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spirit, which ought ever to prevail among those, 
who are engaged in the pursuit of information 
and. knowledge of any sort. Such persons, how- 
ever, if there be any, I would refer to the rocks 
themselves for conviction; and, if that should not 
be sufficient, I shall be happy to show them the 
specimens which I possess, and which were ex- 
tracted from their native bed by my own _ hand. 
i am far from desiring to give more importance 
to the subject than it really deserves; or, to claim 
any particular merit, for having been the first to 
Jead the attention of the Public towards it. How- 
ever, should the facts, which have been detailed, 
and the few observations, which accompany them, 
have sufficient interest to induce others to enter 
upon the same field of enquiry; and, if they 
should excite a more general inclination to examine 
the contents, and to study the Natural History of 
our Rocks, in a Geological point of view, my end 
will be obtained. And I will content myself with 
only adding, for the present, that I shall most rea- 
dily embrace any opportunity that may present itself 
in future, of stating any new circumstance that may 
