BUILDING STONE. 603 
and durable and well adapted to bridge building and all other plain and 
massive masonry. 
In Summit county the Carboniferous conglomerate underlies all the 
higher portions of the county and forms the surface rock over all the 
middle portion, except where cut through by the Cuyahoga and its trib- 
utaries ; though generally covered and concealed by beds of drift, it is 
exposed and quarried in all the towns north of Akron. In the valley of 
the Cuyahoga it forms cliffs sometimes 100 feet in perpendicular height. 
The rock is about 100 feet in thickness, generally a coarse-grained, light 
drab sandstone, but in some localities, and especially near the base of 
the formation, becoming a mass of quartz pebbles, with just enough 
cement to hold them together. (a) 
All the accessible material that is now known in this formation is 
applicable to ordinary purposes of building. Although it is quarried in 
many different localities for local supply, it is worked extensively in but 
two localities—at Akron and in Twinsburg township. The quarries at 
Akron are worked principally to supply the town with foundation 
stone and the immediate vicinity with bridge stone. The quarries in 
Twinsburg township are at present worked quite extensively to supply 
material for the construction of bridges on the Cleveland and Pittsburgh 
and the Connotton Valley railroads. 
A section in Mr. Parmelee’s quarry exhibits 18 inches of soil and 
gravel, 15 feet of coarse sandstone in which thin strata of pebbles occur 
from 13 to 4 feet apart, and 6 feet of very coarse conglomerate under- 
laid by shale. The 15-foot course of sandstone occurs in a solid mass, 
which separates easily where strata or sheets of pebbles called ‘“‘bed- 
seams” occur. In the Akron quarries the stone is fine-grained and more 
homogeneous than in the Twinsburg quarries. In Mr. Hugill’s quarry 
the rock has been quarried to a depth of 40 feet, and the material ob- 
tained is a coarse-grained sandstone free from pebbles. Formerly, ina 
quarry known as Wolf’s quarry, near Akron, a local stratum produced a 
deep reddish purple sandstone, perhaps the most beautiful building stone 
ever produced in the state, which was used quite extensively in Cleveland, 
and two residences on Euclid avenue are constructed of this material. 
At Cuyahoga Falls a similar material has been quarried to some extent 
for the construction of buildings in the town. The quantity of this 
variety of building stone is apparently not large, and it seems that it is 
(a) Gocamiqgcal Survey of Ohio, Vol. I, p. 212: “Geology of Summit county,” by J.S. Newberry. 
