Rose.—Modern Steam Engines: An Elementary Treatise upon the Steam Engine, written in Plain Language, for Use in the Workshop, as well as in the Drawing Office, giving full Explanations of the Construction of Modern Steam Engines; Including Diagrams, showing their Actual Operation. Together with complete, but simple Explanations of the Operations of various kinds of Valves, Valve Motions, and Link Motions, etc., thereby enabling the Ordinary Engineer to clearly understand the Principles involved in their Construction and Use, and to Plot out their Movements upon the Drawing Board. By Joshua Rose, M.E., author of "The Complete Practical Machinist." "Pattern Makers' Assistant," "The Slide Valve," and "Mechanical Drawing Self-Taught." Illustrated by 422 engravings. In one vol. 4to, 320 pages, $6.00

Erni.—Mineralogy Simplified. Easy Methods of Identifying Minerals, including Ores, by means of the Blowpipe, by Flame Reactions, by the Spectroscope, and by Humid Chemical Analysis, based on Prof. Von Kobell's Tables for the Determination of Minerals, with an Introduction to Modern Chemistry. By Henri Erni, A.M., M.D., Late Professor of Chemistry, some time Chief Chemist of the U.S. Dept. of Agriculture. Second edition, revised and enlarged. Illustrated by 121 engravings. In one vol. 12mo., cloth, 396 pp., $3.00

Brannt.—A Practical Treatise on the Raw Materials and the Distillation and Rectification of Alcohol, and the Preparation of Alcoholic Liquors, Liqueurs, Cordials, Bitters, etc. Edited chiefly from the German of Dr. K. Stammer, Dr. F. Elsner, and E. Schubert. By Wm. T. Brannt. Illustrated by 31 engravings. 12mo, $2.50

Davis.—A Practical Treatise on the Manufacture of Bricks, Tiles, Terra-Cotta, Drain Tiles, Sewer Pipe, Fire Clays, Fire Bricks, Roofing, Flooring, and Art Tiles, etc., etc. Including full detailed descriptions of the most modern Machines, Tools, Kilns, and Kiln Roofs used. Illustrated by 228 engravings and six plates. 8vo. 472 pages, $5.00

Dawidowsky-Brannt.—A Practical Treatise on the Raw Materials and Fabrication of Glue, Gelatine, Gelatine Veneers and Foils, Isinglass, Cements, Pastes, Mucilages, etc. Including a description of the most recent American processes. 35 engravings. 12mo, $2.50

Wahl.—Galvanoplastic Manipulations. A Practical Guide for the Gold and Silver Electroplater. Comprising the Electro Deposition of all Metals by means of the Battery and the Dynamo-Electric Machine, as well as the most approved processes of Deposition by simple immersion. Illustrated by 189 engravings. 656 pages. 8vo, $7.50

Andres.—A Practical Treatise on the Fabrication of Volatile and Fat Varnishes, Lacquers, Siccatives, and Sealing Waxes. Illustrated. 12mo, $2.50

Hoffer-Brannt.—A Practical Treatise on Caoutchouc and Gutta-Percha, comprising the properties of the Raw Materials, and the Manner of Mixing and Working them. Illustrated. 12mo, $2.50

Kerl.—The Assayer's Manual. An Abridged Treatise on the Docimastic Examination of Ores and Furnace and other Artificial Products. Illustrated by 65 engravings. 8vo, $3.00

Davis.—The Manufacture of Leather. Being a Description of all the Processes for the Tanning, Currying, and Finishing of Leather, with special reference to the best American Practice. Illustrated by 302 engravings. 8vo. 800 pages, $10.00