as plates at the end of the book; many of these are electron micrographs. 

 The bibliography covers 46 pages, nine of which are devoted to Russian 

 titles; many of these are recent. 



30 FINE STRUCTURE OF THE DEVELOPING 



AVIAN CORNEA 

 1969 

 By E. D. Hay and J. P. Revel S. Karger 



Monographs in Developmental Basel - New York 



Biology, vol. 1 Price: $ 7.70 



144 pp., 48 figs. 



This is the first volume of a new series of monographs in developmental 

 biology edited by A. Wolsky and P. S. Chen. The authors of this volume 

 have carried out extensive electron microscope studies on the role of extra- 

 cellular matrices in epithelial-mesenchymal interactions, first in regenerating 

 amphibian limbs and later in the chick cornea system. They are now presen- 

 ting a complete ultrastructural study of the development of this system. The 

 book will be of interest to embryologists, cytologists, and ophthalmologists 

 (to the latter especially because the major developmental events in the avian 

 and mammalian cornea appear to be very similar, at least when studied with 

 the light microscope). 



The book opens with a general outline of corneal development based 

 mainly on the older light microscope literature. Then follows a chapter on 

 the formation of the primary stroma and the role of the ectoderm, and a 

 chapter on the origin of the endothelium and the formation of the "Brille". 

 After a chapter discussing the later events up to hatching, the book is con- 

 cluded by a summary and concluding remarks. The descriptive parts are 

 based on the Hamburger-Hamilton series of stages. All chapters except the 

 last have their own introduction and brief summary. 



Points of wider interest discussed in the various chapters are: secretion 

 of connective tissue proteins by epithelia; the difference between vascular 

 mesenchyme and mesenchyme proper; the phylogeny of the dermis and cor- 

 neal stroma. The last chapter deals again with the developmental events, this 

 time not chronologically but for the three tissue components separately 

 (epithelium and primary stroma; endothelium; fibroblasts and definitive 

 stroma), and finally discusses epithelial-mesenchymal interactions as illustrated 

 in particular by the developing cornea. 



An appendix describes in detail the methods used in this study, and gives 

 illustrations of the external form of the most important relevant Hamburger- 

 Hamilton stages. 



The book is beautifully produced and profusely illustrated, mostly with 

 superb electron micrographs. It is concluded by a nine-page bibliography. 



31 THE NEURAL CREST 



Its properties and derivatives in the light of experimental research 



1969 

 By S. Horstadius Hafner Publishing Comp. 



1 1 1 pp., 46 fiqs. New York - London 



Price: $ 6.50 



This is a facsimile reprint of a monograph first published in 1950. The 

 original book is so well known that it is superfluous to review it here, 

 particularly since no changes or additions have been made. Suffice it to say 

 that the book has been reproduced with the utmost care. 



325 



