The former, indeed, is a particular
kind of sensation, but the latter is merely a vibrative or
undulatory motion the air.
. I thought I had already obviated that distinction,
by answer I gave when you were applying it in a like case before.
But, to say no more of that, are you sure then that sound is
really nothing but motion?
. I am.
. Whatever therefore agrees to real sound, may with
truth be attributed to motion?
. It may.
. It is then good sense to speak of as of a
thing that is , , , .
. see you are resolved not to understand me. Is it
not evident those accidents or modes belong only to sensible
sound, or the common acceptation of the word, but not
to in the real and philosophic sense; which, as I just
now told you, is nothing but a certain motion of the air?
. It seems then there are two sorts of sound -- the
one vulgar, or that which is heard, the other philosophical and
real?
.
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