In Alchymy it is also of use, which doth not belong to this place. Upon the remaining salt which did not sublime you may pour rain water, and dissolve it there in the glass body, (if it be whole still) else if it be broken, you may take out the salt dry, and dissolve and filtre and coagulate it again, and there will be separated a great deal of fæces. This purified salt, which will look yellowish, melt in a covered crucible, and it will turn quite blood red, and as hot as fire upon the tongue, which with fresh water you must dissolve again, and then filtre and coagulate; by which operation it will be made pure and clear, and the solution is quite green before it be coagulated, and as fiery as the red salt was before its dissolution. This grass green solution being coagulated again into a red fiery salt, may be melted again in a clean and strong crucible, and it will be much more red and fiery. N. B. And it is to be admired that in the melting of it many fire sparks do fly from it, which do not kindle or take fire, as other sparks of coals or wood use to do. This well purified red salt being laid in a cold and moist place, will dissolve into a blood red oyl, which in digestion dissolveth gold and leaveth the silver: this solution may be coagulated, and kept for use in Alchimy. There may also a pretious Tincture be extracted out of it with alcolized spirit of wine, which Tincture guildeth silver, but not firmly. And as for use in Physick, it ought to be kept as a great Treasure. But if the red fiery salt be extracted with spirit of wine before gold be dissolved therewith, it will yield likewise a fair red Tincture, but not so effectual in Physick as that unto which gold is joyned. And this Tincture can also further be used in Alchymy, which belongeth not hither, because we only speak of medicaments. _Of the use of the Medicine or Tincture made of Gunpowder._ This Tincture whether with or without gold, made out of the red salt, is one of the chiefest that I know to make, if you go but rightly to work, and prepare it well; for it purifieth and cleanseth the blood mightily, and provoketh also powerfully sweat and urine; so that it may safely and with great benefit be used in the Plague, Feavers, Epilepsy, Scurvy, in _Melancholia Hypochondriaca_, in the Gout, Stone, and the several kinds of them; as also in all obstructions of the Spleen and Liver, and in all diseases of the Lungs, and it is to be admire that of such a hurtful thing such a good medicine can be prepared. Therefore it would be much better to prepare good medicaments of it, to restore the poor diseased to health therewith, than to destroy with it those that are whole and sound.