Concerning those parts and chapters of your _Authors_ Works, which treat of Physick; before I begin to examine them, I beg leave of you in this present, to make some reflections first upon his Opinions concerning the Nature of Health and Diseases: As for _Health_, he is pleased to say,[1] That _it consists not in a just Temperature of the body, but in a sound and intire Life; for otherwise, a Temperature of body is as yet in a dead Carcass newly kill'd, where notwithstanding there is now death, but not life, not health_: Also he says,[2] _That no disease is in a dead carcass._ To which I answer, That, in my opinion, Life is in a dead Carcass, as well as in a living Animal, although not such a Life as that Creature had before it became a Carcass, and the Temperature of that Creature is altered with the alteration of its particular life; for the temperature of that particular life, which was before in the Animal, doth not remain in the Carcass, in such a manner as it was when it had the life of such or such an Animal; nevertheless, a dead Carcass hath life, and such a temperature of life, as is proper, and belonging to its own figure: for there are as many different lives, as there be different creatures, and each creature has its particular life and soul, as partaking of sensitive and rational Matter. And if a dead Carcass hath life, and such a temperature of motions as belong to its own life, then there is no question, but these motions may move sometimes irregularly in a dead Carcass as well, as in any other Creature; and since health and diseases are nothing else but the regularity or irregularity of sensitive corporeal Motions, a dead Carcass having Irregular motions, may be said as well to have diseases, as a living body, as they name it, although it is no proper or usual term for other Creatures, but onely for Animals. However, if there were no such thing as a disease (or term it what you will, I will call it Irregularity of sensitive motions) in a dead Carcass, How comes it that the infection of a disease proceeds often from dead Carcasses into living Animals? For, certainly, it is not meerly the odour or stink of a dead body, for then all stinking Carcasses would produce an Infection; wherefore this Infection must necessarily be inherent in the Carcass, and proceed from the Irregularity of its motions. Next I'le ask you, Whether a Consumption be a disease, or not? If it be, then a dead Carcass might be said to have a disease, as well as a living body; and the Ægyptians knew a soveraign remedy against this disease, which would keep a dead Carcass intire and undissolved many ages; but as I said above, a dead Carcass is not that which it was being a living Animal, wherefore their effects cannot be the same, having not the same causes. Next, your _Author_ is pleased to call, with _Hippocrates, Nature the onely Physicianess of Diseases._ I affirm it; and say moreover, that as