Vann 93 Voy 



VANNINI, E. Dr, Prof. — 1st. di Zool. e Anat. comp., Via Universita 4. 

 MODENA. Italia 



a. Cycle of the nucleic acid.s and nucleolar change.s during oogenesis. 

 ( Echinodermata, Pisces and Amphibia) 



b. Development of the gonads and their embryological relations with the 

 cortico-adrenal blastema. (Amphibia, Aves and Mammalia) 



c. Experimental analysis of the causal development of the gonads. (Am' 

 phibia) 



d. Experimental regeneration and genesis of the germ-cells. (Polychaeta) 



e. Development of the gonads. Xenopus laevis (Anura) (Normal Table) 

 VASSEUR. E. J. E. Ph.D. — Wenner-Grens Inst, for experimental Biology, 



Norrtullsgatan 16. STOCKHOLM Va.. Sweden 

 (no data received on Nov. 1"*'. 1953) 



VERGROESEN, A. J. — Anat.-Embryol. In.st.. Municipal Univ. of Am- 

 sterdam, Maurit.skade 61, AMSTERDAM O, Holland 

 a. Experiments te-sting the role which different tissues play in accumula- 

 tion of a regeneration-blastema. (Urodela) (in collaboration with H. 

 A. L. TRAMPUSCH) 



VIGLIANI. F. Dr — Inst, of human Anat., Corso Massimo d'Azeglio 52, 

 TORINO. Italy 

 a. Late development and growth of bones, joints and muscles in mecha- 

 nically inert and denervated limbs. Canis familiaris (Carnivora) 



VILLAFRANCA, G. W. de Ph.D. — Dept of Zool.. Smith College, 

 NORTHAMPTON. Mass.. U.S.A. 



a. Studies of various enzyme fractions in developing mu.scle in relation to 

 the development of contractibility. Mus noruegicus albinus (Rodentia) 



b. Studies on the myosin proteins in the differentiation of muscle. Mus 

 norvegicas albinus (Rodentia) 



VINTEMBERGER. P. Dr Med.. Prof. — Inst. d'Embryol.. Fac. de Med., 

 7 Place de I'Hopital. STRASBOURG. France 

 a. Recherches sur le determinisme de la symetrie bilaterale chez les Ver- 

 tebres. (Amphibia) 

 VISSER. Miss P. J. — Anat.-Embryol. Inst.. Municipal Univ. of Amsterdam, 

 Mauritskade 61, AMSTERDAM O. Holland 

 a. Cytological analysis of regenerating limbs with particular regard to 

 pathological aspects of cell structures. (Urodela) (in collaboration with 

 H. A. L TRAMPUSCH) 

 VIVIER. Mi.ss F. — Lab. d'Histol.. Dep. d'Embryol.. Fac. de Med., 31 Rue 

 Lionnois, NANCY (Meurthe 6 Moselle), France 

 a. Proprietes mecaniques du cortex de I'oeuf. (Amphibia) (en collabo- 

 ration avec A. DOLLANDER) 

 VOGEL, N. W. — Dept of Zool., Indiana Univ.. BLOOMINGTON. Ind., 

 U.S.A. 

 a. The development of pituitary-gonad interactions. Gallus gallus (Avcs) 

 VOGT, Mi.ss M. M.D. — Hirnfor.schungs-Institut, NEUSTADT, Schwarz- 

 wald, Germany (present address: Dept of Biol., Calif. Inst, of Technol., 

 PASADENA 4, Gal.. U.S.A.) 

 (no embryological work planned for 1953) 

 VOY. A. Dr es Sci. — Lab. de Zool.. Fac. des Sci.. POITIERS. Vienne. 

 a. Croissance, regeneration. (Orthoptera) France 



