MODIFIED DRIFT ALONG CONNECTICUT RIVER. 23 
road has cut through a narrow spur of this terrace, which escaped erosion 
by water. Here the alluvium of the main valley has been excavated into 
secondary terraces 
by Bog brook. In 
R. 865. 
Moraine. 
880. 
fo] o) 
om a 
a rs) 
ie) 
ay 
a 
E. 
the south part of ™ Z pee 
a 50 ft. 
Stratford, and in ------- re. : Fe an secnaae above sea. 
Northumberland, Fig. 2.—SECTION IN BRUNSWICK AND STRATFORD. 
the meadow ox fins Length, § of a mile. 
terval occupies more space than the terrace, which has its greatest 
extent in the level, swampy plain west of Groveton Junction. In Maid- 
stone, for two miles north from Guildhall, low hills on the west side of 
the valley hem in extensive swamps, which have been scantily filled with 
alluvium of nearly the same height with the river terrace. 
Deltas. At Lancaster the upper terrace of Connecticut river is only 
15 or 20 feet above the interval. The only higher modified drift has 
been brought down by tributaries. Part of Lancaster village is built on 
one of these deltas, formed by Israel’s river on its south side, 50 feet above 
the terrace of the main valley. This delta sloped rapidly westward, and 
formerly occupied the whole area of the village; a portion of it, 20 feet 
lower than the former, remains at the cemetery opposite the court-house. 
Similar deposits also occur two miles south-west from Lancaster, and on 
John’s river. 
Between South Lancaster and Fifteen-miles falls the broad river-plain 
is unterraced. It seems probable that a lake existed here while the origi- 
nal high plain northward was being deposited. When this was channelled 
out by the river, so as to leave only terraces as we now see them, the 
materials excavated were sufficient to fill up the lake. It would be inter- 
esting to know the depth of the stratified drift in this basin; it is proba- 
bly deeper than the height of the highest modified drift northward above 
the river. 
Kame-like materials of small extent were noticed at North Stratford, 
forming the high bank on the east side of the railroad, one fourth mile 
south-east from the depot, and in Guildhall, about two miles north from 
Lancaster bridge. A remarkable moraine of granite boulders occurs in 
Stratford, covering a large area of hillside just above the upper terrace, 
one mile south from Beattie’s station. Two miles north-west from 
