APPENDIX. 379 



&2. BOTANY 



A CATALOGUE 



Of plants collected in the North Western territory by 

 Mr. Thomas Say, in the year, 1823. By Lewis D. de 



SCHWEINITZ. 



Mr. Thomas Nuttall, who had taken upon himself the 

 charge of examining this collection, and had begun to com- 

 mit his remarks to paper, not having returned from Europe 

 in time to complete his work, the plants collected by Mr. 

 Say were entrusted to me, with a request to attempt their 

 determination, and a description of such as appeared to be 

 nondescripts. I have undertaken this task with great dif- 

 fidence and sincere regret that it could not be executed by 

 a gentleman, every way so exclusively competent as Mr. 

 Nuttall is, both from his well known botanical talents in 

 general, and his particular acquaintance with the western 

 plants, my own knowledge of which is almost confined to 

 what I owe to that gentleman's liberal and kind commu- 

 nications. 



As it, however, appeared desirable, that a catalogue 

 should be made out for the Appendix of the account of 

 Major Long's second expedition, I have exerted myself to 

 the best of my abilities to furnish it, in continuation of the 

 work commenced by Mr. Nuttall, which, however, unfor- 

 tunately comprised only the five first plants of the present 

 cataloKue. 



