Railway and Locomotive Engineering . apacity, the increase ofshops, machinery and tools for the repairof equipment, the extension of sidings, ad-ditional yard tracks, interlocking devices,automobile signals and heavier rail andballast. BOOKS, BULLETINS, TRACTION ANDTRANSMISSION ENGINEER- ING. By Samuel Sheldon and Published by D. Van Nos-trand Co., New York, 319 pages,fully illustrated, railway installation is fully de-scribed in this popular text-book, whichhas now reached a second edition. As anintroduction to the subject it is especiallyadapted for the


Railway and Locomotive Engineering . apacity, the increase ofshops, machinery and tools for the repairof equipment, the extension of sidings, ad-ditional yard tracks, interlocking devices,automobile signals and heavier rail andballast. BOOKS, BULLETINS, TRACTION ANDTRANSMISSION ENGINEER- ING. By Samuel Sheldon and Published by D. Van Nos-trand Co., New York, 319 pages,fully illustrated, railway installation is fully de-scribed in this popular text-book, whichhas now reached a second edition. As anintroduction to the subject it is especiallyadapted for the use of students or youngengineers. The subject is completelytreated from the details of the motors andcars to the larger installation in the powerhouse. The illustrations are supplementedby diagrams and charts. The style ismarked by a degree of clearness thatleaves nothing to guesswork. The paper,presswork and binding are of the usualexcellence of the enterprising publishers. 60 RAILWAY AND LOCOMOTIVE ENGINEERING Cetr mi. E^iv^iive. W iF e w i n g stype Re-placer rerail-ments are quicklyeffected and delaysrelieved. Strong enoughto carry the heavi-est locomotive, yetlight enough to behandled by oneman. Gradual andeasy climb ofwheels on to re-placer is in markedcontrast to the ab-rupt ascent ofother types ofcamel back irogt. The Q & C Co. 90 West St. New York Chicago St. Louis PROCEEDINGS OF THE AMER-ICAN SOCIETY OF TESTINGMATERIALS. Published by the So-ciety. Two volumes, 160 pages, cloth. Tliese volumes contain the complete re-ports of the numerous tests made by theSociety during 1920, embracing such sub-jects as Corrosion of Iron and Steel,Cement, Reinforced Concrete, Con-crete and Concrete Aggregate, Coatingsfor Structural Material, and Analysis ofCoal. Standards of metals are also in-cluded. Special technical papers submittedto the Society form the bulk of the secondvolume, and all are of more than usualinterest. February, 1921 Accident Bulletin No. 76 Flash and Fire Tests.


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