QUERNER, H. Dr. rer. nat. — Inst, fur exp. Krebsforschung der Univ. Hei- 

 delberg, Voss-Strasse 3. HEIDELBERG, Deutschland 



a. Hormonphysiologische Untersuchungen. (Cyprinodontidae, Teleostei) 



b. Differenzierung primarer und sekundarer Geschlechtsorgane in vitro. 

 (Cyprinodontidae, Teleostei) 



QURESHI. W. H. M.Sc. — Dept. of Zool., Government Coll., LAHORE, 

 Pakistan 

 a. Reproduction and development. Suncus murinus (Soricidae, Insectivota) 

 RADECKA. Mrs. E. ERDMAN M.Ph. — Zaklad Zool. Ogolnej. Inst. 

 Zool., Uniw. we Wrodawiu, ul. Sienkiewicza 21, WROCLAW, Poland 

 a. The morphogenetical functions of the thyroid gland and hypophysis. 

 (Amphibia, Reptilia, Aves) 

 RAFFERTY, K. A. Jr. B.S., M.S., Ph.D. — Dept. of Anat., School of Med., 

 Johns Hopkins Univ., 709 N. Wolfe St., BALTIMORE 5, Md., U.S.A. 

 a. Histospecificity of neoplastic agents. Rana pipiens (Anura) 

 RAMENSKAIA, Mrs. G. P. — Inst, of Animal Morphol. of the Acad, of Sci. 

 of the U.S.S.R., Lenin Avenue 33, MOSCOW V-71, U.S.S.R. 

 a. Action of DNA on morphogenesis. Bombyx mod (Lepidoptera) (in 

 collaboration with Mrs. T. A. BEDNJAKOVA and G. I. GINZBURG) 

 RAMIREZ de ARELLANO, Miss M. I. R. B.S., M.S., Ph.D., M.B., M.D. — 

 Lab of Perinatal Physiol., NINDB, School of Med., SAN JUAN, P.R., 

 U.S.A. 

 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) 



b. Study of circulation in the maternal placenta. Macaca mulatta, Homo 

 sapiens (Primates) 



c. Determinations of blood, amniotic and intervillous space pressures 

 throughout pregnancy. Macaca mulatta (Primates) (in collaboration with 

 G. W. CORNER, Jr. and W. N. LONG) 



RANCK, J. B.S., M.D. — Lab. of Perinatal Physiol., NINDB, School of 



Med., SAN JUAN, P.R., U.S.A. 

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



Milano, Via Celoria 10, MILANO, Italia 

 RANZOLI, F. Dr., Prof. — 1st. di Zool., Via S. Giacomo 9, BOLOGNA, 



Italia 



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

 (Ascidiaceae) 



b. Regeneration and morphogenesis of the thoracic segments. Salmacina 

 incrustans (Serpulidae, Polychaeta) 



c. Development of gonads. (Urodela) 



d. Cytosexual differentiation. (Pulmonata, Gastropoda) 

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



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



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



b. Early embryology. Marinogammarus obtusatus (Gammaridae, Crustacea) 

 RASMUSSEN, L. cand.mag. — Biol. Inst, of the Carlsberg Foundation, 16, 



Tagensvej, COPENHAGEN N., Denmark 

 a. Studies on growth and division in pure cultures. Acanthamoeba spec. 

 (Amoebidae) (in collaboration with E. ZEUTHEN) 



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