nuclear transplantation and hybrid androgenesis; and finally growth. Examples 

 are drawn both from the invertebrate phylum and the vertebrates. Even outside 

 the context of the present book this part in itself constitutes an admirable 

 introduction for students into the field of experimental embryology. 



The book contains a large number of good and well-selected illustrations. 

 It is concluded by an alphabetical index. 



17 HANDBOOK OF HUMAN EMBRYOLOGY 



3rd edit.. 1965 



by R. W. Haines and A. Mohiuddin E. & S. Livingstone 



239 pp., 249 figs. Edinburgh - London 



(paper-bound) Price: $ 7. — 



The first two editions of this concise handbook for medical students were 

 produced at the Medical College of Baghdad (1961 and 1962). The authors 

 are now at the College of Medicine, University of Lagos. The present edition 

 was revised and partly rewritten, and the illustrations were entirely redrawn. 

 The book is meant for use in a 40-hour course, including a careful study of 

 serial sections of the 7 mm. pig embryo. 



Most of the material included in the book is based on standard texts, but 

 in a few instances unorthodox views are expressed. The book is handy in size 

 and relatively cheap, and should find a market particularly in those countries 

 where students cannot afford to buy more expensive textbooks. 



The treatment of the subject matter is partly "systematic" and partly 

 "regional". The principal developmental abnormalities and some important 

 developmental interactions are briefly mentioned. Part I covers development 

 up to the 7 mm. stage in 8 chapters. Chapter 9 describes sections of the 7 mm. 

 pig embryo at many different levels. Part II covers the rest of development 

 until birth (organogenesis, 13 chapters). All chapters are subdivided into brief 

 sections with separate subheadings, each referring to one or more figures. 



The very brief treatment of primary induction and cellular interaction is 

 unsatisfactory, and, moreover, illogically placed. If the student is to acquire 

 at least a basic idea of this subject, it should be expanded into a separate 

 concluding chapter, with better figures. 



The numerous line drawings are all original; they are sometimes highly 

 schematized, but on the whole satisfactory, and well-labeled. There are no 

 literature references except those substantiating some unorthodox or less known 

 views. The book is concluded by a subject index. 



18 PRINCIPLES OF DEVELOPMENT 



1967 

 by N. S. Kerr Wm. C. Brown Co. 



"Concepts of Biology Series" Dubuque, Iowa 



115 pp., 55 figs. 

 ( paper-bound ) 



This book belongs to one of the ever-increasing number of series of small 

 paper-backs written for beginning students. It is not markedly different from 

 several others published recently. 



Relatively much attention is given to unicellular organisms and plants; this 

 serves to show the all-inclusive nature of the problems of development. Some- 

 what special features are a brief chapter on cell structure, replication and 

 growth, and a short chapter on the control of reproductive processes. The latter 

 includes sections on plant and animal photo-periodism, lunar cycles, and cir- 

 cadian rhythms. The other chapters deal with the morphology of development, 

 the control of developmental processes, and finally the environmental and 

 molecular control of differentiation. 



279 



