Stone.] 456 [March 3, 
and North Windham. It then developes a double line of discontin- 
uous plains and ridges extending southward through the western 
part of Windham and across Gorham into Searboro. Systems XXIV, 
XXV, XXVI and XXVII all meet in the vicinity of Saco and 
Scarboro, and it is difficult in that region to distinguish between 
them. . 
Length of system about 30 miles. 
XXVI. Bethel— Saco River System. 
This extends from the Androscoggin Valley in Bethel, down the 
valley of Crooked River, expanding into kame-plains south of Water- 
ford. At the mouth of Crooked River, the distinction between the 
kames and the valley drift is well defined. The river, where it flows 
into Sebago Lake, has filled up the lake for a long distance with a 
- delta of valley drift, and all river deposits must always have gone the 
same way,— straight ahead into the lake. A series of reticulated 
ridges leaves the valley proper and runs south-westerly past the 
foot of the so called Bay of Naples and disappears in the deep bay 
which forms the north-west angle of the lake. This bay is eredi- 
bly reported as four hundred feet deep, and as the lake is two hun- 
dred and forty-seven feet above the sea, it must therefore occupy 
a true rock basin. Two or three miles from where they run into 
the lake the kame-plains reappear, not far north of the mouth of 
North-west River, and as a broadening series continue along the 
west shore of the lake and thence along the east side of the Saco 
River to Buxton or beyond. Near the south end of Sebago Lake, 
this system sent off a tongue of kame-plains south-easterly into Stan- 
dish, which plains end on the east in a steep bluff beyond which is 
ordinary till. These plains formed a dam across the old channel of 
the Presumpscot, which ran in a straight line from the present foot of 
the lake south-easterly to near Saccarappa, and they forced the river 
to its present outlet, which is seven miles to the north-east of the foot 
of the lake. The level of the lake is at least one hundred feet higher 
than it would be but for this dam. 
Length 65 miles. 
XXVI a. Naples Kame. 
This extends from near Sebago Lake northward along the west 
side of the “ Bay of Naples” or Brandy Pond. About one mile north 
of Naples Landing it runs into Long Pond and can be traced at 
intervals in the lake as far north as Bridgton Landing. 
Length 13 miles. 
