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Show A 1'hittn.im Saw. It has been noticed that platinum, when placed in an electrical curreut, is heated to a dull redness This fact ia the basis of the invention of an electrical electri-cal saw which will cut quickly and neatly the hardest wood. The device is made of steel wire, upoi which is deposited metallic platinum. By connecting this modified wire witD the tonniuais of four Cnnsen batteries the platinum is heated to a bright redness, red-ness, and the saw ia ready for business. New York JouxnaL |