HOXEYMAX GEOLOGY OF AXTIGOXISHE COUXTY. 73 



contact with syenite, so as to form a breccia f-ia wholly unaltered, 

 Enlomostraca even being unaffected. 



The reason why is obvious. These syenites existed long before 

 the carboniferous limestones were formed. They were evidently 

 also existing in the bottom of the sea of the carboniferous period. 

 The organic agencies forming the limestone lived and died on and 

 around them. Their remains even until the present period have 

 been totally unaffected by metamorphosing agencies such as those 

 which were at work at Ari&aig Pier and elsewhere. 



The gypsum re-appears projecting from the bank of Right's 

 River, between Trotter's factory, on the north, and on the bank of 

 West River, south of Antigonishe, on the south. Passing from 

 Right's River, and skirting the overlapping lower carboniferous 

 conglomerates already noticed, that connect the northern and 

 southern carboniferous areas, it meets Brailey Brook, and proceeds 

 along its south side, forming a lofty wall, whose foot is laved by 

 the water of the Brook. This gypsum has the limestones of 

 Purcell's quarry, Mcintosh's and Grant's occurring at intervals 

 between the Antigonishe and Malignant Cove road, and the place 

 where Brailey's Brook proceeds from the mountain. These lime- 

 stones run nearly parallel with the gypsum at a distance of 300 to 

 500 feet on the north, underlying the gypsum and overlying the 

 conglomerate, which are formed against the metamorphic middle or 

 upper silurian slates of the mountains already described. The 

 limestones contain deposits of brown ochre caleliopyrite, and occa- 

 sionally malachite, (ores of copper) in very small quantities. They 

 are used extensively for building purposes. The Antigonishe 

 Cathedral is in large part built of the limestone from Mcintosh's 

 quarry. The gypsum proceeds beyond Brailey Brook, westward 

 to the vicinity of James' River, and passes to the south appearing 

 at about a distance of two miles, in a considerable outcrop at 

 Addington Forks. 



The limestones proceed westward, after being left by the gypsum 

 at James' River, terminating in this direction with pssoeiated con- 

 glomerates on the road side at the beginning of the Big Clearing 

 8 miles from Antioonishe. 



