Yu 99 Zw 



YU. Yang Fu B.Sc. — Lab. for Developm. Physiol.. Inst, of Exper. Biol., 

 Acad. Sinica. 865 Chang Ning Rd, SHANGHAI, China, 

 a. Isolation, purification, chemistry and the mode of action of eye stalk 

 hormone. (Crustacea) (in collaboration with S. PAI, Shen Shu MING 

 and K. P. CHANG) 

 ZAAIJER, Miss J. J. P. Biol. Dra — Lab. for Exper. Histol.. Fac. of Med.. 

 Univ. of Leyden, Wassenaarseweg, Boerhaavekwartier, LEIDEN, 

 Holland, 

 a. Factors governing dentin formation. Mus musculus (Rodentia) 

 h. Role of the odontoblasts in the formation of secondary dentin. Mus 



musculus (Rodentia) 



c. Cartilage and bone formation in vitro. Homo sapiens (Primates) 



ZACWILICHOWSKA, Miss K. D.Sc. — Zool. Dept of the Jagellonian 



Univ., KRAKOW (Cracow), St Anne 6, Poland. 



a. Early developmental stages. Asellus aquaticus L. (Isopoda, Crustacea) 



ZEUTHEN. E. Dr Phil. — Lab. of Zoophysiology, Nat. Sci. Fac, Univ. 



of Copenhagen, Juhane Mariesvej 32, COPENHAGEN 0, Denmark. 



a. Study with Cartesian divers of mitotic rhythm in metabolism during 

 cleavage period. ( Echinodermata and Amphibia) (in collaboration with 

 H. HOLTER) 



b. Determination of desoxyribonucleic acid in eggs and embryos, evidence 

 of cytoplasmic desoxyribosides. (Amphibia) (in collaboration with E. 

 HOFF— JoRGENSEN ) 



c. Mitotic rhythm in reduced weight (weight below water) during cleavage. 

 Psammechinus microtuberculatus (Echinoidea) 



ZUCKERMAN. S. M.A.. M.D.. D.Sc, M.R.C.S.. L.R.C.P., F.R.S.. Prof. 



— Dept of Anat., The Med. School, Birmingham Univ., Edgbaston, 



BIRMINGHAM 15, England (U.K.) 

 a. Study of oogenetic function. (Rodentia), (Anthropoidea), Mustela 



putorius furo L. (Carnivora) 

 ZWILLING, E. Ph.D., Assoc Prof. — Dept of Genet., Coll. of Agric. 



Univ. of Connecticut, Storrs Agric. Exper. Stat., STORRS, Conn., 



U.S.A. 



a. Effect of adrenal cortical hormone (alone and with insulin) on glycogen 

 content of the embryo's yolk-sac membrane. Callus domesticus (Aves) 



b. Effect of thyroxin on carbohydrates in the embryo. Callus domesticus 

 (Aves) 



c Analysis, by means of tantalum-foil blocking, of the development of the 

 tail. Callus domesticus (Aves) (in collaboration with Miss M. M. 

 CRAIG) 



