CHAP. XIX.
Yet another way of extracting the Tincture from Gold.
Recipe of our dried Red Bloud of Sol, in the form of Powder irreducible one ounce, or an ounce an half of our Sulphureous fixed Sal-mirabile five, six or seven ounces. Both which mixt together put into a strong Crucible; which covered, set into a Wind-Furnace, giving Fire so, as they may flow together like Water for the space of half an hour afterward pour them out into some Iron Vessel, or Cone, when the Sal-mirabile hath drawn from the Tincture of Gold a Bloudy Colour. The Mixture cooled, separate the Red Scorias from the Regulus, which will be white as Lune. Pulverise the Red Scoria, or tinged Sal-mirabile, upon which pour common Water; this Water dissolves the Sal-mirabile, not indeed tinged with a Red, but greenish Colour. Filter the Solution, and evaporate the unprofitable Water in a Glass-dish. Then in the bottom will remain a Red Salt, which fortified with the Seal of Hermes or Luting of Sapience, keep for a sufficient time in a continual Fire of Coals: for then the Sulphur, as yet immature, will fix it self with the Sol, and become constant in Fire. From that Lute of Sapience, you may afterward (by the help of a proper Magnet) abstract a fixed Tincture, and convert the same to Medicinal use.
Note: That green Saline Water, in which the Redness is latent, coagulates Mercury into Sol, not indeed for wealthy profit, but onely by the benefit of that to know the possibility of such a Work. The Red slime, whence the Salt is extracted by the benefit of common Water, must be taken out of the Filter, mixed with new Sal-mirabile, and in a strong Crucible be made to flow well for half an hour. Then also more Tincture will be extracted, and a white Regulus of Sol again settle to the bottom. If this labour be a third time repeated, the Tincture will be good, and a white Regulus will again settle, yet not so much, as was the first and second time.