a. Die Regenerationsleistungen heteroplastischer Keimblattchimaren. Tritw 

 rus vulgaris, cristatus, alpestris (Urodela) 



b. Unvertraglichkeitsreaktionen bei heteroplastischen Transplantationen. 

 Triturus vulgaris, cristatus, alpestris (Urodela) 



ARIENS KAPPERS, J. M.D.. Prof. — Anat.-Embryol. Lab. der Rijks Univ.. 

 Oostersingel 69, GRONINGEN. Holland 

 a. Cytological and histochemical development of choroid plexus. Homo 

 ARMSTRONG. P. B. B.S.. M.D., Prof. — Dept of Anat.. School of Med.. 

 State Univ. of New York. 766 Irving Ave. SYRACUSE 10. N.Y.. 

 U.S.A. 

 a. Function in the developing liver. Ambystoma punctatum (Urodela) and 

 Amiurus nebulosus (Teleostei) 

 ASAYAMA. S. M.Sc. D.Sc. Prof. — Lab. Exper. Embryol., Inst, of Poly- 

 techn.. Osaka City Univ., Minami-Ogimati, Kita-ku. OSAKA, Japan 

 a. Effects of various proteinic and sterolic hormones upon the sex-differen- 

 tiation of the gonad. Hynobius nebulosus (Schlegel) (Urodela) 

 ATLAS, M. B.S., A.M., Ph.D., Assoc. Prof. — Dept of Biol., Yeshiva Univ.. 



186th St and Amsterdam Ave, NEW YORK 33. N.Y.. U.S.A. 

 ASSENMACHER. I. Dr en Med. — Lab. d'Histophysiol., Coll. de France, 

 Place Marcelin Berthelot, PARIS Ve, France 

 a. Developpement et physiologic de I'hypothalamus et de I'hypophyse. Anas 

 (Aves) 

 ATTARDO, Miss C. Dr — 1st. di Zool., Via Archirafi 18, PALERMO, 

 Italia 

 a. Development and life cycle of hyperparasites. (Crustacea) 

 AUBRY, Miss R. Lie. es Sci. — Lab. de Biol., Inst, de Zool. et de Biol. 

 gen., Fac. des Sci., 12 Rue de I'Universite, STRASBOURG. France 



a. Etude de la lignee germinale. (Amphibia) 



b. Etude de I'hermaphroditisme. (Gastropoda) 



AUSTIN. C. R. M.Sc. B.V.Sc. — Med. Research Council. Mill Hill, LON- 

 DON. England (U.K.) 



AVEL, M. F.I. I.E., Dr. Prof. — Fac. des Sci. de Bordeaux. 40 Rue Lamar- 

 tine, TALENCE (Gironde), France 



AVIS, F. A.B. — Roscoe B. Jackson Memorial Lab., Box 558, BAR HAR- 

 BOR, Me, U.S.A. 



BACKHOUSE, K. M. M.B., B.S. — Dept of Anat.. St Bartholomew's Hosp. 

 Med. Coll., Charterhouse Square, LONDON E.G. 1, England (U.K.) 



a. Dental lamina and its differentiation. (Mammalia) 



b. Gubernaculum testis and testicular descent. (Mammalia) 

 BACKSTROM, S. A. A. Fil. lie. — Wenner-Grens Inst, for exper. Biol., 



Norrtullsgatan 16, STOCKHOLM Va., Sweden 

 a. Reducing and oxidizing substances in development (Echinoidea), Xeno- 

 pus (Anura) 

 BAFFONI, G. M. Dr — Lab. di Istol. ed Embriol. della Fac. di Sci., Univ. 

 di Roma, Via Borelli 50, ROMA, Italia 

 a. Growth and differentiation of the nervous cell. 

 BAGInSKI, S. M. D. — Inst, of Histol. and Embryol., Acad, of Med.. Na- 

 rutowicza 60. LoD2,, Poland Gallus (Aves) 



a. Investigations of experimentally provoked monstruosities in embryos. 



b. Influence of azo-dyes on the development of embryos. Gallus (Aves) 



9 



