Theoretically and Practically Considered. By Dr. Hermann Wedding, Professor of the Metallurgy of Iron at the Royal Mining Academy, Berlin. Translated by Julius Du Mont, Bethlehem, Pa. Illustrated by 207 Engravings on Wood, and three Plates. In one volume, 8vo. (In press.)
WILL.—Tables for Qualitative Chemical Analysis.
By Professor Heinrich Will, of Giessen, Germany. Seventh edition. Translated by Charles F. Himes, Ph. D., Professor of Natural Science, Dickinson College, Carlisle, Pa. $1.50
WILLIAMS.—On Heat and Steam:
Embracing New Views of Vaporization, Condensation, and Explosions. By Charles Wye Williams, A. I. C. E. Illustrated. 8vo. $3.50
WOHLER.—A Hand-Book of Mineral Analysis.
By F. Wohler, Professor of Chemistry in the University of Göttingen. Edited by Henry B. Nason, Professor of Chemistry in the Rensselaer Polytechnic Institute, Troy, New York. Illustrated.
In one volume, 12mo. $3.00
WORSSAM.—On Mechanical Saws:
From the Transactions of the Society of Engineers, 1869. By S. W. Worssam, Jr. Illustrated by 18 large plates. 8vo. $5.00