example, Fire will cause Wood to move so as to take its figure, to wit, the figure of Fire, that is, to change its own figurative motions into the motions of Fire: and this latter kind of moving or working is found in digestion; for the regular digestive motions do turn all food received from its own nature or figure, into the nourishment, figure, or nature of the body, as into flesh, blood, bones, and the like. But when several parts of Matter meet or joyn with equal force and power, then their several natural motions are either quite altered, or partly mixt: As for example; some received things not agreeing with the natural constitution of the body, the corporeal motions of the received, and those of the receiver, do dispute or oppose each other: for the motions of the received, not willing to change their nature conformable to the desire of the digestive motions, do resist, and then a War begins, whereby the body suffers most; for it causes either a sickness in the stomack, or a pain in the head, or in the heart, or in the bowels, or the like: Nay, if the received food gets an absolute victory, it dissolves and alters oftentimes the whole body, it self remaining entire and unaltered, as is evident in those that die of surfeits. But most commonly these strifes and quarrels, if violent, do alter and dissolve each others forms or natures. And many times it is not the fault of the Received, but of the Receiver; as for example, when the digestive and transforming motions are either irregular, or weak; for they being too weak, or too few, the meat or food received is digested onely by halves; and being irregular, it causes that which we call corruption. But it may be observed, that the Received food is either agreeable, or disagreeable, to the Receiver; if agreeable, then there is a united consent of Parts, to act regularly and perfectly in digestion; if disagreeable, then the Received acts to the Ruine, that is, to the alteration or dissolution of the Nature of the Receiver; but if it be neutral, that is, neither perfectly agreeable, nor perfectly disagreeable, but between both, then the receiver, or rather the digestive Motions of the receiver, use a double strength to alter and transform the received. But you may ask me, _Madam_, what the reason is, that many things received, after they are dissolved into small parts, those parts will keep their former colour and savour? I answer; The cause is, that either the retentive Motions in the Parts of the received, are too strong for the digestive and alterative Motions of the receiver, or perchance, this colour and savour is so proper to them, as not to be transchanged: but you must observe, that those digestive, alterative and transchanging motions, do not act or move all after one and the same manner; for some do dissolve the natural figure of the received, some disperse its dissolved parts into the parts of the body, some place the dispersed parts fitly and properly for the