This second edition shows improvements in comparison with the already 

 very valuable first edition. It is therefore a pity that the photographs are repro- 

 duced so unsatisfactorily. On this account we should like to recommend that 

 the ne.xt edition again be printed on better paper (which would however make 

 the book more expensive) or that another technique be used. 



The new chapter on comparative embryology of the vertebrates, in which 

 several developmental steps are given of the development of the frog, chick, 

 pig and man, in the form of drawings of sections, is very well prepared. The 

 distribution of the figures on the successive pages cannot however be con- 

 sidered a great success. It would have been clearer and easier to arrange the 

 figures simply according to the successive stages, since it is essentially the cross 

 references at the beginning and the end of the description of each figure which 

 form the actual key for comparison. 



P. D. NIEUWKOOP 



"GRUNDRISZ DER ALLGEMEINEN ZOOLOGIE" 

 ll»h edition, 1955 



by A. Kuhn Georg Thieme Verlag, Stuttgart 



281 pp. with 223 figs Price: 16,50 D.M. 



This concise textbook of Zoology for premedical students will form a guide 

 into the enormous variety of forms and functions in the animal kingdom, and 

 will show the general principles upon which its structure and function are 

 based. The tenth edition has been changed and extended in many respects; 

 the eleventh edition however shows only some corrections and small additions. 



The book begins with an extensive introduction into the various phyla, clas- 

 ses and orders of the Invertebrates and Vertebrates. In the various groups of 

 Invertebrates special attention has been paid to the parasitic forms, with their 

 pathological significance. An extensive chapter has been devoted to general 

 physiology in relation to morphological structure, after which the general devel- 

 opment of the organisms has been described, with special emphasis upon the 

 genetical aspects. Finally, some data on ecology and phylogeny have been 

 briefly given. 



The concise, but comprehensive treatment of the various chapters and the 

 very instructive form of the illustrations allow this textbook completely to ful- 

 fill its purposes. We should like to recommend it warmly not only to premedical 

 students — the text might be too extensive for the premedical teaching in many 

 countries — but also to elementary students in biology. The list of references 

 at the end of the book opens the way to more detailed studies of special 

 subjects. 



P. D. NIEUWKOOP 



"DEVELOPMENTAL ANATOMY" 

 6th edition, 1954 



by L. B. Arey W. B. Saunders Company 



680 pp. with 630 figs, some in colour Philadelphia & London 



Price: ? 



This sixth edition has become essentially a new book, since it has been 

 replanned, revised and for the greater part rewritten. The text has been written 

 in large and small type, the large type representing the basic information and 



