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 as many 
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 Prehle. 
