IVAVERLY SERIES OF CENTRAL OHIO 23 I 



partly in the bank of the creek and partly by the roadside, where 

 85 feet of buff arenaceous shales to thin bedded sandstones are 

 shown. This gives about 115 feet for the thickness of the for- 

 mation, which is capped by the Coal-measure conglomerate 

 where the road and creek emerge from the woods. In sections 

 farther to the south and southeast the top of the Logan sand- 

 stone is defined by the base of the sub-Carboniferous limestone, 

 named by Professor Andrews the Maxville limestone. 



Charles S. Prosser. 

 Columbus, Ohio, 

 December, 1900. 



