Strength and other Properties of Metals:

Reports of Experiments on the Strength and other Properties of Metals for Cannon. With a Description of the Machines for testing Metals, and of the Classification of Cannon in service. By Officers of the Ordnance Department U. S. Army. By authority of the Secretary of War. Illustrated by 25 large steel plates. In one volume, 4to. . $10.00

Sullivan

Protection to Native Industry.

By Sir Edward Sullivan, Baronet, author of "Ten Chapters on Social Reforms." In one volume, 8vo......$1.50

Tables Showing the Weight of Round, Square, and Flat Bar Iron, Steel, etc., By Measurement. Cloth......... 63

Taylor

Statistics of Coal:

Including Mineral Bituminous Substances employed in Arts and Manufactures; with their Geographical, Geological, and Commercial Distribution and Amount of Production and Consumption on the American Continent. With Incidental Statistics of the Iron Manufacture. By R. C. Taylor. Second edition, revised by S. S. Hal-DEMAN. Illustrated by five Maps and many wood engravings. 8vo., cloth............$10.00

Templeton

The Practical Examinator on Steam and the Steam-Engine:

With Instructive References relative thereto, arranged for the Use of Engineers, Students, and others. By Wm. Templeton, Engineer. 12mo......• .....$1.25

Thomas

The Modern Practice of Photography. By R. W. Thomas, F. C. S. 8vo., cloth......75

Thomson

Freight Charges Calculator. By Andrew Thomson, Freight Agent. 24rao. . . . $1.25

TURNING: Specimens of Fancy Turning Executed on the Hand or Foot Lathe:

With Geometric, Oval, and Eccentric Chucks, and Elliptical Cutting Frame. By an Amateur. Illustrated by 30 exquisite Photographs. 4to.............$3.00

Turner's (The) Companion:

Containing Instructions in Concentric, Elliptic, and Eccentric Turning: also various Plates of Chucks, Tools, and Instruments; and Directions for using the Eccentric Cutter, Drill, Vertical Cutter, and Circular Rest; with Patterns and Instructions for working them. A new edition in one volume, 12mo. .....$1.50

Urbin

BRULL. - A Practical Guide for Puddling Iron and Steel.

By Ed. Urbin, Engineer of Arts and Manufactures. A Prize Essay-read before the Association of Engineers, Graduate of the School of Mines, of Liege, Belgium, at the Meeting of 1865-6. To which is added

A COMPARISON OF THE RESISTING PROPERTIES OF IRON AND STEEL.

By A. Brull. Translated from the French by A. A. Fesquet, Chemist and Engineer. In one volume, 8vo.....$1.00

Vaile

Galvanized Iron Cornice-Worker's Manual:

Containing Instructions in Laying out the Different Mitres, and Making Patterns for all kinds of Plain and Circular Work. Also, Tables of Weights, Areas and Circumferences of Circles, and other Matter calculated to Benefit the Trade. By Charles A. Vaile, Superintendent "Richmond Cornice Works" Bichmond, Indiana. Illustrated by 21 Plates. In one volume, 4to......$5.00

Ville

The School of Chemical Manures:

Or, Elementary Principles in the Use of Fertilizing Agents. From the French of M. George Ville, by A. A. Fesquet, Chemist and Engineer. With Illustrations. In one volume, 12 mo. . . $1.25

VOGDES - The Architect's and Builder's Pocket Companion and Price Book:

Consisting of a Short but Comprehensive Epitome of Decimals, Duodecimals, Geometry and Mensuration; with Tables of U. S. Measures, Sizes, Weights, Strengths, etc., of Iron, Wood, Stone, and various other Materials, Quantities of Materials in Given Sizes, and Dimensions of Wood, Brick, and Stone; and a full and complete Bill of Prices for Carpenter's Work; also, Rules lor Computing and Valuing Brick and Brick Work, Stone Work, Painting, Plastering, etc. By Frank W. Vogdes, Architect. Illustrated. Full bound in pocket-book form...........$2.00

Bound in cloth..........1.50

Warn

The Sheet-Metal Worker's Instructor:

For Zinc, Sheet-Iron, Copper, and Tin-Plate Workers, etc. Containing a selection of Geometrical Problems; also, Practical and Simple . Rules for describing the various Patterns required in the different branches of the above Trades. By Reuben H. Warn, Practical Tin-plate Worker. To which is added an Appendix, containing Instructions for Boiler Making, Mensuration of Surfaces and Solids, Rules for Calculating the Weights of different Figures of Iron and Steel, Tables of the Weights of Iron, Steel, etc. Illustrated by 32 Plates and 37 Wood Engravings. 8vo....... . $3.00

Warner

New Theorems, Tables, and Diagrams for the Computation of Earth-Work: Designed for the use of Engineers in Preliminary and Final Estimates, of Students in Engineering, and of Contractors and other non-professional Computers. In Two Parts, with an Appendix. Part I. - A Practical Treatise; Part II. - A Theoretical Treatise; and the Appendix. Containing Notes to the Rules and Examples of Part I.; Explanations of the Construction of Scales, Tables, and Diagrams, and a Treatise upon Equivalent Square Bases and Equivalent Level Heights. The whole illustrated by numerous original Engravings, comprising Explanatory Cuts for Definitions and Problems, Stereometric Scales and Diagrams, and a Series of Lithographic Drawings from Models, showing all the Combinations of Solid Forms which occur in Railroad Excavations and Embankmerts. By John Warner, A. M., Mining and Mechanical Engineer. 8vo.......$5.00

Watson

A Manual of the Hand-Lathe:

Comprising Concise Directions for working Metals of all kinds, Ivory, Bone and Precious Woods; Dyeing, Coloring, and French Polishing; Inlaying by Veneers, and various methods practised to produce Elaborate work with Dispatch, and at Small Expense. By Egbert P. Watson, late of "The Scientific American," Author of "The Modern Practice of American Machinists and Engineers.,, Illustrated by 78 Engravings...........$1.50

Watson

The Modern Practice of American Machinists and Engineers:

Including the Construction, Application, and Use of Drills, Lathe Tools, Cutters for Boring Cylinders, and Hollow Work Generally, with the most Economical Speed for the same; the Results verified by Actual Practice at the Lathe, the Vice, and on the Floor. Together with Workshop Management, Economy of Manufacture, the Steam-Engine, Boilers, Gears, Belting, etc., etc. By Egbert P. Watson, late of the "Scientific American." Illustrated by 86 Engravings. In one volume, 12mo..........$2.50

Watson

The Theory and Practice of the Art of Weaving by Hand and Power:

With Calculations and Tables for the use of those connected with the Trade. By John Watson, Manufacturer and Practical Machine Maker. Illustrated by large Drawings of the best Power Looms. 8vo............$10.00

WEATHERLY - Treatise on the Art of Boiling Sugar, Crystallizing, Lozenge-making, Comfits, Gum Goods. 12mo............$2.00

Wedding

The Metallurgy of Iron;

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.

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

Wohlee

A Hand-Book of Mineral Analysis.

By F. Wohler, Professor of Chemistry in the University of Gottingen. 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