Scho 79 Seng 



SCHOTTe, O. E. Dr. Prof. — Dept of Biol., Amherst Coll., AMHERST, 

 Mass.. U.S.A. (no data received) 



SCHREIBER, B. Dott. Sci. Nat., Prof. — 1st. di Zool. e Anat. Comp.. 

 Univ. di Milano, Via Celoria 10, MILANO, Italia, 

 a. Bone induction. (Amphibia) 



SCHUURMANS, A. J. — Zool. Lab. der Rijks Univ., Janskerkhof 3, 

 UTRECHT. Holland, 

 a. Development of the saccus vasculosus. Scyllium canicula (Selachii) 



SCHWARTZ, v.— Max Planck-Inst. fiir Biol., Spemannstr. 34, TUBIN- 

 GEN. Deutschland. 

 a. Ontogenese des Fliigelmusters. Plodia (Lepidoptera) 



SCOTT, A. C. Ph.D. — Union Coll., SCHENECTADY 8, N.Y., U.S.A. 

 (no data received over some years) 



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

 Farouk I Univ.. Moharram Bey. ALEXANDRIA, Egypt. 



a. Stages in normal development. Bu[o regularis (Anura) 



b. The development of skull and visceral muscles during metamorphosis. 

 Xenopus laevis (Anura) (Normal Table) 



c. The metamorphosis of the hyobranchial skeleton. Bufo regularis (Anura) 

 (in collaboration with Milad I. MICHAEL) 



SEIDEL, F. DrPhil., Prof. — Max Planck-Inst. f. Tierzucht und Tier- 

 ernahrung. (20a) MARIENSEE Kreis NEUSTADT a. Rubenberge 

 (Brit. Zone). Deutschland. 



a. Morphologische und physiologische Untersuchungen an der embryonalen 

 Entwicklung. Oryctolagus cuniculus (Rodentia) 



b. Morphologische und physiologische Untersuchungen an der embryo- 

 nalen Entwicklung. Platycnemis (Diptera), Gryllus (Orthoptera) und 

 Ascaris (Nematoda) 



SELMAN, G. G. Ph.D. — Inst, of Anim. Genet.. Univ. Dept of Genet. 



King's Buildings, West Mains Rd, EDINBURGH 9. Scotland (U.K.) 

 a. Study of the effects of destroying the primary organisation of mosaic and 



regulation eggs by ultrasonic treatment. (Amphibia), (Insecta), (Inver- 



tebrata) 

 h. Some measurem.ent of morphogenetic forces and the mechanical properties 



of the tissues concerned. (Amphibia) 



c. Induced haploidy. (Amphibia) 



d. Attempts to isolate proteins and protein derivatives from embryos by 

 ionophoresis. (Amphibia) (in collaboration with Miss E. M. DEU- 

 CHAR) 



e. Parthenogenesis. (Mammalia) (in collaboration with R. A. BEATTY) 

 SEMBRAT. K. Ph.D.. Prof. — ZaHad Zool. Ogolnej, Inst. Zool. Uniw. 



we Wroctawiu, ul. Sienkiewicza 21. WROCLAW, Polska (Poland). 



(no data received on Nov. 1^', 1952) 

 SEMBRATOWA. Mrs Z. M.D.. Prof. — Zaklad Histol. i Embryol.. Akad. 



Medycznej. ul. Chalubinskiego 6a, WROCLAW, Polska (Poland) 



(no data received on Nov. 1^', 1952) 

 SENGEL, Ph. }. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab. 



d'Embryol. et Teratol. exper. du C.N.R.S., Inst, de Zool.. et de Biol. 



gen., 12 Rue de I'Universite, STRASBOURG, France, 

 a. Sur les conditions de la regeneration normale du pharynx. Dugesia 



(^==Euplanaria) lugubris O. Schm. (Tricladidea, Turbellaria) 



