i 
Pleistocene Geology of Moravia Quadrangle 371 
! north from Freeville. The kames of this region have already been 
: given a place in the literature of glacial geology While the 
I kames here are conspicuously developed, nevertheless they are 
I no more typical than are those formed northward in Fall Creek 
j[i valley about McLean. Both well records, and sections exposed 
1 in excavations, reveal the constant presence of water in the genesis 
i of this drift. Numerous kettle holes are suggestive of a stagnant 
[ condition of detached portions, at least, of ice. The distorted 
1 layers noted in some sections suggest either slight readvances of 
t the ice, or slumping, following the accumulation of this washed 
1 drift. 
Bearing in mind the control exercised by the Cayuga valley 
on the lobation of the ice-front, we are able to understand how 
I this mature Fall Creek valley is so largely filled with drift in 
I the area between McLean and Freeville. For the sake of empha- 
‘ sis in this relationship of controlling-topography and position of 
t the ice-front in this area it is assumed that the general direction 
( of the Fall Creek valley from McLean towards Ithaca may have 
I been coincident, for a time at least, with the front of the ice along 
I the eastern part of the Cayuga lobe. In this relationship we are 
I ignoring minor tongues which were encouraged by the lesser details 
I of topography. The existence of these minor tongues has 
I tended, it is evident, to facilitate the accumulation of this washed 
i drift in the region under discussion. Extending southeastward 
from Freeville is the Dryden valley which was occupied by a 
dependency of ice that gradually shortened in length as the general 
front of ice moved northward. That Dryden valley continued to 
be a factor in the outline of the ice-front even after it had ceased 
to be occupied by a tongue of ice is evident from the discussion 
already given of the valley loop which reaches southward from 
the vicinity of George Junior Republic (p. 354). This loop 
marks a static condition of ice showing that for a considerable 
time the general front of the glacier, approaching Ithaca from 
the vicinity of McLean, was convex toward the Dryden valley 
but did not extend into it. 
Because of such a relationship then, a condition of slackened- 
ice-front drainage obtained during the retreat of the ice in the 
McLean-Freeville region. Observing the relief of the region 
R. S. Tarr: Phys. Geog. of New Tork State (1902), fig. 68. 
