THE VALPARAISO MORAINIC SYSTEM. 367 



On the elevated tract north of Pawpaw River, hi Lawrence, Hartford, 

 and Arlington townships (T. 3 S., Rs. 15 W. and 16 W., and T. 2 S., R. 15 W.), 

 a considerable portion has but 6 or 8 feet of till, beneath which is dry sand 

 or gravel. In some cases wells are sunk 100 feet in this sand and gravel 

 before reaching water, but the majority of them obtain water at 40 to 50 

 feet. On the elevated land immediately north of the village of Lawrence 

 there is much sand at the surface. Wells are often 20 to 40 feet in sand. 

 In some places the sand is underlain by 10 to 20 feet of bluish till, and this 

 in turn by dry sand or gravel, becoming- water-bearing toward the bottom; 

 beneath this lower sand is a blue till of various depths. 



Wells in southern Arlington Township, near the northern part of the 

 elevated tract, are frequently 80 feet and occasionally 160 feet in depth. 

 A well in sec. 23, 162 feet in depth, penetrates: 



Section of well in sec. 23, Arlington Township, Van Buren County, Michigan. 



Feet. 



Keddish-brown till 40 



Quicksand 10 



Blue-gray till 110 



Gravel 2 



Total 162 



In the same section is a well 80 feet in depth, which penetrates the 

 following beds: 



Section of well in sec. 23, Arlington Township, Van Buren County, Michigan. 



Feet. 



Dry sand 40 



Cobble and gravel 15 



Sand of gray color, streaked with red, containing limestone concretions 25 



Total 80 



As a rule, there is 12 to 15 feet of reddish-brown till above the sand 

 and occasionally 40 to 50 feet, but in places it is wanting entirely, as in the 

 above section. A well in sec. 20 has the following section: 



Section of iv ell in sec. 20, Arlington Township, Van Buren County, Michigan. 



Feet. 



Yellowish-brown till 10 



Cemented gravel - 8 



Dry sand and gravel, with cemented gravel near bottom 35 



Brownish till, with thin beds of cemented gravel and quicksand 30 



Water-bearing gravel 2 



Depth 85 



