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35* Analyfit of EX AMPLE OF THE ANALYSIS OF AN ORE. T HIS, we will fuppofe, we had found by previous experiments, to contain copper —lead—filver—iron—bifmuth and fulphur.— In order to feparate thefe different fubftances from each other, we may proceed in the fol lowing way : The ore is to be reduced to fine particles, and firft digefted and extradied with nitric acid, as long as it will take up any of the ore; the whole is then filtered, by which means, the SULPHUR remains on the filtre, which may be walhed, colledted, and dried between paper, in a heat not above that of boiling water, and its weight afcertaincd. If it