DETH, J. H. M. van M.D., Prof. — Dept. of Anat. and Histol., Univ. of 

 Adelaide, ADELAIDE. S. Australia, Australia 

 a. Fetal endocrinology. (Aves; Mammalia) 



DETTLAFF, Mrs. T. A. Dr.Biol.Sci., M.I.I.E., Prof. —Inst, of Animal 

 Morphol. of the Acad, of Sci. of the U.S.S.R., Lenin Avenue 33, MOS- 

 COW V-71, U.S.S.R. 



a. Fertilization and artificial egg activation: acrosomal reaction; velocity of 

 fertilization impulse. Huso huso, Acipenser guldenst'adti, A. stellatus 

 (Acipenseridae, Chondrostei) (in collaboration with Mrs. A. S. GINS- 

 BURG) 



b. Cell division: duration, mechanism, relation to the process of differen- 

 tiation. (Acipenseridae, Chondrostei) , Rana temporaria (Anura) 



c. Ovulation in vitro. (Acipenseridae, Chondrostei; Anura) 

 DEUCHAR, Miss E. M. M.A., Ph.D., M.I.I.E. — Dept. of Anat. and Em- 



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



a. Amino-acid activation systems in embryonic tissues. Xenopus laevis 

 (Anura), Gallus domesticus (Aves) 



b. Cellular uptake of amino-acids into proteins studied autoradiographically. 

 Xenopus leavis (Anura) , Gallus domesticus (Aves) 



DEV, D. — Cell Research Unit, Dept. of Zool., Calcutta Univ., 35 Ballygunje 



Circular Road, CALCUTTA 19, India 

 DEVILLERS, Ch. M.I.I.E,, Prof. — Lab. d'Anat. et d'Histol. comp., 7 Quai 



St. Bernard, PARIS Ve, France 



a. Origine de l'energie utilisee au cours du developpement de l'oeuf. Salmo 

 fario, S. irideus (Teleostei) 



b. Recherches sur la symetrisation de l'oeuf. Salmo spec. (Teleostei) 

 DiBERARDINO, Miss M. A. B.S. — Inst, for Cancer Research, 7701 Bur- 

 holme Avenue, PHILADELPHIA 11, Pa., U.S.A. 



a. Investigations of germ plasm in relation to nuclear transplantation. Rana 

 pipiens (Anura) 



b. Establishment of karyotype and an investigation into its stability during 

 embryonic differentiation. Rana pipiens (Anura) 



DICK, D. A. T. M.B., Ch.B., D.Phil. — Dept. of Human Anat., Univ. 

 Museum, South Parks Road, OXFORD, England 

 a. Study of ion fluxes in oocytes. Bufo bufo (Anura) 



DICKSON, A. D. M.A., M.D. — Dept. of Anat., Marischal Coll., ABER- 

 DEEN, Scotland 



DIETERLEN (LlEVRE), Mrs. F. Lic.es Sci., M.A. — Lab. d'Embryol. 

 exper. du Coll. de France, 1 1 Place Marcelin Berthelot, PARIS Ve, 

 France 



— Lab. d'Embryol. et Teratol. exper. du C.N.R.S., 49bis Avenue de la 

 Belle Gabrielle, NOGENT sur Marne (Seine), France 



a. Embryonic differentiation of the endocrine cells of the pancreas, and the 

 influence of hypophysectomy on differentiation. Gallus gallus (Aves) 



b. I n v i t r o development of the pancreas. Its influence on liver glycogen 

 in associated cultures. Gallus gallus (Aves) 



c. Formation de glycogene dans des cultures organotypiques de foie em- 

 bryonnaire. Influence d'hormones incorporees au milieu. Gallus gallus 

 (Aves) 



d. Dif ferenciation de la thyroide embryonnaire cultivee in vitro sur des 

 milieux synthetiques. Gallus gallus (Aves) 



37 



