Gustafson 37 Hale 



b. Continued studies on the "dorsoventral" (oral-aboral) organization of 



the unfertilized sea urchin egg. Echinocacdium cordatum and other sea 



urchins (Echinoderms) 

 GUYfiNOT, E. Dr Med., Dr Sc. — Inst, de Zool. et Anat. comp., Univ. 



de Geneve, Rue de Candolle, GENfiVE, Suisse. 



(no data received over this year) 

 GYLLENSTEN, L. J. W. Med. lie. — Hist. Dept, Embryol. Dept, Karolinska 



Inst., Solnavagen 1, STOCKHOLM 60, Sweden. 



a. Development of the musculature of the urinary bladder of homo. (Mam- 

 malia) 



b. Postnatal histogenesis of the lymphatic system under the influence of 

 experimental infections, exposures to X-ray and after thymectomy. 

 Guinea pig (Mammalia) 



c. Functional and morphological neurogenesis in duplicitas experimentally 

 induced by implantation of a secondary dorsal blastoporal lip into the 

 ventral marginal zone of young gastrulae. Triturus, Xenopus (Amphibia) 

 (started at the Hubrecht Laboratory, Utrecht, Holland) 



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

 Univ. Zurich 6, Schweiz. 



a. Regeneration and differentiation of the notochord. Triton species 

 (Amphibia) 



b. Merogony-experiments. Triton species (Amphibia) 



c. Field organization of the genital imaginal disc. Drosophila species (In- 

 secta) 



d. Developmental analysis of lethal factors. Drosophila species (Insecta) 

 HAFFEN, Miss K. Lie. es Sc. — Lab. de Zool. de la Fac. des Sci. et Lab. 



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

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

 a. Etude du developpement et de la regression du mesonephros chez 

 l'embryon d'Or'seau. Gallus (Aves) (En collaboration avec Et. WOLFF) 

 HAGET, A. — Fac. des Sci. de Bordeaux, 40, Rue Lamartine, TALENCE 

 (Gironde), France, 

 a. Recherches experimentales sur le developpement des Insectes: Etude 

 des facteurs de la morphogenese embryonnaire. 

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

 Solnavagen 1, STOCKHOLM 60, Sweden, 

 a. Induction of polyploidy in frogs and mammals. 

 HAIJE, Miss S.C.A. — Hubrecht Lab., Internat. Embryol. Inst., Janskerk- 

 hof 2, UTRECHT, Holland, 

 a. The development of the pineal body in the chick. (Aves) 

 HAKANSSON, R. Tandlakare — Tornblad-Inst. of comp. Embryol., Anat. 

 Dept of the Univ. of Lund, LUND, Sweden, 

 a. Methodes for studying the histochemistry of the foetes with isotopes. 

 (Mammals) (team-work with G. GLIMSTEDT) 

 HALE, L. J. B.Sc. — Dept of Zool., Univ. of Edinburgh, West Mains Rd, 

 EDINBURGH 9, Scotland. 



a. The growth of isolated scleral bone primordia as chorio-allantoic grafts 

 and in culture media. Gallus domesticus (Aves) 



b. Histochemical studies on the early development of the scleral bone. 

 Gallus domesticus (Aves) 



