Pou-Ras 



POULSON, D. F. B.S., Ph.D., Prof . — Osborn Zool. Lab., Yale Univ., 

 NEW HAVEN 11, Conn., U.S.A. 



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



b. Chromosomal control of differentiation. Drosophila melanogaster (Dipte- 

 raj 



c. Neurogenesis in normal and genetically deficient embryos. Drosophila 

 melanogaster (Diptera) 



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

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



PRASAD, M. R. N. M.Sc, Ph.D. — Dept. of Zool., Univ. of Delhi, DELHI 

 8, India 



a. Reproductive cycles. Tatera indica cuvierii (Cricetinae, Rodentia) 



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



c. Morphogenesis of the foetal membranes. Scalopus aquaticus, Parascalops 

 hreweri, Scapanus townsendi (Insectivora) , Tatera indica cuvierii (Cri- 

 cetinae, Rodentia) 



PREDA, V. Prof. — Catedra de Biologie, Institutul Medico-Farmaceutic, 

 Strada 1 mai, CLUJ, Roumania 



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. Changement du sexe par l'hormone gonadotrope chorial. Gallus spec. 

 (Aves), Zea mais 



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, MI- 

 LANO, Italia 



a. Nucleic acids and fatty substances in nervous cells during development. 

 Rattus norvegicus, Felis domestica, Cavia cobaya (Mammalia) 



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 observations and paper electrophoresis on the ground 

 substance of the umbilical cord. Homo sapiens (Primates) (in collabo- 

 ration with F. PIRIA) 



PRIESCHING, A. M.D. — Anat. Inst., Wahringerstr. 13, WIEN 9, Oes- 



terreich 

 PUCCINELLI, I. Dr. Nat. Sci. — 1st. di Zool. e Anat. comp. deH*Univ., Via 

 A. Volta 4, PISA, Italia 

 a. Development and cytology. (Tricladidea, Turbellaria) 

 PUJIULA, J., S.I. M.I.E., M.R.Ac.Med. — Inst. Biol, de Sarria, Dr. Ami- 



gant 14, BARCELONA, Sarria, Espafia 

 QUENU, L. Dr. en Med. — Lab. d'Anat. fonctionnelle et de Neuro-anat., 

 Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France 

 a. Developpement du peritoine. Homo sapiens (Primates) 

 QUEREUX, P. Dr. en Med. — Lab. d'Anat. fonctionnelle et de Neuro-anat., 

 Fac. de Med., 45 Rue des Sts. Peres, PARIS Vie, France 

 a. Developpement de la cavite peritoneale. Homo sapiens (Primates) 



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