Ebert 28 Es 



b. Investigating the time and manner of origin, and role of vitamins in 

 the early blastoderm. Chick (Birds) 

 EDDS Jr. M. V. S.A.. M.A., Ph.D. — Dept of Biol., Brown Univ., 

 PROVIDENCE 12, R.I., U.S.A. 



a. Study of factors influencing the spreading of intact axons in partially 

 denervated muscles. (Vertebrates) 



b. Study of factors influencing the diameter of nerve fibers. (Vertebrates) 

 EDGAR, G. W. F. Med. drs — Anat.-Embryol. Lab. der Rijks Univ., 



Janskerkhof 3, UTRECHT, Holland, 

 a. Investigations into the lipidchanges in the central nervous system of the 



growing rabbit compared with the normal and pathological development 



of the myelin sheath. Lepus cuniculus (Mammalia) 

 EDWARDS, L. F. B.A., M.Sc, Ph.D., Prof. — Dept of Anat., Ohio State 



Univ., COLUMBUS 10, Ohio, U.S.A. (no data received over this year) 

 EEDEN J. A. van M.Sc. — Dept van Dierk., Potchefstroom Univ., POT- 



CHEFSTROOM, Suid-Afrika. (stud: Sool. Inst., STELLENBOSCH) 



a. Ontogenesis of the skull of Ascaphus truei. (Amphibia) 



b. Ontogenesis of the skull and visceral muscles of Xenopus laevis till the 

 beginning of metamorphosis. (Anura, Amphibia) (Normal Table) 



EGMOND, Miss M. T. C. van — Zool. Lab. der Rijks Univ., Janskerkhof 3, 

 and Hubrecht Lab., Janskerkhof 2, UTRECHT, Holland. 



a. Centrifugation of cleavage stages. Limnaea stagnalis (Gastropoda) (in 

 collaboration with F. J. VERHEYEN) 



b. Experimental analysis of the neurulation process in Xenopus laevis. 

 (Anurans) (in collaboration with P. D. NIEUWKOOP) 



ELOFF, F. C. D.Sc. —Zool. Inst., Fac. of Sci., Univ. of Pretoria, PRE- 

 TORIA, South Africa. 



a. Morphological investigation of the organ of Jacobson and the nasal- 

 floor cartilages in an embryo of Galago senegalensis, the African night- 

 ape. (Mammalia) 



b. Observations on the chondrocranial roof of certain rodents. (Mammalia) 

 ELSHOUT, Miss A. M. Arts — Anat.-Embryol. Lab. of the Univ. of 



Leyden, Fac. of Med., Boerhaavekwartier, Wassenaarseweg, LEIDEN, 

 Holland, 

 a. Listing and investigation of the historical collection of the Institute con- 

 taining a large number of embryological preparations. {Man and other 

 Vertebrates) 

 ELWOOD, M. A. B.Sc. — Dept of Embryol., Univ. Coll. London, Gower 

 Str., LONDON W.C. 1, England, 

 a. Quantitative studies on the early development of the nervous system 

 and associated structures. Amblystoma (Amphibia) 

 ENDO. Y. M.Sc. — Embryol. Section, Dept of Biol., Fac. of Sci., Tokyo 

 Metropolitan Univ., Meguro-ku, TOKYO, Japan, 

 a. A chemical study of the process of fertilization membrane formation in 

 sea-urchin eggs. Various species of Echinoidea 

 ENGLANDER, H. Dr med. et rer. nat. — Inst. f. Entw.physiol., Kerpener- 

 str. 13, KOLN-Lindenthal, Deutschland. 

 a. Regionale Induktion bei Urodelen. 

 ESPOSITO SEU MARGHERITA, Miss M. Dr — 1st. di Zool., Via Ar- 

 chirafi 18, PALERMO, Italia, 

 a. Hatching enzymes in Amphibians. 



