208 Mr. Schooleraft on the 
castern shores, were covered with copper ore, which appear- 
ed like beds of copperas, (sulphat of iron) of which many 
tons lay in a small space.” (1) 
ive years after Carver’s visit (A. D. 1771,) a consider- 
able body of native copper was dug out of the alluvial earth 
on the banks of the Ontonagon river by two adventurers of 
the name of Henry and Bostwick, and, together with a lump 
of silver ore of eight pounds weight of a blue colour and 
semi-transparent, transported to Montreal, and from thence 
lipped to England, where the latter was deposited in the 
tish museum after an analysis of a portion of it, by 
hich it was determined to contain 60 per cent of silver. (2) 
These individuals were connected with a company which 
had been formed in England for the purpose of working 
the copper mines of lake Superior, among whom were the 
Duke of Gloucester, Sir William Johnstone, and several 
other gentlemen of rank. They built a small vessel at 
Point aux Pins, six miles above the Sault de St. Marie, to 
facilitate their operations upon the lake, and a considerable 
(1) Carver's Travels p. 67. (2) Henry's Travels, p. 30. 
