Huronian Series in Nova Scotia. 851 
uartzites, and have a breadth near the railway of 170 chains; 
their dip being tolerably uniform, and no repetitions visible; 
calcareous beds, holding Favosites Gothlandica. These are 
ck.* 
lack slates are exposed to a great extent on the Ardoise hi 
range, N. S. 5 
4. The Lower Silurian. 
A good exposure of the blue-black Upper Silurian slates is 
visible at the 18th telegraph post south of llerhouse station on 
the Halifax and Windsor Railway: dipping S. 20° E.; and at the 
88th telegraph post brilliant micaceous schists, interstratified 
with black corrugated slates, dip N. 40° E., the intermediate 
Space being covered with boulder drift. The brilliant micaceous 
schists, as well as the corrugated slates, are much contorted, and 
overlie conformably the gold-bearing quartzite series. 
he micaceous schists and the corrugated black slates cannot 
be distinguished from similar schists and slates described in m 
near Dumbarton station on the New Brunswick and Canada 
2 Railroad (pp. 147 and 154) where they are gssociated with the 
7 ted slates supposed to be the uppermost member of the Quebec 
} =: Soup of Sir W.E. Logan. The black corrugated slates contain 
_ ©onformable auriferous beds of quartz, but no mining is at 
 __ Present carried on in these deposits. They are about 3,000 feet 
_-:M thickness, 
5. The Gold-bearing Rocks. 
The known gold-bearing rocks of Nova Scotia consist of 
aa Fe < . with +7 e0 
slates, and thin conformable and intercalated beds of auriferous 
- * Page 131. 
