Sine 8^ ^"^'^^^ 



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

 Un.v. of Texas. GALVESTON. Te.x.. U.S.A. 

 a. Early embryos, structure, conditions of implantation. Homo (Primates) 

 b Effects of urethane on reproduction and on the young across the pla- 

 centa. Mus musculus (C57 and CBA strains) (Rodentia) 



c. Anterior cerebral nerve plexus in adult and fetus. Tursiops tmncatus, 

 Oryctolagus cuniculus, Mus musculus and Homo (Mammalia) 



d. Continued study of developmental anomalies. Brain. Heart. Mus mus- 

 culus and Homo (Mammalia) 



c. General review of urethan mechanism of action. 



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

 (Rodentia) 

 SINGER M. A.M., Ph.D.. Prof. — Dept of Zool., Cornell Univ., ITHACA, 

 N.Y.. U.S.A. 



(no data received on Nov. 1". 1953) 

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

 Med. Coll., PATNA, Behar, India 

 (no data received over some years) 

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

 BALTIMORE 18. Md, U.S.A. 

 a. Metabolic differentiation in relation to the sensitivity of gene action 

 to X-irradiation. Drosophila melanogaster (Diptera) 

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

 goslavie 

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

 lophus, Miniopterus (Chiroptera) 

 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, Mammalia) 

 SLOTWInSKI, J. Dr, Prof. — Inst. d'Histol. norm, et d'Embryol. de I'Univ. 



Poznaii, ul. Swiecickiego 6. POZNAN, Pologne 

 SMITH. A. S. A.B. — Dept of Zool., Univ. of Calif., LOS ANGELES 24. 

 Cal., U.S.A. 

 a. Induction of neural plate by dead and modified embryonic tissues. 

 (Amphibia) (in collaboration with A. M. SCHECHTMAN) 

 SMITH. Miss B. T. — Dept of Biol., Hamilton Coll.. McMaster Univ.. 

 HAMILTON, Ontario. Canada 

 a. Survey of the embryonic development. Petromyzon marinus (Cyclos- 

 tomata) 

 SMITH. S. M.A.. Ph.D. — Dept of Zool., Univ. of Cambridge, Downing 

 Street, CAMBRIDGE, England (U.K.) 



a. Weight of egg influencing time sequences of metabolism. Salmo Irideus 

 (Teleostei) 



b. Anterior-posterior reversal of archenteron roof at gastrula stage. Triturus 

 alpestris, Ambystoma mexicanum (Urodela) 



SMITHBERG.M. A.B. (Biol.) — Dept of Biol.. Coll. of Arts and Sci.. Univ. 

 of Rochester. ROCHESTER 3, N.Y., U.S.A. 

 (no data received on Nov. 1", 1953) 



