GLACIAL PHENOMENA IN MAINE. 
147 
nences are moutonnSes. At Ellsworth Falls, 
on both sides of the bridge, there are splendid 
polished surfaces, with scratches and furrows 
pointing due north. Between Ellsworth and 
Trenton, and westward of that meridian, in 
the direction of Bucksport, there are several 
longitudinal moraines parallel to one another, 
running from north to south, composed of 
large angular boulders, resting upon ground 
moraines made up of rounded, scratched peb¬ 
bles and sand mixed with clay. Such a super¬ 
position is utterly incompatible with the idea 
of currents passing over these tracks. Two 
miles west of Ellsworth a similar longitudinal 
moraine runs over the top of the hill, and 
about one mile farther west there is another, 
chiefly composed of the coarse Dedham granite. 
The bottom deposit, upon which these moraines 
rest, consists of fine sand and loam with 
scratched pebbles. Seven or eight miles west 
of West Ellsworth the hills, consisting of clay 
slates on edge, trending from east to west, are 
abraded, and upon the polished surfaces of 
their levelled edges rest two other longitudinal 
moraines, with angular boulders of Dedham 
granite, running from north to south, and rest- 
