362 APPENDIX. 



tion. It is probable the Elvers St. Peter's, St. Croix, and Cbippe- 

 way would well reward exploration ; but tbe mines of Dubuque 

 J particularly invite a mineralogical survey. Their future import- 

 ance cannot fail to be duly appreciated. 



If the country has put on an aspect unfavorable to mineralogy, 

 its geological features have been observed to sustain its interest. 



Much of the interest growing out of the examination, for the 

 first time, of the mineralogy and natural history of the country, 

 is such as to commend itself, in an especial manner, to the con- 

 sideration of men of science, and of associations devoted to sci- 

 entific details, rather than the department of a government. To 

 these former, nature is a storehouse of facts, and a perpetual 

 anxiety is felt by this class of observers to know the range, not 

 only of our rock formations, but of our plants, shells, fossils, and 

 other classes of objects in our physical geography. Such desires 

 I have endeavored, as far as my means permitted, to gratify. 

 The fresh-water conchology of the lakes and rivers visited was 

 often attractive, when other objects excited little interest. The 

 species collected in this department have been referred to the 

 New York Lyceum of Natural History. 



With these remarks, the result of an arduous and interesting 

 journey through a part of the continent hitherto unexplored, I 

 have the honor to conclude my report, and to terminate the trust 

 confided to me. 



I am, sir, with respect, 



Your obedient servant, 



HENKY E. SCHOOLCEAFT, 



Geologist, &c. of the Ex. Exp. 



VIII. 



/ A Report to the Senate of the United States, in Ansiver to a Resolu- 

 tion passed hy this Body, respecting the Value and Extent of the 

 Mineral Lands on Lake Superior.'*' By Heney E. Schoolcraft. 



Sault Ste. Mabie, October 1, 1822. 



Sir: In reply to the inquiries, contained in a resolution of the 

 Senate of the United States, respecting the existence of copper 



* To the Senate of the United States : — 



In compliance with a resolution of the Senate of the 8th May last, requesting 

 "information relative to the copper mines on the southern shore of Lake Superior, 



