Oksche-Par 



b. Die Feinstruktiir der Sinneszellcn des Orc]anon frontale bei qualitativ 

 und quantitativ modifiziertem Lichtreiz. Vcrhalten der spezifischen, mit 

 Eisen-Hacmotaxylin farbbaren Zellstrukturen wahrend des Individual- 

 zyklus. Bufo vulgaris (Larven), Rana tcmporaria. Xenopus laevis 

 (Aniira) 



c. Individualzyklische Entwicklung der Sekretion im Subcommissural-organ. 

 Entwicklung der Nerven- und Gefassverbindungen der Organe des 

 Zwischcnhirndachs. Klarung der Funktion. (Vertebrata) 



OLIVER. C. P. — Dept of Zool.. Univ. of Texas, AUSTIN 12, Texas. 



U.S.A. 



(no embryological work in progress) 

 OLIVER— YATES, Mrs H. B. B.Sc. — Inst, of Animal Genet.. Univ. 



Dept of Genet.. King's Buildings. West Mains Rd, EDINBURGH 9. 



Scotland (U.K.) 



a. Study of developing embryos using electronmicrographs' of ultra-thin sec- 

 tions. (Amphibia) (in collaboration with G. G. SELMAN) 



b. Differentiation in tissue culture (in collaboration with Mrs R. M. CLAY- 

 TON— FREEDMAN and M. FELDMAN) 



OLIVIER. G. Prof. Agrege — Lab. des Travaux Anat., Fac. de Med. Nou- 

 velle, 45 Rue des Sts Peres, PARIS Vie, France 

 a. Developpement du plexus brachial. Homo (Primates) (en collaboration 

 avec R. FEN ART) 

 OLIVO. O. M. Med. Dr, Ord. Prof. — 1st. di Istol. e Fisiol. gen.. Fac. di 



Med.. Via Belmeloro 8, BOLOGNA, Italia 

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

 gatan, STOCKHOLM, Sweden 

 a. Development of nuclei and fibres in the brain. Polypterus (Brachio- 



pterygii) 

 h. Development of Reissner's fibre and the infundibular and subcommissu- 

 ral organ. Branchiostoma (Cephalochordata) , Homo (Primates) 



c. Development of the epithalamus. (Brachiopterygii) 



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



S. Agostino 4. SIENA, Italia 



(no embryological work in progress) 

 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 heteroclitus (Teleostei) 

 h. Autonomous movements of endoderm. Fundulus heteroclitus (Teleostei) 

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



ul. Sicnkiewicza 21. WROCLAW. Poland 



a. Development of the vertebral column centra. (Salmonidae, Teleostei) 



b. Influence of temperature on development of axial skeleton. (Teleostei) 

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

 consin. MADISON. Wis.. U.S.A. 



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



Cricctus auratus ( Rodentia) 

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



Italia 

 a. Structure of the egg cortex. (Marine Evcrtebrata) 



78 



