Hay-Hil 



a. Development of Na-K activated ATPase and carbonic anhydrase in ciliary 

 processes from birth till maturity, as correlated with the development of 

 aqueous humor secretion in the eye. Oryctolagus cuniculus (Lagomor- 

 pha) (in collaboration with S. L. BONTING, M. R. CANADY and 

 L. L. CARAVAGGIO) 



HAY, Miss E. D. A.B., M.D. — Dept. of Anat, Harvard Med. School, 

 BOSTON 15, Mass., U.S.A. 



HAYASHI, Y. D.Sc. M.I.I.E. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chi- 

 kusa-ku, NAGOYA, Japan 



a. Analysis of epithelio-mesenchymal interaction in the formation of the 

 beak. Gallus spec. ( Aves) 



b. Biochemical analysis of muscle differentiation. Tritums pyrrhogaster 

 (Urodela), Gallus spec. (Aves) 



HAYEK, H Dr.med., Dr.phil., M.I.I.E., Prof. — Anat. Inst., Wahringerstr. 



13, WIEN9. Oesterreich 

 HEATH, H. D. Ph.D. — Dept. of Biol. Sci., Alameda State Coll., HA YWARD. 



Cal., U.S.A. 



a. Growth of larvally transplanted organs. Ambystoma tigrinum (Urodela) 



b. Developmental phenomena. Hydra littoralis (Hydroidea) 

 HEAYSMAN ( WAKELING), Mrs. J. E. M. B.Sc, Ph.D. — Dept. of Zool. 



and Comp. Anat., Univ. Coll. London, Gower St., LONDON W.C. 1, 

 England 

 a. Study of cell relations in tissue culture. Gallus gallus (Aves), Mus muscu- 

 lus (Rodentia) (in collaboration with M. ABERCROMBIE and Miss 

 D.M. LAMONT) 

 HECKERMAN, R. O. B.S., M.S., Ph.D., Prof. — Dept. of Biol. Sci., Quincy 

 Coll.. QUINCY, 111., U.S.A. 



a. Cytology of ageing. Mus musculus (Rodentia) 



b. Cell differentiation of islet tissue. Gallus domesticus (Galliformes, Aves), 

 Bubo virginianus (Strigiformes, Aves) 



HEIM, W. G. A.B., M.A., Ph.D. — Dept. of Biol., Wayne State Univ., 

 DETROIT 2, Mich., U.S.A. 



a. Role of catalase in growth and neoplasia. Mus musculus, Mus rattus (Ro- 

 dentia) 



b. Serum proteins during ontogeny. Gallus domesticus (Aves), Mus rattus 

 (Rodentia) 



c. Alpha-2 macroglobulin during development, regeneration, and various 

 physiological states. Mus rattus (Rodentia) 



HELFENBEIN, L. L. B.Sc. — Dept. of Biol., Kharkov State Univ., Dzerjins- 

 ky Square 4, KHARKOV, U.S.S.R. 

 a. Investigations on the history of embryology, (particularly Evertebrata) 

 HELL, Miss A. E. M.A.(Hons.) — Lab. de Biophysique et de Radiobiol.. 

 Univ. libre de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES- 

 Auderghem, Belgique 

 a. A study of initial haemoglobin synthesis in the embryo. Gallus spec. 

 (Aves) 

 HEMMINGS, W. A. B.A. — Agricultural Research Council Unit of Embryol., 

 Dept. of Zool., Univ. of North Wales, BANGOR, Caernarvonshire, 

 Wales 

 a. Immunological relations of mother and fetus. (Mammalia) 



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