sses, Stop-Blocks, Frieze Pieces, etc.
Architect's Specification, Tables of Tin-Roofing, Galvanized Iron,
etc., etc. To which is added the Exemplar of Architectural
Sheet-Metal Work, containing details of the Centennial Buildings,
and other important Sheet-Metal Work, Designs and Prices of
Architectural Ornaments, as manufactured for the Trade by the
Kittredge Cornice and Ornament Company, and a Catalogue of
Cornices, Window-Caps, Mouldings, etc., as manufactured by the
Kittredge Cornice and Ornament Company. The whole supplemented by a
full Index and Table of Contents. By A.O. KITTREDGE. 8vo., 565
pages.

$LANDRIN.--A Treatise on Steel$:

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 Expositio