Sinclair 81 Snc 



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 truncatus, 

 Orytolagus cuniculus, Mus musculus and Homo (Mammalia) 



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

 N.Y., U.S.A. 

 a. Regeneration. Ameiurus nebulosus (Pisces) 

 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. — Osborn Zool. Lab.. Yale Univ., NEW HAVEN 

 11, Conn., U.S.A. (no data received on Nov. 1^*. 1952) 



SIRLIN', J. L. Grad.Biol.Sc. — Central de Investig., Minist. de Salud Piibl. 

 de'la Nacion, Bolivar 1128, BUENOS AIRES. Argentina, 

 a. Action of ACTH on development. Bufo arenarum (Anura) 

 h. Induction of lens by normal eyecup. Bu[o arenarum (Anura) 



c. Mucopolysaccharides in development. Bu[o arenarum (Anura) 



d. Origin of sympathetic ganglia. Bufo arenarum (Anura) 



SKREB, N. DrMed. — Inst, de Biol., Fac. de Med., Salata, ZAGREB. 



Yougoslavie. 

 a. Cytologic 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. 



Poznan, ul. Swiecickiego 6. POZNAN, Pologne. 



(no data received over some years) 

 SMIT, A. L. M.Sc. — Zool. Inst., Univ. of Stellenbosch, STELLEN- 



BOSCH, S. Africa, 

 a. Ontogenesis of the vertebral column. Xenopus laevis (Anura) 

 SMITHBERG. M. Ph.D. — Roscoe B. Jackson Mem. Lab., BAR HARBOR, 



Me, U.S.A. 



a. Maternal influences upon prenatal development. Mus musculus 

 (Rodentia) 



b. Factors influencing survivability of transplanted ova. Mus musculus 

 (Rodentia) 



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

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

 a. The origin of the tail, determined by use of vital stains; defect; isolation 

 of primordia; transplantation of primordia of the tail forming area of 

 the neurula stage. Rana pipiens (Anura) 



SMRECZYnSKI. S. Ph.D. — Zool. Dept of the Jagellonian Univ.. KRA- 

 KOW (Cracow). St Anne 6. Poland, 

 a. Determination of early developmental stages. Agelastica alni (Coleop- 

 tera) 

 (this work is temporarily in abeyance) 



SNELLEN, H. A. Med. Dr — Anat.-Embryol. Lab. of the Univ., Fac. of 

 Med., Wassenaarseweg, Boerhaavekwartier, LEIDEN, Holland, 

 (no data received on Nov. 1**, 1952) 



