Although thou mayest suspect this not to be the simple tincture of _Sol_, but of Nitre and Tartar mixt, be sure that the quantity of Nitre added not to exceed; and suppose that tincture of Tartar and Nitre, I pray what waste is there? since that is so good a medicine by it self, & I am perswaded, this tincture of _sol_ to be better than those set down in the Second part. That Ruby may be so used by it self with proper vehicles, seeing it is a soveraign medicine of it self; or else exposed to the air and resolved to a liquor; for the medicine is no less than a tincture, because the Gold in it, and the purer part of Antimony are made potable without corrosives. Wonderful is the power of salts in metals to be destroyed, perfected and changed by fusion; for it happened to me one time making this Ruby, placeing two other crucibles also with metals, by this containing gold with the prepared _Regulus_ of Antimony (for easily two or three, or more crucibles may be placed in this furnace, to be ruled with one fire, which cannot be done in a common furnace by that means) about to put in a certain salt into the crucible next to the crucible of gold, that by a mistake I cast it into the crucible with gold only, whence so great a conflict arose, that there was danger of boyling over; therefore forced to remove it out of the furnace presently with tongs, and to effuse it, supposing that the Ruby was left by my rash putting in of salt; therefore I would only save the gold. And I found the effused mass red like blood, purer than a Ruby, but no Gold; but white grains like Lead dispersed here and there in the salts, by reason of their smalness, not separable but by the solution of the salts, which being separated by the solution of water from the red tincture like blood, remained in the bottom of the glass, which afterward for fusions sake I placed in a new crucible in that furnace, but willing to try the fusion, I found the crucible empty, and all the Gold vanished, a little excepted sticking on the top to the crucible and the cover, which I took away and melted for experience sake in a new close crucible, but all of it presently feeling heat flew away like Arsnick, no sign being left in the crucible; and so I was deprived of my Gold. At length I took the red solution, and abstracted the water from the salts, and I found the salt red like blood, which I put in a clean crucible in the furnace for to try whether any metallick body might thence be extracted; but I found the effused salt deprived of all tincture and redness, which seems strange to me even to this day, that by help of this salt the whole substance of gold, _viz._ the tincture together with the remainder flew away, having so great volatility.