Ex. Doc. No. 41. • 135 



APPENDIX No. 2. 



College of Physicians and Surgeons, 



JVew York^ February 10, 1848. 



My Dear Sir: I have examined the interesting collection of 

 plants which you kindly placed at my disposal, and herewith send 

 you a list of them, as complete as my numerous engagemenis per- 

 mit me to make at present. The route which you passed over is^ 

 exceedingly rich in "botanical treasures, as is evident from the 

 number of new species and genera which you were enabled to 

 make under great disadvantages, and in an expedition which was 

 almost wholly military in its character. Most of the new plants 

 T?rhich you found are only indicated, or, at most, very briefly de- 

 scribed in the following list. - A more full account of thepa will 

 te given hereafter. 

 ^ I am, my dear sir, very respectfully, yours. 



JOHN TORREY. 



To Lieutenant Colonel W. H. Emory. 



-■ 



■•, 



1847 



I . 



My Dear Sir: I give you the following written sketch of the 



route, not being able, as yen request, to get a trace made from my 

 map. 



From the 27th June to July 11th, we were traversing the country 

 between Fort Leavenworth and the bend of the Arkansas, a rich 

 rolling prairie, embraced between the 39th and 38th parallels of 

 latitude, and the 94th and 98th meridians of longitude. 



From July nth to July I3th, followed the Arkansas to Pawnee 

 'ork, in longitude about 99. At this point the fertile soil ceases, 

 except on the immediate margin of the streams. 



From the 14th July to August 1st, we were in the valley of the 

 Arkansas, occasionally crossing the spurs of low hills which inter- 

 ^^pt the direct course of the Arkansas. This part lies in latitude 

 ^^ , and between longitude 99° and 103° 1'. 



■*?rom the 1st August to the 8th, crossing the plain in a southerly 

 direction and mounting the Raton mountain, about 7,000 feet above 

 ^he sea, between latitudes 38 and 36. 



* rom the 8th August to the 14th, in the valleys of the tributaries 



10 the Canadian, and crossing the extensive plains between these 

 valleys. . t 



From the 14th August to the I8tb, ascending the great ridge 

 between the head of the Canadian and the waters of the Del Norte, 



