hymenoptera GROSCH hypoxia, Mammalia CLEGG space fUght, Insecta GROSCH embryonic diapause, maternal endocrine glands, Mammalia BAEVSKY endocrinology, male, Orthoptera EWEN — & periodicity, Polychaeta HAUENSCHILD environmental factors, Aves KAMAR estrus cycle, alloxan-diabetes, Rodentia HUNT female performance, effect of immunization against spermatozoa, Rodentia McLAREN fertilizing capacity of sperm, role of hormonal state of female, Carnivora, Lagomorpha, Rodentia SOJKA gamete shedding, role of radial nerves, Asteroidea NOUMURA — transport in female, Mammalia CLEWE Gastropoda MAZURKIEWICZ hormones, Teleostei YAMAMOTO immunology, Homo, Mammalia EDWARDS influence of endocrine glands, Aves KAMAR gonads, Aves KAMAR intra-uterine contraceptive devices, mode of action. Mammalia ECKSTEIN male, physiology, Rodentia HUMINSKI maternal effect of cross-fostering, Artiodactyla ROBISON oviduct secretions, effect on sperm, Lagomorpha HAMNER oviposition, behaviour, Anura SEDRA ovulation time. Primates HENDRICKX paedogenesis, Diptera ULRICH physiology, Carnivora BUCHANAN — , Dictyoptera BARTH — & functional morphology, Orthoptera EWEN — , histochemistry, Isoptera BANERJEE Pinnipedia HARRISON Polychaeta BLAKE DEAN Primates BUTLER recognition of specificity, compound forms, Ascidia TANAKA WATANABE semen & egg production, effect of temperature, Aves BOONE seminal antigens, Artiodactyla, Homo KULANGARA — plasma protein antigenicity. Homo NAKABAYASHI spawning habit since 1937, Crinoidea DAN — , mechanism & electron microscopy, Asteroidea KANATANI SHIRAI — , Mollusca, Phoronida, Polychaeta TUCKER sperm, artificial insemination, ovulation & breeding time, Carnivora HAMNER SOJKA SDermatozoa, apyrene, function, Lepidoptera FRIEDLANDER superfecundity by hormone treatment, Rodentia McLAREN Turbellaria ICHIKAWA wild animals. Mammalia BIGGERS REPRODUCTIVE SYSTEM see also specific parts; Genital tract; Urogenital system accessory glands, male, ultrastructure, Diptera ACTON — organs, giowth patterns. Mammalia CLEGG — sex gland, effect of hormones on proto- catechuic acid glucoside synthesis, Dictyoptera SHAAYA , pathology, Artiodactyla BLOM comparative anatomy, Amphibia IWASAWA — morphology, Mammalia MOSSMAN Conchostraca ZAFFAGNINI cytochemistry, Diptera LEOPOLD descriptive & experimental study. Cephalopoda GRASSO — , Cheleutoptera CAVALLIN determination & differentiation, triploid intersexes, Diptera LAUGE diploid drones, Hymenoptera WOYKE ductus deferens, electron microscopy. Homo HOLSTEIN effect of Cd, Mammalia CLEGG experimental embryology, Amniota, Homo MATEJKA — study, Anura GIPOULOUX female, comparative anatomy. Mam- malia STRAUSS histophysiology, sterile hybrids, Aves GOMOT MARCHAND larval, Crustacea PA YEN male, biochemistry, Mammalia MANN — & female, larva, Coleoptera HUET mechanism of hormone action NOUMURA modifications induced by steroids, Teleostei ASHBY morphogenesis & evolution, Amniota, Homo MATEJKA Mystacocarida ZAFFAGNINI organ culture, endocrinology,/! vej. Mammalia ZAAIJER ovarian-uterine-placental relationship, Rodentia GAUTHIER PADYKULA TAYLOR pathology, Artiodactyla BLOM phallus, Chelonia, Lacertilia, Ophidia PIEAU RA'i'NAUD postembryonic, Chilopoda ZERBIB — ■ development, Dermaptera GILES postnatal, Insectivora MORRIS Primates ZUCKERMAN prostate, effect of testicular interstitial cell tumours, in vitro, Rodentia POURREAU regeneration & differentiation, role of neurosecretion, Trematoda, Turbellaria GRASSO Rodentia ZUCKERMAN ASHBY HYODO RESPIRATION see also Metabolism acidosis. Mammalia SIMKISS Anura LEGNAME blastocyst, Lagomorpha TORRES cell differentiation, Anura, Rodentia, Urodela KUCIAS control, anoxia tolerance, homeostatic mechanisms, pouch fetus, Marsupialia ARNOLD SHIELD Diptera FOURCHE early stages, Anura HAMBURGER , Teleostei CHANCONIE DEVILLERS effect of environmental conditions, Aves LOKHORST ROMIJN hypoxia on growth & reproduction. Mammalia CLEGG egg & embryo. Gastropoda GEILENKIRCHEN — , relation with embryonic mortality, Artiodactyla TORRES embryo, Tunicata D'ANNA embryonic tissues, normal & pathological, Aves DREICHLINGER 290 hypoxia, tnorphogenetic & biochemical effects, Aves Lepidoptera Oligochaeta GRABOWSKI FOURCHE LANDSTR6M L0VTRUP PRESS metabolism, Teleostei, Vrodela — , — stages, Echinoidea oocyte, Aves relation with glycolytic enzymes, Teleostei BOULEKBACHE oxidative phosphorylation, early stages, Teleostei CHANCONIE DEVILLERS spermatozoa, Anura VALDEZ RESPIRATORY TRACT laiynx, fetal, experimental study, Artio- dactyla, Rodentia TOWERS RETICULO-ENDOTHELIAL SYSTEM see Macrophage system RHESUS FACTORS see Immunology RIBONUCLEIC ACID see also Nucleic acids activation during cleavage, Echinoidea WILT causing tissue transformation, Aves NOTO chromosomal, Aves HUANG DNA aimealing, cultured cells, Anura JOHN JONES — -like, embryo, Anura GASC embryonic cells, dissociated, effect of inductive agents. Amphibia lYEIRI effect on heterologous fibroblasts, Aves, Rodentia EWART SANN protein synthesis, Echinoidea BUTROS fractionation, gene expression, Diptera LAIRD from embryonic organs, action on differen- tiation of early blastoderm fragments in vitro, Aves BUTROS hormone action & metamorphosis, Lepidoptera WYATT implantation, Rodentia SEGAL incorporation in fibroblasts, Aves SANN lens development, Aves PIATIGORSKY messenger, changes associated with primary induction, Anura EVANS — , embryo, Anura MELTON — , fetal & regenerating, liver, Rodentia CHURCH — , hemoglobin synthesis, yolk sac derived erythroid cells, Rodentia FANTONI — , stabilization, lens fibre formation in vivo & in vitro, Artiodactyla, Aves PAPACONSTANTINOU — translation, site of hormone action, various stages, Lagomorpha CHURCH — , unfertilized eggs, Echinoidea RINALDI metabolism. Amphibia TIEDEMANN — , cleavage. Gastropoda DAUWALDER — , creeper mutant, Aves EVANS — , early stages, Aves WYLIE — , metamorphosis & pupal diapause, effect of hormones, Lepidoptera BARTH — , polytene nuclei, Diptera EDSTROM — , puffs, Diptera DANEHOLT myoblast, normal & dystrophic, Aves, Homo, Rodentia JANS ROSS nuclear, metabolism, early stages, Echinoidea L0VTRUP relation to mitotic cycle changes, early stages, Echinoidea, Teleostei, Urodela ROTT ribosomal, oogenesis. Amphibia GALL — , — , gene amplification, Anura GALL — , regulation, biochemistry, autoradio- graphy, Diptera KIEFER — synthesis regulation, Anura MIYAHARA WADA YAMANA stage-specific, cell & organ culture, Anura ROLLINS supply, oocyte, Insecta BIER synthesis, activation, iris in vitro, Urodela REESE — , controlled by proteins, eye lens fibre cells, Artiodactyla ELMER — , differentiating cells, E.M. autoradio- graphy. Amphibia JACOB — , early development. Gastropoda COLLIER — , — embryogenesis, relation to energy — , , Insecta — , , Teleostei — , Echinoidea — , effect of thyroxine, Anura CRAWFORD GIUDICE KANKI SCHNETTER BELLWARE WARTIOVAARA WILT STADLER WEBER — , embryo, Echinoidea HUMPHREYS — , embryonic skin, Aves, Rodentia SORIANO — in cell aggregation. Amphibia, Aves GRUNZ egg, Hemiptera FORREST metamorphosis, role of ecdysone, Diptera SEKERIS — in vitro, Anostraca CLEGG — , inhibitors, effects on early development, Teleostei BATTLE — , lens fibre formation in vivo & in vitro, Artiodactyla, Aves PAPACONSTANTINOU — , pancreas & salivary gland in vitro, Rodentia BERNFIELD — pattern, eye lens, Aves MODAK PERSONS — primed by isolated chromatin, Echinoidea OZAKI — & processing, cell differentiation in vitro, Aves COLEMAN — , regenerating tissues. Amphibia BURGESS — , relation with histones, neural crest in vitro, Anura ANDREW GABIE — , ribosomes, Echinoidea MUTOLO — , Tunicata FARINELLA PUCCIA — , yolk sac derived erythroid cells, Rodentia FANTONI tissue-specific, control of synthesis, Anura ROLLINS transfer, control, normal & hormone induced development, Aves BERNFIELD — , hemoglobin & blood protein synthesis, Aves PRCHAL THOMPSON WAINWRIGHT — , heterogeneity, Rodentia MOLINARO translatable, effect of RNAse inhibitors, in vitro, Echinoidea COUSINEAU transformation of primarily activated ectoderm, Urodela SASAKI uptake by myoblasts, in vitro, Aves, Homo, Rodentia JANS ROSS RIBOSOMES see Subcellular components SACCUS VASCULOSUS SALIVARY GLAND see Gland(s) SCALE(S) see also Skin development & regeneration, Teleostei ASAKURA regeneration, ultrastructure, mineralization, Teleostei NUSSBAUM role of epidermis & mineralization, Teleostei KREJSA LUSE SEMEN see Reproduction (sexual) SENSE ORGANS see also specific organs; Placodes chemoreceptor cells, enzyme, histochemistry, electron microscopy, Carnivora, Homo, Rodentia KRAUS — , histochemistry, Lagomorpha DRUKKER cutaneous, experimental study, Aves, SAXOD Herbst's & Grandry's corpuscle, ultra- structure, cholinesterase, Aves SAXOD Homo SOLERE peripheral receptors, histochemistry, electron microscopy. Homo, Mammalia CAUNA photoreceptors, fine structure, regeneration, Nemertea VERNET — , histochemistry, Mollusca KOSHIDA — , Invertebrata EAKIN relation to central nervous system, in animals with tandem heads, Urodela BRaNDLE 291 SENSE ORGANS (contd.) sensory evoked potentials, fetus, Homo — structures, effect of polarity. Amphibia taste buds, electron microscopy, cyto- chemistry. Homo SERUM see Blood SEX CHROMATIN see Nucleus SEX DETERMINATION see also Sexual development cytology. Axes effect of hormones, Aves genetics, Crustacea hybrids, Anura Hydroidea VANZULLI HIBBARD SEVCENKO KOSHIDA VAN DETH GINSBURGER MAJORCA STAGNI TARDENT Hymenoptera WOYKE immunological analysis, Rodentia FURUSAWA Prosobranchia GOMOT GRIFFOND role of hormones, Aves LUTZ sex-ratio disturbances, maternal inheritance, Diptera POULSON SEX DIFFERENTIATION see Sexual development SEX HORMONES see Hormones SEX-RATIO see Sexual development SEX-REVERSAL see Sexual development SEXUAL DEVELOPMENT see also specific sex organs; Reproductive system; Sex determination accessory tissues, effect of androgens & oestrogens, Rodentia TATA Amphibia AOTO THIEBOLD Anura CAMBAR Aves DUBOIS LIMBORGH STOLL Bryozoa RANZOLI Chelonia PIEAU Chondrostei PERSOV correlation with pituitary cytology, Anura HSU descriptive & experimental study. Cephalopoda GRASSO different stages, neurosecretion, Polychaeia HOFMANN early secondary sex characters, experimental study, Aves WOLFF effect of androgens & antiandrogens, Lagomorpha, Rodentia ELGER perinatally administered gonadal hormones, Rodentia SWANSON sex & gonadotropic hormones, Lacertilia, Ophidia RAYNAUD steroids, Teleostei ASHBY thermal stress, Chleutoptera BERGERARD endocrine control, Chilopoda ZERBIB endocrinology,Po/yc/iaera HAUENSCHILD experimental studies, Anura WITSCHI free-martins, spontaneous, Aves LUTZ gonads. Homo ASAYAMA hermaphroditism, endocrine control, Crustacea CHARNIAUX — , gene-conditioned, Rodentia GUMBRECK — , male, non functional, role of androgenic gland, Crustacea FRIED — , morphology & physiology, Teleostei LISSIA _, Rodentia ALLISON — , sex gradient, Hydroidea, Polychaeta, Turbellaria VANNINI — , Teleostei HUVER hormonal control, Crustacea BERREUR CHARNIAUX , Rodentia LaVELLE hybrids, Aves GOMOT Hydroidea STAGNI gonads, experimental analysis, Aves AMANUMA ASAYAMA influence of chemical & physical agents SALZGEBER intersexes, triploid, genital apparatus, Diptera LAUGE Isopoda KATAKURA Mammalia DIAMOND normal & sex-reversed, transplantation, explantation, castration, hormone injection, Aves WOLFF Oligochaeta SAUSSEY Rodentia TARKOWSKI role of gonadal hormones, Aves, Rodentia NOUMURA neurosecretion, Crustacea CHARNIAUX sex differentiation after germ cell destruction, Anura DI GRANDE — inductors, two types, Lagomorpha, Rodentia ELGER — ratio, effect of temperature, Vrodela DOBROWOLSKI , karyotype. Homo SASAKI — reversal by Leydig cell tumours, in vitro, Rodentia POURREAU — ■ — , chromosomes, Anura MIKAMO , high temperature, Anura HSU , inhibition by antibiotics, Anura STAGNI VANNINI sexual characters, primary & secondary, Echinodermata TAHARA steroid synthesis, Teleostei COLOMBO Teleostei HUVER PERSOV THIEBOLD Vertebrata MARAUD SHELL see Egg(s); Integument SHELL GLAND see Integument; Oviduct SHOULDER GIRDLE see Skeleton SKELETON see also specific parts; Bone(s); Cartilage abnormalities, studied by organ culture, Rodentia KONYUKHOV allometric gi^owth, Chiroptera KLIMA appendicular. X-ray analysis, Aves GOFF axial & Umb, role of cell orientation in tissue organization, Aves, Rodentia TRELSTAD calcification. Amphibia, Echinoidea PILKINGTON capsule, vascular bed. Homo, Mammalia MAZHUGA carpals in limb regeneration, Urodela MANNER chronology, Anura SEDRA effect of colchicine, Rodentia DWORNIK pai'alysis & amniotic pressure, Aves SULLIVAN podophyllin & temperature, Rodentia DWORNIK exostosis, multiple, Perissodactyla SHUPE general PRATT growth variations, Lagomorpha SAWIN joints, normal & abnormal development, Aves DRACHMAN long bones, effect of hypophysectomy, Aves WATTERSON Mammalia DA VIES metamorphosis, electron microscopy, Anura KEMP morphogenesis, Aves, Mammalia, Reptilia BELLAIRS mucopolysaccharides in normal & abnormal development, Rodentia KLEINEBRECHT organ culture, morphology & biochemistry, Mammalia SCHRYVER OS priapi, fracture healing, effect of castration & androgens, Rodentia BERESFORD ossification age. Homo JIT prenatal. Homo MEYER — , Rodentia RAJTOVA pelvic floor. Homo VERWOERD Rodentia HOSHINO spicule calcification, role of protein, Echinoidea ELLIS — formation by reaggregated cells, Echinoidea ELLIS 292 , Echinoidea OKAZAKI , ultiastructure & effect of NaF, Echinoidea HEROLD sternum, morphoaenetic movements, Aves, Rodentia JACCARINI — & shoulder girdle. Mammalia KLIMA variation between litters, Carnivora EVANS — due to position in uterus, Carnivora EVANS vertebral column, Aves STRUDEL Vertebrata FRIANT SKIN see also Epidermis; Integument; Pigment(ation); Wound healing Anura KHAN Aves SENGEL carapace, Chelonia YNTEMA comb, experimental study, in vitro & in vivo, Aves LAWRENCE — , malformations after neural crest removal, Aves LAWRENCE contribution of various cell types, Aves MAUGER cutaneous nerve pattern, effect of X-rays, Aves MAUGER derivatives, differentiation, in vitro, Aves, Rodentia KOLLAR — , electron microscopy & biochemistry, Aves, Rodentia KISCHER dermatoglyphics in congenital malformations. Homo DZIUBA dermis & epidermis, sensitivity to hydro- cortisone, Aves ZUST differentiation, suppression & stimulation, Aves, Rodentia KOLLAR ecdysis, Reptilia LYNN effect of hormones, Anura, Rodentia HANKE hydrocortisone, Aves ZUST prostaglandins, Aves, Rodentia KISCHER X-rays, Aves REYSS embryonic, RNA synthesis, Aves, Rodentia SORIANO epidermal differentiation, cell renewal, Rodentia RIECK epithelial-mesenchymal interactions, histo- chemistry, Aves, Mammalia RITSCHARD fetal, carbohydrate & intermediate meta- bolism, enzymes. Homo SERRI — , histochemical changes. Homo CERIMELE — , morphology & physiology. Homo SERRI — , mucoproteins. Homo GIANETTI glands, Anura KOLLROS — , metamorphosis, histochemistry, Anura FRASCHINI — , thyroxin control, Anura VANABLE hypersensitivity reactions, Anura, Homo, Rodentia FORTAK innervation, effect of X-rays, Aves SAXOD light & electron microscopy, Teleostei KREJSA LUSE Marsupialia LYNE metamorphosis, with & without extra thyroid hormone, Anura BOVBJERG regional determination, Anura KOLLROS — specialization, Aves RAWLES scales, mesoderm-ectoderm interaction, '^ves GOETINCK sensory corpuscles, experimental study, '4vej SAXOD ultrastructure, Aves, Urodela SENGEL SKULL (& visceral skeleton) see also Chondrocranium allometric growth, Rodentia Anura Aves lUCIF PLASOTA SCHUMACHER TOERIEN biometry, Artiodactyla, Carnivora HUBER bone development, Urodela CORSIN changes caused by abnormal posture, Rodentia FANGHaNEL SCHUMACHER Crocodilia FRANK experimental morphogenesis, Aves TONNEYCK induction & morphogenesis, Aves SCHOWING jaws, effect of undernutrition, part, protein calory deficiency, Artiodactyla TONGE — , upper & lower, ossification, Homo KVINNSLAND mandible, fracture healing, effect of castration & androgens, Rodentia BERESFORD Meckel's cartilage, Homo, Mammalia FRIANT morphogenesis, Aves LIMBORGH — , experimental studies. Amphibia, Aves, Chelonia, Lagomorpha TOERIEN nasal capsule, phylogcny. Amphibia JURGENS naso-lacrymal canal, Anura YVROUD neuro & viscerocranium, Anura SWANEPOEL ocular skeleton, Aves COULOMBRE Ophidia SMIT optic fissure, closure mechanics. Mammalia LATSHAW ossification, Aves HA LB A regeneration, Carnivora KANTOROVA — , Mammalia POLEZHAEV temporo-mandibular joint, effect of hyper- vitaminosis A, Rodentia BERESFORD SLIME MOLDS see Plant embryology & morphogenesis SOMATIC MUTATIONS see Genetics SOMATIC RECOMBINATION see Cell heredity SOMITE(S) Anura LOEFFLER development & growth, Urodela MUCHMORE morphogenesis, Anura BURGESS relation to limb buds, Lacertilia VASSE role of Hensen's node, Aves NICOLET secondary origin from tail bud, Aves JELINEK self-differentiation, Aves STEDING ultrastructure, Aves G6NENQ SPERMATOGENESIS see also Gametes Acarina AESCHLIMANN GEIGY acrosome, cytochemistry, Artiodactyla OTSUKI Amphibia PICHERAL cell differentiation, Rodentia MONESI Collembola KRZYSZTOFOWICZ comparative study, Invertebrata FRANZeN cytochemistry, electron microscopy, Hydroidea STAGNI — , Teleostei HUVER diploid drones, Hymenoptera WOYKE diurnal cycle, histology, Rodentia TIBA effect of prolactin, Rodentia BARTKE X-irradiation, Mammalia KOCHAR electron microscopy & biochemistry, Diptera KIEFER Gastropoda HADFIELD VIANEY genetic contiol, Rodentia ROSENBERG histone synthesis, Lamellibranchia, Orthoptera BLOCH immunological impairment, Rodentia BISHOP kinetics, Carnivora TIBA Mammalia HARRISON SCHUETZ mutants, Rodentia BRYAN nuclear size & DNA content, Anura LAVALLE Plathelminthes HENDELBERG Polychaeta NOYES radiosensitivity, cytological studies, Lepidoptera IWASAKI role of neural complex, Ascidiae GEORGES Sertoli cells, Rodentia BATEMAN MERKLE spermatocytes, primary, irradiation, chromosome breaks & repair, Rodentia McGAUGHEY spermatogonia, egg-like development, Urodela TEMPLE spermatogonia! population, growing animals, morphology & cell cycle times, Rodentia HUCKINS , prepuberal animals, growth & renewal, Rodentia CLERMONT ultrastructure, Collembola BYCZKOWSKA Y-chromosome function, biochemistry, Diptera HENNIG SPERMATOZOA see also Gametes acrosome, acid hydrolase, Echinoidea, Rodentia, Urodela BERTOLINI — , cytochemistry, Artiodactyla OTSUKI 293 SPERMATOZOA (contd.) — reaction, Rodentia ANDERSEN antibodies BEHRMAN apyrene, differentiation & function, Lepidoptera FRIEDLANDER — , formation, biochemistry. Gastro- poda HADFIELD capacitation, role of steroids. Mammalia HAMNER comparative study, Invertebrata FRANZeN contractile mechanisms, protein, Mammalia BISHOP effects of Ught, Mammalia NORMAN fluorescence microscopy, Lagomorpha HOLSTEIN freezing, protective effect of glycerin. Amphibia ROSTAND genetic & antigenic differences, Lagomorpha KULANGARA in vitro, effects of pH on metabolism & fertilizing capacity. Mammalia NORMAN irradiation, effect on zygote development, Lagomorpha DOTT lytic substances, Anura RAISMAN metabolism & fertilizing capacity, effect of oviduct secretions, Lagomorpha HAMNER microtubules, resistance tot high pressure, Decapoda, Echinoidea MARSLAND motility, control mechanism RIKMENSPOEL nucleotides, acid-soluble, Echinoidea ISONO phosphagens, Echinodermata YANAGISAWA position in storage organs, Hymenoptera LENSKY relation with ductus epididymidis, Homo, Mammalia HORSTMANN respiration, Amira VALDEZ transport, ductus epididymidis, Mammalia MACMILLAN — in female, Mammalia CLEWE — , Lagomorpha ADAMS tubal transport. Mammalia NOYES ultrastructure, Acarina, Chilopoda, Diplopoda BREUCKER HORSTMANN — , Aves BOONE — , normal & pathological, Artio- dactyla BIRCH BLOM — , positions in storage organs, Hymen- optera LENSKY viability, altered, causing embryo death, Artiodactyla, Lagomorpha, Rodentia ULBERG SPERMIOGENESIS see Spermatogenesis SPINAL CORD anterior horn cells, de- & regeneration following sciatic axotomy, Aves HOUTHOFF , influence of periphery, Aves DUBEY JOSHI cellular origin in regeneration, Urodela FORET centres, Anura KOLLROS effect of increase of peripheral inner- vation, Aves MITOLO electron microscopy, Rodentia VAUGHN experimental embryology, Aves STEDING histology & histochemistry, Anura NIAZI integrity, relation to morphogenesis, Aves ARCAN medulla oblongata, fibre pattern, experimental studies, Urodela JACOBSON motor column, lumbro-sacral, cell death, normal & experimental, Aves NARAYANAN myelinization, dorsal root junction. Homo BOSSY peripheral nucleus, influence of peripheral innervation, Aves DUBEY postnatal development, Carnivora, Homo FLEISCHHAUER regeneration, Lacertilia SIMPSON ultrastructure, fetus, Homo GAMBLE SPLEEN chorio-allantoic grafts, host reaction, Aves MUN early development, inductive interactions, Aves DIETERLEN graft, activity against organ-specific antigens, Anura NEWTH — , embryonic transfilter growth, stimulation by adult spleen, Aves MUN immunofluorescence. Homo IVEMARK Mammalia SPENCER regeneration, Aves, Reptilia ASNANI BONNY role in erythropoiesis, Rodentia GIOVANNINI STATIC ORGAN Cephalopoda SACARRAO functional maturation, postnatal, Carnivora MARTY STERILITY see Fertility (& sterility) STEROIDS see also Cortisone; Hormone(s) androgens & antiandrogens, effect on sex differentiation, Lagomorpha, Rodentia ELGER — , effect on fracture healing, os priapi & mandible, Rodentia BERESFORD — & estrogens, effect on accessory sexual tissues, Rodentia TATA in gonads, Aves WOODS biochemical effects, Anura LEIST corticoids in adrenals, Aves WOODS dexamethasone phosphate, effect in vivo & in vitro, Aves, Mammalia RUCH effect on genital duct in vivo & in vitro, Aves HAMILTON growth & differentiation, Vertebrata WURMBACH sexual differentiation, Teleostei ASHBY maturation of brain, Rodentia ADAMS estrogens, effect on liver regeneration, Rodentia DZIUBA gonadal. Amphibia, Mammalia SCHUETZ — , effect on uterus, seminal vesicles & prostate, Rodentia SPAZIANI — , perinatal administration, effect on sexual morphology, function & behaviour, Rodentia SWANSON — , role in sex differentiation, Aves, Rodentia NOUMURA histochemistry, gonads & adrenals, effect of hypophysectomy, Aves WOODS induction & ovalbumin synthesis, Aves PALMITER SCHIMKE metabolism in foetus. Homo, Primates AXELROD placental & foetal, Artiodactyla, Carnivora, Edentata BRINCK progesteron synthesis, placenta, perfused. Homo CEDARD role in sperm capacitation. Mammalia HAMNER sex-reversal, inhibition by antibiotics, Anura STAGNI VANNINI synthesis in gonads, Aves CEDARD STENGER immature gonads in vitro, effect of HCG, Aves CEDARD GUICHARD perfused placenta, effect of gonadotropins. Homo CEDARD — , sex differentiation, Teleostei COLOMBO testosterone, effect on ovary, Rodentia PETERS — & gestagen, effect on follicle growth, Rodentia N0RBAEK PEDERSEN STOMACH epithelium, functional differentiation, Anura FRASCHINI MANFREDI experimental morphology, Aves LEMEZ Lagomorpha DAVID organogenesis, role of inducing substances from mesenchyme, Aves MARIN regeneration & cell division, Rodentia TIMASHKEVICH SUBCELLULAR COMPONENTS centrioles, migration, oogenesis, Diptera MAHOWALD contractile filaments & other structures, involved in formation of curved structures, Aves WRENN development, molecular assembly SIMON embryonic cells, protein analysis. Amphibia MASUI endoplasmic membrane systems WERZ — reticulum, cement gland, Anura JACOB Golai complex, cell differentiation. Gastropoda DAUWALDER , oocytes, Echinoidea BOLOGNART , role in epithelial-mesenchymal interactions, cornea & limb bud, Aves, Rodentia TRELSTAD 294 influence on gene transcription, Amphibia, Gastropoda GEUSKENS lysosomes, effect of alkylating agents & irradiation, Aves TEMPEL — , enamel epithelium, Rodentia BODMAN — , resorbing tail, Aniira BODMAN — , role in cell death, metamorphosis, Anura, Hemiptera GOLDSMITH membranes, ATP-ase, brain, Aves FR6LICH SEDLACEK STASTNY microtubule, proteins, immunology & thiol- disulfide exchange, Echinoidea KIMURA microtubules, nerve tissue, bio- chemistry FRIEDKIN — , role in cell shape, columnar epithelium, Aves, Urodela BURNSIDE — , spermatozoa, resistance to high pressure, Decapoda, Echinoidea MARSLAND — , spindle, origin & protein level, Echinoidea, Echiuroidea ANDERSON mitochondria, adipose tissue, Lagomorpha, Rodentia BARNARD — , early stages, Teleostei BOULEKBACHE — , embryo, Anura LEGNAME SALOMON — , — , comparative biochemistry & ultra- structure KISTLER WEBER — , embryonic, chemical treatment, Echinoidea HEROLD enzymes, Amphibia, Aves BOELL — , flight muscle, biochemistry, electron microscopy, Hymenoptera HEROLD — , lipochondria, cultured cells, Aves BARASA — , muscle, Artiodactyla LEESON — , queens & workers, Hymenoptera REMBOLD myotube formation in vitro, Aves NISHIZU nuclear membranes, Hela cells, Anura JACOB nucleolus & ribosomes, myoblast fusion, normal & dystrophic, Aves, Homo, Rodentia PARSONS oogenesis & early development, Amphibia NEDVIDEK VILIMKOVA polysomes, Anostraca CLEGG — , Anura DECROLY ribosomes, activation at fertilization, Echinoidea MAGGIO — , Anura CASTON — , control of formation, oocyte, Echinodermata VINCENT — , hormone action & metamorphosis, Lepidoptera WYATT — in development, Anura DECROLY — , oocvte through early gastrula, Anura VAN GANSEN — , relation with myofilaments, myoblast, Aves, Homo, Rodentia LARSON — , RNA synthesis, Echinoidea MUTOLO — , structure & function during cell differentiation, Anura FORD — , synthesis control, oocytes, Orthoptera ALLEN — , — , yolk sac derived erythroid cell differentiation, Rodentia FANTONI — , translational level control, normal & hormone-induced development, Aves BERNFIELD time-lapse-microcinematography, early stages, Diptera WOLF SUBCOMMISSURAL ORGAN see Brain SUCKER see Gland(s)-adhesive SUGARS see Carbohydrate(s) SULFHYDRYL GROUPS fluctuation in non-cleaving eggs, Echinoidea DAN in eggs, UV-irradiadon, Echinoidea IKEDA inhibiting substances, effect on embryo, Arachnoidea EHN intracellular distribution, Anura NORMAN protein-bound, localization in egg, Echinoidea KYONO role in induction, Aves MULHELKAR thiol-disulfide exchange, catalysator, post- fertilization, Echinoidea KIMURA , microtubule proteins, Echinoidea KIMURA SWIM BLADDER see Lungs SYMMETRY (& asymmetry) see also Gradient(s) bilateral, determination, Aves, Pisces, Reptilia CLAVERT — , effect of temperature, histology, Anura GLADE effect of polarity on differentiation, sensory structures, nerve fibres. Amphibia HIBBARD egg rotation in utero, Lacertilia RAYNAUD major & minor, molecular basis, Vertebrata WILDE TAIL see also Regeneration (traumatic) /Ivej GOLDIE bifurcate, Lacertilia WERNER bud, origin of neural tube & somites, Aves JELINEK degeneration, electron microscopy, Anura FOX in vitro, Urodela FORD isolated, effects of thyroxine, Anura HICKEY WEBER labyrinthine mutant, Rodentia McNUTT metamorphosis, collagen fibre resorption, Anura TTO morphology, metamorphosis, Anura DE SILVA mutants, Rodentia CENTER primordium, role in body formation, Anura VACEK TEMPERATURE abnormal, effect on development, Diptera BRUST effect on diapause, Diptera BRUST egg, Teleostei WESTERNHAGEN & larva, Teleostei BRAUM embryo & larva. Amphibia DOBROWOLSKI growth and bud development, Hydroidea PARK larval growth rate, Urodela HEATH mitotic cycle, Urodela BRUGAL sex ratio, Urodela DOBROWOLSKI ultrastructure & immunomorphology of embryo, Aves CRACIUN PREDA vertebrae number, Lacertilia WERNER gradient, effect on bilateral symmetry, Anura GLADE heat generation, egg, Lepidoptera PAVE high, adaptation, Nematoda BRUN — , effect on embryogenesis, Artiodactyla, Lagomorpha, Rodentia ULBERG — , embryonic survival, Rodentia TANNER — , induction of sex reversal Anura HSU — , selection for tolerance, Nematoda LOWER hypothermia, effect on embryonic blood composition, Lagomorpha GROTE imaginal teratogenesis, Diptera HORSFALL interaction with effect of ionizing irradiation on embryo, Teleostei WADLEY WELANDER low, resistance of developmental stages, Coleoptera, Lepidoptera EIDMANN thermal stress, effect on development, Orthoptera BERGERARD , sex differentiation, Cheleutoptera BERGERARD tolerance, kidney cells in vitro, Artiodactyla HARRIS TENDON(S) see Muscle(s) TERATOGENESIS (experimental) see also specific teratogenic agents; Anomalies (early development); Drugs; Malformations; Pathology; Thalidomide Acari PIJNACKER amino acid analogues, in vivo & in vitro, Rodentia KOCHHAR aminoguanidine sulfate, Aves WATTERSON antimalarial drugs, Rodentia SULLIVAN antimetabolites, Diptera SCHARLOO — , Rodentia MERCIER TUCHMANN Anura WURMBACH 295 TERATOGENESIS (contd.) artificial sweetners, Aves VENEZIANO Aves FRITZ HORVATH MOLD WURMBACH barbituric compounds, biochemistry & ultra- structure, Aves OJEDA benzpyrene, Rodentia KENNELS bioenergetics as affected by teratogens, Aves KAPLAN blood-brain-barrier, Lagomorpha, Rodentia NAKAMURA by external medium. Amphibia ROSTAND carcinogens & other substances KUHN cardiovascular, part, trypan blue, Aves STePHAN — system, morphology, histochemistry, organ culture, Rodentia MONIE central nervous system, Aves ALEXANDRU centrifugation of eggs, effect of temperature, Diptera YAJIMA chemicals, Aves, Mammalia GABRIEL — , cleft palate, Lagomorpha, Rodentia WALKER — , effect on blastogenesis. Mammalia DEGENHARDT — , heart, Rodentia ADAMS — , in vitro, Rodentia GUNBERG — , interaction with mucopolysacchaiide synthesis, Rodentia LARSSON — , effect on placental function, bio- physics, histochemistry, autoradiography, electron microscopy, Rodentia KERNIS — , pre-implantation stages, in vivo & in vitro, Rodentia MITCHELL — , relation to mechanism of cleft palate formation, Rodentia MILLER — , Rodentia HOSHINO KAMEYAMA cleft palate, bio- & histochemical effects of teratogens, Rodentia MILLER , effect of chemicals, Lagomorpha, Rodentia WALKER , possible reduction of incidence, Rodentia MILLER , role of sulfated mucopolysaccharides, uptake of tritiated thymidine, Rodentia COLEMAN CO2 & O2 pressure increase, Lagomorpha GROTE cortisone, antimitotics, Aves, Mammalia CLAVERT — , thymus. Mammalia ROSS drugs, Aves, Mammalia GEBHARDT early stages, Aves SANDOR effect of drugs on chromosomes, Lagomorpha, Rodentia ROUX external factors, Aves MENKES fluoro-deoxy-cytidine, effect on skeletal muco- polysaccharides, Rodentia KLEINEBRECHT galactoflavin, Rodentia SHEPARD heart, Aves BIESENBEEK DRUKKER LAANE LOS heavy metals, Rodentia PERM Homo SINGH hormones, Aves, Rodentia VAN DETH hydrocortisone, early changes, Aves, Rodentia JURAND hypervitaminosis A, Rodentia KNUDSEN hypoglycemic sulfamides, Rodentia MERCIER TUCHMANN hypothermia, Lagomorpha GROTE hypovitaminosis D, Aves KARB hypoxia, biochemical analysis, Aves GRABOWSKI — , spina bifida, Rodentia LENDON imaginal, by thermal stress, Diptera HORSFALL in explanted embryo, Aves KLEIN in vitro, Rodentia KAITILA LAHTI SAXEN SHEPARD TANIMURA inhibition of nucleic acid and protein metabolism, Aves PIERRO inhibitors of cholesterol synthesis. Primates, Rodentia ROUX insulin & oter chemical compounds, Aves LANDAUER isozymes as affected by teratogens, Aves JOHNSON Lagomorpha, Rodentia STAPLES hmbs, Aves SALZGEBER — , nitrogen mustard, thalidomide, Aves, Mammalia SALZGEBER FRITZ LUTWAK SELLER WOOLLAM maternal hemorrhages, Lagomorpha GROTE — metabolic status, Lagomorpha, Rodentia GOTTSCHEWSKI medicinal plants, Lagomorpha, Rodenia PERSAUD Mg deficiency, inner ear, Rodentia ASLING muscle relaxants, Rodentia JACOBS nervous system, irradiation, asphyxia WENDER , morphology, histochemistry, organ culture, Rodentia MONIE , Rodentia SCHLuTER neural epithelium, nuclear migration, autoradiography, Aves CORLISS neuropleptic drugs. Mammalia MERCIER organogenesis, Rodentia ZIMMERMANN paramino-benzene-sulfamide, Aves MARTIN PGA deficiency, face & palate, Rodentia ASLING Phasmidopiera PIJNACKER phocomelia, experimental, Rodentia KOCHHAR poisons, Axes RUCH pyrimethamine. Mammalia COLEMAN reduced atmospheric pressure, Lagomorpha GROTE , Rodentia KAMEYAMA relation with fluid & electrolyte balance Aves, Mammalia GRABOWSKI Rickettsia, Rodentia GIROUD MARTINET RNA-se, Aves LANOT Rodentia CSABA HORVATH MOLD PACKER ToRo role of physiological & induced necrosis MENKES rumpless phenocopy, Aves GOLDIE spinal malformations, induced by 6-aminonicotinamide, Rodentia NOGAMI Teleostei WURMBACH TEM, interaction with Polydactyly gene, Rodentia KOCHER thalidomide, Homo LENZ therapeutical use of metabolites & anti- metabolites, Rodentia CHAMBERLAIN time-lapse cinematography of embryo, Aves GRABOWSKI tissue antibodies, Aves, Rodentia McCALLION Triton WR 1339, Mammalia ROUSSEL trypan blue, Aves LANOT , heart malformation, genetics & development, Rodentia WITHERS , Mammalia BECK , Rodentia KNUDSEN , spina bifida, Rodentia LENDON Turbellaria T6R6K ubiquinone in ovo & in vitro, Aves MUSY ulu-aviolet irradiation, Diptera YAJIMA urogenital system, morphology, histo- chemistry, organ culture, Rodentia MONIE various drugs. Mammalia SOMERS WARD , thalidomide, Lagomorpha, Rodentia, Urodela JONSSON Veratrum, inducing cyclopia, Artio- dactyla EVANS Vertebrata MARTIN T6R0 virus, Aves ROBERTSON vitamin A, thymus, Mammalia ROSS vitamins, fat-soluble, Aves ABRAMOVICI X-irradiation, Rodentia McGAUGHEY TERATOLOGY see Anomalies (early development); Malformations TERATOMA(S) blastomas. Homo cell culture. Mammalia compaiison with early normal stages, Homo dysembryomas. Homo embryomas. Homo extra-embryonic structures, Homo homo- & heteroplastic, experimental production, A ves, Rodentia testis, Rodentia GAILLARD EVANS WEISS GAILLARD GAILLARD GAILLARD GAILLARD SALAUN STEVENS 296 TESTIS antigens, specific, Rodentia AWATTA cell differentiation, cell interactions & cell cycle, DNA, in vitro, Aves LEE descent, histology, biochemistry, tissue culture. Mammalia WENSING effect of X-rays, Rodentia BATEMAN enzymes. Mammalia BISHOP experimental inversion into ovary, female hormone secretion, Crustacea CHARNIAUX gubernaculum testis & testicular descent, Mammalia BACKHOUSE Homo HOLSTEIN Insectivora ABRO larval, DNA synthesis in mitosis, Diptera PAPACONSTANTINOU Leydig cell tumour, culture & functional capacities, Rodentia POURREAU — cells, biochemistry, effect of prolactin Rodentia BARTKE Mammalia SCHUETZ pathology, Artiodactyla BLOM pigmentation, genetic control & development, Lepidoptera GOTTLIEB radiation sensitivity, Rodentia RUGH regeneration, Anura MAJORCA Sertoli cells, Rodentia BATEMAN spermatogonia! deficiency, Klinefelter syndrome. Homo MIKAMO THALIDOMIDE effect on chromosomes, Lagomorpha, Rodentia ROUX development, Aves SPIROFF embryo, Lagomorpha, Rodentia, Urodela JONSSON embryopathy in relation tot time of intake, Homo LENZ inhibition of bone induction RINALDI SCHREIBER limb malformations, Aves SALZGEBER teratogenesis, Primates HENDRICKX THEORETICAL BIOLOGY (developmental) automata & language theory, developmental instructions for cell interaction & division LINDENMAYER biomorphosis PFLUGFELDER computer analysis of cell replication & nuclear degeneration, eye lens, Aves LEVER MODAK UPPULURI — simulation, branching filaments. Algae, Fungi LINDENMAYER of biological patterns COWE WADDINGTON colony growth, Hydroidea BRAVERMAN cybernetic developmental model systems POHLEY developing systems, ordering in time & space COHEN factorial analysis, as applied to morpho- genesis, Rhynchora PONTIER genetical differentiation, mechanism NOTO information theory, application to oogenesis & embryonic development RAVEN probabUstic processes, role in cellular differentiation, Aves, Rodentia WILDE systems analysis of colony pattern, Hydroidea BRAVERMAN THORACIC CAVITY see Body cavities THYMUS embryonic, extract, effect on tolerance of transplanted tissues, Rodentia CZAPLICKI effect of teratogens, Mammalia ROSS histochemistry & ultrastructure, in vivo & in vitro COMOGLIO immunofluorescence. Homo IVEMARK inductive role in immune reaction development. Rodentia SIDKY organ culture, Aves FOOTE THYREOSTATIC AGENTS see Thyroid gland THYROID GLAND see also Thyroxine antithyroid compound, effect in vivo & in vitro, Aves, Mammalia RUMPLER PRAHLAD before & after metamorphosis, Vrodela deficiency, effect on metamorphosis, Anura BOSCH WITZ early development, Amniota, Homo SLIPKA effect of aureomycin, larva, Anura LIANG hemisphercctomy, Rodentia AZOUBEL CRUZ lUCIF prolactin, late larva, Anura BRUNO CAMPANTICO GIUNTA GUARDABASSI OLIVERO RINAUDO electron microscopy, Aves HILFER embryonic, dissociated cells, stability of differentiation, Aves HILFER — , physiology, Vertebrata MARAUD experimental study, Aves LE DOUARIN function, Cyclostomata WATERMAN functional delopment, organ culture, Homo SHEPARD hypo- & hyperthyroidy, effect on pro- & mesonephros grafts, Anura FOX organic iodine compounds, Chelonia DIMOND regeneration, morphogenesis, Rodentia WROBLEWSKI relation to hypophysis, Aves THIEBOLD spinal cord regeneration, Urodela MOULTON role in allometric growth, Rodentia CRUZ lUCIF limb regeneration, Anura NIAZI — of hormones in development, Aves THESINGH structure & function, Vertebrata WATERMAN thyreostatics, mechanisms, Vertebrata PFLUGFELDER thyroidectomy, larva, ageing, Anura HSU — , — , effect of aureomycin, Anura LIANG — , — , on growth & pituitary of adult, Anura YU — , — , nitrogen excretion, Anura HSU ultrastructure, Vertebrata PEHLEMANN Vertebrata LEBLOND THYROXINE biochemical effects, embryo & adult, Urodela PRAHLAD effect on growth & differentiation, Vertebrata WURMBACH isolated tail, Anura HICKEY WEBER limb-bone rudiments in vitro, Aves LAWSON regenerative capacity, larva, Anura VAN STONE regeneration, Anura KOLLROS metamorphosing skin, Anura BOVBJERG mitosis, central nervous system. Amphibia BAFFONI mitotic cycle, Urodela BRUGAL pigment cell differentiation, Anura ANDREW GABIE induction of metamorphic competence in early stages, biochemistry, Anura TATA metamorphosis, Anura TATA in liver, biochemistry, Anura COHEN mechanism of action HART WIG metamorphosis, local action, Anura KALTENBACH relation with RNA synthesis, tadpole, Anura STADLER WEBER role in skin gland development, Anura VANABLE sensitivity of embryonic tissues, Urodela PRAHLAD tissue competence to, larval, Anura YU uptake & localization in tissues during metamorphosis, Anura REYNOLDS TISSUE(S) competence to thyroxin, Anura YU differentiation, in vitro, relation to develop- mental potential & stage, Lepidoptera BROOKS extracts, inhibitory effect on homologous organs, Aves THOMPSON homogenates adult, effect on early embryo & cell cultures, Aves McKENZIE interaction, comb & non-comb tissue, Aves LAWRENCE 297 TISSUE(S) (contd.) — , mammary gland, Rodentia ARMSTRONG specific proteins, Diptera, Lepidoptera IMBERSKI subcellular fractions, effect on organ growth, Rodentia STERN transformation by RNA, Aves NOTO TISSUE CULTURE (& cell culture) see also Cell(s); Culture (egg, embry'o etc.); Organ culture , surface properties & behaviour, Aves MOORES ultrastructure, effect of actinomycin D, Anura — • & other cells, formation of adhesions JONES adrenergic neurons Amtra binucleate cells, origin, Aves blastema, Turbellaria MACOTTA NADAMITSU BARASA GODINA OKUNO SUGINO blastodisc erythropoietic tissue, Aves WAIN WRIGHT blastula & gastrula cells, tissue specific enzymes, tryptophan metabolism, Anura KOSTELLOW cancer cells, effect of heavy metals, Rodentia AMONS cardiac muscle cells, dissociated by Ca++ deprivation & chelation MUIR cartilage, monolayer, comparison of different types, Aves LEVENSON — , — , effect of vitamin C, Aves LEVENSON cell behaviour, action of morphogenetic agents, Aves WESTON — changes in neural induction & early differentiation, Anura DEUCHAR — • differentiation, Aves NIIZIMA , Scyphozoa SCHMID , Vertehrata CURTIS — locomotion, Aves, Rodentia LEFFORD — motility & cell division ALLEN ■ & ultrastructure. Amphibia FREED — relations, Aves, Rodentia ABERCROMBIF HEAYSMAN PEGRUM — types, separation, Porifera NIKITIN cells, development & cytology, Diptera ALBERGHINA DOLFINI — , differentiation, relation to developmental potential & stage, Lepidoptera BROOKS — , effect of adult tissue homogenates, Aves McKENZIF. — , molecular hvbridization, Anura JOHN JONES — , neoplastic conversion, Rodentia MITCHELL chromosome patterns, Artiodactyla HARRIS contact inhibition of mitosis & cell movement STEINBERG , svnchronous fibroblast populations, Aves ' McKIEL cytochimaeras, cells of different classes, Aves. Rodentia WILDE dental tissues. Homo, Mammalia NIIZIMA development & regeneration. Annelida MARCEL differentiated cell function, maintenance in vitro SATO differentiating embryonic cells, DNA synthesis induced by virus, Aves LEE differentiation in presence of electrophoretic fractions of specific primordia & cells, Vrodela WILDE DNA replication, Diptera BARIGOZZl HALFFR drug resistance, Artiodactyla HARRIS early blastoderm, fragments, action of RNA from embryonic organs, Aves BUTROS — embryonic tissues, behaviour, Aves ZWILLING effect of age on nuclear size KRANTZ heterologous RNA on fibroblasts, Aves, Rodentia EWART SANN embryonic cells, aggregation factor, Echinoidea, Vrodela KONDO , differentiation, Vrodela BEETSCHEN DUPRAT , Diptera SANG SEECOF , effect of RNAse inhibitors on translatable RNA & proteins, Echinoidea COUSINEAU & fibroblasts, effect of Hempa, Rodentia, Teleostei JACQUES , reaggregates, segregation, mechanisms, Vertehrata CURTIS , structural changes, Amphibia MASUDA CAMPBELL EDWARDS N A KAY AM A STEPHENSON embryonic tissues, Rodentia — , under pressure, Vertehrata energy transfer in cellular interactions, Aves, Rodentia REPORTER enzyme induction & repression GUSTAFSON , Mammalia ELIASSON — proteins, relation to added DNA & RNA, Rodentia O'BRIEN — synthesis, regulation JOHANSSON — variants, genetics & epigenetics, Rodentia RUDDLE epithelial cells, locomotion & behaviour, Aves, Rodentia MIDDLETON eye lens, differentiation, Aves KATOH fibres, Anura, Vrodela YAMADA , macromolecules, Aves YOSHIDA — tissues, differentiation & metaplasia, biochemistry, Aves WHITTAKER fetal tissues, immunology. Homo ADINOLFI fibroblasts, effect of alkylating agents & chemosterilants, Rodentia PURKO — , antibodies on cell behaviour, Aves PARTRIDGE — , identification, Aves, Homo, Mammalia NIIZIMA gene expression WHITTAKER growth, accelerated MILLS heart cells, spontaneous activity, Aves DeHAAN — , maintenance of differentiation, Aves TAYLOR hepatocvtes, glucose & glycogen, Rodentia JACQUOT PIAS imaginal discs, cell heredity, Diptera GEHRING immunocompetent cells, Lacertilia MUTHUKKARUPPAN immunogenic response DU 1 ION Insecta KRAUSE iris, depigmentation control, Vrodela REESE — , RNA synthesis activation, Vrodela REESE isolated embryonic cells. Amphibia, Teleostei COUPE kidney & lung, ATPase, Rodentia WAYMOUTH larval & adult tissues, Vrodela FORET lens fibre differentiation, Aves KAWAKAMI — regenerating system, Vrodela EISENBERG limb mesenchyme, normal & mutant, behaviour & differentiation, Aves FLINT liver, Aves LEVENSON — . nuclear & cytoplasmic synthesis, Rodentia MALPOIX — & yolk sac. hematopoiesis, part, genetic expression, Rodentia FANTONI lymphocyte competence, mitogens, Aves. Rodentia VAN ALTEN mammary gland, differentiation in relation with DNA svnthesis & cell division, Rodentia STOCKDALE . Homo, Rodentia KATO material transfer from coelomocytes to oocytes, Polvchaeta SCHROEDER media, Porifera NIKITIN melanophores, pigment granule movement, Teleostei BEREITER metamorphosis, Anura NIIZIMA mitochondria & lipochondria, Aves BAR.^SA mitosis, Echinodermata KANE — , effect of cell density, y4ve5, Rodentia NJEUMA — , of low temperature, Aves BARASA GODINA morphogenesis in cell cultures. Homo ELSDALE muscle, cartilage & retinal pigment cells, differentiation in vitro, biochemistrv, Aves COLEMAN" — , cells, cvtodifferentiation, clonal analvsis. Aves KONIGSBERG , differentiation, tail regenerate, Lacertilia SIMPSON — , cytochimeric, from disaggregated cells, different tissues & classes, Aves, Rodentia MASLOW myoblast, normal & dystrophic, RNA, Aves. Homo, Rodentia JANS ROSS — , relation between myofilaments <& ribosomes, Aves, Homo, Rodentia LARSON 298 myocardial cells, interactions, Aves GORDON myogenesis, amitosis, Aves, Rodentia PUZA — , Aves, Rodentia LEVIS — , behaviour of nucleolus, Aves, Rodentia GAYER HROCH PUZA — , cinematocraphy, autoradiography, Aves, Rodentia GAYER myogenic cells, normal & dystrophic, behaviour & differentiation, Rodentia .lONES mvotube formation, Aves KYONO NISHIZU nerve cells, protein synthesis & utilisation, Aves O'BRIEN — tissue differentiation VARON nervous microsyslemes, Aves STEFANELLI neural crest, Anura ANDREW GABIE . histones & RNA, Anura ANDREW GABIE orientation of cells MILLS parotid gland, control of secretory events, Rodentia GORDON pigment cells, staging & effect of thyroxine, Anura ANDREW GABIE placenta, giant cells, aging, Rodentia DORGAN — , syncytial cells, structure & function. Homo KASPI LONDON NEBEL plasma cell, immunoglobulin synthesis, Rodentia ANDERSON pre-adult cells, effect of malignant cells, Vertebrata STEPHENSON protein growth factors, Artiodactyla HARRIS — , RNA & DNA, synthesis, embryo, Echinoidea INFANTE regeneration blastema, Turbellaria BETCHAKU MANELLI PASQUINI STAMPA , Urodela FORET regenerating tissues, Turbellaria ZILLER small aggregates, embryonic cells, Anura JONES spatial organization & supracellular patterns in embryonic tissues, Aves DeHAAN skin, cell death & differentiation, epithelial- mesenchymal interactions, ult-astructure, Anura GOLDSMITH — , cell renewal, Lacertilia MADERSON testis, DNA, cell cycle, differentiation & cell interactions, Aves LEE thermal stress, Diptera BRUST thermotolerance, kidney cells, Artio- dactyla HARRIS thyroid gland, dissociated cells, stability of differentiation, Aves HILFER teratoma cells, Mammalia EVANS WEISS testis, descent. Mammalia WENSING tissue reconstruction, Anura, Aves, Porifera STEINBERG tonofilaments, epidermis, Teleosiei BEREITER tumours associated with embryonic organs. Homo WOLFF undifferentiated cells, activity, normal & regenerating animals, Turbellaria CHANDEBOIS TONGUE see Mouth TOOTH (TEETH) autoradiography, Vertebrata control mechanisms, Rodentia cusp pattern. Homo, Rodentia dentine, ultraslructure, Teleostei development & eruption — & innervation. Homo LEBLOND FITZGERALD LAVELLE HEROLD TONGE FALIN KOLLAR differentiation, in vitro, Rodentia effect of environmental factors & anti- biotics, Rodentia FITZGERALD hypervitaminosis A, histochemistry, Rodentia DWORNIK — ■ — undernutrition, part, protein calory deficiency, Artiodactyla TONGE electron microscopy, scanning probe X-ray microanalysis, Mammalia BOYDE enamel epithelium, lysosomes, Rodentia BODMAN histochemistry & ultraslructure, Urodela ROUX Inseclivora KINDAHL Mammalia FRIANT molars, root & periodontal ligament, Rodentia BEYNON morphogenesis & cytogenesis, Rodentia POURTOIS origin & differentiation. Amphibia CHIBON periodontium, histochemistry, Rodentia COHN regeneration, Carnivora POLEZHAEV Rodentia COHN Teleostei JONGH tissue culture. Homo, Mammalia NIIZIMA TRACE ELEMENTS TRACER STUDIES see Autoradiography; Radio-isotopes TRACHEA see Respiratory tract TRACHEAL SYSTEM postembryonic, experimental study, Diptera PIHAN ST6PHAN TRANSPLANTATION see also Immunology; Nucleus Aves MULHELKAR chorioallantoic, epithelial pearls, mode of formation, Aves MARRARO — , method, Aves MARRARO — , suprarenal gland, differentiation, Aves CHEVALLIER early stages, Rodentia LEVAK SKREB SVAJGER embryonic heterografts, Aves DELEANU graft vs. host antagonism, anterior shield grafts, Teleostei BRUMMETT hetero-, Rodentia WRBA heterologous FORSBERG heterotopic, spinal cord, effect on motion & action pattern, Aves NARAYANAN homo-& xenograft acceptance, embryonic stages, Chelonia YNTEMA , tolerance comparison, Urodela TABAN immunity, genetic analysis, yoimg animals, Aves RUTH interspecific tolerance, Anura LOEFFLER liver to chorioallantois, Aves MARRARO lympho-myeloid cells, fetus. Mammalia THOMAS mammary gland, regeneration, Rodentia HOSHINO skin, graft rejection, Anura BOVBJERG spleen, activity against organ-specific antigens, Anura NEWTH — , chorio-allantoic grafts, host reaction, Aves MUN tissues, Anura, Rodentia NIIZIMA xenoplastic. Amphibia TRAMPUSCH — , hypophysis, species specificity. Amphibia BYTINSKI TROPHOBLAST see Blastocyst TUBA see Oviduct TUMOUR(S) see also Carcinogenetic agents; Teratoma(s) antigens, embryonic MASON ascites, growth promoting effects. Mammalia ARGYRIS association with embryonic organs, electron microscopy, A ves CUMINGE cancer cells, membrane protein, Aves, Rodentia GOLDHOR culture in association with embryonic organs. Homo WOLFF — on chick embryo mesonephros. Homo WOLFF embryonic organs in vitro. Mammalia SIGOT extracts of chick liver, mesonephros & yeast. Homo WOLFF differentiation in regenerating appendages, Anura ^^"^^'hk embryonic, germ cell. Homo GAILLARD histogenesis in vitro, Homo AUERSPERG induction by subcellular fractions, embryonic & larval stages, Anura TWEEDELL interaction with embryonic cells in the same host, Rodentia SALAUN Levdig cell, effect on sex reversal, Rodentia POURREAU 299 TUMOUR(S) (contd.) , functional capacities, in vitro, Rodentia POURREAU Lucke, virus induced, role of nucleolus, Anura JACOB lymphosarcoma, Anura ARTHUR BALLS — cells in vitro, effect of heavy metals, Rodentia AMONS malignant cells, effect on pre-adult cells, Vertebrata STEPHENSON — & normal cells, growth control, in vitro KIRSTEN — transformation by virus KIRSTEN melanotic, genes, effect on development, Diptera SANG mitotic rate, Rodentia BERTALANFFY mycetomes, embryonic, Homoptera SANDER neoplasia, etiology, Anura NACE neoplastic conversion of embryonic cells, in vitio, Rodentia MITCHELL of mesonephric derivatives of female genital tract. Homo SZAMBORSKI organ culture, long term. Homo WOLFF organotypic culture, nutritional aspects MASON physiology, Rodentia JAMES relation with immunocompetence, Amphibia RUBEN renal carcinoma, differentiating, histochemistry & fine structure, Rodentia GIBLEY Rous sarcoma virus, fibroblast transformation, Aves TEMIN testicular interstitial cell, effect on prostate, in vitro, Rodentia POURREAU , organ & suspension culture, Rodentia POURREAU tolerance, effect of embryonic thymus extracts, Rodentia CZAPLICKI transplantation into embrj'o, Aves LAKSHMI SHERBET Turbellaria T6R6K Urodela BRUNST virus induced chromosome aberrations, Homo MAKINO — , infectious nucleic acids as differentiating agents, Anura MIZELL viruses, as tools in embryology, Aves EBERT HAY YOSHIKAWA TWINS (& other multiple births) experimental, Rodentia FERM incidence, Chelonia YNTEMA longitudinal study, placental morphology & zymograms, bloodtyping. Homo THIERY multiple births, development & immunology. Homo VOLKOVA , placental vessels, Homo VARMA uniovular, genotype. Homo DEROM ULTIMOBRANCHIAL BODY ULTRASOUND ULTRAVIOLET IRRADIATION early development, levels of control, Echinoidea RIECK effect on cleavage & morphogenesis. Gastropoda LABORDUS embryo, Diptera YAJIMA germinal cytoplasm, Anura CZOLOWSKA limb development & regeneration, Urodela BUTLER re-entry of pole cells, Diptera YAJIMA egg inactivation, Hymenoptera L6BBECKE microbeam, applied to embryo, Hymenoptera AMY — , egg cortex. Gastropoda JURA SH radicals in eggs, Echinoidea IKEDA UMBILICAL CORD architecture. Homo REYNOLDS collagenogenesis. Homo UYSAL relation with fetal size. Mammalia NAAKTGEBOREN sphincter, Lagomorpha TAVERNE umbilical vesicle, vascular anatomy, physiology, Rodentia LE GOASCOGNE UNICELLULAR ORGANISMS anucleate cells, RNA synthesis. Algae breeding system, Ciliata SCHWEIGER KATASHIMA cell cycle, developmental changes & enzyme synthesis, Saccharomycetales MITCHISON cell-to-cell adhesion, Rhizopoda BAND chloroplasts, autonomy. Algae SCHWEIGER — , effect of light & chemicals, Euglenophyceae CARELL conjugation & polytene chromosomes in exconjugants, Ciliata RADZIKOWSKI control of morphogenesis & differentiation, Amoebina KAHN cooperation between subcellular components. Algae SCHWEIGER cortex, removal, Ciliata TARTAR cortical variations, genetic & developmental studies, Ciliata NANNEY cytokinesis, studied by microsurgery, Ciliata TARTAR cytomorphogenesis, ultrastructure, Desmidiaceae KIERMAYER developmental genetics, mating type, Ciliata BUTZEL — pattern, Desmidiaceae KIERMAYER differential gene activating, germinating spores. Bacteria STUBBS differentiation, immunogenetics, Ciliata FINGER — & polyploidy, Opalina KACZANOWSKI — , synchronous, Ciliata CAMERON DNA polymerase, relation with cell cycle, Ciliata WESTERGAARD replication in synchronized cells, Ciliata ANDERSEN — & RNA synthesis, Ciliata RADZIKOWSKI — , transforming, in germinating spores, UV-resistance, Bacteria IRIE flagella & basal bodies, ameba - flagellate transformation. Protozoa FULTON gene action in clonal cultures, Ciliata NANNEY growth & development, changes in different media, Euglenophyceae WAIDYASEKERA — , sexual & asexual reproduction, physiology & biochemistry, Volvocales JONES — , ultrastructural changes, Conjugales PERRY WADDINGTON heat shocks, morphogenetic effects, Ciliata TARTAR intracellular parasite, nucleic acids, Sporozoa LYTLE hfe cycle in host under normal & abnormal conditions, Opalina KACZANOWSKI light regulated development, Chlorophyceae KLEIN macromolecules, synthesis in relation to ceU cycle, Ciliata CLEFFMANN membrane mediated control of behaviour, Rhizopoda BELL metabolism, various phases of life cycle, Euglenophyceae NIGON Microsporidia KRAMER morphogenesis, autoradiography, Ciliata DE TERRA — , Ciliata FRANKEL — of division & regeneration, cortical organelles, morphogenetic movements, Ciliata KACZANOWSKA — , experimental, Ciliata DE TERRA — , relation to encystment, Ciliata HASHIMOTO — , Testacea NETZEL morphogenetic changes due to difference in food, Amoebina WAIDYASEKERA motility & cell division, Sarcodina ALLEN mouthparts, induction, Ciliata TARTAR multicellular body formation, Chloro- phyceae, Diatomeae IWASA nucleic acids, Euglenophyceae HEIZMANN nucleo-cytoplasmic relationships, Algae HaMMERLING , biochemistry, Algae SCHWEIGER , changes during cell cycle, Rhizopoda BELL , Ciliata GIBSON DE TERRA ontogenesis & regeneration, Protozoa TOKIN oral apparatus, electron microscopy, Ciliata WILLIAMS — structures, experimental study, Ciliata HANSON organelle formation during fission cycle, Ciliata JURAND organelles, development & role in teratogenesis, Chiliata BUTZEL polarities, conflicting, after rotation of cell halves, Ciliata TARTAR 300 population patterns, Ciliata, Euglenophyceae SPRATT protein synthesis in regenerating cilia & flagella, microtubules, Ciliata, Volvocales ROSEN BAUM , synchronized cultures, Ciliata IKEDA regeneration, electron microscopy, Ciliata NILSSON reproduction & development, Sporozoa DASGUPTA ribosome formation, Ciliata PLESNER RNA synthesis. Algae DILLARD sexual differentiation & recombination, Chlorophyceae, Diatomeae IWASA spore formation & germination, induction, regulation, m-RNA, proteins, Myxo- bacteria DWORKIN trophont growth, microtubule synthesis, growth abnormalities, Opalina KACZANOWSKI URETER see Urogenital system URINARY BLADDER see Urogenital system URINARY SYSTEM see Excretory system UROGENITAL SYSTEM see also Excretory system; Genital tract; Reproductive system anomalies, Rodentia ALLISON Anura KHALIL MICHAEL SEDRA bladder, morphology & histochemistry, Chelonia GERZELI experimental studies, Rodentia MADJEREK induction. Amphibia, Aves LEPORI malformations, gene-conditioned, Rodentia GUMBRECK relations between genital & excretory system, Anura CAMBAR teratogenesis, Rodentia MONIE urogenital connections & cloaca, Lacertilia PIEAU UTERINE TUBE see Oviduct UTERUS capacity, Artiodactyla contraction patterns. Homo circulation, Primates ROBISON REYNOLDS MARTIN PANIGEL decidua parietalis & capsularis, histo- & cytochemistry. Homo VARMA effect of hormones, Rodentia SPAZIANI endometrium, interaction with trophoblast, Lagomorpha, Rodentia MORETTI — & myometrium, DNA synthesis, Rodentia BACCARINI REZENDE SCHREIBER — , role in feto-maternal relationships, Homo BAVEJA VARMA pregnancy changes in vascular system, Rodentia ORSINI relation to fetal growth, Mammalia NAAKTGEBOREN secretions. Mammalia ECKSTEIN stroma of mucosa, developmental pathology, Homo SZAMBORSKI structural development. Homo STEDING tissue reactions to foreign materials. Mammalia ECKSTEIN VAGINA see Genital tract VASCULAR SYSTEM (& vascularization) see also Circulation; Heart (& great vessels) brain, descriptive & experimental study, Aves BURDA — & head, malformations, Rodentia BUGGE KNUDSEN — , pericentricular, Rodentia BUGGE branchial arches, experimental morphology, Aves PEXIEDER extremities. Homo, Mammalia MAZHUGA fetus, physiology, Homo, Mammalia REYNOLDS functional aspects, Anura KUYEN histogenesis. Homo, Mammalia MALYUK . . MAZHUGA jomt capsule. Homo, Mammalia MAZHUGA lung, fetal & neonatal, Artiodactyla, Rodentia REYNOLDS malformations, experimental, Aves, Homo, Mammalia KREDIET — , teratogenesis, part, trypan blue, Aves STePHAN physiology, part, action of vasoactive substances & respiratory gases, Aves GIRARD placenta, relation to physiological exchange, Artiodactyla, Perissodactyla STEVEN placental vessels, toxemia, malformations, multiple births. Homo VARMA polysaccharides, localization. Homo LHOTKA radiation effects STEARNER regeneraUon, Aves, Homo, Mammalia KREDIET stapedial artery, Rodentia BUGGE teratogenesis, Rodentia MONIE toxicity of Oo, Aves KELSO umbilical circulation. Primates MARTIN vascular wall, cellular & fibrillar structures. Mammalia MALYUK venous system, Amniota KOCOVA vertebrae, Cetacea SINCLAIR VASCULARIZATION see Vascular system VEGETATIVE GRADIENT see Gradients see also Embryology (experimental); Embryology (physiological) VEGETATIVE NERVOUS SYSTEM see Autonomic nervous system VERTEBRAE (vertebral column) Dipnoi FRANCOIS effect of chemical treatment at gastrula stage, Urodela MAUGER temperature on number, Lacertilia WERNER Homo HUSON Lacertilia WERNER vertebral cartilage, ultrastructure, A'^es STRUDEL Vertebrata SHUTE Teleostei FRANCOIS VIRUS(ES) action on development. Mammalia HOLLAND as tools in embryology, Aves EBERT HAY YOSHIKAWA causing abnormalities, Aves ROBERTSON in gestation, Rodentia ROUX inducing abnormalities in embryo, Homo KOSKIMIES SAXEN induction of cerebellar hypoplasia & hydrocephalus, Carnivora, Rodentia MARGOLIS infection of blastocyst, Lagomorpha FLAMM infectious nucleic acids as differentiating agents, Amira MIZELL interaction with differentiating cells, Carnivora, Rodentia MARGOLIS embryo, Aves TAHARA plant, vectors, Homoptera KISIMOTO Rous sarcoma, fibroblast, transformation, Aves TEMIN , induction of DNA synthesis, Aves LEE rubella, effect on foetus. Homo SHEPARD VISCERA VISCERAL SKELETON see Skull (& visceral skeleton) VITAL STAINING yolk, A gnat ha, Holostei GRODZINSKI VITAMIN(S) A, causing limb malformations, Rodentia NOGAMI — , effect on development & regeneration, Anura, Aves NIAZI — , hypervitaminosis, effect on fetus, Rodentia AZOUBEL — , hypervitaminosis, effect on teeth, Rodentia DWORNIK 301 VITAMIN(S) (contd.) — , hypervitaminosis, effect on temporo- mandibular joint, Rodentia BERESFORD — , teratogenesis, Rodentia KNUDSEN B, eye reaction, Anura BER Bi", effect on liver regeneration, Rodentia CRACIUN C, effect on cartilage in vitro, Aves LEVENSON D, deficiency, Aves KARB D2, hypervitaminosis, effect on placenta, Rodentia NEBEL — , toxicosis & pregnancy, Rodentia ORNOY fat-soluble, teratogenic effect, Aves ABRAMOVICI VITELLINE MEMBRANE see Egg(s) VITELLOGENESIS see Oogenesis WATER balance, hormonal control, Aves THOMMES medium without, effect on embryo & perivitelline fluid, Teleostei DOMURAT relations in haploid embryos TUFT uptake & distribution in embryo, Anura, Mammalia TUFT WING(S) bud, mesoderm, regulation, Aves DUBEY PATIL development, immunogenesis, Diptera SEIGER experimental morphogenesis, Aves BARASA imaginal disc, Diptera, Lepidoptera GOTTLIEB interaction with leg, xenoplastic chimaeras, Aves PAUTOU morphogenesis, ectoderm-mesoderm relations, Aves AMPRINO CAMOSSO polymorphism, Homoptera KISIMOTO regulation, Aves AMPRINO scales. X-ray induced somatic mutations, Lepidoptera PENTZ scalloping mutant, somatic recombination & clonal analysis, Diptera SANTAMARIA skeleton. X-ray analysis, Aves GOFF WOLFFIAN DUCT see Urogenital system WOUND HEALING coUagenase, characteristics & function. Mammalia GRILLO cutaneous wounds, histo- & cytochemistry, Rodentia SCHMIDT early phases, electron microscopy, Anura LUCKENBILL electron microscopy, Anura BAKER enzymes, biochemistry, Rodentia MaKINEN RAEKALLIO general KUHN granulation tissue, cytology, Rodentia BARTOS hair growth stimulation. Mammalia ARGYRIS mucopolysaccharides & collagen. Mammalia WATTS origin of cells. Mammalia WATTS Reptilia MADERSON role of Mn, Mammalia WATTS tonofilaments in epidermis, Teleostei BEREITER XANTHOPHORES see Chromatophore(s) X-IRRADIATION see also Irradiation; Radiomimetic agents chromosome aberrations, Mammalia LEONARD digital malformations, Rodentia NOGAMI effect on adult morphogenesis, Polychaeta SOLBANI — — brain. Mammalia SCHAD6 central nervous system, Mammalia BERRY cutaneous nerve pattern, Aves MAUGER determination of moulting, Lepidoptera COULON development, aging & longevity, Diptera ROCKSTEIN early organ primordia, Rodentia DEGENHARDT eggs, nucleus & cytoplasm, Diptera ULRICH embryo, Aves, Urodela REYSS , Diptera ULRICH , Lacertilia PIEAU RAYNAUD & larva. Amphibia DOBROWOLSKI , Rodentia McGAUGHEY female germ cells. Primates, Rodentia BAKER growth & regeneration, Urodela VERWOERD iimervation, skin, Aves SAXOD intestine, biochemistry, Aves GASC ■ offspring, chromosomal aberrations, Urodela JAYLET oogenesis & ovulation, Rodentia SMIT TRAMPUSCH regeneration, Asteroidea HUET , Polychaeta BAUTZ skin, Aves REYSS spermatogenesis. Mammalia KOCHAR spinal pterylae, Aves MAUGER testis, Rodentia BATEMAN influence on induction, gastrula, Urodela REYSS low, acute doses, effect on early development, Teleostei WELANDER gametes through pupae, influence of developmental stage, chromosome con- figuration & specific genes, Diptera WiiRGLER germ cell destruction, Anura DI GRANDE radio-embryology, various problems, Mammalia RUGH spermatocytes, chromosome breaks & repair, Rodentia McGAUGHEY sublethal doses, effect on various stages, Teleostei WELANDER YOLK see also Nutrition albumen, developmental factors for retinal pigment formation, Aves HARRISON artificially formed by DNAse, biochemistry, Echinoidea BOLOGNARI formation & cytochemistry, Teleostei DONATO — , Echinodermata CANNATA — , effect of intracellular microorganismen, Dictyoptera BROOKS — , electron microscopy, histochemistry, Aves BELLAIRS ENGLAND — , relation to nucleolus behaviour & vitelline membrane, Crinoidea, Teleostei ALBANESE hemolymph proteins, Orthoptera KUNZ in blastoderm cytoplasm, biochemistry, part, yolk DNA, Aves BRUCE EMANUELSSON morphogenetic function, Teleostei, Urodela IGNATJEVA morphology.Cfljfropoda FIORONl nucleic acids, Aves NONAMI origin. Gastropoda HADFIELD osmotic properties, Agnatha, Holostei GRODZINSKI platelets, Anura KARASAKI — , ultrastructure, Agnatha, Holostei GRODZINSKI — , — , Teleostei BOULEKBACHE protein synthesis, transport & composition, Crustacea, Vertebrata WALLACE proteins, biochemistry, Cheleutoptera, Orthoptera KOCH — , — , Teleostei YAMAGAMI relation tot DNA, oogenesis & early stages, Polychaeta EMANUELSSON synthesis & deposition BEAMS , radio-isotope study, Insecta ENGELS system, changes of protein pattern, Coleoptera ^"TS.^ ultrastructure, Holostei KILARSKJ utilization, biochemistry, Amphibia, Teleostei ^^? vital staining, Agnatha, Holostei GRODZINSKI YOLK SAC see Embryonic membranes 302 Communications from the HUBRECHT LABORATORY I The scientific staff In June 1969 an eleventh member joined the staff: Mr. S. W. de Laat, M.Sc. He will be in charge of the new research unit of developmental biophysics. With his arrival the scientific staff is complete, and the space available for research units in the Laboratory is fully occupied. Mr. J. A. Leussink, M.Sc, who served the Laboratory as its Administrator through a long series of years, left the Laboratory on October 1st. The vacancy will be filled in 1 970. II Annual Scientific Report It has been decided henceforth to publish an annual scientific report in English. The report will be printed by the Royal Netherlands Academy of Sciences and Letters, and will be distributed on a large scale in the form of a reprint. The report for 1968 is fortcoming. III The international team project The seventh international team in embryology will most probably meet in the first half of 1972, The subject has not yet been fixed. A circular pertaining to the team will be distributed at least 1 h^ year in advance. IV Foreign guests Most of the guests who worked at the Laboratory in 1969 were already there in the preceding year, and their research subjects were listed in the Supplement to the twelfth issue of this periodical, 1 968. Dr. J. G. Hollyfield (Austin, Tex.) left in August after a stay of two years. The four members of the sixth international team who had stayed on after July 1968, Dr. R. Adler (Buenos Aires), Dr. M. B. Burnside (Austin, Tex.), Dr. L. Luckenbill (Boston, Mass.), and Miss S. Sudarwati (Bandung, Indo- nesia), all left during the second half of the year. Dr. N. Nikitin (Leningrad) left in April, Dr. R. W. Glade (Burlington, Vt.) in May, and Dr. I. Slaby (Plzen, Czechoslov.) in August. Mr. C. F. A. Rosa, M.Sc. (Sao Paulo, Brazil) stayed at the Laboratory troughout the year, carrying out an experimental study of pattern formation in the presumptive prosencephalon of urodeles in collaboration with Dr. E. C. Boterenbrood. Dr. W. P. Luckett (Madison, Wis.) stayed at the Laboratory from May till July to work in the Central Embryological Collection (early mammalian placen- tation). Dr. M. Klima (Brno, Czechoslov.) worked in the Collection for two weeks during November (development of the sternum in monotremes and marsupials). Dr. K.-I. Sirakami (Yamanashi Univ., Kofu) visited the Labora- tory for three weeks during August and September, mainly to use the Central Embryological Library. V Facilities for international use These facilities comprise the Central Embryological Collection, and the Central Embryological Library, with its extensive reprint collection and its bibliographical and copying services. Details pertinent to these facilities may be found in the information booklet distributed on a large scale in 1966. This booklet is available on request. A special leaflet describing the Central Em- bryological Library and its facilities is also available on request. 303 Communications of the INTERNATIONAL SOCIETY OF DEVELOPMENTAL BIOLOGISTS (formerly I.I.E.) (Developmental Biology Section of the I.U.B.S.) The I.S.D.B. announces with deep regret the death of its emeritus member A. Kiihn (Tiibingen), and of its member K. Bier (Miinster). In accordance with the decision taken by the latest General Assembly the I.S.D.B. is sponsoring a number of small Workshops on important problems in developmental biology to be held in different parts of the world. Attendance will be limited by invitation to a small group of participants, but will also be open to a number of local observers. The first of these Workshops was devoted to "Morphogenetic tissue inter- actions" and was held on September 2 — 4, 1969 in Helsinki, Finland. Dr. L. Saxen was chairman of the local organizing committee.There were 32 parti- cipants from 14 countries, and 14 local observers. The Ministry of Education of Finland acted as co-sponsor. Several other Workshops are in the active planning stage. At present the I.S.D.B. has 454 members; 139 new members were accepted by the Board in 1969. A complete membership Hst is given below. The Board should like to see the membership become [ully representative o[ developmental biology, and therefore earnestly solicits proposals as well as spontaneous appli- cations for membership. The procedure is as follows: a) Candidates for membership can be proposed or supported by two members at any time. The Board screens the applications once or twice a year, and decides about acceptance by simple majority of votes among its members. b) The requirement for membership is that the candidate should have made a substantial contribution to the field of developmental biology. The Board decides whether a particular applicant meets this standard. c) Proposals must be accompanied by a curriculum vitae and a list of publica- tions of the candidate, and should be sent either to Prof. E. Zwilling, Dept. of Biol., Brandeis Univ., Waltham, Mass. 02154 .U.S.A., or to Prof. P. D. Nieuw- koop, Hubrecht Laboratory, Uppsalalaan 1, Universiteitscentrum "De Uithof", Utrecht, Netherlands. Composition of the Board of the I.S.D.B. { 1 968—1 973 ) President A. Monroy, Italy Past President Et. Wolff, France Secretary-Treasurer E. Zwilling, U.S.A. Vice Presidents L. Gallien, France E. Hadorn, Switzerland T. Yamada, U.S.A. Members M. Abercrombie, U.K. J. D. Ebert, U.S.A. }. J. Pasteels, Belgium L. Saxen, Finland Adj. Secretary-Treasurer P. D. Nieuwkoop, Netherlands 304 Membership List of the I.S.D.B. (alphabetical order, with years of election; * emeritus members) This list was drawn up on December 1st, 1969. For full addresses see "General Embryological Information Service", thirteenth issue, 1969 and supplement, 1970. Miss U. Abbott. Washington. D.C., '64 M. Abercrombie, London, Eng., '56 H. B. Adelmann*. Ithaca, N.Y.. '48 B. A. Afzehus, Stockholm, '64 I. P. S. Agrell, Lund, '60 K. Aketa. Nagoya, '70 J. F. Albright. Oak Ridge, Tenn.. '69 R. D. Allen, Albany, N.Y., '57 E. C. Amoroso, London, Eng., '60 R. M. Amprino. Bari, '60 E. M. Anderson, Amherst, Mass., '69 G. Andres. Mainz, '57 Th. S. Argyris, Syracuse, N.Y., '70 J. Ariens Kappers, Amsterdam, '60 H. L. Arora, '64 B. L. Astaurov, Moscow. '56 R. Auerbach, Madison, Wis., '70 C. R. Austin, Cambridge, Eng., '57 M. Avel, Talence, '48 C. Baglioni, Cambridge, Mass., '69 J. T. Bagnara, Tucson, Ariz., '67 B. I. Balinsky, Johannesburg, '48 W. W. Ballard. Hanover, N.H., '70 F. Baltzer*. Bern, '48 C. Barigozzi, Milano, '60 H. J. Barr, Madison, Wis., 70 L. G. Barth, Woods Hole, Mass.. '48 Mrs. L. J. Barth, Woods Hole, Mass., "69 R. A. Beatty, Edinburgh, '56 F. Beck, London, Eng., '66 H. J. Becker, Miinchen, '67 W. Beermann, Tiibingen, '60 J. C. Beetschen, Toulouse, '67 E. Bell, Cambridge, Mass., '69 Mrs. M. R. Bellairs, London, '60 M. Benazzi, Pisa, '56 J. A. A. Benoit, Nogent sur Mame, '60 H. D. Berendes, Nijmegen, '69 W. E. Berg, Berkeley, Calif., "57 H. Bergquist, Goteborg, '57 Miss J. H. Bijtel*. Groningen, '56 W. J. Birge, Lexington, Ky., '70 M. Bimstiel, Edinburgh, '69 D. W. Bishop, Toledo, Ohio, '70 Mrs. S. M. Bishop (Calame), Davis, Calif., '67 R. E. Black, Williamsburg, Va., '69 A. W. Blackler, Ithaca, N.Y., '69 D. P. Bloch, Austin, Tex., '69 R. F. Blount, Galveston, Tex., '60 C. W. Bodemer, Seattle, Wash., '70 D. Bodenstein, Charlottesville, Va., '56 E. J. Boell, New Haven, Conn., '57 J. T. Bonner, Princeton, N.J., '60 E. Borghese, Napoli, '56 B. G. Boving, Baltimore, Md., '57 J. L. A. Brachet, Rhode-St-Genese, '48 S. K. Brahma, Utrecht, '66 F. W. R. Brambell, '56 A. C. Braun, New York, N.Y., '70 P. L. Brien*, Bruxelles, '48 R. W. Briggs, Bloomington, Ind., '56 H. V. Brondsted*, Copenhagen, '48 D. D. Brown, Baltimore, Md., '69 C. Burdon-Jones, Townsville, Qld., '60 R. K. Bums, Bridgewater, Va., '52 D. N. Butcher, Cambridge, Eng., '70 E. G. Butler, Princeton, N.J., '56 }. M. Butros, Beirut, '67 R. D. Cahn, Seattle, Wash., '69 J. M. Cairns, Springville, N.Y., '69 R. Cambar, Talence, '57 E. van Campenhout, Louvain, '48 E. C. Cantino, East Lansing, Mich., '70 E. W. Caspari, Rochester, N.Y., '60 C. Y. Chang, Peking, '57 Mrs. H. Chamiaux (Cotton), Paris, '64 H. B. Chase, Providence, R.I., '60 P. S. Chen, Zurich, '60 G. Chieffi, Napoli, '64 Chuang Hsiao Hui, Shanghai, '48 Mrs. M. Cigada (Leonardi), Milano, '57 J. M. J. Clavert, Strasbourg, '57 Mrs. R. M. Clayton (Freedman), Edinburgh, '60 A. C. Clement, Atlanta, Ga., '57 U. Clever, Lafayette, Ind., '69 S. Cohen, Nashville, Tenn., '64 J. R. Coleman, Providence, R.I., '70 A. Collenot, Paris, '69 J. R. Collier, New York, N.Y., '69 G. Colombo, Ferrara, '60 A. L. Colwin, New York, N.Y., '56 Mrs. L. H. Colwin, New York, N.Y., '60 C. E. Corliss, Memphis, Tenn., '70 G. W. Comer*, Philadelphia, Pa., '52 D. P. Costello, Chapel Hill, N.C., '48 A. J. Coulombre, Bethesda, Md., '69 M. Crippa, Palermo, '70 Y. Croisille, Nogent sur Mame, '66 P. S. Crowell, Bloomington, Ind., '60 A. S. G. Curtis, Glasgow, '69 A. M. Dalcq*. Bruxelles, '33 H. C. Dalton, University Park, Pa., '70 V. D'Amelio, Palermo, '64 Mrs. J. C. Dan, Tokyo, '57 K. Dan, Tokyo, '57 J. C. Daniel Jr., Boulder, Colo., '70 J. Dankmeijer, Leiden, '60 I. Dawid, Baltimore, Md., '69 Sir G. R. De Beer*, Bex, Switz., '38 R. L. De Haan, Baltimore, Md., '69 H. A. Denis, Liege, '69 Mrs. T. A. Dettlaff, Moscow, '56 Ch. Devillers, Paris, '57 M. De Vincentiis, Camerino, '64 305 Miss M. A. DiBerardino. Philadelphia, Pa., '66 Mrs. F. Dieterlen (Lievre), Paris, '68 A. Dollander, Nancy, '60 W. J. van Doorenmaalen, Utrecht, '60 D. B. Drachman, Baltimore, Md., '70 N. I. Dragomirov, Moscow, '48 M. Durchon, Lille, '69 F. Duspiva, Heidelberg, '69 R. M. Eakin, Berkeley, Calif., '48 J. D. Ebert, Baltimore, Md., '56 M. V. Edds Jr., Providence, R. I., '60 A. Egelhaaf, Koln, '70 G. Eguchi, Nagoya, '69 H. Englander, Koln, '60 Mrs. H. Eyal (Giladi), Jerusalem, '64 J. Faber, Utrecht, '64 J. F. Fallon, Madison, Wis., '70 G. Fankhauser, Princeton, N.J., '48 E. Faure-Fremiet*, Paris, '33 J. C. Fautrez, Gent, '57 M. Feldman, Rehovoth, '60 Dame H. B. Fell, Cambridge, Eng., '36 Mrs. A. A. Ficq, Rhode-St. Genese, '60 G. Filogamo, Torino, '60 C. V. Finnegan, Vancouver, B.C., '70 M. Fischberg, Geneve, '57 R. A. Flickinger, Buffalo, N.Y., '60 T. Thomson Flynn*, '38 Mrs. F. Martindale Foote, Carbondale, 111.. '64 T. Fujii, Tokyo, '60 P. J. Gaillard, Leiden, '60 J. G. Gall, New Haven, Conn., '69 J. Gallera, Geneve, '57 L. Gallien, Paris, '56 G. P. Georgiev, Moscow, '69 P. W. Gilbert, Ithaca, N.Y.. '60 A. Giroud*. Paris, '48 G. Giudice, Palermo, '69 R. W. Glade, Buriington, Vt., '70 T. W. Glenister, London, Eng., '60 P. F. Goetinck, Storrs, Conn., '70 R. J. Goss, Providence, R.I., '69 C. T. Grabowski, Coral Gables, Fla., '70 Ph. Grant, Eugene, Ore., '64 P. B. Green, Philadelphia, Pa., '70 J. H. Gregg, Gainesville, Fla., '69 J. R. Gregg. Durham, N.C., '57 T. A. I. Grillo, Ibadan, '66 C. Grobstein, La Jolla. Calif.. '56 Z. Grodzinski*. Krakow, '60 J. Gross, Boston, Mass., '70 P. R. Gross, Cambridge, Mass., '69 H. Griineberg, London, Eng., '56 J. B. Gurdon, Oxford, '69 T. Gustafson, Stockholm, '56 E. Hadorn, Zurich, '48 A. Haget, Talence, '60 T. Hama, Nagoya, '60 V. Hamburger, St. Louis, Mo., '48 H. L. Hamilton, Charlottesville, Va., '56 W. J. Hamilton, London, Eng.. '48 J. Hammerling. Wilhelmshaven. '60 W. S. Hammond, Syracuse, N.Y.. '60 Mrs. J. A. Hanocq (Quertier). Rhode-St-Genese, '69 J. W. S. Harris, London, Eng., '68 M. Hasek. Praha. '57 Miss E. D. Hay. Boston, Mass., '64 Y. Hayashi. Tokyo, '60 H. Hayek, Wien, '60 W. G. Heim, Colorado Springs, Colo., '66 W. A. Hemmings, Bangor, Wales, '69 Miss S. Hennen, Milwaukee, Wis., '70 H. Herrmann, Storrs, Conn., '60 0. Hess, Freiburg, '69 Miss G. W. Hinsch, Coral Gables, Fla., '70 Y. Hiramoto, Misaki, '60 L. Hoadley*, Cambridge, Mass., '48 H. Holter, Copenhagen, '57 J. K. F. Holtfreter, Rochester. N.Y., '36 H. Holtzer, Philadelphia. Pa.. '60 S. Horstadius*. Uppsala, '48 Y. Hotta, La Jolla, Calif., '70 Ch. Houillon, Paris, '67 J. M. T. Hultin, Stockholm. '56 R. R. Humphrey*. Bloomington. Ind.. '49 Miss T. Humphrey. Birmingham, Ala.. '56 M. Ichikawa, Kyoto. '60 J. Ishida. Urawa, '60 M. Ishikawa. Toba. '70 A. G. Jacobson, Austin, Tex., '70 D. C.-O. Jacobson, Uppsala, '69 L. F. Jaffe, Lafayette. Ind.. '70 J. Jansen*. Oslo, '60 Miss A. G. Johnen. Koln, '64 A. D. Jost, Paris, '56 T. Kajishima, Nagoya, '60 A. J. B. Kallen, Lund, '60 Y. Kanoh, Akkeshi. '60 S. Karasaki. Montreal. '69 1. Kawakami. Fukuoka. '57 N. E. Kemp. Ann Arbor. Mich.. '57 A. Keynan. Jerusalem. '70 Mrs. M. A. Sengel Kieny, Grenoble. '64 R. C. King. Evanston. 111.. '70 T. J. King. Washington. D.C.. '60 V. Kiortsis. Athens. '69 A. O. Klein. Waltham, Mass.. '70 N. W. Klein. Storrs. Conn.. '70 Mrs. U. Kocher-Becker. Heiligenberg. '66 W. Kocher. Heiligenberg, '66 L. D. Koehler, Mt. Pleasant, Mich.. '70 J. J. Kollros. Iowa City. Iowa. '56 I. R. Konigsberg. Charlottesville. Va., '69 K. Kratochwil, Wien, '69 G. Krause, Wiirzburg, '56 A. Krishnakumaran, Cleveland, Ohio, '70 Miss T. K. Kuusi. Helsinki. '56 J. C. Lacroix. Paris. '69 R. A. Lallier. Villefranche sur Mer, '60 W. Landauer*, London, Eng., '57 A. Lang, East Lansing, Mich., '70 J. Langman, Charlottesville, Va., '56 J. W. Lash, Philadelphia, Pa., '69 H. Laufer, Storrs, Conn., '69 Mrs. L. Lazard (Hauben), Nogent sur Mame, '68 S. Leghissa, Bologna, '60 H. E. Lehman, ChapelHill, N.C., '57 F. E. Lehmann, Bern, '48 J. Leighton, Pittsburgh, Pa., '70 Th. Lender, Orsay. '60 H. M. Lenhoff, Irvine, Calif., '70 V. Leone, Milano '57 Miss R. Levi-Montalcini, St. Louis, Mo., '56 M. Locke, Cleveland, Ohio. '70 306 G. V. Lopashov, Moscow, '48 S. Lovtrup, UnieS, '60 H. Lutz, Clermont-Ferrand, '57 D. J. McCallion, Hamilton, Ont., '64 Miss R. Maggio, Palermo, '64 T. Mann, Cambridge, Eng., '60 Mrs. L. Marin (Lewin), Paris, '68 C. L. Markert, New Haven, Conn., '57 E. Marre, Milano. '69 P. N. Martinovitch, Beograd, '60 J. P. Mascarenhas. Albany, N.Y., '70 Y. Masui, Toronto, Ont., '69 C. B. Metz, Coral Gables, Fla., '56 Y. Mikami, Tsu. '60 J. Milaire, Bruxelles, '64 R. D. Milkman, Iowa City, Iowa, '70 A. Minganti, Genova, '56 Miss B. Mintz. Philadelphia, Pa., '57 A. Monroy, Napoli, '56 Miss F. Moog, St. Louis, Mo., '56 S. Mookerjee, Calcutta, '60 Mrs. B. C. Moore, Riverside, Calif., '69 }. A. Moore, Riverside, Calif., '57 A. A. Moscona, Chicago, 111., '57 H. W. Mossman*, Madison, Wis., '56 I. Motomura*, Sendai, '57 Mrs. L. Mulherkar, Poona, '69 }. G. Mulnard, Bruxelles, '57 Mrs. M. R. Murray, New York, N.Y.. '60 G. W. Nace, Ann Arbor, Mich., '60 O. Nakamura, Osaka, '57 E. Nakano, Nagoya, '57 J. Needham, Cambridge, Engl., '48 L. Nelson, Toledo, Ohio, '70 M. Nemer, Philadelphia, Pa., '69 D. A. T. New, Cambridge, Eng., '69 D. R. Newth, Glasgow, '57 G. Nicolet, Geneve, '69 P. D. Nieuwkoop, Utrecht, '57 H. Nishimura, Kyoto, '69 M. C. Niu, Philadelphia, Pa., '56 H. Oka, Tokyo, '60 T. S. Okada, Kyoto, '60 Y. K. Okada*, Tokyo, '52 Miss K. Okazaki. Tokyo, '60 O. M. Olivo, Bologna, '57 Miss }. M. Oppenheimer, Bryn Mawr, Pa., '56 R. O'Rahilly, Baltimore, Md., '64 Mrs. M. C. Ward Orsini, Madison, Wis., '64 F. Orts Llorca, Madrid, '56 Mrs. J. H. Overton, Chicago, 111., '60 S. Pai, Shanghai, '48 J. Papaconstantinou, Oak Ridge, Tenn., '69 P. Pasquini, Roma, '57 J. J. Pasteels, Bruxelles, '38 B. M. Patten*, Ann Arbor, Mich., '56 J. Paul, Glasgow, '69 C. Pelling, Tubingen, '69 S. Penman, Cambridge, Mass., '69 H. P. Perlmann, Stockholm, '60 G. W. Philpott, St. Louis, Mo., '70 J. Piatigorsky, Bethesda, Md., '70 J. Piatt, Philadelphia, Pa., '60 L. J. Pierro, Storrs, Conn., '70 L. Piko, Pasadena, Calif., '64 L. V. Polezhaev, Moscow, '48 K. R. Porter, Cambridge, Mass., '64 D. F. Poulson, New Haven, Conn., '60 Mrs. N. M. Pourreau (Schneider), Paris, '68 Miss D. Price, Chicago, 111., '60 S. Ranzi, Milano, '48 M. H. J. Rapola, Helsinki, '69 L. Raunich, Ferrara, '56 Chr. P. Raven, Utrecht, '41 Mrs. M. E. Rawles (Spurbeck), Baltimore, Md., '56 A. Raynaud, Sannois, '60 G. Reverberi, Palermo, '48 R. W. Reyer, Morgantown, W.Va., '56 G. G. Robertson, Memphis, Tenn., '66 K. T. Rogers, San Francisco, Calif., '64 S. M. Rose, Belle Chasse, La., '56 J. Rostand*, Ville d'Avray, '60 L. N. Ruben, Portland, Ore., '68 }. V. Ruch, Strasbourg, '69 F. H. Ruddle, New Haven, Conn.. '70 Miss D. Rudnick, '56 M. N. Runner, Boulder, Colo., '60 J. A. M. Runnstrom*, Stockholm, '48 H. Sakai, Tokyo, '69 M. Sala, New York, N.Y., '60 Miss B. Salzgeber, Nogent sur Marne, '64 K. Sander, Freiburg, '66 T. Sato, Nagoya, '57 H. W. Sauer, Heidelberg, '70 J. W. Saunders, Albany, N.Y., '56 L. O. Saxen, Helsinki, '60 E. Scarano, Napoli, '69 Mrs. D. Scheib (Pfleger), Nogent sur Marne, '64 K. Scherrer, Lausanne, '69 J. A. Schiff, Waltham, Mass., '70 H. A. Schneiderman, Irvine, Calif., '64 Mrs. J. Schoeller (Raccaud), Paris, '69 O. E. Schotte, Amherst, Mass., '56 B. Schreiber, Parma, '56 H. M. Schulman, La Jolla, Calif.. '69 R. L. SeaHs, Philadelphia, Pa., '70 S. N. Sedra, Alexandria, '60 S. J. Segal, New York, N.Y., '57 F. Seidel, Marburg, '60 G. G. Selman, Edinburgh, '60 K. Sembrat, Wroclaw, '60 Ph. Sengel. Grenoble. '60 E. C. Sensenig, Birmingham, Ala., '57 P. Sentein, Montpellier, '60 S. Shapiro, Amherst, Mass., '70 J. R. Shaver, East Lansing, Mich., '60 S. C. Shen, New York, N.Y., '60 S. Shostak, Pittsburgh, Pa., '70 }. Signoret, Caen, '67 M. Singer, Cleveland, Ohio, '69 K. I. Sirakami, Kofu, '60 J. L. Sirlin, New York. N.Y., '60 Miss D. M. Skinner. Oak Ridge. Tenn.. '70 F. Skoog, Madison, Wis., '70 N. Skreb, Zagreb,'60 O. Slaby. Plzen. '64 F. Sladecek. Praha. '60 L. D. Smith. Lafayette. Ind.. '69 R. W. Sperry, Pasadena, Calif., '64 M. Spiegel, Hanover, N.H.. '64 A. A. Spirin, Moscow, '69 A. Spirito, Roma, '56 N. T. Spratt, Jr., Minneapolis, Minn., '56 D. Starck, Frankfurt, '52 A. Stefanelli, Roma, '52 M. S. Steinberg, Princeton, N.J., '69 307 Mrs. K. E. Stenger (Haffen), Nogent sur Mame, '64 Mrs. F. Stephan (Dubois). Nancy, '60 H. Stem, La Jolla, Calif., '69 L. C. Stevens, Bar Harbor, Me., '69 L. S. Stone*, New Haven, Conn., '48 F. Strauss, Bern, '60 G. Strudel, Nogent sur Mame, '64 S. Subtelny, Houston, Tex., '69 H. Sugino, Osaka, '57 M. Sugiyama, Toba, '57 M. Sussman, Waltham, Mass., '69 G. Szekely, Pecs, '69 K. Takata, Nagoya, '60 H. Takaya, Kobe. '57 P. Tardent. Zurich. '69 A. K. Tarkowski. Warszawa, '60 A. C. Taylor, Houston, Tex.. '57 C. S. Thornton, East Lansing, Mich., '60 H. Tiedemann, Berlin, '60 C. A. du Toit, Stellenbosch, '60 S. I. Toivonen. Helsinki, '48 G. Tondury, Ziirich, '48 H. A. L. Trampusch, Amsterdam, '56 R. L. Trelstad, Boston, Mass., '70 J. P. Trinkaus, New Haven, Conn., '60 H. Tuchmann-Duplessis, Paris, '56 P. H. Tuft, Edinburgh, '64 T. C. Tung, Peking, '48 Miss S. L. Ullmann, Glasgow. '70 E. Urbani. Roma, '56 H. Ursprung. Ziirich, '69 L. C. A. Vakaet, Antwerpen, '60 G. Vandebroek. Louvain, '57 E. Vannini, Bologna, '56 W. S. Vincent, Pittsburgh, Pa.. '60 E. P. Volpe. New Orleans, La., '70 O. E. Vyazov, Moscow, '60 C. H. Waddington, Edinburgh, '48 Mrs. S. Gluecksohn Waelsh, New York, '60 R. A. Wallace, Oak Ridge, Tenn., '69 A. J. Waterman, Bethesda, Md., '56 R. L. Watterson, Urbana, 111., '56 R. Weber, Bern, '60 L. Weiss. Buffalo. N.Y.. '69 P. A. Weiss*, New York, '48 L. J. Wells. Minneapolis, Minn., '60 B. S. Wenger, Saskatoon, Sask., '70 N. K. Wessells, Stanford, Calif., '69 J. A. Weston. Cleveland, Ohio, '70 A. H. Whiteley, Seattle, Wash., '57 J. R. Whittaker, Philadelphia. Pa.. '70 Sir V. B. Wigglesworth*, Cambridge, Eng., '57 C. E. Wilde, Jr., Philadelphia, Pa., '57 B. H. Willier*, Baltimore, Md., '48 F. H. Wilt, Berkeley, Calif., '69 W. A. Wimsatt, Ithaca, N.Y., '56 E. Witschi*, New York, N.Y., '48 C. V. Woellwarth, Heiligenberg, '56 M. W. Woerdeman*, Amsterdam, prior to '33 Mrs. Em. Wolff (Hennig), Nogent sur Mame, '64 Et. C. Wolff, Nogent sur Mame, '48 L. Wolpert, London, '69 A. Wolsky, Tarrytown, N.Y., '60 T. Yamada, Oak Ridge, Tenn., '57 K. Yamamoto. Hakodate, '60 T. Yamamoto, Nagoya, '60 C. L. Yntema, Syracuse, N.Y., '48 Miss J. J. P. Zaayer, Leiden, '60 A. A. Zimmerman*, Houston, Tex., '56 J. Zwaan, Charlottesville, Va., '69 E. Zwilling, Waltham, Mass., '56 308 BOOK NOTICES N.B. These notices are descriptive rather than critical. Their aim is to provide an idea of the scope and potential usefulness o[ the books. Miscellaneous, general biology 1 . Baltzer, F., 1967 — Theodor Boveri: life and work of a great biologist 2. Kalmus, H. (Edit.), 1966 — Regulation and control in living systems 3. King, R. C, 1 968 — A dictionary of genetics 4. KoROTKOVA, G. P., 1 968 — Principles of integrity 5. RiEGER, R., A. MiCHAELis and M. M. Green, 1968 — A glossary of genetics and cytogenetics 6. Serra, J. A., 1968 — Modern genetics, vol. 3 Instruction in developmental biology General developmental biology 7. Bell, E. ( Edit. ) , 1 966 — Molecular and cellular aspects of development 8. Bodemer, C. W., 1968 — Modern embryology 9. Ebert, J. D., 1 967 — Entwicklungsphysiologie 10. GuiDONi, P., 1968 — Embryologie 11. Leghissa, S., 1968 — Elementi di embriologia dei vertebrati e dell'uomo 12. Saunders, J. W., Jr., 1968 — Animal morphogenesis 13. SiEWiNG, R., 1969 — Lehrbuch der vergleichenden Entwicklungsgeschichte der Tiere 14. Weiss, P. A., 1968 — Dynamics of development: experiments and in- ferences 1 5. Whittaker, J. R., 1 96S — Cellular differentiation Bio-medical and veterinary science 16. AuROUX, M., G. David and P. Haegel, 1968 — Embryologie; travaux pra- tiques et enseignement dirige, vols. 1 {2nd edit.) and 3 1 7. Hegre, E. S., 1 967 — A model atlas of the ten millimeter pig 1 8. Michel, G., 1 968 — Embryologie 19. SoLeRE, M., 1967 — Le cerveau primitif chez I'embryon humain de 34 jours 20. SoLeRE, M., 1 969 — Atlas d'embryologie humaine, vol. 1 21. Thomas, J. B., 1968 — Introduction to human embryology 22. Wang, H., 1 968 — An outline of human embryology Research in developmental biology General developmental biology 23. Adolph, E. p., 1 968 — Origins of physiological regulations 24. Austin, C. R., 1 968 — Ultrastructure of fertilization 25. Bullough, W. S., 1 967 — The evolution of differentiation 26. Emelianov, S. V. (Edit.), 1968 — The tempo of individual development of animals and its changes during evolution 27. Etkin, W. and L. I. Gilbert (Edits.), 1968 — Metamorphosis; a problem in developmental biology 28. FouLDS, L., 1 969 — Neoplastic development 309 29. GiNSBURG, A. S., 1968 — Fertilization in fishes and the problem of poly- spermy 30. Hay, E. D. and J. P. Revel, 1969 — Fine structure of the developing avian cornea 31. HoRSTADius, S., 1969 — The neural crest 32. Medvedev, Zh. A., 1968 — Molecular-genetic mechanisms in development 33. Polezhaev, L. v., 1 968 — The loss and restoration of regenerative capacity in animal tissues and organs 34. Preda, v., 1969 — Developmental biochemistry of the vertebrate embryo 35. RoLNiK, V. v., 1968 — Embryonic biology of bird development 36. Schmidt, A. J., 1968 — Cellular biology of vertebrate regeneration and repair 37. Schmidt, G. A., 1968 — The embryogenesis-types and their adaptative significance 38. TiTOVA, A. K., 1968 — Development of receptor structures in the inner ear of vertebrates 39. Ursprung, H. (Edit), 1968 — The stability of the differentiated state Bio-medical research, including teratology 40. AssALi, N. S. (Edit.), 1968 — Biology of gestation .vols. 1 and 2 41. BoLANDE, R. p., 1967 — Cellular aspects of developmental pathology 42. Conrad, K. and others, 1969 — Handbuch der Urologie, vol. 1, Anatomic und Embryologie 43. Emery, J. L. (Edit), 1969 — The anatomy of the developing lung 44. Franke, H., 1 969 — Feinstruktur der Plazenta 45. Gommers, a., 1968 — Thyroide maternelle et developpement prenatal du rat 46. Hertig, a. T., 1 968 — Human trophoblast 47. JoFFE, J. M., 1 969 — Prenatal determinants of behaviour 48. Kalter, H., 1 968 - — Teratology of the central nervous system 49. KoBAKOVA, E. M., 1968 — Nervous regulation of intestinal mobility in onto- genesis 50. Kreybig, Th. von, 1968 — Experimentelle praenatal-Toxikologie 51. Solcher, H., 1968 — Zur Neuroanatomie und Neuropathologie der Friih- fetalzeit 52. Torpin, R., 1 969 — The human placenta 53. WiLLERT, H.-G. and H.-L. Henkel, 1969 — Klinik und Pathologie der Dysmelie Symposium reports, etc. General developmental biology 54. CowDRY, E. V. and S. Seno (Edits.), 1969 — Nucleic acid metabolism, cell differentiation and cancer growth 55. Locke, M. (Edit.), 1969 — The emergence of order in developing systems 56. Sigel, M. M. (Edit.), 1968 — Differentiation and defense mechanisms in lower organisms 57. Wolff, E. (Edit.), 1969 — Les interactions tissulaires au cours de I'or- ganogenese Bio-medical research, including teratology 58. Bertelli, a. and L. Donati ( Edits. ) , 1 969 — Teratology 59. IAEA (Edit.), 1968 — Effects of radiation on cellular proliferation and differentiation 60. JiLEK, L. and S. Trojan, 1 968 — Ontogenesis of the brain 310 61. Lamming, G. E. and E. C. Amoroso (Edits.), 1967 — Reproduction in the female mammal 62. Shelesnyak, M. C. and G. J. Marcus (Edit.), 1969 — Ovum implantation 63. Teir, H. and T. Rytomaa (Edits.), 1967 — Control of cellular growth in adult organisms Plant morphogenesis 64. BuTENKO, R. G., 1968 — Plant tissue culture and plant morphogenesis 65. Steward, F. C., 1968 — Growth and organization in plants 66. WiLKiNS, M. B. (Edit.), 1969 — The physiology of plant growth and development 1 THEODOR BOVERI Life and work of a great biologist, 1862 — 1915 1967 By F. Baltzer Univeristy of California Press (translated by Dorothea Rudnick) Berkeley - Los Angeles 165 pp., 17 figs., 7 pis. Price: $ 6. — This is the English translation of a book published in German in 1962. The very competent translator states in her translator's note that the main reason why she undertook this work was "the strong feeling that the present generation of American cell biologists has too little contact with the biological groundwork on which the exciting modern advances stand, especially with the German work and even more especially with that of Boveri." The final draft of the translation was prepared together with Prof. Baltzer in Berne. Some minor alterations were made from the German text. Otherwise, an attempt was made to retain the timbre of the original. Those who already know the German book will agree that it is admirable, being both warmly human and thoroughly scientific. The book is in two parts, one describing the life and personality of Boveri, and the other discussing his contributions to cytology, embryology, and the study of heredity. The book is very well produced and is illustrated with 6 photographic portraits and 17 line drawings reproduced from Boveri's publications. It con- tains a complete bibliography of Boveri's publications as well as a list of publications issued from the Zoological Institute at Wiirzburg during his Professorship (1893 — 1915). There is also a glossary and a combined author and subject index. 2 REGULATION AND CONTROL IN LIVING SYSTEMS 1966 Editor: H. Kalmus John Wiley & Sons 468 pp., 137 figs., 5 tbs. London - New York - Sidney Price: $ 13.75 Contributors: Bell (London), Blest (London), Brown-Grant (Oxford), Free (Harpenden, Herts.), Fry (London), Kalmus (London), Lewis (London), Newth (Glasgow), J. Maynard Smith (Brighton), S. Maynard Smith (Brighton), Wilkie (London), Wilkins (London), Wynne- Edwards (Aberdeen) The direct significance of this book for developmental biologists is limited, because the field covered is extremely broad, encompassing such vastly dif- ferent subjects as regulation and control in engineering, molecular regulation in the cell, physiological control mechanisms, and regulation in animal societies and populations, to mention but a few. 311 The 16 chapters of the book are grouped in five sections, entitled respec- tively "Principles and methods", "Cells and individuals", "Development and genetics", "Groups and populations", and "Conclusions". Three of the four chapters in section III may be mentioned specifically. The first is by J. S. Wilkie and is entitled "Early studies of biological regulation: an historical survey" (30 pp.). In it most of the attention goes to the work of Reaumur, Trembley, Bonnet, and Roux. The two other chapters are by P. R. Bell and D. R. Newth respectively, and deal with regulation of plant growth (23 pp.) and with regulation in animal development (15 pp.). The latter chapter in particular is very thoughtful, and poses several important problems clearly and succinctly, although it refrains from going into details, and is not illustrated. The book is illustrated predominantly with diagrams, and has author and subject indexes. 3 A DICTIONARY OF GENETICS 1968 By R. C. King Oxford University Press 292 pp. New York - London - Toronto (paper-bound) Price: 34 s. This book was conceived primarily for the use of beginning students. The selection of entries was obviously guided by pragmatic motives, i.e. by the aim of elucidating those terms that are commonly encountered in genetical literature, whether they be of a strictly genetic or of a more general nature. The book contains, at a rough estimate, some 3,500 to 4,000 entries, but a large proportion of these are non-genetic and relate to other fields of science such as botany, zoology, taxonomies, palaeontology, endocrinology, (bio)- chemistry, and physics. The definitions are usually brief. No literature is given. Chemical formulas, charts, and simple diagrams are provided wherever needed. The book is concluded by an appendix containing a chronology of historical events bearing on genetics, a list of periodicals, a list of laboratories in North America engaged in human genetics research, and a listing of teaching aids for genetics available in the U.S.A. (See also review no. 5 below) 4 PRINCIPLES OF INTEGRITY (On the problem of correlation in living and non-living systems) 1968 By G. P. Korotkova Leningrad 162 pp., 13 figs., 2 tbs. Leningrad University (paper-bound) This book is written in Russian and is announced only briefly. It is an essay on biological organization. The author is an associate of Prof. B. P. Tokin, Department of Embryology, Leningrad University. The following condensation of the table of contents may provide an idea of the nature of the book: Integral systems and their classification; the concept of "ideal" integrity; some general concepts characteristic of integrity (symmetry, polarity, differentiation, integration); comparison of systems with regard to their integrity; entropy, information, and integrity; isomorphic transformation of integrity (parallehsm). The bibliography covers six pages and gives much Russian literature, mostly recent to very recent. 312 5 A GLOSSARY OF GENETICS AND CYTOGENETICS By R. Rieger, A. Michaelis Springer- Verlag and M. M. Green Berlin - Heidelberg - New York 507 pp., 90 figs., 6 tbs. Price: DM 66.—; $ 16.50 This is the completely revised English version of an originally German book that first appeared in 1954, and was revised in 1958. The new book is printed on the same format and in the same type as the previous edition; it is about one fourth shorter, and contains about 2,500 entries, as against about 4,000 in the 1958 edition. Taking into account that the latter contained little information relative to molecular and microbial genetics, which are now well represented, it follows that a considerable amount of material was eliminated for the present edition. The aim of the writers has been to provide material suitable both for students and research workers. Many terms are described at some or even considerable length, while quite a few descriptions refer to experimental data and appropriate literature. Cross-referencing is very extensive. The author- ship of terms is meticulously recorded. Wherever necessary good illustrative material is provided. The bibliography covers more than 40 pages. 6 MODERN GENETICS Vol. 3 1968 By J. A. Serra Academic Press 792 pp., 119 figs., 19 tbs.. 3 pis. London - New York Price: $ 27.50; 168 s. This is the final volume of a book of which the first two volumes appeared in 1964 and '66 respectively, and were reviewed in the two previous main issues of Gen. Embryol. Inf. Serv. ( 1965 and '67). The present volume is in three parts, dealing consecutively with cyto- plasmic inheritance and cytoplasmic changes; nuclear treptions and mutations, genetic units; and, finally, with sex determination and life cycles. Both the first and third part contain material that is of interest to development biologists. In the first, this is particularly the chapter on interspecific hybrids (16 pp.), and in the third, that on sex determination in vertebrates (45 pp.) (the only case in which much is known about the action of the sex genes by way of the hormonal system). In the extensive bibliography the most recent titles date from 1965. The book is concluded by author and subject indexes. 7 MOLECULAR AND CELLULAR ASPECTS OF DEVELOPMENT 1966 (first printing) Editor: E. Bell Harper 6 Row 525 pp., 400 figs., 59 tbs. New York - Evanston - London J. Weatherhill, Inc., Tokyo Price: 32 s. This book, first published in 1965, is still probably the best available "book of readings" in developmental biology. The American edition was reviewed in Gen. Embryol. Inf. Serv. 11, 1965, p. 341. The present edition is a photo-offset facsimile reproduction on a slightly reduced format. The advantage of this technique of reproduction is that the price of the 313 book is considerably reduced, at least for countries outside the U.S.A. A disadvantage is that the quality of the photographic illustrations has suf- fered. They are on the whole much more smudgy than the original ones, which had been reproduced with the utmost care. Otherwise the production of the book is quite satisfactory. 8 MODERN EMBRYOLOGY 1968 By C. W. Bodemer Holt, Rinehart & Winston, Inc. 475 pp., 327 fiqs., 3 tbs. New York - London Price: $ 9.95; 95 s. This text-book is essentially an elaborated version of L. G. Barth's "Em- bryology" (2nd edition, 1953), but seen from another point of view it is an entirely new book. The text has been rewritten almost entirely, although occasionally and original paragraph is recognizable. The basic plan of the book has remained unaltered, but a wealth of new material has been smoothly integrated into the old text, while some of the old material has been con- siderably reshuffled, and an entirely new chapter on nucleo-cytoplasmic inter- actions added. The new book thus truly reflects the advances made during the last 15 years. For those who have never used Barth's book, a quotation from the present book's preface may clarify its nature: "Modern Embryology is designed as a brief introduction to the general principles of embryology and a survey of developmental anatomy and physiology. In its preparation the guiding policy has been to present without excessive embroidery the factual and theoretical material necessary for an understanding of embryonic development and an appreciation of developmental biology. It is intentionally not encyclopedic in character, although the advanced student may find it useful as a survey of developmental processes." One of the differences with Barth's book is the inclusion of brief lists of selected readings at the end of each chapter, and of a fairly extensive bibliography at the end of the book. Although in itself this is well-balanced, it is a pity that no references are made to it in the text, particularly since the use of authors' names in the text is rather inconsistent. A major feature of the book are its illustrations. Most of the figures from Barth's book were redrawn, but whereas the old figures were sometimes characterized by a certain crudity, the new versions are both didactically and esthetically highly satisfactory. The use of various shades of colour has contributed greatly to this end. Moreover, more than 80 new photographs were included, and these are beautifully reproduced. Another good feature of the book is a well-balanced glossary of anatomical, embryological, and general biological terms, prepared by Dr. Dorothea Rudnick. Printing and lay-out of the book are modern in the best sense of the word. 9 ENTWICKLUNGSPHYSIOLOGIE 1967 By J. D. Ebert Bayer. Landwirtschaftsverlag Serie Moderne Biologie Miinchen - Basel - Wien 230 pp.. 130 figs, (paper-bound) This is the German translation of one of the best brief introductions to developmental physiology available ("Interacting systems in development"). The original book appeared in 1965, and thus is still largely up to date. It has been received very well (for a brief review see Gen. Embryol. Inf. Serv. 314 II, 1965, p. 338), and there is thus good reason for making it available to German-speaking students in their own language. Unfortunately, however, the translation is far from ideal; although the translator is obviously a biologist, he is apparently not a specialist in this particular field, so that sometimes important shades of meaning are lost, and occasionally outright mistakes are made. Similar mistakes have crept into several figure legends. The original illlustrations are well reproduced. For some reason the original reading lists at the end of each chapter were replaced by a general reading list at the end of the book. This contains a number of German titles not quoted originally; some of these are completely irrelevant to the subject of the book. The alphabetical index is much shorter than the original one and does not contain authors' names. 10 EMBRYOLOGIE 1968 By P. Guidoni Doin, Deren & Cie. 488 pp., 477 figs. Paris (paper-bound) Price: F 75. — This book lacks a preface stating the author's aims in writing it. One gets the impression that it is based on lectures. The book essentially deals with the descriptive and comparative embryology of vertebrates and man. Its organization is conventional, with a first part discussing embryogenesis, and a second part dealing with organogenesis, arranged by organ systems. The first part contains a brief and very superficial chapter on experimental embryology and a very sketchy summary of congenital malformations, while the second part is concluded by a summary of genetics, which completely neglects the subject of developmental genetics. Another neglected subject is the relationship between embryology and evolution. The book is illustrated with simple line drawings. Many of these are schematized to the point of being completely unrealistic. They are the kind of drawing used to illustrate a lecture, but most of them are inadequate for a text-book. The book gives no literature and lacks a subject index. In conclusion, the book might have its uses in connection with specific courses, but certainly cannot be recommended as a general text-book of embryology. It is moreover much too expensive. 1 1 ELEMENTI DI EMBRIOLOGIA DEI VERTEBRATI E DELL' UOMO 1968 By S. Leghissa Unione Tipografico-Editrice 447 pp., 285 figs., 20 tbs.. 4 pis. Torinese Price: L 12.500 As far as we are aware this seems to be the first original text-book of vertebrate embryology in Italian and as such it will be welcomed by many students and teachers of biology and medicine in Italy. The treatment is almost exclusively descriptive and comparative; classical experimental data are only mentioned cursorily in connection with primary induction and twinning, while biochemical and genetical aspects are hardly mentioned at all except in the brief historical introduction. The organization of the book is conventional; the first part deals with reproduction and with general embryology from gametogenesis up to the end of embryogenesis; part two discusses the morphogenesis and different- 315 iation of the various organ systems. At the end of part one a brief chapter is devoted to twinning and to the most common developmental anomalies. The book is profusely illustrated with photographs and drawings, whose quality is on the whole reasonable to good. Many figures were redrawn by the author; some of these are highly schematized and sometimes executed in rather crude techniques; the labelling is not always very clear. The book is well printed. It has a fairly extensive bibliography, as well as author and subject indexes. 12 ANIMAL MORPHOGENESIS 1968 By J. W. Saunders Jr. The Macmillan Comp,, New York Current Concepts in Biology Series Collier-Macmillan Ltd., London 118 pp., 67 figs., 2 tbs. (paper-bound) In reviewing this new paperback it is perhaps useful to contrast it with a companion volume in the same series that appeared two years earlier: C. H. Waddington, "Principles of development and differentiation", 1966 (reviewed in Gen. Embryol. Inf. Serv., Suppl. 11, 1966, p. 13). Both books are intended for beginning biology students, and both are elementary in scope. The organization of the present book is more conventional, the style perhaps less personal; it is much more a miniature text-book of embryology, with much emphasis on morphology, but for this very reason it is more suitable as a basis for further study of embryology proper. And it must be said that as such it is exemplary, both as regards content and illustrations (the quality of the latter being much higher than in the earlier book). The treatment proceeds step by step, logically and clearly, and is at the same time completely up to date. Particularly the last chapter, discussing the genetic control of development and the epigenetic control of morphogenesis, is admirable in its readability and its selection of examples. All line drawings are either original or redrawn; and all are beautifully executed. Many photographs are also included. All figures have explanatory legends. There is a good reading list and a detailed alphabetical index. 13 LEHRBUCH DER VERGLEICHENDEN ENTWICKLUNGS- GESCHICHTE DER TIERE 1969 By R. Slewing Verlag Paul Parey 531 pp., 196 figs., 2 tbs. Hamburg - Berlin Price: DM 58.— Contents: I. Einleitung: II. Furchung; III. Keimblatterentwicklung; IV. Organdifferenzierung; V. Entwicklung der Keimzellen; VI. Entwicklung der Korperform; Metamerie; VII. Umwegt* in der Ontogenetischen Entwicklung This text-book of comparative animal embryology is the first in the German language since the classical handbook by Korschelt and Heider (1936), not counting the book by Starck (1955/65), which uses a quite different ap- proach. The present book is on a more modest scale than that by Korschelt and Heider, but is much more balanced in its treatment of invertebrates and vertebrates together. The approach is strictly morphological, with much emphasis on phylogenetic relationships. The book was primarily written for the use of students of biology, medicine, and veterinary science, and the author consequently has not aimed at anything approaching an exhaustive treatment of this vast subject. 316 The organization of the book is rigorously logical, and the style is clear. It is impossible to review the book in detail: this will be the task of specialists in the field. One thing may be mentioned: the book opens with a chapter devoted exclusively to theoretical aspects, such as the methods of comparative embryology, criteria of homology (Remane), the biogenetic law (recapitul- ation theory), the "biometabolic modes" (Osche), and questions of ter- minology. The book is exceedingly well produced, and illustrated with numerous beautiful line drawings. Many of these are original, but the ones taken from other sources were all redrawn, leading to a very satisfactory unity of style. The bibliography is restricted to important works. The book is concluded by an author index and a detailed subject index. 14 DYNAMICS OF DEVELOPMENT: EXPERIMENTS AND INFERENCES Selected papers on developmental biology 1968 By P. A. Weiss Academic Press 624 pp., 133 figs.. 2 tbs., 4 pis. New York - London In this book the author has brought together 24 of his papers so far scattered over a variety of media, some of which are not easily accessible. As he says in his foreword, his main motive in making this compilation has been that he considers "the cardinal function of these papers in their con- junction to be their contribution to the emergence of a unified understanding of the dynamic order of living systems." Major features of Weiss' writings produced during half a century have been, first, the conviction that the problems of development should be approached from many directions, and secondly the continuous effort to fill theoretical concepts with more concrete meaning. The papers have been grouped into five sections, entitled respectively "On basic principles", "On differentiation", "On growth and aging", "On form and formative processes", and finally "On the dynamics of the nervous system". Within each section the order of the papers is logical rather than chronological. The papers are reproduced in facsimile, complete with the original illus- trations and running titles (the latter sometimes being meaningless in the context of this book). Three papers bear no date of publication; the rest date from as far back as 1933 until 1967. The book is concluded by a brief topical index referring to chapters. 15 CELLULAR DIFFERENTIATION 1968 By J. R. Whittaker Dickenson Publishing Cy., Inc. Dickenson Ser. on Contemp. Belmont, Calif. Thought in Biol. Sci. Price: 21 s.; $ 2.50 112 pp., 52 figs., 21 tbs.. 2 pis. (paper-bound) This booklet forms part of a series of "books of reading". The aim of the series is to confront the student right from the beginning with significant original publications in a given field. The eleven papers in the present volume represent a well-balanced choice, highlighting significant aspects of the problem of differentiation. They are grouped in four sections, each with a 317 brief introduction by the editor, which places the papers in the propei perspective. The majority of the papers deal with animal material; one each bears on plant material, bacteriophages, and bacteria, respectively. The four sections are entitled respectively: "The multipotential genome" (papers by Gurdon and Uehlinger, Vasil and Hildebrandt, and Moscona), "Selective gene expression" (papers by Edgar and Wood, F. Jacob and J. Bonner), "Egg cell organization" (papers by Morgan and Spooner, and Curtis), and "Cell interactions: physical and chemical" (papers by Trinkaus, Grobstein, and J. J. Gilbert). The two longest papers cover 14 pages each; all but one date from the years 1957 — 1966; that by Morgan and Spooner dates from 1909. The paper by Gilbert on trans-generic induction of spines in rotifers, although it is indeed delightful, seems a little out of place in a small collection like this. The papers are reprinted in uniform type. The photographic illustrations are reproduced as such, but the other figures have all been redrawn, un- fortunately with little care. The editor has added a few explanatory diagrams and drawings. The book is concluded by a brief list of further reading. 16 EMBRYOLOGIE Travaux pratiques et enseignement dirige Vol. 1 (2nd edit., 1968) Vol. 3 (1968) Vol. 1 by G. David & P. Haegel Masson & Cie 114 pp., 226 figs. Paris Vol. 3 by M. Auroux & P. Haegel Price Vol. 1: F 30.— 146 pp., 257 figs. Price Vol. 3: F 38.— (paper-bound) In France embryology is at present taught to medical students in a three- year course. This series of three atlases has been designed to assist the student along with the practical courses given in Paris. The second volume was not available for review. The three volumes respectively deal with: (1) embryogenesis, (2) general organogenesis, and (3) development of the nervous system, sense organs, and endocrine glands. The text of the atlases is brief, the emphasis being on the illustrations. These consist of photographs, drawings, and diagrams, all three types of illustrations being of superb quality. Colour is used judiciously in almost all drawings and diagrams. The organization of the books is didactically very clear. Adequate attention is given to developmental anomalies and to foeto- maternal relationships. Data from experimental and comparative embryology are briefly treated to clarify certain relationships. The plan and execution of the series is such that teachers of human embryology in all countries might derive various new didactic ideas from them. 17 A MODEL ATLAS OF THE TEN MILLIMETER PIG 1967 By E. S. Hegre Med. Coll. of Virginia Book Store 546 looseleaf cards, Richmond, Va. cut and bound Price: $ 49. — This is a very unusual "book". It consists of a stack of more than 500 cards, nearly 7 in. high; each card carries the image of a serial cross section of a 10 mm. pig embryo at a magnification of x 16; the sections are cut out so that one (lateral) half protudes beyond the border of the card; together all sections stacked in this way build up the surface rehef of one half of the 318 embryo on the front plane of the stack, as in a wax plate reconstruction. The stack is held in place by two brass rods running through perforations and bent so that the cards can be turned back at will, as in a file. The rods are anchored in a wooden base and the stack is covered by a loose wooden "lid". The author states that a prototype of the atlas became very popular with both students and instructors. The atlas has no text, but on "pages" 11 — 19 there is a key to external body features, to prominent internal structures (to be used as landmarks), and to the various organ systems and their parts; this key refers to "pages". On the "pages" themselves labeling is restricted to structures that are difficult to interpret or to localize. The sections are photographic reproductions of rather poor quality, weak in contrast and showing little more than the minimum detail required to identify structures. The cards are made of rather soft board, and probably will soon get damaged with intensive use. Nevertheless, the atlas can be very useful as a visual aid in the teaching of embryology. 18 EMBRYOLOGIE 1968 By G. Michel VEB Gustav Fischer Verlag Komp. der Vet.-Anat. VI Jena 363 pp.. 211 figs.. 15 tbs. Price: MDN 24.10 Contents: Einleitung; Die Vorentwicklung, Progenese; Die Primitiventwicklung, Blasto- genese; Die Plazentation; Die Entwicklung der Organe, Organogenese; Die Entwicklung des Harn- und Geschlechtsapparates; Die Entwicklung des Kreislaufapparates; Die Bildung der serosen Korperhohlen und des Zwerchfelles; Die Entwicklung des Bewegungsapparates; Die Entwicklung der ausseren Haut einschl. der Hautorgane; Die Entwicklung des Nervensystems; Die Entwicklung der Sinnesorgane This is a concise text-book of embryology for the use of veterinary students. Its concentrates on domestic mammals and birds, and devotes rela- tively much attention to aspects of reproduction, early development, and placentation that are of practical importance. Comparative and histological aspects are considered only briefly, while teratology has been left out of consideration. The organization of the book is conventional. It is illustrated with numerous photographs and pen-drawings. The latter are for the greater part redrawn from varied sources, and are on the whole of good quality. Unfortunately most of the photographs are rather poorly reproduced. The book is concluded by a selective bibliography and a subject index. 19 LE CERVEAU PRIMITIF CHEZ L'EMBRYON HUMAIN DE 34 JOURS 1967 By M. Solere L'Expansion Scientifique Fran^aise 44 pp., 11 figs. Paris (paper-bound) Price: F 10. — This little book is the first of a series intended to assist the medical student in understanding the morphology of the human brain and sense organs. The series may also be of use to neurologists and neuroanatomists. The book is a picture atlas based on a well-fixed and carefully processed human embryo of 34 days. It presents a wax reconstruction of the brain and 13 photographs of exactly symmetrical serial sections through the brain, whose levels are indicated on the wax model. Four other photographs supply 319 details of the hypophyseal and ocular rudiments, while a final one shows the structure of the wall of the future hemispheres. All figures are clearly labeled; they are accompanied by a concise explanatory text and an alpha- betical index. 20 ATLAS D'EMBRYOLOGIE HUMAINE Vol.1 1969 By M. Solere Librairie Maloine S.A. 120 pp., 82 figs. Paris (paper-bound) Price: F 28. — This is the first volume of a new atlas of human embryology designed for the use of medical students at different stages of their curriculum. The later volumes will deal with the organogenesis of all the major organ systems. The present volume contains a brief survey of early development up to the stage of the flat three-layered embryo, and further concentrates on the longitudinal and transverse delimitation of the embryo, on the formation of the median digestive tube, and on the early extra- and intra-embryonic circulation and its relationship with the endodermal structures. The whole study is based on carefully preserved and meticulously sectioned embryonic material present at the Broussais Medical Faculty in Paris. The most important constituents of an atlas are its plates. In this case these consist of diagrams and photomicrographs, which are both of very good quality. The text is restricted to explanations of the plates. The diagrams are highly schematized and not intended to be realistic, but they are remarkably clear and uniform in style. The photographs are mostly superb, and wherever necessary they are clarified by diagrams. The utmost care has been devoted to the labeling of all illustrations. Details such as the formation of the bile ducts and the subdivision of the cloaca are well represented. The formation of the intestinal loop in the yolk stalk, and the fate of the cloaca are presented on the basis of new concepts emerging from the author's own research. The authors of older concepts are mentioned, but literature references are lacking. The book is very well printed; the typography is somewhat obtrusive, but no doubt effective from a didactic point of view. The book is concluded by a subject index. 21 INTRODUCTION TO HUMAN EMBRYOLOGY 1968 By J. B. Thomas Lea 6 Febiger 348 pp., 82 figs., 2 tbs. Philadelphia Price: $ 12.50 This book is not meant to be "another text-book of embryology"; the author's aim has been to describe human prenatal development within a broad frame of reference, and particularly to integrate it with data that classically belong to the domain of obstetrics: the diverse reactions of the maternal organism. Incidentally, for this very reason the choice of the title seems unfortunate. The approach chosen has entailed a chronological treatment instead of the usual systematic one. While this may not appeal to the true embryologist, it has the advantage that the story of prenatal development is a more or less continuous one, which goes hand in hand with the corres- ponding story of pregnancy. Characteristically, the book opens with a chapter on puberty. After descriptions of the male and female reproductive systems, a chapter by 320 A. J. Endow follows, entitled "The psychological impact of pregnancy on the family". From then on, the treatment is strictly chronological, encom- passing successively the first through seventh weeks, the third through sixth lunar months, and finally the third trimester of pregnancy, and birth. All chapters have a brief summary of the main events. After the chapter on the seventh week a review of the embryonal period is inserted, which contains a summary of organogenesis arranged by organ systems. The book ends with a synopsis of the main abnormalities of development. All illustrations were drawn especially for this book; unfortunately most of them are rather crude and unrealistic, while the labeling is not particularly clear. There is a list of further reading at the end of each chapter. 22 AN OUTLINE OF HUMAN EMBRYOLOGY 1968 By H. Wang William Heinemann Medical Books Ltd. 263 pp., 264 figs., 27 tbs. London Price: 45 s. This book is perhaps best characterized by a quotation from the preface: "I believe there is need for a short treatise on human embryology that will serve either as a textbook or as a reference book. The present volume is written with this purpose in mind. It tells the story of human developmental anatomy simply, directly, and to the point with as few details and as many illustrations as possible so that anyone who has had a course in Introduction to Biology would be able to follow". The organization of the book is on the whole conventional. The style is fluent and serves to make the subject interesting to the medical student. Much use is made of schemes and tables facilitating comprehension and memorizing. Small print is used wherever necessary for interesting subsidiary information, and also to describe the most frequent anomalies of development. There is a brief but adequate chapter on experimental embryology and teratology, in which some attention is devoted to the role of genes in devel- opment. The endocrine organs are treated together in a separate chapter. The book contains a number of minor inaccuracies, but these will no doubt be weeded out in subsequent editions. The numerous illustrations were especially prepared for this book, and with great success. They strike the correct balance between realism and abstraction required for the elucidation of a difficult subject. The book has a brief list of further reading, and a good subject index. 23 ORIGINS OF PHYSIOLOGICAL REGULATIONS 1968 By E. F. Adolph Academic Press 147 pp., 32 figs., 5 tbs. New York - London Price: $ 7.50; 70 s. The author of this monograph is Emeritus Professor of Physiology, Uni- versity of Rochester (N.Y.). He has been actively engaged in investigations on physiological regulation for three decades or longer. Here is a physiologist who has turned to the developing organism in the hope of increasing his insight into the principles of regulation by studying its origins. He is not interested in development per se; nevertheless, his book is of great interest to developmental biologists, because it helps them to view the embryo as a self-contained, functioning organism. The book is intended for research workers and advanced students. The treatment is not exhaustive, but aims at uncovering general patterns by means of representative examples; the authors's style is highly personal. 321 It is impossible to review the 16 short chapters in detail. The author discusses the ontogeny of about 70 regulated activities, mostly in fetal and postnatal mammals, including man. The regulation of heart rate (pacemaker) serves as a model, on the basis of which other types of regulation are expounded. The dichotomy between programmed and triggered events is emphasized, as is that between intrinsic and extrinsic regulation. One chapter discusses the ontogeny of behaviour as a component of regulation. Another deals with comparisons between species as regards sequences of maturation. The book is very well produced; it is illustrated mainly with diagrams and graphs, and is concluded by a subject index. 24 ULTRASTRUCTURE OF FERTILIZATION 1968 By C. R. Austin Holt, Rinehart and Winston Biology Studies Series New York - London 196 pp., 79 figs. Price: 56 s. Although this book, written by an outstanding expert in the field, belongs to a series intended for students, it should be equally useful to research workers, particularly since it provides detailed procedural data. This is done by way of a separate chapter in which some 80 publications are listed with details of electron microscopic procedures used. The main text is organized into five chapters, the first four of which deal respectively with sperm penetration through egg investments, fusion of con- jugants and gametes, reactions of eggs to sperm penetration, and nuclear migration, development, and union. Each of these four chapters opens with a brief section providing the necessary biological background. The last chapter of the main text is a brief general discussion. Throughout the book material is drawn from both the animal and plant kingdoms. Much attention is devoted to problems of terminology. In a book like this the illustrations are obviously of the greatest importance. Considering that they are printed on ordinary paper, it is surprising how well they have come out. Some very good line drawings are also included. The book has a 13-page bibhography and is concluded by author and subject indexes. Its price seems excessive. 25 THE EVOLUTION OF DIFFERENTIATION 1967 By W. S. Bullough Academic Press 206 pp., 32 figs. London - New York Price: $ 9.50; 45 s. Contents: 1. Introduction; 2. The simplest living organisms: bacteria; 3. Unicellular plants and animals; 4. Tissue and organ formation; 5. Tissue homeostasis; mass and function; 6. Tissue homeostasis: hormones; 7. Carcinogenesis; 8. Summary This essay is a successful attempt to synthetise a wealth of recent data bearing on differentiation and gene control. The author has worked for several decades on problems of mitotic control in mammalian tissues, and, incidentally, views mitosis as a special case of differentiation. The information reviewed ranges from the more labile chemical control of the genetic mechanisms of unicellular organisms to the chemical control of more stable differentiation in multicellular organisms, both during embryonic development and in the adult state (including ageing). A final chapter deals with the cancer problem. The final conclusion of the book is that the "evolution of cellular differentiation, dramatic as its consequences have been, has involved nothing more than an increasing elaboration of an ancient 322 theme of gene control that may have originated in some primitive prokaryote cell ". Much in the book is of a speculative nature, but certainly all of it is highly thought-provoking. Chapters 2 — 7 all have more or less speculative but lucidly written con- cluding sections. Chapter 8 is a summary of the more theoretical aspects of the problem; in its final section, entitled "Chemical messengers: the new endocrinology", the author argues that all chemical substances involved in homeostasis, ranging from repressors, through effectors and hormones proper, to pheromones, belong to one single domain of biology. The book is well printed and illustrated with good drawings and diagrams. It has a 22-page bibliography and is concluded by a subject index. 26 THE TEMPO OF INDIVIDUAL DEVELOPMENT OF ANIMALS AND ITS CHANGES DURING EVOLUTION 1968 Editor: S. V. Emelianov Publishing House ,,Nauka" 287 pp., 48 figs., 22 tbs. Moscow Contributors: Arshavsky, Baevsky, Bogoljubsky, Bogomolov, Emelianov, Koshelev, Lebe- deva, Matveiev, Persov, Petskoy, Sharov, Sleptzov, Spet, Sytina, Waguin, Zusman This book is written in Russian and is announced only briefly. It contains a series of 16 papers by Russian workers who are investigating the problem of the rate of individual development in relation to the role of heterochrony in evolution. All but one of the papers are morphological in character. Most studies concentrate on the effects of external conditions on development, particularly during artificial breeding. Three papers deal with invertebrates, the remainder with various vertebrate groups. 27 METAMORPHOSIS A problem in developmental biology 1968 Editors: W. Etkin and L. I. Gilbert North Holland Publ. Co., Amsterdam 459 pp., 98 figs., 18 tbs. Appleton-Century-Crofts, New York Price: H.fl. 55.— Contents: Metamorphosis in crustaceans (J. D. Costlow, Jr.); Metamorphic changes in insects (J. Whitten); Control of hormone production in insects (W. S. Herman); Biochemistry of insect metamorphosis (G. R. Wyatt); Gene activities during insect metamorphosis and their control by hormones (H. Kroeger); Metamorphosis in lower chordates (E. J. W. Barrington); Survey of amphibian metamorphosis (J. N. Dent); Hormonal control of amphibian metamor- phosis (W. Etkin); Biochemistry of amphibian metamorphosis (E. Frieden); Nature of hor- mone action in amphibian metamorphosis (J. C. Kaltenbach) According to the editors' preface, this book is the first "single up-to-date source that deals with the several aspects of metamorphosis in an integrative way". It is equally well suited for students and research workers. All con- tributors are outstanding authorities in their respective fields. The problems of metamorphosis are discussed from the viewpoints of morphology, physio- logy, endocrinology, and biochemistry. The chapters range in size from about 35 to about 60 pages, and are all well organized. Each has its own bibliography. With few exceptions, the most recent literature cited dates from 1966. The book is produced in offset print. It is well illustrated with many line drawings and graphs, and a few photographs. It is concluded by author and subject indexes. As far as taxonomic names are concerned, no attempt at unification has been made (for instance, the axolotl appears in the subject index under three different names). 323 28 NEOPLASTIC DEVELOPMENT 1969 By L. Foulds Academic Press 439 pp., 70 figs. London - New York Price: 110 s.; $ 16.50 The author of this book has been active in cancer research for nearly four decades and has thought deeply about cancer and its relationship to normal development. To quote from his preface "the unifying principle used in this book is the concept of neoplasia as a developmental process akin to normal development in some respects but differing from it in important particulars that are not yet well-defined. The emphasis is on the pathology of neoplasia as an epigenetic process and not on the pathology of tumours as lumps". The result is an extremely interesting book, well-balanced, rich in content, and full of original thought, which should be of value to the specialist as well as to the general and developmental biologist. The book is in three parts, entitled respectively "Historical introduction", "General and experimental pathology of neoplastic development" (6 chap- ters), and "Biological organization and developmental biology" (8 chapters). Although part II contains much that is of interest to the embryologist, we will focus our attention on part III. This is devoted to a consideration of the extent to which current knowledge and ideas about biological organization and development can provide a suitable terminological and conceptual machinery for dealing with the facts and problems emerging from part II. In fact, the current ideas in question are set forth so clearly that this part could serve as an excellent introduction to this area in its own right. Recent advances in molecular biology and in the application of cybernetics to the problems of development are emphasized throughout. Examples are mainly j drawn from unicellular organisms and vertebrates. The careful definition of | some new terms and the critical re-evaluation of earlier concepts of other authors are particularly welcome. This holds especially for the author's attempt to clear up the terminological confusion with regard to the concept I of differentiation, and for the emphasis he places on competence as the ' necessary counterpart of induction. The author is apparently unaware of the recent work of Hadorn and his group on transdetermination in insect imaginal discs cultured in vivo. The illustrations, mainly very good photographs, are almost entirely in part II. The book has a 38-page bibliography and author and subject indexes, of which the latter could have been more detailed. 29 FERTILIZATION IN FISHES AND THE PROBLEM OF POLYSPERMY 1968 By A. S. Ginsburg Publishing House ,,Nauka" 358 pp.. 68 figs., 38 tbs.. 16 pis. Moscow Contents: 1. The egg; 2. The spermatozoon; 3. Sperm-egg association; 4. The number of spermatozoa penetrating the egg at fertilization, and the fate of supernumerary spermatozoa; 5. The cortical reaction in physiologically monospermic eggs of fishes and other animals; 6. The mechanism of the block to polyspermy. This book is written in Russian and is announced only briefly. It is very comprehensive as far as the fishes are concerned, while examples from other classes and phyla are adduced for comparative purposes wherever necessary. The book has an English table of contents and a brief English summary. It is well illustrated; most of the photographic illustrations are brought together 324 as plates at the end of the book; many of these are electron micrographs. The bibliography covers 46 pages, nine of which are devoted to Russian titles; many of these are recent. 30 FINE STRUCTURE OF THE DEVELOPING AVIAN CORNEA 1969 By E. D. Hay and J. P. Revel S. Karger Monographs in Developmental Basel - New York Biology, vol. 1 Price: $ 7.70 144 pp., 48 figs. This is the first volume of a new series of monographs in developmental biology edited by A. Wolsky and P. S. Chen. The authors of this volume have carried out extensive electron microscope studies on the role of extra- cellular matrices in epithelial-mesenchymal interactions, first in regenerating amphibian limbs and later in the chick cornea system. They are now presen- ting a complete ultrastructural study of the development of this system. The book will be of interest to embryologists, cytologists, and ophthalmologists (to the latter especially because the major developmental events in the avian and mammalian cornea appear to be very similar, at least when studied with the light microscope). The book opens with a general outline of corneal development based mainly on the older light microscope literature. Then follows a chapter on the formation of the primary stroma and the role of the ectoderm, and a chapter on the origin of the endothelium and the formation of the "Brille". After a chapter discussing the later events up to hatching, the book is con- cluded by a summary and concluding remarks. The descriptive parts are based on the Hamburger-Hamilton series of stages. All chapters except the last have their own introduction and brief summary. Points of wider interest discussed in the various chapters are: secretion of connective tissue proteins by epithelia; the difference between vascular mesenchyme and mesenchyme proper; the phylogeny of the dermis and cor- neal stroma. The last chapter deals again with the developmental events, this time not chronologically but for the three tissue components separately (epithelium and primary stroma; endothelium; fibroblasts and definitive stroma), and finally discusses epithelial-mesenchymal interactions as illustrated in particular by the developing cornea. An appendix describes in detail the methods used in this study, and gives illustrations of the external form of the most important relevant Hamburger- Hamilton stages. The book is beautifully produced and profusely illustrated, mostly with superb electron micrographs. It is concluded by a nine-page bibliography. 31 THE NEURAL CREST Its properties and derivatives in the light of experimental research 1969 By S. Horstadius Hafner Publishing Comp. 1 1 1 pp., 46 fiqs. New York - London Price: $ 6.50 This is a facsimile reprint of a monograph first published in 1950. The original book is so well known that it is superfluous to review it here, particularly since no changes or additions have been made. Suffice it to say that the book has been reproduced with the utmost care. 325 32 MOLECULAR-GENETIC MECHANISMS IN DEVELOPMENT 1968 By Zh. A. Medvedev Publishing House "Meditsina" 268 pp., 107 figs., 5 tbs. Moscow Contents: 1. Elementary processes in morphogenesis: biosynthesis of information-macro- molecules; biochemical mechanisms of genetic information transfer; 2. Molecular-genetic me- chanisms of reproduction and morphogenesis in viruses; 3. Molecular-genetic mechanisms of morphogenesis and intercellular biochemical differentiation of monochromosomal bacterial cells; 4. Molecular-genetic cybernetic systems in morphogenesis and differentiation of multi- cellular organisms. The molecular structure of the nuclear chromosomes and structural-bio- chemical features of genetic and functional differentiation of chromosomes; 5. Biochemical realisation of the genetic program of morphogenesis. Changes in proteins and nucleic acids in differentiative and developmental processes; 6. Chromosomal proteins and their role in the regulation of the selective activity of genes in differentiation processes and in specialised cells; 7. Induction of the differential activity of genes by cytoplasmic and chromosomal factors and its role in general morphogenetic organization; 8. Molecular mechanisms of the programming of morphogenesis and differentiation. Theoretical analysis This book is written in Russian and is announced only briefly. The author's earlier book "Protein biosynthesis and problems of heredity, development and ageing" was published in English translation in 1966 (see review in Gen. Embryol. Inf. Serv. 12, 1967). The translated chapter headings given above sufficiently characterize the contents of the present book. The bock is well illustrated. Each chapter has its own bibliography; a relatively small proportion of the references are in Russian, but most of these are recent to very recent. 33 THE LOSS AND RESTORATION OF REGENERATIVE CAPACITY IN ANIMAL TISSUES AND ORGANS 1968 By L. V. Polezhaev Publishing House "Nauka" 326 pp.. 123 figs., 1 tb. Moscow This book is written in Russian and is announced only briefly. It is in three parts, viz. a theoretical introduction on regeneration generally, a part discussing experimental research on the restoration of regenerative capacity in a variety of animals, organs, and tissues, and a part presenting general conclusions (including chapters on immunity and on neoplastic development). The bibliography covers 37 pages and contains about 60 % Russian titles, many of which are recent to very recent. 34 BIOCHIMIA DEZVOLTARII EMBRIONARE LA VERTEBRATE (Developmental biochemistry of the vertebrate embryo) 1969 By V. Preda Academiei Republicii 274 pp. Socialiste Romania Bucuresti This book is written in Rumanian and is announced only briefly. The author is Professor of Biology at the Medical-pharmaceutical Institute in Cluj. The first five chapters deal in a systematic way with the biochemistry of various classes of substances during embryonic development in all verte- brate classes. The following substances are discussed: carbohydrates, lipids, nucleic acids, proteins, and enzymes. Other major chapters are devoted to 326 oxidative breakdown and energy production, and to the biochemical basis of differentiation. The book is not illustrated and contains no graphs. The bibliography con- tains more that 1,500 publications, without titles; a small but significant proportion of these are by Rumanian and other Eastern-European authors. 35 EMBRYONIC BIOLOGY OF BIRD DEVELOPMENT 1968 By V. V. Rolnik Publishing House "Nauka" 424 pp., 58 figs.. 52 tbs. Leningrad This book is written in Russian and is announced only briefly. It is in three parts, the first of which deals with the egg and embryonic development prior to incubation, the second with the morphology and physiology of embryonic development during incubation, and the third with the role of exogeneous factors (temperature, humidity, ventilation, etc.) in embryonic development. There is a very extensive bibliography (40 pp. continuously printed), which contains about 50 % Russian titles; much of the literature cited is recent to very recent. 36 CELLULAR BIOLOGY OF VERTEBRATE REGENERATION AND REPAIR 1968 By A. J. Schmidt University of Chicago Press 420 pp., 117 figs., 10 tbs. Chicago - London Price: 112 s. The author of this book has been actively engaged for more than ten years in the study of amphibian limb regeneration. The main theme of the book centers on the cytoarchitecture and molecular ecology of (adult) amphibian appendage regeneration. The data from this field are compared with tissue responses to injury and subsequent repair in other vertebrates, with special emphasis on wound healing. Since much of the discussion centres around the limb regeneration blastema, it is important to note that the author holds the view that the blastema does not consist of pluripotential, "embryonic" cells, but that regenerating tissues retain their previously determined genetic information for development. In his opinion redifferentiaticn is no more than modulation as defined by Weiss (1939). Only the skeleton and related connective tissues would be derived from true blastema cells, whereas all other tissues would have their origins in the homologous tissues of the stump. Most of the book is about activities and interactions at the cellular level, both in the epithelium and mesenchyme. The problem of pattern formation and polarity determination in the regenerating limb is merely grazed here and there, and most of the admittedly scanty information that is available on this problem is omitted from the discussions and literature references. On the other hand, the book contains a wealth of information on the cellular biology of the process, and as such is the first really comprehensive survey of this aspect of vertebrate regeneration ever written by a single author. The book is in three main parts, the first of which is mainly descriptive and, apart from an introduction and a brief chapter on cutaneous wound healing, deals entirely with the regenerating (adult) amphibian appendage. Part two deals with metabolites and metabolism in repair and regeneration, and has chapters on carbohydrates, lipids, nucleic acids, proteins, and en- 327 zymes. The last of these gives information on 13 hydrolases, 9 oxidoreductases. and three enzymes of other classes. Part three is on systemic and local factors in repair and regeneration, mainly hormones (pituitary, adrenocortical, thyroid, and gonadal), but also temperature, bioelectricity, vitamins, and other biological stimulators. The last chapter of the book is a summary in which some attention is devoted to the possible improvement of regeneration in higher mammals and man in connection with surgery. The book is illustrated with an abundance of well-chosen figures, mostly photomicrographs and electron micrographs, both original and taken from other sources. Their reproduction is reasonable to good. The bibliography covers close to 100 pages. The subject index could have been more detailed, since the book will frequently be used as a work of reference. For the same reason it is a pity that an author index is lacking. 37 THE EMBRYOGENESIS-TYPES AND THEIR ADAPTATIVE SIGNIFICANCE 1968 By G. A. Schmidt Publishing House "Nauka" 231 pp., 79 figs. Moscow This book is written in Russian and is announced only briefly. The author is head of the Institute of Evolutionary Morphology and Ecology of Animals of the Academy of Sciences of the U.S.S.R., Moscow. The book has a one- page summary and a table of contents in English. The five chapters discuss consecutively: the three main types of embryo- genesis (primary larval type, non-larval type, and secondary larval type); the evolutionary relationships between these types; the relationships between the type of embryogenesis and morphogenesis; periodisation of embryo- genesis; and changes in type of embryogenesis as related to progressive evolution. There is an appendix on the ecological method as applied to embryology. The book is illustrated mainly with line drawings. The bibliography covers 1 20 pages in small print; about one third of the titles are Russian. 38 DEVELOPMENT OF RECEPTOR STRUCTURES IN THE INNER EAR OF VERTEBRATES 1968 By A. K. Titova Publishing House "Nauka" 192 pp., 73 figs. Leningrad This book is written in Russian and is announced only briefly. The book is in two parts. Part one deals with the structure of the adult inner ear, and with the ultrastructure and histochemistry of the vestibular sensory epithelium. Part two then deals more or less systematically with the embryonic development of the inner ear (morphology, ultrastructure, and histochemistry) in the major vertebrate orders. All illustrations are photomicrographs and electron micrographs of reason- able quality. The bibliography covers 15 pages; about one quarter of the titles are Russian. 328 39 THE STABILITY OF THE DIFFERENTIATED STATE 1968 Editor: H. Ursprung Springer - Verlag Res. and Probl. in Cell Berlin - Heidelberg - New York Diff., vol. 1 Price: DM 54.—; $ 13.50 154 pp., 56 figs., 15 tbs. Contents: 1. Oscillations of the chondrogenic phenotype in vitro (H. Holtzer and J. Abbott); 2. Phenotypic expression and differentiation: in vitro chondrogenesis (J. W. Lash); 3. The nature and probable cause of modulation in pigment cell cultures (J. R. Whittaker); 4. Clonal aspects of muscle development and the stabality of the differentiated state (S. D. Hauschka); 5. Factors affecting inheritance and expression of differentiation: some methods of analysis (R. D. Cahn); 6. Dedifferentiation and metaplasia in vertebrate and invertebrate regeneration (E. D. Hay); 7. The acquisition, maintenance, and lability of the differentiated state in Hydra (A. L. Burnett); 8. The multipotential cell and the tumor problem (A. C. Braun); 9. The stability of the determined state in cultures of imaginal disks in Drosophila (W. Gehring) This is the first volume of a new series. Since the rationale behind the series seems very sound, and the organization is promising, we feel that we can do no better than reproduce the series editor's preface in full in order to characterize the series. "Looking through the tables of contents of recent "Advances" and "Progress" series in Cell and Developmental Biology, one realizes that the majority of these publications still take a systematic, rather than thematic approach for reviewing an area of interest. As a consequence, a given volume in a series often contains a collection of articles that for the specialist appear largely unrelated. We felt that the time had come to review, periodically, a few of the central issues in Cell and Developmental Biology in highly topical volumes. This seems indicated if a variety of seemingly unrelated avenues of research begin to illuminate one common problem as in the present volume, for example. It is also indicated if a favorite exeprimental system has been exploited in sufficient depth to warrant a coherent description; some of the volumes planned for the near future fall into this category. The authors of this volume were instructed not to describe historical background and experimental detail at great length, but to proceed, in each chapter, rapidly to the central issue: "The Stability of the Differentiated State". The book as a whole is meant to demonstrate the bearing of different lines of thought and experimentation on this central topic." We do not intend to review the various contributions to this volume in detail (see table of contents above). Suffice it to say that all are highly authoritative, and truly topical in that they mainly concentrate on important recent work which has opened up new perspectives. All but one paper deal with animal cells (vertebrate and invertebrate); the paper by Braun is largely on crown gall tumours and teratomas in plants. The book is very well printed and illustrated; it has no indexes. 40 BIOLOGY OF GESTATION Vols. I and II, 1968 Editor: N. S. Assali Academic Press Vol. I: 507 pp., 156 figs., 23 tbs. New York - London Vol. II: 406 pp., 97 figs., 47 tbs., 2 pis. Price: Vol. I: $ 27.— Vol. II: $ 23.— Contents vol. I: 1. The neural control of ovulation (Gorski); 2. Gametogenesis to implan- tation (Fridhandler); 3. Morphology of the placenta (Wynn); 4. Physiology of the placenta (Assali, Dilts, Plentl, Kirschbaum, and Gross); 5. Placental hormones (Simmer); 6. Regulation of myometrial composition, growth, and activity (Carsten); 7. The pregnant uterus: process of labour, puerperium, and lactation (Vorherr); 8. Maternal physiological adjustments (Hytten and Thomson) Contents vol. II: 1. Growth and composition of the fetus and newborn (Widdowson); 2. Fetal and neonatal circulation (Assali, Bekey, and Morrison); 3. Maternal and fetal blood constituents (Kirschbaum and DeHaven); 4. The fetal and neonatal lung (Towers); 5. Fetal 329 and neonatal kidney (Vernier and F. G. Smith Jr.); 6. Development and plasticity of the nervous system (Timiras, Vemadakis, and Sherwood); 7. Development of fetal and neonatal immunological function (R. T. Smith); 8. Bilirubin metabolism in the developing liver (A. K. Brown) This is a collaborative treatise to which 25 authors have contributed. Vol. I is subtitled "The Maternal Organism", and Vol. II "The Fetus and Neonate"; both consist of 8 chapters, ranging in length from about 20 to about 100 pages. Two authors are British, the others American; most of the authors are active investigators at Departments of Obstetrics and Gynaeco- logy, Pediatrics, or Anatomy. The work is conceived for students and research workers in reproduction and in obstetrics and pediatrics on the one hand, and for chnicians in obstetrics and pediatrics on the other. Its aim is to establish a set of normal standards and values for mother, fetus, and newborn. The space available to the authors has enabled them to treat their subjects in depth and on a broad fundamental basis rather than from the limited specialist viewpoint. The various chapters will not be reviewed. The reader is referred to the tables of contents above. The books are well produced and well illustrated. Each chapter has its own bibliography; some of these are up to date until 1966, others even until 1967. Both volumes are concluded by author and subject indexes. 41 CELLULAR ASPECTS OF DEVELOPMENTAL PATHOLOGY 1967 By R. P. Bolande Lea & Febiger 374 pp., 125 figs. Philadelphia Price: $ 16.50 This book was written primarily for medical students, pathologists, and pediatricians. Adequate knowledge of general and special pathology is assumed. The book is not intended as a reference work on pediatric patho- logy; the treatment is selective rather than comprehensive, and the emphasis is on cellular, subcellular, and tissue morphology. An attempt was made to weave into the structure of the book many of the new concepts from developmental biology; in this respect, however, the book is disappointing, and one feels that the author would have done better to seek the advice or help of a specialist in developmental biology. The book is well organized. It starts with a chapter on the general nature of developing cells, tissues and organs, followed by a chapter on general reactions to injury. Then follows a chapter on neoplasia. The remaining chapters deal successively with genetic diseases of cells, metabolic, nutritional, and chemical injuries, infectious injury, and immune injury and allergic reactions. The book is illustrated with a large number of good photographs, many of which are original. Their reproduction is rather "gray", and there is sometimes considerable loss of cellular detail. Each chapter has its own extensive bibliography. The book is well printed and is concluded by a detailed subject index. 330 42 HANDBUCH DER UROLOGIE Vol. I. Anatomic und Embryologie 1969 By K. Conrad, H. Ferner, A. Gisel, Springer- Verlag H. V. Hayek, W. Krause, St. Wieser, Berlin - Heidelberg - New York and Chr. Zaki Price: DM 286.—; $ 71.50 637 pp., 363 figs. This is the first volume of an Encyclopedia of Urology that will ultimately encompass more than 20 volumes. We focus our attention on the first part of the present volume, "Die Entwicklung der Harn- und Geschlechtsorgane" by H. von Hayek, Vienna. The author states that the last comprehensive review of the embryology of the human urogenital system was that published by Felix in 1911. He has consequently re-examined the whole subject personally with the help of the extensive Hochstetter collection of serial sections of human embryos present in Vienna. His study covers the first 50 pages of the book, and contains 47 excellent figures (line drawings, photomicrographs, and reconstructions). Among them is a series of 10 photographs made by Hochstetter, showing the external development of the genitalia. The literature list consists of 81 titles, but strangely enough several references given in the text are missing in the bibliography. The book as a whole is beautifully produced, as is usual with this publisher. 43 THE ANATOMY OF THE DEVELOPING LUNG 1969 Editor: J. L. Emery Heinemann Medical Books Ltd. 223 pp., 103 figs., 6 tbs. London SBN 433 09300 5 Price: 55 s.; $ 7.— Contributors: Balis (Hines, 111.), Bucher (Bern), Conen (Toronto), Emery (Sheffield), Pagan (Sheffield), de Haller (Davos-Dorf), Heath (Liverpool), Ivemark (Stockholm), Lind (Stockholm), Mithal (Sheffield), Robertson (Stockholm) In this book no attempt is made to cover the whole anatomy of the lung or to compete with recent handbooks in this field. It brings together a number of contributions by persons working in the field of structural changes in the lung of the growing fetus and the newborn, in order to facilitate the correlation of physiological and anatomical data. Most of the authors are not anatomists, but paediatricians and pathologists. On account of the specialized nature of the book, its 1 1 chapters will not be reviewed in detail. The book is well printed and well illustrated. It is concluded by a combined author and subject index. 44 FEINSTRUKTUR DER PLAZENTA Elektronenoptische Untersuchungen iiber die reifende und reife Plazenta der Ratte 1969 By H. Franke VEB Gustav Fischer Verlag 340 pp., 19 figs., 5 tbs., 222 pis.. Jena 5 loose plates Price: MDN 129.50 This thorough work describes the ultrastructural organization of the rat placenta, with special reference to the changes in fine structure during the course of gestation. It is for the far greater part based on the author's own research, carried out in the framework of investigations on the embryonic 331 metabolism of the rat conducted at the Pathophysiological Institute of the University of Jena, D.D.R. The treatment concentrates on the structural findings; their interpretation is not always discussed exhaustively, the reader being referred to the relevant specialist literature. Of the six brief introductory chapters, one is a survey of the ultrastructural and functional organisation of animal cells in general, while another treats in detail the methods used in this investigation, which were elaborated particularly with the aim of obtaining large-surface longitudinal sections. The next five chapters deal with the structure of the 19-day placenta, used as a basis of reference for the other stages. The following zones are described consecutively: decidua basalis, giant cell zone, trophospongium, and laby- rinth. After a brief chapter on early development and placentation in murids, the same four zones are again taken up, this time with reference to the changes occurring between the 10th and the 22nd day of gestation. From chapter 7 onwards the major chapters each have a brief summary. More than half of the book is taken up by plates. The majority of these are full-page, often composite electron micrographs. Unfortunately their quality is not very good, which is probably largely due to unsatisfactory fixation of the material. In addition to the plates there are five large, loose out-folding plates, attached to the back cover of the book. The book is concluded by an extensive bibliography, with an appendix bringing it up to date until 1968, and a detailed subject index. 45 THYROIDE MATERNELLE ET DEVELOPPEMENT PRENATAL DU RAT 1968 By A. Gommers Editions Arscia S.A., Bruxelles 296 pp., 2.3 figs., 72 tbs., 32 pis. Librairie Maloine S.A., Paris Price: F 70.— The author of this monograph works at the University of Louvain, Bel- gium. The book is essentially an account of her own extensive experimental work on the rat, preceded by a thorough literature review. The original data are organized in four chapters, discussing successively: the influence of thyroid hormone on reproduction and on the survival and growth of the fetus; the influence of the thyroid state of the mother on carbohydrate metabolism of fetal tissues; the influence of thyroid hormone on oxygen consumption of fetal tissues; and the influence of thyroid hormone on dif- ferentiation (organogenesis and ossification). The book has a laudative preface by Prof. H. Tuchmann-Duplessis (Paris). It is well printed and illustrated with high-quality original photographs, and has an extensive bibliography. 46 HUMAN TROPHOBLAST 1968 By A. T. Hertig Charles C. Thomas 363 pp., 274 figs., 5 tbs. Springfield, 111. Price: $ 12.— Although this monograph was written primarily with pathologist and obstretician readers in mind, it will be received with great interest by human embryologists, because a large part of it is concerned with the normal trophoblast. We will mainly focus our attention on this part; it consists ol 1 ) a brief historical review, 2) a brief chapter on the origin of the trophoblast 332 (12 pp.), 3) an extensive chapter on the differentiation of the trophoblasi (92 pp.). an