a Expression des specificites interspecifiques aux stades embryonnaires precoces. Triturus 



alpestris, T. palmatus (Urodela) 

 NANNEY, D. L. Ph.D., Prof. — Dept. of Zool, Univ. of Illinois, URBANA 111. 61801, 



U.S.A. 

 a Genetic and developmental studies on cortical variations. Tetrahymena pyriformis 



(Ciliata) 

 b Regulation of gene action in clonal cultures. Same species as a 

 NARAIN (GUPTA) , Mrs. B. Ph.D. — Dept. of Zool., Univ. of Gorakhpur, GORAKHPUR 



(UP.), India 

 NARAYANAN, C. H. Ph.D. — Dept. of Anat, Louisiana State Univ., 1542 Tulane Ave., 



NEW ORLEANS, La. 70112, U.S.A. 

 NARDI, Miss I. Dr.Biol.Sci. — 1st. di Zool. e Anat. Comp. dell'Univ., Via A.Volta 4, 



56100 PISA, Italy 

 a Mitotic and lampbrush chromosomes. (Amphibia) 

 b Nucleoli in somatic and germ line cells. (Amphibia) 

 NASH de PINJOSOVSKY, Mrs. R. E. M.D. — Inst, de Embriol., Biol, e Histol., Fac. de 



Cienc. Med., Univ. Nac. de La Plata, 60 y 120, LA PLATA, Argentina 

 a Circadian rhythms of growth variables in hepatomas. Mus musculus (Rodentia) 

 NATSUKARI, Y. — . Fish. Exper. Station, Fac. of Fish., Nagasaki Univ., Nomozaki cho, near 



NAGASAKI 851-05, Japan 

 a Embryology and life history. Loligo spp., Sepia spp. (Cephalopoda) 

 NAUTIYAL, G Ch. M.Sc. — Dept. of Biochem., Fac. of Sci., Allahabad Univ., ALLA- 



HABAD-2, U.P., India 

 a Lipid metabolism and characterization of phospholipids during development from embryo 



till young adult (thin layer and gas-liquid chromatography). Philosamia ricini (Lepidopte- 



va) (with R. PANT and J. B. SINGH) 

 NAVAGIRI, Mrs. S. S. M.S. — Dept. of Anat., Med. Coll., NAGPUR-3, M.S., India 

 a Histochemistry of apical ectodermal ridge and the distal developing system of the limb; 



localization of enzyme responsible for early phase of differentiation. Gallus domesficus 



(Aves) 

 b Regeneration of the apical ectodermal ridge; its influence on individuation of distal limb 



elements (histology). Same species as a (with P. N. DUBEY and T. L. PATIL) 

 NAVARATNAM, V. Ph.D. — Anat. School, Univ. of Cambridge, Downing St., CAM- 

 BRIDGE CB2 3DY, England 

 a Ontogenesis of cholinesterase and mono-amine activity in cardiac innervation. (Mmmalia) , 



Homo sapiens (Primates) 

 b Ultrastructure of the yolk sac. Homo sapiens (Primates) 

 NAYLOR, E. Ph.D. — Dept. of Marine Biol., Univ. of Liverpool, PORT ERIN, Isle of 



Man, U.K. 

 NEBEL, L.A. M.D., Prof. — Dept. of Embryol. and Teratol., Tel-Hashomer Hosp., TEL- 

 AVIV, Israel 

 NEDViDEK, J. RNDr. — Dept. of Exper. Zool., Charles Univ., Vinicna 7, PRAHA 2, 



Czechoslovakia 

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



(with V. VILIMKOVA) 

 b Transplantation of nuclei in relation to nucleic acids. (Amphibia) (with F. SLADECEK) 

 NEEDHAM, A. E. D.Sc. — Dept. of Zool., Univ. of Oxford, South Parks Rd., OXFORD 



OX1 3PS, England 

 a Beryllium chloride and regeneration. Polycelis nigra (Turbellaria) 



NEEDHAM, J. Dr., Prof.(Emer.) — Gonville and Caius Coll., CAMBRIDGE, England • 

 NELSON, L. Ph.D. — Dept. of Phvsiol., Med. Coll. of Ohio, P.O.Box 6190, TOLEDO, 



Ohio 43614, U.S.A. • 



a Enzyme distribution and organelle reorganization associated with flagellum formation in 



spermiogenesis. Bos taurus (Artiodactyla) , Mus musculus (Rodentia) 

 b Bioelectrical potentials of spermatids. Bos taurus (Artiodactyla), Rattus norvegicus 



(Rodentia) 

 NEMER, M. — . Inst, for Cane. Research, 7701 Burholme Ave., PHILADELPHIA, Pa. 19111, 



U.S.A. • 



a DNA transcription and translation of RNA in early stage embryos. Strong ylocentrotus 



purpuratus, Lytechinus pictus (Echinoidea) 

 NEMOTO, S. M.Sc. — Embryol. Sect, Dept. of Biol., Tokyo Metropolitan Univ., 2-1-1 



chome, Fukazawa-machi, Setagaya-ku, TOKYO, 158 Japan 

 NETZEL, H. E. M. Dr.rer.nat. — Zool. Inst, der Univ., Holderlinstr. 12, 74 TUBINGEN, 



W.Germany 

 NEUMANN, D. Dr.rer.nat., Prof. — Zool. Inst, der Univ., Weyertal 119, 5 KOLN 41, 



W.Germany 

 a Lunar periodicity of metamorphosis. Clunio marinus (Chironomidae, Diptera) 

 NEVILLE, P. A. J. Dr.d'Etat — Lab. de Bot, Univ. de Provence, Centre St.Charles, Place 



Victor Hugo, 13 MARSEILLE 3, France 

 a Experimental morphology of pinnate leaves: 1. prevention of division of leaflet primordia 



131 



