THE VALPARAISO MORAINIG SYSTEM. 365 



a well which was in process of boring- at the time of ray visit shows the 



following section : 



Section near Columbia Station, Michigan. 



Feet. 

 Yellow sand 20 



Soft blue clay, apparently pebbleless 18 



Bluish sand, exceedingly fine 140 



Depth 178 



This sand is so fine that it can not be screened by the pump strainer, 

 and renders the water unfit for use. 



In the vicinity of Great Bear Lake, south of Berlamont Station, there 

 are several wells 100 feet or more in depth. One on a hill three-fourths 

 mile west from the north end of the lake passes through 100 feet of dry 

 sand and gravel, then enters water-bearing sand to a depth of 16 feet. 

 Another south of the lake in western Bloommgdale Township was dug 

 100 feet through sand and gravel without obtaining water. A well south- 

 west of the lake, in sec. 25, Columbia Township, on a hill rising 100 feet 

 above the lake, is 125 feet in depth and largely in dry sand and gravel. 

 Between Great Bear Lake and Bloomingdale wells are sunk mainly in till, 

 both yellow and blue, but are only 40 to 60 feet in depth. 



A well 2 miles south of Bloomingdale, on J. G. Miller's farm, is 110 

 feet deep, passing through blue-gray till nearly the whole depth. As a rule 

 Bloomingdale Township is underlain by till to an average depth of 40 feet, 

 the only notable exception being the eastern tier of sections, where wells 

 are largely in sand and gravel. This tier of sections is more elevated than 

 the remainder of the township. 



A well at Mr. Merrifield's, 1J miles north of Bloomingdale, presents the 

 following exceptional section: 



Section in well near Bloomingdale, Michigan. 



Feet. 



Soil and dry yellow sand 20 



Quicksand - 14 



Blue-gray till 8 



Cemented gravel 12 



Yellowish till 20 



Quicksand of gray color 6 



White sand with water 10 



Water-bearing gravel 1 



Depth 91 



A well 3 miles south of Gobies, in Waverly Township, on a prominent 

 point called Covey Hill, is 109 feet in depth, and the entire section is made 



