VITTORELLI, Miss M. L. Dr.Biol.Sci. — 1st. di Anat. Comp., Univ. di Palermo, Via 

 Archirafi 20, 90123 PALERMO, Italy 



a Fusion of blastomeres. Paracentrotus lividus (Echinoidea) 



VIVIEN, J. H. Dr.es Sci., Prof. — Lab. de Zool. et d'Embryol. Exp., Univ. de Strasbourg, 

 12 rue de l'Universite, 67 STRASBOURG, France 



VOGE Mrs M. Ph.D., Prof. — Dept. of Med. Microbiol, and Immunol., Sch. of Med., 

 Univ. of California, LOS ANGELES, Calif. 90024, U.S.A. 



VOLLMAR, H. Dr.rer.nat. — Biol. Inst. I (Zool.) der Univ., Katharinenstr. 20, 78 FREI- 

 BURG. W.Germany 



a Embryonic determination. Acheta domesticus (Orthoptera) 



b Morphogenetic movements during early embryogenesis. Same species as a 



VOLLRATH, L. Priv.Doz., Dr.med. — Dept. Anat., King's College, Univ. of London, 

 Strand, LONDON WC2R 2LS, England 



a Development of the intestine, especially differentiation of cell organelles (histology, histo- 

 chemistry, electron microscopy) . Rattus norvegicus (Rodentia) 



VOLPE, E. P. Ph.D., Prof. — Dept. of Biol., Tulane Univ., NEW ORLEANS, La. 70118, 



U.S.A. t * 



a Neural crest homotransplantation and its relation to the phenomena of immunity and 



tolerance. Rana pipiens (Anura) 

 b Blood cell chimerism in parabiotic animals, as revealed in chromosome preparations of 



cultured leucocytes. Same species as a 

 c Histocompatibility studies in animals produced by nuclear transplantation. Same species 



as a 

 d Role of the thymus in the development and maintenance of immunity. Same species as a 

 VOORHEES, F. R. Ph.D. — Dept. of Biol., Knox College, GALESBURG, 111. 61401, U.S.A. 

 a Development of the reproductive system. Aedes stimulans and other spp. (Diptera) 

 VREEZEN, Miss W. J. Drs. — Dept. of Genet., Univ. of Leiden, Kaiserstr. 63, LEIDEN, 



Netherlands 

 a Selection on asymmetrical development of bristle patterns. Drosophila melanogastet 



(Diptera) ' 



VRIES, O. M. H. de Drs. — Lab. of Bot., Rijksuniversiteit Groningen, Kerklaan 30, Postbus 



14, HAREN (Gr.), Netherlands 

 a Biochemistry of wall formation, using extracts and protoplasts. Schizophyllum commune 



Basidiomycetae, Fungi) 

 VYAZOV O. E. Dr.med.sci.. Prof. — Lab. of Embryol., Inst, of Human Morphol.. Acad, of 



Med. Sci. of the U.S.S.R., Baltiyskaya St. 8, MOSCOW 125315, U.S.S.R. • 



a Development of tissue antigens during eye lens, retina, and kidney development. Gallus 



domesticus (Aves), Mus musculus (Rodentia) 

 b Humoral interconnections between analogous organs (brain, lung, reticulo-endothelial and 



leucopoietic system) of mother & foetus. Rattus norvegicus (Rodentia) 

 VYSE. E. R. Ph.D. — Developm. Biol. Lab. and Center for Pathobiol.. Univ. of California, 



IRVINE, Calif. 92664. U.S.A. 

 a Selection and biochemical analysis of auxotrophic mutants. Drosophila melanogastet 



(Diptera) 

 WADA. S. Dr.rer.nat. — Zool. Inst., Univ. Diisseldorf, Mettmanner Str. 16-18, 4 DUSSEL- 



DORF, W.Germany 

 a Morphogenesis of the compound eyes. (Arthropoda) 

 WADDINGTON, C. H. D.Sc, Prof. — Inst, of Anim. Genet., Univ. of Edinburgh, West 



Mains Rd., EDINBURGH EH9 3JN, Scotland. U.K. • 



a Study of certain features of developing embryos by electron microscopy. (Diptera; 



Amphibia) (with J. JACOB and M. M. PERRY) 

 b Development of imaginal buds. Drosophila spec. (Diptera) (with E. ROBERTSON) 

 c Ultrastructural changes during growth. Micrasterias thomasiana (Desmidiaceae) (with G. G 



SELMAN) 

 d Electron microscopy of mutants. Same species as b (with M. M. PERRY) 

 e Computer simulation of biological patterns (with R. COWE) 

 WADLEY, G. W. B.S. — Lab. of Radiat. Ecol., Coll. of Fish., Univ. of Washington, 108 



Fisheries Center. SEATTLE. Wash. 98105, U.S.A. 

 a Effects of ionizing irradiation on different stages of embryos developing at different 



temperatures. Oncorhynchus tshawytscha, Salmo gairdnerii (Teleostei) 

 WAELSCH. Mrs. S. GLUECKSOHN Ph.D., Prof. — Dept. of Genet., Albert Einstein Coll. 



of Med., Yeshiva Univ., Eastchester Rd. & Morris Park Ave., NEW YORK, Bronx, 



NY. 10461, U.S.A. • 



a Developmental physiology. Mus musculus (Rodentia) 

 b Developmental genetics. Mus musculus (Rodentia) 

 c Developmental pathology. Mus musculus (Rodentia) 

 WAIDYASEKERA. P. L. D. Ph.D. — Dept. of Biol. Sci.. Fac. of Sci., Vidyodaya Univ., 



Gangodawila, NUGEGODA, Ceylon 



188 



