WELLS OF PIATT COUNTY, ILLINOIS. 703 



feet in depth, water being obtained in beds of sand and gravel associated 

 with till. A prospect boring for coal at this village entered rock at 95 feet. 

 The section of the drift penetrated appears on page 230. 



In the vicinity of Homer wells are usually obtained at about 30 feet, 

 and rock is entered at 90 feet. South from Homer, near the southeast 

 corner of the county, wells are usually obtained at 20 to 40 feet, but occa- 

 sionally reach a depth of 1 00 feet without entering rock. 



At the village of Philo, which is situated on the crest of one of the 

 ridges of the Champaign system, a well reached a depth of 171 feet with- 

 out entering rock (see p. 235). 



Several wells in the vicinity of Philo reach a depth of 100 feet without 

 entering rock. 



At Mahomet several wells obtain water at 45 to 50 feet. A well in 

 this village at D. Mc Arthur's has the following section: 



Section of McArthur well at Mahomet, Illinois. 



Feet. 



Gravel _ 7 



Pebbleless clay 3 



Bro wd and gray till 32 



Black muck 2 



Hard till ; 08 



Total depth 100 



A well at Jonas Lester's, a half mile south of Mahomet, passes through 

 a black soil below till at about 36 feet. . The section of an exposure in 

 the Sangamon bluff south from Mr. Lester's appears on page 216. 



A well at George Frankenburgher's, 2 miles east of Mahomet, at an 

 altitude 60 feet higher than the village, reached a depth of 200 feet with- 

 out entering rock. About 4 miles southwest from Mahomet, on ground 

 no higher than the village, records of three wells were obtained which 

 penetrate over 200 feet of drift, mainly blue till, without entering rock 

 (see pp. 219-220). 



PIATT COUNTY. 

 GENERAL STATEMENT. 



Piatt County is situated in the east-central part of the State, immedi- 

 ately west of Champaign County, and has an area of 440 square miles, 

 with Monticello as the county seat. The Sangamon River leads southwest- 

 ward through the central portion of the county, and is the only stream of 



