5 
Pre-Wisconsin Drift in Finger Lake Region 
of drift are superposed, the distinctions may be more accurately 
: recorded; but good sections of this imbrication are rare. Some 
i contact sections, all from the Mississippi valley, are shown in 
Chamberlin and Salisbury, Geology, vol. iii, pp. 385-388. 
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 
Fig. I. Southern portion of Bluff Point viewed from the east. The break 
or terrace in the frontal slope is a cusp which apparently correlates with Fair- 
child’s Wayne overflow stage of glacial lake Hammondsport. 
is present; there is slight evidence of bedding; the highly weathered 
condition of the drift, and the great amount of erosion it has suf- 
fered, are its conspicuous characteristics. 
The earlier drift in New Jersey is thus described: ‘‘The outer 
and older drift is deeply weathered from top to bottom, even where 
Loc. cit., pp. 228, 229, 235. 
I 
