764 THE ILLINOIS GLACIAL LOBE. 



A coal shaft at Mascoutah is reported in the Geology of Illinois to 

 penetrate the following beds of drift: 



Section of coal shaft at Mascoutah, Illinois. 



Feet. 



Soil and clay 2(1 



Sand 6 



Blue, gray, and red clay 50 



Coarse sand with wood 6 



Total drift 82 



At Rentchler wells enter rock at about 40 feet, but on the drift ridges 

 between that place and Wilderman two wells are reported to have reached 

 a depth of 85 feet without entering rock. 



The following section of thick drift is reported in the Geology of 

 Illinois. The boring was made in sec. 20, T. 1 S., R. 6 W.: 



Section of a boring in sec. 20, T. 1 S., R. 6 W. 



Feet. 



Soil and yellow clay 14 



Keddish brown gravel and sand 28 



Bine clay 83 



Total drift 125 



In the vicinity of Freeburg and Smithton rock is entered in the deeper 

 wells at about 25 to 30 feet. The upper 5 or 10 feet is a loess or pebble- 

 less silt, and the remainder is a brown clay containing few pebbles. There 

 appears to be but little typical till in this locality or, for that matter, in any 

 part of the county west and south from Belleville. 



At Lementon a coal boring reported in the Geology of Illinois has the 

 following section of drift: 



Section of drift beds in a coal boring at Lementon, Illinois. 



Feet. 



Soil 3 



Yellow clay 14 



Sand and gravel 1 



Blue clay 20 



Clay resembling soil 1 



Blue and yellow clay 11 



Red and yellow sand 1 



Total drift 51 



On a drift ridge southwest of Lementon a well made by Mr. L. Her- 

 mann reached a depth of 65 feet without entering rock. The upper 23 feet 

 was mainly till: the remainder sand and gravel. 



