Owr-Pen 



c. Experimental investigations on the developing hypothalamus. Rattus spec. 

 (Rodentia) 

 OWRE, H. B. Ph.D. — Inst, of Marine Sci., Univ. of Miami, 1 Rickenbacker 

 Causeway, MIAMI 49, Fla., U.S.A. 

 a. Embryology. (Evertebrata) 

 OZEKI, K. D.Sc. — Biol. Inst., Coll. of Gener. Education, Univ. of Tokyo, 

 Komaba, Meguro-ku, TOKYO, Japan 

 a. Hormonal regulation of metamorphosis. Anisolabis maritima (Dermaptera) 

 PACKER, A. D. M.Sc, M.D. — Dept. of Anat. and Histol., Univ. of Ade- 

 laide, ADELAIDE, S. Austr., Australia 

 PAI, M. L. M.Sc, Ph.D. — Dept. of Biochem., Med. Coll., BARODA, India 

 a. Effect of diets containing different protein levels on liver regeneration 

 after partial hepatectomy. Rattus norvegicus (Rodentia) 

 PAI, S. Dr.rer.nat., F.I. I. E. — Lab. of Developm. Physiol., Inst, of Exper. 



Biol., Acad. Sinica, 320 Yo Yang Road, SHANGHAI, China 

 PANITZ, R. Dipl.-agr. — Inst. f. Kulturpflanzenforsch. der Deutschen Akad. 

 der Wiss. zu Berlin, GATERSLEBEN, Kreis Aschersleben, Deutsche 

 Demokratische Republik 

 a. Investigations about the effect of ecdysone (hormone of the prothoracic 

 gland) on the physiological activity of specific gene-loci in the salivary 

 gland chromosomes. Acricotopus lucidus (Chironomidae, Diptera) 

 PANTELOURIS, E. M. B.Sc, Ph.D. — Dept. of Zool., Queen's Univ.. 

 BELFAST, N. Ireland 

 a. Effects of radiation on foetuses, and means of alleviating them. Mus 

 musculus (Rodentia) 

 PAPACONSTANTINOU. J. M.S., Ph.D. — Dept. of Zool., Univ. of Con- 

 necticut, STORRS, Conn., U.S.A. 



a. Biochemical differentiation of lens. Gallus domesticus (Aves), Bos taurus 

 (Artiodactyla) 



b. Induction of lens. Gallus domesticus (Aves), Bos taurus (Artiodactyla) 

 PARK, Miss H. D. B.S., M.S., Ph.D. — National Inst, of Arthritis and Meta- 

 bolic Diseases, BETHESDA 14, Md., U.S.A. 



a. Induction of differentiation of the male gonad. Hydra littoralis (Hydroi- 

 dea) 



b. Relationship of growth and sexual differentiation to temperature changes. 

 Hydra pseudoligactis (Hydroidea) 



PARRISH. F. K. B.A., A.M. — Dept. of Biol., Agnes Scott Coll., DECATUR, 

 Ga., U.S.A. 



a. Investigation of spatial differences in cell surface permeability, and its 

 place in the differentiation of a cell. Nassarius vibex (Prosobranchia, Gas- 

 tropoda) 



b. Cytochemical studies on both normal and centrifuged eggs and embryos. 

 Nassarius vibex, N. obsoletus (Prosobranchia, Gastropoda) 



PARTRIDGE, T. A. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. 

 London, Gower St., LONDON W.C. 1, England 

 a. Study of the effects of antibodies on the behaviour of cells in tissue 

 culture. Gallus gallus (Aves), Mus musculus (Rodentia) 

 PASCHMA, M. D.Sc. — Zaklad Zool. Ogolnej. Inst. Zool., Uniw. we Wro- 

 clawiu, ul. Sienkiewicza 21, WROCLAW, Poland 

 a. Normal development and regeneration. (Enchytraeidae, Oligochaeta) 



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