Si 9 -Sob 



SIGOT M. Lie. cs Sci. — Lab. de Zoo!.. Inst, de Zool. et de Biol, gen., 

 Fac. des Sci.. 12 Rue dc I'LInivcrsitc. STRASBOURG. France 

 a. Etude biochimiquc du developpement de I'intcstin; constitution et fonc- 

 tionncment cn-ymatique. Gallits (Aves) 



SILfiN, L. K. P. Fil.Dr — Zootom. Inst.. Univ. of Stockholm. 116 Drott- 

 ningqatan. STOCKHOLM. Sweden 



SILVER." P. H. S. Ph.D. — Anat. Dept, Middlesex Hosp.. Med. School. 

 LONDON W. 1. England (U.K.) 

 a. Development of pelvic viscera. Homo (Primates) 



SINGER. M. A.M.. Ph.D.. Prof. — Dept of Zool.. Cornell Univ.. ITHA- 

 CA. N.Y.. U.S.A. 



SINHA. T. P. B.S.. M.S.. M.B.. Prof. — Dept of Anat.. Prince of Wales 

 Med. Coll.. BEHAR. Patna. India 



SIMON. Mrs D. — Lab. de Zool. Inst, de Zool. et de Biol. gen.. Fac. des 

 Sci.. 12 Rue de I'Universite. STRASBOURG. France 

 a. Explantation in vitro de jeunes embryons et etude des besoins nutri- 

 tifs necessaires a leur survie. leur diffcrenciation et leur croissance par 

 des aliments naturels et synthetiqucs entrant dans Ics milieux de culture. 

 Galliis (Aves) 



SINCLAIR. J. G. B.S.. M.S.. Ph.D.. Prof. — Dept of Anat.. Med. Branch. 

 Univ. of Texas. GALVESTON. Tex.. U.S.A. 



a. Effects of urethane on reproduction and on the young across the placenta. 

 Mus musculas (C57 and CBA strains) (Rodentia) 



b. Anterior cerebral nerve plexus in adult and fetus. Tursiops truncatus, 

 Orijctolagus cuniculus. Mas musculus and Homo (Mammalia) 



c. Continued study of developmental anomalies. Brain. Heart. Mus muscu- 

 lus and Homo (Mammalia) 



d. Continued study of transplacental effects of urethan. Mus musculus 

 (Rodentia) 



e. Developmental pattern and mechanism of iris and ciliary body. Tursiops 

 truncatus, Orijctolagus cuniculus, Mus musculus and Homo (Mammalia) 



SIPPEL. T. O. A.B., Ph.D. — Dept of Biol.. The Johns Hopkins Univ.. 

 Charles and 34th Sts. BALTIMORE 18. Md. U.S.A. 

 a. Differentiation in respiratory metabolism of developing heart: respiration, 

 anaerobic glycolysis, cytochrome system. Gallus domesticus (Aves) 

 SIRAKAMI, K. I. M.A. — Biol. Dept. Yamanashi Univ.. KOFU. Japan 

 a. Cell division of isolated blastomeres. Triturus pijrrhogaster. Bufo vulgaris 

 (Amphibia) 

 SIRLIN. J. L. Dr Nat. Sci. — Inst, of Animal Genet.. Univ. Dept of Genet., 

 King's Buildings. West Mains Rd. EDINBURGH 9. Scotland (U.K.) 



a. Differentiation of protein and nucleic acids in embryos. (Amphibia) 

 (partly in collaboration with C. H. WADDINGTON and F. BIL- 

 LETT) 



b. Organ-specific transfer in embryos. (Amphibia) (in collaboration with 

 T. ELSDALE) 



c. Investigation of early embryonic development, using radioactive tracers. 

 Mus musculus (Rodentia) (in collaboration with R. G. EDWARDS) 



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

 slavie 

 a. Cytologie et cytochimie des premiers stades du developpement. Rhino- 

 lophus, Miniopterus (Chiroptera) 



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