Wenger 95 Williams 



WENGER, Mrs E. L. B.A., M.A., Ph.D. — Dept of Zool., Grad. School 

 of Arts and Sci., Washington Univ., Lindell and Skinker Aves, ST 

 LOUIS 5, Mo., U.S.A. 



a. Analysis of interrelations between parts of the embryonic spinal cord 

 by means of defect experiments. Gallus domesticus (Aves) 



b. Radio-active tracer study of amphibian eggs, with special reference to 

 organizer action, (in collaboration with F. MOOG) 



c. Studies on phosphorous metabolism of amphibian embryos by means 

 of P 82 . Rana pipiens (in collaboration with F. MOOG) 



d. Cytological and cytochemical studies of the developing chick duodenum. 

 Gallus domesticus (Aves) (in collaboration with F. MOOG) 



WESTHUIZEN, C. M. v. d. M.Sc. — Zool. Inst., Univ. of Stellenbosch, 

 STELLENBOSCH, South Africa, 

 a. Ontogenesis of the skull. Heleophryne purcelli (Anura, Amphibia) 

 WESTRA, S. — Anat.-Embryol. Lab., Oostersingel 69, GRONINGEN, 

 Holland, 

 a. Embryological development of the roof of the fourth ventricle in Man. 

 (Mammals) 

 WETMORE, R. H. Ph.D., D.Sc, Prof. — Biol. Lab's, Harvard Univ., 

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



a. Development in vascular plants, supported by studies in tissue culture, 

 grafting, regeneration and transplantation. On various species of ferns, 

 horsetails and Selaginella especially. 



b. Morphcgenetic factors concerned with early development of eggs and 

 spores in plants. In certain ferns and Selaginellas. 



WHITAKER, D. Dr, Prof. — Stanford Univ., PALO ALTO, Cal., U.S.A. 

 (no data received) 



WHITELEY, A. H. Ph.D., Prof. — Dept of Zool., Univ. of Washington, 

 SEATTLE 5, Wash., U.S.A. 

 a. Study of the importance of the phosphorylated compounds in the ener- 

 getic changes accompanying activation of the eggs of echinoderms. 

 Strongylocentrotus purpuratus 



WICKLUND, Miss E. Ph.lic. — Wenner-Grens Inst, for exper. Biol., 

 Norrtullsgatan 16, STOCKHOLM 23, Sweden, 

 a. On fertilizability of the egg under different conditions acting on sperm 

 and eggs. Psammechinus miliaris, Strongylocentrotus droebachiensis and 

 Arbacia lixula ( Echinodermata) 



WIERDA, J. L. B.S., M.S., Ph.D., Asst Prof. — Dept of Anat., School 

 of Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A. 

 a. Relation of diets to growth in length and weight of the gastro-intestinal 

 tract of the white rat. (Mammals) 



WILENS, Miss S. A.B. — Osborn Zool. Lab., Yale Univ., NEW HAVEN 

 11, Conn., U.S.A. 

 a. Vital staining of mesoderm and endoderm under the midbrain and hind- 

 brain and adjacent ventral regions. Amblystoma punctatum (Urodeles) 



WILLIAMS, R. G. A.B., M.A., M.D., Prof. — Dept of Anat., School of 

 Med., Univ. of Pennsylvania, PHILADELPHIA 4, Pa, U.S.A. 



a. Studies on growth of various implanted tissues with the rabbit's eat 

 chamber technique. (Mammals) (in collaboration with E. R. CLARK) 



b. Development of bone marrow in rabbit's ear tissue chambers. (Mammals) 

 (in collaboration with R. RHINES) 



