936 



GEOLOGY OF OHIO. 



E. AMES LIMESTONE. 



Two analyses of this excellent limestoiie are given. The first sample 

 was taken from the stock pile of Ogden Furnace, and the second from the 

 outcrop of the stratum on the land of L. D. Linscott, Trimble towasoip, 

 Athens county. The analyses fairly represent this stratum. It is cer- 

 tainly the purest in composition of the limastones of the Hocking Valley. 



Calcium carbonate 



Magn esi um carbonate 



Iron and alumina 



Manganese oxide 



Silioioua matter 



Iro», alumina, and manganese 



94.18 

 1.02 

 1.26 

 1.18 

 2.23 



Totals. 



99.87 



91.71 

 .72 



4.51 

 2.67 



99.61 



F. COENIFEROUS LIMESTONE. 



Two analyses of the Columbus or Corniferous Limestone are introduced 

 here. The samples were both taken from Smith and Price's quarries, two 

 miles west of the city, and from the particular course called the "smooth 

 rock." The first analysis represents the best grade of the limestone, 

 and shows this variety to be equal in purity to any limestone of the 

 State. The second sample represents courses that lie at a lower level in 

 the quarry : 



