air being fluid, changes or moves continually, and perchance the same parts of the air, which compassed him once, will never come near him again. But you may say, If a man be hurt, or hath some mischance in his body, so as to have a piece of flesh cut out, and new flesh growing there; then we say, because the adjoyning parts do not change, that a new piece of flesh is grown in the same place where the former flesh was, and that the place of the former flesh cut or fallen out, is the same of this new grown flesh. I answer, In my opinion, it is not, for the parts being not the same, the places are not, but every one hath its own place. But if the wound be not filled or closed up with other new flesh, you will say, that according to my opinion there is no place then at all. I say, Yes, for the air or any thing else may be there, as new parts joyning to the other parts; nevertheless, the air, or that same body which is there, hath not taken the fleshes place, which was there before, but hath its own; but, by reason the adjoyning parts remain, man thinks the place remains there also which is no consequence. 'Tis true, a man may return to the same adjoining bodies, where he was before, but then he brings his place with him again, and as his body, so his place returnes also, and if a mans arm be cut off, you may say, there was an arm heretofore, but you cannot say properly, this is the place where the arm was. But to return to my first example of the mixture of Water, and Earth or Air; Suppose water is not porous, but onely dividable, and hath no other place but what is its own bodies, and that other parts of water intermix with it by dividing and composing; I say, there is no more place required, then what belongs to their own parts, for if some contract, others dilate, some divide, others joyn, the places are the same according to the magnitude of each part or body. The same may be said of all kinds or sorts of mixtures, for one body hath but one place; and so if many parts of the same nature joyn into one body and increase the bulk of the body, the place of that same body is accordingly; and if they be bodies of different natures which intermix and joyne, each several keeps its place; And so each body and each particular part of a body hath its place, for you cannot name body or part of a body, but you must also understand place to be with them, and if a point should dilate to a world, or a world contract to a point, the place would always be the same with the body. And thus I have declared my opinion of this subject, which I submit to the correction of your better judgment, and rest, Madam, _Your Ladiships_ _faithful Friend and humble Servant._ [1] _Philos. p._ 2. _a._ 10, 11, 12, 13, 14. XXXII. _MADAM,_