small patches of stratified drift. In a swamp
near the north end of the cemetery is a curved esker with lobes
extending south and southwest. One mile north of this swamp is an area
of excessively coarse till containing boulders which range in diameter
from 6 to 10 feet and forming a low ridge separating two ravines, in
which head streams flowing in opposite directions. The area of coarse
till is bounded on the north by a long sinuous esker of coarse gravel
terminating in a flat fan, which is superposed on a field of fine
till. Associated with the esker is an interesting group of kames and
kettleholes, the largest kettlehole being distinguished by distinct
plant zones banding the sides of the depression.

North of the area of boulders, eskers, and kames just described lies a
swamp whose surface is 30 to 40 feet below the upper level of the kame
gravels. Soundings made by T. T. Giffen revealed the presence of 36
feet of peat and 2 feet of silt overlying firm sand, so that 70 feet
is the minimum estimate for the difference in level between the
surface of the gravels and the floor of the swamp.

Below the rocky cliffs which line the valley sides are boulders
brought by the ice from near-by ledges, and about one-half mile above
the head of the swamp are remnants of a terrace standing 20 to 30 feet
above the level of the stream. Although the terrace appears to consist
of till, it may conceal a rock floor which was cut by a former stream.
As the valley is followed toward Neversink Pond, the various features
of a till-coated, rock-floored valley are seen.

[Illustration: ~Fig. 6.~ Course of Still River. Dotted lines show the
preglacial channels.]

STILL RIVER

STATEMENT OF THE PROBLEM

Still River presents several unusual features, as shown in fig. 6.
Tributaries from the west and south unite at Danbury to form a stream
flowing northward opposite to the regional land slope. Near its
junction with the Housatonic, the river flows northward, whereas its
master stream half a mile distant flows southward. The lower valley of
the river is broad and flat and apparently much out of proportion to
the present stream; it is, indeed, comformable in size and direction
with the valley of the Housatonic above the mouth of the Still. The
Housatonic, however, instead of choosing the broad lowland in the
limestone formation, spread invitingly before it, turns aside and
flows through a narrow gorge cut in resistant gneiss, s