Nilsson-Oks 



a The mechanism of agglutination of spermatozoa. (Mammalia) (in colla- 

 boration with P. E. LINDAHL) ,. , ^ , 

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

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

 a. Hormonal mechanism of metamorphosis. Bombyx mod. Luehdorfia /apo- 

 nica. Philosamia cynthia ricini ( Lepidoptera) (in collaboration with M. 

 ICHIKAWA) ^ ^ ^ , 



NIU M C Dr Rockefeller Inst, for Med. Research, 66th St and York 



'Ave. NEW YORK 21, N.Y., U.S.A. 

 a. Studies on embryonic induction, using a new technique: 



1. Biological aspects: the mechanism of induction and additional evi- 

 dence for homeogenetic induction. 



2. Biochemical aspects; experiments concerning the identification of the 

 inductor substances. 



NOBILI. R. — 1st. di Zool. e Anat. comp. dell'Univ., Via A, Volta 4, PISA, 



Italia 

 a. Development of the gonads in hybrids. (Urodela) 

 NOWAK6WNA. Miss J. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool., 



Uniw.we Wroclawiu. ul. Sienkiewicza 21, WROCLAW, Poland 



a. The morphogenetical functions of the thyroid gland and hypophysis. 

 (Amphibia, Reptilia. Aves) 



b. Pigmentation and the endocrine glands. (Amphibia) 



NUESCH. H. D.Sc. P.D. — Zool. Anstalt der Univ., Rheinsprung 9. 



BASEL, Schweiz 

 a. Einfluss des Nervensystems auf die Entwicklung anderer Organe. Telea 



polyphemus (Saturniidae, Lepidoptera) 

 h. Entwicklung der imaginalen Muskeln. Telea polyphemus (Saturniidae, 



Lepidoptera) doptera) 



c. Entwicklung des Nervensystems. Telea polyphemus (Saturniidae, Lepi- 

 NUMANOI. H. P. H. D. — Biol. Inst., Coll. of gen. Education, Univ. 



of Tokyo, TOKYO, Japan 



a. Biochemical study of fertilization substances, with special reference to the 

 physiology of polyphenol sulfate. (Echinoidea) 

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



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



h. Study of the life-history. (Rhizopoda monothalamia) 

 O'BRIEN B. R. A. B.Sc. Ph.D. — Dept of Histol. and Embryol., Univ. of 

 Sydney. SYDNEY, N.S.W., Australia 



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

 city for. and rate of regeneration. (Annelida) 

 O'BRIEN J. P. Ph.D. — Dept of Biol., Marquette Univ., 1217 West Wis- 

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



a. Regression of larval and adult limb and tail following exposure to X-rays 

 or denervation. Triturus viridescens and Ambystoma punctatum 



h. Spindle-cell sarcoma of adult animals. Triturus viridescens and Amby- 

 stoma punctatum (Urodela) 



c. Radiosensitivity in relation to temperature prevailing during exposure. 

 Rana catesbiana. Rana pipiens, Triturus viridescens (Amphibia); Mus 

 rattus. Lepus americanus (Rodentia) 

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

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



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