242 THE ILLINOIS GLACIAL LOBE. 



County, as previously noted. This feature also may be seen on the Dun- 

 hip sheet, the point of emergence being near Lawn Ridge. The Blooming- 

 ton ridge crosses the Illinois River just above the city of Peoria and passes 

 southeastward across northern Tazewell County with an elevated semi- 

 morainic tract on its eastern border, extending into western Woodford 

 County. In northwestern McLean County, immediately east of the Macki- 

 naw River, two prominent ridges are found in place of the one ridge farther 

 west. They are closely associated and lead across the county in a curving 

 course bearing south of east in the western portion and north of east in 

 the eastern portion. The ridges are more closely associated in the eastern 

 than in the western portion of the county, but nowhere occupy a belt more 

 than 10 miles in width. In the eastern portion the width is not more than 

 6 miles. The plane tract between them is only 1 or 2 miles in width. In 

 Ford County a slight reentrant angle is formed immediately north of Gib- 

 son, and the morainic system which bears northeastward in the western 

 part of the county changes abruptly to a southeastward course in the cen- 

 tral portion. The inner border of the reentrant portion extends northward 

 as far as Chatsworth and Piper. From this reentrant angle the outer border 

 leads from Gibson southeastward across northeastern Champaign Count}', 

 passing near Rantoul and Gifford, and enters Vermilion County about 3 

 miles northwest of Fithian. Its course is thence directly eastward across 

 the county into Indiana, passing a couple of miles north of Danville, Illinois. 

 It is very clearly defined on the Danville topographic sheet. In Warren 

 County, Indiana, its course changes to north of east, following nearly the 

 north bluff of Wabash River to Pine Creek Valley, near Williamsport. The 

 moraine here swings northward and is traceable as far as eastern Benton 

 County, where it dies away in a gently undulating plain. This system is 

 overridden by a series of weak bowldery moraines of the late Wisconsin 

 series in northern Warren and southern Benton counties, but is not greatly 

 obscured along the line of the outer belts. Greater obliteration apparently 

 occurred a few miles back from the late Wisconsin border. However, the 

 Bloomington system apparently finds its continuation in a belt of very thick 

 drift which leads from Benton County, Indiana, southeastward across Tip- 

 pecanoe, Clinton, Boone, and Hamilton counties, and thence eastward into 

 Ohio. But this belt is outside the territory embraced in the present report. 

 Returning to the reentrant angle in Ford County, Illinois, the inner 

 border of the Bloomington system is found to pass southward from Piper, 



