b. Some measurements of morphogenetic forces and the mechanical proper- 

 ties of the tissue concerned. (Amphibia) 



c. Study of certain features of developing embryos using electron-micro- 

 graphs of ultrathin sections and cytochemical techniques. Drosophila 

 melanogaster (Diptera), (Amphibia) (in collaboration with C. H. 

 WADDINGTON and Miss M. M. PERRY) 



SEMBRAT, K. Ph.D.. D.Sc. Prof. — Zaklad Zool. Ogolnej. Inst. Zool., 

 Uniw. we Wroclawiu. ul. Sienkiewicza 21. WROCLAW. Poland 



a. Descriptive and experimental embryology. Sagartia leucolena Verril 

 (Anthozoa) 



b. Localization of the primary gonocytes in the early gastrula. (Amphibia) 



c. The morphogenetical functions of the thyroid gland and hypophysis. 

 (Pisces, Amphibia, Reptilia, Aves) 



d. Regulation and regeneration of the primary optic vesicle. Triturus spec. 

 (Urodela) 



SEMBRATOWA. Mrs Z. OPOCZYnSKA M.D.. Prof. — Zaklad Histol. 



i Embryol., Akad. Medycznej. Chalubinskiego 6a. WROCLAW. Poland 

 a. Regulation and regeneration of the primary optic vesicle. Triturus spec. 



(Urodela) 

 SENGEL. Ph. Lie. es Sci. — Lab. d'Embryol. exper. du Coll. de France, 



et Lab. d'Embryol. et de Teratol. exper. du C.N.R.S., 11 Place Marcelin 



Berthelot. PARIS Ve. France 



a. Pigmentation de la peau d'embryon cultivee in vitro sur milieux 

 naturels et synthetiques. Gallus gallus (Aves) 



b. Analyse in v i t r o des roles du derme et de I'epiderme dans la diffe- 

 renciation des germes plumaires chez I'embryon. Gallus gallus (Aves) 



SENO, T. — Dept of Anat.. School of Med., Gunma Univ., MAEBASHI, 

 Japan 



a. Origin of the ventral body-wall. Gallus domesticus (Aves) 



b. Cartilage forming capacity of somite cells. Gallus domesticus (Aves) 

 SENSENIG, E. C. B.A., M.S.. Ph.D.. Prof. — Univ. of Alabama. Med. 



Center. BIRMINGHAM 5, Alabama. U.S.A. 

 SETO. H. Prof. — Anat. Lab.. Tohoku Univ., SENDAI, Japan 



(no embryological work in progress) 

 SETTLE. G. W. A.B.. M.D. — Dept of Embryol.. Carnegie Inst, of Wash- 

 ington, Wolfe and Madison Sts. BALTIMORE 5. Md, U.S.A. 

 a. Anatomy of club-foot deformities (particularly talipes equinovaris) in 



the fetus. Homo sapiens (Primates) 

 SEVKET GIZ, F. Dr, Prof. — Zooloji Enstitiisu, Suleymaniye-Miiftuluk. 



ISTANBUL. Turkey 

 SHAFIQ, S. A. M.Sc. D.Ph. — Dept of Zool., Dacca Univ., DACCA, 



Pakistan 

 SHANER, R. F. Ph.D., F.R.S.C, Prof. — Dept of Anat.. Univ. of Alberta. 



Med. School. EDMONTON. Alberta. Canada 



a. A study of abnormal hearts in embryos corresponding to the third month 

 of human development. Sus scrofa (Artiodactyla) 



b. Study of a collection of abnormal embryos of an age correponding to the 

 third month of human development with the aim of throwing light on 

 the development of various human abnormalities. Sus scro[a (Artiodac- 



tyla) 



c. Development of abnormal pulmonary and aortic valves. 



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