
          from him last winter among which are two new
 genera  Riddilia Reff. & [Eberlia Ridd?].
     Geological studies & research have for some
 years been interesting to me.  Before I paid any
 attention to botany I had collected a few pupils
 and have since made some additions to my
 collections.  Last winter W Beadle gave me
 the geological reports of the state of New york for
 1837 & 8 by which I find (what I before suspected)
 that some of your formations are the equivalents
 of ours.  The limestone of the falls of the Ohio
 and outward is of the same geological era
 as that of [Eifel?] & [Bumberg?] in Germany as appears
 by the [juxtapositions?] especially Cyathophylla
 [?] of [Gold..}.  Some of our [?] 
 are not found in [Gold..?].
    I am very anxious to obtain your geological
 reports for last winter.  When can they be
 obtained?  I cannot ascertain that any of the
 reports have been offered for sale by the book-
 sellers.
    The errors in the article on Am. botany in
 [Murray's?] geography, are in respect to the geograph-
 ical range of a few species, as you will [perceive?] an

        