Prasad*Rap 



b. Delayed implantation studies. Cricetus auratus, Rattus spec. (Rodentia) 



c. Morphogenesis of the foetal membranes. Scalopus aquaticus, Parasca- 

 lops breweri, Scapanus townsendi (Insectivota) , Tatera indica cuvierii 

 (Cricetinae, Rodentia) 



d. Morphogenesis and cytochemistry of foetal membranes. Funambulus 

 spec. (Rodentia) 



e. Physiology of reproduction. Hemidactylus spec. (Lacertilia), Funambulus 

 spec. (Rodentia) 



PRAY, T. R. B.A., Ph.D. — Dept. of Biol., Univ. of Southern California. 

 LOS ANGELES 7, Cal., U.S.A. 



a. Development of gametophytes under uniform conditions. (Cheilantheae, 

 Pteridaceae) 



b. Development of juvenile sporophytes. (Cheilantheae, Pteridaceae) 



c. Ontogeny of leaves with particular emphasis on development of venation 

 systems from comparative viewpoint. Regnellidium spec, Pellaea spec, 

 Onoclea spec, Acrostichum spec. (Pterydophyta) 



PREDA, V. Prof. — Catedra de Biol., Inst. Medico-Farmaceutic, Str. Pas- 

 teur 6, CLUJ, Rumania 



a. Influence de la temperature d'incubation sur le metabolisme de l'oeuf. 

 Gallus spec. (Aves) 



b. Influence du systeme nerveux central sur le metabolisme de l'oeuf. Gallus 

 spec (Aves) 



c Influence de la lumiere permanente et de l'ionisation sur le metabolisme 

 de l'oeuf. Gallus spec (Aves) 



d. Influence des transfusions de sang heterospecifiques sur la differencia- 

 tion sexuelle de lembryon. Gallus spec. (Aves) 



e. Changement du sexe par l'hormone gonadotrope chorial. Zea mais 

 PRESCOTT, D. — Biol. Div., Oak Ridge National Lab., P.O. Box Y, OAK 



RIDGE, Tenn., U.S.A. 

 a. Nuclear RNA synthesis in embryonic induction and regeneration. Tritu~ 

 rus spec (Utodela) (in collaboration with T. YAM AD A and S. KARA- 

 SAKI) 

 PRETO PARVIS, Mrs. V. Dott.Med., Prof. — Cattedra di Istol. ed Embriol. 

 gener., Fac di Med. e Chir. dell'Univ. di Milano, Via Ponzio 7, 

 MILANO, Italia 



a. Histochemical studies of osteogenesis (lipids and aminopolysaccharides). 

 Felis domestica (Carnivora) 



b. Morphological and histochemical studies of histogenesis of mucous and 

 chondroid tissues. Mucous tissue of the embryo (gelatina cardiaca) and 

 of the valves of the heart. Gallus domesticus (Aves) 



c Quantitative study about the pre- and postnatal increase of cerebellar 



cortex and of its different strata. Felis domestica, Cavia cobaya, Rattus 



norvegicus (Mammalia) 



d. Histochemical studies of histogenesis of "sex-skin ". Cornopithecus ama- 



dryas (Primates) 



PRICE, Miss D. M.I. I.E., Prof. — Dept. of Zool., Biol. Sci. Div., Univ. of 



Chicago, CHICAGO 37, 111., U.S.A. 

 PUCCI, Miss I. Dr. — 1st. di Zool., Via Archirafi 18, PALERMO, Italia 



a. Ultrastructure of eggs. (Mollusca) 

 PUCCINELLI, I. Dr. Nat. Sci. '— 1st. di Zool. e Anat. comp. dell'Univ., 

 Via A. Volta 4, PISA, Italia 



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