b Analysis of ribosomal gene amplification in oocyte development with respect to uni- and 



multinucleolate forms. Asterias torbesii (Asteroidea), Arbacia punctulata (Echinoidea) . 



Roccus saxatilis, Fundulus hetecoclitus (Teleosfei) 

 VISCUSO. Miss R. Dr. — 1st. di Zool., Univ. di Catania, Via Androne 81, 95124 



CATANIA. Italy , _ 



a Physiological and experimental embryology of the earliest developmental stages. t,ypre- 



pocnemis plorans (Orthoptera) oT^Trr r cm 



VISSER. M. H. C. M.Sc. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STbLLbM- 



BOSCH, S.Africa 

 a General ontogeny. Gonaxis givandaensis (Streptaxidae, Pulmonata) 

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



Archirafi 20, 90123 PALERMO, Italy 



(no embryological work in progress) 

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



12 rue de I'Universite, STRASBOURG, France 

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



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

 a Asexual reproduction; development of larval stages. Hymenolepis. Mesocestoides (Cestoda) 

 h Growth requirements in vitro. (Cestoda) 

 VOLKOVA Miss L. S. Dr.Med.Sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the 



U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. 

 a Peculiarities of the development of foetuses and isoserological characteristics of multiple 



births. Homo sapiens (Primates) 

 h Experiments with new methods of immunoprophylaxis of hemolytic disease in newborns: 



1) use of phenomena of immunological tolerance. 2) transamnion blockage of immune 



antibodies of maternal blood. Rattus nocvegicus (Rodentia). Papio hamadryas (Primates) 

 VOLLRATH, L. Priv.Doz., Dr.med. — Anat. Inst, der Univ., Koellikerstr. 6, 87 WuRZ- 



BURG, W.Germany 

 a Development of the small intestine under normal and experimental conditions (histology, 



histochemistry, electron microscopy; absorption of fat, carbohydrates and protein in the 



fetal bowel; enzyme induction). Rattes norvegicus (Rodentia) 

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



U.S.A. ^ , 



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



tolerance. Rana pipiens (Anura) 

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



cultured leucocytes. Rana pipiens (Anura) 

 c Histocompatibility studies in animals produced by nuclear transplantation. Rana pipiens 



(Anura) (in collaboration with R. G. McKINNELL) 

 VYAZOV, O E. Dr.med. sci.. Prof. — Dept. of Exper. Embryol., Inst, of Exper. Biol., 



Acad, of Med. Sci of the U.S.S.R., Baltiyskaya St. 8. MOSCOW A-315, U.S.S.R. • 

 WADA, K. M.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., Hakozaki, FUKUOKA, 812 



Japan 

 a Regulation of ribosomal RNA synthesis during embryonic development. Xenopus laevis 



WADA, S. Dr.rer.nat. — Zool. Inst., Univ. Dusseldorf, Mettmannerstr. 16-18, 4'DUSSEL- 

 DORF, W.Germany .^. , , ,.. 



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; Am- 

 phibia) (in collaboration with J. JACOB and Miss M. M. PERRY) 



b Development of imaginal buds. Drosophila spec. (Diptera) (in collaboration with Mrs. E. 

 ROBERTSON (PATON)) ^ ^ ^ , i 



c Ultrastructural changes during growth. Micrasterias thomasiana ( Desmidoidea, Conjugates) 

 (in collaboration with Miss M. M. PERRY) 



d Electron microscope studies of mutants. Drosophila spec. (Diptera) (in collaboration with 

 Miss M. M. PERRY) ^^,wcv 



e Computer simulation of biological patterns, (in collaboration 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 temp- 

 eratures. Oncorhynchus tshawytscha, Salmo gairdnerii (Teleostei) 



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

 of Med., Yeshiva Univ., Eastchester Rd. 6 Morris Park Ave., NEW YORK, Bronx, 

 N.Y. 10461. U.S.A. • 



a Developmental physiology. Mus musculus (Rodentia) 



h 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 



181 



