ciples involved in this invention are ute, by which the metallic grains are left clean two or more refiners, who will take samples based on the following theory: Grains of gold, and bright, and almost entirely free from sand, from the barrels before making any offerfor it. silver, or other ductile… … mated, while the light and refuse earth is rap- flatten under the mill, and thus prevent the amined this apparatus in the Assay Office in supply the molten iron. The shell can, of idly. washed away. grinding surfaces from coming close enough to this city, and believe it is an excellent inven-…
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