284 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



The ingress of water prevented the deepening of the well, and the wall 

 was commenced on the driftwood at its bottom. A well at South Milan, in 

 eastern Ripley County, 54 feet in depth, did not enter rock, though quar- 

 ries are opened in that vicinity at about the level of the well mouth. The 

 following is a section of the well made by the railway company : 



Section ofraihvay well at Smith Milan, Ind. 



Feet. 



1. Light-colored clay 10-14 



2. Yellow clay with flint, gravel, and fossil corals 12 



3. Blue glacial clay 12 



4. Coarse yellow sand with recent shells and water 8 



5. Blue clay and muck containing roots and limbs of trees , 8 



Total - 54 



Statistics concerning wells were obtained at several villages on the 

 uplands in these southeastern counties of Indiana, as follows : At Versailles, 

 the county seat of Ripley County, wells are obtained at depths of 18 to 25 

 feet in the upper part of the limestone. At Osgood they are usually 

 obtained near the base of the drift at depths of 9 to 15 feet. Occasionally 

 they are drilled to a depth of 100 feet or more in the northern part of 

 Ripley County. At North Vernon, in Jennings County, wells are obtained 

 usually at depths of 12 to 35 feet, the majority being about 25 feet; they 

 enter the rock a few feet. At Charlestown, formerly the county seat of 

 Clark County, many wells are obtained at a depth of 3u to 35 feet, usually 

 in the Corniferous limestone. A few, however, reach this depth without 

 entering rock. In wells where drift 25 to 30 feet in thickness is penetrated 

 it is common to find a blue mud carrying tree trunks or small pieces of wood 

 near the base of the drift. Rock is ordinarily struck in this village at about 

 12 feet. There are four very strong springs within the corporate limits of 

 the town, which are used by many of the residents. At Scottsburg, the 

 county seat of Scott County, wells are usually obtained at 25 to 35 feet or 

 less. A gas-well boring near the railway station penetrated 47 feet of drift, 

 as follows: 



Section of drift in gas-ioell horing at Scottsbwg, Irid. 



Feet. 



1. Yellowish white clay, nearlj^ pebbleless 15 



2. Sand 5 



3. Blue till 27 



Total 47 



