164 



Communicalions of tlie .Jnstitut International aEraDryoIogie" 

 (Embryological Section of the I.U.B.S.) 



In response to a wish expressed at the last meeting of the I.I.E., in Italy 

 a national Embryological Group has been formed for the promotion of 

 cooperation between the Italian workers in the field of embryology, both 

 animal and vegetal. To this end, the Group will hold periodical meetings 

 for the exchange of views and informations, and the discussion of researches 

 in progress. Its first meeting was held in Bologna, March 30 — 31, 1953. After 

 a business session, a number of informal communications were presented. It 

 was decided that a second meeting shall be held in the autumn of 1953 in 

 Naples. Prof. Pasquini, Bologna, is the Secretary of the Italian Embryological 

 Group. 



The Proceedings of the Symposium held at Utrecht on August 27th — 29th, 

 1952 (The biochemical and structural basis o[ morphogenesis), will appear 

 before the end of 1953. 



Persons interested should apply to "Archives Neerlandaises de Zoologie", 

 CO. the Librarian, Zoological Station, den Helder, Netherlands. 



The Secretary. Chr. P. RAVEN 



Reviews of recently puLIisIieJ textbooks on Embryology 



„LA RfeGfiNfiRATION ET LES PROBLfeMES DE LA 



MORPHOGENfiSE" 



1932 



by M. Abeloos ..Collection des actualites biologiques" 



253 pp. with 57 figs in text Gauthiers-Villars 



Paris 



This book, which was already published in 1932 without the appearance 

 of a new edition, cannot, of course, be called up to date, but gives nevertheless 

 a rather comprehensive survey of the phenomenon of regeneration in the 

 animal kingdom and in plants. Although the theoretical aspects are extensively 

 discussed, their classification is not always well defined; e.g. no clear dis- 

 tinction has been made between the processes of regulation in early develop- 

 ment and the actual process of regeneration, processes which besides many 

 similarities, differ from each other in several respects. 



The subject has been treated chronologically, so that first the onset of 

 regeneration and the formation of a regeneration blastema is discussed and 

 then the aspects of growth and differentiation, the origin of polarity and its 

 role in the process of regeneration, the segregation of the regeneration blastema 

 and the anomalies in regeneration. At the end of each chapter rich biblio- 

 graphical data are given. 



It is our impression that in general the theoretical aspects had the main 

 interest of the author, so that the facts form more or less material for 

 illustration of certain points of view. The text has been more strongly sub- 

 divided than would have been necessary when the subject would have been 

 approached primarily from the analytical side and the theoretical discussion 

 ■would have been placed at the end of the book. 



