MODIFIED DRIFT ALONG PINE RIVER. 147 
A conspicuous dune, blown 125 feet above the low plains, occurs two 
miles south-east from Ossipee lake on the west foot-slope of Green moun- 
tain. A track of sand-drifts, now grassed over, reaches up to this from 
the north-west; and an old pine stump, standing where it originally 
grew, shows that since the clearing of the country a portion of the dune 
seven feet in depth has been swept from beneath it by the winds, being 
carried to the south-east and somewhat higher up the hillside. 
Kames along Pine River. 
South-east from Ossipee lake a continuous belt of modified drift ex- 
tends along the entire course of Pine river, forms the water-shed between 
Pine River pond and Balch pond, and thence continues eastward along 
Little Ossipee river in Maine. These ponds are about 20 and 40 feet 
respectively below the lowest point of the water-shed, which is about 550 
feet above the sea, or 140 above Ossipee lake, 12 miles distant. The 
width of the modified drift here is fully a mile, and it is not much nar- 
rower at any point. It occupies a comparatively straight valley, which is 
commonly bordered by high hills at each side. An exception to this is 
found in the south part of Effingham, where level sandy plains about 500 
feet above the sea extend nearly continuous from Pine river to Prov- 
ince pond. Other level plains occur, as south-east of Duncan lake, be- 
tween North Wakefield and the mouth of Pine River pond, and east of 
East Wakefield depot ; but the greater part of this modified drift has an 
uneven surface, presenting small hollows, ridges, and mounds; and prom- 
inent kames, in ridges from 75 to 125 feet above the river, extend along 
the middle of the valley. 
This series of kames or gravel ridges borders Pine river south-east from 
Ossipee Centre, but it is not well shown at the bridge in Effingham. Two 
miles farther south, where there were formerly a bridge and mills, it con- 
sists of a single narrow ridge, 100 feet above the river which flows at its 
foot on the east, and 30 feet above the plains which extend a mile south- 
west to Duncan lake. One mile southward this principal kame of the 
series is said to lie between White and Black ponds. Opposite Ossipee 
Corner the river crosses the line of this ridge, a half mile of which has 
been swept away. It next appears east from the mouth of Poland brook, 
and extends in a single ridge a mile to the south, with a height 50 to 75 
