144 SOME NEW BOOKS [AvGUST 
“OUTLINES.” 
Outlines of Zoology. By J. ArrHur TuHomson, M.A. Third Edition, 
Revised and Enlarged. S8vo. pp. 819, with 332 illustrations. Edinburgh 
& London: Young J. Pentland, 1899. Price 15s. 
Professor J. Arthur Thomson is to be heartily congratulated on the issue of 
the third edition of this well-known text-book. In the space of 819 pages the 
author touches upon almost every side of zoological science. As the title of the 
work explains it is simply “Outlines,” and although there is always a danger 
in treating of the multiplicity of subjects herein contained, we are forcibly 
impressed with the freshness and clearness with which they are presented. 
This is the only zoological text-book in the English language which aims at 
a complete review of zoological science, and the best evidence that such a work 
was wanted and is appreciated by teachers and students of zoology, is supplied 
by the issue of the present edition. 
The correlation of structure and function which is emphasised throughout 
the work is an admirable feature, as also the ‘“‘up-to-dateness ” which cannot 
fail to stimulate the student. 
Many new figures have been added and some corrected. While the revision 
of the illustrations was taking place it is a pity that some of those which have 
done duty for so long have not been eliminated, such for instance are Fig. 73 
representing the proglottis of a Cestode (“Constructed from Leuckart”) in 
which the nervous system is omitted, Fig. 83 of the reproductive organs of 
Lumbricus (after Hering) in which the ovaries are incorrectly figured, Fig. 150 
a “dissection of Helix pomatia (mamly after Leuckart”) in which the position 
of the heart is wrongly shown. It is questionable if figures 199 and 215 are 
worth the space they occupy, while Figs. 234 and 235, representing the urino- 
genital organs of the male and female frog, would undoubtedly have been more 
useful if of Rana temporaria rather than A. esculenta. 
In a fourth edition we should like to see the confused account of the renal 
and reproductive organs of the skate (pp. 496-497) re-written, and the terms 
Wolffian and Miillerian ducts omitted. 
A word must be said in praise of the tabular form of summaries of affinities, 
etc., in chapter xx., as indeed of those throughout the work, all of which are 
admirable. 
This delightfully written text-book has enjoyed an enviable reputation in 
the past, and the present edition can only enhance the same. ° 
WALTER E. COLLINGE. 
PRACTICAL ZOOLOGY. 
Leitfaden fiir das Zoologische Praktikum. By Dr. Witty KUKENTHAL, 
Professor in Jena. 8vo, pp. vi. + 284, with 172 text-figures. Jena: 
G. Fischer, 1898. Price, sewn 6 marks, bound 7 marks. 
This is intended as a guide for beginners, whether in a properly appointed 
laboratory or working independently. For the latter there are given many 
technical instructions, for the lack of which the elementary student so often 
finds himself at sea. The opening chapter is on apparatus and the way to use 
it, and contains many useful hints. Thus the author rightly insists on the 
necessity for drawing on a large scale—“ Don’t spare paper, but take a fresh 
page to each drawing.” Then follows a chapter on the elements of histology, 
in which, after an illustrated summary of the various tissues, it is shown how 
they may be demonstrated. The student is then led through nine phyla of the 
animal kingdom, beginning with Protozoa and ending with Vertebrata. Each 
of these is preceded by a systematic synopsis, enabling the student to ascertain 
