Earth prevails, tend towards the Centre of heavy Bodies. And since many things make it Evident, that in divers Mixt Bodies the Elementary Qualities are as well Active, though not altogether so much so as in the Elements themselves, it seems not reasonable to deny the actual Existence of the Elements in those Bodies wherein they Operate.
To which I shall add this Convincing Argument, that Experience manifests, and Aristotle Confesses it, that the Miscibilia may be again separated from a mixt Body, as is Obvious in the Chymical Resolutions of Plants and Animalls, which could not be unless they did actually retain their formes in it: For since, according to Aristotle, and I think according to truth, there is but one common Mass of all things, which he has been pleas’d to call Materia Prima; And since tis not therefore the Matter but the Forme that Constitutes and Discriminates Things, to say that the Elements remain not in a Mixt Body, according to their Formes, but according to their Matter, is not to say that they remain there at all; Since although those Portions of Matter were Earth and water, &c. before they concurr’d, yet the resulting Body being once Constituted, may as well be said to be simple as any of the Elements, the Matter being confessedly of the same Nature in all Bodies, and the Elementary Formes being according to this Hypothesis perish’d and abolish’d.
And lastly, and if we will Consult Chymical Experiments, we shall find the Advantages of the Chymical Doctrine above the Peripatetick Title little less then Palpable. For in that Operation that Refiners call Quartation, which they employ to purifie Gold, although three parts of Silver be so exquisitely mingl’d by Fusion with a fourth Part of Gold (whence the Operation is Denominated) that the resulting Mass acquires severall new Qualities, by virtue of the Composition, and that there is scarce any sensible part of it that is not Compos’d of both the metalls; Yet if You cast this mixture into Aqua Fortis, the Silver will be dissolv’d in the Menstruum, and the Gold like a dark or black Powder will fall to the Bottom of