186 THE JOURNAL OF GEOLOGY. 
Peebles Station—About 10 miles southeast of Belfast, and 44 
miles southeast of the Todd’s Fork locality. 
Following the Cincinnati, Portsmouth & Virginia railroad west- 
ward from Peebles, a high trestle is crossed, west of which the 
Niagara shales are well exposed. Still farther westward, about 
two miles from Peebles station, there is a small house on the 
south side of the railroad (locality 30). It is on the land of 
Tom Gardner. The farm line runs a short distance east of the 
house, and east of the line is the farm of James Philips. Along 
the railroad, 300 feet west of the house, the Dayton lime- 
stone is well exposed (locality 31). In the middle courses af 
this Pentamerus oblongus is found. In the report of the Ohio 
Geological Survey for 1870, page 280, the following statement 
is found: “Col. James Greer, of Dayton, has in his cabinet a 
specimen obtained from the Dayton stone, the lowest member of 
the Niagara series, which is probably Pentamerus oblongus, in 
somewhat abnormal form.’’ The present is as far as known the 
first instance in which the occurrence of the Pentamerus in the 
Dayton limestone is authenticated by its reference to a locality 
where the rock is evidently zz setw. So far no lower horizon for 
this fossil in Ohio is known. It is additionally interesting for 
presenting the original shell, although the shell usually splits 
away and leaves the cast, when an attempt is made to work it 
out. The Dayton limestone is also exposed some distance east 
of here, on the Philips farm (locality 28), in the bed of the creek 
which follows the railroad on its southern side. Here slabs 
sometimes contain Pentamerus in abundance. The Clinton is 
well exposed beneath. The upper portions are ferruginous, 
either sandy and stratified, or at times odlitic. At one point it 
seemed possible to trace a sort of wave-marking running north 
40° west. In the light of later discoveries in the Cincinnati, 
these traces may have some value, though in themselves unsatis- 
factory. In the sandy layers the stratification is sometimes well 
marked. The Clinton is made up of very different courses, 
some of them sandy and red, others odlitic, crinoidal and deep 
red, and still others of very pure limestone and white. A course 
