reflecting bodies of Metals: So also as to the property of cohesion or
congruity, Water seems to keep the same order, being more congruous to
Glass then Air, and Air then Quicksilver.

A Second thing (which was hinted to me, by the consideration of the
included fluids globular form, caused by the protrusion of the ambient
heterogeneous fluid) was, whether the _Phænomena_ of gravity might not by
this means be explained, by supposing the _Globe_ of Earth, Water, and Air
to be included with a _fluid_, heterogeneous to all and each of them, so
subtil, as not only to be every where _interspersed_ through the _Air_, (or
rather the _air_ through it) but to _pervade_ the bodies of _Glass_, and
even the _closest Metals_, by which means it may endeavour to _detrude_ all
earthly bodies as far from it as it can; and partly thereby, and partly by
other of its properties may move them towards the Center of the Earth. Now
that there is some such fluid, I could produce many Experiments and
Reasons, that do seem to prove it: But because it would ask some time and
room to set them down and explain them, and to consider and answer all the
Objections (many whereof I foresee) that may be alledged against it; I
shall at present proceed to other _Queries_, contenting my self to have
here only given a hint of what I may say more elswhere.

A Third _Query_ then was, Whether the _heterogeneity_ of the _ambient
fluid_ may not be accounted a _secondary cause_ of the _roundness_ or
_globular form_ of the _greater bodies_ of the world, such as are those of
the _Sun_, _Stars_, and _Planets_, the _substance_ of each of which seems
altogether _heterogeneous_ to the _circum-ambient fluid æther_? And of this
I shall say more in the Observation of the Moon.

A Fourth was, Whether the _globular form_ of the _smaller parcels_ of
matter here upon the _Earth_, as that of _Fruits_, _Pebbles_, or _Flints_,