Runnstrom-Sau 



a. Induction phenomena in development. (Echinodermata) 



b. Physiology of fertilization. (Echinodermata) 



RUTH R F Dept of Embryo!.. Carnegie Inst, of Washington, Wolfe 



and Madison Sts. BALTIMORE 5. Md, U.S.A. 



a. Biochemical and immunochemical analysis of the synthesis and distri- 

 bution of the contractile proteins, actin, myosin (esp. H-meromyosin) 

 and tropomyosin in the development of the heart in the early embryo. 

 Gallus gallus (Aves) (in collaboration with J. D. EBERT) 



b. The metabolic characteristics of the heart-forming areas of the early 

 embryo. Gallus gallus (Aves) (in collaboration with J .D. EBERT) 



RUUD, Miss G. Cand.real. — Zool. Lab., Univ. of Oslo, OSLO-BLIN- 



DERN, Norway 

 RYCHTER. Z. MUDr — Dept of Anat., Charles Univ., U nemocnice 3, 



PRAHA II, Czechoslovakia 



a. Experimental morphology of the aortic arches and of the heartloop. 

 Gallus domesticus (Aves) 



b. Experimental analysis of cardiovascular anomalies. Gallus domesticus 

 (Aves) 



RYKE, P. A. J. M.Sc. Ph.D. — Dept van Dierkunde, Potchefstroom Univ., 

 POTCHEFSTROOM, Suid-Afrika 

 (no embryological work in progress) 

 SABBADIN, A. Dr — 1st. di Zool. e Anat. comp., Fac. di Sci., Via Loredan 

 10. PADOVA, Italia 

 a. Differentiation of gonads. (Reptilia) 



h. Gonad development. Influence of thyroidectomy and hypophysectomy; 

 role of mesonephros and adrenals. (Amphibia) 



c. Sexual and asexual reproduction. (Ascidiacea) 



SAKAI, H. M.A. — Embryol. Section, Dept of Biol., Tokyo Metropolitan 

 Univ., Setagaya-ku, TOKYO, Japan 

 a. The behaviour of glutathione and protein sulfhydryl groups during egg 

 cleavage. (Echinoidea) 

 SALA. M., S.J. Dr — 1st. di Zool. e Anat. Comp., Fac. di Sci., Via Lore- 

 dan 10, PADOVA, Italia 

 a. Distribution of activating and transforming principles in the archenteron 

 roof of the neurula (analysis of the regional induction of the nervous 

 system). Amby stoma mexicanum (Urodela) 

 h. Determination of the peripheral nervous system. (Anura) 

 SALFI, M. Dr Sci. Nat., Prof. — 1st. di Zool., Universita, Via Mezzocan- 

 none 8, NAPOLI, Italia 

 a. Blastogenesi. (Ascidiacea) 

 SALZGEBER, Miss B. Dr es Sci. — Lab. d'Embryol. exper. du Coll. de 

 France, et Lab. d'Embryol. et de Teratol. exper. du C.N.R.S., 11 Place 

 Marcelin Berthelot, PARIS Ve. France 



a. Recherches sur Taction d'agents physiques et chimiques sur la differen- 

 ciation sexuelle. 



b. Action de substances chimiques sur les gonades embryonnaires cultivees 

 in vitro. 



SAMANO BISHOP, Miss A. Dr — Inst, de Biol., Ciudad Universitaria, 

 MfiXICO D.F., Mexico 

 a. Origin and development of the acustic ganglia. Sceloporus microlepido- 

 tus (Iguanidae, Reptilia) 



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