=ELECTRICITY IN FACTORIES AND WORKSHOPS:  ITS COST AND CONVENIENCE.= A Handbook for Power Producers and Power Users.  By A. P. HASLAM, M.I.E.E. 328 pages, with numerous illustrations.  Large crown, 8vo, cloth Net =7/6=

=ELECTRO-METALLURGY.= A Practical Treatise.  By ALEXANDER WATT.  Tenth Edition, enlarged and revised.  Including the most Recent Processes.  Crown 8vo, cloth =3/6=

=ELECTRO-PLATING.= A Practical Handbook on the Deposition of Copper, Silver, Nickel, Gold, Aluminium, Brass, Platinum, &c., &c.  By J. W. URQUHART, C.E.  Fifth Edition, Revised.  Crown 8vo, cloth =5/0=

=ELECTRO-PLATING & ELECTRO-REFINING OF METALS= Being a new edition of ALEXANDER WATT’S “ELECTRO-DEPOSITION.”  Revised and Rewritten by A. PHILIP, B.Sc., Principal Assistant to the Admiralty Chemist.  Crown 8vo, cloth Net =12/6=

PART I. ELECTRO-PLATING—­PRELIMINARY CONSIDERATIONS—­PRIMARY AND
SECONDARY BATTERIES—­THERMOPILES—­DYNAMOS—­COST OF ELECTRICAL
INSTALLATIONS OF SMALL OUTPUT FOR ELECTRO-PLATING—­HISTORICAL REVIEW OF
ELECTRO DEPOSITION—­ELECTRO DEPOSITION OF COPPER—­DEPOSITION OF GOLD BY
SIMPLE IMMERSION—­ELECTRO DEPOSITION OF GOLD—­VARIOUS GILDING
OPERATIONS—­MERCURY GILDING—­ELECTRO DEPOSITION OF SILVER—­IMITATION
ANTIQUE SILVER—­ELECTRO DEPOSITION OF NICKEL, TIN, IRON AND ZINC,
VARIOUS METALS AND ALLOYS—­RECOVERY OF GOLD AND SILVER FROM
WASH SOLUTIONS—­MECHANICAL OPERATIONS CONNECTED WITH ELECTRO
DEPOSITION—­MATERIALS USED IN ELECTRO DEPOSITION.  PART II.  ELECTRO
METALLURGY—­ELECTRO METALLURGY OF COPPER—­COST OF ELECTROLYTIC COPPER
REFINING—­CURRENT DENSITY AS A FACTOR IN PROFITS—­SOME IMPORTANT DETAILS
IN ELECTROLYTIC COPPER REFINERIES—­ELECTROLYTIC GOLD AND SILVER BULLION
REFINING—­ELECTROLYTIC TREATMENT OF TIN—­ELECTROLYTIC REFINING OF
LEAD—­ELECTROLYTIC PRODUCTION OF ALUMINIUM AND ELECTROLYTIC REFINING OF
NICKEL—­ELECTRO GALVANISING.

     “Eminently a book for the practical worker in
     electro-deposition.”—­Engineer.

=ELECTRO-TYPING.= The Reproduction and Multiplication of Printing Surfaces and Works of Art by the Electro-Deposition of Metals.  By J. W. URQUHART, C.E.  Crown 8vo, cloth =5/0=

=ENGINEERING CHEMISTRY.= A Practical Treatise for the Use of Analytical Chemists, Engineers, Iron Masters, Iron Founders, Students and others.  Comprising Methods of Analysis and Valuation of the Principal Materials used in Engineering Work, with numerous Analyses, Examples and Suggestions.  By H. PHILLIPS.  Third Edition, Revised.  Crown 8vo, 420 pp., with Illustrations, cloth Net =10/6=

=EXPLOSIVES, MODERN, A HANDBOOK ON.= A Practical Treatise on the Manufacture and Use of Dynamite, Gun-Cotton, Nitro-Glycerine and other Explosive Compounds, including Collodion-Cotton.  With Chapters on Explosives in Practical Application.  By M. EISSLER, M.E.  Second Edition, Enlarged.  Crown 8vo, cloth =12/6=