HAAN, R. L. De M.A., Ph.D. — Dept of Embryol., Carnegie Inst, of 

 Washington. Wolfe and Madison Sts. BALTIMORE 5. Md. U.S.A. 



a. Study of the development of acetylcholine synthesizing mechanisms with 

 relation to the onset of spontaneous contractions in the embryonic heart. 

 Gallus gallus (Aves) 



b. Cellular migration in the embryo during the time of fusion of the cardiac 

 primordia, and the effects of drugs and altered ionic environments. 

 Gallus gallus (Aves) 



HADORN, E. Dr Phil., F.I. I.E., Prof. — Zool.-vergl. Anat. Inst., Naturw. 



Fak., Univ. Ziirich, Kiinstlergasse 16, ZORICH 6, Schweiz 

 HAGELIN, L. O. Fil.mag. — Zootom. Inst., Univ. of Stockholm, 116 Drott- 



ninggatan, STOCKHOLM, Sweden 

 HAGET, A. Dr es Sci. — Lab. de Zool., Fac. des Sci. de Bordeaux, 40 Rue 

 Lamartine, TALENCE, Gironde, France 

 a. Analyse experimentale de la morphogenese embryonnaire de la tete. 

 Leptinotarsa spec. (Coleoptera) 

 HAGGQVIST, G. Prof. — Embryol. Dept, Histol. Inst., Karolinska Inst.. 



Solnavagen 1, STOCKHOLM 60, Sweden 

 HAGSTRoM, B. E. B.A. — Wenner-Grens Inst, for exper. Biol., Norr- 

 tullsgatan 16, STOCKHOLM Va., Sweden 

 a. Physiology of fertilization. ( Echinodermata) 

 HAJRA, B. M.Sc. — Dept of Zool., Presidency Coll., College St, CAL- 

 CUTTA 12. India 

 a. Investigation of morphogenesis by cytochemical means. Amoeba spec. 



(Protozoa) 

 k. Effects of chemical transport in morphogenesis. Amoeba spec. (Coelen- 

 terata) (in collaboration with S. MOOKERJEE) 

 HALE. L. J. Ph.D. — Dept of Zool.. Univ. of Edinburgh. West Mains Rd. 

 EDINBURGH 9, Scotland 

 a. Morphogenetic features in asexual development. (Hydrozoa) 

 HALL, E. K. Ph.D., D.Sc. — Dept of Anat., School of Med., Univ. of 

 Louisville, 101 West Chestnut St. LOUISVILLE 2. Ky. U.S.A. 

 a. Drug effects on embryonic hearts (atropine, nicotine, physostigmine). 

 Rattus norvegicus (Rodentia) 

 HALLIDAY. R. B.Sc, Ph.D. — Agr. Res. Council Unit of Embryol., Dept 

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

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

 HAMA, T. M.A., D.Sc, Prof. — Biol. Lab.. Keia Univ.. YOKOHAMA. 

 Hiyoshi, Japan 

 a. Morphogenetical and chemical analysis of the organizer. Triturus pi/r- 



rhogaster (Urodela) 

 h. Studies on the influence of the pterins and- their like upon development 



in various animals. ( Atthtopoda, Pisces, Amphibia, etc.j 

 c. Developmental and chemical studies of the chromatophores. (Amphibia, 

 Pisces) 

 HAMARD. Miss M. — Lab. d'Embryol. exper.. Coll. de France, Place 

 Marcehn Berthelot, PARIS Ve, France 

 a. Morphologie comparee et morphogenese. (Ciliata) (en collaboration avec 

 E. FAURE-FREMIET) 

 HAMBURGER. K. Dr phil. — Biol. Inst, of the Carlsberg Foundation. 16, 

 Tagensvej. COPENHAGEN N, Denmark 



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