RECENT INVENTIONS. Improved Bag Holder. Shield for Shirt Studs. Improved Harrow. Improvement in Trays. Improved Pipe Wrench. Protector Attachment for Electrical Conductors. Combined Heater and Oven. New Emery Wheel. Reflector for Lamps. Calf Weaner. Hints on Sleep. Iron and Steel Magnetized by Breaking., scientific american, 1883-06-16
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