NOTICES OF NEW BOOKS. 279 
“Space will only allow us to draw further attention to two 
really zoological treatises (XIV. and XV.)—on Whales past and 
present—which it should be noted are to be found in this 
volume; to some well-known anthropological addresses; and to 
biographical sketches of Rolleston, Owen, Huxley, and Darwin. 
A Student's Text-Book of Zoology. By Apam Sepvewicr, M.A., 
F.R.S. Vol. I. Swan Sonnenschein & Co., Limited. 
THE appearance of this work is but little subsequent to the 
Text-Book of Parker and Haswell, recently noticed in these 
pages (ante, p. 132). Its aim is distinctly stated—“ to place before 
English students of Zoology a treatise in which the subject was 
dealt with on the lines followed with so much advantage by Claus 
and his predecessors in their works on Zoology.” This volume— 
the first—deals with the whole of the animal kingdom except the 
Arthropoda, the Echinodermata, and the Chordata, which will 
form the subject of the second volume. A third may probably be 
_ issued devoted generally to the facts and principles of Zoology. 
Books of this character can be reviewed in two ways: either 
criticised by a specialist for some weakness or novelty in his own 
particular study to which he may have devoted his life; or brought 
to the notice of the general zoologist or naturalist, as a compre- 
hensive whole, where the latest knowledge may be sought by the 
specialist on the general subject, and where the general student 
may expect to find special information on the concrete subject. 
The labour and anxiety to produce a modern text-book is now 
: necessarily enormous, and a feeling of great responsibility arises 
in writing a notice of a work which, if it fulfils its purpose, must 
prove a technical encyclopedia to zoologists who study only the 
histories of the mature life of animals, and who seek instruction 
in deeper biological principles. Our pages, we need hardly 
| remind the reader, are devoted to the former, but we all fre- 
quently need an authoritative guide to the latter. It is thus a 
mistake to altogether appreciate these works as students’ text- 
books; they cover a wider area, and are, in the true sense, works 
of reference. 
Prof. Sedgwick is an advocate of a preliminary knowledge of 
Zoology being acquired by the study of types, a method largely 
