a. Etude experimental de l'organogenese de l'appareil digestif. Gallus gal- 

 lus (Aves) 

 LEESON, C. R. M.A., M.D., MB., B.Chir., Prof. — Dept. of Histol. and 

 Embryol.. Med. School, Queen's Univ., KINGSTON, Ont., Canada 



a. Postnatal development and differentiation of interstitial tissue of the tes- 

 tis. Rattus rattus (Rodentia) 



b. Postnatal development of the "boundary tissue" of the seminiferous tubule. 

 Rattus rattus (Rodentia) 



LEFFORD (FERNANDO), Mrs. F. M.B.B.S., Ph.D. — Dept. of Anat. and 

 Embryol., Univ. Coll. London, Gower St., LONDON W.C. 1, England 

 a. Studies on cell locomotory behaviour in tissue culture. Gallus domesticus 

 (Aves), Cavia spec. (Rodentia) 



LEGAULT. R. O. B.A., M.S., Ph.D., Prof. — Dept. of Biol., Univ. of Otta- 

 wa, OTTAWA, Ontario, Canada 



a. A standardized system for numbering stages within early development 

 (fertilization through gastrulation). Perca flavescens, Brachydanio redo, 

 Osmerus mordax (Teleostei) 



b. Comparative study of postgastrular development. Perca flavescens, Bra- 

 chydanio rerio, Osmerus mordax (Teleostei) (in collaboration with F. 

 CLULOW) 



LEGAY. J. M. Dr.es Sci., Prof. — Lab. de Zool. exper., Fac. des Sci. de Lyon, 



43 Bd. de l'Hippodrome, VILLEURBANNE, France 

 a. Modifications de l'heritabilite en fonction du developpement ou des 



conditions de ce dernier. Drosophila melanogaster (Diptera), Bombyx 



mori (Lepidoptera) 

 LEGENDRE. R. Dr.rer.nat., Dr.es Sci., Prof. — Lab. de Zool. et de Biol. 



gener., Fac. de Sci., Univ. de Madagascar, TANANARIVE, Madagascar 

 a. Developpement embryonnaire et post-embryonnaire. Archaea spec. (Ara- 



neidae) 

 LEGHISSA, S. Ph.D., M.I.I.E., Prof. — 1st. di Anat. comp., Via Belmeloro 8, 



BOLOGNA (103), Italia 

 LEGNAME, A. H. Dr. — Inst, de Biol. Gener. y Embriol. Exper., Buenos 



Aires 289, TUCUMAN, Argentina 



a. Oxidative reserve in early development. Bufo arenarum (Anura) 



b. Catalase in early development. Bufo arenarum (Anura) 

 LEGRAND, J.-J. Dr. es Sci., Prof. — Lab. de Zool. et Biol, anim., Fac. des 



Sci., POITIERS, Vienne, France 

 LEHMAN, H. E. M.A., Ph.D., M.I.I.E. — Dept. of Zool., Univ. of North 

 Carolina, CHAPEL HILL, N.C., U.S.A. 



a. Pigment pattern formation, cell migration and tissue affinities in the neural 

 crest. Triturus spec, Amby stoma spec. (Urodela) (in collaboration with 

 Mrs. L. M.Y.LEHMAN) 



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

 (in collaboration with Mrs. L. M. Y. LEHMAN) 



LEHMAN, Mrs. L. M. YOUNGS M.A., Ph.D. — Dept. of Zool., Univ. of 

 North Carolina, CHAPEL HILL, N.C., U.S.A. 

 a. Pigment pattern formation, cell migration and tissue affinities in neural 

 crest. Triturus spec, Amby stoma spec. (Amphibia) (in collaboration 

 withH. E.LEHMAN) 



95 



