The book is in three chapters, entitled respectively "Information"; "Infor- 

 mation Interaction and the Signature Principle", and ■'Organized Systems and 

 Gene Interactions". 



10. MODERN GENETICS 



vol. 1. 1965 

 by J. A. Serra Academic Press 



540 pp., 108 figs., 62 tbs., New York — London 



4 pis. Price: 105 s. 



This is a completely revised and partially rewritten edition of a book first 

 published in Portuguese in 1950, which has been successfully used as an 

 advanced, comprehensive text. The English text is to be pubhshed in three 

 volumes. Results up to 1962 or 1963 are included. 



Volume 1 is in three parts, which deal respectively with genetic transmission 

 and Mendelism, with recombination, genetical statistics and chromosome 

 structure, and with multiple alleles and gene subdivision. Volume 2 will deal 

 with physiological genetics and the inheritance of quantitative characters, and 

 volume 3 with cytoplasmic inheritance, nuclear mutations, and sex determin- 

 ation. Since vols. 2 and 3 are of more specific interest to our readers, they will 

 be reviewed more extensively as they appear. 



11. ANIMAL EMBRYOLOGY AND PRE-EMBRYONIC ONTOGENY 



1963 



by P. Chanturishvili State Publishing House „Sodna" 



238 pp., 23 figs. Tbilisi 



This book is written in Georgian, and is therefore announced by title only. 

 The author is head of the Laboratory of Animal Embryology, Institute of 

 Zoology of the Georgian Academy of Sciences, Tbilisi, U.S.S.R. 



12. INTERACTING SYSTEMS IN DEVELOPMENT 



1965 



by J. D. Ebert Holt, Rinehart & Winston 



Modern Biology Series New York etc. 



235 pp.. 130 figs, 

 (paper-bound) 



This new addition to the Modern Biology Series presents a modern and 

 refreshing approach for the student beginning embryology. The framework of 

 the book is given by emphasis on interaction, whether between the sperm and 

 egg at fertilization, between tissue types in organogenesis or in the develop- 

 mental aspects of immunity. Pains have been taken to elucidate the concepts 

 current in developmental biology and the experiments on which they are based, 

 and to indicate outstanding problems. 



The subjects dealt with are as follows: the origin of cell and individual 

 specificity and the component processes of development, interactions of egg and 

 sperm, cleavage and gastrulation, tissue interactions in organogenesis, inter- 

 actions of nucleus and cytoplasm, the molecular basis of gene expression during 

 development, the products of gene expression and their regulation, beyond the 

 ribosome, mechanisms of cell and tissue interactions, humoral regulation of 



338 



