MODIFIED DRIFT ALONG PINE RIVER. I47 



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 sancl-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. 



Kamcs 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 



