598 THE ILLINOIS GLACIAL LOBE. 



about 40 feet above Fox River. Wells are usually obtained without sink- 

 ing below the river level. In the vicinity of this village rock is often 

 encountered at depths of but 15 or 20 feet. The drift continues thin south- 

 ward past Batavia, and many wells in that village enter the rock. Upon 

 passing westward from Fox River the drift increases markedly in thickness 

 within the township limits, though the elevation remains about the same. 

 Several instances of the occurrence of a buried soil were found in this 

 township and the one adjoining it on the west. The following represent 

 the deepest wells in T. 39, R. 8 E., of which sections were obtained; they 

 are all at an altitude of about 750 feet: 



Wells near Batavia, Illinois. 



In sec. 4, old soil at 120 to 126 feet, gravel at bottom. 



East part of Batavia on Muff, rock at 60 feet. 



Sec. 24, good wells at 72, 81, and 112 feet in drift. 



Mr. Carr, sec. 20, well strikes rock at 43 feet. 



Mr. Davenport, sec. 19, three wells in drift at about 100 feet. 



Daniel Frydendall, sec. 31, old soil at 80 feet; depth of well 90 feet. 



In T. 39, R. 7 E., wells are usually obtained at 40 to 75 feet, but a few 

 exceed 100 feet. The following embrace the deepest of which sections 

 were obtained: 



Wells in T. 39, B. 7 E. 



Cheese factory at La Fox; depth, 126 feet; rock at 65 feet. 



C. G. Morse, sec. 3; depth, 83 feet; no rock struck; lower half a harder till than the upper. 



Mr. Outhouse's well, north of Elburn; altitude, about 900 feet; depth, 100 feet. 



Tile factory well at Elburn; altitude, 850 feet; depth, 70 feet; old soil at 60 feet. 



C. F. Field, sec. 10; altitude, 800 feet; depth, 96 feet; rock at 85 feet. 



P. Washburn, sec. 14 ; altitude, 825 feet ; depth, 169 feet. The well is on a gravel knoll 50 feet in 

 height and penetrates: Gravel and sand, 50 feet; brown till, 97 feet; black muck, with log 

 embedded, 2} feet; yellow till, 7 feet; sand and gravel, with water, 10 feet. 



Mr. Sheets, sec. 20; altitude, 750 feet ; depth, 47 feet ; soil, with wood, at 40 feet. 



Blackberry P. O., sec. 21; well from gravel below till at 70 feet. 



F. S. Morrill, sec. 21; altitude, 750 feet; depth, 60 feet; mainly blue till. 



Mr. Killing, sec. 22; altitude, 750 feet; depth, 50 feet; rock at bottom. 



D. C. Greene, sec. 22 ; altitude, 750 feet; depth, 40 feet; wood near bottom. 



Johnson's Mound, sec. 15; altitude, 800 feet; depth, 180 feet. The well is on the slope of a knoll 

 80 feet above bordering plain. Another well passed through a bed of leaves and muck at 

 about the level of the base of the mound. Neither well entered rock. 



William Beler, sec. 17; altitude, 750 feet; depth, 46 feet; rock at bottom. 



Annis estate, sec. 29; altitude, 700 feet; depth, 66 feet; mainly blue till; wood and black muck 

 at 64 feet. Well is thought to have struck rock at bottom. 



Russell Benton, sec. 30; altitude, 700 feet; depth, 75 feet; entirely in gravel. 



In the vicinity of Kaneville, as noted above, there is a delta-shaped 

 plain of gravel formed at the western end of an esker (see PI. XIV). Near 

 the western border the gravel is but 20 feet in depth, but at the eastern 

 border, near the esker, wells 60 feet in depth do not reach the bottom. At 



