WALLACE, H. M.A., D.Phil. — Inst, of Animal Genet., Univ. Dept. of 

 Genet., King's Buildings, West Mains Road, EDINBURGH 9, Scotland 



a. A study of the nucleolus during development. Xenopus laevis (Anura) 



b. Embryology. (Ascidiae) 



WALLACE, R. A. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK 

 RIDGE, Tenn., U.S.A. 

 a. Studies on yolk. Triturus spec, Rana spec. (Amphibia) (in collaboration 

 withS. KARASAKI) 



WARKANY, J. M.D., M.I.I.E., Prof. — Children's Hosp. Research Founda- 

 tion, Elland Ave. and Bethesda, CINCINNATI 29, Ohio, U.S.A. 



a. Experimental production of congenital heart defects. Rattus norvegicus 

 albinus (Rodentia) 



b. Chromosomal studies of tissues of embryos rendered abnormal by terato- 

 genic agents. Rattus norvegicus albinus (Rodentia) 



c. Experimental production of congenital malformations by thalidomide. 

 Histologic studies. Oryctolagus cuniculus (Lagomorpha) 



WARTENBERG. H. Dr.med. — Anat. Inst, der Univ., Univ.-Krankenhaus 

 Eppendorf, Martinistr. 52, HAMBURG 20, Deutsche Bundesrepublik 



a. Histologische, histochemische und elektronenmikroskopische Untersu- 

 chungen am Ovarialei, vor allem Untersuchungen uber die Struktur und 

 den Chemismus der Rindenhaut und der subkortikalen Granula. Triturus 

 alpestris (Urodela) , Xenopus laevis, Rana temporaria, R. esculenta (Anu- 

 ra) 



b. Elektronenmikroskopische und histochemische Untersuchungen an Oozy- 

 ten, Oozytenentwicklung und Primitiventwicklung. Homo sapiens (Prima- 

 tes) (in Zusammenarbeit mit H.-E. STEGNER) 



c. Elektronenmikroskopische Untersuchungen uber die Vitellogenese. (Am- 

 phibia) 



WASSETZKY, S. Y. — Inst, of Animal Morphol., Acad, of Sci. of the 



U.S.S.R., First Academic St. 12, MOSCOW V-133, U.S.S.R. 

 a. Termosensibility of oocytes and eggs during metaphases of maturation 



and cleavage divisions. Acipenser guldenstadti, A. stellatus (Chondros- 



tei) , Misgurnus fossilis (Cobitidae, Teleostei) 

 WATANABE, H. Ph.D. — Inst, of Zool., Tokyo Kyoiku Univ., Otsuka-Kubo- 



machi 24, Bunkyo-ku, TOKYO, Japan 

 a. Colony-specificity and selective fertilization in compound forms. Botryl- 



lus primigenus (Ascidia) (in collaboration with H. OKA) 

 WATANABE, T. Dr. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, 



KOBE, Japan 

 a. Thermal influence upon the development of the early embryo. Triturus 



spec, Hynobius spec, Bufo spec, Rana spec. (Amphibia) 

 WATERMAN, Allyn J. B.A., M.A., Ph.D.. M.I.I.E., Prof. — Dept. of Biol., 



Williams Coll., WILLIAMSTOWN, Mass., U.S.A. 



a. Development of structure and function of the thyroid-hypophysis and 

 neuro-secretory system, (higher Vertebrata) 



b. Development of the thyroid gland. Myxine glutinosa (Myxinoidea, Cy- 

 clostomata) , (Elasmobranchii) 



WATTERS, Chr. D. — Dept. of Biol., Princeton Univ., BOX 704, PRINCE- 

 TON, N.J., U.S.A. 

 a. Studies of embryonic cells in tissue culture. (Amphibia) 



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