e. Development of head structure with special attention to cranial nerves, 

 blowhole and ear. Prodelphinius coerulealbus (Cetacea) 



SINGER, M. B.S., M.A., Ph.D., Prof. — Developm. Biol. Center, Dept. of 

 Anat., School of Med., Western Reserve Univ., 2109 Adelbert Road, 

 CLEVELAND 6, Ohio, U.S.A. 



SINGER, R. M.B., Ch.B., F.R.S.S.A., F.R.A.I. — Dept. of Anat., Med. 

 School, Univ. of Cape Town, MOWBRAY, C.P., South Africa 

 a. General embryology. Homo sapiens (Primates) 



SINHA, A. K. M.Sc. — Dept. of Zool., Presidency Coll., College St., CAL- 

 CUTTA 12, India 



a. Experimental determination of polarity. Hydra spec. (Coelenterata) 



b. Determination and individuation. Hydra spec. (Coelenterata) (in colla- 

 boration with S. MOOKERJEE and S. SANYAL) 



SIRAKAMI, K. I. Sc.Dr., M.I. I.E. — Dept. of Biol., Yamanashi Univ., 

 KOFU, Japan 



a. Various types of movements expressed by isolated blastomeres. Triturus 

 pyrrhogaster, Bufo vulgaris (Amphibia) 



b. Chemical nature of the intercellular matrix of the early embryo. Bufo vul- 

 garis (Anura) 



SIRLIN, J. L. Dr.Nat.Sci., M.I. I.E. — Inst, of Animal Genet., Univ. Dept. of 

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



a. Differentiation of protein and nucleic acids in embryonic cells. (Diptera; 

 Amphibia; Aves) 



b. Metabolism of radioisotopes. Triturus spec. (Urodela) (in collaboration 

 with C. H. WADDINGTON) 



c. Histochemical autoradiographical studies on mucopolysaccharides in the 

 salivary gland. Drosophila spec. (Drosophilidae, Diptera) , Brady sia spec. 

 (Chironomidae, Diptera), Smittia spec. (Sciaridae, Diptera) (in collabo- 

 ration with K. KATO) 



d. Electron microscopic studies of the salivary glands. Bradysia spec. (Scia- 

 ridae, Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration 

 with J. JACOB) 



e. Biochemical cytology of the salivary glands. Bradysia spec. (Sciaridae, 

 Diptera), Smittia spec. (Chironomidae, Diptera) (in collaboration with 

 J. JACOB) 



f. Cytochemistry of nucleoli. Bradysia spec. (Sciaridae, Diptera), Smittia 

 spec. (Chironomidae, Diptera) (in collaboration with C. J. TANDLER) 



g. The patterns of heterogenous induction. Xenopus laevis (Anura) (in col- 

 laboration with M. SALA, S.J., Padova, and Mrs. R. M. CLAYTON 

 (FREEDMAN)) 



SKOWRON, S. Ph.D., Prof. — Dept. of Biol, and Embryol., Acad, of Med., 

 and Dept. of Exper. Zool., Polish Acad, of Sci., ul. Kopernika 7, KRA- 

 K6W, Poland 

 a. Properties of regeneration blastemal cells. Ambystoma mexicanum, Sala- 

 mandra salamandra (Urodela) (in collaboration with H. ROGUSKI) 



SKOWRON (CENDRZAK), Mrs. A. M.Sc — Dept. of Exper. Zool., 

 Polish Acad, of Sci., ul. Kopernika 7, KRAK6W, Poland 

 a. Experimental induction of immunological tolerance in embryos and adult 

 animals. Transfer of immunological tolerance to F x generation. Mesocri- 

 cetus auratus, Mus musculus, Rattus spec. (Rodentia) (in collaboration 

 with Mrs. I. SPISAK (PLONKA) and J. ZABInSKI) 



129 



