Marks on the Steam Engine.
Third Edition, Revised. Enlarged, and Interleaved. The Relative Proportions of the Steam Engine. By Wm. D. Marks. With numerous Illustrations. 12mo. Extra Cloth. $3.00.
“A work of inestimable value to every mechanic, containing as it does, rules, tables, and directions in regard to the steam engine which come into use in every‐day practical life of the engineer.”—San Francisco Wood and Iron.
Elements of Modern Chemistry.
(WURTZ.)
New Edition, Thoroughly Revised. Translated by W. H. Greene. 12mo. Cloth. $2.50. Sheep. $3.00.
“A valuable work as a class‐book, and a most interesting and instructive volume for the general reader.”—New York School Journal.
If not obtainable at your Booksellers’, send direct to the Publishers, who will forward the books, FREE OF POSTAGE, promptly on receipt of the price.