c Morphology and causal biochemistry of striated muscle differentiation. 

 Ambijstoma maculatum (Urodela) 



d. Continuous flow curtain electrophoresis of molecular constituents of 

 specific embryonic anlagen and cell types. Fraction recovery and tissue 

 culture of embryonic cells in the presence of selected fractions. Ambysto- 

 ma maculatum (Urodela) 



e. Cytochimeras in tissue culture from disaggregated cells of embryos of 

 different classes. Gatlus spec. (Aves), Mus spec. ( Rodentia) 



f. Role of probablistic processes in cellular differentiation. Gallus spec. 

 (Aves), Mus spec. (Rodentia) 



g. Ontogeny of proteins and amino acids. Fundulus heteroclitus (Teleostei) 

 WILENS, Miss S. W. A.B. — Dept. of Zool. (Osborn Zool. Lab.), Yale 



Univ., NEW HAVEN 11, Conn., U.S.A. 



a. The movements of the entoderm in early stages studied with the use of 

 vital dyes. (Urodela) 



b. Development of the gut and associated structures. Ambystoma punctatum 

 (Urodela) 



WILKINSON, W. J. C. M.B., Ch.B. — Dept. of Anat, Fac. of Med., Univ. 

 of Sheffield, SHEFFIELD, England 

 a. Chemical basis for the intracellular location of polysaccharides. (Mam- 

 malia) 



WILLIAMS, C. M. M.I. I.E. — Bid. Lab., Harvard Univ., Divinity Ave., 

 CAMBRIDGE 38, Mass., U.S.A. 



WILLIAMS. Miss D. R. B.S., M.S. — Dept. of Embryol., Div. of Biol, Cal- 

 ifornia Inst, of Technol., PASADENA 4, Cal., U.S.A. 



a. Tissue culture of fertilized eggs and cumulus cells along with early 

 cleavage stages. Mus musculus (Rodentia) 



b. Fertilization by intraperitoneal injection of gonadotropin solutions. Mus 

 musculus (Rodentia) 



WILLIAMS, J. B.Sc, M.B., Ch.B. — Dept. of Biochem., Univ. of Cam- 

 bridge, Tennis Court Road, CAMBRIDGE, England 



WILLIER, B. H. B.S., Ph.D., Sc.D., F.I.I.E., Prof. (Emer.) — Dept. of 

 Biol., Johns Hopkins Univ., Charles and 34th Sts., BALTIMORE 18, 

 Md., U.S.A. 

 a. Histochemical study of the yolk sac membrane, a living transitory organ 

 in which yolk substances are metabolized and/or transported to the 

 growing embryo via the blood circulation. Gallus spec. (Aves) 



WILSON, J. G. Ph.D., Prof. — Dept. of Anat., Coll. of Med., Univ. of Flo- 

 rida, GAINESVILLE, Florida, U.S.A. 



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

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

 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 

 metamorphosis. (Anura) 



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

 velopment. Gallus domesticus (Aves) 



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

 cus (Aves) 



151 



