OF THE NO R T II W E S T. 



55 



Mr. Sterling informed me that he had transported 24,000 pounds of the ore to 

 Mineral Point, and had it smelted by Mr. Preston. It yielded, according to his 

 statement, twenty-three per cent, of copper. This is only three per cent, more than 

 the result of my analysis, made in the humid way, from a sample of ore from this 

 Kickapoo mine, carefully averaged. The excess obtained by reducing in the fur- 

 nace is probably iron and other impurities remaining with the copper. 



Carson and Sterling, of Mineral Point, subsequently discovered copper of a similar 

 quality on the same quarter section, only three hundred yards north of the ore bed 

 just described. 



On Section 1, Township 12, and Range 4, east of the 4th Principal Meridian, 

 copper ore has been found in the vicinity of the Barraboo River, disseminated in 

 ■pockets through brown, ferruginous beds of sandstone, occurring towards the base of 

 F. 1. It is a green carbonate and silicate of copper, similar in character to that 

 occurring near Mineral Point, and described in my Report of 1839. 



SECTION IV. 



ITS PHYSICAL AND AGRICULTURAL CHARACTER. 



The scene here depicted is a conspicuous landmark on the main branch of the 

 Chippewa, about fifty miles above its mouth. The landscape, as a whole, is by no 

 means deficient in rural beauty ; it is not, however, a country that will bear a 

 critical examination. Based on the softer sandstone of F. 1, the surface is strewed 



A M T II I T TI R A T n F. OF S A X It, CHIP I' E W A It I V F, R . 



