410 Notices of Books. [July, 
would allow them to give — a fault that is also to be found in the 
German and French editions. 
It is with great regret that we feel called upon to be so severe 
upon a work which has appeared with so many well and favour- 
ably known names attached to it. Such a book — we mean a 
manual of technological chemistry in the fullest sense of the 
term — is much wanted, but it must consist of many volumes, 
and be written and edited by more than one man. A book on 
industrial chemistry in a single volume is of but little use to the 
manufacturer or the technological student. A popular account 
of the more striking improvements which have lately taken place 
in chemical manufactures, treated in a lively style, and a plainly 
written manual of chemistry applied to the arts, for the use of 
schoolboys who have already gained some knowledge of the 
science, are both loudly called for, but Drs. Paul and Barry’s 
compilation satisfies none of these requirements. It is also to 
be regretted that the beautiful copper plate engravings of the 
French and German editions have been replaced by small wood- 
cuts. 
Metals and their Chief Industrial Applications . By Charles 
R. Alder Wright, D.Sc., &c. London : Macmillan and 
Co. 1878. 
This book contains the substance, with several valuable additions, 
of the course of leCtures on this subject delivered by Dr. Wright, 
last year, at the Royal Institution. The author has the gift of 
conveying a large amount of practical information in a few words, 
without, however, falling into the sin of dryness. The leCtures 
are avowedly popular ; theory, therefore, receives comparatively 
little attention. The principles, however, upon which different 
ores are made to yield up their metals are clearly and succinctly 
explained. Dr. Wright has brought his information down to the 
very latest date, and the processes of Siemens, Bessemer, and 
other modern workers in the field of metallurgy are fully described. 
As an instance of the author’s conscientiousness in this respeCt 
it may be mentioned that Allen’s nickel process, described in the 
“Journal of the Society of Arts” of so late a date as last 
February, is to be found in its proper place. 
For a young student desirous of gaining a general insight into 
metallurgical processes there could hardly be a better manual. 
The book is well illustrated ; and although it seems ungracious 
to find fault where there is so much to praise, we must remind 
Dr. Wright that an Index is an essential part of such a work. 
