GLACIAL DRIFT. 233 
south part of Deerfield descends to a large branch of the Lamprey river, and then rises 
much towards the Centre. On both sides of this stream are lines of moraines parallel 
with the brook, and also with the valley. These are excellent illustrations of this class 
of moraines. How far these moraines would extend along the valley, can be known 
only by further search. Our traverse is simply one section across them. Other exam- 
ples occur in crossing the parallel tributary one mile south from the Centre. 
The hill north of Pawtuckaway pond in Nottingham, on the road nearest to and 
around the mountain, shows lines of moraines parallel to the hill south-west from 
Quincy pond. Some of the blocks are 12 or 15 feet in length. 
In the north part of Fremont is a round hill less than 200 feet above the plain, around 
which are local moraines, especially upon the north-west side. There is a large field 
“of big blocks near the Baptist church on the east side. The east and west road in the 
north parts of Fremont and Brentwood lies over numerous drift ridges and moraines 
essentially parallel with the stream and the higher land to the south. These may not 
be local. 
In Kensington, the lenticular hills in the north-west part of the town show good 
illustrations of the local moraines in the form of many rough blocks and small mounds 
on the north-east side near M. Hobbs’s. Some of the blocks are 20 feet long. This 
example is of a large moraine deposit by the oldest drift, serving for the centre of 
dispersion of blocks at the close of glacial work. 
South of the railroad at Raymond for two miles, chiefly east from the village, are 
many moraines of all sizes, referred to local action, in case the high land to the north 
is regarded as the locality from which they have come. They are as conspicuous as 
most moraines left by the older drift. 
The foregoing are sufficiently numerous to call attention to the subject 
of these late movements of earth analogous to glaciers. In this same 
connection, I desire to describe certain other glacial phenomena of more 
consequence, but which usually do not prove themselves by any strize or 
embossment. They are better examples of ice action than what has just 
been described, but like them, move down valleys and hillsides, smooth- 
ing the ancient hill, and pushing along boulders. It is the action of gla- 
ciers upon material that had already been moved by the continental ice, 
and which belong to a later period still than the valley movements and 
local glaciers. All these glacial movements are described here before 
speaking of the boulders and moraines, so that the subject of glaciers 
may be treated as a unity. This class of facts was first brought out by 
the late Prof. L. Agassiz, who spent much time in their study about 
Bethlehem. I had the pleasure of seeing the phenomena he describes, 
under his guidance, and can testify to the fidelity of his statements. He 
