a Spermatogenese, Ovogenese, Embryonalentwicklung und Endocnnologie. (Ixodoidea. 



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

 b Uebertragung von Spirochaetosen iiber das miitterliche 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 stagnalis (Gastropoda) 

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

 c Analysis of mechanisms of cytodifferentiation in cleaving eggs. Limnaea stagnalis (Gastro- 

 poda) 

 OeNIS-GALVEZ, J. M. Med.Dr., Ph.D., Prof. — Dept. de Anat. y Embriol., Fac. de Med., 



Univ. de Salamanca, SALAMANCA, Spain 

 a Developmental physiology of the eye. Gallus domesticus (Aves) 

 b Immunochemical studies of lens differentiation. Gallus domesticus (Aves) 

 GEORGE, J. C. Ph.D., Prof. — Dept. of Zool., M.S. Univ. of Baroda, BARODA 2, India 

 a Physiology of development. Limnaea spec. (Gastropoda), Gallus spec. (Aves) 

 b Physiology of metamorphosis with special reference to fat metabolism. Anthrenus vorax, 



Trogoderma granarium (Dermestidae, Coleoptera) 

 GEORGES, Miss D. Lic.es Sci. — Lab. de Zool., Fac. des Sci. de Grenoble, Domaine 



Universitaire, 38-SAINT-MARTIN-d'HERES, France 

 a Development of the gonads: factors regulating spermatogenesis and oogenesis. Ciona intes' 



tinalis (Ascidiacea) 

 GfiRARD, H. — Lab. d'Embryol., Fac. de Med., Univ. de Nancy, 31 rue Lionnois. 54 NAN- 

 CY, France 

 a Ultrastructure du cortex de I'oeuf. (Amphibia) (en collaboration avec A. DOLLANDER 



et Mrs. R. HATIER-AUTELIN) 

 GfiRARD, Miss M. J. Lie. et D.E.A. — Lab. de Biol. Gener., Fac. des Scis. de Reims, B.P. 



347, 51 REIMS, France 

 a Abnormal development. Lineus ruber (Nemertini) 

 GERISCH, G. Dr.rer.nat. — Zool. Inst, der Univ.. Katharinenstr. 20, 78-FREIBURG i.Brsg., 



Deutsche Bundesrepublik 

 a Chemotaxis, Induktionswirkung von Aggregationszentren. Dictyostelium minutum (Acra- 



siales) 

 b Zellkontaktbildung, Zelldifferenzierung, Entwicklungsdefekte bei Mutanten. Dictyostelium 



discoideum (Acrasiales) 

 GERKEN, Miss S. E. B.Sc. — Inst, de Biol. Geral, Fac. de Filos., Univ. de Minas Gerais, 



Rua Carangola 288, Caixa Postal 253, BELO HORIZONTE, Brasil 

 a DNA content and nuclear size. Crotalus t. terhficus, Phyllodtyas schotti (Ophidia) 

 GERNEKE, W. H. D.Sc. — Dept. of Anat.. Fac. of Veter. Sci.. Univ. of Pretoria. P.O. 



ONDERSTEPOORT, South Africa 

 a Studies on embryonic and fetal development. Equus caballus (Perissodactyla) 

 b Development of the pharynx. Equus caballus (Perissodactyla) 



GERZELI, G. Prof. — 1st. di Anat. comp., Univ. di Pavia, Piazza Botta 10, PAVIA. Italia 

 a Electron microscopical studies on the oocytes containing polyphenolic substances. Thysano- 



zoon brocchii (Polycladidea, Tucbellaria) 

 b Egg-shell formation and vitellin cells (histochemical and histomorphological). (Plathtl- 



minthes) 

 c Allantois and urinary bladder (histochemical and histomorphological). (Chelonia) 

 GEUSKENS, M. Dr.Sci.Zool. — Lab. de Morphol. anim., Univ. libre de Bruxelles, 67. Rue 



des Chevaux, RHODE-ST-GENESE. Belgique 

 a Etude au microscope electroniques des hybrides. Paracentcofus spec. $ x Arbacia spec. (5 



(Echinoidea) 

 h Etude au microscope electronique des effets de I'hydroxyuree sur les oeufs en developpe- 



ment. Paracentrotus spec. (Echinoidea) 

 c Etude par autoradiographie electronique de la synthese proteique dans les fragments 



nuclces et anuclees d'oeufs. Arbacia spec. (Echinoidea) 

 GEYER (DUSZYiqSKA), Mrs. I. Dr. — Dept. of Anat., Med. Coll., Cornell Univ.. 1300 



York Ave., NEW YORK, N.Y. 10021, U.S.A. 

 a Experiments on nuclear transplantation. Drosophila metanogaster (Diptera) 

 GEZELIUS, N. G. B. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9, UPPSALA, 



Sweden 

 a Studies with labelled precursors of the correlations between protein synthesis and morpho- 

 logical development and of the interactions between nucleus and cytoplasm. Paracentrotus 



lividus, Psammechinus miliaris (Echinoidea) 

 GHIANI, P. M.D., Dr.Sci.Nat., Prof.inc. — 1st. di Anat. e Fisiol. Comp., Univ. di Genova, 



Via Balbi 5, GENOVA, Italia 

 GHIRARDELLI, E. Prof. — 1st. Zool. e Anat. comp., Univ., Via Alfonso Valerio 32. 



TRIESTE, Italia 

 a Germ cell differentiation. (Planariidae, Turbellaria) 



56 



