g else. It being impossible
to conceive that body should operate on WHAT IT DOES NOT TOUCH (which is
all one as to imagine it can operate where it is not), or when it does
touch, operate any other way than by motion.

12. By motions, external, and in our organism.

If then external objects be not united to our minds when they produce
ideas therein; and yet we perceive these ORIGINAL qualities in such of
them as singly fall under our senses, it is evident that some motion
must be thence continued by our nerves, or animal spirits, by some parts
of our bodies, to the brains or the seat of sensation, there to produce
in our minds the particular ideas we have of them. And since the
extension, figure, number, and motion of bodies of an observable
bigness, maybe perceived at a distance by the sight, it is evident
some singly imperceptible bodies must come from them; to the eyes, and
thereby convey to the brain some motion; which produces these ideas
which we have of them in us.

13. How secondary Qualities produce their ideas.

After the same manner that the ideas of these original qualities are
produced in us, we may conceive that the ideas of SECONDARY qualities
are also produced, viz. by the operation of insensible particles on our
senses. For, it being manifest that there are bodies and good store of
bodies, each whereof are so small, that we cannot by any of our senses
discover either their bulk, figure, or motion,--as is evident in the
particles of the air and water, and others extremely smaller than those;
perhaps as much smaller than the particles of air and water, as the
particles of air and water are smaller than peas or hail-stones;--let
us suppose at present that, the different motions and figures, bulk and
number, of such particles, affecting the several organs of our senses,
produce: in us those different sensations which we have from the colours
and smells of bodies; v.g. that a violet, by the impulse of such
insensible particles of matter, of peculiar figures and bulks, and in
different degrees and modifications of their motions, causes the ideas
of the blue colour, and sweet scent of that flower to be produced in our
minds. It being no more impossible to conceive that God should annex
such ideas to such motions, with which they have no similitude, than
that he should annex the idea of pain to the motion of a piece of steel
dividing our flesh, with which that idea hath no resemblance.

14. They depen