Gcilcnkirchcn-Gon 



a. Metabolism and respiration of egg and embryo. Limnaca stagnaV.s (Gas- 

 tropoda) 

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

 poda) (in collaboration with Chr. P. RAVEN) 

 c. Mitotic rhythm in reduced weight (weight below water) during cleavage. 

 Psammcchinus microtuberculatus (Echinoidea) (in collaboration with 

 E. ZEUTHEN. Copenhagen) 

 GENNARO Jr J F. Ph.D. — Dept of Anat., Coll. of Med., State Univ. 



of New York, 350 Henry St, BROOKLYN 1, N.Y., U.S.A. 

 G£RARD. P. M.D., F.I. I.E., Prof. honor. — Fac. de Med. de I'Univ.. 97 



Rue aux Laines. BRUXELLES, Beigique 

 GEYER— DUSZYnSKA, Mrs I. Mgr.phil. — Dept of Cytol., Warszawa 

 Univ., Krakowskie Przedmiescie 26/28. WARSZAWA, Poland 



a. Experimental studies on the influence of protoplasmic factors on the 

 elimination process of somatic chromosomes in embryos. (Cecidomyidae, 

 Diptera) 



b. Experimental studies on germ line chromosomes. The fate of germ cells 

 with somatic chromosome number. (Cecidomyidae, Diptera) 



GHIRARDELLI, E. Prof. — 1st. di Zool.. Via S. Giacomo-9. BOLOGNA. 

 Itaha 



a. L'action de quelques sels sur le developpement de I'oeuf. Spadella spec. 

 (Chaetognatha) 



b. La formation des cellules germinales. Spadella spec. (Chaetognatha) 



c. Regeneration. Spadella spec. (Chaetognatha) 



GIDHOLM, L. Fil.kand. — Zool. Inst., Uppsala Univ.. UPPSALA, 



Sweden 

 a. Larval development. (Syllidae) 

 GILBERT, Miss C. M.Sc, D.Sc. (Rand) — Anat. Dept, Med. School, 



Univ. of Witwatersrand, Hospital Hill, JOHANNESBURG, S. Africa 

 GILBERT. P. W. A.B., Ph.D.. Prof. — Dept of Zool.. Cornell Univ., 



ITHACA. N.Y., U.S.A. 



a. Studies on reproductive habits and structures, especially the clasper 

 mechanism and the function of the siphon sacs. ( Elasmobranchii) 



b. Gestation and parturition in representative species. Urolophus jamaicien- 

 sis, Dasyatis americana (Elasmobranchii) 



GILLMAN, J. D.Sc, M.B., Ch.B. (Rand), Prof. — Physiol. Dept, Med. 



School, Univ. of Witwatersrand. Hospital Hill. JOHANNESBURG, 



South Africa 



(no embryological work in progress) 

 GINSBURG, Mrs A. S. Cand.Biol.Sci. — Inst, of Animal Morphol. of the 



Acad, of Sci. of the U.S.S.R.. Bolshaja Kalushskaja 33, MOSCOW 



V-71. U.S.S.R. 

 a. Cytology of fertilization; experimental polyspermy. Huso huso, Acipen- 



ser giildenstadti, A.stellatus (Acipenseriformes, Chondrostei) 

 GIROUD, A. F.I. I.E., Prof. — Lab. d'Embryol., Fac. de Med., 45 Rue des 



Sts Peres, PARIS Vie, France 



a. Recherches sur I'influence teratogene des avitaminoses maternelles. Mus 

 rattus (Rodentia) 



b. Recherches sur I'influence teratogene des intoxications maternelles. Mus 

 rattus (Rodentia) 



c. Etude des cas teratologiques individuels. Homo sapiens (Primates) 



40 



