MAIN MORAINIC SYSTEM IN THE GRAND RIVER LOBE. 457 



is commonly met with, the rock usually being struck at 30 feet or less on 

 the uplands. A well at Mr. Hosier's, 2 miles northeast of Townville, in a 

 lowland tract near the head of Muddy Creek, has 126 feet of drift. 



White notes^ a well with 130 feet of drift on East Sugai- Creek in 

 southeastern Crawford County near the outer border of the moraine. The 

 altitude of the well mouth is 1,260 feet. Several other wells along Sugar 

 Creek between the moraine and Coopertown penetrated 100 feet or more of 

 drift. The well mouths are, as a rule, but 15 to 20 feet above the creek. 

 At Coopertown the di-ift extends about 60 feet below the flood plain of the 

 creek, and at the mouth of Sugar Creek near the Venango Infirmary, at a 

 level about 1,000 feet above tide it extends but 30 feet below the present 

 flood plain, as shown by several wells. White reports^ a well with 80 feet 

 of drift on West Sugar Creek near Sugar Lake. 



In the valley of French Creek several wells show a large amount of 

 drift. White mentions' a well 4 miles below Meadville, which penetrated 

 285 feet of drift and did not reach rock, though 265 feet below the present 

 stream and at the bottom only about 800 feet above tide. Carll in several 

 places'* refers to a well near that locality (which is perhaps the same one) 

 by which he was enabled to fix the level of the rock floor at 800 feet 

 above tide. 



A well at Valonia, a suburb of Meadville, sunk by the Meadville Dis- 

 tillery Company in the autumn of 1891, shows a larger amount of drift than 

 has been brought to notice elsewhere in the district covered by the Grand 

 River lobe. It was reported by Xeno Putnam, of Harmonsburg, Pa., who 

 obtained the statistics from the well driller. The well is about one-fourth 

 mile above the junction of French and Cussewago creeks and midway 

 between the two streams. Its mouth is about 8 feet above French Creek, 

 or 1,075 feet above tide. The following is the section as reported. Prob- 

 ably Nos. 1 and 2 are alluvium. 



' Second Geol. Survey Pennsylvania, Rept. Q*, p. 180. 



2 Ibid., Rept. Q*, p. 34. 



"Ibid., Rept. Q*, p. 167. 



nbid., Rept. I^ pp. 356, 357, 358, 359. 



