This is a most ancient and profitable Art, whereby one metal may be separated from another: And it is for the most part done 4. ways, _viz._ by _Aqua Fortis_, by cement, by flux with sulphur, and lead, and lastly by Antimony; which ways that most witty _Lazarus Ercker_, hath clearly, and distinctly described, whose description is not to be found fault with, although some necessary things may be added thereunto, which being but few, I thought it superfluous to add them in this place. And that separation consists in three chief metals, Gold, Silver, and Copper; he made no mention of other metals, and two of the aforesaid four ways are in use, as very easie, for they are done with _Aqua Fortis_ and Cement, the two others most commonly neglected, which are done by benefit of melting with Sulphur and Lead; and also by Antimony: that which is admirable, because metals are easier separated by benefit of these two ways, than by _Aqua fortis_ and Cements, suspected of wast, whereas not Sulphur and Antimony, but the ignorant worker, not knowing the nature of Sulphur and Antimony, is rather to be blamed, because he knows not how to order them, and withall leaves the nearer way of separation: and I must needs confess it that without this furnace I would not separate with them, because with that common way of furnaces and bellows, the stink of Sulphur and Antimony hurtful to the Liver, Lungs, Brain, and Heart, is received by the Nostrils to the hazard of health: for which cause I do not wonder that those two wayes requiring greater diligence than those two former by _Aqua fortis_ and Cements are rejected. But this Furnace being known, with which without danger one may melt, I doubt not of excelling the two former ways hereafter as more profitable than them. For he who knows Antimony, may not only easily with small cost separate Gold from the addition without any loss of it, and speedily refine it, but also easier separate gilt silver, than by Sulphur, Lead, _&c._ in great store without any loss of Gold or Silver.