Roz-Sax 



R6iEWSKA. Miss J. W. Physician — Inst, of Histol. & Embryol., Acad. 



of Med.. Narutowicza 60, LODZ. Poland 

 RUDEWICZ. Mrs Cz. Physician — Inst, of Histol. 6 Hmbryol.. Acad, of 



Med.. Narutowicza 60. LODZ. Poland 

 RUDNICK. Miss D. Ph.D. — Osborn Zool. Lab.. Yale Univ.. NEW 



HAVEN 11. Conn.. U.S.A. 

 a. Glutamine metabolism in development. Ambijstoma (Urodcla) and Callus 



(Aves) 

 RUGH. R. A.B.. M.A.. Ph.D. — Radiological Research Lab., Dept of 



Radiol.. Coll. of Physicians & Surgeons, Columbia Univ., 630 West 



168th St. NEW YORK 32, N.Y., U.S.A. 



a. Radiobiology. 



b. E.xpcrimental embryology. 



c. Effect of ionizing radiations on the fetus. 



RUNNSTROM, J. A. M. F.I.I.E., Ph.D.. M.D.. Prof. — Wcnner-Grens 

 Inst, for e.xper. Biol.. Norrtullsgatan 16. STOCKHOLM Va., Sweden 

 a. Induction phenomena in development. (Echinodermata) 



RUTH. R. F. Ph.D. — Dept of ZooL, Indiana Univ., BLOOMINGTON, 

 Ind., U.S.A. 

 a. Biochemical and immunochemical analysis of the synthesis and distribu- 

 tion of the contractile proteins, actin and myosin, in the development of 

 the heart in the early embryo. Gallus gallus (Aves) (in collaboration with 

 J. D. EBERT) 



RUUD. Miss G. Cand.real. — Zool. Lab.. Univ. of Oslo, OSLO-BLIN- 

 DERN, Norway 



RYKE. P. A. J. M.Sc. Ph.D. — Dept van Dierkunde, Potchefstroom Univ.. 

 POTCHEFSTROCM. Suid-Afrika 



SABBADIN, A. Dr — Isf. di Zool. e Anat. comp.. Fac. di Sci.. Via Loredan 

 10. PADOVA, Italia 



a. Differentiation of gonads. (Amphibia and Reptilia) 



b. Sexual and asexual reproduction. (Ascidiacea) 



SALA, M., S. J. Dr — 1st. di Zool. c Anat. Comp., Fac di Sci., Via Loredan 

 10, PADOVA. Italia 

 a. Distribution of activating and transforming principles in the archenteron 

 roof of the neurula (analysis of the regional induction of the nervous 

 system). Amby stoma mexicanum (Urodela) 

 h. Determination of the peripheral nervous system. (Aniira) 

 SALZGEBER, Miss B. Lie. es Sci. — Lab. de Zool., Inst, de Zool. et de 

 Biol, gen., Fac. des Sci., 12 Rue de I'Universite, STRASBOURG, France 



a. Recherches sur Taction d'agents physiques et chimiques sur la differencia- 

 tion sexuelle. 



b. Recherches sur I'intersexualite experimentale produite par irradiation aux 

 rayons X. (Aves) (en collaboration avec Et. WOLFF) 



c. Action de substances chimiques sur les gonades embryonnaires cultivees 

 in vitro. 



SAMANO BISHOP, Miss A. Dr — Instituto de Biologia. Univ. Nac. Auton. 

 de Mexico. Casa del Lago, Chapultepec. MEXICO. D.F.. Mexico 



a. Origin and development of the acustic ganglia. Sccloponis microlepidotus 

 (Iguanidac. Reptilia) 



b. Development. Tomodactijlus fusciis Davis 6 Dixon (Amphibia) 



