ll be welcomed by those interested in this
industry who have not secured the full advantage of a course of
scientific training."--_Chemical Trade Journal._

"In concise and lucid terms almost every ingredient used in paint
and colour manufacture is described, together with the methods of
testing their intrinsic and chemical value."--_Pontefract Express._

"Such a book of reference for paint, colour and varnish
manufacturers has long been needed, and in Mr. Hurst the publishers
have secured a compiler who is not only a well-known authority and
expert, but who has the gift of communicating his knowledge in a
concise and lucid form."--_Manchester Courier._

* * * * *

=PURE AIR, OZONE AND WATER.= A Practical Treatise of their Utilisation
and Value in Oil, Grease, Soap, Paint, Glue and other Industries. By W.
B. COWELL. Twelve Illustrations. 1900. Price 5s.; India and Colonies,
5s. 6d.: Other Countries, 6s.; strictly net.

=Contents.=

Chapters I., Atmospheric Air; Lifting of Liquids: Suction Process;
Preparing Blown Oils; Preparing Siccative Drying Oils.--II., Compressed
Air; Whitewash.--III., Liquid Air; Retrocession.--IV., Purification of
Water; Water Hardness.--V., Fleshings and Bones.--VI., Ozonised Air in
the Bleaching and Deodorising of Fats, Glues, etc.: Bleaching Textile
Fibres.--Appendix: Air and Gases: Pressure of Air at Various
Temperatures; Fuel; Table of Combustibles; Saving of Fuel by Heating
Feed Water; Table of Solubilities of Scale Making Minerals: British
Thermal Units Tables; Volume of the Flow of Steam into the Atmosphere;
Temperature of Steam.--Index.

=Press Opinions.=

"This is a valuable work in little space.... In arrangement it is a
commendable work, and its value is increased by the index which
brings the little volume to a close."--_Newcastle Daily Journal._

"The book is written solely for manufacturers, who, without doubt,
will find it exceedingly practical and useful. The volume contains
an appendix wherein is given a great many tables, etc., which
manufacturers in the trades referred to will find of inestimable
value "_Blackburn Times._

=THE MANUFACTURE OF MINERAL AND LAKE PIGMENTS.= Containing Directions
for the Manufacture of all Artificial, Artists and Painters' Colours,
Enamel, Soot and Metallic Pigments. A Text-book for Manufacturers,
Merchants, Artists a