REFERENCES 



Extensive lists of literature may be found in the works of Schleip 

 (1929), Dalcq (1928 and 1941), Huxley and de Beer (1934), Spemann 

 (1936), Weiss (1939), Brachet (1944 and 1952), and Lehmann 

 (1945). Therefore, the following list contains in general only those 

 of the papers quoted in this book, which are not mentioned by, or 

 appeared after the publication of these works, to which the reader is 

 referred for all other references. 



1948 ANCEL, P. and P. VINTEMBERGER: Recherches sur le de- 



terminisme de la symetrie bilaterale dans I'oeuf des 

 Amphibiens. Bull. Biol. Frcmce Belg., Suppl. 31 (1948). 



1949 ANDRES, G.: Untersuchungen an Chimaeren von Triton und 



Bombinator. I. Entwicklung xenoplastischer Labyrinthe 

 und Kopfganglien. Genetica 24, 1 (1949). 



1946 ASPEREN, K. VAN: Pharynx regeneration in postpharyngeal 



fragments of Polycelis nigra (Ehrbg.). Proc. Kon. Ned. 

 Akad. V. Wetensch., Amsterdam 49, 1083 (1946). 



1947 AVEL, M. : Les f acteurs de la regeneration chez les Annelides. 



Rev. Suisse Zool. 54, 219 (1947). 



1948 BALINSKY, B. I.: Korrelationen in der Entwicklung der 



Mund- und Kiemenregion und des Darmkanals bei 

 Amphibien. Roux' Archiv 143, 365 (1948). 



1947 BALTZER, F. : Weitere Beobachtungen an merogonischen 

 Bastarden der schwarzen und weissen Axolotlrasse. Rev. 

 Suisse Zool. 54, 260 (1947). 



1934 BATAILLON, E. and TCHOU SU: L'analyse experimentale 

 de la fecondation et sa definition par les processus 

 cin^tiques. Ann. Sci. Nat. 17, 9 (1934). 



1936a BERRILL, N. J. and D. MEES: Reorganization and regenera- 

 tion in Sabella. 1. Nature of gradient, summation, and 

 posterior reorganization. J. exp. Zool. 73, 67 (1936). 



1936b Reorganization and regeneration in Sabella. 2. The in- 

 fluence of temperature. 3. The influence of light. J. exp. 

 Zool. 74, 61 (1936). 



1944 BRACHET, J, Embryologie chimique, Paris — Li^ge, 1944. 



1952 Le role des acides nucleiques dans la vie de la cellule 



et de I'embryon. Actwalites biochim., Lidge ■ — Paris 1952. 



1949 BUTLER, E. G. and O. E. SCHOTTE: Effects of delayed 



denervation on regenerative activity in limbs of Urodele 

 larvae. J. exp. Zool. 112, 331 (1949). 



