LANDRIN. - A Treatise on Steel:

Comprising its Theory, Metallurgy, Properties, Practical Working, and Use. By M.H.C. Landrin, Jr., Civil Engineer. Translated from the French, with Notes, by A.A. Fesquet, Chemist and Engineer. With an Appendix on the Bessemer and the Martin Processes for Manufacturing Steel, from the Report of Abram S. Hewitt

United States Commissioner to the Universal Exposition, Paris, 1867. 12mo. $3.00

LARDEN. - A School Course on Heat:

By W. Larden, M.A. 321 pp. 12mo. $2.00

LARDNER. - The Steam-Engine:

For the Use of Beginners. By Dr. Lardner. Illustrated. 12mo. $.75

LARKIN. - The Practical Brass and Iron Founder's Guide:

A Concise Treatise on Brass Founding, Moulding, the Metals and their Alloys, etc.; to which are added Recent Improvements in the Manufacture of Iron, Steel by the Bessemer Process, etc., etc. By James Larkin, late Conductor of the Brass Foundry Department in Reany, Neafie & Co.'s Penn Works, Philadelphia. Fifth edition, revised, with extensive additions. 12mo. $2.25

LEROUX. - A Practical Treatise on the Manufacture of Worsteds and Carded Yarns:

Comprising Practical Mechanics, with Rules and Calculations applied to Spinning; Sorting, Cleaning, and Scouring Wools; the English and French Methods of Combing, Drawing, and Spinning Worsteds, and Manufacturing Carded Yarns. Translated from the French of Charles Leroux, Mechanical Engineer and Superintendent of a Spinning Mill, by Horatio Paine, M.D., and A.A. Fesquet, Chemist and Engineer. Illustrated by twelve large Plates. To which is added an Appendix, containing Extracts from the Reports of the International Jury, and of the Artisans selected by the Committee appointed by the Council of the Society of Arts, London, on Woolen and Worsted Machinery and Fabrics, as exhibited in the Paris Universal Exposition, 1867. 8vo. $5.00

LEFFEL. - The Construction of Mill-Dams:

Comprising also the Building of Race and Reservoir Embankments and Head-Gates, the Measurement of Streams, Gauging of Water Supply, etc. By James Leffel & Co. Illustrated by 58 engravings. 8vo. $2.50

LESLIE. - Complete Cookery:

Directions for Cookery in its Various Branches. By Miss Leslie. Sixtieth thousand. Thoroughly revised, with the addition of New Receipts. In 12mo., cloth $1.50

LIEBER. - Assayer's Guide:

Or, Practical Directions to Assayers, Miners, and Smelters, for the Tests and Assays, by Heat and by Wet Processes, for the Ores of all the principal Metals, of Gold and Silver Coins and Alloys, and of Coal, etc. By Oscar M. Lieber. 12mo. $1.25

LOVE. - The Art of Dyeing, Cleaning, Scouring, and Finishing, on the Most Approved English and French Methods:

Being Practical Instructions in Dyeing Silks, Woolens, and Cottons, Feathers, Chips, Straw, etc. Scouring and Cleaning Bed and Window Curtains, Carpets, Rugs, etc. French and English Cleaning, any Color or Fabric of Silk, Satin, or Damask. By Thomas Love, a Working Dyer and Scourer. Second American Edition, to which are added General Instructions for the use of Aniline Colors. 8vo. 343 pages $5.00

LUKIN. - Amongst Machines:

Embracing Descriptions of the various Mechanical Appliances used in the Manufacture of Wood, Metal, and other Substances. 12mo. $1.75

LUKIN. - The Boy Engineers:

What They Did, and How They Did It. With 30 plates. 18mo. $1.75

LUKIN. - The Young Mechanic:

Practical Carpentry. Containing Directions for the Use of all kinds of Tools, and for Construction of Steam-Engines and Mechanical Models, including the Art of Turning in Wood and Metal. By John Lukin, Author of "The Lathe and Its Uses," etc. Illustrated. 12mo $1.75

MAIN and BROWN. - Questions on Subjects Connected with the Marine Steam-Engine:

And Examination Papers; with Hints for their Solution. By Thomas J. Main, Professor of Mathematics, Royal Naval College, and Thomas Brown, Chief Engineer, R.N. 12mo., cloth. $1.50

MAIN and BROWN. - The Indicator and Dynamometer:

With their Practical Applications to the Steam-Engine. By Thomas J. Main, M.A.F.R., Ass't S. Professor Royal Naval College, Portsmouth, and Thomas Brown, Assoc. Inst. C.E., Chief Engineer R.N., attached to the R.N. College. Illustrated. 8vo. $1.50

MAIN and BROWN. - The Marine Steam-Engine.

By Thomas J. Main, F.R. Ass't S. Mathematical Professor at the Royal Naval College, Portsmouth, and Thomas Brown, Assoc. Inst. C.E., Chief Engineer R.N. Attached to the Royal Naval College. With numerous illustrations. 8vo. $5.00

MARTIN. - Screw-Cutting Tables, for the Use of Mechanical Engineers:

Showing the Proper Arrangement of Wheels for Cutting the Threads of Screws of any Required Pitch; with a Table for Making the Universal Gas-Pipe Thread and Taps. By W.A. Martin, Engineer. 8vo. .50

MICHELL. - Mine Drainage:

Being a Complete and Practical Treatise on Direct-Acting Underground Steam Pumping Machinery. With a Description of a large number of the best known Engines, their General Utility and the Special Sphere of their Action, the Mode of their Application, and their Merits compared with other Pumping Machinery. By Stephen Michell. Illustrated by 137 engravings. 8vo., 277 pages. $6.00

MOLESWORTH. - Pocket-Book of Useful Formulæ and Memoranda for Civil and Mechanical Engineers.

By Guilford L. Molesworth, Member of the Institution of Civil Engineers, Chief Resident Engineer of the Ceylon Railway. Full-bound in Pocket-book form $1.00

MOORE. - The Universal Assistant and the Complete Mechanic:

Containing over one million Industrial Facts, Calculations, Receipts, Processes, Trades Secrets, Rules, Business Forms, Legal Items, Etc., in every occupation, from the Household to the Manufactory. By R. Moore. Illustrated by 500 Engravings. 12mo. $2.50

MORRIS. - Easy Rules for the Measurement of Earthworks:

By means of the Prismoidal Formula. Illustrated with Numerous Wood-Cuts, Problems, and Examples, and concluded by an Extensive Table for finding the Solidity in cubic yards from Mean Areas. The whole being adapted for convenient use by Engineers, Surveyors, Contractors, and others needing Correct Measurements of Earthwork. By Elwood Morris, C.E. 8vo. $1.50