a. Prenatal development of bone. (Aves), Homo sapiens (Primates) 

 GRAY, J. Prof. — Univ. Museum of Zool., Univ. of Cambridge, Downing 



St. CAMBRIDGE, England 

 GRECA, M. LA Dr. Nat. Sci. — 1st. di Zool. dell'Universita di Napoli, Via 



Mezzocannone 8, NAPOLI, Italia 



a. Istologia e citologia delle gonadi, con particolare riferimento alia vitello- 

 genesi. (Orthoptera) 



b. Rigenerazione, con particolare riferimento ai blastemi regenerativi. (Po- 

 lychaeta) 



GREEN. Mrs. E. UFFORD A.B., M.A., Ph.D. — Dept. of Biol., Haverford 

 Coll., HAVERFORD, Pa., U.S.A. 



a. Morphological, cytological and cytochemical studies of the effects of 

 carcinogens on early development and larval growth. Rana spec. (Anura) 



b. Studies of mitotic and intermitotic times in embryos and tadpoles as 

 related to age and to sizes of cells and nuclei. Rana pipiens (Anura) 



GREGG, J. H. B.S., M.S., Ph.D. — Dept. of Biol., Univ. of Florida, GAI- 

 NESVILLE, Florida, U.S.A. 



GREGG, J. R. B.S., Ph.D. — Dept. of Zool., Duke Univ., DURHAM, N.C., 

 U.S.A. 



a. Metabolism of normal animals and hybrids. Rana pipiens, R. pipiens x 

 R. sylvatica (Anura) 



b. Metabolism of normal and hybrid tissue-breis. Rana pipiens, R. pipiens 



9 x R. sylvatica $ (Anura) 

 GREULICH R. C. B.A., Ph.D. — Dept. of Anat., School of Med., Univ. of 



California, LOS ANGELES, Cal., U.S.A. 

 GRIGNON, G. Lic.es Sci. — Lab. d'Histol., Fac. de Med., 31 Rue Lionnois, 



NANCY (Meurthe & Moselle), France 



a. Developpement de l'hypophyse. (Reptilia) 



b. Developpement de l'organe sub-fornical. (Mammalia) 



c. Developpement de l'hypophyse. (Aves) (en collaboration avec G. 

 CURY) 



GRINTEN, S. J. v. d., S.J. B.Sc. — Hubrecht Lab., Intern. Embryol. Inst, 



Janskerkhof 2, UTRECHT, Holland 

 a. Analysis of the relationships between activation and transformation in 



neural induction (reversibility of transformation). Amby stoma mexicanum 



(Urodela) 

 GROBSTEIN, C. Ph.D., M. I. I.E. — Dept. of Biol. Sci., Stanford Univ., 



STANFORD, Cal., U.S.A. 

 GRODZINSKI, Z. Prof. — Zaklad Anat. Porownawczej U.J. im H. Hoyera, 



sw. Anny 6, KRAKOW, Poland 



a. Pulsation of embryonic hearts. (Teleostei) 



b. Development of lymph heart. Salmo trutta (Teleostei) 



c. Yolk. (Elasmobranchii) 



GROENENDIJK (HUIJBERS), Mrs. M. M. M.D., D.Sc. — Dept. of 

 Anat., Univ. of Saskatchewan, SASKATOON, Canada 



a. Investigation on the development of the sexual apparatus by means of 

 implantation and castration experiments. Gallus domesticus (Aves) 



b. Interrelation between gonads and pituitary gland of the embryo. Ga//us 

 domesticus (Aves) 



GROSCH D. S. B.S., M.S., Ph.D. — Genetics Dept., N.C. State College, 

 353 Gardner Hall, RALEIGH, N.C, U.S.A. 



49 



