Iwa-Joh 



a. Embryological study on endocrine correlation. (Amphibia) 

 IWATA, F. M.Sc, D.Sc. — Akkeshi Marine Biol. Station, Hokkaido Univ., 

 AKKESHI (Hokkaido), Japan 

 a. Studies on the comparative embryology with special reference to taxonomic 

 interrelationships. (Nemertea) 

 IYEIRI, Miss S. M.Sc, D.Sc. — Dept. of Biol., Fac. of Sci., Kyushu Univ., 

 FUKUOKA, Japan 



a. Inductive effects of embryonic juice. Triturus pyrrhogaster (Urodela), 

 Gallus domesticus (Aves) 



b. Fractionation of inductive agents from mammalian tissues (normal, regen- 

 erating and cancer tissues). Triturus pyrrhogaster (Urodela), Rattus 

 spec, Cavia spec. (Rodentia) 



c Inducing substances in animal tissues. Triturus pyrrhogaster (Urodela), 

 Gallus domesticus (Aves) , Rattus nor vegicus albinus (Rodentia) 

 JACOB, J. M.A., Ph.D. — Inst, of Animal Genet, Univ. Dept. of Genet., 

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



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

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

 with J. L. SIRLIN) 



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

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

 J. L. SIRLIN) 



JACOBS, J. Ph.D. — Dept. of Zool., Univ. of California, DAVIS, Cal., 



U.S.A. 

 a. Regulation of allometric growth rates. Daphnia spec. (Cladocera) 

 JACOBS, W. P. A.B., Ph.D. — Dept. of Biol., Princeton Univ., Box 704, 



PRINCETON, N.J., U.S.A. 

 JACOBSON, A. G. A.B., Ph.D., Prof. — Dept. of Zool., Univ. of Texas, 



AUSTIN 12, Tex., U.S.A. 



a. Factors influencing the positioning of the placodal structures. Taricha 

 torosa (Urodela) 



b. Factors controlling the segregation of the optic vesicle into pigmented 

 retinal epithelium and sensory retina. Taricha torosa (Urodela) 



c Characterization of the endodermal substance that stimulates heart devel- 

 opment. Taricha torosa (Urodela) 

 JACOBSON, D. C.-O. Fil.lic — Zool. Inst., Univ. of Uppsala. UPPSALA. 

 Sweden 



a. Determination of the central nervous system. Ambystoma spec. (Uro- 

 dela) 



b. Experimental studies on fiber pattern formation in the medulla oblongata. 

 Ambystoma spec (Urodela) 



c The mechanism of neurulation. Ambystoma spec. (Urodela) 

 JACOBSON, M. B.Sc, M.B., Ch.B., Ph.D. — Dept. of Physiol., Univ. of 

 Edinburgh, Teviot Place, EDINBURGH 8, Scotland 



a. Regeneration of the optic nerve. (Amphibia) phibia) 



b. Mechanism of development of connections in the nervous system. (Am- 

 JAFFE, L. F. B.S., Ph.D. — Biol. Division, Univ. of Pennsylvania, PHILA- 

 DELPHIA 4, Pa., U.S.A. 



a. Development of cell polarity; studied by analyzing effects of polarized 

 irradiation. Funaria hygrometrica (Bryophytes) , Botrytis cinerea (Fungi 

 imperfecti) 



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