THE 



AMERICAN 



JOURNAL OF SCIENCE, &c. 



MINERALOGY, GEOLOGY, TOPOGRAPHY, &c. 



Art. I. — Account of the JVative Copper on the southern 

 shore of Lake Superior, wiih historical citations and mis- 

 cellaneous remarks, in a report to the Department of War : 

 by Henry R. Schoolcraf'Ji' 



H 

 (The following letter accompanied Mr. Schoolcraft's Report.) 



Albany, Feb. 16th, 182L 



TO PROFESSOR SILLIMAN. 



Sir, 



Agreeably to your request, and the permission of the Sec- 

 retary at War, I enclose you a copy of my report on thfe; 

 Copper Mines of Lake Superior. In preparing it, I have 

 consulted the former travellers of the region, and by com- 

 bining their remarks with my own, endeavoured to present, 

 in an embodied form, all the information extant upon the 

 subject. It has been a cause of regret to me however, that 

 more time was not devoted to the mineralogy and geology 

 of that section of country, but it appeared incompatible 

 with the more important objects of the expedition, and I 

 could only make use of the time that was allowed to me. 

 In presenting the subject to the Secretary at War, I thought 

 my observations would be more acceptable in a practical 

 and business form, than as assuming the character of a sci- 

 entific memoir, and in choosing an intermediate course, I 

 have probably said more on the geology of the country than 

 VoL.III...,No.2. 26 



