Nar-Nig 



NARBAITZ, R. M.D. — Inst, de Anat. gener. y Embriol., Fac. de Med., 

 Paraguay 2155. BUENOS AIRES, Argentina 

 a. Sexual differentiation (gonadal genesis). Gallus domesticus (Aves) 

 NATHADZE, L. B.Sc. — Lab. of Animal Embryol., Inst, of Zool., Acad, of 

 Sci. of the Georgian S.S.R., TBILISSI, U.S.S.R. 

 a. Comparative embryological study of the brain in relation to the condi- 

 tions of development. Various spp. (Vevtebtata) 

 NATON, E. Dr.rer.nat. — Biol. Inst, der Phil.-Theol. Hochschule, Aegidien- 

 platz 2, REGENSBURG, Deutsche Bundesrepublik 



a. Manifestations of experimental carnitine deficiency: alimentary canal, 

 moulting, endocrine glands, deposition of fat and glycogen. Tribolium 

 destructor (Tenebrionidae, Coleoptera) 



b. Problems connected with longevity and fecundity. Tribolium destructor 

 (Tenebrionidae, Coleoptera) 



NAYLOR, E. B.Sc, Ph.D. — Dept. of Zool., Univ. Coll. of Swansea, Single- 

 ton Park, SWANSEA, Glamorganshire, Wales 

 a. Incubatory habits. Naesa bidentata (Sphaeromatidae, Isopoda) 

 NEBEL, L. A. M.D. — Dept. of Anat., Hebrew Univ., Hadassah Med. School, 

 P.O. Box 1172, JERUSALEM, Israel 



a. Effect of external physical factors on early development. Gallus domesti- 

 cus (Aves) 



b. Effect of certain chemicals on the structure of the endometrium and on 

 implantation. Mus norvegicus albinus, Rattus rattus (Rodentia) 



c. Tail regeneration under effect of chlorpromazin. Hemidactylus turcicus 

 (Lacertilia) 



NEDVIDEK, J. Dr. — Dept. of Gener. and Exp.Zool., Charles Univ., Vini- 

 cna 7, PRAHA 2, Czechoslovakia 

 a. Nucleic acids and subcellular particles in early development. (Amphibia) 

 (in collaboration with Mrs. V. VILfMKOVA (HABROVA) ) 



NEEDHAM, A. E. M.A., D.Sc. — Dept. of Zool., Univ. Museum, 

 OXFORD, Engeland 

 a. Autolytic activity. Erpobdella octoculata (Hirudinea) 



NEEDHAM, J. Dr., F.R.S., F.I.I.E., Prof. — Gonville & Caius Coll., CAM- 

 BRIDGE, England 



NEGBI, M. M.Sc, Ph.D. — Dept. of Botany, Hebrew Univ., JERUSALEM, 

 Israel 



NEOGY, R. K. Dr. — Chittaranjan National Cancer Research Centre, 37 

 S.P. Mookerjee Rd., CALCUTTA 26, India 

 a. Nuclear and cytoplasmic nucleic acid metabolism in the embryo, studied 

 by inoculation of radioactively labelled phosphate into air sac, amniotic 

 cavity, allantoic cavity or yolk sac respectively. Gallus domesticus (Aves) 

 (in collaboration with J. R. CHOWDHURY) 



NEULAT, Miss M. M. — Lab. de Zool. exper., Fac. des Sci. de Lyon, 43 Bd. 

 de l'Hippodrome, VILLEURBANNE, France 

 a. Metabolisme des acides nucleiques dans la gametogenese. (Lepidoptera) 



NEW, D. A. T. M.A., Ph.D. — Strangeways Research Lab., Wort's Cause- 

 way, CAMBRIDGE, England 



a. Morphogenesis of skin in tissue culture. (Aves; Mammalia) 



b. Study of embryos developing in vitro. (Mammalia) 



NEWTH, D. R. B.Sc, Ph.D., M.I.I.E., Prof. — Dept. of Biol, as Applied to 

 Med., Middlesex Hosp. Med. School, LONDON W. 1, England 



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