Sulphur Antiif to the solution remaining after the deposition of kermes, in the second of the two processes above given, sulphuric acid is added, the whole of the oxide and sulphuret remaining in the solution is deposited, constituting the golden sulphur. But the reactions are supposed to be somewhat more complex than as just stated. By a brief exposure to the air, it is supposed that a part of the potassium of the sulphuret of potassium in the solution is oxidized by the atmospheric oxygen, and converted into potassa, while the sulphur liberated combines with the undecomposed part of the sulphuret of potassium to form a more highly sulphurated compound, the excess of sulphur in which, on the addition of sulphuric acid, is deposited along with the oxide and sulphuret, so as to form a sulphurated oxysulphuret of antimony. if the solution used be that left after the precipitation of the kermes in the present U. S. process above given, or that of the French Codex, in which the alkaline carbonate is used, as more of the oxide is deposited with the kermes, less remains to be precipitated by the acid, and consequently less must be contained in the resulting golden sulphur.