Sno 82 Spr 



SNOOK T B Sc M.Sc, Ph.D. — Dept of Anat.. School of Med., Univ. 

 of Pittsburgh, PITTSBURGH 13, Pa, U.S.A. 



a. Studies on the development of the spleen. Homo (Primates) 



b. The relation of reticulum to epidermis in the developing hoof. Sus 

 (Artiodactyla) 



c. Correlation of nerve endings in muscle with observed foetal activity. 

 Homo (Primates) 



SNYDER F. F, M.D., A.M., Prof. — Dept of Obstetrics and Anat., Har- 

 vard' Med. School. 25 Shattuck Str., BOSTON 15. Mass., U.S.A. 



a. Action of analgesic agents on fetal respiration — Meperidine and levo- 

 isomethadone. Lepus cuniculns L. (Rodentia) 



b. Antidotal action of N-allylnormorphine to depression of fetus by mor- 

 phine, meperidine, levo-isomethadone. Homo sapiens (Primates) 



SOBELS, F. H. DrSc. — Genet. Inst, der Rijks Univ., Stationsstraat 9, 

 UTRECHT, Holland, 

 a. Genetics and developmental physiology of a polygenically determined 

 mutant type ,, Asymmetric" with special reference to its abnormal abdo- 

 men character. Drosophila melanogaster Meigen (Insecta) 

 h. Developmental genetics of mutants. Drosophila melanogaster Meigen 

 (Insecta) (in collaboration with N. O. van DORP van VLIET, Mrs 

 J. FLORSCHilTZ-de WAARD and W. van UTRECHT) 

 SOMMELET, J. — Lab. d'Anat., Inst. Anat., Fac. de Med., 31 Rue Lion- 

 nois. NANCY (Meurthe & Moselle), France. 

 a. Organogenese de I'articulation du poignet. Homo (Primates) (en colla- 

 boration avec A. A. BEAU et J. CAYOTTE) 

 SPAR I. L. B.S. — Dept of Biol., Coll. of Arts and Sci., Univ. of Rochester, 

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

 a. Antigenic differences among early embryonic stages. Rana pipiens pipiens 

 (Anura) 

 SPIEGEL M. B.S. — Dept of Biol., Coll. of Arts and Sci., Univ. of Roches- 

 ter, ROCHESTER 3, N.Y., U.S.A. 



a. Enzymatic digestion of the vitelline membrane and jelly. Rana pipiens 

 pipiens (Anura) 



b. The action of specific antisera on cell affinity. Rana pipiens pipiens 

 (Anura), (Porifera) 



SPIRITO, A. Dott., Prof. — 1st. di Biol, gen., Fac. di Med., S. Pietro, 



PERUGIA, Itaha. 

 a. Origine e natura dei tumori. Bufo (Anura) 

 SPOFFORD W. R. Ph.D.. Prof. — Dept of Anat., School of Med., State 



Univ. of New York, SYRACUSE 10, N.Y., U.S.A. 



a. Induction and determination in the neural plate. Ambystoma maculatum 

 (Urodela) 



b. Experimental neurogenesis. Ambystoma maculatum (Urodela) 

 SPRATT Jr, N. T. A.B., Ph.D.. Prof. — Dept of Zool., Coll. of Sci., Lit. 



and Arts, Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. 



a. Investigating the nutrient requirements essential to morphogenesis and 

 growth in the early stages of development (pre-streak and streak blas- 

 toderms). Gallus domesticus (Aves) 



b. Survey of dehydrogenase enzymes in early embryos: 1. Locahzation of 

 enzyme activity. 2. Structural integrity and enzyme activity. Gallus 

 domesticus (Aves) 



