The residue from which the Tincture is extracted, must be boyled with lead, and precipitated and driven off as you do oares, and you will get the remaining gold, which went not into the spirit of wine; but it is very pale and turned like unto silver in colour, which if it be melted by Antimony, it recovereth its former colour without any considerable loss in the weight. How the melting in crucibles, and boyling of the remaining gold is to be done, shall be more punctually set down in the fourth part; I know several other fine processes, for to extract the colour easily out of gold; but because the gold must be first made fit for it by melting in a crucible, and that it is not pertinent to speak of that operation here in this second part, therefore it shall be reserved for the fourth, where you shall be informed at large, not onely how to prepare Gold, Antimony and other minerals, and make them fit for extraction, but also how to reduce them into a transparent, soluble and fire-proof Ruby (which are none of the meanest medicines) and as it was done here with the gold, so you may proceed likewise with other metals and minerals for to extract their colours. And therefore being needless to describe each metals tincture by it self, all the processes of them shall be disclosed in one, _viz._ in that of gold. The book would grow too big, if I should describe them severally, which I count needless to do. Let this suffice for this Second part, that we have taught, how to extract out of the gold its colour after a common way. Which indeed are good medicines, but for ought I know of no use in Alchymy. But he that seeketh to have a true Tincture out of gold, let him endeavour first to destroy the gold by the universal Mercury, and to turn the inside outward, and the outside inward, and proceed further according unto art, then the soul of gold will easily joyn it self with the spirit of wine, and come to be a good medicine, whereof more in my treatise _de auro potabili_ is handled. If one know the _Chalybs_ of _Sandivogius_, which is well to be had, he might with little labour quickly get a good medicine: but because we shew our selves still ungrateful children unto God, therefore it is no marvel, that he withdraweth his hand from us, and leaveth us in errors. _What further may be done with the liquor of pebles._ Many more profitable things, as well in Alchymy, as in medicine, may be compassed by the oyl of sand; as for example, to make fair painting colours out of metals, which abide in all elements: Also to frame all sorts of transparent hard stones out of crystal, which in beauty are like unto the natural, yea fairer sometimes; also how to make many fair Amauses or Enamels and the like profitable arts: but they belonging not to this second part, shall be reserved for the fourth, where all such shall be taught very punctually with all the circumstances thereunto relating.