MISSISSINAWA MORAINE. 501 



Valley from Granville westward beyond Eaton, there being in the vicinity of 

 Eaton, on the south side of the river, several fields where 50 to 100 bowlders 

 per acre are to be seen. In the Ohio portion the moraine carries fewer 

 bowlders at the surface than in Indiana. The number of bowlders along 

 water courses and ravines traversing the moraine in the former region indi- 

 cate that the deeper portions of the drift are about as plentifully supplied 

 as the surface portion. 



The following constitute the principal records of borings obtained 

 along the line of the moraine. In many of the borings the exact thickness 

 of each of the several drift beds passed through was not noted by the 

 drillers, hence only general statements concerning the nature of the drift 

 in such wells can be made. 



At Jackson Center, in northeastern Shelby County, Ohio, a well at 

 the Carter House 80 feet in depth does not reach rock. Its lower portion 

 is through a blue-gray till. A sand bed was struck at about 30 feet, from 

 which the water supply is derived. Near Anna, Ohio, two gas borings have 

 been made, each of which penetrates nearly 500 feet of drift, the exact 

 thickness in the one nearest the village being 490 feet. The altitude of 

 the well mouth is about the same as at the Cincinnati, Hamilton and Dayton 

 Railway station in Anna (1,018 feet above tide). The rock surface stands, 

 therefore, little more than 500 feet above tide, though in a region where 

 within a few miles the rock reaches an altitude of nearly 1,000 feet. It is 

 probable that the boring was made in the line of an old valley, and the 

 course of the valley, as traced by Bownocker, was toward the Grand Reser- 

 voir near Celina.^ Many of the data by Avhich this channel was traced 

 appear in Orton's paper in the Nineteenth Annual Report of this Survey." 



Orton reported^ 428 feet of drift in a gas boring at New Berlin, a few 

 miles northwest of Anna and uear the summit level of the Miami Canal 

 (940 feet). Bownocker has also traced a channel from this point northward 

 to the Grand Reservoir. Both to the east and to the west of the line con- 

 necting these wells rock is struck at an altitude of 900 feet or more. The 

 character of the drift in the well at New Berlin is not noted. In those near 

 Anna there was till for a few feet at the surface, but the great body of the 



'Am. Geologist, Vol. XXIII, 1899, pp. 178-182. 



''Part IV, pp. 711-716. 



'Geology of Ohio, Vol. VI, p. 779. 



