OUTER MORAINE OF THE MIAMI LOBE. 325 



have been made in prospecting- for gas. The first boring, the altitude of 

 which is about 850 feet, penetrated 75 feet of drift, nearly all sand and 

 gravel. No record of the other wells could be obtained. 



Between the West and the East Whitewater rivers, in Wayne County, 

 the record of but one well in which the rock is reached was obtained. This 

 well is at Centerville, where a natural-gas boring penetrated 176 feet of 

 drift, mainly till. A little gravel was passed through near the surface. The 

 altitude is about the same as the Centerville station, 995 feet above tide. 

 Water wells in this district often go down about to the level of the bordering 

 valleys without entering rock. 



E. R. Quick, of Brookville, has collected the following information 

 concerning the drift in the gas wells in the vicinit}- of that city. A well at 

 a warehouse east of the river, near the forks of the Whitewater, altitude 630 

 feet above tide, penetrated 135 feet of drift, all sand and gravel. A well 

 at the Franklin County Infirmary, west of the river, penetrated about 140 

 feet of sand and gravel and struck rock at about 2 feet higher altitude than 

 at the warehouse. At Mr. Brocker's, in Brookville, west of East Fork, at 

 an altitude also about 630 feet above tide, a well has 135 feet of sand and 

 gravel. Mr. Kimball's well, near the station in Brookville, altitude 666 feet 

 above tide, penetrated 160 feet of drift, thought to be mainly gravel. 

 About 4 miles below Brookville a gas boring at an altitude of 600 feet 

 penetrated 154 feet of sand and gravel l^efore striking rock. 



BOWLDERS. - 



There are not many surface bowlders associated with this moraine or 

 the inner border tract, but their occasional occurrence on the surface in 

 places where there has been scarcely any erosion distinguishes this moraine 

 and the district north of it from the older drift tract toward the south, on 

 whose uplands the bowlders are concealed by silt. 



One very large gneiss bowlder on Mr. Perrine's land, near the "Rock 

 schoolhouse," about 3 miles southeast from Lebanon, was mentioned by 

 Orton.-^ It measured 17 by 13 by 8 feet, and slopes outward at the base as 

 though still larger under ground. Near the road between Waynesville and 

 Hai'veysburg, on the elevated uplands, the writer observed a bowlder about 

 8 feet in diameter and 3 to 4 feet high. By far the largest transported rock 

 mass ever reported from Ohio is that which Orton mentions in his report 



1 Geology of Ohio, Vol. Ill, p. 339. 



