f rust and its formation, and the
text is illustrated from about fifty photographs. An immense amount
of carefully arranged information follows as to the best methods of
applying anti-corrosive substances and the various pigments most
efficacious for use under all circumstances. The author has
evidently thoroughly investigated and mastered the subject of iron
corrosion, its cause and its prevention; and we regard his book as
of the greatest importance to bridge-builders and makers and users
of structural iron and steel. The book is illustrated throughout
and is admirably indexed and arranged."--_Iron and Steel Trades
Journal._

* * * * *

=THE MANUFACTURE OF ALUM AND THE SULPHATES AND OTHER SALTS OF ALUMINA
AND IRON.= Their Uses and Applications as Mordants in Dyeing and Calico
Printing, and their other Applications in the Arts, Manufactures,
Sanitary Engineering, Agriculture and Horticulture. Translated from the
French of LUCIEN GESCHWIND. 195 Illustrations. Nearly 400 pp. Royal 8vo.
1901. Price 12s. 6d.; India and Colonies, 13s. 6d.; Other Countries,
15s.; strictly net.

=Contents.=

Part I., =Theoretical Study of Aluminium, Iron, and Compounds of these
Metals.=--Chapters I., Aluminium and its Compounds.--II., Iron and Iron
Compounds.

Part II., =Manufacture of Aluminium Sulphates and Sulphates of
Iron.=--Chapters III., Manufacture of Aluminium Sulphate and the
Alums.--IV., Manufacture of Sulphates of Iron.

Part III., =Uses of the Sulphates of Aluminium and Iron.=--Chapters V.,
Uses of Aluminium Sulphate and Alums--Application to Wool and
Silk--Preparing and using Aluminium Acetates--Employment of Aluminium
Sulphate in Carbonising Wool--The Manufacture of Lake
Pigments--Manufacture of Prussian Blue--Hide and Leather Industry--Paper
Making--Hardening Plaster--Lime Washes--Preparation of Non-inflammable
Wood, etc.--Purification of Waste Waters.--VI., =Uses and Applications
of Ferrous Sulphate and Ferric Sulphates.=--Dyeing--Manufacture of
Pigments--Writing Inks--Purification of Lighting
Gas--Agriculture--Cotton Dyeing--Disinfectant--Purifying Waste
Liquors--Manufacture of Nordhausen Sulphuric Acid--Fertilising.

Part IV., =Chemical Characteristics of Iron and Aluminium.=--=Analysis
of Various Aluminous or Ferruginous Products.=--Chapter VII.,
Aluminium.--=Analysing Aluminium Products.=--Alunite Alumina--Sodium
Aluminate--Aluminiu