a The early embryology, placentation and development of morphological 

 peculiarities. Eremitalpa granti (Broom) (Insectivota) 

 GUGGENHEIM, P. A.B., M.D. — Dept of Anat., School of Med., ihe 

 Creighton Univ., OMAHA, Nebraska, U.S.A. 

 a The significance and fate of embryonic mesenchyme m the middle ear. 

 ■ Morphologic study of ears of embryos from 1-27 days. Rattus norve^ 

 qicus (Holtzmann strain) (Rod2ntia) (in collaboration with L. F. L.Lti- 

 MENTS and A. SCHLESINGER) . .. c 



b Freeze-drying studies with refined cytologic study and investigation ot 

 changes in ground substance of mesenchyme. Rattus "o;:^^^f ^^"^,^5 : 

 mann strain) (Rodentia) (in collaboration with L. P. CLEMENTS and 

 A. SCHLESINGER) , ^ . ^ ... 



c Fate of the mesenchyme in the middle ear in dwarf animals and their 

 "normal" heterozygous littermates. Rattus (Rodentia) (in collaboration 

 with L. P. CLEMENTS and A. SCHLESINGER) 

 GUSTAFSON, G. S. Fil.mag. — Zootom. Inst., Univ. of Stockholm, lib 



Drottninggatan, STOCKHOLM, Sweden 

 GUSTAFSON, T. Fil. Dr — Wenner-Grens Inst, for exper. Biol., INorr- 

 tulisgatan'l6, STOCKHOLM Va., Sweden 

 a Studies on the mechanism of gastrulation. (Echinoidea) 



b. Growth promoting substances and vitamines in embryonic material. 

 (Echinoidea), Xenopus (Anura) 



c. The effect of various antimetabolites on embryonic development. (Tic/ii- 

 noidea) (in collaboration with S. HoRSTADIUS) 



d. Enzyme adaptation in embryonic and adult cells studied by means ot 

 tissue culture technique. r , r m ^ • 



GUTH L A B M.D. — Section Devel. and Regen., Lab. of Neuroanatomi- 

 cal Sci.. NINDB. Nat. Inst, of Health, BETHESDA, Md, U.S.A. 

 a Neuronal specificity in the autonomic nervous system. (Mammalia) 



GUYeNOT, E. Dr Med.. Dr Sci. — Inst, de Zool. et Anat. comp., Univ. 

 de Geneve. Rue de Candolle, GENEVE, Suisse 



GYLLENSTEN, L. J. W. Med. Dr — Embryol. Dept, Histol. Inst.. Karo- 

 linska Inst., Solnavagen 1. STOCKHOLM 60, Sweden 



a. Postnatal development of lymphatic system; endocrinological influences 

 (thyroid, thymus). Cavia cobaya (Rodentia) 



b. Postnatal development of newborns in different oxygen concentrations, 

 with special consideration to malformations of the eyes, lungs and car- 

 diovascular system. Mus musculus (Rodentia). 



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

 Fak Univ. Zurich, Kiinstlergasse 16, ZURICH 6, Schweiz 

 a. Field organisation of the genital imaginal disc. Drosophda spec. 



(Diptera) /r\., \ 



b Developmental analysis of lethal factors. Drosophua spec. (UipteraJ 

 c. Chromatographic studies of fluorescent substances and ammo acids. 

 Drosophila spec, and Ephestia spec. (Insecta) , , . r^ 



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

 ninggatan, STOCKHOLM, Sweden , , , 

 a. Studies on the development of Rathke's pouch and the hypophysis. 

 (Cudostoma; Ganoidei; Teleostei) 

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

 Lamartine, TALENCE, Gironde, France 



41 



