To what may be deduc'd, in favour of this Assertion, from the Nature of the Thing it self, I will add something out of Experience, which though I have not known it used to such a purpose, seems to me more fairly to make out that there May be Elementary Bodies, then the more questionable Experiments of Peripateticks and Chymists prove that there Are such. I consider then that Gold will mix and be colliquated not only with Silver, Copper, Tin and Lead, but with Antimony, _Regulus Martis_ and many other Minerals, with which it will compose Bodies very differing both from Gold, and the other Ingredients of the resulting Concretes. And the same Gold will also by common _Aqua Regis_, and (I speak it knowingly) by divers other _Menstruums_ be reduc'd into a seeming Liquor, in so much that the Corpuscles of Gold will, with those of the _Menstruum_, pass through Cap-Paper, and with them also coagulate into a Crystalline Salt. And I have further try'd, that with a small quantity of a certain Saline Substance I prepar'd, I can easily enough sublime Gold into the form of red Crystalls of a considerable length; and many other wayes may Gold be disguis'd, and help to constitute Bodies of very differing Natures both from It and from one another, and neverthelesse be afterward reduc'd to the self-same Numerical, Yellow, Fixt, Ponderous and Malleable Gold it was before its commixture. Nor is it only the fixedst of Metals, but the most fugitive, that I may employ in favour of our Proposition: for Quicksilver will with divers Metals compose an _Amalgam_, with divers _Menstruums_ it seems to be turn'd into a Liquor, with _Aqua fortis_ will be brought into either a red or white Powder or precipitate, with Oyl of Vitriol into a pale Yellow one, with Sulphur it will compose a blood-red and volatile Cinaber, with some Saline Bodies it will ascend in form of a Salt which will be dissoluble in water; with _Regulus_ of Antimony and Silver I have seen it sublim'd into a kinde of Crystals, with another Mixture I reduc'd it into a malleable Body, into a hard and brittle Substance by another: And some there are who affirm, that by proper Additaments they can reduce Quicksilver into Oyl, nay into Glass, to mention no more. And yet out of all these exotick Compounds, we may recover the very same running Mercury that was the main Ingredient of them, and was so disguis'd in them. Now the Reason (proceeds _Carneades_) that I have represented these things concerning Gold and Quicksilver, is, That it may not appear absurd to conceive, that such little primary Masses or Clusters, as our Proposition mentions, may remain undissipated, notwithstanding their entring into the composition of various Concretions, since the Corpuscle of Gold and Mercury, though they be not primary Concretions of the most minute Particles or matter, but confessedly mixt Bodies, are able to concurre plentifully to the composition of several very differing Bodies,