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APPENDIX No. 2. 



College of Physicians and Surgeons, 



New 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 engagements per- 

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

 exceedingly rich in botanical treasures, as is evident from the num- 

 ber 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 which 

 you found are only indicated, or, at most, very briefly described in 

 the following list. A more full account of them will be given 

 hereafter. 



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



JOHN TORREY. 



To Lieutenant Colonel W. H. Emory. 



July 22, 1847. 



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

 route, not being able, as you 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 11th to July 13th, followed the Arkansas to Pawnee 

 fork, 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- 

 rupt the direct course of the Arkansas. This part lies in latitude 

 38°, and between longitude 99° and 103° 1'. - 



From the 1st August to the 8th, crossing the plain in a southerly 

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

 the sea, between latitudes 38 and 36. 



From the 8th August to the 14th, in the valleys of the tributaries 

 to the Canadian, and crossing the extensive plains between these 

 valleys. 



From the 14th August to the 18th, ascending the great ridge be- 

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

 halting at Santa Fe, in latitude 35° 41', on a tributary of the Del 

 Noite, about 15 miles distant from the Del Norte, and about 1,500 

 feet above that river and 6,850 above the sea. 



