THE VALPARAISO MORAINIG SYSTEM. 371 



T. 0. Sweet, a well borer residing at Lawrence, states that wells in the 

 village of Lawrence are usually 25 to 40 feet in depth and penetrate the 

 following- beds: 



Generalised section of wells at Lawrence, Michigan. 



Feet. 



Reddish till and sandy clay ... ; 7-18 



Yellow till 3- 7 



Quicksand 9-14 



Blue-gray till at bottom. 



In some cases the quicksand extends to a depth of 40 feet or more, so 

 that its bottom is not reached. 



On the elevated land south of Lawrence there is 12 to 20 feet of yel- 

 lowish till with sandy gravel interbedded, and beneath this is a blue till 

 mixed with blue quicksand. Wells in some cases penetrate this quicksand 

 to a depth of 100 feet. 



On the outer border of the moraine, in sec. 1, Lawrence Township, on 

 the farm of Mr. Hutchins, a well 125 feet deep penetrated sand and gravel 

 its entire depth and encountered many bowlders and bowlderets. A well 

 at Mr. Whipple's, in the river valley half a mile north and about 120 feet 

 lower at the surface than the preceding, penetrates a yellow till 12 to 15 

 feet, below which is blue clay, apparently pebbleless, penetrated to a depth 

 of 25 feet. Mr. Whipple states that the valley of Pawpaw River, in 

 northeastern Lawrence Township, is underlaid by clay of a blue color and 

 also a blue quicksand. In one instance a well was driven into this quick- 

 sand 80 feet without reaching the bottom. 



A well near the border of the Pawpaw Valley, 20 feet or more above 

 it, on the slope of the moraine in the eastern part of sec. 11, Lawrence 

 Township, has the following- section: 



Section of well in sec. 11, Lawrence Township, Van Buren County, Michigan. 



Feet. 



Sand and gravel 18-20 



Blue-gray till 48 



Coarse sand and fine gravel 14 



Depth 72 



A well about 60 rods north from this, at nearly the same level, pene- 

 trated no thick bed of till, but instead alternate beds of clay and sand or 

 clay and gravel to a depth of 76 feet. 



