Scd-Sha 



SEDRA, S.N. B.Sc, M.Sc. Ph.D.. F.Z.S., M.I.I.E., Prof. — Dept. of Zool., 

 Alexandria Univ., Moharram Bey, ALEXANDRIA, Egypt 



a. Behaviour of egg laying. Rana fusca, Bufo regularis (Anura) 



b. The chronological order of ossification. Bu[o regularis (Anura) 



c. The development of the urogenital system. Bu[o regularis (Anura) (in 

 collaboration with M.I.MICHAEL and S.H.KHALIL) 



SEGAL. E. B.A., M.A., Ph.D., Prof. — San Fernando Valley State College, 

 18111 Nordhoff St., NORTHRIDGE, Cahf. 91326, U.S.A. 

 a. Effect of low temperature on the production of developmental abnormal- 

 ities (pre-hatching stages). Limax flavus (Pulmonata, Gastropoda) 

 SEGAL, S.J. B.A., M.S., Ph.D., M.I. I.E. — Div. of Biomed. Sci., Populat- 

 ion Council, Rockefeller Inst., NEW YORK. N.Y. 10021, U.S.A. 

 a. Immunologic analysis of pituitary gonadotrophin function: development 



and species specificity (Vertebrata) 

 h. Mechanism of hormone action. (Vertebrata) 

 c. Action of blastotoxic chemical agents. (Vertebrata) 

 SEICHERT, V. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3. 

 PRAHA 2, Czechoslovakia 

 a. Experimental analysis of limb formation. Gallus domesticus (Aves) 

 SEIDEL, F. Dr.Phil., M.I. I.E., Prof. — Zool. Inst, der Univ., Ketzerbach 

 63, 355 MARBURG/Lahn, Deutsche Bundesrepublik 

 a. Entwicklungsphysiologie und chemische Embryologie. Parascaris me- 

 galocephala (Nematoda), Cupiennius salei (Arachnoidea), Platycne- 

 mis pennipes, Ischnura elegans, Grillus domesticus, Carausius morosus, 

 Dermestes frischi, Apis mellifica, Drosophila melanogaster (Insecta), 

 Orifctolagus cuniculus (Lagomorpha) , Mus musculus (Rodentia) 

 SEKIGUCHI. K. Ph.D. — Inst, of Zool., Tokyo Kyoiku Univ., Otsuka- 

 Kubomachi 24, Bunkyo-ku, TOKYO, Japan 

 a. Transplantation experiments with the egg. Tachypleus tridentatus (Xi-^ 

 phosura, Arachnida) (in collaboration with H.OKA) 

 SELLER. Miss M.J. B.Sc. Ph.D. — Paediatric Research Unit, Guy's Hosp. 

 Med. School, LONDON S.E.I. England 



a. Placental transport; comparing maternal and foetal blood levels of 

 physiological substances such as glucose, water, hormones etc. Rattus 

 rattus (Rodentia) 



b. Haematology of congenital anaemia in the W-series mutants. Mus mus- 

 culus (Rodentia) 



c Experimental teratology. (Mammalia) 

 SELMAN, G.G. Ph.D., M.I.I.E. — Inst, of Animal Genet., Univ. Dept. of 



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

 a. Study of certain features of developing embryos using electronmicro- 



graphs. (Amphibia) 

 h. The utihzation of yolk platelets by embryonic tissues studied by means 



of a safranin staining method. Xenopus laevis (Anura) 



c. Development of a hemicell after treatment with a localized microbeam of 

 ultraviolet light. Micrasterias thomasiana ( Desmidioideae , Conjugales) 



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

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



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



b. The morphogenetic functions of the thyroid gland and hypophysis. 

 (Pisces: Amphibia: Reptilia; Aves) 



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