RAMSEY Miss E. M. A.B., M.D. — Dept of EmbryoL, Carnegie Inst, of 



Washington, Wolfe and Madison Sts, BALTIMORE 5, Md. U.S.A. 

 a. Placentation. Study of marginal sinus and venous drainage of placenta. 



Macaca mulatta. Homo sapiens (Primates) 

 RANDALL. J. T. Prof., F.R.S. — M.R.C. Biophysics Res. Unit., King's 



Coll., Strand, LONDON W.C.2, England 

 RANZI, S. F.I.I.E., Ph.D., ProL — 1st. di Zool. e Anat. Comp., Univ. di 



Milano, Via Celoria 10, MILANO, Italia 



a. Proteins in embryonic determination. ( Echinodermata and Amphibia) 



b. Protoplasmic structure. 



RANZOLI, F. Dr — 1st. di Zool. e Anat. comp.. Via Universita 4, 

 MODENA, Italia 



a. Nucleolar changes and cycle of the ribonucleic acids during oogenesis. 

 (Gastropoda, Ascidiacea) 



b. Sexual differentiation and hermaphroditism. Hydroides norvegica (Ser^ 

 pulidae, Polychaeta) 



RAPPAPORT, Jr.. R. B.S., M.S., Ph.D. — Biol. Dept, Union Coll., 

 SCHENECTADY 8. N.Y., U.S.A. 

 a. Role of water in growth and morphogenesis. Rana pipiens (Amtra) 

 h. Early embryology. Marinogammams obtusatus. (Gammarides. Crusta- 

 cea) 

 RASMONT, R. Lie. Sci. Zool. — Lab. de Zool., Fac. des Sci., Inst. Zool. 

 Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt, 

 BRUXELLES, Belgique 

 a. Physiology of asexual reproduction. (Spongillidae, Porifera) 

 RAUNICH, L. Ph.D., M.D. — 1st. di Anat. Comp., Via Belmeloro 8, 

 BOLOGNA (103), Italia 



a. Development of blood and vascular system. Petromyzon (Cyclostomata), 

 Amia and Lepidostens (Holostei) 



b. Action of growth-substances on tail-regeneration. Rana, Bufo (Anura) 



c. Determination of neural plate. Triton, Ambystoma (Urodela) 



d. Neural crest development. (Amphibia) 



e. Effect of low temperature on early development. (Amphibia) (in collabo- 

 ration with P. PASQUINI) 



f. Action of carcinogenic hydrocarbons. (Amphibia) 



g. Steroids during development (chemical detection) (Amphibia) 

 RAVEN, Chr. P. F.I.I.E., F.R.A., Dr Sc, Prof. — Zool. Lab. der Rijks 



Univ., Janskerkhof 3, UTRECHT, Holland 



a. Influence of lithium on morphogenesis. Aplysia limacina (Gastropoda) 



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

 poda) (in collaboration with H. L. de BEAUFORT, J. BOENDER, W. 

 L. M. GEILENKIRCHEN, R. J. M. LEEUWENBERG, J. A. LEUS- 

 SINK, Miss F. J. LODDER. W. de ROVER, Miss A. M. G. v. d. 

 SANDE, A. F. SCHREURS and W. ZOUTEWELLE) 



c. Development of stomodaeum. Limnaea stagnalis (Gastropoda) 

 RAWLES, Miss M. E. Ph.D. — Dept of Biol., The Johns Hopkins Univ., 



Charles and 34th Sts, BALTIMORE 18, Md, U.S.A. 



— (visiting Prof., I-VII, 1956) Hubrecht Lab., Intern. Embryol. Inst., 



Janskerkhof 2, UTRECHT, Holland 



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