GEILENKIRCHEN, W. L. M. M.Sc. — Zool. Lab. der Rijks Univ., Jans- 

 kerkhof 3, UTRECHT. Holland 



a. Metabolism and respiration of egg and embryo. Limnaea stagnalis (Gas- 

 tropoda) 



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

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



c. Influence of lithium on mitosis and cleavage. Limnaea stagnalis (Gastro- 

 poda) (in collaboration with E. D. NIJENHUIS and Chr. P. RAVEN) 



d. Influence of various alcohols on development. Limnaea stagnalis (Gas- 

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



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



Florida, GAINESVILLE, Florida, U.S.A. 

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



Baroda, BARODA 2, India (Aves) 



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



GERARD, P. M.D., F.I.I.E., Prof.honor. — Fac. de Med. de l'Univ., 97 Rue 



aux Laines, BRUXELLES, Belgique 

 GEYER (DUSZYNSKA), Mrs. I. Dr. — Committee on Biophysics, Univ. 



of Chicago, 5640 Ellis Avenue, CHICAGO 37, 111., U.S.A. 



a. Genetic significance of the chromosomes of the germ line. (Cecido- 

 myidae, Diptera) 



b. Effects of ionizing radiation on chromosomes. (Diptera) 



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

 with somatic chromosome number. (Cecidomyidae, Diptera) 



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

 NA, Italia 



a. Origin of germ-cells, development of gonads, gametogenesis, regenera- 

 tion and reproductive biology. (Chaetognatha) 



b. Regeneration and RNA. (Turbellaria) 



GHOSAL, S. B.Sc. (Hons) —Dept. of Zool., Presidency Coll., College St., 



CALCUTTA 12, India 



a Effects of cell free proteins on differentiation. Gallus gallus (Aves) (in 



collaboration with S. MOOKERJEE, S. ADHIKARI and Miss B. NUR- 



JEHAN) 



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



a. Larval development. (Syllidae) 

 GILANI, S. H. M.Sc. — Dept. of Zool., Government Coll., LAHORE, Pa- 

 kistan 

 a. Reproduction and development. Rana tigrina (Anura) 

 GILBERT, Miss C. M.Sc, D.Sc. (Rand) — Physiol. 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 me- 

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



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

 sis, Dasyatis americana (Elasmobranchii) 



GILES, E. T. M.Sc, Ph.D., D.I. C. — Dept. of Zool., Univ. of New Eng- 

 land, ARMIDALE, N.S.W., Australia 

 a. Postembryonic development of reproductive organs and genitalia. Labi- 

 dura riparia truncata (Dermaptera) 



45 



