302 



GEOLOGY OF OHIO. 



ten inches, and is very valuable for all uses. It is a part of the Water- 

 lime. Stone of the same kind is found in Bogg's Creek, two miles from 

 the Scioto, on land of John Irwin. In Thompson township the Water- 

 lime is seen on the farms of Simon Charles and Jonathan Fryman, a 

 mile a-nd a quarter west of the Scioto, at the road-crossing of Fulton 

 Creek. It is in thin, blue beds, the same as at Cone's mill, and has been 

 used somewhat in cheap foundations. Bogg's Creek, where it enters the 

 Scioto, is on the Waterlime. 



General Section of the Limestones of Lei, \ ware County, with their Supposed 

 Equivalents in New York State. 



The Drift. — Several interesting features pertaining to the Drift, proving 

 the glacier origin of this deposit and all its features, were first noticed 

 in Delaware county. Allusion has already been made, under the head 

 of Surface Features, to tb" valley of the Scioto, and the contrast its upper 

 part presents to its lower. Throughout the county generally the beds of 

 all streams are deeply eroded in the underlying rock, although their 

 banks are not constantly rocky. This fact is more and more evident to 

 the observer in traveling from the north-western part of the county to 

 the south-eastern. The north-western corner of the county, including 



