Which Properties may in general be deduced from two heads, _viz._ _Motion_,
and _Rest_. For, either this Globular Figure is altered by a _natural
Motion_, such as is _Gravity_, or a _violent_, such as is any _accidental
motion_ of the fluids, as we see in the _wind_ ruffling up the water, and
the _purlings_ of _Streams_, and _foaming_ of _Catarracts_, and the like.
Or thirdly, By the _Rest_, _Firmness_ and _Stability_ of the ambient
_Solid_. For if the including _Solid_ be of an _angular_ or any other
_irregular_ Form, the included _fluid_ will be near of the _like_, as a
Pint-_Pot_ full of _water_, or a _Bladder_ full of _Air_. And next, if the
including or included fluid have a greater _gravity_ one than another, then
will the _globular_ Form be deprest into an _Elliptico-spherical_: As if,
for example, we suppose the Circle _ABCD_, in the _fourth Figure_, to
represent a _drop of water_, _Quick-silver_, or the like, included with the
_Air_ or the like, which supposing there were no _gravity_ at all in either
of the _fluids_, or that the _contained_ and _containing_ were of the _same
weight,_ would be _equally comprest_ into an exactly _spherical_ body (the
ambient fluid _forcing equally_ against every side of it.) But supposing
either a greater _gravity_ in the included, by reason whereof the parts of
it being _prest_ from _A_ towards _B_, and thereby the whole put into
_motion_, and that _motion_ being _hindred_ by the _resistance_ of the
_subjacent_ parts of the ambient, the _globular_ Figure _ADBC_ will be
_deprest_ into the _Elliptico-spherical_, _EGFH_.
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