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t'orni mountain ranges. The conglomerate consists of trap pebbles 

 in trap sandstone ; the trap is somotinies compact, at other times 

 amygdaloidal. The strata run in a curvilinear direction. They dip 

 to the north, with a slope of 16° to 30°, the veins are at right angles 

 to the strata, and run nearly north and south. The veinstones are 

 steatite, quartz, calcspar, and zeolites. The ores are those of cop- 

 per, silver, iron, and lead, the two former being productive. The 

 two metals are chiefly native, but occur also in other forms. They 

 are least abundant in the conglomerate, more so in the trap, most 

 of all in the amygdaloid. They are found also in amygdules of the 

 rock near the veins. The quantity of native copper is very great. 

 In the Copper Falls Mine, near Eagle Harbour, on sinking a pit to 

 72 feet, the compact trap and amygdaloid were found to alternate six 

 or seven timed. The main vein was 18 to 20 inches thick. In the 

 shaft, about 40 feet down, a mass of native copper was found, of 

 which the dimensions were estimated by the author, in situ, to in- 

 dicate a weight of about 30 tons. It had not yet been found pos- 

 sible to remove it. A diagram of its position was given. 



From other shafts in the vicinity, much copper had been ex- 

 tracted, but with prodigious difficulty, from the tough metal binding 

 the rock firmly together, and rendering blasting useless. The author 

 saw, on the surface, besides many pieces of 26 lb., seven masses, 

 varying from 75 to 1200 lb., and weighing in all 4000 lb., or 

 nearly 2 tons. Native silver is found with the copper, and a mass 

 of 3;^ lb. had been obtained. The author saw one of 1^ lb. The 

 author is of opinion that the very richness of this mine in native 

 copper may render it unproductive, from the difficulty and expense 

 of working it. 



In the Cliff Mine, on Eagle River, there is the same abundance of 

 copper, with more silver. Part of the rock was said to yield 7 per 

 cent, of silver ; but subsequently was found hardly to pay for its 

 extraction. The author saw here a mass of silver of 3 J lb. Every 

 vein in the trap seen by the author contained native copper. At 

 the Eagle River Mine, silver is found in large masses, one of which 

 weighed 7 lb. 2 oz. 



On the Canada side, as far as the author had then examined it, 

 from Fort-William to Pigeon River, indurated shale prevails, over- 

 laid by greenstone, with patches of porphyry. Many trap-dikes are 

 seen, forming long narrow promontories and deep harbours on the 



