MODIFIED DRIFT ALONG CONNECTICUT RIVER. 29 
At Woodsville a great depth of material was brought into the valley 
by the Lower Ammonoosuc and Wells rivers. The former 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 north-west from the 
Narrows. It has been cut through by the river, and appears on the east 
side of the railroad at and above the junction, and again at the south-west 
side of Wells River depot, being more than a mile ae ee 
long. It is composed of coarse gravel and sand, bee ef 
anticlinally stratified, with varying height from & Pe. Pe 
80 to 150 feet above the river. It is well shown + ue @ 2, 
by cuttings, but otherwise might escape notice, as i 455- 
most of it is partially or wholly concealed by the 3 a 
ordinary alluvium. In position, material, and strat- z ae 
ification, this is like the long kame which extends : : 
in this valley from Lyme to Windsor; but in the §% : 
twenty-four miles from Wells River to Lyme no g , 
similar ridge is found. 4 * # 
From Wells river to Wait’s river, at Bradford, g 
the lowest terrace or interval is one half mile to g \ Z 
one mile in width; and the river sweeps in broad = 
curves from side to side between its bordering up- a 
per terraces. By the largest of these bends, called : e 
the Ox-bow, the river traverses two and a half S i ” 
miles to make one half mile of advance, by which . 
a beautiful expanse of interval is added to New- E 
bury. An old channel formerly left this and as Bs eis 
much more on its east side. This ancient course 3 i re 
extended from the north-west end of the Ox-bow e : - 
south-west to the railroad, which it followed to z5 m 
the brook that flows through Newbury village, by  %* 
which it passed east to its present channel. North Haverhill is situated 
on the highest normal terrace, 107 feet above the river and 27 feet higher 
