
          Phila April 22, 1869
Dr. John Torrey N.Y.

My Dear Sir,
I received your kind
favor of 20th, last evening, on my return
from a trip to Cedar Bridge N.Y., of
which I will speak presently.
In reply to yours, I bought this
Dr. Gray about three years ago, two broken
sets of Wright Ferns which gave me
the msot of the species which he collected.
Though there were many gaps 
in the series. I might take an early opportunity 
to send you a mem. of my
desiderata, or it would not be presuming, 
I would say that such of [crossed out: them] [added: the set] as 
you have to spare would be very
welcome to me, eve in duplicates,
as I could make them useful. But your
kindness has already put me under
great obligation to you, which I cannot

        