]. Coelomic studies of differentiation. Mus norvegicus (Rodentia) 

 k. Study of the forces engaged in cleavage. 

 1. Ultrasound studies on embryos. Mus norvegicus (Rodentia) 

 NICOLET, G. Lie. es Sci. — Lab. d'Embryol. exper., Inst. d'Anat, Fac. de 

 Med., Univ. de Geneve, 20 Rue de l'Ecole de Med., GENEVE, Suisse 

 a. L'action du LiCl sur le developpement. Gallus spec. ( Aves) 

 NIE, C. J. van D.V.Sc. — Veter. Anat. and Embryol. Inst., State Univ., 

 Bekkerstr. 141, UTRECHT, Netherlands 

 — Home-address: Burg. Knopperslaan 24, MEPPEL, Netherlands 



a. Ontogenetic malformations of the heart. Sus scrofa, Bos taurus (Artio- 

 dactyla) 



b. Collecting hearts of foetus from mothers, recovered from viruspest, in 

 order to investigate the possible influence on the development of the 

 heart. Sus scrofa (Artiodactyla) 



MESSING, K. Dr.Med., o.Prof. — Anat. Inst, der Univ., Robert Kochstr. 6, 



MARBURG/Lahn, Deutsche Bundesrepublik 



(no embryological work in progress) 

 NIEUWENHUYS, R. Dr. — Netherlands Central Inst, for Brain Research, 



Mauritskade 59B, AMSTERDAM O., Netherlands 

 a. Ontogenesis of the cerebrum, flower Vertebrata) 

 NIGON, V. Dr. es Sci., Prof. — Lab. de Zool. exper., Fac. des Sci., 16 Quai 



Claude Bernard, LYON, France 



a. Metabolisme des acides nucleiques durant la gametogenese et le develop- 

 pement. Parascaris equorum (Nematoda), Drosophila melanogaster 

 (Diptera) , Bombyx mod, Galleria mellonella (Lepidoptera) , Arbacia 

 lixula (Echinoidea) 



b. Metabolisme du calcium au cours du developpement. Arbacia lixula 

 (Echinoidea) 



NIIZIMA, M. M.D., Ph.D. — Dept. of Anat., Tokyo Med. & Dental Univ., 

 Yushima 3, Bunkyo-ku, TOKYO, Japan 



a. Tissue culture studies on metamorphosis. Rana catesbiana (Anuva) 



b. Tissue culture studies on the development and differentiation of dental 

 tissus. Rattus norvegicus albus, Felis domestica, Homo sapiens (Mam- 

 malia) 



c. Tissue culture studies on the functional morphology of the hepatic cells. 

 Gallus domesticus (Aves), Homo sapiens (Primates) 



d. Tissue culture studies on cell differentiation. Gallus domesticus (Aves) 

 NIJENHUIS, E. D. M.Sc. — Zool. Lab., State Univ., Janskerkhof 3, 



UTRECHT, Netherlands 



a. Analysis of the phase specificity in the sensitivity of the egg to Li-ions. 

 Limnaea stagnalis (Gastropoda) 



b. Autoradiographic localization of kations in eggs. Limnaea stagnalis (Gas- 

 tropoda) 



c. Time course of mitotic processes during early cleavage stages. Limnaea 

 stagnalis (Gastropoda) 



d. Influence of various factors on mitosis and cleavage. Limnaea stagnalis 

 (Gastropoda) (in collaboration with W. L. M. GEILENKIRCHEN and 

 Chr. P. RAVEN) 



NIKITINA, Mrs. L. A. — Inst, of Animal Morphol. of the Acad, of Sci. of 

 the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. 



101 



