BERTMAR, G. Fil.lic. — Zootom. Inst., Univ. of Stockholm, 70A R^d- 



mansgatan. STOCKHOLM. Sweden 

 a. Development and morphology of the skeleton of the head. (Characidae, 



Teleostei) 

 BIEBER. S. B.A.. M.S., Ph.D. — The Wellcome Research Labs, TUCKA- 



HOE 7, Westchester County, N.Y., U.S.A. 

 a. Nucleic acid metabolism during gametogenesis, embryogenesis and rege^ 



neration; studies carried out with aid of analogues of purines and pyri- 



midines, and with radioisotope-labeled nucleic acid derivatives. Rana 



pipiens (Anura) 

 BIELAnSKA— OSUCHOWSKA, Mrs Z. Mag. of Sci. — Inst, of Histol. 



and Embryol., Veter. Fac, ul. Grochowska 272. WARSZAWA. Poland 



a. Histochemical studies on oogenesis. Polydrosus spec, Phyllobius spec. 

 (Curculionidae, Coleoptera) 



b. Comparative studies on vitellogenesis. Phyllobius spec. Chlorophanus 

 spec. Rhynchites spec. (Curculionidae, Coleoptera) ; Melasoma populi, 

 Agelastica alni (Chrysomelidae, Coleoptera); Pyrrhocoris apterus 

 (Heteroptera) 



c Studies on hermaphroditism. Capra domestica (Artiodactyla) 

 BIER, K. Dr rer. nat, — Inst, fur Angewandte Zool. der Univ. Naturw. 



Fak.. Rontgenring 10, WORZBURG, Deutschland 

 BIJTEL, Miss J. H. Dr Sci., M.D.. M.I.I. E. — Anat.-Embryol. Lab. der 

 Rijks Univ., Oostersingel 69. GRONINGEN. Holland 



a. Investigations concerning the process of outgrowth of the tail with spe- 

 cial reference to the role of the chorda dorsalis and the tail mesoderm. 

 Ambystoma mexicanum, Triton taeniatus, Xenopus laevis (Amphibia) 



b. Experiments concerning the factors which determine the normal course 

 of the outgrowing pronephric duct. Ambystoma mexicanum, Triton 

 taeniatus, Xenopus laevis (Amphibia) 



c Development and phylogenetic origin of the columella auris. Ambystoma 

 mexicanum, Triton taeniatus, Xenopus laevis (Amphibia) 



d. Development of the naso-lacrimal duct. Xenopus laevis (Anura) 



e. Development of the naso-lacrimal duct. Mus musculus albinus (Rodentia) 



f. Development of the corpus callosum. Felis domestica (Carnivora) 

 BILLETT, F. B.Sc. Ph.D. — Inst, of Animal Genet.. Univ. Dept of Genet.. 



King's Buildings. West Mains Rd, EDINBURGH 9, Scotland 



a. Developmental effects of metabolic antagonists. (Evertebrata, Verte- 

 brata) (in collaboration with Miss M. M. PERRY and C. H. WAD- 

 DINGTON) 



b. Localization and distribution of /^-glucuronidase in embryos. (Amphibia), 

 Callus domesticus (Aves) 



c Immunological study of nucleoproteins. Callus spec (Aves) (in collabo- 

 ration with Mrs R. M. CLAYTON— FREEDMAN and A. FROH- 

 LICH) 



BILLINGHAM, R. E. M.A.. D.Phil. — Dept of Zool. and Comp. Anat.. 

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



BIRGE, W. J. B.A., M.S.. Ph.D. — Dept of Zool., Oregon State Coll.. 

 CORVALLIS, Ore.. U.S.A. 



BISHOP. D. W. Ph.D. — Dept of Embryol.. Carnegie Inst, of Washing- 

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

 a. Physiology and metabolism of spermatozoa. (Mammalia) 



15 



