b Germ cell differentiation (Bidders organ differentiation). Bufo bufo (Anura) 



c Germ cell determinant. Spadclla cephaloptera (Chaeotgnatha) 



GIANNETTI, A. M.D. — Dept. of Dermatol.. Univ. of Pavia, School of Med.. Policlinico 

 S.Matteo, PAVIA, Italia 



a Mucoproteins in fetal skin. Homo sapiens (Primates) 



GIBLEY, Ch. W.. Jr. Ph.D. — Dept. of Pathol.. M.D.Anderson Hospital and Tumor Inst., 

 The Univ. of Texas. 6723 Bertner Ave.. HOUSTON. Tex. 77025. U.S.A. 



a Histochemistry and fine structure of the developing excretory system. Rana pipiens 

 (Anura), Gallus domestictis (Aves), Mus muscuhts (Rodentia) 



b Histochemistry and electron microscopy of differentiating experimentally induced renal 

 carcinomas. Mesocricetus aiiratus (Rodentia) 



GIBSON, I. Ph.D. — School of Biol. Scis.. Univ. of East Anglia, Wilberforce Road. NOR- 

 WICH, NOR 85C. England 



a Nuclear-cytoplasmic interaction in single cells. Paramecium aurelia (Ciliata) 



h Techniques of nucleic acid hybridization as applied to developing systems. Echinus esculen- 

 tus. Asterias vulgaris ( Echinodermata ) , Xenopus laevis (Anura), Gallus domesticus (Aves) 



GIDHOLM. L. Fil.lic. — Zool. Inst., Univ. of Uppsala, Villavagen 9. UPPSALA, Sweden 



a Larval development. (Syllidae, Polychaeta) 



• GILBERT, P. W. Ph.D., Prof. — Div. of Biol. Sci., Cornell Univ., ITHACA, N.Y. 14850. 



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 jamaiciensis, Dasyatis ame- 

 ricana (Elasmobranchii) 



c Relationship of mother to developing young, both structural and functional. (Elasmo- 

 branchii) 



GILES, E. T. Ph.D., D.I.C. — Dept. of Zool., Fee. of Sci., Univ. of New England, ARMI- 

 DALE 5 N., N.S.W.. Australia 



a Postembryonic development of reproductive organs and genitalia. Labidura riparia trun- 

 cata (Dermaptera) 



GILLIN. R. L. Fil.lic. — Wenner-Gren's Inst, for exper. Biol., Norrtullsgatan 16. STOCK- 

 HOLM Va, Sweden 



GILLOT (PERDRIX). Mrs. S. — Section de Biol, generale et appliquee. Fac. des Sci.. Univ. 

 de Lyon. 43, Bd. du 11 Novembre 1918, 69-VILLEURBANNE, France 



a Etude autoradiographique du metabolisme des acides nucleiques dans les noyaux endopo- 

 lyploides. Drosophila melanogaster (Diptera). Bombyx mori, Galleria mellonetta (Lepid- 

 optera) 



GINSBURG, Mrs. A. S. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the 

 U.S.S.R.. Vavilov St. 26, MOSCOW V-133, U.S.S.R. 



a Cytological. electron microscopical and experimental investigations of the fertilization 

 process. Acipenser giildenstadti, A. stellatus (Chondrostei) . Misgurnus fossilis, Lebistes 

 reticulatus (Teleostei) 



GINSBURG. Mrs. M. M.Sc. — Dept. of Zool., Hebrew Univ. of Jerusalem, JERUSALEM, 

 Israel 



a Experiments to determine the potencies of the first two blastomeres. Mus muscufus (Roden- 

 tia) 



GINSBURGER-VOGEL, T. Agr. — Lab. de Genet. Evolutive du C.N.R.S., 91 GIF-sur- 

 YVETTE, France 



a Recherche sur la determination genetique du sexe et de I'intersexualite. Orchestia gam- 

 marellus ( Amphipoda, Crustacea) 



GINZBURG, G. I. Cand.biol.sci. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R., 

 Vavilov St. 26, MOSCOW V-133. U.S.S.R. 



a Biosynthesis of nucleic acids and proteins in oogenesis (cytochemistry and autoradio- 

 graphy). Pyrrhocaris apterus, Glossophania camplanafa, Coreus marginatus (Hemiptera), 

 Asterias rubens ( Asteroidea) . Lebistes reticulatus (Teleostei) and other spp. 



GIPOULOUX. J.-D. Dr. — Lab. de Biol. anim.. Fac. des Sci. de Bordeaux. 351 Cours de la 

 Liberation, 33-TALENCE. France 



a Etude experimentale de la morphogenese de I'appareil genital. (Anura) 



h Evolution des cellules germinales. (Anura) 



c Etude de I'ultrastructure embryonnaire. (Anura) 



GIRARD (DECHAMBE). Mrs. C. Dr.en Biol.anim. — Lab. de Biol. anim.. Fac. des Sci. de 

 Bordeaux. 351 Cours de la Liberation. 33-TALENCE. France 



a Modalites et facteurs de formation de I'ostium et de I'oviducte. (Anura) 



GIRARD. H. Lic.es Sci. — Inst. d'Embryol. et Teratol. exper. du C.N.R.S., 49 bis Av. de la 

 Belle Gabrielle. 94-NOGENT-sur-MARNE, France 

 — Lab. d'Embryol. exper. du Coll. de France, 1 1 Place M. Berthelot, PARIS Ve, France 



a Physiologie cardio-vasculaire (motricite) de I'embryon. Gallus gallus (Aves) 



• GIROUD, A. Prof. — Lab. d'Histol.-Embryol. B, Fac. de Med. de Paris, 45 Rue des Sts. 



Peres, PARIS Vie, France 



57 



