Har-Heu 



HARRISON. R. J. M.A., D.Sc, M.D. — Anat. Dept. London Hosp. Med. 

 Coll.. Turner St. LONDON E. 1. England 



HARRISON MATTHEWS. L. D.Sc. F.R.S. — c/o The Zool. Soc. of 

 London. England 



HART. D. S. M.A. — Canterbury Agric. Coll.. Lincoln Coll., CANTER- 

 BURY. New Zealand 



HARTE. Miss C. Dr. Prof. — Inst, fiir Entwicklungsphysiologie, Univ. 

 zu Koln, Gyrhofstr. 17. KOLN-LINDENTHAL. Deutschland 



HARTUNG. E. W. Ph.D. — Dept of Zoo!.. Univ. of Rhode Island. 

 KINGSTON. R.I.. U.S.A. 



a. Factors influencing tumor incidence. A study of the developmental, en- 

 vironmental and genetic factors operative in the development of socalled 

 "melanin tumors". Drosophila melanogaster (Diptera) 



b. Studies on symmetry. (Gastropoda) 



c. Studies on tissue homotransplantation. (Amphibia) 



HARTWIG. H. Dr Phil. — Zool. Inst, der Univ. Koln. Kerpenerstr. 13, 

 K5LN-LINDENTHAL, Deutschland 

 a. Wirkungsmechanismus von Schilddriisenhormon. 

 HARVEY, Mrs E. BROWNE A.B.. M.A.. Ph.D.. Sc.D., F.I.I.E. — Dept 

 of Biol., Princeton Univ., PRINCETON, N.J., U.S.A. 

 a. Centrifuging eggs, and development of fractions obtained by centrifugal 

 force. Parthenogenetic merogony or development without nuclei. (Echi- 

 noidea) 

 h. Book, including classified compilation of all experimental work. Arbacia 

 punctulata (Echinoidea) 



c. Moving pictures of metamorphosis and of the natural history (in color). 

 Arbacia punctulata (Echinoidea) 



d. Determination of sex by electrical method. Arbacia punctulata (Echinoi- 

 dea) 



e. Prophase of the egg. Arbacia punctulata (Echinoidea) 



f. Study of a crescent-shaped figure in the egg. Arbacia punctulata 

 (Echinoidea) 



g. Effect of "theelin" on the egg. Arbacia punctulata (Echinoidea) 

 HARVEY. E. B. B.S., M.A.. Ph.D. — Dept of Zool., Univ. of Cahf.. 



DAVIS. Cal.. U.S.A. 

 HASSA, O. Dr Veter.Sc. — Inst, of Histol. and Embryol., Veter. Coll. of 



the Univ., ANKARA, Turkey 



(no embryological work in progress) 

 HAY, Miss D. Lic.es Sci. — Lab. de Zool. et d'Embryol. exper.. Inst, de 



Zool. et de Biol, gener., 12 Rue de I'Universite, STRASBOURG, France 

 a. Analyse du processus de regulation et de paragenese. (Selachii) (en 



collaboration avec J. H. VIVIEN et J. SCHOTT) 

 HAYASHI. Y. M.A. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chigusa-Ku. 



NAGOYA. Japan 



— (temporarily: Lab. of Chem. Embryol., Med. Center, Colorado Univ., 



4200 East Ninth Ave, DENVER 20, Col., U.S.A.) 

 a. Biochemical analysis of muscle differentiation. Gallus spec. (Aves) 

 HAYEK. H. Dr med., Drphil.. o.Prof. — Anat. Inst.. Wahringerstr. 13, 



WIEN 9, Oesterreich 

 HEATH. H. D. Ph.D. — Dept of Biol. Sci.. Stanford Univ., STANFORD. 



Cal.. U.S.A. 



48 



