Now, to give you an instance how the _disproportion_ of some bodies in one
respect, may be _counter-ballanc'd_ by a _contrary disproportion_ of the
same body in another respect, whence we find that the subtil _vinous
spirit_ is _congruous_, or does readily _mix_ with _water_, which in many
properties is of a very _differing nature_, we may consider that a _unison_
may be made either by two _strings_ of the same _bigness_, _length_, and
_tension_, or by two strings of the same _bigness_, but of _differing
length_, and a _contrary differing tension_, or _3ly._ by two strings of
_unequal length_ and _bigness_, and of a _differing tension_, or of _equal
length_, and _differing bigness_ and _tension_, and several other such
varieties. To which _three properties_ in _strings_, will correspond _three
proprieties_ also in _sand_, or the _particles_ of bodies, their _Matter_
or _Substance_, their _Figure_ or _Shape_, and their _Body_ or _Bulk_. And
from the _varieties_ of these _three_, may arise _infinite varieties_ in
fluid bodies, though all agitated by the _same pulse_ or _vibrative_
motion. And there may be as many ways of making Harmonies and Discords with
these, as there may be with _musical strings_. Having therefore seen what
is the cause of Congruity or Incongruity, those relative properties of
fluids, we may, from what has been said, very easily collect, what is the
_reason_ of those Relative proprieties also between _fluid bodies_ and
_solid_; for since all bodies consist of _particles_ of such a _Substance_,
_Figure_, and _Bulk_; but in some they are _united_ together more _firmly_
then to be _loosened_ from each other by every _vibrative_ motion (though I
imagine that there is no body in the world, but that some degree of
agitation may, as I hinted before, agitate and loosen the particles so as
to make them fluid) those _cohering_ particles may _vibrate_ in the same
manner almost as those that are _loose_ and become _unisons_ or _discords_,
as I may so speak, to them.
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