iation of the various organ systems. At the end of part one a brief chapter is 

 devoted to twinning and to the most common developmental anomalies. 



The book is profusely illustrated with photographs and drawings, whose 

 quality is on the whole reasonable to good. Many figures were redrawn by 

 the author; some of these are highly schematized and sometimes executed in 

 rather crude techniques; the labelling is not always very clear. The book is 

 well printed. It has a fairly extensive bibliography, as well as author and 

 subject indexes. 



12 ANIMAL MORPHOGENESIS 



1968 

 By J. W. Saunders Jr. The Macmillan Comp,, New York 



Current Concepts in Biology Series Collier-Macmillan Ltd., London 



118 pp., 67 figs., 2 tbs. 

 (paper-bound) 



In reviewing this new paperback it is perhaps useful to contrast it with 

 a companion volume in the same series that appeared two years earlier: 

 C. H. Waddington, "Principles of development and differentiation", 1966 

 (reviewed in Gen. Embryol. Inf. Serv., Suppl. 11, 1966, p. 13). Both books 

 are intended for beginning biology students, and both are elementary in 

 scope. The organization of the present book is more conventional, the style 

 perhaps less personal; it is much more a miniature text-book of embryology, 

 with much emphasis on morphology, but for this very reason it is more 

 suitable as a basis for further study of embryology proper. And it must be 

 said that as such it is exemplary, both as regards content and illustrations 

 (the quality of the latter being much higher than in the earlier book). The 

 treatment proceeds step by step, logically and clearly, and is at the same 

 time completely up to date. Particularly the last chapter, discussing the 

 genetic control of development and the epigenetic control of morphogenesis, 

 is admirable in its readability and its selection of examples. 



All line drawings are either original or redrawn; and all are beautifully 

 executed. Many photographs are also included. All figures have explanatory 

 legends. There is a good reading list and a detailed alphabetical index. 



13 LEHRBUCH DER VERGLEICHENDEN ENTWICKLUNGS- 

 GESCHICHTE DER TIERE 

 1969 

 By R. Slewing Verlag Paul Parey 



531 pp., 196 figs., 2 tbs. Hamburg - Berlin 



Price: DM 58.— 



Contents: I. Einleitung: II. Furchung; III. Keimblatterentwicklung; IV. Organdifferenzierung; 

 V. Entwicklung der Keimzellen; VI. Entwicklung der Korperform; Metamerie; VII. Umwegt* 

 in der Ontogenetischen Entwicklung 



This text-book of comparative animal embryology is the first in the German 

 language since the classical handbook by Korschelt and Heider (1936), not 

 counting the book by Starck (1955/65), which uses a quite different ap- 

 proach. The present book is on a more modest scale than that by Korschelt 

 and Heider, but is much more balanced in its treatment of invertebrates and 

 vertebrates together. The approach is strictly morphological, with much 

 emphasis on phylogenetic relationships. The book was primarily written for 

 the use of students of biology, medicine, and veterinary science, and the 

 author consequently has not aimed at anything approaching an exhaustive 

 treatment of this vast subject. 



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