IJsTNER BORDER OF THE GRAND RIVER LOBE. 469 



The following table represents the deepest wells and sections of drift 

 in this inner border district not previously mentioned: 



List of wells with thick d/rift. 



Feet. 



Greenville, Pa., 1 B.C. Moyer's 127 



Greenville, Pa. , schoolhouse 122 



Greenville, Pa., Dr. Leet's 120 



Greenville, Pa., Mr. Packard's 122 



Jamestown, Pa., N. E. Webb's, no rock struck 70 



Big Bend, Pa., at tavern, no rock struck 112 



New Hamburg, Pa., boring for gas in Shenango Valley 147 



Transfer, Pa., drug store, no rock struck 60 



Swamp south of Pymatuning station, no rock struck by spiles 100 



Sharpsville, Pa. (see Kept. Q ^ p. 18) 63 



Oakland No. 2, Mercer County, Pa. (.see Kept. Q', p. 115) 110 



Sharon Furnace, Pa. (see Rept. Q', pp. 118-119) 100 



Middlesex, Pa. (see Rept. l^) 136 



Hubbard, Ohio, Loveless's livery stable 146 



Hubbard, Ohio, rolling mill 140 



Near Churchill, Ohio, prospect bore for coal, no rock struck ' 100 



Churchill, Ohio, ordinary wells reach rock at 10-25 



Kinsman, Ohio, at fair ground, no rock struck. _ 137 



Kinsman, Ohio, G. W. Burrill's, no rock struck 97 



Braceville, Ohio, several wells, no rock struck 90 



Cyclone, Ohio, Thos. Richard's, south of village, no rock 100 



WEAK MORAINES. 



This district is not entirely free from morainic features, there being 

 portions of it that are strongly morainic, but on the whole the drift has a 

 nearly plane surface and no well-defined belt of morainic topography trav- 

 erses the entire district. At Corry, Pa., there are morainic features, and 

 a moraine-headed terrace leads from Corry east to Big Brokenstraw Creek. 

 This moraine does not have a well-defined continuation north or northeast 

 from Corry, but is finely developed for several miles southwestward, with 

 numerous knolls and sharp ridges 10 to 25 feet, and occasional ones 50 to 

 75 feet in height. There is a group of knolls, ranging in height from 30 

 to 75 feet, in a valley near Cook, in the southern part of Erie County, 

 occupying a tract perhaps one-half mile square. A mile or so northwest 

 of Cook is another cluster fully as large, situated on the slope of the 

 valley. These knolls are at the southwestern end of the morainic belt. 

 Southwest from this locality, in Crawford and Mercer counties, there is a 

 general absence of morainic features on the uplands, but in several of the 



' The Shenango, at Greenville, is flowing on a rock bed, the deep channel being east of the stream. 



