178 
GEOLOGY OF THE THIRD DISTRICT. 
The stone of which the large academy at the village of De Ruyter is built, was obtained 
from Burdick’s quarry. It is a grey sandstone, associated with bluish slate and shale, as usual 
with these upper rocks. 
The second good locality is Harris’ quarry, near the top of the hill to the west of North- 
Norwich. The quarry was opened for the use of the Chenango canal. In the State Collec¬ 
tion are a number of these fucoids, obtained from De Ruyter, and this quarry, and which 
will not fail to convince the most skeptical that the nature or origin of these singular produc¬ 
tions was organic and vegetable. 
It was the intention of the reporter, at the end of this group, as stated in the prefatory part 
of the Portage group, to have given some explanatory matters relative to the three groups 
which compose the upper part of the Erie division, as put together upon the geological map 
of the State ; but as something of the kind will be required for all that part of the map which 
relates to the district, the whole will with more propriety appear together in the chapter upon 
the map. 
