ck of limestone; nevertheless, evidence goes to prove
that such cases are not uncommon. Now, if, instead of limestone, which
is a water-product, the creature had been found embedded in granite,
which is a fire-product; although the fact might have been from
eye-sight equally unimpeachable, how much more unlikely such a
circumstance would have appeared in the judgment of science. To the
rustic, the limestone case is as stout a puzzle as the granite one; but
_a priori_, the philosopher--taking into account the aqueous fluidity of
such a matrix at a period when reptiles were abundant, the torpid
qualities of the toad itself, and the fact that time is scarcely an
element in the absence of air--arrives at an antecedent probability,
which comforts his acceptance of the fact. The granite would have
staggered his reason, even though his own experience or the testimony of
others were sufficient, nay, imperative, to assure his faith: but in the
case of limestone, Reason even helps Faith; nay, anticipates and leads
it in, by suggesting the wonder to be previously probable. How truly,
and how strongly this bears upon our theme, let any such philosophizing
mind consider.

But enough of illustrations: although these, multipliable to any amount,
might bring, each in its own case, some specific tendency to throw light
upon the path we mean to tread: it is wiser perhaps, as implying more
confidence in the reader's intellectual powers, to leave other analogous
cases to the suggestion of his own mind; also, not to vex him in every
instance with the intrusive finger of an obvious application.
Meanwhile, it is a just opportunity to clear the way at once of some
obstructions, by disposing of a few matters personal to the writer; and
by touching upon sundry other preliminary considerations.

1. The line of thought proposed is intended to show it probable that any
thing which has been or is, might, viewed antecedently to its existence,
by an exercise of pure reason, have by possibility been guessed: and on
the hypothesis of sufficient keenness and experience, that this idea may
be carried even to the future. Any thing, meaning every thing, is a word
not used unadvisedly; for this is merely a suggestive treatise, starting
a rule capable of infinite application: and, notwithstanding that we
have here and now confined its elucidation to some matters of religious
moment only, as occupying a priority of importance, and at all times
deserving the l