Sir-Spr 



SIRIIN I L Dr Nat.Sci. — Inst, of Animal Genet., Univ. Dept of Genet.. 

 'Kind's Buildings, West Mains Rd. EDINBURGH 9, Scotland 

 a. Differentiation' of protein and nucleic acids in embryos. (Diptera, Am- 



pfiibia. Aves) 

 b Transfer of substances during induction. (Amphibia) (in collaboration 



with S. K. BRAHMA) 

 c. Investigation of gametogenesis and of early embryonic development using 

 radioactive tracers. Mus musculus (Rodentia) (in collaboration with R. 

 G. EDWARDS) 

 d Metabolism of radio-isotopes. Triturus spec. (Urodela) (in collaboration 

 with C. H. WADDINGTON) 

 SKINNER. J. H. M.Sc. — Zool. Inst., Univ. of Stellenbosch, STELLEN- 

 BOSCH, South Africa 

 a. Ontogenesis of the shoulder-girdle and sternum. Microsaura pumila 

 (Laccrtilia) 

 SKREB. N. M.D., D.Sc. — Inst, de Biol., Fac. de Med., Salata, ZAGREB, 

 Yougoslavic 

 a. Experimental studies on early development. 1. Intrauterine injections of 

 isotonic solutions of LiCl. 2. Transplantation of the blastocyst in differ- 

 ent transfer media (with LiCl). Rattus noruegicus albinus (Rodentia) 

 (in collaboration with Miss B. LEVAK) 

 SLABY, O. Dr, Dr. Prof. — Inst, of Histol. and Embryol., Fac. of Med.. 

 Charles Univ., Karlovarska ul. 48. PLZEN, Czechoslovakia 



a. The development of the skull. (Amniota, including Homo sapiens) 



b. The development of the limbs. (Amniota, including Homo sapiens) 



c. The development of the nasal cavity. (Amniota, including Homo 

 sapiens) 



SLADECEK. F. D.Sc. — Dept of Gener. and Exper. Zool., Zool. Inst, of 

 Charles Univ., Vinicna 7, PRAHA II. Czechoslovakia 



a. Regulation of central nervous system in early development. Relations 

 between morphological and functional regulation (development of moti- 

 lity). Amby stoma mexicanum. Triturus taeniatus, T. alpestris (Urodela) 



b. Induction with haploid inductors in diploid hosts and vice versa. Am- 

 bystoma mexicanum (Urodela) 



SLIJPER. E. J. Dr, Prof. — Zool. Lab. der Univ., Plantage Doklaan 44. 

 AMSTERDAM C, Holland 

 a. The embryonic bloodcirculation (ductus Botalli, ductus Arantii etc.) 

 (Cetacea) 

 SLIPKA, J. Dr. Dr — Inst, of Histol. and Embryol.. Fac. of Med.. Charles 

 Univ., Karlovarska 48. PLZEN. Czechoslovakia 

 a. The development of the branchial region. (Amniota. including Homo 



sapiens) 

 h. The morphogenesis of the tongue from the standpoint of evolutionary 

 morphology. (Amniota. including Homo sapiens) 

 SMALL. Miss J. E. Ph.D. — Dept of Zoology. Yale Univ.. NEW HAVEN, 

 Conn.. U.S.A. 

 a. The capacity of tissue cells to differentiate after prolonged growth i n 

 vitro. Gallus domesticus (Aves) 

 SMET. W. M. A. De Lic.Zool.Sci. — Kasteellei 57. BRASSCHAAT. Bel- 

 gium 



— Inst, de Zool.. Univ. de Louvain. 71 Rue de Namur. LOUVAIN. 

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