Hart 40 Hee 



HARTMANN, J. F. Ph.D., Prof. — Inst, of Anat., School of Med., Univ. 



of Minnesota, MINNEAPOLIS 14, Minn., U.S.A. 



(no data received over this year) 

 HARTUNG, E. W. Ph.D. — Dept of Zool., Rhode Island State Coll., 



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

 a. Factors influencing tumor incidence in Drosophila melanogaster. A study 



of the developmental, environmental, and genetic factors operative in 



the development of so-called "melanin tumors" in the fruit fly. (Insecta) 

 HARTWIG, H. Dr Phil. — Inst. f. Entw.physiol., Kerpenerstr. 13, KOLN- 



Lindenthal, Deutschland. 

 a. Analyse der einzelnen unter dem Einfluss des Schilddriisenhormons 



erfolgenden Differenzierungs- bzw. Reduktionsvorgange. (Vertebraten) 

 HARVEY, Mrs. E. B. A.B., M.A., Ph.D., Dr — Dept of Biol., Princeton 



Univ., PRINCETON, N.J., U.S.A. 



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

 force. Parthenogenetic merogony. (Echinodermata) 



b. Monograph on Arbacia punctulata, including classified compilation of 

 all experimental work. (Echinodermata) 



HASEGAWA, M. M.A. (Rigakushi) — Biol. Inst., Fac. Sci., Nagoya Univ., 

 Chigusa-Ku, NAGOYA, Japan. 



a. Restitution des Auges bei Misgurnus fossilis. (Pisces) 



b. Restitution des Auges nach sukzessiver Entfernung von einzelnen Augen- 

 haute. Tritutus pyrrhogaster (Amphibia) (unter Mitwirkung von 

 T. SATO) 



c. Linsenregeneration bei Misgurnus fossilis. (Pisces) (unter Mitwirkung 

 von T. SATO) 



HAY, Mile D. Lie. es Sc. — Lab. de Zool. de la Fac. des Sciences et Lab. 

 d'Embryol. et Teratol. exper. du C.N.R.S., Inst, de Zool. et de Biol, 

 generate, 12, Rue de l'Universite, STRASBOURG, France, 

 a. Etude des Free-Martins chez les Bovides. Bos taurus (Mammalia) 

 HAY, E. D. — Dept of Zool., Univ. of Illinois, URBANA, III, U.S.A. 

 a. Contribution of epidermis to the amphibian limb regeneration blastema 

 as demonstrated by transplantation of heteroploid epidermis. 

 HAYES, E. R. Ph.D., Prof. — Dept of Anat., Ohio State Univ., COLUM- 

 BUS 10, Ohio, U.S.A. (no data received over this year) 

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

 U.S.A. 

 a. Experiments to test the ectodermal origin of the cells of the regeneration 

 blastema of the limb. (Amphibians) 

 HEAYSMAN, Miss J. E. M., B.Sc. — Queen Mary Coll., Univ. of London, 

 Mile End Rd, LONDON E. 1, England, 

 a. Some of the factors involved in the development of the shell in Helix 

 pomatia, Paludina vivipara, Nucella lapillus. (Mollusca) 

 HEESCH, Miss W. H. T. van — Zool. Lab. der Rijks Univ., Janskerkhof 3, 

 UTRECHT, Holland. 



a. Development of head. Pleuronectes (Teleostei) 



b. Analysis of lithium action. Limnaea stagnalis (Gastropoda) (in col- 

 laboration with G. A. van ARKEL, Miss E. v. d. BROEK, Mrs A. S. 

 DUYKER— de BEER, J. C. N. KOK, J. W. KUIPER, Miss R. P. 

 van LOO, G. D. NIJENHUIS, Miss J. E. H. SMIT and W. L. van 

 UTRECHT) 



