Pie-Pol 



a. Chemical teratogenesis: inhibitors of nucleic acid and protein metabol- 

 ism. Gallus domesticus (Aves) 



h. Gene interaction in the control of formation of specific melanin granules. 

 Mas musculus (Rodentia) 



c. Eye development. Mus musculus (Rodentia) 



d. Developmental genetics. Gallus domesticus (Aves) 



PIETRZYK (WALKNOWSKA), Mrs. J. M.Sc. — Dept. of Exper. Zool., 

 Polish Acad, of Sci., ul. Kopernika 7, KRAKOW .Poland 



PIHAN, J.C. Agr.de Sci. — Lab. de Zool. Gener., Fac. des Sci. de Nancy, 

 30 Rue Ste Catherine, NANCY, France 

 a. Developpement du systeme tracheen chez I'embryon et la larve (etude 

 experimentale). Tipula [lavolineata (Diptera) (en collaboration avec Fr. 

 STEPHAN) 

 PIKO, L. Ing.Agr., D.V.M.. M.I.I.E. — Dept. of Devel.Biol., Div. of Biol.. 

 California Inst, of Technol.. PASADENA 4. Calif. U.S.A. 

 a. Fine structure and chemistry of fertilization and early development. 

 (Echinodermata; Rodentia) 

 PILLERI. G. Dr.med. — Hirnanat. Inst, der Psychiatr. Univ. Klinik, Med. 

 Fak., Bolligenstr. 117, 3072 Waldau. BERN, Schweiz 



a. Entwicklung des Gehirns. Castor canadensis (Rodentia) 



b. Ober die Protuberantia sclerae am embryonalen Auge. Homo sapiens 

 (Primates) 



c. Ontogenese des Auges. Balaenoptera physalus, B. acurorostrata. Me- 

 gaptera novaeangliae. Delphinus delphis, Tursiops truncatus, Delphi- 

 napterus leucas (Cetacea) 



d. Entwicklung der Korperform. Balaenoptera physalus, B. acutoro strata. 

 Megaptera novaeangliae. Delphinus delphis, Tursiops truncatus, Del- 

 phinapterus leucas (Cetacea) 



c. Ontogenese des Auges. Balaenoptera physalus, B. acutorostrata. Me- 



rostrata, Megaptera nodosa, Delphinus delphis, Tursiops truncatus, Del- 



phinapterus leucas (Cetacea) 

 f. Ontogenesis (especially nervous system). Globicephala melaena (Odon- 



toceti, Cetacea) 

 PIMPINELLI, G. Dott. — 1st. di Biol, gener.. Fac. di Med., Via del Gio- 



chetto. PERUGIA. Italia 

 a. Variazioni dell'attivita catalasica in relazione alia presenza o meno di 



alcuni fattori contenuti nel sangue. 

 PINAMONTI, S. Dr.Biol.Sci. — 1st. di Istol. ed Embriol. Fac. di Sci., Univ. 



di Perugia. PERUGIA, Italia 

 a. Metabolism of tryptophane, synthesis of ommochromes, Schistocerca gre- 



garia (Orthoptera) 

 PINEAU. H. — Lab. d'Anat.. Fac. de Med., 45 Rue des Sts.Peres, PARIS 



Vie. France 

 a. Croissance prenatale globale. Homo sapiens (Primates) 

 PINET. J.-M. D.E.S. — Inst. Natl. Agronomique, Lab. de Zool, 16 Rue 



Claude Bernard, PARIS Ve, France 

 a. Structure of the cellular bud which secretes the stylet at each moult, and 



study of its development. Rhodnius prolixus (Reduviidae, Heteroptera) 



160 



