Yamada 98 Young 



b. Regional distribution of ribonucleic acid in early ontogenesis, studied 

 quantitatively. Triturus pyrrhogaster (Urodela) (in collaboration with 

 K. TAKATA) 



c. Microphotometric estimation of desoxyribonucleic acid in the nuclei of 

 different presumptive regions of the developing eggs. (Vertebrate and 

 Invertebrata) (in collaboration with S. OSAWA, H. NAORA and 

 A. SIBATANI) 



d. Regional induction by some fractions of adult tissues tested on the 

 isolated ectoderm. Triturus pyrrhogaster (Urodela) 



YAMAMOTO, K. Rigakushi (M.S.). Asst Prof. — Akkeshi Marine Biol. 

 Station, Hokkaido Univ., AKKESHI, Japan, (attached to the Sci. Fac. 

 of Hokkaido Univ.) 



a. Study on the fertilization. Limandra schrenki, Oncorhynchus keta 

 (Teleostei) 



b. Study on the fertilization. Venerupis philippinarum (Bivalvia, Mollusca) 

 YAMAMOTO, T. Dr Sc, Prof. — Biol. Inst., Fac. Sci., Nagoya Univ., 



Chigusa-Ku, NAGOYA, Japan. 



a. On the mechanism of fertilization and activation. Oryzias latipes 

 (Teleostei) 



b. Experimental analysis of the development of sexual characters. Oryzias 

 latipes (Teleostei) 



c. Experimental sex-reversal in the genetic males. Oryzias latipes (Te^ 

 leostei) 



YAO, T. Ph.D. — Lab. of Developm. Physiol., Inst, for Exper. Biol., Acad. 

 Sinica, 865 Chang Ning Rd, SHANGHAI, China. 



a. Biochemical determination of phosphatase activity in development. Dro- 

 sophila (Insecta) (in collaboration with J. CHU and Cheng Chu YING) 



b. Studies on the relation between enzymes and hormones during meta- 

 morphosis. (Insecta) (in collaboration with J. CHU and Cheng Chu 

 YING) 



YING, Cheng Chu B.Sc, — Lab. of Developm. Phvsiol., Inst, for Exper. 

 Biol.. Acad. Sinica, 865 Chang Ning Rd, SHANGHAI, China. 



a. Biochemical determination of phosphatase activity in development. 

 Drosophila (Insecta) (in collaboration with T. YAO and J. CHU) 



b. Studies on the relation between enzymes and hormones during meta- 

 morphosis. (Insecta) (in collaboration with T. YAO and J. CHU) 



YING. Miss Ho Tse B.Sc. — Lab. of Developm. Physiol., Inst, of Exper. 



Biol.. Acad. Sinica, 865 Chang Ning Rd, SHANGHAI, China, 

 a. Influence of temperature on neural induction. (Vertebrata) 

 YNTEMA, C. L. Ph.D., Prof. — Dept of Anat., School of Med., State 



Univ. of New York. SYRACUSE 10, N.Y., U.S.A. 



a. Induction and differentiation of ear ectoderm. Amblystoma punctatum 

 (Urodela) 



b. Regeneration of aneural limbs. Amblystoma punctatum (Urodela) 



c. Development of autonomic nervous system. Gallus domesticus (Aves) 

 (in collaboration with W. S. HAMMOND) 



d. Effects of sulfa drugs on the embryo. Mus musculus (Rodentia) (in 

 collaboration with W. S. HAMMOND) 



YOUNG. W. C. Ph.D., Prof. — Dept of Anat., Med. School., Univ. of 

 Kansas, LAWRENCE, Kan., U.S.A. 

 (no data received over this year) 



