a. Utilization of Ca salts of the larval endolymphatic sac in the minerali- 

 zation of skeletal segments in vitro. Bu[o bu[o (Anura) 

 GUERRIER, P. — Lab. de Zool. exper., Fac. des Sci. de Lyon, 43 Bd. de 

 I'Hippodrome. VILLEURBANNE, France 

 a. Etude microcinematographique du developpement. (Nematoda; Spiralia) 

 GUIRAO-PEREZ, M. Med.Dr.. Prof. — Inst.F.Oloriz, Fac. of Med.. Univ. 

 of Granada. GRANADA, Spain 

 a. Fetal developmental features and congenital prenatal and neonatal 

 morphofunctional disturbances (macro- and microscopical). Homo 

 sapiens (Primates) 

 h. Normal fetal developmental patterns: measures, histological structures, 

 histochemical selective methods, systematic necropsies, etc. Gallus 

 domesticus ( Aves) , Homo sapiens (Primates) 

 GULLINE Miss H. F. B.Sc.(Hons.) — Biophysics Lab.. Univ. of Tasma- 

 nia, HOBART, Tasmania, Australia 

 GUNTER, G. Dr. — Gulf Coast Research Lab.. OCEAN SPRINGS. Miss.. 



U.S.A. 

 GURAYA, S. S. M.Sc. (Hons.). Ph.D. — Dept. of Zool., Panjab Univ., 

 CHANDIGARH. India 

 a. Comparative histochemical studies on the developing oocytes and their 

 folhcle cells (lipids, carbohydrates, nucleic acids and proteins). 

 Various spp. (Acrania; Anura; Marsupialia; Rodentia; Chiroptera; 

 Primates), Homo sapiens (Primates) 

 GURDON. J. B. M.A., D.Phil. — Dept. of Zool, Parks Rd., OXFORD, 

 England 

 a. Experimental embryology, especially nuclear transplantation. Xenopus 

 spp. (Anura) 

 GUSTAFSON. T. Fil.Dr., M.I.I.E.. Prof. — Wenner-Gren's Inst, for exper. 

 Biol.. Norrtullsgatan 16, STOCKHOLM Va.. Sweden 



a. Morphogenetic movements. (Echinoidea) 



b. Enzyme induction and repression in cell cultures. 



GUTIERREZ. M. Dr. — Departamento de Anat.. Catedra de Anat. II. Fac. 



de Med.. CADIZ, Spain 



— private address: Calle Valverde 20, CADIZ. Spain 

 a. Embryological development of blood cells. Gallus gallus (Aves) 

 GUYARD, A. Lic.es Sci. — Lab. de Zool.. Inst, des Sci.Nat.. Place Mare- 



chal Leclerc, BESANgON, France 

 a. Recherches sur la differenciation de la glande hermaphrodite. Helix 



aspersa (Pulmonata, Gastropoda) (en collaboration avec L. GOMOT) 

 GWATKIN. R. B. L. M.A., Ph.D., — King Ranch Lab. of Reprod. Physiol., 



School of Veter. Med., Univ. of Pennsylvania, 25th and Locust Streets, 



PHILADELPHIA 4, Pa.. U.S.A. 

 a. Effect of viruses on early development and their role as a cause of birth 



defects. (Mammalia) 

 GYfiVAI (TOTH). Mrs. A. T. — Inst, of Exp.Med. of the Hung. Acad, of 



Sci.. Morphol. Dept., Szigony u.43, BUDAPEST VIII, Hungary 



a. Comparative investigations on the conducting system of the embryonic 

 heart. Various spp. (Vertebrata) 



b. Changes in the electrophysiological properties of the heart muscle fibres 

 during ontogeny. Various spp. (Vertebrata) 



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