Pon-Pre 



PONTIER, J. Lic.es Sci. — Lab. de Zool. exper., Fac. des Sci. de Lyon, 43 



Bd. de I'Hippodrome. VILLEURBANNE. France 

 a. Analyse factorielle appliquee a I'etude de la morphogenese. Myzus persi- 



cae (Aphididae, Rhynchota) 

 POPOV, V.V. Dr.. Prof. — Dept. of Embryol., Fac. of Biol., Moscow Univ., 



MOSCOW V-234, U.S.S.R. 



a. Developmental physiology of the sense organs, and the significance of 

 irritability for the evolution of morphogenesis. 



b. Significance of the morphogenetic properties of the layers of the retina for 

 the development of the dioptric system of the eye. 



c. The relationship of cellular and subcellular components in cornea induc- 

 tion. (Anura) 



POPP, R.A. Ph.D. — Biol. Div., Oak Ridge National Lab., P.O.Box Y, 

 OAK RIDGE, Tenn., U.S.A. 

 a. Ontogeny of variant forms of esterases in tissues; qualitative and quan- 

 titative characteristics of allelic forms of esterases studied by starch 

 and/or acrylamide gel electrophoresis. Mus musculus (Rodentia) 



PORTER, K. R. M.LLE. — Biol. Labs., Harvard Univ., 16 Divinity Ave., 

 CAMBRIDGE, Mass. 02138, U.S.A. 



PORTMANN, A. Dr.Phil., Prof. — Zool. Anstalt der Univ. Rhein- 

 sprung 9.4000 BASEL, Schweiz 



a. Embryology. (Opisthobranchia, Prosobranchia, Gastropoda; Aues; Mam- 

 malia) 



b. Morphological analysis of early postembryonic development. (Rodentia: 

 Insectivora) 



POTEMKINA, Mrs. D.A. Cand.biol.sci. — Dept. of Embryol., Fac. of Biol, 

 Moscow Univ., MOSCOW V-234. U.S.S.R. 



a. Causal analysis of the formation of the Miillerian ducts, in particular the 

 interactions between nephric system and gonadal ducts. (Anura) 



b. The formative connections between the epithelial and mucosal compo- 

 nents of the oviduct and the connective tissue stroma. (Anura) 



c. The problem of the reduction of the Miillerian ducts of juvenile males. 

 Pelobates [uscus (Anura) 



POTTER, I.e. — Dept. of Zool.. School of Biol. Sci., Univ. of New South 

 Wales, P.O.Box 1, KENSINGTON, N.S.W., Australia 

 a. Culture of larval hearts. Mordacia mordax (Cyclostomata) 

 POTTS. D.M. M.A., M.B.. B.Chir. — Anat. School, Univ. of Cambridge. 

 CAMBRIDGE, England 

 a. Implantation and gestation. (Mammalia) 

 POULSON. D.F. B.S.. Ph.D.. M.I.I.E., Prof. — Dept. of Biol. (Osborn 

 Memorial Lab.), Yale Univ., NEW HAVEN. Conn.06520. U.S.A. 

 a. Mid-gut: genesis and differentiation. Drosophila melanogaster (Diptera) 

 h. Chromosomal control of differentiation. Drosophila melanogaster (Dip- 

 tera) 



c. Neurogenesis in normal and genetically deficient embryos. Drosophila 

 melanogaster (Diptera) 



d. Maternally inherited sex-ratio disturbances of development. Drosophila 

 melanogaster, D. bifasciata, D. willistoni (Diptera) 



e. Developmental genetics. Drosophila nebulosa (Diptera) 



162 



