Illb. 17. 156 IHb. 19. 



T Sex determination in amphibians by steroid hormones. 



Anurans. C. Y. CHANG 



J. Experimental sex determination by steroid hormones, 

 and by overripeness of the egg. Anurans. E. WITSCHI 



HV. Determination of sex in birds and mammals. Gallus 

 domesticus and Cavia cobaya. 



J. H. M. G. van DETH 



L Recherches sur les hormones sexuelles embryonnaires. Ilia. 18. 

 Oiseaux. Miss D. PFLEGER 



L. Role des hormones dans la differentiation du sexe par Ilia. 17. 

 les methodes d'injections d'hormones, des greffes coelo- 

 miques, des castrations embryonnaires, des explana- 

 tions. Poulet. Mile Y. OSTERTAG, G. STRUDEL. 

 Madame Em. WOLFF et Et. WOLFF 



18. Endrocine glands (development, structure and functioning). 



General subjects. 



V. Transplantation of cultivated endocrine organs. Diffe- Ilia. 18. 

 rences caused by autologous, heterologous and homo- 

 logous media. Verre&rares. J. LANGMAN 



M. Endrocrine studies and development. Mammals. Mus Ilia. 18. 

 musculus. R. C. BLOUNT 



Special glands. 



J. Relations of the hypophysis to development. Ambly- Ilia. 18. 

 stoma. R. F. BLOUNT 



L. Primary genesis of thyroid follicles in explants and Ilia. 18. 

 factors governing colloid formation. Gallus domesticus. 



P. J. GAILLARD 



M. Functioning of the glands of internal secretion in the 

 fetus (hypophysis, gonads, adrenals, thyroid). Mus 

 (Rattus norvegicus albinus) . L. J. WELLS 



19. Growth and differentiation (including mitosis). 



General subjects. 



D. Plasmatische Verhaltnisse — Ectosomenphanomen. Cy- 

 clops (Entomostraka). H. STICH 



G. Investigations if there occur any changes in the nucleus 

 in course of differentiation. Sea urchin egg. 



S. HORSTADIUS 

 Mitosis. 



EV. Quantitative investigations of the rate of cell division 

 in marine eggs, in relation to cellular metabolism, and 

 ionic environment. Arbacia punctulata, Asterias forbesii, 

 Chaetopterus pergamentaceus. H. SHAPIRO 



C. Chemische Beeinflussing der Tu 6//e*-Mitose durch 

 Chinone. G. ANDRES 



G. -f- J. Study with Cartesian divers of mitotic rhythm in IIIb.5. 



metabolism during cleavage period. Echinoderms and 

 Amphibians. E. ZEUTHEN 



