: P : : . %y 2 oe By . 
70 Dr. C. T. Jackson on | the Wr es re ~~ , 
All the experiments I have devised and éxiibdned: to discover: :3 
the cause of the separation of the copper and silver, as seen in» 
these specimens, have given negative results. ‘The experiments 
were made on fused alloys of silver and copper. The metals did 
not separate by galvanic aha Little has yet been a to- 
s extensive working of the Northwest Company’s copper. 
Alvin: It is situated a few et from Eagle Harbor, = several « ~ 
rich veins of native copper, with some native silver, have been.- | 
discovered and wrought to a pare epth. The want of confi- {°. 
dence in this new kind of mining onvealy the investment of 
sufficient capital and the employment of a sufficient mining force 
to Iam confident, that, with capital and skill, 
this company’s mine might soon be rendered profitable. 
The old Lake Superior Company, the first organized for min- 
ing on Lake Superior, was unsuccessful in its first operations 
from several causes, among which the want of miners capable of 
carrying on the work in a proper manner was the chief; and it 
aes 
from districts wholly unlike “ce one ets were sent to = 
There was also an erroneous opinion prevalent among mat 
the original stockholders that mining could be made pictidabas 
from the outset,—a most fallacious ‘idea. The company soon 
closed up its mining operations, and I have heard that a new or- 
ganization has been since adopted, and it is hoped, if mining op- 
erations are again begun, a regular system will be pursued, mod- 
elled after the plan of the Boston and Pittsburg Company’s work- 
ings. ‘The Lake Superior or Phenix Company’s veins are rich in 
native copper and silver, — although the leader or prehnite vein — 
is but a few inches wide, it will doubtless lead to a solid copper 
vein, like those heretofore prise tae Masses of pure copper, of 
large size, weighing some thousands of pounds, were obtained 
from an ancient ravine or excavation that had been worn out by 
the river running over the vein, and large pieces of silver were 
also found. ‘These show the contents of the lode in the true 
vein. Most of the work heretofore executed at this mine has 
been done in the western wall of the vein and not in the vein 
itself. ‘To the company owning the Lake Superior mine is due 
the credit of the earliest mining enterprise on the Lake, and those 
who have followed after them should remember that they opened 
the way and introduced the business of mining into the then un- 
broken wilderness of Lake Superiar. 
