Sor-Sta 



b. Evolutionary morphogenesis. Drosophila melanogaster, D. subobscura 

 (Diptera) ^era^ 



c. Development and ageing. Drosophila melanogaster. D. subobscura (Dip- 

 SORIANO, L.I. M.D. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 



49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Seine). 

 France 

 a. Differenciation des epitheliums par la methode des dissociations et re- 

 associations en culture in vitro. Mus musculus (Rodentia) 



SOROKIN, S. P. A.B., M.D. — Dept. of Anat., Harvard Med. School, 25 

 Shattuck St., BOSTON 15. Mass., U.S.A. 



SOTTYnSKA (MARCINKOWSKA). Mrs. M. Mgr.of Sci. — Inst, of 

 Zool., Warsaw Univ.. WARSZAWA 64, Poland 

 a. Morphogenesis of spores. (Myxosporidia) 



SOUPART, P. M.D.. Ph.D. — Dept. of Obstetrics and Gynecol.. Vander- 

 bilt Univ. School of Med.. NASHVILLE. Tenn. 37203. U.S.A. 



a. Chemical composition and structure of the zona pellucida. (Mammalia) 



b. Studies on the nature of sperm capacitation. Oryctolagus cuniculus (La- 

 gomorpha) 



SOVA, J. MUDr.. C.Sc. — Inst, of Histol. and Embryol.. Fac. of Med.. 

 Charles Univ., Karlovarska 48. PLZEN, Czechoslovakia 

 a. Ontogeny and phylogeny of the processes in the apocrine type of secre- 

 tion. (Amniota) 



SPERRY, R. W .Ph.D., M.I.I.E. — Div. of Biol., California Inst, of Techno.. 

 PASADENA, Calif., U.S.A. 



SPIEGEL, Mrs.E.SCLUFER B.S., M.A.. Ph.D. — Dept. of Biol. Sci.. Dart- 

 mouth Coll., HANOVER, N.H., U.S.A. 



a. Protein changes in development. Lytechinus pictus, Strongylocentrotus 

 purpuratus (Echinoidea), Rana pipiens, R. catesbeiana (Anura) (in 

 collaboration with M.SPIEGEL) 



b. Role of enzyme induction in development. Rana pipiens, R. catesbeiana 

 (Anura) (in collaboration with M.SPIEGEL) 



c. Biochemistry of metamorphosis. Rana pipiens, R. catesbeiana (Anura) 

 SPIEGEL, M. B.S., Ph.D.. M.I.I.E.. Prof. — Dept. of Biol. Sci.. Dartmouth 



Coll.. HANOVER. N.H.. U.S.A. 



a. Protein changes in development. Arbacia punctulata, Lytechinus pictus, 

 Strongylocentrotus purpuratus (Echinoidea), Rana pipiens, R. catesbei- 

 ana (Anura) (in collaboration with Mrs. E.SCLUFER-SPIEGEL) 



b. Role of enzyme induction in development. Rana pipiens, R. catesbeiana 

 (Anura) (in collaboration with Mrs.E.SCLUFER-SPIEGEL) 



SPINNER, W. Cand.phil. — Zool.-vergl.Anat. Inst., Naturwiss. Fak„ 



Univ. Ziirich, Kiinstlergasse 16, ZURICH, Schweiz 

 SPIRITO. A. Dott., M.I.I.E., Prof. — 1st. di Biol, gener.. Fac. di Med., 



Via del Giochetto, PERUGIA, Italia 

 a. Origine e natura dei tumori. Bu[o spec. (Anura) 

 SPISAK (PLONKA). Mrs. I. M.Sc. — Dept. of Biol, and Embryol.. Acad. 



of Med., ul. Kopernika 7. KRAKoW. Poland 

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



Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y.. U.S.A. 



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

 (Urodela) 



b. Experimental neurogenesis. Ambystoma maculatum, (Urodela) 



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