Scientific American, Volumul 70

361 Broadway acid adapted Address amperes apparatus architect armature automatic battery Bicycle boiler brake Building Edition candle power Car coupling carbon cells Chicago circular color Company Conn connected construction Contained in SCIENTIFIC copies cost cutter cylinder device drill dynamo electric electric motor elevation engine engravings feet fire floor plans frame furnace gear glass heat horse power ICE YACHT illustrated improvement inches invention inventor iron lamp Lathe lever light lock machine machinery manufacture mechanism ment metal mill motor MUNN MUNN & CO newsdealers operation paper patent PATENTS CAVEATS Philadelphia pipe plate postal order pounds pressure Price 10 cents Pump rail Railway Railway signal Railway switch SCIENTIFIC AMERICAN SUPPLEMENT screw Send for Catalogue Sewing machine shaft sliding Spanish language steam steel Street surface Telephone tion tool tube valve vessel volts wheel wire York zinc