BUJARD, E. Prof. — Inst. d'Histol. et d'Embryol., ficole de Med., 



GENEVE, Suisse 



(no embryological work in progress) 

 BUNO, W. F.I. I.E., B.S.. Ph.D., Prof. — Dept de Histol. y Embriol., Fac. 



de Med., MONTEVIDEO, Urugay, S. America 

 BURDON-JONES. C. B.Sc, Ph.D. — Dept of Zool., Univ. Coll. of North 



Wales, BANGOR, Caernarvonshire, N. Wales (U.K.) 

 a. Embryology. (Protochordata and Mollusca) 

 BURGOS, M. — Dept of Anat., Harvard Univ., Med. School, 25 Shattuck 



St, BOSTON 15, Mass., U.S.A. 

 a. The cytology, histochemistry and electron microscopy of the granular 



cells of the metrial gland of the gravid female. Rattus norvegicus (Roden^ 



tia) (in collaboration with G. B. WISLOCKI. R. ELLIS and L. B. 



WEISS) 

 BURNS, R. K. F.I.I.E., A.B.. Ph.D. — Dept of Embryol., Carnegie Inst, of 



Washington, Wolfe and Madison Sts, BALTIMORE 5, Md, U.S.A. 



a. The experimental control of sex differentiation in the embryo by means 

 of hormones. Didelphys virginiana (Marsupialia) 



b. A study of gonad modifications induced by hormones, and the reactions 

 of the gonoducts and urogenital sinus to hormones. Didelphys virginiana 

 (Marsupialia) 



BUSER— LAHAYE, Mrs J. Dr es Sci. — Lab. de Biol. Anim., Centre 

 d'Etudes Sup. Sci., Avenue Biarnay, RABAT, Maroc 



a. Regeneration des nageoirs. (Teleostei) 



b. Endocrinologie et croissance. (Teleostei) 



BUTLER, E. G. Ph.D., Sc.D., Prof. — Dept of Biol., Princeton Univ., 

 PRINCETON, N.J., U.S.A. 



a. A study of the mechanics of the formation of the regeneration blastema. 

 The influence of nerves on blastema formation. Regression in nerveless 

 non-regenerating limbs. Ambystoma punctatum and Ambystoma opacum 

 (Urodela) 



b. Blastema formation and regeneration in limbs in which proximodistal 

 polarity has been reversed. Ambystoma punctatum and Ambystoma opa- 

 cum (Urodela) 



c. Regression (reduction) and subsequent reconstitution. Clavelina lepadi- 

 for mis (Tunicata, Urochordata) 



d. Effects of ultraviolet radiation on limb development and hmb regene- 

 ration. (Urodela) 



BUTLER, H. Prof. — Dept. of Anat., Univ. College of Khartoum, KHAR- 

 TOUM, Sudan 



(no embryological work in progress) 

 BUTROS, J. M. M.A., Ph.D. — Biol. Dept, American Univ., BEIRUT, 



Lebanon 

 a. Effect of nuclear extracts on the cleavage of sea urchin eggs. Paracen- 



trotus lividus, Arbacia spec. (Echinoidea) 

 BYCZKOWSKA— SMYK, Mrs W. Mgr. — ZaHad Anat. Porownawczej 



U.J. im H. Hoyera, sw. Anny 6, KRAKOW, Poland 

 a. Proteolitic activity of the yolk sac cell, investigated by tissue culture 



method. Gallus (Aves) 

 CAIRNS, J. M. A.B., M.S., Ph.D. — Dept of Anat., School of Med., Univ. 



of Oklahoma, OLKLAHOMA CITY, Okla., U.S.A. 



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