c A sectional atlas of embryonic stages. Homo sapiens (Primates) 



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



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

 GAUTHIER, Miss G. F. Dr. — Lab. of Cell. Biol., Dept. of Biol. Sci., Wellesley Coll., 



WELLESLEY, Mass. 02181, U.S.A. 

 a Postnatal differentiation on three fiber types in skeletal muscle (electron microscopy and 

 histochemistry). Rattus noruegicus (Rodentia) (in collaboration with Miss H. A. PADY- 

 KULA and Miss J. M. TAYLOR) 

 b Differentiation of neuromuscular junctions in skeletal muscle (electron microscopy and 

 histochemistry). Rattiis noruegicus (Rodentia) (in collaboration with Miss H. A. PADY- 

 KULA and Miss J. M. TAYLOR) 

 c Ovarian-uterine-placental relationship (electron microscopy and histochemistry). Didelphys 

 virginiana (Marsupialia) (in collaboration with Miss H. A. PADYKULA and Miss J. M. 

 TAYLOR) 

 d Lipid transport by the yolk sac placenta (electron microscopy and histochemistry). Rattus 

 noruegicus (Rodentia) (in collaboration with Miss H. A. PADYKULA and Miss J. M. 

 TAYLOR) 

 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 micro- 

 scopy, cytochemistry, autoradiography and biochemistry). Haplopappus gracilis (Com- 

 positae). Vicia faba (Leguminosae). Drosophila melanogaster (Diptera) 

 GAYER, J. Dr. — Dept. of Biol., Med. Fac, Charles Univ., Simkova 870, HRADEC 



KRALOVfi, Czechoslovakia 

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



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

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



Mus musculus (Rodentia) 

 c Nucleolus during myogenesis in vitro studied by phase-contrast time-lapse cinemato- 

 graphy. Gallus domesticus (AuesK Rattus noruegicus (Rodentia) (in collaboration with 

 V. PUZA and M. HROCH) 

 GAYET, J. F. D.Sc, Prof. — Lab. de Physiol. Gener., Fac. des Sci., 15 Place Carnot, 

 54 NANCY, France 

 (no embryological work in progress) 

 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 laeuis. Rana tempocaria 



(Anura) 

 h Cellular changes in tectum and eye after optic nerve section. Triturus cristatus (Urodela) 

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

 d Development of visual connections in embryos. Xenopus laeuis (Anura) 

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



Sterrenbos 1, UTRECHT, Netherlands 

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



(Rodentia) 

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

 c The embryotoxicity of anti-kidney serum and its localization by immunofluorescence. Mus 



musculus (Rodentia) 

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

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

 (no embryological work in progress) 

 GEHRING, W. J. Ph.D., Prof. — Dept. of Anat. Yale Univ., NEW HAVEN, Conn. 06510, 



U.S.A. 

 a Developmental biology of imaginal discs. Drosophila spp. (Diptera) 

 b Cell heredity in cultures of imaginal discs. Drosophila melanogaster (Diptera) 

 c Biochemical studies on differentiation in disc cells. Drosophila melanogaster (Diptera) 

 d Studies on mutants interfering with disc development. Drosophila melanogaster (Diptera) 

 GEIGY, R. Dr., Prof. — Schweiz. Tropeninst., Socinstr. 57, 4051 BASEL, Switzerland 



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

 a Spermatogenese, Ovogenese, Embryonalentwicklung und Endocrinologie. (Ixodoidea, Acar- 



ina, Arachnoidea) (in collaboration with A. AESCHLIMANN) 

 b Ubertragung von Spirochaetosen iiber das mutterliche Ovarium auf die Embryonen und 

 damit auf die Nachkommen der nachsten Generation. (Argasidae, Acarina, Arachnoidea) 

 (in collaboration with A. AESCHLIMANN) 

 GEILENKIRCHEN, W L. M. Ph.D. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, 



UTRECHT. Netherlands 

 a Metabolism and respiration of egg and embryo. Limnaea stagnahs (Gastropoda) 

 h Influence of various kations on development. Limnaea stagnalis (Gastropoda) 



63 



