Ols 71 O2 



OLSSON R. Fil.mag. — Zootom. Inst., Univ. of Stockholm, 116 Drottning- 



gatan, STOCKHOLM, Sweden 

 a. Development of the anterior hypophysis. Larus tidibundus (Aves) 



Polypterus (Brachiopterygii) 

 OMODEO, P. Dr Sci. — 1st. di Biol, e Zool. gen., Fac. di Med.. Piazza 



S. Agostino 4, SIENA, Itaha (no data received on Nov. 1=', 1953) 



OORT, J. — Lab. for Exper. Histol., Fac. of Med., Univ. of Leyden, Wasse- 



naarseweg, Boerhaavekwartier, LEIDEN, Holland 

 a. Development of the anterior hypophysis. Larus ridibundus (Aves) 

 OPPENHEIMER, Miss J. M. B.A.. Ph.D. — Dept of Biol., Bryn Mawr 



Coll., BRYN MAWR. Pa, U.S.A. 

 a. Experimental analysis of regional determination within the brain. Fun- 



dulus heterocUtus (Teleostei) 

 ORLANDI, Miss A. Dott Sci Biol. — 1st. di Zool. e Anat. Comp., Univ. 



di Milano, Via Celoria 10, MILANO, Itaha 



a. Nucleoproteins and chromosomes. (Vertebrata) 



b. Yolk granula. (Amphibia) 



ORSINI, Mrs M. C. WARD — Ph.D.. B.A. — Dept of Anat., Univ. of 

 Wisconsin. MADISON. Wis.. U.S.A. 

 a. Fetal membranes, giant cells, and pregnancy changes in uterine vessels. 

 Cricetus auratus (Rodentia) 

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

 ul. Sienkiewicza 21, WROCLAW. Poland 

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

 dontidae, Teleostei) 

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



a. Morphogenetic movements. (Ascidiae) Italia 



b. Structure and potencies of the egg before cleavage. (Ascidiae) 

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



CADIZ. Spain 

 a. Embryology of the lungs. (Mammalia) 

 h. Cyclopy. Homo sapiens (Primates) 

 OSAWA, S. M.A. (Rigakushi) — Biol. Inst., Fac. of Sci., Nagoya Univ., 

 Chigusa-Ku, NAGOYA, Japan 



a. Studies on the proteins of the early embryo. ( 1 ) Fractionation and 

 psysico-chemical characterization of the proteins; (2) Inducing capacity 

 of the various proteins; (3) Regional and temporal changes of the protein 

 fractions; (4) Physical effects of Li and SCN on the proteins; (5) 

 Inducing capacity of the organizer region free from nucleic acids. 

 Triturus (Urodela) (in collaboration with R. OKAZAKI) 



b. Role of pentose-nucleic acid in protein synthesis of various embryonic 

 tissues. (Vertebrata and Evertcbrata) 



c. Biochemical and histological studies of oogenesis. Triturus pyrrhogaster 

 (Urodela) (in collaboration with Y. HAYASHI) 



OVERTON, Mrs J. Dr — Dept of Zool.. Univ. of Chicago. CHICAGO 37. 

 111., U.S.A. 

 a. Mitogenesis. 

 OZBURN, R. H. B.S.A., M.Sc. — Dept of Entomol. and Zool., Ontario 

 Agricultural Coll.. GUELPH, Ont., Canada 

 a. Gassing effects in eggs during incubation. Meleagris (Galli. Aves) 



