The Publishers and the Author will be grateful to any of the readers of this volume who will kindly call their attention to any errors of omission or of commission that they may find therein. It is intended to make our publications standard works of study and reference, and, to that end, the greatest accuracy is sought. It rarely happens that the early editions of works of any size are free from errors; but it is the endeavor of the Publishers to have them removed immediately upon being discovered, and it is therefore desired that the Author may be aided in his task of revision, from time to time, by the kindly criticism of his readers. JOHN WILEY & SONS 43 & 45 EAST NINETEENTH STREET. WORKS OF WILLIAM KENT PUBLISHED BY JOHN WILEY & SONS. The Mechanical Engineers' Pocket-Book. A Reference Book of Rules, Tables, Data, and Formulæ, for the Use of Engineers, Mechanics, and Students. xxxii+1100 pages, 16mo, morocco, $5.00. Steam-Boiler Economy. A Treatise on the Theory and Practice of Fuel Economy in the Operation of Steam-Boilers. xiv +458 pages, 136 figures, 8vo, cloth, $4.00. THE MECHANICAL ENGINEER'S POCKET-BOOK. A REFERENCE-BOOK OF RULES, TABLES, DATA, ENGINEERS, MECHANICS, AND STUDENTS. BY WILLIAM KENT, A.M., M.E., Consulting Engineer, Member Amer. Soc'y Mechl. Engrs. and Amer. Inst. Mining Engrs. SIXTH EDITION, REVISED AND ENLARGED. SIXTH THOUSAND. NEW YORK: JOHN WILEY & SONS. |