Mb. 2c. c. 147 



ilD. ZC. C. 



HV. Enzyme activities of embryo and extra-embryonic mem- I. 3. 



branes of chick and rat. L. R. FITZGERALD 



HV. Enzymes in the development of the embryo. Cytochrome 

 oxidase and lipase. Chick and pig. 



J. ALVAREZ GUTIERREZ, W. BUNO 

 and R. E. GONZALEZ MARINO 



L. Nature of the yolk and its changes in development. 

 Gallus domesticus. M. ATLAS 



L. Patterns of development of enzymes in embryos; 

 differentiation of enzymes in relation to differentiation 

 of functional ability in embryonic organs. Gallus do- 

 mesticus. F. MOOG 



L. Plasma proteins during development in the chick em- 

 bryo. G. W. NACE and A. M. SCHECHTMAN 



M. Cytochemistry of early stages of development. Rodentia 

 and Insectivora. A. M. DALCQ in collaboration 



with coworkers 



M. Histochemistry of mammalian eggs. Mus and Homo. 



B. KONOPACKA 

 Physical treatment and physical methods (d). 



D. Development of Drosophila using genetic principles IIIc. 2. 



and radio-active materials to trace the embryonic 

 components. D. F. POULSON 



J. Phosphorus metabolism in the amphibian embryo studied Mb. 2a. d. 

 with radio-active phosphorus. Rana pipiens. 



P. B. KUTSKY 



J. Studies in protein synthesis in the amphibian embryo. 

 /. Uptake of radio-active glycine. //. Uptake of radio- 

 active methionine. Hula regilla. R. M. EAKIN 

 Chemical treatment (e). 



G. Continued studies on the protein chemistry of normal 

 and lithium-treated developing sea urchin eggs. (Stu- 

 dies on amino acids, peptides and enzymes). Para- 

 centrotus lividus, Psammechinus miliaris and other sea 

 urchins. T. GUSTAFSON 



J. Determination of Li in amphibian eggs, treated with 

 LiCl. Amblystoma. J. }. BEZEM 



J. Effect of specific enzyme poisons on embryonic develop- 

 ment. Correlation of developmental events with activity 

 of specific enzymes. Rana temporaria and Triton spp. 



R. A. BEATTY 

 Influence of hormones and vitamins (f). 



L. Thymectomy and the calcium content of the bird's egg. 



I. TORO 



M. The embryos and fetuses of normal, vitamin E-deficient Mb. 2a. b. 

 and vitamin E-rich guinea-pigs are being investigated Md. 2. 



histologically and histochemically with special reference 

 to the distribution of lipids and carbohydrates, in order 

 to find out the influence of vitamin E on the develop- 

 ment and on the lipid and carbohydrate metabolism. 

 Cavia cobaya (Rodentia). Z. MENSCHIK 



