128 SURFACE GEOLOGY, 
and cause. Advancing to the south-east we leave the modified drift, but 
cross a water-shed which is probably lower than the highest of these 
kames, and thence follow Hersey brook to Smith’s pond. A sandy plain, 
about 50 feet above the pond or 75 feet above the lake, is found on the 
west side of this brook near its mouth, covering about half a mile square. 
The shores of this pond, like those of the lake, are almost entirely till or 
ledge. 
Upper Beech pond, covering perhaps 150 acres and about 300 feet 
above Lake Winnipiseogee, is situated a mile and a half north-east from 
the kames last described. Its outlet is to Ossipee lake by Beech river, 
but only a very slight barrier at its south-west side prevents its flowing 
to Winnipiseogee lake by Nineteen-mile brook. This barrier consists of 
a kame, which in its north-west portion is a nearly 
level plain three or four acres in extent, but for 
several hundred feet south-east from this it is nar- 
rowed to a mere ridge. The gravel of the small 
plain is but slightly water-worn, the rock fragments 
itis, 2 Oeten Ewe being from a foot to a foot and a half in size. The 
UpreR BEECH Ponp, ridge consists of sand or finer gravel, in which 
WOLFEBOROUGH. fragments larger than six inches are uncommon. 
Seale; Tinch—t mile: THis whole deposit is bounded by steep slopes both 
against the pond and on the opposite side. The height of the plain is 
20 to 30 feet above the pond; that of the ridge declines to only ten feet, 
and at its east end to only three feet above the pond, while its south-west 
slope falls abruptly to 20 or 30 feet below it. Large springs fed from the 
pond issue at the bottom of this bank. Except at this point and its out- 
let, this pond is surrounded by high hills; and no other kame-like deposits 
occur on its shores or in the steeply sloping valley that descends towards 
the south-west from this barrier. 
The shores of the lake through Wolfeborough have no modified drift 
worthy of note. It is next met with in Alton, about a mile east from 
Fort point and the mouth of Alton bay. Proceeding eastward from the 
mouth of the bay, we soon come to a hill more than 200 feet high, and at 
its east side find an area of considerable width, which is only 50 to 60 
feet above the lake, and extends about two miles from north to south 
between the lake and the bay at Gerrish point. Where this area is 
