himself to be certified, by a
Letter from a Learned Friend of his that observed it, _Fons abest hinc,
&c._ The Letter is a little too long to be inserted, but the substance is
this; That this Well ebbs and flows quite contrary to the flowing and
ebbing of the Sea in those parts: for 'tis almost empty at Full Sea, but
full at Low water. This may happen from the Channel by which it is
supplied, which may come from the bottom of a Sea very remote from those
parts, and where the Tides are much differing from those of the approximate
shores. A Fourth, lies in _Westmorland_, near the River _Leder_; _Qui
instar Euripi saepius in die reciprocantibus undis fluit & refluit_, which
ebbs and flows many times a day. This may proceed from its being supplyed
from many Channels, coming from several parts of the Sea, lying
sufficiently distant asunder to have the times of High-water differing
enough one from the other; so as that whensoever it shall be High water
over any of those places, where these Channels begin, it shall likewise be
so in the Well; but this is but a supposition.

A Seventh _Query_ was, Whether the _dissolution_ or mixing of several
bodies, whether fluid or solid, with saline or other Liquors, might not
partly be attributed to this Principle of the congruity of those bodies and
their dissolvents? As of Salt in Water, Metals in several _Menstruums_,
Unctuous Gums in Oyls, the mixing of Wine and Water, &c. And whether
_precipitation_ be not partly made from the same Principle of Incongruity?
I say _partly_, because there are in some Dissolutions, some other Causes
concurrent.

I shall lastly make a much more seemingly strange and unlikely _Query_; and
that is, Whether this Principle, well examined and explained, may not be
found a _co-efficient_ in the most considerable Operations of Nature? As in
those of _Heat_, and _Light_ consequently of _Rarefaction_ and
_Condensation_, _Hardness_, and _Fluidness_, _Perspicuity_ and
_Opacousness_, _Refractions_ and _Colours. &c._ Nay, I know not whether
there may be many things done in Nature, in which this may not (be said to)
have a Finger? This I have in some other passages of this Treatise further
enquired into and shewn, that as well _Light_ as _Heat_ may be caused by
_corrosion_, which is applicable to _congruity_, and consequently all the
rest will be but _subsequents_: In the mean time I would not willingly be
guilty of that _Error_, which the thrice Noble and Learned _Ver