38 On Bowlders and Rolled Stones. 
yet scarcely a mht fragment has been seen in any part of ‘ 
the bank that has been removed. What has become 
it? Has it not in the course of time been ground to atoms, 
(it being of a softer texture) and mixed with the powder of 
the granite and other rocks, contributing to the richness 
and: fertility of the extensive plains in the valley of the 
Connecticut river. We seldom if ever, find rounded slate 
stones, although they compose many of the hills near the 
onnecticut. This, probably, is in some measure owing 
to their natural structure, but ail the other kinds es in 
this region are found more or Jess abundantly, some 
never very far from those of the seme kind in place, nhs 
for instance asthe soapstone. May not the detritus of these 
rocks have been deposited in part in the great depths of 
still water below, and again in time have recomposed other 
- rocks of the same kind or by different composition of dif- 
ferent kinds. Vailevs in a great measure similar to the one 
above described, are seen every where, always presenting the 
same indisputable evidence that similar causes have pro- 
ined similar effects. This will account for the cavities 
din your tour to Quebec, in limestone rock at 
the Beal of Lake George. My impression is that these 
rset could not be traced, as the result of any natural 
strea There is a narrow and short valley at the north. 
end of Fairlee pond running between two high mouniains to 
Bradford. On the highest ground in this valley, where 
thé waters divide and run northerly to Connecticut River 
at Bradford and southerly to Fairlee pond which is proba- 
150 feet above the level of Connecticut River, there are 
cavities (I am told) worn in the solid rock. It was evi- 
dently a greatly compressed body of water passing through 
this narrow space that made i excavation of Fairlee pond. 
That body of water at that time must have reached mu 
of the way to Lake Chanrpiala abril the valleys of On- 
ion and Wait’s rivers, by which route I understand there is 
no perceptible rise of ground between the waters of the 
Lake and those of Connecticut River. Again, mountains 
at and near the Connecticut river often present precipices 
of naked, perpendicular rocks, sometimes of the full height 
of the mountain, unless where loose rocks pulled off by the 
ice, by the roots of trees, or fallen by natural decay, are pil- 
ed up against their sides. In time they will probably reach 
‘ 
