466 W.Upham—Northern part of the Connecticut Valley 
trast with the dry sandy plains of Merrimack River and other 
arts of New Hampshire. The most extensive intervals or 
meadows are between Woodsville and Bradford, twelve miles 
long and one half to one mile wide, including the Lower Cods 
intervals of Newbury, Haverhilland Piermont; and in Charles- 
town and Rockingham, six miles long and half a mile wide. 
In addition to these, smaller areas, up to a mile or more in 
length and a few rods to a half mile wide, are of common 
oceurrence. These bottom-lands are very fertile, being com- 
posed of the finest silt, and enriched every year by a coating of 
mud from the turbid freshets of Spring. Many of the lower 
terraces which are not overflowed are of the same material; 
but the higher terraces usually show some intermixed sand or 
fine grave 
The greatest widths of modified drift that can be measured 
in this valley on the west side of New Hampshire, are in Haver- 
hill and’ Newbury, two miles, and in Hinsdale and Vernon, two 
and a half miles wide. The average width is fully one mile. 
The narrowest places are at Shaw’s Mountain, near the south 
line of Bradford, and at Barber’s Mountain, in Claremont, both 
of which occupy the middle of the valley, with narrow belts of 
alluvium on each side; at the west side of Rattlesnake Hill, 
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ormer stream has cut its channel 200 feet deep through its 
delta, wide areas of which still remain on both sides. An old 
outlet of Wells River may be seen on its north side, one mile 
above its mouth, occupied at the close of the ice-period until it 
cleared away a hundred feet or more of modified drift from the 
pre-glacial rocky bed in which it now flows. A well marked 
kame occurs here, commencing in Bath half a mile northwest 
from the Narrows. It has been cut through by the river, and 
appears on the east side of the railroad at and above the junc- 
tion, and again at the southwest side of Wells River Depot, 
being more than a mile long. It is composed of coarse gravel 
and sand, anticlinally stratified, with varying height from 80 to 
150 feet above the river. It is well shown by cuttings, but 
otherwise might escape notice, as most of it is partially or 
