Willier 94 Witt 



c. The role that sex and other hormones play in modifying the phenotypic 

 expression of melanoblasts in color pattern formation. Gallus domesticus 

 (various varieties) (Aves) 

 WILSON J. W. Ph.D. Prof. — Arnold Biol. Lab., Brown Univ., PROVI- 

 DENCE 12, R.I., U.S.A. 

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

 regeneration. (Vertebrata) 

 WINBLAD. J. A.B. — Dept of Anat., Univ. of Kansas, Med. School, 

 LAWRENCE. Kan., U.S.A. 



a. Development of all systems in relation to behavior. Opsanus tau (Pisces) 

 (in collaboration with H. C. TRACY and TH. BATTY) 



b. Pharmacodynamics of development. Opsanus tau (Pisces) 

 WINDLE. W. F. B.S., M.S.. Ph.D.. Sc.D., Prof. — Baxter Laboratories, 



MORTON GROVE, 111., U.S.A. 

 •^ — (as Visiting Research Professor) Dept of Anat., Univ. of Pennsyl- 

 vania, School of Med., PHILADELPHIA 4, Pa, U.S.A. 



a. Factors influencing regeneration of nerve fibers in the central nervous 

 system of adult animals. Felis domestica (Carnivora) and (Anthto- 

 poidea) (in collaboration with J. L. LITTRELL and E. G. STUART) 



b. Growth and regeneration of the severed spinal cord in embryos. Gallus 

 domesticus (Aves) (in collaboration with J. L. LITTRELL and E. G. 

 STUART) 



WINGSTRAND, K. G. Fil. he. — Embryol. Dept, Zool. Inst., Univ. of 



Lund, LUND, Sweden. 



(no data received on Nov. !«', 1952) 

 WINOWSKA, Mrs J. M.Sc. — Zaktad Anat. Porownawczej, Inst. Zool. 



Uniw., ul. Sienkiewicza 21, WROCLAW. Poland, 

 a. Development of the air-bladder. (Euphysoclisti, Teleostei) 

 WIRTH, Miss P. B.S. — Dept of Biol. Sci.. Univ. of Pittsburgh, PITTS- 

 BURGH 13, Pa, U.S.A. 



(no data received over some years) 

 WISLOCKI, G. B. F.I.I. E., M.D., A.M., Sc.D., Prof. — Dept of Anat., 



Harvard Medical School, 25 Shattuck Str., BOSTON 15. Mass.. 



U.S.A. 



(no embryological work in progress) 

 WITSCHI. E. F.i.I.E., Ph.D.. Prof. — Dept of Zool., State Univ. of Iowa. 



IOWA CITY, Iowa. U.S.A. 

 a. Metabolism of normal and overripe eggs. (Anura) 

 h. Malformations. (Vertebrata) 



c. Sex differentiation (normal and experimental). Rana, Bufo, Alytes and 

 Xenopus (Anura) 



d. Parabiosis and hormones in sex differentiation. Triturus torosus (Uro- 

 dela) 



e. Metamorphosis of the ear. (Anura) 



f. Embryologic and endocrine studies in adreno-gonadal relationships. 

 (A^mphibia, Aves, Mammalia) 



g. Nutritional conditions in the incubating egg. (A.ves) 



WITTEK, Miss M. — Lab. d'Anat. et d'Embryol., Fac. de Med. de I'Univ., 

 97 Rue aux Laines, BRUXELLES, Belgique. 

 a. Oogenesis. Lacerta vivipara and other species (Reptilia) (under direc- 

 tion of J. J. PASTEELS) 



