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) 



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