After the same manner as was taught with Antimony, there may also out of Arsenick and Auripigment together with salt and vitriol a thick oyl be distilled, which not only outwardly but also inwardly is safe to be used, and may be so corrected, that it shall be nothing at all inferior in vertue unto the _butyrum Antimonii_, but rather go beyond it: which perchance will seem impossible to many. But he that knows the nature and condition of minerals, will not be astonished at my words, but they will be to him as a light in a dark place. _To make a rare spirit of vitriol._ If common vitriol be dissolved in water, and you boyle granulated Zinck in it, all the metal and sulphur contained in the vitriol will precipitate on the Zinck, and the solution will turn white, the precipitated matter is nothing else, but iron, copper, and sulphur, which the salt of vitriol did contain, and now is drawn from it by the Zinck. The reason why the metal precipitateth out of the salt upon the Zinck, belongeth to the fourth part, where you will find it sufficiently explained; The white solution, from which the metallical matter is separated, must be coagulated to the dryness of salt, and so by it self a spirit distilled of it, which riseth easily, and is in taste and vertue not unlike unto common oyl of vitriol, but only that this is a little purer than the common. Here perchance many may object: you take the green from the vitriol, which _Paracelsus_ doth not teach, but bids us to keep it. To which I answer, that I do not teach here to make the sweet red oyl of vitriol, whereof _Paracelsus_ hath written, but the white acid oyl; which is as good, or rather much better than the common, which is made of the common impure vitriol. To what purpose is it, that you take green vitriol to distil, whereas the green doth not come over, and although that green should come over, why should that oyl be better than the white? for the green in the common vitriol is nothing else but copper and iron, which the salt water running through the passages of Metals did dissolve and take into it self, and as soon as such a green vitriol feeleth the fire, the green turneth into red, which is nothing else but a calcined iron or copper, which in the reducing by a strong fire and by melting is made manifest. _Paracelsus_ hath not taught us, that we should drive over the green by the force of the fire into a red and sweet oyl, but he hath shewed us an other way, which is found out by few men, whereof in the beginning of the second part already hath been made mention. This spirit or acid oyl distilled out of the purified vitriol, is of a pleasant sowreness, and serveth for all those uses, which above by the vitriol were described. And this process is set down onely for that end, that we may see, that when the vitriol is purifyed, that then it is easier distilled, and yieldeth a more pleasant spirit, than if it be yet crude and impure.