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RAMSEY Miss E. M. A.B., M.D. — Dept of EmbryoL, Carnegie Inst, of<br />

Washington, Wolfe and Madison Sts, BALTIMORE 5, Md. U.S.A.<br />

a. Placentation. Study of marginal sinus and venous drainage of placenta.<br />

Macaca mulatta. Homo sapiens (Primates)<br />

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

Coll., Strand, LONDON W.C.2, England<br />

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

Milano, Via Celoria 10, MILANO, Italia<br />

a. Proteins in embryonic determination. (Echinodermata and Amphibia)<br />

b. Protoplasmic structure.<br />

RANZOLI, F. Dr — 1st.<br />

MODENA, Italia<br />

di Zool. e Anat. comp.. Via Universita 4,<br />

a. Nucleolar changes and cycle<br />

(Gastropoda, Ascidiacea)<br />

of the ribonucleic acids during oogenesis.<br />

b. Sexual differentiation and hermaphroditism. Hydroides norvegica (Ser^<br />

pulidae, Polychaeta)<br />

RAPPAPORT, Jr.. R. B.S., M.S., Ph.D. — Biol. Dept, Union Coll.,<br />

SCHENECTADY 8. N.Y., U.S.A.<br />

a. Role of water in growth and morphogenesis. Rana pipiens (Amtra)<br />

h. Early embryology. Marinogammams obtusatus. (Gammarides. Crustacea)<br />

RASMONT, R. Lie. Sci. Zool. — Lab. de Zool., Fac. des Sci., Inst. Zool.<br />

Torley-Rousseau, Univ. libre de Bruxelles, 50 Avenue F. D. Roosevelt,<br />

BRUXELLES, Belgique<br />

a. Physiology of asexual reproduction. (Spongillidae, Porifera)<br />

RAUNICH, L. Ph.D., M.D. — 1st. di Anat. Comp., Via Belmeloro<br />

BOLOGNA (103), Italia<br />

8,<br />

a. Development of blood and vascular system. Petromyzon (Cyclostomata),<br />

Amia and Lepidostens (Holostei)<br />

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

c. Determination of neural plate. Triton, Ambystoma (Urodela)<br />

d. Neural crest development. (Amphibia)<br />

e. Effect of low temperature on early development. (Amphibia)<br />

ration with P. PASQUINI)<br />

(in collabo-<br />

f. Action of carcinogenic hydrocarbons. (Amphibia)<br />

g. Steroids during development (chemical detection) (Amphibia)<br />

RAVEN, Chr. P. F.I.I.E., F.R.A., Dr Sc, Prof. — Zool. Lab. der<br />

Univ., Janskerkhof 3, UTRECHT, Holland<br />

Rijks<br />

a. Influence of lithium on morphogenesis. Aplysia limacina (Gastropoda)<br />

b. Influence of various kations on development. Limnaea stagnalis (Gastropoda)<br />

(in collaboration with H. L. de BEAUFORT, J. BOENDER, W.<br />

L. M. GEILENKIRCHEN, R. J. M. LEEUWENBERG, J. A. LEUS-<br />

SINK, Miss F. LODDER. W. de ROVER, Miss A. M. G. v. d.<br />

J.<br />

SANDE, A. F. SCHREURS and W. ZOUTEWELLE)<br />

c. Development of stomodaeum. Limnaea stagnalis (Gastropoda)<br />

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

Charles and 34th Sts, BALTIMORE 18, Md, U.S.A.<br />

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

Janskerkhof 2, UTRECHT, Holland<br />

83

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