
          You will exceedingly oblige 
me by forwarding me your 
monographs as they come 
out. They may be left with
our friend, Mr. A. Hollack
at the tract house in Nassau 
street. Every thing committed 
to his care comes safe. can
you send me a specimen of
Buxbaumia aphylla? I hope
some time or other to visit you
and your city again, but can
not tell when it will be.
Very truly yours, J. Porter.
Professor J. Torrey
        