My plan would be for you to travel over the
State, and make a complete mineralogical, and geological, and
statistical survey of it, which would probably take you a year or more.
In the mean time, I would devote all my leisure to the collection and
arrangement of such other materials as we should need in the compilation
of the work."
_Feb. 18th_. Professor Dewy writes, vindicating my views of the
Huttonian doctrines, respecting the formation of secondary rocks, which
he had doubted, on the first perusal of my memoir of the fossil tree
of Illinois.
_Feb. 20th_. Caleb Atwater, Esq., of Circleville, Ohio, the author of
the antiquarian papers in the first volume of _Archaeologiae Americana_,
writes on the occasion of my geological memoir. He completely confounds
the infiltrated specimen of an entire tree, in the external strata, and
of a recent age, which is prominently described in my paper, with
ordinary casts and impressions of organic remains in the elder secondary
rock column.
_Feb. 24th_.
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