EDGAR, FORD, AND CHAMPAIGN COUNTIES. 275 



The purity of the white water-bearing quicksand which underlies the Drift 

 calls to mind the character of the St. Peters sandstone at its outcrop in La- 

 Salle county, in which region it supplies several large artesian wells. The 

 southern continuation of the anticlinal axis, which brings this rock to the sur- 

 face at that point, would pass not far from Champaign; and it is altogether 

 probable that the aforesaid quicksand is really a part of the disintegrated out- 

 crop of that bed distributed over the bottom of the great channel, which must 

 have exposed it at some point in this region. It is also probable that the 

 water which fills the quicksand comes from the edge of this bed. 



