Nieuwkoop 66 Oka 



e. Analysis of the neural induction and subsequent organization of the 

 central nervous system. Galliis domesticus (Aves) 



f. Further analysis of the relationship between the morphogenetic influence 

 of the Li + ion and the respiration of the developing embryo. (Ascidia) 



g. Electron-microscopical analysis of induction and activation of the central 

 nervous system. Gallus domesticus (Aves) 



h. Operation techniques. Gallus domesticus (Aves) 

 NISHIHARA. T. A.B.. M.S.. Ph.D. — Dept of Zool., Univ. of CaHfornia. 



LOS ANGELES 24. Cal.. U.S.A. 

 a. Serological studies of nuclei from various organs and its significance 



for the general theory of differentiation, (in collaboration with A. M. 



SCHECHTMAN) 

 NISHIITSUTSUJI, Miss J. — Lab. of Embryol. and Exper. Morphol.. Zool. 



Inst., Dept of Sci., Kyoto Univ., KYOTO, Japan. 



(no data received on Nov. 1^*, 1952) 

 NIU. M. C. Dr — Dept of Biol. Sci., Stanford Univ.. STANFORD. Cal.. 



U.S.A. 



a. The differentiation of macrophages into melanophores following their 

 ingestion of pigmentary debris released by degeneration of preexisting 

 melanophores. (Amphibia) (in collaboration with V. C. TWITTY) 



b. The transformation of differentiated xanthophores into typical melano- 

 phores. (Amphibia) 



c. The migratory behaviour of single neural crest meianoblasts isolated in 

 capillary tubes of extremely small bore. (Amphibia) (in collaboration 

 with V. C. TWITTY) 



d. The role of mesodermal cells in epidermis formation. (Amphibia and 

 Mammalia) 



e. New experiments on the origin of pigment cells. (Amphibia) 

 NOVIKOFF. A. B. Ph.D., Prof. — Dept of Anat., Coll. of Med., Univ. of 



Vermont. BURLINGTON. Vt. U.S.A. 



(no data received over some years) 

 NOESCH. H. DrSc. P.D. — Zool. Anstalt der Univ., Rheinsprung 9. 



BASEL, Schweiz. (no data received over some years) 



NYHOLM, K. G. Fil.Dr — Zool. Inst., Uppsala Univ., UPPSALA, 



Sweden. 



a. Study of the development. ( Echinoderidae, Aschelminthes) 



b. Study of the development. Labidoplax buskii ( Echinodermata) 



c. Study of the life-history of monothalamous forms. (Rhizopoda) 

 O'BRIEN. B. R. A. — Dept of Histol. and Embryol, Univ. of Sydney, 



SYDNEY, N.S.W.. Austraha. 

 a. Enzymatic pattern in normal and regenerating tissue in relation to 

 capacity for. and rate of regeneration. (Annelida) 



O'BRIEN, J. P. Ph.D. — Dept of Biol., Marquette Univ., 1131 West Wis- 

 consin Avenue, MILWAUKEE 3, Wis., U.S.A. 

 (no data received on Nov. 1-', 1952) 



O'CONNOR, R. J. M.D., D.T.M. — Westminster Med. School. Horsferry 

 Rd., LONDON S.W. 1. England (U.K.) 



a. The metabolism of cell division ond cell differentiation. (Vertebrata) 



b. Metabolic measurement during ontogenesis. (Aves) 



OKA, H. Ph.D. (Tokyo), Prof. — Inst, of Zool., Univ. of Education. 

 Otsuka-Kubomachi 24, Bunkyoku, TOKYO, Japan. 



