{848° J 
LXXIV. Account of the Native Copper on the Southern Shore of 
Lake Superior, with historical Citations and miscellaneous 
Remarks, in a Report to the Department of War. By HENRY 
R, ScHooLcrarFt™. 
(The following Letter accompanied Mr. Schooleraft’s Report.) 
Albany, Feb. 16, 1821, 
To Professor Silliman. 
Sin, — Acrezasry to your request, and the permission of 
the Secretary at War, I inclose you a copy of my Report on 
the Copper Mines of Lake Superior. In preparing it, | have 
consulted the former travellers of the region, and, by combining 
their remarks with my own, endeavoured to present, in an em- 
bodied 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 scientific memoir; and in choosing an intermediate course, I 
have probably said more.on the geology of the country than may 
be thought important to the statesman, and less than will be con- 
sidered satisfactory to the professed geologist and scientific 
amateur. A few marginal notes have therefore been added, but 
I have been studious not to overload the original MS. in that 
way I do not send the views and geological charts accompanying 
the Report to Mr. Calhoun, as it would be very inconvenient at 
the present period to copy them, and as the subject may be suffi- 
ciently understood without these embellishments. 
With respect to the deductions, so far as science is concerned, 
it is hoped they will be read with candour, and I therefore sub- 
mit them to your judgement and to that of the scientific public, 
With great respect and regard, 
Your most obedient servant, 
Henry R. ScHooLcrart. 
Vernon, Oneida Co. (N. Y.) Noy. 6, 1820. 
Hon. Joun C. Caruoun, Secretay at War, 
Sir,—I HAVE now the honour to submit to you such obserya- 
tions as haye occurred to me, during the recent expedition under 
Gov. Cass, in relation to the Copper Mines of Lake Superior ; 
* From the American Journal of Science, &¢, No, 2, vol. iii. 
reserving 
