I cannot conceive why your Author is so much for little and insensible parts, out of which the Elements and all other bodies are made; for though Nature is divideable, yet she is also composeable; and I think there is no need to dissect every creature into such little parts, to know their nature, but we can do it by another way as well; for we may dissect or divide them into never so little parts, and yet gain never the more knowledg by it. But according to these principles he describing amongst the rest the nature of Water, says,[1] That those little parts, out of which Water consists, are in figure somewhat long, light and slippery like little Eeles, which are never so closely joyned and entangled, but may easily be separated. To which I answer, That I observe the nature and figure of water to be flowing, dilating, divideable and circular; for we may see, in Tides, overflowings, and breaking into parts, as in rain, it will always move in a round and circular figure; And I think, if its parts were long and entangled like a knot of Eeles, it could never be so easily contracted and denced into snow or ice. Neither do I think, That Salt-water hath a mixture of somewhat grosser parts, not so apt to bend;[2] for to my observation and reason, the nature of salt-water consists herein, that its circle-lines are pointed, which sharp and pointed figure makes it so penetrating; yet may those points be separated from the circle lines of water, as it is seen in the making of Salt. But I am not of your Authors opinion, That those little points do stick so fast in flesh, as little nails, to keep it from putrefaction; for points do not always fasten; or else fire, which certainly is composed of sharp-pointed parts, would harden, and keep other bodies from dissolving, whereas on the contrary, it separates and divides them, although after several manners. But Putrefaction is onely a dissolving and separating of parts, after the manner of dilation; and the motion of salt is contracting as well as penetrating, for we may observe, what flesh soever is dry-salted, doth shrink and contract close together; I will not say, but the pointed parts of salt may fasten like nayls in some sorts of bodies, but not in all they work on. And this is the reason also, that Sea-water is of more weight then fresh-water, for being composed of points, those points stick within each other, and so become more strong; But yet do they not hinder the circular dilating motion of water, for the circle-lines are within, and the points without, but onely they make it more strong from being divided by other exterior bodies that swim upon it. And this is the cause that Salt-water is not so easily forced or turned to vapour, as Fresh, for the points piercing into each other, hold it more strongly together; but this is to be considered, that the points of salt are on the outside of the watery Circle, not on the inside, which causes it to be divideable from the watery Circles. I will conclude, when I have given the reason why water is so soon suckt up by sand, lime, and the like bodies, and say that it is the nature of all spongy, dry and porous bodies, meeting with liquid and pliable bodies as water, do draw and suck them up, like as animal Creatures being thirsty, do drink: And so I take my leave, and rest,
Madam,
Your Faithful Friend
and Servant.
[1] Of Meteor. c. 1. a. 3.
[2] C. 3. a. 1.
[XXXIX.]
MADAM,
Concerning Vapour, Clouds, Wind and Rain, I am of your Authors opinion,[1] That Water is changed into Vapour, and Vapour into Air, and that dilated Vapours make Wind, and condensed Vapours, Clouds and Mists; But I am not for his little particles, whereof, he says, Vapours are made, by the motion of a rare and subtil matter in the pores of terrestrial bodies; which certainly I should conceive to be loose atoms, did he not make them of several figures and magnitude: for, in my opinion, there are no such things in nature, which like little Flyes or Bees do fly up into the air; and although I grant, that in Nature are several parts, whereof some are more rare, others more dense, according to the several degrees of matter, yet they are not single, but all mixt together in one body, and the change of motions in those joyned parts, is the cause of all changes of figures whatever, without the assistance of any forreign parts: And thus Water of it self is changed to Snow, Ice, or Hail, by its inherent figurative Motions; that is, the circular dilation of Water by contraction, changes into the figure of Snow, Ice, or Hail or by rarifying motions it turns into the figure of Vapour, and this Vapour again by contracting motions into the figure of hoar frost; and when all these motions change again into the former, then the figure of Ice, Snow, Hail, Vapour and Frost, turns again into the figure of Water: And this in all sense and reason is the most facil and probable way of making Ice, Snow, Hail, &c. As for rarefaction and condensation, I will not say that they may be forced by forreign parts, but yet they are made by change and alteration of the inherent motions of their own parts, for though the motions of forreign parts, may be the occasion of them, yet they are not the immediate cause or actors thereof. And as for Thunder, that clouds of Ice and Snow, the uppermost being condensed by heat, and so made heavy, should fall upon another and produce the noise of thunder, is very improbable; for the breaking of a little small string, will make a greater noise then a huge shower of snow with falling, and as for Ice being hard, it may make a great noise, one part falling upon another, but then their weight would be as much as their noise, so that the clouds or roves of Ice would be as soon upon our heads, if not sooner, as the noise in our Eares; like as a bullet shot out of a Canon, we may feel the bullet as soon as we hear the noise. But to conclude, all densations are not made by heat, nor all noises by pressures, for sound is oftener made by division then pressure, and densation by cold then by heat: And this is all for the present, from,