Leh-Lin 



b. Hybridization and nucleocytoplasmic relations. (Echinoidea; Amphibia) 

 (in collaboration with H. E. LEHMAN) 

 LEHMANN, F. E. Dr.Phil., F.I.I.E.. Prof. — Zool. Inst, der Univ. Bern, 



Sahlistr. 8, BERN, Schweiz 

 LEIKOLA, A. H. A. Phil.lic. — Dept. of Physiol.Zool., Univ. of Helsinki, 

 Arkadiankatu 7, HELSINKI, Finland 

 a. The competence of gastrula ectoderm. Tritums vulgaris (Urodela) 

 LEME2, L. MUDr. — Dept. of Anat., Charles Univ., U nemocnice 3, 

 PRAHA 2, Czechoslovakia 



a. Embryonal haematology. Gallus domesticus (Aves) 



b. Experimental morphology of the pneumogastric system. Gallus domesti- 

 cus (Aves) 



LENDER, Th. M.I.I.E., Prof. — Lab. de Biol. Anim., S.P.C.N., Fac. des Sci. 

 de Paris, Centre d'Orsay, ORSAY (S. & O.), France 



a. Problemes de la regeneration: substances inductrices et inhibitrices. (Pla- 

 nariidae, Turbellaria) 



b. Neurosecretion. (Planariidae, Turbellaria) 



c. Regeneration. Gibbosa asterina (Asteroidea, Echinodermata) 



d. Culture in vitro d'organes larvaires. Galleria spec. (Lepidoptera), 

 Periplaneta spec. (Orthoptera) 



e. Culture in vitro de gonades larvaires males et femelles. Galleria 

 mellonella (Lepidoptera) 



LENICQUE, P. Fil.Dr. — Wenner-Gren's Inst, for exper. Biol., Norrtulls- 

 gatan 16, STOCKHOLM Va., Sweden 

 a. Homologous inhibition in embryos. 

 LENNEP, E. W. van M.Sc. — Dept. of Histol. and Embryol., Univ. of Syd- 

 ney, SYDNEY, N.S.W., Australia 

 a. Placentation. Perameles nasuta (Marsupialia) 

 LENZ, W. M.D., Prof. — Inst. f. Humangenetik der Univ. Hamburg, HAM- 

 BURG, Deutsche Bundesrepublik malia) 

 a. Analysis of thalidomide embryopathy in relation to time of intake. (Mam- 

 LEONARDI, Miss G. Ph.D. — 1st. di Istol. ed Embriol., Univ. di Palermo, 

 Via Archirafi 18, PALERMO, Italia 



a. Origin and constitution of egg membranes. (Mollusca; Ascidiae) 



b. Hatching enzymes. (Mollusca; Ascidiae) 



LEONE, V. M.D., M.I.I.E. — 1st. di Istol. ed Embriol., Univ. di Parma, 



PARMA, Italia 

 LEPORI, N. G. Prof. — 1st. di Biol, e Zool. gener., Univ. di Sassari, SAS- 



SARI, Sardegna, Italia 

 a. Ricerche sulla origine della asimmetria delle gonadi femminili. (Aves) 

 LEROY, P. J. M. Dr. es Sci. — Lab. d'Histophysiol., Coll. de France, 4 



Avenue Gordon Bennett, PARIS XVIe, France 

 LEUSSINK, J. A. M.Sc. — Hubrecht Lab. (Intern. Embryol. Inst.), p/a Uni- 



versiteitscentrum "De Uithof", UTRECHT, Netherlands 

 a. Distribution of inductive capacity in the archenteron-roof and in the 



overlying neural plate (explantation experiments). (Urodela) 

 LEVAK (SVAJGER), Mrs. B. D.Sc. — Inst, of Biol., Fac. of Med., ZA- 

 GREB, Salata, Yugoslavia 

 a. Investigation of differentiation of the embryo in the anterior chamber 



of the eye. Rattus norvegicus albinus (Rodentia) (in collaboration with 



N. SKREB) 



96 



