a. On the mechanism of fertilization and activation. Oryzias latipes (Te- 

 leostei) 



b. Artificial induction of functional sex-reversal. Oryzias latipes (Teleostei) 



c. Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in 

 collaboration with T. HISHIDA and H. TOMITA) 



YAMAMOTO. T. S. M.Sc. — Dept. of Zool. Fac. of Sci., Hokkaido Univ., 

 North 8, West 5, SAPPORO, Japan 

 a. Cytochemical investigation on development. (Teleostei) (in collaboration 

 with Y. KANOH) 



YAMANA, K. M.Ag. — Dept. of Biol., Fac. of Sci., Kyushu Univ., FU- 

 KUOKA, Japan 

 a. Two species of RNA in embryos and cancer tissues. (Amphibia; Mam- 

 malia) 



YANAGISAWA, T. — Biol. Inst., Shizuoka Univ., Oiwa — 2, SHIZUOKA 

 CITY, Shizuoka, Japan 



a. Phosphate metabolism during embryogenesis and metamorphosis. (Am- 

 phibia) 



b. Phosphate metabolism during embryogenesis. ( Echinodermata) 



c. Distribution of phosphagens and guanidine phosphoryl transferases in 

 adults and gametes. (Echinodermata) 



YANAI, T. Ph.D. — Dept. of Biol., Shimane Univ., MATSUE, Shimane- 



ken, Japan 

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



Sinica, 320 Yo Yang Road, SHANGHAI, China 

 YNTEMA, C. L. Ph.D., F.I.I.E., Prof. — Dept. of Anat., School of Med., 



State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., 



U.S.A. 



a. Induction and differentiation of ear ectoderm. Ambystoma punctatum 

 (Urodela) 



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



c. Development of the visceral skeleton. Gallus domesticus (Aves) (in 

 collaboration with W. S. HAMMOND) 



d. Stages in embryonic development. Chelydra serpentina (Chelonia) 

 YOSHIKURA, M. D.Sc — Dept. of Biol., Fac. of Sci., Kumamoto Univ., 



KUMAMOTO-Shi, Japan 



a. Comparative embryology. (Araneae, Arachnoidea) 



b. The role of the pituitary in the differentiation of the gonad. (Amphibia) 



c. The influence of high temperature on the differentiation of the gonads 

 in hypophysectomized tadpoles. Rana japonica (Anura) 



YOUNG, B. A. M.B., B.S. — Anat. Dept, London Hosp. Med. Coll., Turner 



St., LONDON E. 1, England 

 a. Fine structure of foetal thyroid. Homo sapiens (Primates) 

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



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



a. Reproduction as influenced by hypothyroidism and hyperthyroidism in 

 both males and females. Cavia porcellus (Rodentia) 



b. Sexual behaviour in the male. Cavia porcellus (Rodentia) 

 ZAAIJER, Miss J. J. P. Ph.D. — Lab. for Cytol. and exper. Histol., Fac. of 



Med., Univ. of Leyde, Rijnsburgerweg 10, Boerhaavekwartier, LEIDEN, 

 Holland 



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