Ila. lc. 129 Ilia. 2a. 



L. Production exp. de monstres simples chez les oiseaux. 



E. WOLFF 

 L. A study of artificially produced duplicitas anterior. 

 Gallus domesticus. 



M. ABERCROMBIE and Miss M. R. MORGAN 



2a. Complete development or development during special periods 

 (e.g. early, late, etc.) of whole organism. 



General subjects. 



A. Reproduction asexuee. Regeneration, fitudes des fac- IV. 2. 

 teurs conditionnant l'apparition de la sexualite. For- 

 mation des cellules sexuelles. Developpement embryon- 



naire. Eponges. P. BRIEN et Mme M. H. HERLANT 



B. Experimental analysis of the early developmental 1. 2a. 

 stages of the Sea-Anemones. Sagartia leucolena (An- 

 thozoa). K. SEMBRAT 



C. Reproduction asexuee. Regeneration, fitudes des fac- IV. 2. 

 teurs conditionnant l'apparition de la sexualite. For- 

 mation des cellules sexuelles. Developpement embryon- 



naire. Oligochetes. 



P. BRIEN et Madame M. H. HERLANT 



D. Structure and development of Cape Crawfish, Jasus 1. 2a. 

 lalandii (Decapoda) . Mrs B. I. SILBERBAUER IV. 3. 



V.3. 



F. Normal and experimental development. Saccoglossus 1. 2a. 

 (Enteropneusta) . 



A. L. COLWIN and Mrs L. H. COLWIN 



G. Reproduction asexuee. Regeneration. Etudes des fac- IV. 2. 

 teurs conditionnant l'apparition de la sexualite. For- 

 mation des cellules sexuelles. Developpement embryon- 



naire. Coelenteres. P. BRIEN 



G. Entwicklungsgeschichte der Seeigel. (Monografie, c. 1. 2a. 



100 S.). L. v. UBISCH Illb. 2a. 



G. Development of Thyone (Holothuria) . L. H. COLWIN I. 2a. 



H. Reproduction asexuee. Regeneration. Etudes des fac- IV. 2. 



teurs conditionnant l'apparition de la sexualite. Forma- 

 tion des cellules sexuelles. Developpement embryon- 

 naire. Tuniciers. P. BRIEN 



H. Ascidian development. Ascidiopsis paratropa. V. 3. 



R. L. FERNALD 



I. Development of all systems of the toadfish in relation Illb. 2a. 

 to behavior. Th. BATTY, H. C. TRACY 



and J. WINBLAD 

 J. Cytology during embryogenesis. Amphibians. Illb. 2a. 



G. COLOMBO 

 M. Early development. Mammalia. W. J. HAMILTON Illb. 2a. 

 M. Studies on the rat egg. Mus norvegicus. Ilia. lb. 



J. S. NICHOLAS 



