Orsk 68 Pasq 



ORSKA, Miss J. Ph.D. — Zaklad Anat. Porownawczej, Inst. Zool. Uniw., 

 ul. Sienkiewicza 21, WROCLAW, Poland, 

 a. Development of the vertebral column centra in Salmonidae and Cyprino- 

 dontidae. (Teleosts) 

 ORTOLANI, Miss G. Dr — 1st. di Zool., Via Archirafi 18, PALERMO, 

 a. Investigations on early development in Teleosts. (Pisces) Italia. 



ORTS LLORCA, F. Prof. — Lab. de Anat. y Embryol., Fac. de Med., 

 CADIZ, Spain. 



a. Embryology of the heart. (Mammalia) 



b. Embryology of the salivary glands. (Mammalia) 



OSAWA. S. — Biol. Inst., Fac. Sci., Nagoya Univ., Chigusa-Ku, NAGOYA, 

 Japan. 



a. Distribution of phosphatase and amino acids in early developmental 

 stages, studied histochemically. Rhacophorus schlegelii and Triturus 

 pyrrhogastev (Amphibia) 



b. Regional distribution of amino acids in early developmental stages, 

 studied quantitatively. Triturus pyrrhogaster (Amphibia) (in collabo- 

 ration with T. YAM AD A) 



OSTERTAG, Mile Y. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et 

 Lab. d'Embryol. et Teratol. exper. du C.N.R.S., Institut de Zool. et 

 de Biol, generale, 12, Rue de l'Universite, STRASBOURG, France, 

 a. Role des hormones dans la differenciation primaire du sexe. La genese 

 de l'asymetrie du tractus genital des Oiseaux et la regression des Canaux 

 de Miiller par les methodes d'explantations. Gallus (Aves) (En col- 

 laboration avec Et. WOLFF) 



OVERTON, Miss J. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 

 37, 111., U.S.A. 

 a. Mitogenic stimulation of epidermis by fragments of nervous system. 

 (Urodela) (in collaboration with P. A. WEISS) 



PADOA, E. Dr, Prof. — 1st. di Biol, e Zool. gen., Fac. di Med., Piazza 

 S. Agostino 4, SIENA, Italia. 



a. Experimental sex reversal of larval Amphibians. 



b. Control of metamorphosis. (Amphibians) 



PAPI, F. Dott. in Sc. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. 

 Volta 4, PISA, Italia, 

 a. Reproduction and cytology in Rhabdocoela. (Turbellaria) 

 PARDI, L. Lib.Doc. — 1st. di Zool. e Anat. comp. dell'Univ., Via A. Volta 4, 

 PISA, Italia, 

 a. Oviposition, parthenogenesis, cytology. (Insects) 

 PARMENTER, C. Ph.D., Prof. — Dept of Zool., Univ. of Pennsylvania, 

 PHILADELPHIA 4, Pa, U.S.A. 

 (no data received over this year) 

 PASCHMA, M. M.Ph. — Inst. Zool. Uniw. we Wroclawiu, Zaklad Zool. 

 Ogolnej, ul. Sienkiewicza 21, WROCLAW, Polska (Poland). 

 a. Embryology of Enchijtraeidae. (Oligochaeta) 

 PASQUINI, P. Ph.D., Prof. — 1st. di Anat. comp.. Via Belmeloro 8, 

 BOLOGNA, (103), Italia. 



a. Effects oi antimitotics on early development and on lens-regeneration. 

 Rana esculenta, Triton and Axolotl (Amphibia) 



b. Effects of antimitotics on the regeneration of peripheral nerves. Urodela 

 and Anura (Amphibians) (in collaboration with S. LEGHISSA) 



