tion. (Argasidae, Acarina, Arachnoidea) (in collaboration with A. 



AESCHLIMANN) 

 d. Entwicklung von humanpathogenen Erregern. (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) 

 h. Influence of various kations on development. Limnaea stagnalis (Gas- 

 tropoda) 

 c. Analysis of mechanisms of cytodifferentiation in cleaving eggs. Limnaea 



stagnalis (Gastropoda) 

 GfiNIS-GALVEZ. J. M. Med. Dr.. Ph.D. — Dept. de Anat. y Embriol. 



Fac. de Med.. Univ. de Salamanca. SALAMANCA. Spain 

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

 h. Immunochemical studies of lens differentiation. Gallus domesticus 



(Aves) 

 GEORGE, J. C. Ph.D.. Prof.. F.Z.S.. F.Z.S I. — Dept. of Zool., M.S. 



Univ. of Baroda. BARODA 2, India 

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



(Aves) 

 h. Physiology of metamorphosis with special reference to fat metabolism. 



Anfhrenus vorax, Trogoderma granarium (Dermestidae, Coleoptera) 

 GERISCH. G. Dr.rer.nat. — Zool. Inst, der Univ.. Katharinenstr. 20, FREI- 

 BURG i.Brsg.. Deutsche Bundesrepublik 

 a. Chemotaxis. Induktionswirkung von Aggregationszentren. Dictyoste- 



lium minufum (Acrasiales) 

 h. Zellkontaktbildung. Zelldifferenzierung, Entwicklungsdefekte bei Mu- 



tanten. Dictyostelinm discoideum (Acrasiales) 

 GERKEN. Miss S. E. B.Sc. — Inst, de Biol. Geral. Fac. de Filosofia. Univ. 



de Minas Gerais. Caixa Postal 253. BELO HORIZONTE, M.G., 



Brasil 

 a. Cyto-embryology (DNA and nuclear size during development). Hyla 



faber (Anura) 

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



PAVIA. Italia 



a. Electron microscopical studies on the oocytes. Thqsanozoon brocchii 

 (Polycladidea, Turbellaria) 



b. Enterochromaffin cell system (histochemical studies). (Tunicata) 



c. Egg-shell formation and vitelline cells (histochemical and histomorpho- 

 logical). (Plathelminthes) 



d. Histochemical localization of transferases and redox enzymes during 

 early development. (Ascidiae) 



GEYER (DUSZYnSKA). Mrs. I. Dr. — Dept. of Cytol.. Warsaw Univ., 

 Krakowskie Przedmiescie 26/28. WARSZAWA 64. Poland 

 — temporarily: Station de Zool. exper.. Univ. de Geneve, Route de 

 Malagnou 154, Chene-Bougeries, GENfeVE, Suisse 

 a. Experimental studies on germ line chromosomes; further studies on the 

 fate of germ cells with somatic chromosome number. (Cecidomyidae, 

 Diptera) 



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