586 THE ILLINOIS GLACIAL LOBE. 



The other wells show a rise scarcely so high, though their mouths are at 

 an equally low elevation. The well 70 feet in depth has a strong flow of 

 chalybeate water. The strongest flow is from the cheese factory well — 60 

 gallons per minute. The crust of rock reported in these wells is perhaps a 

 ferruginous incrustation of gravelly drift, such as is often formed above 

 water beds in the drift. In the deep artesian well a strong flow of water is 

 reported from a depth of 800 feet as well as from near the base of the drift. 

 The collecting area for the shallow wells is thought to be in the portion of 

 the Valparaiso moraine west and north of Palatine, which attains an altitude 

 of 100 to 120 feet above the station. The superficial drainage is very poor 

 along this moraine, and much of the water must evaporate or find outlet 

 by underground passages. The collecting area seems adequate for supply- 

 ing the flowing well district. The following section of a well at the flax 

 mill will illustrate the character of the deposits penetrated in each of the 



wells : 



Section of well at Flax Mill, in Palatine, Illinois. 



Feet. 



Yellow till 10-12 



Blue till 25-30 



Water-bearing gravel 3-4 



Blue till, with occasional thin beds of sand and gravel, yielding water 125 



The lower portion of the till is said to be more sandy than the upper. 

 In the north part of Palatine Township there are several wells ranging in 

 depth from 80 to 165 feet, which show strong hydrostatic pressure. On the 

 lowest ground they occasionally rise within 5 or 10 feet of the top, and in 

 two or more instances they overflow. 



In the township adjoining Palatine on the south (T. 41, R. 10 E.) 

 flowing wells have been obtained along a tributary of Salt Creek in sections 

 23, 25, and 26, at depths of 27 to 45 feet. Being so shallow the)' differ but 

 little from springs which occur in that vicinity. A few deep wells have 

 been made in the western part of this township. The following section is 

 from one in its northwest corner, at an altitude about 825 feet: 



Section of a well in northwest part of T. 41, R. 10 E. 



Feet. 



Yellow till 10-15 



Blue till 125 



Black soil * 



Sandy till 50 



Gravel with water 2 



Total depth 195 



