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A FEW CHOICE TECHNICAL BOOKS.
RECENTLY PUBLISHED.
Crew.—A Practical Treatise on Petroleum. Comprising its Origin, Geology, Geographical Distribution, History, Chemistry, Mining, Technology, Uses and Transportation. Together with a description of Gas Wells, the application of Gas as Fuel, etc. By Benjamin J. Crew. With an Appendix on the Product and Exhaustion of the Oil Regions, and the Geology of Natural Gas in Pennsylvania and New York. By Charles A. Ashburner, M.S., Geologist in Charge Pennsylvania Survey, Philadelphia. Illustrated by 70 engravings. 8vo. 508 pages, $4.50
Richards.—Aluminium: Its History, Occurrence, Properties, Metallurgy and Applications, including its Alloys. By Joseph W. Richards, A.C., Chemist and Practical Metallurgist, Member of the Deutsche Chemische Gesellschaft. Illustrated by 16 engravings. 12mo. 346 pages, $2.50
Davis.—The Manufacture of Paper: Being a description of the various Processes for the Fabrication, Coloring, and Finishing of every kind of Paper, including the different Raw Materials, and the Methods for Determining their Values, the Tools, Machines, and Practical Details connected with an intelligent and profitable prosecution of the Art, with special reference to the best American practice. To which are added a History of Paper, Complete Lists of Paper-making Materials, List of American Patents for Machines, Tools, and Processes used in Treating the Raw Materials, and in Making, Coloring, and Finishing Paper. By Charles Thomas Davis. Illustrated by 180 engravings. One vol. 8vo., 608 pages, $6.00