. Concrete bridges and culverts, for both railroads and highways . Barrels Annual ll^lM 11 [<f,^l<jlsH Ogelsby near iVC^d Production. \^^jJf|Vl]ifw La Salle, 111. Highest QualityPortland Cement 1.■),()()() Barrels Used in CHICAGOS NEW CITY HALL AND COOK COUNTY COURT HOUSE Specified by the leading Architects,Engineers and Contractors for all workrequiring a. strictly high grade andabsolutely uniform Portland. WE MAKE ONE BRAND ONLY THE BEST THAT CAN BE MADE. CHICAGO PORTLAND CEMENT CO. 108 La Salle Street, CHICAGO, ILL. (Instructive Booklets on Request.) EUREKA MIXERS. A Portable Mixer of


. Concrete bridges and culverts, for both railroads and highways . Barrels Annual ll^lM 11 [<f,^l<jlsH Ogelsby near iVC^d Production. \^^jJf|Vl]ifw La Salle, 111. Highest QualityPortland Cement 1.■),()()() Barrels Used in CHICAGOS NEW CITY HALL AND COOK COUNTY COURT HOUSE Specified by the leading Architects,Engineers and Contractors for all workrequiring a. strictly high grade andabsolutely uniform Portland. WE MAKE ONE BRAND ONLY THE BEST THAT CAN BE MADE. CHICAGO PORTLAND CEMENT CO. 108 La Salle Street, CHICAGO, ILL. (Instructive Booklets on Request.) EUREKA MIXERS. A Portable Mixer of Good CapacityFor Particular Work. ASK FOR CATALOGUE C. EUREKA MACHINE CO. LANSING, MICH. DESCRIPTION OF The Longest Simple-Truss Bridge Span in Existence, II. G. TYRRELL, Civil E x g i x e e r .FOR SALE BY THE E X G I X E E R I N G X E W S XEW YORK CITY 24 Pages. 5 Illustrations. 6x9 inches. Paper , 50 Cents. What isEngineering-Contracting? Engineering-Contracting is a weekly journal for civilengineers and contractors, edited by Halbert P. Gillette, Soc. C. E. author of the Handbook of Cost Dataand other books for Engineers and Contractors. Engineer-ing-Contracting might be termed a serial sequel to thisHandbook, for no issue is printed that does not containvaluable cost data. This feature alone makes the paper onethat no civil engineer or contractor can afford to be Gillette has just completed his appraisal of all the rail-ways in the State of Washington, acting as Chief Engineerfor the Iiailroad Commission. Data of cost of all kind


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