a Caracterisation des substances morphogenes qui interviennent au cours du developpement 



embryonnaire du poumon. Gallus gallus (Aves) 

 b Caracterisation des substances inhibitrices de la regeneration du pharynx. (Turbellaria) 

 BEBBINGTON. A. M.Sc, M.I.Biol. — Dept. of Zoo!., Univ. of Bristol, BRISTOL BS8 



lUG, England 

 a Development. (Aplysiidae, Opisthobcanchia, Gastropoda) 

 h Development. ( Aplacophora, Amphineura) 



BECK, F. M.D., Ch.B. — Dept. of Anat., The London Hosp. Med. Coll.. Turner St., White- 

 chapel, LONDON E.l, England • 

 a The effect of trypan blue on development. (Mammalia) 

 h Embryonic nutrition. (Mammalia) 



c The postnatal maturation of intestinal epithelium. (Mammalia) 

 BECKER, H. J. Ph.D., Prof. — Zool. Inst, der Univ. Miinchen, Luisenstr. 14, 8 MONCHEN 



2, W.Germany • 



BECU§ (LAURENTIU), Mrs. M. M.D. — Dept. of Neuropathol., Research Station of 



Tirgu-Mure§ of the Acad, of the S.S.R., Str.Gh. Marinescu 38, TIRGU-MURE§, Romania 

 BEERMANN, W. Dr.rer.nat., Prof. — Max Planck Inst, fiir Biol., Abt. Beermann, Spemann- 



str. 34, 74 TUBINGEN, W. Germany • 



a Puffing and differentiation of chromosomes in salivary glands. Chironomus tentans (Diptera) 

 BEETSCHEN. J. C. Dr.es Sci., Prof. — Lab. de Biol. Gener., Fac. des Sci., 118 Route de 



Narbonne, 31 TOULOUSE (04), France • 



a Recherches cytologiques, embryologiques et genetiques sur I'heteroploidie experimentale. 



(Amphibia) 

 b Etude d'un facteur recessif semi-letal, ac. Pleurodeles waltlii (Urodela) (en collaboration 



avec A. JAYLET) 

 c Etude experimentale de la differenciation des cellules embryonnaires en culture in vitro. 



(Urodela) (en collaboration avec Mme A. M. DUPRAT) 

 BEGLEY, D. B.Sc. — Dept. of Zool., Univ. of Nottingham, NOTTINGHAM, England 

 a Postnatal antibody absorption. Rattus norvegicus (Rodentia) 

 b Electron microscope studies of the differentiating intestine. (Mammalia) 

 BEHRMAN, S. J. M.D., Prof. — Dept. of Obstet. and Gynecol., Center for Research in 



Reprod. Biol., Univ. of Michigan Med. Center, ANN ARBOR, Mich. 48104, U.S.A. 

 a Antigenicity of the trophoblast. Ocyctolagus cuniculus (Lagomorpha), Mus musculus (Ro- 

 dentia), (Primates) 

 h Sperm antibodies. 

 BEINBRECH, G. Dr. — Inst, fur Zellphysiol., Abt. fiir Biol., Ruhr-Univ., Postfach 2148, 



D-463 BOCHUM, W.Germany 

 a Development of muscles during metamorphosis: formation of the myofibrils and of the 



sarcotubular system. Phocmia regina (Diptera) 

 BELKA (GRZYBEK), Mrs. A. Ph.D. — Dept. of Gen. Biol.. Silesian Acad, of Med., K. 



Marksa 19, Rokitnica, ZABRZE 8, Poland 

 a Histochemical studies of adrenal cortex in regeneration and compensation processes. 



(Rodentia) 

 BELL, E. Ph.D., Prof. — Dept. of Biol., Massachusetts Inst, of Technol., CAMBRIDGE, 



Mass. 02139, U.S.A. o 



BELL, L. G. E. Ph.D. — Dept. of Zool., Univ. of Southampton, SOUTHAMPTON S09 



5NH. England 

 a Membrane mediated control of cell behaviour especially movement. Amoeba pcoteus (Rhi- 



zopoda) 

 h The changing relationship between nucleus and cytoplasm during the cell cycle. Amoeba 



proteus (Rhizopoda) 

 BELLAIRS, A. d'A. D.Sc. — Dept. of Anat., St. Mary's Hosp. Med. School, Paddington, 



LONDON W.2, England 

 a Morphogenesis of skeleton. (Reptilia; Aves; Mammalia) 

 h Embryonic membranes. (Reptilia) 

 c Regeneration. (Reptilia) 

 BELLAIRS, Mrs. M. R. Ph.D. — Dept. of Anat. and Embryol., Univ. Coll., Cower St.. 



LONDON W.C.I, England • 



a An electron microscopical and histochemical analysis of yolk formation. Gallus domesticus 



(Aves) (in collaboration with Mrs. M. A. England) 

 b Cell migration within the embryo. Gallus domesticus (Aves) (in collaboration with Mrs. 



J. E. M. HEAYSMAN, Dept. of Zool.) 

 BELLINI (CARDELLINI). Miss L. Ph.D. — 1st. di Zool. e Anat. Comp., Fac. di Sci.. 



Univ. degli Studi, Piazza F. Marchetti, CAMERINO, Italy 

 BELLONI, C. Dott.Sci.biol. — 1st. di Zool. Gener., Fac. di Sci. Agraria, Univ. di Perugia, 



S. Pietro, PERUGIA, Italy 

 BELLWARE, F. T. B.Sc. — Dept. of Zool., Coll. of Sci., Univ. of Western Ontario, 



LONDON. Ont.. Canada 



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