DRYING MACHINERY AND PRACTICE. A Handbook 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. 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