Chymical secrets and rare experiments in physick & philosophy with figures collected and experimented / by the Honourable and learned Sir Kenelm Digby ...

To make the Salt of Antimony.

CAlcine {antimony} in a Glass Oven, or in a Re∣verberatory, until it be perfectly white, without any addition; then sprinkle it with Dew, and dry it in the Sun; sprinkle and dry it seven or eight times, then grind it to Powder: Take of this Powder three parts, and one of Powder of Charcoal; mix them together, and put them into a Crucible, which set in a Wind-furnace, and give fire by degrees, at last strong fire to make all melt well; then take out the Crucible, and knock it against the ground to make the Regulus

fall to the bottom; break the Crucible being cold, and separate the Salt, which you will find between the Regulus and the Scories. So soon as you perceive that the Matter is melted, you must be quick in making the Regulus, and take the Crucible out as soon as you can, for fear the Salt should evapo∣rate in the fire.