wo very Ingenious Men, Dr. _Clark_, and Dr.
_Lower_, were pleased to give me an account of a pretty odd kind of
Observation: One of them assuring me, That he had several times, in the
_Lungs_ of _Sheep_, found considerable quantity of Grass in the very
Branches of the _Aspera Arteria_: And the other relating to me, That a few
Weeks since, he, and a couple of {101} Physitians, were invited to look
upon an Ox, that had for two or three daies almost continually held his
Neck streight up, and was dead of a Disease, the owner could not conjecture
at; whereupon the parts belonging to the Neck and Throat, being open'd,
they found, to their wounder, the _Aspera Arteria_ in its very Trunk all
stuff'd with Grass as if it had been thrust there by main force: which
gives us a just cause of marvelling and inquiring, both how such a quantity
of Grass should get in there; and how, being there, such an Animal could
live with it so long.

* * * * *

_Of a place in _England_, where, without petrifying Water, Wood is turned
into Stone._

The same Searcher of Nature, that was alledged in the immediately precedent
Observations, did impart also the following, in another Letter from
_Oxford_, where he saith,

I was a while since visited by a Gentleman, who tells me, That he met with
a place in these parts of _England_, where, though there be no petrifying
Spring (for that I particularly asked) Wood is turned into Stone in the
_Sandy Earth_ it self, after a better manner then by any Water I have yet
seen: For I had the Curiosity to go to look upon peices of Wood, he brought
thence, and hope for the opportunity of making some tryals to examine the
matter a little further, then I have yet been able to do. _Thus far that
Letter._

Since which time, He was pleased to give this further Information of the
same matter, with a _Mantissa_ of some other Particulars, belonging to this
Subject, in these Words.

I was lately making some Tryals with the Petrifyed Wood I told you off,
which I find to be a very odde substance, wonderfully hard and fixed. If I
had opportunity to Re-print the _History of Fluidity_ and _Firmness_, I
could add divers things about _Stones_, that perhaps would not be disliked;
and I hope, if God vouchsafe me a little leisure, {102} to insert several
of them in fit places of that _History_, against the next Edition. Here is
a certain Stone, that is thought to be Petrifyed Bone, being in shap'd li