REVIEWS. 
HENLEY’S RECIPES AND PROCESSES. 
A VALUABLE COLLECTION. 
To compile a book of recipes and processes so diversified and yet so 
detailed as to meet the practical requirements of the home and the 
workshop, is an ambitious undertaking. Yet the task has been accom- 
plished. By a careful selection of material, the editor. (Mr. Gardner 
D. Hiscox) of *Henley’s Twentieth Century Formule, Recipes, and 
Processes, succeeded in preparing a compendium of information which 
has proved of real value to a wide range of inquirers. 
After a lapse of nine years, a new edition has been issued, with the 
object of keeping pace with recent developments and of presenting the 
most modern methods. The manner of the presentation of the informa- 
tion, however, has undergone no alteration, nor was there any need for 
departure from it. Processes of questionable merit Mr. Hiscox claims 
to have discarded, while retaining, of course, recipes which have proven 
their value by long use. 
The large number and variety of subjects which are dealt with neces- 
sarily impose the strictest limitation of space. It is manifestly impos- 
sible to describe a complex scientific process in a few words,. and it is 
not intended that the material and data collected shall be regarded as an 
exhaustive treatise upon any subject. In many cases, however, the 
editor has given an interesting “ Bird’s-eye view” of a subject, and 
directions how to proceed in the thousand and one chemical processes 
that are given, although brief, are sufficiently clear and explicit as to be 
readily followed. Painstaking care also has evidently been given to the 
selection of the formule and recipes intended for the housewife, the 
home, and farm worker, and the mechanic. The long list that is given 
of some of the authorities who have been consulted in making the 
abstracts, and the numerous translations from foreign technological 
periodicals, indicate the industry and thought bestowed upon the pre- 
paration of the volume. 
In all, ten thousand formule, recipes, and processes are included in 
the 800 pages which the book contains. Commencing with a number of 
formule for acid proofing, Mr, Hiscox then devotes several pages to 
adhesives, which deal with glues, cements for all purposes, including 
leather and rubber. Formule for seemingly every kind of alloy form 
an important section, while recipes for beverages comprise another 
section. ‘Then, taking a few of the headings at random, come brass, 
brick, ceramics, cleaning preparations and methods, corn cures, cosmetics, 
* Our copy from Angus & Robertson Ltd., Sydney. Price 15s., post free 15s, 8d. * 
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