360 THE ILLINOIS GLACIAL LOBE. 



on the farm of A. Stedginan. This penetrates a few feet of yellow till, and 

 is then in a bine-gray till to the depth of 100 feet, below which is a white 

 quicksand about 80 feet in depth. Water was obtained in a gravel bed at 

 the bottom of the quicksand. 



A well on the moraine north of Allegan, sec. 11, Pine Plains Township, 

 penetrates the following beds: 



Section on moraine north of Allegan, Michigan. 



Feet. 



Yellow clay loam 8-10 



Blue-gray till , 10 



Cemented gravel 58-60 



Depth 78 



In some cases wells on the moraine in this vicinity penetrate till 35 to 

 40 feet. It is more or less oxidized, and, as a rule, is very pebbly. Below 

 the till there is usually cemented gravel. In the low belt between the two 

 till ridges north of Allegan along the line of the Lake Shore and Michigan 

 Southern Railroad wells penetrate a slight depth of till of a yellowish blue 

 color, somewhat pebbly, below which is a blue quicksand. 



Mr. H. W. Austin, an experienced well borer residing at Allegan, finds 

 that where there is till of a blue color much cemented gravel is seldom 

 encountered, but there is a loose gravel or sand, sometimes a quicksand, 

 beneath the till. When cemented gravel of considerable depth is overlain 

 by till, the till is usually more or less oxidized, even to a depth of 30 or 40 

 feet. 



East of Allegan is a till plain in which a deep boring - having the fol- 

 lowing section was made on the farm of Chauncey Palmer. It was aban- 

 doned without obtaining water or reaching the bottom of the till: 



Section in till plain east of Allegan. 



Feet. 



Yellow till 4 



Blue till, compact, with few pebbles 168 



Gravelly clay 6 



Blue till 38 



Depth 216 



There are shallow flowing wells on the till plain east of Allegan. One 

 in sec. 21, Watson Township, on the farm of A. Alexander, is 20 feet in 

 depth and penetrates slightly oxidized blue till, obtaining water in gravel. 

 One in sec. 20, Watson Township (T. 2N, R. 12 W.), on the farm of S. 



