MASUI, Y. D.Sc — Dept. of Biol., Osborn Memorial Lab., Yale Univ., 

 NEW HAVEN, Conn.06520, U.S.A. 



RAWLES (SPURBECK), Mrs. M. E. Ph.D., M.I.I.E. — R.F.D. Route 3, 

 Box 109A, EMPORIA, Va. 23847, U.S.A. 



SAUNDERS, J. W. B.S., M.S., Ph.D., M.I.I.E., Prof. — Lab. of Anat., 

 School of Veter. Med., Univ. of Pennsylvania, PHILADELPHIA, 

 Pa.19104, U.S.A. 



SOLOMON, J. B. Ph.D. — Dept. of Microbiol., Univ. of Adelaide, ADE- 

 LAIDE, S.Australia 



STEINBERG, M. S. B.A., M.A., Ph.D., Prof. — Dept. of Biol., Princeton 

 Univ., Box 704, PRINCETON, N.J.08540, U.S.A. 



fVAINIO, E. T. M.D. — Lab. of Exp. Embryol., Dept. of Physiol. Zool., 

 Univ. of Helsinki, Arkadiankatu 7, HELSINKI, Finland 

 (deceased) 



fWEBER, A. M.I.I.E., Prof. (Emer.) —Lab. de Neurohistol., Inst. d'Anat., 

 Fac. de Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENEVE, 

 Suisse 

 (deceased) 



WEBSTER, G. C. B.Sc. Ph.D. — Strangeways Research Lab., Wort's 

 Causeway, CAMBRIDGE, England 



WILLIAMS, Mrs. M. LYMAN B.S., M.D. — Dept. of Publ. Health, Phila- 

 delphia General Hosp., 34th St. and Curie Ave., PHILADELPHIA, 

 Pa.19104, U.S.A. 



WOLPERT, L. B.Sc, D.I.C., Ph.D., Prof. — Dept. of Biol, as appl. to 

 Med., Middlesex Hosp. Med. School, LONDON W.l, England 



YOUNG, B. A. M.B., B.S., Ph.D. — Dept. of Anat., Med. School, Univ. of 

 Birmingham, Edgbaston, BIRMINGHAM 15, England 



ZIMMERMANN, W. Dr.rer.nat. — Arbeitsgruppe G. H. M. Gottschewski, 

 Max-Planck-Inst. fur Immunbiol., Stefan Maier Strasse 8, 78 FREI- 

 BURG i.Br., Deutsche Bundesrepublik 



