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 is a 

 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 fiumber 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 OJ CINCINNATI GROUP. 



The line separating the blue limestone and the Clinton white lime- 

 stone 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 on Buck Ran, 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 Ly tie'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 East 

 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 



