DARKE COUNTY. 501 
situated upon a large kame of detritus, heaped up in a great glacial 
valley. Moreover, Greenville being elevated about thirty feet higher 
than the creek, the present bed of Greenville Creek must lie sixty-five 
feet above its ancient rocky channel. The indications, too, are such 
as to warrant the belief that the junction of the two streams centered 
somewhere beneath the present location of the town, or a very little to 
the east. As to the truth of this conclusion, the most forcible evidence 
is Gard’s quarries, which stand up there a solitary rocky pier, dividing 
the two great currents of Drift, which, ages ago, carved out this rocky 
basin with the channels of the two streams. 
In three instances, within the county, the streams have cut down 
through the superficial material to their former beds. At Bierleys, 
Greenville Creek runs over the Niagara limestone for a quarter of a mile. 
Mud Creek, at Weaver’s Station, flows over the same rock about half that 
distance. And Stillwater Creek, in Wayne township, a a short distance 
east of Webster, reveals a smaller extent. 
The excavation above described: has evidently been the work of gla- 
ciers. Though the dip of the rocks at Gard’s would, apparently, indicate 
a fold, yet the universal horizontality of the beds elsewhere, together 
with the glacial evidences, supports the first supposition. No other 
agency could have accomplished it. Upon the upper stratum of rock 
at Gard’s quarries, which happened to be sufficiently hard to retain 
them, excellent examples of glacial strie havebeen preserved. The 
upper surface, at a fresh exposure, likewise showed,itself well smoothed 
and polished. These strie bore a direction of about S. 5° W. The 
Niagara limestone, at Weaver’s Station, also shows some faint grooy- 
ines bearing in about the same course. These, | may now remark, 
are the only glacial markings upon the surface of the embedded rocks 
that have been observed in the county. The upper layer of limestone, 
at Bierley’s quarries, is too soft to retain them, had any impressions 
ever been made, and at Webster’s no opportunity was afforded to view a 
freshly exposed surface. But in the excavation of the public cistern, 
before spoken of, as, also, in the digging of wells, etc., numbers of very 
finely striated bowlders have been taken from the lower blue hard-pan or 
bowlder clay, seemingly to indicate that the same great force which 
grooved out this rocky basin, was identical with that which ground and 
polished the bowlders, and transported them where they now are found. 
The superficial deposits of Darke county present about the same gen- 
eral character as the Drift elsewhere in this section of the State, con- 
sisting of a mass of clay, sand, and gravel, sometimes stratified, lying in 
regular, separate layers, and at others, jumbled and mixed together in 
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