
          Bangor Sept 8th 1847

Dr. Torrey

Dear Sir

Yours of the 20th ult. [ultimate] came to the
hands of my family during my absence on an  
excursion to Mt. Katahdin.

I thank you for your kind attention, and 
particularly for the excellent suggestions relative
to the Algae of our coast and the interior waters.

I have somewhat anticipated you in some
particulars, especially with regard to our Marine
flora, having been in correspondence and
engaged in exchanging with Dr. W. H. [William Henry] Harvey 
for the last 6 mos. [months]. Dr. Gray, I am also personally
acquainted with, and have endeavored to  
supply him with [added: all] the information in my power
respecting the geographical range of plants &c 
for his forthcoming manual. And I hope 
that the little information I am now about 
to impart will be of some service to the 
"4th Part," completing the 2d vol. of your  "North Amer. [American]
Flora" particularly the order Ericacae &c.

My exploration of Mt. Katahdin, which
cost me 14 days of most severe labor, and the 
hardest of my life, now settles the question 
conclusively, in my mind, that we have here 
in Maine an Alpine region more worthy the 
attention of botanists than has been supposed,

        