"Constitutes a systematic and careful account of our present knowledge of the origin and occurrence of the iron ores of Great Britain, and embraces a description of the means employed in reaching and working these ores."—Iron.
"Mr. Kendall is a great authority on this subject and writes from personal observation."—Colliery Guardian.
"Mr. Kendall's book is thoroughly well done. In it there are the outlines of the history of ore mining in every centre and there is everything that we want to know as to the character of the ores of each district, their commercial value and the cost of working them."—Iron and Steel Trades Journal.
ELECTRICITY, ELECTRICAL ENGINEERING, etc.
Electrical Engineering.
THE ELECTRICAL ENGINEER'S POCKET-BOOK OF MODERN RULES, FORMULÆ, TABLES, AND DATA. By H. R. Kempe, M.Inst.E.E., A.M.Inst.C.E., Technical Officer, Postal Telegraphs, Author of "A Handbook of Electrical Testing," &c. Second Edition, thoroughly Revised, with Additions. With numerous Illustrations. Royal 32mo, oblong, 5s. leather.