
          Ansd. [Answered] July 28

Lancaster O. [Ohio] July 24. 1857

Dear Doctor

I have just seen the
2nd Vol. [Volume] U.S.P.R.R. [United States Pacific Rail Road] Expe. [Expedition] & Surveys and I
hasten to correct an error in locality and
Geography, you and Dr. Gray have fallen
into, so that it can be corrected in your
Boundary Report.

In the Botanical report of
Capt [Captain] Popes collections, you refer to the
remarkable and interesting Rutaceous
plant, we collected at the Flounce, 
(not Florence) mountain, which you 
have named Astrophyllum Dumosum.
Flounce mountain is not in New Mexico,
but on [added: the] Western or Mexican side of
the Rio Grande, about 50 or 60 miles
below El Paso. The Organ mountains
are about the same distance above
El Paso, on the American side of the
Rio Grande.

Another mistake, not of so much
        