REVIEWS 
INDUSTRIAL CHEMISTRY.* 
T HIS "book, although based upon Payen’s Precis de Chimie Industrielle , 
has been so extensively modified and so considerably enlarged as almost 
to assume the form of a new work. The information contained in it has 
generally, although not always, been brought well up to date, and the 
various manufacturing processes are described with much clearness, and 
often with considerable detail. 
The article on Sulphur includes a description of the means employed for 
the recovery of that body from alkali wastes by Mond’s process ; and that on 
the manufacture of sulphuric acid contains much valuable matter relative to 
this most important branch of our chemical industries. It is, however, to be 
regretted that the woodcut representing a series of sulphuric-acid chambers 
is somewhat antiquated, having been reproduced from a plate contained in a 
French edition of the original work, published nearly twenty years ago. We 
likewise fail to find a drawing of the ordinary pyrites kiln, now so generally 
in use in this country. 
The production of chlorine by Weldon’s process is duly described, as is 
also the preparation of bleaching powder in chambers ; and in describing the 
manufacture of soda-ash, mention is made of the ammonia process, which is 
now being successfully carried out in this country, and which has recently 
taken a very extensive development on the Continent of Europe. 
There are likewise valuable articles on the preservation of wood, on paper- 
making, soap-making, starch and sugar-making, as well as upon brewing and 
distillation. 
The Metallurgical articles have been contributed by Dr. Paul, and are, so 
far as they are capable of being condensed within the limits assigned to them, 
generally satisfactory. Lead-smelting in the open hearth, in the reverberatory 
furnace, and in the blast furnace, is somewhat fully described ; but at page 
374, the Zeppenfeld furnace is spoken of as being still in use at Pontgibaud, 
whereas it has not been in operation there since 1852, and was taken down 
and removed early in the following year. 
* “ Industrial Chemistry : Based upon a Translation of Stohmann and 
Engler’s German Edition of Payen’s ‘ Precis de Chimie Industrielle,’ ” edited 
throughout and supplemented with chapters on the Chemistry of the 
Metals, &c., by B. IT. Paul, Ph.D. 8vo. London, Longmans. 1878. 
