FAYETTE COUNTY. | 441 
which the water constantly flows. The well at the fair ground, near 
Washington, is a good illustration of the principle of the artesian well. 
It was sunk through a stratum of blue clay to one of sand, from which 
the water rises and comes to the surface. About one mile distant isa 
well on the farm of Mr. D. Waters, in which the water rises to within six 
feet of the surface of the ground. The use of a level shows that the ground 
rises about the same number of feet between the fair grounds and Mr. 
Waters’s, and this person must dig as much deeper to penetrate to the 
water bearing stratum of sand. The water stands on the same level in 
Mr. Waters’s well as at the fair grounds. 
THE BOUNDARY LINE O® CINCINNATI GROUP. 
The line separating the blue limestone and the Clinton white lime- 
atone is easily distinguished. It may be distinguished in all the streams 
in the western part of Clinton county, which all cut abruptly through 
the Clinton and into the ‘blue limestone. I shall here indicate where 
that line runs, beginning just without the county, on Anderson’s Fork, 
near Ingall’s Dam, where the upper beds of the Cincinnati Group and 
the Clinton formation are seen at one glance. To the west a mile or 
two, on Cliff Run, as well as oa Buck Run, the Clinton stone may be 
seen forming low cliffs, cut off from the ma n body of the formation ; but 
the true line is on Anderson’s Fork, as mentioned above. On Todd’s 
Fork, just above the crossing of the Lebanon road, near the line which 
divides the surveys, 1554 and 1556 (H. Gates), the same formations are 
seen in juxtaposition. Further south, on Lytle’s Creek, was not seen; 
' but on the next stream, Cowan’s Creek, the line of the Clinton sweeps 
around to the east and appears above the village of Antioch, on the farm 
of Mr. James Gregory, and does not here rise above the surface of the 
earth. The next point in the line is back to the west, about one mile 
north-east of Martinsville, where it is quarried, and then its next ap- 
pearance is at a point about one mile south of Farmer’s Station, on the 
Cincinnati and Marietta Railroad, on a tributary stream of the East Fork of 
the Miami. The last point at which the blue limestone is seen on the Hast 
Fork of the Miami, is near Pitzer’s meeting-house, on the edge of White’s 
survey. The very interesting fossils of the blue limestone of the Cincin- 
nati Group will be figured in volumes of this survey, devoted to the sub- 
ject of paleontology. | 
THE CLINTON FORMATION. 
This is seen on Anderson’s Fork, at Oglesby’s quarry, and in Todd’s 
Fork from the point of its first appearance, near the Lebanon road, to 
