e. Induction of amphidiploidy in interspecific hybrids. Bombyx mori, B. 

 mandarina (Leptidoptera) (in collaboration with Miss V. N. VEREJS- 

 KAJA) 

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

 gener., Fac. des Sci., 12 Rue de l'Universite, STRASBOURG, France 



a. Etude de la lignee germinale. (Amphibia) 



b. Etude de l'hermaphroditisme. (Gastropoda) 



AUERBACH, R. Ph.D. — Dept. of Zool., Univ. of Wisconsin, Birge Hall, 



MADISON 6, Wis., U.S.A. 

 a. Embryonic tissue interactions. Mus musculus (Rodentia) 

 AUSTIN, C. R. B.V.Sc, D.Sc, M.I. I.E. — Nat. Inst, for Med. Research, 



Mill Hill, LONDON N.W. 7, England 



a. Investigations on gametes, fertilization and early development. (Mam- 

 malia) 



b. Fate of spermatozoa in the female genital tract and possible effect on 

 embryonic development. (Mammalia) 



AVEL, M. Dr., F.I. I.E., Prof. — Lab. de Biol. Gener., Fac. des Sci. de 

 Bordeaux, 40 Rue Lamartine, TALENCE (Gironde), France 



AZOUBEL. R. M.D. — Cadeira de Histol. e Embriol., Fac. de Medicina, 

 Univ. do Recife, Caixa Postal N. 616, RECIFE, Brasil 



BACKHOUSE, K. M. M.B., B.S. — Dept. of Anat., Charing Cross Hosp. 

 Med. School, 62 Chandos Place, LONDON W.C. 2, England 



a. Gubernaculum testis and testicular descent. (Mammalia) 



b. Early embryology and implantation. Halichoerus grypus (Pinnipedia) 



c. Implantation of the blastocyst. (Mammalia) 



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



Norrtullsgatan 16, STOCKHOLM Va., Sweden 

 BAFFONI, G. M. Dr. Biol. Sci. — 1st. di Anat. comp. "G. B. Grassi", Fac. 



di Sci., Univ. di Roma, Via Borelli 50, ROMA, Italia 



a. Growth and differentiation of the nervous cell. Lampetva spec. (Cyclos- 

 tomata) , Trutta spec, Brachydanio spec. (Teleostei), Rana spec, 

 Bufo spec, Xenopus spec, Bombina spec, Triturus spec. (Amphibia), 

 Columba spec, Gallus spec. (Aves), Felis spec, Mus spec, Rattus spec. 

 (Mammalia) 



b. Mitotic ratio in the larval central nervous system. Bufo bufo, Triturus 

 cristatus (Amphibia) 



c Chromatoid bodies, heterochromosomes and sex-chromatin. Potamon 

 fluviatile, Callianassa tyrrhena, Eupagurus prideauxii (Decapoda, 



C m^telC Pel ) 



BAGINSKI, S. M.D. — Inst, of Histol. and Embryol., Acad, of Med., 

 Narutowicza 60, LODZ, Poland 



a. Investigations of experimentally provoked monstruosities in embryos. 

 Gallus spec. (Aves) 



b. Influence of azo-dyes on the development of embryos. Gallus spec 

 (Aves) 



c Influence of isotopes on the development of embryos. Gallus spec. (Aves) 

 BAGNARA, J. T. B.A., Ph.D. — Dept. of Zool., Univ. of Arizona, 

 TUCSON, Arizona, U.S.A. 



a. Various aspects of the development and endocrinology of pigmentation. 

 Many spp. (Amphibia) 



b. Electron microscopy of inductor systems. Gallus domesticus (Aves) 



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