will not in haste be prov’d; as I might here manifest, but that I may by and by have a fitter opportunity to take notice of it. And thus much at present may suffice to have Discours’d against the Supposition, that almost every Quality must have some δεκτικον πρωτον, as they speak, some Native receptacle, wherein as in its proper Subject of inhesion it peculiarly resides, and on whose account that quality belongs to the other Bodies, Wherein it is to be met with. Now this Fundamental supposition being once Destroy’d, whatsoever is built upon it, must fall to ruine of it self.
But I consider further, that Chymists are (for ought I have found) far from being able to explicate by any of the Tria Prima, those qualities which they pretend to belong primarily unto it, and in mixt Bodies to Deduce from it. Tis true indeed, that such qualities are not explicable by the four Elements; but it will not therefore follow, that they are so by the three hermetical Principles; and this is it that seems to have deceiv’d the Chymists, and is indeed a very common mistake amongst most Disputants, who argue as if there could be but two Opinions concerning the Difficulty about which they contend; and consequently they inferr, that if their Adversaries Opinion be Erroneous, Their’s must needs be the Truth; whereas many questions, and especially in matters Physiological, may admit of so many Differing Hypotheses, that ’twill be very inconsiderate and fallacious to conclude (except where the Opinions are precisely Contradictory) the Truth of one from the falsity of another. And in our particular case ’tis no way necessary, that the Properties of mixt Bodies must be explicable either by the Hermetical, or the Aristotelian Hypothesis, there being divers other and more plausible wayes of explaining them, and especially that, which deduces qualities from the motion, figure, and contrivance of the small parts of Bodies; as I think might be shewn, if the attempt were as seasonable, as I fear it would be Tedious.
I will allow then, that the Chymists do not causelessly accuse the Doctrine of the four elements of incompetency to explain the Properties