Spratt-Sto 



f. Analysis of dynamic population patterns (Pattern formation by free- 

 swimming, ciliated and flagellated organisms). Tetrahymena spec, 

 Euglcna spec. (Protozoa), Arbacia punctulata (Echinoidea) 

 SRINIVASACHAR. H. R. B.Sc.(Hons), M.Sc. Ph.D. — Dept of Zool., 

 Central College. BANGALORE 1. India 



a. Development of chondrocranium — basis for classification and evolution. 

 (Pisces) 



b. Development of osteocranium — centres of ossification, etc. (Siluroidea) 

 SRIVASTAVA. M. D. L. D.Sc. F.N.A.Sc. — Dept of Zool.. Allahabad 



Univ.. ALLAHABAD. India 

 STAGNI. Miss A. M. — Lst. di Zool. Via S. Giacomo 9. BOLOGNA. 



Italia 

 a. Regeneration. (Hydra) 

 STAM, F. — Anat.-Embryol. Lab.. Free Calvinistic Univ., Pr. f-fendriklaan 



27. AMSTERDAM Z. Holland 

 a. The influence of hypoxaemia during gravidity on the development of 



the cerebellum of the foetus. Rattus noruegicus (Rodentia) (in collabo- 

 ration with F. Van FAASSEN and F. C. SCHOLTEN) 

 STARCK. D. Drmed., F.I.I.E., o. Prof. — Dr Senckenberg. Anat. Inst., 



Med. Fak. der Univ., Ludwig Rchnstr. 14, FRANKFURT, Main-Siid. 



Deutschland 

 STARK, O. J. Dr rer.nat. — Zool. Inst, der Univ., Katharinenstrasse 20, 



FREIBURG i. Brsg.. Deutschland 

 STEFAN. Miss Y. Lie. es Sci. — Lab. de Zool. et d'Embryol. e.xper., Inst. 



de Zool. et de Biol, gener.. 12 Rue de I'Universite, STRASBOURG. 



France 

 a. Morphogenese du tractus genital et des gonades. Emys lepiosa (Chelo- 



nia). (Ophidia) (en collaboration avec J. H. VIVIEN) 

 STEFANELLI. A. Dr. F.I.I.E.. Prof.ord. — 1st. di Anat. comp. ,.G. B. 



Grassi". Fac. di Sci., Univ. di Roma. Via Borelh 50, ROMA, Italia 

 a. Histogenetic determination and differentiation of nervous cells. (Teleos- 



tei. Amphibia. Aves) 

 h. Degeneration and regeneration of nervous cells. (Teleostei. Amphibia, 



Aves) 



c. Social behaviour of cultivated cells. (Amphibia, Aves) 



d. Correlated and partial movements of spermatozoa. (Amphibia, Aves) 



e. Cytochemistry of development and regeneration. (Amphibia, Aves) 

 STEIN, Miss K. F. A.B.. M.S.. Ph.D. — Dept of Zool.. Mount Holyoke 



Coll.. SOUTH HADLEY. Mass.. U.S.A. 



a. Development of an abnormal homozygote due to the looptail gene (Lp). 

 Mus musculus (Rodentia) 



b. Histochemical study of normal development and of the abnormal homo- 

 zygote LpLp. Mus musculus (Rodentia) 



STEINBERG, D. M. Prof. — Zool. Inst, of the Acad, of Sci. of the 

 U.S.S.R., Universitetskaja Nabereznaja 1, LENINGRAD 164, U.S.S.R. 



STEINBERG. M. S. B.A.. M.A.. Ph.D. — Dept of Embryol., Carnegie 

 Inst, of Washington, Wolfe and Madison Sts. BALTIMORE 5. Md, 

 U.S.A. 



a. Electrophoretic separation of living embryonic cells. Triturus pyrrhogas- 

 ter (Urodela), Gallus domesticus (Aves) dela) 



b. Cellular interactions during differentiation. Triturus pyrrhogaster (Uro- 



104 



