andbook on the Theory and Practice
of Drying and Desiccating, with Classified Description of Installations,
Machinery, and Apparatus, including also a Glossary of Technical Terms
and Bibliography. By THOMAS G. MARLOW, Grinding, Drying, and
Separating Machinery Specialist. Medium 8vo. About 250 pages, with 150
Illustrations [_In the Press, price about_] =12/6= _net._

=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.
URQUHA