236 THE ILLINOIS GLACIAL LOBE. 



apparently referable to the Shelbyville and later sheets. Beneath this 

 depth alternating- beds of sand and clay of blue color continued 46 feet to 

 the bottom of the well. Several other -veils have been made along the 

 moraine in this county whose depths exceed 100 feet. As a rule they pass 

 through a thick bed of till before striking water-bearing- sand or gravel. A 

 similar sheet of till is passed through on the plain between the middle and 

 outer ridges in southern Champaign Count)' and -on the inner ridge and 

 bordering- plains in eastern Champaign County. A boring at Sidney on a 

 plain north of the inner ridge, made in 1884 by the Sidney Mineral 

 Company, penetrated but 95 feet of drift, as follows: 1 



Section of drift in a boring at Sidney, Illinois. 



Feet. 



Yellow clay, containing few pebbles 17 



Blue clay, containing few pebbles 18 



Pebbly blue clay 5 



Tebbly yellow clay 15 



Sand and gravel - 5 



Pebbly clay 1 35 



Total drift 95 



In northeast Douglas Count}*, and thence eastward along the moraine, 

 wells are usually but 30 to 40 feet in depth and very rarely reach a depth 

 of 100 feet. They are mainly through till, except in southeastern Vermilion 

 County, where in some cases considerable gravel is penetrated. 



A well on the north face of the Inner Ridge, a short distance east of 

 the State line, at the residence of Mr. Malone, did not reach the bottom of 

 the drift at a depth of 241 feet, and failed to obtain water. The well 

 mouth has an altitude about 6"25 feet above tide, or 160 feet above the 

 Wabash River. The following- section was furnished by Mr. Malone: 



Section of Malone' 's well near Eugene, Indiana. 



Feet. 



Pebbly yellow clay 15 



Pebbly blue clay 35 



Dry sand anil gravel 10 



Hard pebbly gray clay (probably lllinoian) 55 



Alternations of clay with sand and gravel in thin beds 125 



Total depth 240 



F. H. Bradley has published the following section of drift exposed oh 

 a branch of Johnson's Creek, near Newport, Indiana : 2 



1 For this section I am indebted to Prof. C. W. Rolfe. 

 -Geology of Indiana. 1869, p. 141. 



