inion inclined to the floor will easily hold five or more rigid systems for this six persons, and can be made class of bridge; but the to accommodate ten. In the structure, although it has nuw largest an iron stove will be been replaced by a steel arch, placed. A pump will provide proved to be… … THE BRIDGES OF NIAGARA GORGE. feet ; width, 28 feet; width of roadway, 25 feet. The of the trusses. The bridge is proportioned for a live the Abyssinians ” is fully illustrated. ‘‘ The Commer- bridge carries a single electric track with a roadway on load on each of the tracks of two 128-ton…
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