116 



PLEISTOCENE OF INDIANA AND MICHIGAN. 



southeastern part of the county many wells penetrate 50 to 70 feet of till, though shallower 

 ones are common. 



At Amboy the wells penetrate about 15 feet of till, beneath which a water-bearing gravel 

 extends to rock at 35 to 50 feet. 



At Bunker Hill a sheet of till 25 to 40 feet thick is generally passed through before water- 

 bearing sand or gravel is reached. In one gas well the drift is 68 feet, in another 84 feet; in each 

 the lower half is largely sand and gravel. A boring east of Bunker Hill in sec. 21, T. 26 N., R. 5 

 E., at an altitude 175 feet above Wabash River at Peru, penetrated 160 feet of drift, of which 54 

 feet is till and the lower 6 feet gravel. 



Cass Oounty. — At Galveston, Cass County, on ground 20 feet lower than the railway station, 

 or 775 feet above the sea, a gas boring penetrated 41 feet of drift. Rock outcrops along Deer 

 Creek west of Galveston. 



At Walton the drift is about 80 feet. At Logansport drift is lacking in the valley and is 

 very thin for some distance to the south on the uplands. 



Carroll County. — At Delphi also drift is lacking in the valley and is thin on the uplands to 

 the east and south. 



At Flora there is 136 feet of drift, mainly till. Several flowing wells near the creek differ in * 

 depth, some being but 12 feet and others 40 to 45 feet deep. In the deeper two water beds occur 

 above and below beds of blue till. There is said to be a ferruginous crust above the water beds 

 and the water is strongly chalybeate. The probable source and head of water is from the higher 

 ground south and southeast of Flora. 



Clinton County. — Two wells near Geetingsville, on a knoll at R. G. Young's, only 50 yards 

 apart, show a marked difference in material: 



Record of Young well No. 1. 



Feet. 



Sandy and gravelly clay .• 12 



Till, bluish-yellow 33 



Gravel 6 



Till, bluish-yellow 14 



Sand 6 



Record of Young well No. 2. 



Feet. 



Clay, sandy and gravelly 6 



Sand 25 



Gravel, coarse, at bottom 2 



33 



Dr. Young has a well on a level tract in the village of Geetingsville 125 feet in depth which 

 does not reach the bottom of the drift. The section was not obtained. At J. H. Brown's 

 residence, one-half mile west of Geetingsville, is a gas-yielding well with the following section : 



Record of Brown well. 



Feet. 



Till, yellow and blue 68 



Sand and vegetable material with gas; sand cemented in places 16 



Sand, with thin clay beds 40 



Gravel 2 



126 



Several flowing wells have been obtained in a valley in sec. 19, T. 23 N., R. 13 E., at a depth 

 of only 20 feet. 



At Mr. Stevenson's, about 2 miles west of Sedalia, a well was driven through 80 feet of till. 

 No sand was noted and no water obtained. Afterward a well was dug at the same spot, and 

 water was obtained in a thin sand bed at 20 feet. This illustrates the fact that the reported 

 section of a driven well is less reliable than that of a dug well or large excavation. 



At the railway station in Mulberry a well was driven, mainly through blue till, to a depth 

 of 220 feet without reaching rock. 



Tippecanoe County. — From well sections given by Gorby in his report on Tippecanoe 

 County * the following, which represent the deepest wells, are reproduced : 



1 Fifteenth Ann. Rept. Indiana Dept. Geology and Nat. Hist., 1SS6, pp. 87-93 



