nt grades of mineral oil and of the
animal and vegetable non-drying oils are carefully described, and
the author justly insists that the peculiarities of the machinery
on which the lubricants are to be employed must be considered
almost before everything else.... The chapters on grease and
solidified oils, etc., are excellent."--_The Ironmonger._

* * * * *

SOAPS. A Practical Manual of the Manufacture of Domestic, Toilet and
other Soaps. By GEORGE H. HURST, F.C.S. Illustrated with Sixty-six
Engravings. 390 pp. 1898. Price 12s. 6d.; India and Colonies, 13s. 6d.;
Other Countries, 15s.; strictly net.

=Contents.=

Chapters I., Introductory.--II., Soap-maker's Alkalies.--III., Soap Fats
and Oils.--IV., Perfumes.--V., Water as a Soap Material.--VI., Soap
Machinery.--VII., Technology of Soap-making.--VIII., Glycerine in Soap
Lyes.--IX., Laying out a Soap Factory.--X., Soap Analysis.--Appendices.

=Press Opinions.=

"We think it is the most practical book on these subjects that has
come to us from England so far."--_American Soap Journal._

"Much useful information is conveyed in a convenient and
trustworthy manner which will appeal to practical
soap-makers."--_Chemical Trade Journal._

"Works that deal with manufacturing processes, and applied
chemistry in particular, are always welcome. Especially is this the
case when the material presented is so up-to-date as we find it
here."--_Bradford Observer._

"The best and most reliable methods of analysis are fully
discussed, and form a valuable source of reference to any works'
chemist.... Our verdict is a capitally produced book, and one that
is badly needed."--_Birmingham Post._

* * * * *

ANIMAL FATS AND OILS: Their Practical Production, Purification and Uses
for a great Variety of Purposes. Their Properties, Falsification and
Examination. A Handbook for Manufacturers of Oil and Fat Products, Soap
and Candle Makers, Agriculturists, Tanners, Margarine Manufacturers,
etc., etc. By LOUIS EDGAR ANDES. Sixty-two Illustrations. 240 pp. 1898.
Demy 8vo. Price 10s. 6d.; India and Colonies, 11s.; Other Countries,
12s.; strictly net.

=Contents.=

Introduction. Occurrence, Origin, Properties and Chemical Constitution
of Animal Fats Preparation of Animal Fats and Oils. Machinery.
Tallow-melting Plant. Extraction Plant. Pr