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



PASADENA, Calif., U.S.A. 

 SPRATT, N. T., Jr. A.B., Ph.D., M.I.I.E., Prof. — Dept. of Zool., Coll. of 



Biol. Sci., Univ. of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. 

 STEIN Miss K. F. A.B., M.S., Ph.D., Prof. — Clapp Lab. Mount Holyoke 



Coll., SOUTH HADLEY, Mass. 01075, U.S.A. 

 STRAHAN, R. M.Sc. — School of Biol. Sci., Univ. of New South Wales, 



Box 1, Post Office, KENSINGTON, N.S.W., Australia 

 SZENTAGOTHAI, J. M.D., Prof. — Anat. Inst., Med. Univ., Tuzolto u.58, 



BUDAPEST IX, Hungary 

 TARTAR. V. B.Sc, M.S., Ph.D., Prof. — Field Lab., Univ. of Washington, 



R. 1 Box 132 N, NAHCOTTA, Wash., U.S.A. 

 THIEBOLD, J. J. Dr.es Sci. — Lab. de Zool. Gener., Univ. d' Alger, ALGER, 



Algerie 

 TSCHUMI. P. A. Dr.. Prof. — Zool. Inst, der Univ. Bern, Sahlistrasse 8, 



BERN, Schweiz 

 VINCENTIIS, M. de M.I.I.E., Prof. — Cattedra di Istol. ed Embriol., Univ. 



di Camerino. CAMERINO, Italia 

 WEHRMAKER, A. Dr.rer.nat. — Dept. of Biol.. Dalhousie Univ., HALI- 

 FAX, N.S.. Canada 

 WEISS, P. A. Ph.D., M.D. (Hon.c). M.I.I.E., Prof. — Office of the Dean, 



Graduate School of Biomed. Sci.. Hermann Professional Bldg., Suite 238. 



HOUSTON, Texas 77025, U.S.A. 



— private address: 1400 Hermann Drive, HOUSTON, Texas 77004, 



U.S.A. 

 WILSON. J. G. B.A., M.A.. Ph.D., Prof. — Dept. of Anat., Coll. of Med.. 



Univ. of Florida, GAINESVILLE, Fla., U.S.A. 



