IGNATJEVA, Mrs. G. M. Cand.biol.sci. — Inst, of Developm. Biol.. Acad, of Sci. of the 



U.S.S.R.. Vavilov St. 26, MOSCOW V-133, U.S.S.R. 

 a Regional induction capacities of the chorda-mesoderm. Huso huso, Acipenser gilldenstadti, 



A. stcllatus (Acipenscridac. Chondrostei) 

 b Dynamics of gastrulation movements. ( Acipenseridae, Chondrostei; Urodela) 

 c Investigation of the relative duration of embryonic periods in connection with the morpho' 



genetic function of yolk. Misgurnus iossilis, Esox lucius. Carassius carassius and other 



spp. (Teleostei) 

 IKEDA, Miss M. Ph.D. — Embryol. Sect., Dept. of Biol., Fac. of Sci.. Tokyo Metropolitan 



Univ., 950 1-chome, Fukaza-machi, Setagaya-ku, TOKYO, Japan 

 a UV-irradiation and SH radicals in eggs. Hemicenfrotus 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 

 a Mechanism of gastrulation (experimental morphology). Hynobius spec. Triturus spec. 



(Urodela) 

 b Protoplasmic connection in colonial forms (experimental morphology). Volvox spec. 



(Mastigophora) 

 IMAIZUMI, T. D.Sc. — Zool. Inst., Fac. of Sci., Univ. of Kyoto. Sakyo-ku, KYOTO, Japan 

 a Studies on the hereditary lethals. Drosophila spec. (Diptera) 



IMMERS, J. Fil.Dr. — Wenner-Grens Inst, for exper. Biol.. Norrtullsgatan 16, STOCK- 

 HOLM Va., Sweden 

 a Biochemical factors in development, particularly the role of mucopolysaccharides 



(Echinoidea) 

 b Protein biosynthesis. Paracentrotus lividus. Sphaerechinus granularis. Echinus esculentus, 



Psammechinus miliaris (Echinoidea) 

 c Changes in interaction between proteins and nucleic acid in the course of early develop- 

 ment. Paracentrotus lividus, Psammechinus miliaris (Echinoidea) 

 INCE. Miss F. E. M.Sc. — Dept. of Zool., Bedford Coll., Regent's Park, LONDON N.W.I. 



England 



(no embryological work in progress) 

 INGEN, Miss H. C. van Med.Drs. — Dept. of Radiol.. Fac. of Med., State Univ. of Leiden. 



Wassenaarseweg, LEIDEN, Netherlands 

 INOUE, S. D.Sc. — Dept. of Comp. Endocrinol., Inst, of Endocrinol., Gunma Univ., Showa- 



-machi. MAEBASHI, Japan 

 lOANNOU, J. M. Ph.D. — Dept. of Anat., Med. School, Univ. of Birmingham, Edgbaston. 



BIRMINGHAM 15, England 

 a Oogenesis. Cavia cobaya (Rodentia) 



b Fine structure and metabolic activity of oogonia and oocytes. Cavia cobaya (Rodentia) 

 c Effects of radiation on oogenesis. Cavia cobaya (Rodentia) 



• ISHIDA. J. D.Sc. — Zool. Inst., Fac. of Sci., Tokyo Univ., Bunkyo-ku, TOKYO, Japan 

 ISHIKAWA. M. D.Sc. — Marine Biol. Station, Nagoya Univ., Sugashima-cho, TOBA, 



Mie-ken, Japan 

 a Physiological studies on fertilization and artificial parthenogenesis. Hemicentrotus pulcher- 

 rimus. Pseudocentrotus depressus (Echinoidea) (in collaboration with M. SUGIYAMA) 

 ISHIZAKI, H. D.Sc — Lab. of Developmental Biol., Zool. Inst., Fac of Sci. Univ. of 



Kyoto, KYOTO. Japan 

 a Purification of the brain hormone. Bombyx mori (Lepidopfera) 

 b Ultrastructural and biochemical studies on prothoracic gland. Samia cynthia ricini (Lepid- 



optera) 

 ISLAM, A. Ph.D. — Government College, ISLAMABAD, p.o. Shaigan, Pakistan 

 ISONO, N. Ph.D. — Embryol. Sect., Biol. Dept., Fac. of Sci., Tokyo Metropolitan Univ., 



950 1-chome, Fukaza-machi. Setagaya-ku, TOKYO, Japan 

 a Carbohydrate metabolism of eggs. Hemicentrotus pulcherrimus (Echinoidea) 

 b Acid soluble nucleotides of eggs and sperm. Hemicentrotus pulcherrimus (Echinoidea) 

 no. I. M.D. — Natl. Cane Centre Hosp.. Tsukiji 5 chome, Chuoku, TOKYO, Japan 

 lUCIF, S. Ph.D. — Dept. de Morfol. Humana Funcional e Aplicada, Fac. de Med. de 



Ribeirao Preto, Univ. de Sao Paulo, Caixa Postal 301, SAO PAULO, S.P., Brasil 

 a Allometric growth of the skull and the dental arch. (Rodentia) 

 b Allometric growth of thyroidectomized animal. Rattus raftus (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. 

 a Descriptive and comparative embryology. (Hymenoptera; Diptera), (Ascidiacea, Phyro- 



somida, Tunicata) 



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