I shall then freely acknowledge to You (sayes _Carneades_) that I am not over well satisfi'd with the Doctrine that is ascribed to _Aristotle_, concerning Mistion, especially since it teaches that the four Elements may again be separated from the mixt Body; whereas if they continu'd not in it, it would not be so much a Separation as a Production. And I think the Ancient Philosophers that Preceded _Aristotle_, and Chymists who have since receiv'd the same Opinion, do speak of this matter more intelligibly, if not more probably, then the Peripateticks: but though they speak Congruously enough, to their believing, that there are a certain Number of Primogeneal Bodies, by whose Concourse all those we call Mixts are Generated, and which in the Destruction of mixt Bodies do barely part company, and recede from one another, just such as they were when they came together; yet I, who meet with very few Opinions that I can entirely Acquiesce in, must confess to You that I am inclin'd to differ not only from the _Aristotelians_, but from the old Philosophers and the Chymists, about the Nature of Mistion: And if You will give me leave, I shall Briefly propose to you my present Notion of it, provided you will look upon it, not so much as an Assertion as an _Hypothesis_; in talking of which I do not now pretend to propose and debate the whole Doctrine of Mistion, but to shew that 'tis not Improbable, that sometimes mingl'd substances may be so strictly united, that it doth not by the usuall Operations of the Fire, by which Chymists are wont to suppose themselves to have made the _Analyses_ of mixt Bodies, sufficiently appear, that in such Bodies the _Miscibilia_ that concurr'd to make them up do each of them retain its own peculiar Nature: and by the _Spagyrists_ Fires may be more easily extricated and Recover'd, than Alter'd, either by a Change of Texture in the Parts of the same Ingredient, or by an Association with some parts of another Ingredient more strict than was that of the parts of this or that _Miscibile_ among themselves. At these words _Eleu._ having press'd him to do what he propos'd, and promis'd to do what he desir'd;