Spratt-Ste 



c. Regeneration. Planaria spec. (Turbellaria) , Tubularia spec. (Coelente- 

 rata) 



d. Cytological study of the developmental center (organizer). Gallus do- 

 mesticus (Aves) 



e. Analysis of mechanism of morphogenetic movements by time-lapse cine- 

 matography. Gallus domesticus (Aves) 



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

 swimming, ciliated and flagellated organisms). Tetrahymena spec, 

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



SREBRO, Z. A. M.D., — Dept. of Biol, and Embryol., Acad, of Med., ul. 

 Kopernika 7, KRAKOW, Poland 

 a. Regeneration in the central nervous system. Xenopus laevis (Anura) 



SRINIVASACHAR, H. R. B.Sc, M.Sc, Ph.D. — Dept. of Zool., Central 

 Coll., BANGALORE 1, India 



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

 (Pisces) 



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

 Teleostei) 



c. Skull development. Ploceus manyar flaviceps (Passeriformes, Aves) 



d. Development of the skull. Rhyacotriton olympicus olymp. (Urodela) 



e. Allometric studies on the skull. (Siluroidea, Teleostei) 



SUBTELNY, S. Ph.D. — Inst, for Cancer Research, 7701 Burholme Avenue, 

 PHILADELPHIA 11, Pa., U.S.A. 



a. Attempts to enhance the differentiation promoting capacity of embryonic 

 endoderm nuclei with haploid nuclei. Rana pipiens (Anura) 



b. The possible relation of late embryonic deficiencies of homozygous diploid 

 embryos with the isogenic constitution of their nuclei. Rana pipiens 

 (Anura) 



c. Transplantation of embryonic nuclei into activated body cavity eggs. 

 Rana pipiens (Anura) (in collaboration with Th. J. KING) 



SUGINO, H. D.Sc, M.I.I.E., Prof. — Biol. Lab., Osaka Liberal Arts Univ., 

 Tennoji-ku, OSAKA, Japan 



a. Transplantation experiments. Dugesia gonocephala (Tricladidea) 



b. Regeneration of cerebral ganglia. Dugesia gonocephala (Tricladidea) 



SUGIYAMA, M. M.A., D.Sc, M.I.I.E. — Marine Biol. Station, Nagoya 

 Univ., Sugashima-cho, TOBA, Mie-ken, Japan 

 a. Physiological studies on fertilization and artificial parthenogenesis. He- 

 micentrotus pulcherrimus, Pseudocentrotus depressus (Echinoidea) (in 

 collaboration with M. I. ISHIKAWA) 



SULLIVAN, G. E. M.Sc, Ph.D. — Dept. of Histol. and Embryol., Univ. of 

 Sydney, SYDNEY, N.S.W., Australia 



a. Effect of paralysis with decamethonium on the morphogenesis of the 

 wing musculature. Gallus spec. (Aves) 



b. Effect of removal of insertions on the development of the musculature of 

 the wing. Gallus spec. (Aves) 



SUMINSKI, E. H. M.V.Sc — Lab. of Histol. and Embryol., Veter. Fac, ul. 

 Grochowska 272, WARSZAWA, Poland 

 a. Descriptive and physiological studies of development. Salamandra macu- 

 losa (Urodela) 



132 



