Sou-Ste 



SOUNHEIN. E. A.B. — Dept of Zool., Univ. of Calif.. LOS ANGELES 



24, Cal.. U.S.A. 

 a. Macroniolccular transfers from the blood of the mother to that of the 



embryo. Gallus domcsticus (Aues) 

 SPIEGEL. M. B.S., Ph.D. — Dept of Embryol.. Div. of Biol., Cahf. Inst. 



of Technol.. PASADENA 4, Cal.. U.S.A. 



a. Physiology of fertilization. (Echinoidea) 



b. Physiology of early development. (Porifera. Echinoidea) 



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

 PERUGIA. Italia 

 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, 766 Irving Ave, SYRACUSE 10, N.Y., U.S.A. 

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



(Urodela) 

 h. E.xperimental 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 blasto- 

 derms). Gallus domesticus (Aves) 



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

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

 mesticus (Aves) 



c. Regeneration. Planaria spec. (Turbellaria) and Tubularia spec. (Coe- 

 lenterata) 



d. Cytological study of the developmental center (organizer). Gallus (Aves) 

 SRINIVASACHAR. H. R. B.Sc, M.Sc. — Dept of Zool.. Central College. 



BANGALORE 1, India 

 a. Development of chondrocranium — basis for classification and evolution. 

 (Pisces) 

 SRIVASTAVA, M. D. L. D.Sc F.N.A.Sc. — Dept of Zool.. Allahabad 

 Univ., ALLAHABAD. India 



a. Experiments on the Wolffian regeneration of the lens. Rana tigrina 

 (Anura) 



b. Effects of thermal shock on the embryonic development. Rana tigrina 

 (Anura) 



STARCK, D. F.I. I.E., Dr med., o. Prof. — Dr Senckenberg. Anat. Inst.. 



Med. Fak. der Univ.. Ludwig Rehnstr. 14, FRANKFURT/Main-Sud, 



Deutschland 

 STARK. O. J. Dr rer.nat. — Zool. Inst, der Univ., Katharinenstr. 20, FREI- 

 BURG i. Brsg. Deutschland 

 STEFANELLI, A. F.I. I.E., Dr, Prof. ord. — Lab. di Istol. ed Embriol. della 



Fac. di Sci., Univ. di Roma, Via Borelli 50. ROMA, Itaha 

 a. Histogenetic determination and differentation of nervous cells, (Teleostei, 



Amphibia and Aves) 

 h. Degeneration and regeneration of nervous cells. (Teleostei, Amphibia 



and Aves) 

 STEIN. Miss K. F. A.B.. M.S.. Ph.D. — Mount Holyoke Coll.. SOUTH 



HADLEY. Mass., U.S.A. 



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