Pou 74 Rau 



POULSON, D. F. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ., NEW 

 HAVEN 11, Conn., U.S.A. (no data received over this year) 



PRETO PARVIS, Mrs V. Dott.Med.. Prof. — 1st. di Anat. umana norm. 

 deirUniv. di Milano, Via MangiagaUi 31, MILANO, Itaha. 



a. Modifications of contents in nucleinic acids and of the nuclear apparatus 

 in nervous cells during development in relation with their degree of 

 growth and functional maturity. (Methods: Piekarsky-Robinow; Feul- 

 gen; Golgi; Cajal) (Mammalia) 



b. Study of the development of cytoarchitecture and genesis of the furrows 

 in some areas of the cerebral cortex. Homo and Felis (Mammalia) 



c. Morphological and histochemical studies of histogenesis of chondroid 

 and mucous tissues. (Aves and Mammalia) 



QUERNER, H. Dr rer. nat. — Inst, fiir Entwicklungsphysiol. der Univ. 

 Koln, Amsterdamerstr. 36, KOLN-Riehl. Deutschland. 



a. Hormonphysiologische Untersuchungen. (Cyprinodontidae, Teleostei) 



b. Untersuchungen iiber Wachstum und SexuaHtat. (Annelida) 

 RADECKA, Mrs. E. M.Ph. — Zaklad Zool. Ogolnej, Inst. Zool., Uniw. 



we Wroclawiu, ul. Sienkiewicza 21, WROCLAW, Polska (Poland) 



a. Mitochondria during the development. Parascaris equorum (Nematoda) 



RADKOWA, M. Vet. Phys. — Zaklad Histol. i Embryol. Akad. Me- 



dycznej, ul. Chalubinskiego 6a, WROCLAW, Polska (Poland). 



(no embryological work in progress) 

 RAMSEY, Mrs E. M. A.B., M.D. — Dept of Embryol., Carnegie Inst, of 



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

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



Macaca mulatta (Primates) 

 RAMULT, M. Ph.D. — Dept of Zool., Univ. of Edinburgh, West Mains 



Rd.. EDINBURGH 9, Scotland (U.K.) 

 a. The later stages of development and growth. (Turbellaria) 

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



Coll., Strand, LONDON W.C. 2, England (U.K.) 



(no data received over this year) 

 RANZI, S. Dott. Sci. Nat., Prof. — 1st. di Zool. e Anat. Comp., Univ. di 



Milano, Via Celoria 10, MILANO, Italia, 

 a. Proteins in embryonic development. ( Echinodermata) , (Amphibia) and 



Gallus domesticus (Aves) 

 RAPPAPORT Jr. R. B.S.. M.S. — Osborn Zool. Lab., Yale Univ.. NEW 



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

 a. Regional density changes in the developing embryo in relation to growth 



and differentiation. Rana pipiens and Amblystoma punctatum (Am- 

 phibia) (under direction of J. S. NICHOLAS and E. J. BOELL) 

 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, 

 Pisces), Amia and Lepidosteus (Holostei. Pisces) 



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



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



d. Lateral mesoderm explants in tail bud stage. (Anura) 



e. Effect of low temperature on earlv development. (Amphibia) (in colla- 

 boration with P. PASQUINI) 



f. Action of carcinogenic hydrocarbons. (Amphibia) 



