Dav-DeM 



b. Incompatibility foeto-maternelles. Oryctolagus cuniculus, Rattus spec. 

 (Mammalia) 



DA VIES. D. H. M.Sc. Ph.D.. Prof. — Oceanographic Research Inst., P.O. 

 Box 736, DURBAN, Republic of South Africa 

 a. General embryology. (Carcharinidae, Selachii) 



DA VIES, F. M.D., D.Sc, Prof. — Dept. of Anat., Fac. of Med., Univ. of 

 Sheffield, SHEFFIELD, England 

 (no embryological work in progress) 



DAVIS, Ch.C. Ph.D., Prof. — Developm. Biol. Center, Dept. of Biol., West- 

 ern Reserve Univ., 2127 Cornell Road, CLEVELAND 6, Ohio, U.S.A. 



a. Hatching mechanisms in eggs of aquatic forms. (Evertebrata) 



b. Ecology of egg masses of aquatic forms. (Evertebrata) 



DAVIS. Miss C. W. C. B.Sc. — School of Biol.Sci., Univ. of Sydney, SYD- 

 NEY, N.S.W., Australia 

 a. Descriptive and experimental embryology. Culex fatigans (Nematocera, 

 Diptera), Lucilia cuprina (Cyclorrhapha, Diptera) 



DAVIS, G. R. F. B.Sc. (Hon.Zool.), M.Sc, Ph.D. — Research Station, Re- 

 search Branch, Canada Agriculture, University Sub Post Office, SASKA- 

 TOON, Sask., Canada 



a. The quantitative and qualitative requirements of immature stages for amino 

 acids and the intermediary metabolism of these amino acids. Oryzaephilus 

 surinamensis (Silvanidae, Coleoptera) , Melanoplus sanguinipes (Acridi- 

 dae, Orthoptera), Ctenicera destructor (Elateridae, Coleoptera) 



b. The effects of anti-metabolites on development and morphology. Oryzae- 

 philus surinamensis (Silvanidae, Coleoptera), Melanoplus sanguinipes 

 (Acrididae, Orthoptera), Ctenicera destructor (Elateridae, Coleoptera) 



DAWID, I. Ph.D. — Dept. of Embryol., Carnegie Inst, of Washington, 115 

 W. University Parkway, BALTIMORE 10, Md., U.S.A. 

 a. Deoxyribonucleic acid synthesis during early development. Rana pipiens, 

 Xenopus laevis (Anura) 



DE, A. M.Sc. — Dept. of Zool., Presidency Coll., College St., CALCUTTA 

 12, India 

 a. Nucleo-cytoplasmic relation. Amoebe spec. (Rhizopoda) (in collabora- 

 tion with S. CHATTERJEE and S. MOOKERJEE) 



DE BEER, Sir G. R. F.I.I.E., Prof. — 39 Shrewsbury House, Cheyne Walk, 

 LONDON S.W. 3, England 

 (no embryological work in progress) 



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

 of Virginia, CHARLOTTESVILLE, Va., U.S.A. 



a. Effects on limb regeneration from infusing microquantities of substances 

 antagonistic to the production of histamine. Diemictylus viridescens (Uro- 

 dela) 



b. Elicitation of limb regeneration by means of microquantities of tissue ex- 

 tracts. Diemictylus viridescens (Urodela) 



DE FEO, V. J. B.S., M.S., Ph.D. — Dept. of Anat., Coll. of Med., Univ. of 

 Illinois, 1853 W. Polk St., CHICAGO 12, 111., U.S.A. 



a. Embryo-maternal relationships. 1. Nature of uterine sensitivity. 2. Mech- 

 anisms of deciduoma formation. Rattus rattus (Rodentia) 



b. Quantitation of uterine sensitivity during lactational pseudopregnancy. 

 Rattus rattus (Rodentia) 



40 



