VALDEZ de MORENO. Mrs. C. L. — Inst, de Biol., Fac. de Bioquim., Quim. y Farmacia. 



Univ. Nac. de Tucuman, Buenos Aires 289, TUCUMAN, Argentina 

 a Biological properties of fertilizin. Bufo arenarum (Anura) 

 VANABLE, J. W., Jr. Ph.D. — Dept. of Biol. Sci., Purdue Univ., LAFAYETTE. Ind. 



47907. U.S.A. 

 a Thyroxin control of skin gland development: the origin of the gland rudiments; the control 



of the decision to produce mucous or granular secretion. Xenopus laevis (Anura) 

 VAN ALTEN, P. J. Ph.D.. Prof . — Dept. of Anat., Coll. of Med.. Univ. of Illinois, 1853 



W. Polk St., CHICAGO, 111. 60612, U.S.A. 

 a Development of the digestive tract. Gallus domesticus (Aves) 

 h Ontogeny of the immunological mechanism. Gallus domesticus (Aves) 



• VANDEBROEK, G. D.Sc. Prof. — Lab. d'Embryol., Inst, de Zool., Univ. de Louvain. 59 



Rue de Namur, LOUVAIN, Belgique 

 VANDERHAEGHE (HOUGARDY), Mrs. F. Dr.en Sci. — Station de Zool. exper., Univ. 



de Geneve, Route de Malagnou 154, Chene-Bougeries, GENEVE. Suisse 

 VAN HORN, Mrs. S. N. Ph.D., Prof. — Dept. of Zool.-Entomol.. Montana State Univ.. 



BOZEMAN, Mont. 59715, U.S.A. 

 a Maternal environmental inter-relationships with embryonic developmental rate. Autocars 



elliotti (Orthoptera) 

 b Embryonic neuroendocrine functions. Aulocara elliotti (Orthoptera) 



• VANNINI, E. Dr.. Prof. — 1st. di Zool., Fac. di Sci., Univ. di Bologna, Via S. Giacomo 



9. BOLOGNA, Italia 

 a Experimental analysis of the development of the gonad and Bidder's organ. Bufo spec. 



(Anura) 

 h Inhibition by actinomycin D of testosterone-induced sex-reversal in tadpoles. Rana dal- 



matina (Anura) 

 c General study of the problem of the "sex gradient" in various hermaphrodite animals. 



(Hydroidea; Tricladidea, Turbellaha; Serpulidae, Polychaeta) 

 VAN VALEN, Mrs. Ph. Ph.D. — Dept. of Biol. Scis., Univ. of Illinois at Chicago Circle, 



Box 4348, CHICAGO, 111. 60680. U.S.A. 

 a Developmental studies of mutants, especially oligosyndactylism, funnytail, and a prenatally 



lethal allele of the dilute locus. Mus musculus (Rodenfia) 

 VANZULLI, Mrs. A. B.Sc. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de Clinicas, 



MONTEVIDEO, Uruguay 

 a Regulation of cochlear input in the embryo. Gallus domesticus (Aves) 

 VARMA, H. C. Ph.D.. Prof. — Dept. of Anat.. Motilal Nehru Med. Coll.. ALLAHABAD-1, 



India 

 a Structure and composition of the amnion, including its histochemistry and ultrastructure. 



Rattus norvegicus (Rodentia), Lepus cuniculus (Lagomorpha) 

 b Mechanism of transport of substances across the chorio-amnion. Rattus norvegicus 



(Rodentia), Lepus cuniculus (Lagomorpha) 

 c Development of the ear. Homo sapiens (Primates) 

 VARMA. Miss S. K. M.Sc — Dept. of Zool., Univ. of Udaipur. UDAIPUR. Rajasthan. 



India 

 a Comparative morphological and histochemical studies on the developing and postovulatory 



follicles in the ovary (enzymes, lipids). (Pisces; Anura; Reptilia; Aves; Rodentia) 

 VASSETZKY, S. G. Cand.Biol.Sci. — Inst, of Developm. Biol., Acad, of Sci. of the 



U.S.S.R.. Vavilov St. 26, MOSCOW V-133, U.S.S.R. 

 a Dynamics of meiosis in oocytes. Acipenser giildenstadti, A. stellatus (Chondrostei), Mis- 



gurnus fossilis (Cobitidae, Teleostei) 

 h Production of diploid gynogenesis by means of heat treatment of oocytes at the first 



maturation division and of chemical treatment (with nitrogen mustard) of sperm. Acipenser 



giildenstadti, A. stellatus (Chondrostei) 

 VAUGHN, J. E. Ph.D. — Dept. of Anat., School of Med., Boston Univ.. 15 Stoughton St., 



BOSTON. Mass. 02118, U.S.A. 

 a Electron microscopic study of the formation of myelin sheaths and development of neuro- 

 glial cells in the central nervous system. Rattus domesticus (Rodentia) 

 VAUPEL, M. R. Ph.D. — Dept. of Anat.. Tulane Univ., NEW ORLEANS, La. 70118, 



U.S.A. 

 VENEZIANO, P. P. Ph.D. — Dept. of Biol.. Wright Coll., 3400 N.Austin Ave., CHICAGO. 



111. 60634. U.S.A. 

 a The effect of low intensity magnetostatic fields on the iron, copper, cobalt and magnesium 



content of the 2 and 3 day blastoderm. Gallus domesticus (Aves) 

 h The effect of magnetic fields on growth and orientation of germinating seed root. 



Raphanus sativus 

 VENZKE, W. G. Ph.D., Prof. — Dept. of Veter. Anat., Coll. of Veter. Med., Ohio State 



Univ., 1900 Coffey Road., COLUMBUS, Ohio 43210, U.S.A. 

 a Morphogenesis and physiology of pineal gland. (Aves) 

 h Morphogenesis and physiology of blood. (Aves) 

 c Experimental morphology of pineal gland. (Bovidae, Mammalia) 



154 



