3. It has been observed, that Corpulent Persons in some Diseases, that seize on them, do fall away to wonder, not only in the Wast, but in the Arms, Legs, and Thighs; and the very Calves of the Legs have been observed so flaccid and loose, that one might wrap the skin about the bones. The reason whereof, according to the opinion deliver'd, may be easily rendred to be, A great Consumption of the Stock of Liquors, that in Health kept the Vessels turgid; Which Vessels I suppose to make up those Muscles. But when the Pores are obstructed, that the nourishment is hindred (which then also uses to be but sparingly administred) and sweats, either spontaneous, or forced, are large, there must needs be a great expence of those Liquors, the supply being but inconsiderable: which cannot but contract all these ducts of all sorts nearer together, and make them much less in themselves, meerly from Exhaustion: Or, if there should be no sweats, the internal Heat spends the spirits, and dries up the Liquors; the consequence whereof may reasonably be presumed to be this Flaccidity of parts, and great and sudden Change, made in them; not that there is need of any _Parenchyma_ to fill up these Muscles considering what hath been said. Mean while, I humbly conceive, that if it be in any part of a Muscle, their Ingenuity, that plead for it, will put them upon some experiments, to bring it to Ocular Demonstration, either in Living or Dead Muscle, any kind of flesh, raw, rosted, boyl'd, or in what they can best make it out. And when I shall be convinc'd of an Errour in what I have discoursed, I shall beg pardon for giving the Occasion of the trouble of that Experiment, which shall prove a {320} _Parenchyma_ in any Muscle; and think my time well spent in receiving a full satisfaction of the ungroundedness of my opinion; and readily submit to the Author, with a grateful acknowledgement of my Obligation to any one that shall rectifie me in my mistake, if it be one. * * * * * _Observables touching _Petrification_._