Carborundum Co. One case will 'Electric Furnace Products.' Edward & Acheson exhibit 'Lumps of Graphite, Silicium, Carborundum' (2 jars) one grey fine with large crystals with blue-grey metallic lustre. One case of manufactured abraders. One pyramid case with five lumps of Carborundum as it comes from the furnace. The three are worth securing. Norton Emery Wheel Co. Alumina = artificial Corundum. A grey fine exhibit of the crystals as they come from the furnace (electric) at Niagara Falls. Also Corundum is shown in this case. This pyramid exhibit is in a case 10 ft high, 7ft wide and 3 feet deep. Glass all around. The entire case should be secured.