THE DEVONIAN OF CAPE BRETON—GILPIN. 387 
The ore, which was of excellent quality, was not carefully mined, 
and the admixture of stone which was sent away caused the 
Londonderry works to stop buying it. 
At the Indian Reserve, near Robinson’s Cove in Richmond 
County, similar deposits of specular iron ore are met, cutting the 
shales and sandstones. Some explorations have shown the pre- 
sence of deposits of workable size. As in Guysboro’ County 
they are in the immediate vicinity of igneous rocks. The ore is 
of good quality,and not excessively sulphurous. The fact of the 
connection between the igneous rocks and the iron ore veins is of 
value to the prospector, as by bearing it in mind, he is able to 
contract the area in which he may be searching. It is true that 
deposits of this character, owing their existence to irregular 
masses of intrusive rocks, have not the uniformity of bedded de- 
posits, but they are not necessarily more irregular than the normal 
vein deposits of specular ore. 
Some attention has been given during the past year to the 
iron ores of St. Peter's mountain, some miles south of MacNab’s 
Cove, but I am not acquainted with the ore or its surroundings. 
The ores of this district are favorably situated for shipment, and 
‘of fair quality, and it appears, so far as our present stock of in- 
formation goes, any future mining activity of the localities we 
have been considering will be found in their extraction and 
transportation. 
Mr. Fletcher’s reports, as issued by the Geological Survey of 
Canada, give fuller details about the Devonian of Cape Breton: 
and I am indebted to him for much of the information I included 
in this paper. 
