zymes. The last of these gives information on 13 hydrolases, 9 oxidoreductases. 

 and three enzymes of other classes. Part three is on systemic and local factors 

 in repair and regeneration, mainly hormones (pituitary, adrenocortical, 

 thyroid, and gonadal), but also temperature, bioelectricity, vitamins, and 

 other biological stimulators. The last chapter of the book is a summary in 

 which some attention is devoted to the possible improvement of regeneration 

 in higher mammals and man in connection with surgery. 



The book is illustrated with an abundance of well-chosen figures, mostly 

 photomicrographs and electron micrographs, both original and taken from 

 other sources. Their reproduction is reasonable to good. The bibliography 

 covers close to 100 pages. The subject index could have been more detailed, 

 since the book will frequently be used as a work of reference. For the same 

 reason it is a pity that an author index is lacking. 



37 THE EMBRYOGENESIS-TYPES 

 AND THEIR ADAPTATIVE SIGNIFICANCE 



1968 

 By G. A. Schmidt Publishing House "Nauka" 



231 pp., 79 figs. Moscow 



This book is written in Russian and is announced only briefly. The author 

 is head of the Institute of Evolutionary Morphology and Ecology of Animals 

 of the Academy of Sciences of the U.S.S.R., Moscow. The book has a one- 

 page summary and a table of contents in English. 



The five chapters discuss consecutively: the three main types of embryo- 

 genesis (primary larval type, non-larval type, and secondary larval type); 

 the evolutionary relationships between these types; the relationships between 

 the type of embryogenesis and morphogenesis; periodisation of embryo- 

 genesis; and changes in type of embryogenesis as related to progressive 

 evolution. There is an appendix on the ecological method as applied to 

 embryology. 



The book is illustrated mainly with line drawings. The bibliography covers 1 

 20 pages in small print; about one third of the titles are Russian. 



38 DEVELOPMENT OF RECEPTOR STRUCTURES 



IN THE INNER EAR OF VERTEBRATES 

 1968 

 By A. K. Titova Publishing House "Nauka" 



192 pp., 73 figs. Leningrad 



This book is written in Russian and is announced only briefly. The book 

 is in two parts. Part one deals with the structure of the adult inner ear, 

 and with the ultrastructure and histochemistry of the vestibular sensory 

 epithelium. Part two then deals more or less systematically with the embryonic 

 development of the inner ear (morphology, ultrastructure, and histochemistry) 

 in the major vertebrate orders. 



All illustrations are photomicrographs and electron micrographs of reason- 

 able quality. The bibliography covers 15 pages; about one quarter of the 

 titles are Russian. 



328 



