222 



Most of the time we were living in tlie woods like Indians, exposed to 

 every influence of the climate, as completely as so many wild beasts. ' 



These are the principal points which occur to me, relating to the oc- 

 cupation of this country for agricultural pui-poses. 



Eagle HiJiBOR, May 22, 1854. 



IRON IN THE UPPER PENINSULA OF MICHIGAN. 



BY CHARLES A. TROWBRIDGE, OF DETROIT. 



There is probably no part of the American Continent which can 

 boast of as pure Iron ore, in as great quantities, entirely above the sur- 

 face of the earth, (the amount below the surface never having been 

 ascertained,) as the State of Michigan. 



With regard to its purity, we quote a letter addressed to " Edward 

 K. CoUins, Esq.," by "James R. ChHton, M. D.," of New York City, 

 in which Dr. Chilton says : " I give below the analysis of four samples of 

 Iron ore, which I took from boxes opened in my presence at your of- 

 fice in Wall-street, each box being marked in accordance with the 

 sample. The result is as follows : 



"COLLINS IRON COMPANy's" IRON HILL, ON SEC. NO. 2. 



Per Oxide of Iron, 92 26-100, equal to 64 58-100 Metallic Iron. 



Silicia, 5 15-100. 



Alumina, 1 71-100. 



Manganise — None. 



Water and Loss, 88-100. 



Making 100 00 parts. 



MESSRS. TROWBRIDGE & GRAVERAt's IRON HILL, SEC. NO 10. 



Per Oxide of Iron, ..... 94 37-100, equal to 66 06-100 Metallic Iron . 



SiUcia, 3 11-100. 



Alumina, 1 44-100. 



Manganise, 16-100. 



Water and Loss, 92-100. 



Making 100 00 parts. 



