182 THE JOURNAL OF GEOLOGY. 
acinus var. convexa, the large Clinton form found also in the 
upper or ferruginous Clinton in the Sharpsville section. This 
showed that the pebbles were of Clinton and not of Cincinnati 
age, as hitherto stated. The lithological character of the various 
pebbles was similar to the various Clinton layers known in this 
vicinity, but not to any known Cincinnati rock. Eastward from 
this road bed exposure the conglomerate is well exposed along 
a more northerly situated streamlet, running, as did the last, only 
in wet weather (locality 15). There is evidently an upper hori- - 
zon of the Clinton, scarcely more than 15 inches thick, which is 
full of pebbles. Many of these are eight to ten inches in diameter. 
The pebbles are always very flat, and rarely contain fossils. 
They evidently are chiefly derived from the stratified, more 
sandy looking Clinton layers, which characterize the lower half 
of the Clinton, but which are also found very far up in the series. 
At the present locality, this sandy stratified rock forms a layer 
immediately above the conglomerate layer, and is abundantly 
shown in the remainder of the section on following the stream 
eastward. Both of the streams mentioned flow eastward, and 
join before emptying into the main fork of Brush ereek:* (ihe 
base of the Clinton, with its underlying Medina, is well shown a 
little east of this junction, on the north side of the stream 
(locality 16). The top layer showed one of the annelid teeth 
characteristic of this horizon. Following the hill-side along the 
western side of the open valley, the fine road-side exposure of 
the base of the Clinton, to which reference has already been 
made, is seen (locality 17). It is on the land of J. V. D. Smart, 
on the north side of the road leading from Belfast to Fairfax, 
and not far west of the bridge over the fork of Brush creek 
southwest of Belfast. At the top, 12 inches of the sandy look- 
ing limestone were shown. Underneath were four inches of chert ; 
this was the chert layer seen on the eastern side of the creek in 
the Wm. Haigh section. Below were 26 inches of massive lime- 
stone with cherty nodules and also with cherty bands along the 
vertical crevices of the rock, showing the secondary nature of 
this chert. Then, 20 inches of shelly limestone, meaning by this 
