REVIEWS 63 



various characters by which they are defined. To this section no 

 less than 375 pages are devoted. 



The book is rendered more acceptable and instructive by the 

 liberal use of illustrations, there are no less than 252, which 

 are of extreme use as an aid to the technicalities described in the 

 text. 



" The Structure and Classification of Birds " is a most valuable 

 contribution to zoological knowledge, and its usefulness to naturalists 

 is extreme ; for the work is replete with original information, and 

 with extracts from contributions which were hitherto scattered far 

 and wide over serial and other literature, British and Foreign. We 

 have pleasure in highly commending the book. 



A CLASSIFICATION OF VERTEBRATA RECENT AND EXTINCT. By 

 Hans Gadow, M.A., Ph.D., F.R.S. Cambridge. (London : Adam 

 and Charles Black, 1898.) 



Dr. Gadow's " Classification of Vertebrates " is a useful handbook 

 for zoologists. It contains diagnoses of the characters upon which 

 the various Phyla, Sub-Phyla, Super Classes, Classes, Sub-Classes, 

 Divisions, Orders, Sub-Orders, and Families of the Vertebrata are 

 founded. It is needless to remark that the book is necessarily 

 highly technical, but it is at the same time a mine of condensed 

 information for the student and working naturalist. The work is 

 printed on one side of the paper only, so that additional characters, 

 the result of further investigations, and other notes, may be made 

 on the opposite page. The reputation of the author is a sufficient 

 guarantee for the excellence of the work, and for the accuracy of 

 the data afforded. 



WILD LIFE AT HOME : How TO STUDY AND PHOTOGRAPH IT. 

 By R. Kearton, F.Z.S. Freely illustrated by Photographs taken 

 direct from nature by C. Kearton. (London, etc. : Cassell and 

 Company, Limited, 1898.) 



Those who know Mr. Kearton's previous books, wherein are 

 given some delightful pictures of animal life, and more especially of 

 birds and their nests and eggs, will welcome yet another work of 

 a similarly attractive nature. 



In the little book under consideration, we have chapters 

 devoted to the apparatus required for photographing zoological 

 subjects, and general advice thereon. Other chapters treat the 

 methods of obtaining pictures of mammals, birds, insects, etc. 



Probably no one has had greater and more varied experience 

 than the Brothers Kearton, and hence anything these most success- 

 ful performers have to say on the subjects on which they treat bears 

 the impress of authority. 



The illustrations are about one hundred in number, and are 

 some of the best of the kind we have seen. 



