AN IMPROVED METALLIC RAILWAY TIE. MeELFATRICIVS METALLIC RAILWAY TIE. Contagiousness of Consumption. AN ELECTRIC LIGHT LANTERN. Success of the New Orleans Jetties. Company and is in the condition required by the AN ELECTRICALLY REGULATED TIME SYSTEM. of the best class. A SWITCH OPERATING DEVICE. BARTELMES' SWITCH OPERATING DEVICE., scientific american, 1893-06-17
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