If you pour it upon calx of copper, made by often heating the Copper red hot and quenching it again, it will extract within an hours time a fair blew colour, and having dissolved as much thereof as it can pour it off and let it shoot in a cold place, and you will get a fair sky coloured vitriol, a small quantity whereof will cause strong vomits; the rest of the vitriol remaineth a blew oyl, good to be used in ulcers. _The Tincture of crude Tartar._ If you take common crude tartar, and pour of this spirit upon it, and set it in digestion, the spirit will extract a blood-red tincture, and if the spirit be abstracted from it, there will remain a pleasant red oyl, of no small vertue and power. _To make the oyls or liquors of salts._ This spirit also dissolveth crystals and other stones, they being first dissolved, precipitated and reduced to impalpable powders, turning them into oyles and liquors, good to be used in Alchymy and Physick. _To precipitate all metals with it._ Any metal being dissolved in an acid spirit may be precipitated better and purer therewith, than with the liquor of the salt of tartar; for _Aurum fulminans_ which is precipitated with it fulminateth far stronger than if it were done with oyl of tartar. R. Some juyce of Lemon and mix it with the solution of gold, before it be precipitated, and then not all the gold will precipitate, but some of it will remain in the solution, and in time many small green stones (not unlike unto common vitriol) will appear; which in a small dose will purge all noxious humors. _The oyl and vitriol of silver._ If you dissolve silver in _Aqua fortis_, and pour so much of this spirit into it till it ceaseth to make a noise, some of the silver will precipitate in the form of a black powder, the rest of the silver remaineth in the liquor: the phlegm abstracted from it in Balneo, till it get a skin at the top, and then set into a cool place, there will grow white crystals in it, which being taken out and dryed are a good purge in madness, dropsie, feavers and other diseases, safely and without danger to be used to young and old. The rest of the liquor which did not crystallise may be extracted with spirit of wine, and the fæces being cast away the extraction will be pleasanter. The spirit of wine abstracted from it, there will remain a medicine of no small value in all diseases of the brain. _To extract a red Tincture out of Antimony or common sulphur._ Boyl sulphur or Antimony made into powder in a Lixivium of salt of tartar, till it turn red, and pour this spirit upon it, and distill gently in a _Balneum_, and there will come over a fair tincture with the volatile spirit, silver anointed therewith will be guilt, though not lastingly. It serveth for all diseases of the lungs. _How to ripen Antimony and common sulphur, so that several sorts of such smels, as vegetables have, arise from thence._