PRE-WISCONSIN DRIFT IN FINGER LAKE REGION 573 
the Mississippi valley, are shown in Chamberlin and Salisbury, 
Geology, Vol. III, pp. 385-88. 
Descriptions of old drift in western Pennsylvania and in New 
Jersey are perhaps more pertinent to the New York area. The old 
deposits in Pennsylvania, described by Leverett, are very stony, the 
pebbles usually showing water action; the bowlders are small and 
mostly of local origin; only a small amount of clay is present; there is 
Fic. 1.—Southern portion of Bluff Point viewed from the east. The break or 
terrace in the frontal slope is a cusp which apparently correlates with Fairchild’s Wayne 
overflow stage of glacial lake Hammondsport. 
slight evidence of bedding; the highly weathered condition of the 
drift, and the great amount of erosion it has suffered, are its con- 
spicuous characteristics.* 
The earlier drift in New Jersey is thus described: ‘‘The outer and 
older drift is deeply weathered from top to bottom, even where it has 
a thickness of thirty feet, the greatest thickness it is known to possess. 
Its stones, so far as they are of decomposable rock, are decayed. 
t Loc. cit., pp. 228, 229, 235. 
