
          Philadelphia Aug 2nd 1855
Dr. Torrey

Dear Sir,

Your very welcome
favore reached me in due course and glad I 
am to know that I still have a place in 
your remembrance. I do not know whether
I informed you that I am and have been
for something more than one year, as the Northern 
Liberties has Works as Superintendent. My time
is pretty much occupied in the Office, but 
what leisure I have is [?] to my favorite 
study. I am not as yet a Member of the 
Academy, though I sometimes go there, and 
hope soon to find time neough to look more
carefully ocer the Cryptogamia.

I have examined the specimens of Barbola
and as far as I can make it, appears to be
B. obtusissima of C. Mullosa. It is near B. Suralis
but the obtuse emaginate leaves differ from that
species. I am much pleased with it.

Had I Books and authentic specimens I would
like to study the Mosses and Lichens you speak
        