c The action of morphogenetic agents on embryonic cell behavior in vivo and 1 n 

 vitro. Gallus domesticus (Aves) 



WETHERBEE, D. K. Ph.D., Prof. — Dept. of Forestry and Wildlife Biol., Univ. of Mas- 

 sachusetts, AMHERST. Mass., U.S.A. 



a Ancestors and embryos; relationship between ontogeny and phylogeny. (Aves) 



b Inhibition of reproductivity. (Aves) 



WEYGOLDT, P. Dr. — I. Zool. Inst, der Freien Univ. Berlin, Konigin-Luise-Str. 1-3, BER- 

 LIN-Dahlem, Deutsche Bundesrepublik 



WHALEY, W. G. Ph.D., Prof. — The Cell Research Inst.. The Univ. of Texas, AUSTIN. 

 Tex. 78712, U.S.A. 



a Development and differentiation in apical meristems. 



b Embryogenesis. Zea mays 



c Structure, differentiation, and functioning of the Golgi apparatus. 



WHARTON, L. R., Jr. M.D. — Dept. of Gynecol, and Obstet., School of Med., Johns 

 Hopkins Univ., BALTIMORE, Md. 21205, U.S.A. 



a The effect of norethindrone given during pregnancy on the development of the repro- 

 ductive tract of the female fetus. Macaca mulatta (Primates) 



WHITE, R. H. Ph.D. — Dept. of Biol. Sci., Purdue Univ.. LAFAYETTE, Ind. 47907, U.S.A. 



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



Wash. 98105, U.S.A. 

 WHITING, H. P. Ph.D. — Dept. of Zool.. Univ. of Bristol, BRISTOL 8, England 

 WHITTAKER, J. R. Ph.D. — The Wistar Inst., 36th St. at Spruce, PHILADELPHIA, Pa. 



19104. U.S.A. 

 a Biochemical analysis of differentiation and metaplasia of embryonic eye tissues cultured 



in vitro. Gallus domesticus (Aves) 

 h Melanin biosynthesis and cell regulatory mechanisms in differentiating pigment cells, dona 



intestinalis, Styela spec. ( Ascidiae ) , Gallus domesticus (Aves) 

 c Characterization of specific gene expression by primary and established cell cultures. 

 WIDERSTEN. B. Fil.lic. — Zool. Inst., Univ. of Uppsala. Villavagen 9. UPPSALA, Sweden 

 a Larval development. (Scyphozoa) 

 WIERTZ (HOESSELS), Mrs. E. L. M. J. Ph.D. — Veter. Anat. and Embryol. Inst., State 



Univ. of Utrecht, Bekkerstraat 141, UTRECHT, Netherlands 

 a Photographical series of organ development. Domestic animals (Mammalia) 

 b Experiments on neural induction and pattern formation of rhombencephalic and anterior 



spinal cord region. Gallus domesticus (Aves) 



• WIGGLESWORTH, Sir V. B. Dr.. Prof. — A.R.C. Unit of Insect Physiol.. Dept. of 



Zool.. Univ. of Cambridge. Downing St., CAMBRIDGE. England 

 a Mode of action of growth hormones. Rhodnius prolixus (Triatomidae, Hemiptera) 

 WILD. A. E. Ph.D. — Dept. of Zool.. University of Southampton, SOUTHAMPTON, 



Hampshire, England 

 a Protein transmission across foetal membranes. Orqctolagus cuniculus (Lagomorpha) 

 WILDE, A. G. de M.D.. Ph.D., Prof . — Dept. of Anat. and Embryol.. State Univ. of 



Groningen. Oostersingel 69. GRONINGEN, Netherlands 

 a Development of palatal shelves; a descriptive morphological and experimental study. 



Rattus norvegicus albinus (Rodentia) 



• WILDE, C. E., Jr. Ph.D.. Prof . — Dept. of Biol.. Grad. School of Arts and Sci.; Lab. of 



Histol. and Embryol., School of Dental Med.. Univ. of Pennsylvania. PHILADELPHIA, 



Pa. 19104, U.S.A. 

 a Organogenesis in vitro (limb bud, gills, cranial neural crest). Ambystoma maculatum 



(Urodela) 

 b Cellular differentiation (pigment cell; ectomesenchyme). Ambystoma maculatum (Urodela) 



1. causal biochemistry of cellular differentiation. 



2. differentiation of cytoplasmic fragments. 



c Morphology and causal biochemistry of striated muscle differentiation. Ambystoma 



maculatum (Urodela) 

 d 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. 



Ambystoma maculatum (Urodela) 

 t Cvtochimeras in tissue culture from disaggregated cells of embryos of different classes. 



Gallus 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) 

 h The energy pathways of differentiating systems. (Vertebrata) 

 i Informational macromolecules in early development and differentiation. ( Echinodermata, 



(Vertebrata) 

 WILDE, J. de Ph.D., Prof. — Lab. of Entomol.. Agricult. Univ.. Binnenhaven 7, P.O.B. 62, 



WAGENINGEN, Netherlands 

 WILDERMUTH, H. Dipl.Sc.Nat. — Zool-vergl. Anat. Inst.. Naturwiss. Fak.. Univ. Zurich. 



Kunstlergasse 16. 8006-ZuRICH, Schweiz 



160 



