Illb. 2a. 143 Hlb. 2a. 



Physical treatment and physical methods (d). 

 J. Studies on the action of a heat shock on development IIIc. 2. 



and cytochemistry on Amphibian eggs. 



J. L. A. BRACHET 

 J. Einfluss elektrischer Strome auf die friihesten Entwick- Ilia. 2a. d. 



lungsstadien der Amphibien. H. HARTWIG 



J. Azione dei raggi X sugli embrioni di Anfibi. studiata Ilia. 2a. d. 



con il metodo della parabiosi. 



Mrs L. URBANI— MISTRUZZI 



Chemical treatment (e). 

 E. Influence of Li on the development of Limnaea stagnalis 



(Gastropoda). Chr. P. RAVEN 



H. Effect of certain chemicals on development. Molgula, Ilia. 2a. e. 



Ciona and Styela (Tunicata). A. L. COLWIN 



V. Studies on the action of specific antisera on morpho- 

 genesis. Vertebrates. J. L. A. BRACHET 

 The influence of malonitril on the development of Ilia. 2a. e. 

 Amblystoma mexicanum. P. BANGMA Hid. 2. 

 Effects of antimitotics on early development. Rana 

 esculenta. 



Maria A. BARBASETTI and P. PASQUINI 

 Die Wirkung von Sulfa- Verbindungen auf die em- Ilia. 2a. e. 

 bryonale Entwicklung von Rana nigromaculata. 



Hsiao-Hui CHUANG 

 Effect of metabolic analogs on morphological and bio- Ilia. 2a. e. 

 chemical development. Amblystoma punctatum and Illb. 2c. 

 Rana pipiens. Miss E. NOEL 



(under direction of E. J. BOELL) 



Effect of chemical inhibitors on the development of 

 amphibian eggs. Rana and Amblystoma. T. S. HALL 

 Action du Lithium sur le developpement embryonnaire. Illb. 7. 



Triton et Axolotl (Urodeles). R. A. LALLIER 



The effect of nicotinamide and a-ketoglutaric acid on Illb. 2b. e. 

 insulin-induced hypoglycemia in chick embryos; relation 

 to micromelia. Gallus domesticus. E. ZWILLING 



Influence of hormones and vitamins (f). 



Study of the reactions of diploid and triploid larvae to IIIc. 2. 



pituitary hormones. Triturus viridescens. V. 2. 



G. FANKHAUSER 

 Thyroidectomy in diploid and triploid embryos. Effects IIIc. 2. 



of thiourea, etc. Triturus viridescens. V. 2. 



G. FANKHAUSER 

 Nutrition of embryo (g). 



Influence of different kinds of food on the development Illb. 19. 

 of Xenopus laevis. J. FABER 



L. Nutritional conditions in the incubating bird's egg. 



E. WITSCHI 



L. Investigating the nutrient requirements essential to mor- Ilia. 2a. g. 

 phogenesis and growth of organisms in the early stages 

 of chick development (pre-streak and streak blasto- 

 derms). N. T. SPRATT Jr. 



