a Studies on insulin in the developing pancreas. Gallus domesticus, Columba livia (Aves), 



Rattiis norveyicus, Cavia cobaya (Rodentia) 

 COCK. A. G. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON. Hamp- 

 shire, 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 

 a Antero-posterior and medio-lateral gradients in induction capacity of the archenteron roof 



of the early neurula. Xenopus laevis (Anura) 

 COHEN, Ph. P. Ph.D., M.D., Prof. — Dept. of Physiol. Chem., Univ. of Wisconsin, Med. 



Scis. Bldg., 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., School 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) 



h Studies of tooth development. Mus musculus (Rodentia) 



c Histologic and histochemical studies of the periodontium. Mus musculus (Rodentia) 



COLEMAN, R. D. D.D.S.. Prof. — Dept. of Dental Anat., School of Dentistry, Univ. of 

 California Med. Center, 3rd and 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 defic- 

 iency of folic acid) . Rattus noruegicus (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 norue- 

 gicus (Rodentia) 



COLLE (VANDEVELDE), Mrs. A. M.D. — Lab. of Anat., Fac. of Med., Univ. of Gent. 

 Ledeganckstraat 35, GENT, Belgium 



a Development of blood and blood-vessels. Gobius niger, G. paganellus, Lepadogasfer 

 candollii (Pecciformes) , Syngnathus typhle, Nerophis ophidion (Syngnathiformes, Tele- 

 ostei) 



b Development of pharynx. Brachydanio rerio (Cyprinifocmes), Betta splendens (Perci- 

 formes, Teleostei) 



c Foetal endocrinology by means of organotypical culture. Mus musculus (Rodentia) 



COLLENOT, A. Dr.es Sci. — Lab. d'EmbryoL, Fac. des Sci. de Paris, 9 quai Saint-Bernard, 

 PARIS Ve, France 



a Ontogenese sexuelle. (Amphibia; Mammalia) 



h Steroides sexuels et ontogenese sexuelle (histochimie). (Amphibia; Mammalia) 



c Genes lethaux et developpement. Pleurodeles waltlii (Urodela) 



COLLIER. J. R. Ph.D., Prof . — Dept. of Biol., Brooklyn Coll., Bedford Ave. & Ave. H, 

 BROOKLYN, N.Y. 11210. U.S.A. 



a Nucleic acid and protein synthesis of the embryo, with particular interest in the trans- 

 cription 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 obsoleta (Gastropoda) 



COLLIN, J.-P. D.E.S. — Lab. de Biol. Anim., 1 Avenue Vercingetorix, 63 CLERMONT- 

 FERRAND, France 



a Developpement de I'epiphyse (microscopie electronique). (Reptilia; Aves; Mammalia) 



COLLINI, Miss R. Dr. — 1st. di Zool., Univ. di Milano, Via Celoria 10, MILANO, Italia 



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.sc, Prof. — 1st. di Istol. ed Embriol.. Fac. di Sci.. Univ. di Perugia. 



Via A. Fabretti, PERUGIA, Italia 

 COLOMBO, L. Dr.biol.sci. — 1st. di Zool., Anat. comp. e Genet., Fac. di Sci.. Via Loredan 

 10, PADOVA. Italia 



• COLWIN, A. L. Ph.D.. Prof. — Dept. of Biol.. Queens Coll.. FLUSHING, L.I., 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; sperm- 

 blastomere association (living material and electron microscope studies). (Enteropneusta; 

 Echinodermata; Annelida, etc.) (in collaboration with Mrs. L. H. COLWIN) 



• COLWIN, Mrs. L. HUNTER Ph.D., Prof. — Dept. of Biol.. Queens Coll.. FLUSHING, 



L.I.. N.Y. 11367. U.S.A. 



33 



