146 
GLACIAL PHENOMENA IN MAINE. 
nected with this investigation, which I could 
not easily notice at an earlier time without 
interrupting my narrative. East and south of 
Bangor there are considerable deposits of 
faintly laminated clays, used for the manu¬ 
facture of bricks, in which striated pebbles and 
patches of sand are sparsely inter spread. I 
take it for granted that the clays are morainic 
materials remodelled by the floods arising from 
the melting of the great glaciers, and that the 
pebbles and sands are the droppings of ice¬ 
bergs floating upon these waters. This is the 
more probable, since accumulations of irreg¬ 
ularly stratified sand are always found in the 
vicinity of such masses of sifted clays, contain¬ 
ing scratched pebbles. I have seen similar de¬ 
posits in the Western States, for instance, near 
Milwaukee and Chicago. 
Between Bangor and Mount Desert the usual 
evidence of glaciation is very extensive. I 
would mention as particularly interesting the 
hills south of Holden and the hills about 
Dedham. On the route along Union Bay there 
are also extensive polished surfaces, especially 
in the vicinity of Bucksport. Near Ellsworth 
they are beautifully preserved, and all the emi- 
