"After I had seen this rock, I recollected that you had told me of
something of the same kind that you saw in a quarry at Low-wood Inn; and
it may be that both belonged to the same stratum or body of strata; for
the direction of the strata, as nearly as I could observe, was from S.W.
to N.E.; and this also is nearly the bearing of Low-wood from the place
where we now were. I send you a specimen, which you can compare with
those you brought from the lime quarry at Low-wood."
I have examined this specimen, and find it to be the common schistus
of that country, only containing many bivalve shells and fragments of
entrochi and madrapore bodies, and mixed with pyrites.
I have already observed that one single example of a shell, or of its
print, in a schistus, or in a stone stratified among those vertical or
erected masses, suffices to prove the origin of those bodies to have
been, what I had maintained them to be, water formed strata erected from
the bottom of the sea, like every other consolidated stratum of the
earth. But now, I think, I may affirm, that there is not, or rarely, any
considerable extent of country of that primary kind, in which some mark
of this origin will not be found, upon careful examination; and now I
will give my reason for this assertion.
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