706 THE ILLINOIS GLACIAL LOBE. 



Feet. 



Clay and sand i 



Gravel and clay - ■ 



Hardpan - •> 



Clay and sand ' 



Clay and gravel ^ 



Clay i 



Hardpan - ° 



Clay and gravel ° 



Quicksand " 



Sand and gravel 



Coarse gravel - 



Clay 6 



Gravelly hardpan - 25 



Quicksand - - " 



Sand and clay - ' 



Gravel - 9 



Sand. 



11 



Gravel 9 



Sand 9 



Quicksand and gravel 101 



Total depth of drift - 352 



This boring continued to a depth of 942 feet without reaching the bot- 

 tom of the Coal Measures. A boring about one-half mile farther north was 

 carried to a depth of 539 feet and penetrated only 270 feet of drift, or 70 

 feet less than that whose section is just given. 



The section of a gas well at James Barnett's, 8 miles west of Clinton, 

 also reported in the Geology of Illinois, appears on page 205. It is stated 

 that dry sand and pebbles were thrown out upon the surface by the pressure 

 of the gas which was struck at the bottom of this well. 



In the vicinity of Hallsville several gas wells have been obtained from 

 beds of gravel between sheets of till at a depth of 117 to 127 feet. The gas 

 is used in some cases to supply light and fuel for dwellings. 



At Kenney, on the low plain outside the Wisconsin drift sheet, at an 

 altitude only 650 feet above tide, a boring was sunk to a depth of 291 feet, 

 mainly through sand and gravel, without reaching the rock. 



At Waynesville, in the northwest corner of the county, on the outer 

 slope of the moraine which marks the limit of the "Wisconsin drift, the public 

 water supply is obtained from wells 150 feet in depth. 1 



In the vicinity of Wapella wells seldom obtain a good supply of water 

 at less than 65 feet, and several are 80 to 100 feet in depth. They penetrate 

 only 8 to 12 feet of surface silt and yellow till before entering blue till. 



'See Manual of American Waterworks, 1897 



