a Descriptive and experimental morphology of ribosomes during maturation, fertilization, 

 segmentation and early gastrulation (electron microscope studies). Xenopus laevis (Anura) 



GARAVINI, Mrs. C. Dr. — 1st. di Anat. Comp., Univ. di Bologna, Via Belmeloro 8, BO- 

 LOGNA (103). Italia 



GARBER (BILSKY), Mrs. B. B. Ph.D. — Dept. of Zool.. Biol. Sci. Div., Univ. of Chicago, 

 1101 East 57th St., CHICAGO, 111. 60637. U.S.A. 



a Epithelial-mesenchymal interactions in the establishment and maintenance of skin epithelia, 

 feathers and hair. Gallus domesticus (Aves), Mus musculus (Rodentia) 



b Inhibitory effects on feather development in bispecific and heterochronous co-aggregates 

 of skin cells. Gallus domesticus (Aues). Mus musculus (Rodentia) 



GARCIA AUSTT. E. M.D., Prof. — Sect, of Exper. Neurol., Inst, of Neurol., Hosp. de 

 Clinicas, MONTEVIDEO. Uruguay 



a Regulation of sensory inflow in developing animals. Gallus domesticus (Aues), Rattus 

 norvegicus, Cavia cobaya (Rodentia) 



GARDENGHI, G. Dr. — 1st. di Zool., Fac. di Sci.. Univ. di Bologna. Via S. Giacomo 9. 

 BOLOGNA. Italia 



a I n V i t r o culturing of larval gonads. Bu[o bufo (Anura) 



GARGOUfL, Y. M. Dr.es Sci., Prof. — Lab. de Physiol, anim.. Fac. des Sci.. Route de 

 Limoges, 86-POITIERS, France 



a Electrophysiology of embryonic heart and muscles; study of the development of membrane 

 properties. Amby stoma tigrinum (Urodela), Cavia porcellus, Rattus norvegicus (Rodentia) 



b Histology and electron microscopy of the embryonic heart. Rattus norvegicus (Rodentia) 



GASSER, F. Dr.Biol. — Lab. de Biol, gener.. Fac. des Sci., 118 Route de Narbonne, 31- 

 TOULOUSE, France 



a Differenciation de diverses categories de proteine au cours du developpement; etude 

 cytochimique et electrophoretique. (Urodela) 



GATES, A. H. Ph.D. — Dept. of Gynecol, and Obstetrics, School of Med., Stanford Univ.. 

 PALO ALTO, Calif. 94304, U.S.A. 



a Factors influencing survival and development of the egg. Mus musculus (Rodentia) 



GAWRON (SKOWERSKA), Mrs. M. Ph.D. — Dept. of Gener. Biol., Silesian Acad, of 

 Med., Rokitnica, ZABRZE 8, Poland 



GAY. Miss H. Ph.D.. Prof . — Dept. of Zool.. Univ. of Michigan, ANN ARBOR, Mich. 

 48104, U.S.A. 



a Molecular structure of chromosomes during genetic activity, with special reference to 

 nucleic acids and proteins of heterochromatin and euchromatin (studied by electron micros- 

 copy, cytochemistry, autoradiography and biochemistry). Haplopappus gracilis (Compo- 

 sitae), Vicia faba (Leguminosae), IDrosophila melanogaster (Diptera) 



GAYER. J. — Dept. of Biol.. Med. Fac, Charles Univ., gimkova 870, HRADEC KRALOVfi, 

 Czechoslovakia 



a Myogenesis (fusions, multinuclearity) in vitro studied by phase-contrast microscopy 

 and time-lapse cinematography. Gallus domesticus (Aves), Mus musculus (Rodentia) 



b Myogenesis in vitro studied with RNA autoradiography. Gallus domesticus (Aves), 

 Mus musculus (Rodentia) 



GAYET, J. F. Dr.es Sci., Prof . — Inst, de Physiol. Gener., 15 Place Carnot, 54 NANCY, 

 France 



GAZE, R. M. Ph.D. — Physiol. Dept., Med. School, Univ. of Edinburgh, Teviot Place. 

 EDINBURGH 8, Scotland, U.K. 



a Functional aspects of regeneration of the optic nerve. Xenopus laevis, Rana temporaria 

 (Anura) 



b Cellular changes in tectum and eye after optic nerve section. Triturus cristafus (Urodela) 



c Functional results of tectal grafting. Carassius auratus (Teleostei) 



GEBHARDT, D. O. E. Ph.D. — Dept. of Pharmacol., Rijks Inst, voor de Volksgezondheid, 

 Sterrenbos 1 , UTRECHT, Netherlands 



a The action of drugs on embryonic development. Gallus gallus (Aves), Mus musculus 

 (Rodentia) 



h The action of drugs on limb regeneration. Ambysfoma mexicanum (Urodela) 



GEDALIA, I. Ph.D. — Lab. of Oral Chem. and Fluoride Research, Fac. of Dental Med., 

 The Hebrew Univ. Hadassah Med. School, P.O.B. 1172, JERUSALEM, Israel 



a Fluoride in the fetus (bones and teeth). Homo sapiens (Primates) 



b Fluoride in the fetus (bones and teeth); influence of maternal skeletal saturation with fluo- 

 ride on uptake by the newborn; role of the placenta in fluoride transfer; influence of 

 maternal fluoride intake on the mineral composition of the newborn (Ca, P, Mg, ash 

 amount and citrate content of the hard tissues). Rattus norvegicus (Rodentia) 



GEHRING, W. Dr.phil. — Zool.-vergl.Anat. Inst., Univ. Zurich, Kunstlergasse 16, 8006- 

 ZURICH, Schweiz 



a Determination and differentiation in cells of imaginal discs. Drosophila melanogaster 

 (Diptera) 



GEIGY, R. Dr., Prof. — Schweiz. Tropeninst, Socinstr. 57, BASEL, Schweiz 

 — Zool. Anstalt der Univ., Rheinsprung 9, 4000 BASEL, Schweiz 



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