518 GEOLOGY OF OHIO. 



Guelph beds. The water of these springs is consequently charged with 

 carbonate of lime and magnesia extracted from the rock, as well asjnany 

 other mineral properties derived from the clay. Hence mineral springs 

 are produced, and some of them are as highly charged with mineral 

 matters as the celebrated Cedar Springs, of New Paris, in the adjoining 

 county of Preble. 



