NEW YORK SAT UR DAY AUGUST 5 1899. AVERAGE LIFE OF AN IRON OR STEEL BRIDGE. AUTOMOBILE MOTORS. To-day the motors which are most in evidence and give the best promise of permanence are the electric AN AMERICAN RAILWAY IN CHINA. on the coast immediately opposite the Philippine Is A COMMERCIAL NEED. FIRING HIGH EXPLOSIVES., scientific american, 1899-08-05
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