New Automatic Electric Weighing Scale. AN AUTOMATIC RAILROAD GATE. CLOSE'S RAILROAD GATE. PM'S TOOL HOLDER FOR ENGINE LATHES. Dead Sea Water as an Antiseptic. A New Fluid for Natural History and 'Microscope Work. -NW 4 I A PRACTICAL DURABLE METALLIC RAILWAY TIE. SAUNDERS' METALLIC RAILROAD TIE., scientific american, 1891-12-05
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