Si 31 Step 



'SIEKERT, R. G. B.S., M.S., M.B., M.D., Prof. — Dep. of Anat.. 



Univ. of Pennsylvania, School of Med., Philadelphia 4, Pa, 



U.S.A. 

 'SILBERBAUER, Mrs B. I. B.Sc. — Dep. of Zool., Univ. of Cape 



Town, Cape Town, South Africa. 

 ♦SINCLAIR, }. G. B.S.. M.S., Ph.D., Prof. — Dep. of Anat., Med. 



Branch, Univ. of Texas, Galveston, Tex., U.S.A. 

 * SINGER, J. B.A. — Dep. of Aanat. and Embryol., Univ. Coll., Gower 



Str., London W.C. 1, England. 

 'SINGER, M. A.M., Ph.D., Prof. — Dep. of Anat., Harvard Med. 



School, 25, Shattuck Str., Boston 15, Mass., U.S.A. 

 *SINHA, T. P. B.S., M.S., M.D., Prof. — Dep. of Anat., Univ. of 



Pennsylvania, School of Med., Philadelphia 4, Pa, U.S.A. 

 'SIPPEL, Th. Grad.stud. — Osborn Zool. Lab., Yale Univ., New 



Haven, Conn., U.S.A. 

 'SLOTWlNSKI, J. Dr, Prof. — Inst. d'Histol. norm, et d'Embryol. 



de l'Univ. Poznari, ul. Swi^cickiege 6, Poznan, Pologne. 

 'SMRECZYnSKI, S. Ph.D. — Zool. Dep. of the Jagellonian Univ., 



Krakow/Cracow.', St Anne 6, Poland. 

 'SNELLEN, H. A. — Anat.-Embryol. Lab. der Rijks Univ., Boer- 



haavekwartier, Wassenaarseweg, Leiden, Holland. 

 'SNYDER, F. F. M.D., A.M., Prof. — Dep. of Anat., Harvard Med. 



School, 25, Shattuck Str., Boston 15, Mass., U.S.A. 

 'SOBELS, F. H. Drs — Zool. Lab., Janskerkhof 3, Utrecht, Holland. 

 ♦SODERWALL, A. L. Ph.D.. Prof. — Biol. Dep., Univ. of Oregon. 



Eugene, Ore., U.S.A. 

 'SOLEWSKI, W. — Zaklad Anat. Porownawczej U.J., im. H. Hoyera, 



ul. sw. Anny 6, Krakow, Polska (Poland). 

 SPEIDEL, C. C. Dr, Prof. — Dep. of Anat., Med. Coll., Univ. of 



Virginia, Charlottesville, Va, U.S.A. 

 SPIEGELMAN, S. Dr, Prof. — Dep. of Physiol., Div. of Cancer 



Biol., Univ. of Minnesota, Minneapolis 14, Minn., U.S.A. 

 SPIKES, J. D. Prof. — W. G. Kerckhoff Marine Lab., Calif. Inst. 



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

 SPIRITO, A. Prof. — 1st. di Biol, e Zool. gen., Perugia, Italia. 

 'SPRATT, Nelson T. A.B., Ph.D., Prof. — Dep. of Zool., Univ. of 



Minnesota. Coll. of Sci., Lit. and Arts, Minneapolis 14, Minn., 



U.S.A. 

 *STARCK, D. Prof. — Anat. Inst, der Univ.. Ludwig Rehnstr. 14, 



Frankfurt/Main, Deutschland. 

 *STEFANELLI, A. Dr, Prof. — 1st. di Zool., Univ. di Stato, Viale 



S. Bartolomeo, Cagliari, Sardegna, Italia. 

 •STEINER, H. Ph.D., Prof. — Zool.-vergl. Anat. Inst, der Univ., 



Kunstlergasse 16, Zurich 6, Schweiz. 

 *STELT, v. d. — Zool. Lab., Univ. van A'dam, Plantage Doklaan 44, 



Amsterdam, Holland. 

 'STEPHAN, F. Lie. es Sc. — Lab. d'Embrvol. et Teratol. exper. de 



l'Univ. et du C.N.R.S.. Inst, de Zool. et de Biol, gen., 12, Rue 



de l'Univ., Strasbourg, France. 

 'STEPHENSON, N. G. M.Sc. — Auckland Univ. Coll., New Zea- 

 land, Australia. 



