SURVEY OF MINNESOTA. 



logical effects are very obscure, and when the d 



to follow the use of complex mixtures dissol es 



of water, but little satisfaction can be g 3al 



speculations that attribute them to the the 



other ingredient of the mixture. But 1 , ^aid 



than that the water contains small quan _ 3 that 



give, when found in large proportions, t ;s to 



seltzer, chalybeate, and white-sulphur si .se in 

 many instances has been attended with 



In accordance with your request, tha< ju the 



results of the analyses that were made { II oi j75 for 



Messrs. Kindred and Culver, I submit ] o- : 



I. Three specimens supposed to co ttvere t to Dr. 

 P. B. Rose to be assayed. The first • .1 J . Culver, 

 Esq., of Duluth, and were reported olng . er. The 

 third specimen was from C. F. K inerd. It 

 was reported as containing " 52.32 - er fc« t3 jon of ore, 

 which at $1.30 per oz. = $68.01 per 



II. A sample of iron ore, su] a, from the 

 neighborhood of Duluth, was s< , Morley, of 

 Hudson, Ohio, a gentleman of lofe 31 iron assays. 

 He reported two assays as yield:' . .9 per cent, and 16.17 

 percent. "Tin not present )ree/iable aantity. The 

 ore appeared to contain qui? of Titanium. 

 Titanium is now supposed to 1 ous. The amount of 

 iron in the ore is so small tha luced fn it cuuld hardly 

 compete with richer ores, evf 3re both near at 

 hand. One would not likf alueless without 

 knowing the relative amoui t of silica n in the ore ; but 

 the probability that they a] , as to render the 

 addition of a flux needless, _ 



Another sample of iron ore from ith, was sent Prof. 



Morley with instructions to determine tne quantity of any thing 

 he might find in it of commercial value. After giving the details 

 of the process of analysis, he says: "You will see that every- 

 thing of any commercial value is pretty thoroughly excluded. It 

 is an iron — magnesium — sodium silicate ; with not enough iron to 

 make it of value as an iron ore." 



The first mentioned iron ore resembles an iron ore found in the 

 northern part of Rhode Island, where it occurs in a protruded 

 mass, in some respects resembling porphyry. 

 Respectfully submitted, 



S. F. Peckham, 



Minneapolis, Jan. 9, 1877. State Chemist. 



