I know there may be a Distinction betwixt Matter _Immanent_, when the material Parts remain and retain their own Nature in the things materiated, as some of the Schoolmen speak, (in which sence Wood, Stones and Lime are the matter of a House,) and _Transient_, which in the materiated thing is so alter'd, as to receive a new Forme, without being capable of re-admitting again the Old. In which sence the Friends of this Distinction say, that _Chyle_ is the matter of Blood, and Blood that of a Humane Body, of all whose Parts 'tis presum'd to be the Aliment. I know also that it may be said, that of material Principles, some are _common_ to all mixt Bodies, as _Aristotles_ four Elements, or the Chymists _Tria Prima_; others _Peculiar_, which belong to this or that sort of Bodies; as Butter and a kind of whey may be said to be the Proper Principles of Cream: and I deny not, but that these Distinctions may in some Cases be of Use; but partly by what I have said already, and partly by what I am to say, You may easily enough guess in what sence I admit them, and discerne that in such a sence they will either illustrate some of my Opinions, or at least will not overthrow any of them. To prosecute then what I was saying before, I will add to this purpose, That since the Major part of Chymists Credit, what those they call Philosophers affirme of their Stone, I may represent to them, that though when Common Gold and Lead are mingled Together, the Lead may be sever'd almost un-alter'd from the Gold; yet if instead of Gold a _Tantillum_ of the Red _Elixir_ be mingled with the Saturn, their Union will be so indissoluble in the perfect Gold that will be produc'd by it, that there is no known, nor perhaps no possible way of separating the diffus'd _Elixir_ from the fixed Lead, but they both Constitute a most permanent Body, wherein the Saturne seems to have quite lost its Properties that made it be call'd Lead, and to have been rather transmuted by the _Elixir_, then barely associated to it. So that it seems not alwayes necessary, that the Bodies that are put together _per minima_, should each retain its own Nature; So as when the Mass it Self is dissipated by the Fire, to be more dispos'd to re-appear in its Pristine Forme, then in any new one, which by a stricter association of its Parts with those of some of the other Ingredients of the _Compositum_, then with one another, it may have acquired.