a. A study of mitotic activity and other cytological phenomena in liver 

 regeneration. (Vertebrata) 

 WILT, F. H. Ph.D. — Dept. of Biol. Sci., Purdue Univ., LA FAYETTE, 

 Ind., U.S.A. 



a. Mechanism of thyroxin-stimulated visual pigment conversion during meta- 

 morphosis. (Anura) 



b. Mechanism of origin of hemoglobin-synthesizing machinery during dev- 

 elopment. Gallus domesticus (Aves) 



c. Enzymatic induction of tyrosinase in skin in vitro. Gallus domesti- 

 cus (Aves) 



d. Activation of protein and RNA synthesis in cleaving eggs. Strongylo- 

 centrotus purpuratus (Echinoidea) 



WIMSATT, W. A. A.B., Ph.D., M.I.I.E., Prof. — Dept. of Zool., Cornell 



Univ., ITHACA, N.Y., U.S.A. 

 a. Comparative placentation, structural and functional. (Reptilia; Mamma- 

 lia) 

 WINDLE, W. F. B.S., M.S., Ph.D., Sc.D. — Lab. of Perinatal Physiol., 



N.I.N.D.B., Nat. Inst, of Health, BETHESDA, Md., and SAN JUAN, 



Puerto Rico, U.S.A. 

 WINGSTRAND, K. G. Dr.phil., Prof. — Inst, of Comp. Anat., Universitets- 



parken 3, COPENHAGEN 0, Denmark 

 a. Embryology. Armillifer spec. (Linguatulida) (in collaboration with A. 



N0RREVANG) 

 WISCHNITZER, S. B.A., M.S., Ph.D. — Dept. of Anat., Flower and Fifth 



Ave. Hosps., New York Med. Coll., 106 St. and Fifth Ave., NEW YORK 



29, N.Y., U.S.A. 

 a. Electron microscopic study of oogenesis. Triturus viridescens (Urodela), 



Gallus domesticus (Aves) , Mus albicans (Rodentia) 

 WITKAM, W. G. M. Med.Drs. — Lab. for Anat. and Embryol., R.K. Univ., 



Kapittelweg 40, NIJMEGEN, Netherlands 

 a. Experimental hypoplasia of the cerebellum induced by X-rays. Mus rattus, 



Cavia porcellus (Rodentia) 

 WITSCHI, E. Ph.D., M.D.L.c, F.I.I.E., Prof. — Anat. Inst, der Univ., Pes- 



talozzistr. 20, BASEL, Schweiz 



a. Embryology of human hermaphroditism. Homo sapiens (Primates) 



b. Artresia in the human ovary. Homo sapiens (Primates) 

 WOELLWARTH, C. v. Dr.phil., M.I. I.E. — Heiligenberg-Inst., HEILI- 



GENBERG 7799, Baden, Deutsche Bundesrepublik 

 WOERDEMAN.M.W. M.D., D.Sc, Ph.D..F.I.I.E. (Emer.) — Botticellistr 

 10, AMSTERDAM Z. 2, Netherlands 



a. Lens regeneration. (Aves; Mammalia) 



b. Development of specific substances during induction and regeneration. 

 (Amphibia; Aves) 



WOLFF, Mrs. Em. Dr. es Sci. — Lab. d'Embryol. et Teratol. exper. du 

 C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne (Sei- 

 ne), France 



— Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Ber- 

 thelot, PARIS Ve, France 

 a. Recherches sur la differenciation in vitro des caracteres sexuels em- 

 bryonnaires (gonades, canaux de Miiller etc.) et de differents organes. 

 Besoins nutritifs des organes en culture. (Amniota) 



179 



