On Bowlders and Rolled Stones. 37 
and here deposited. It could come from no other source, 
for the bank of gravel on the two sides that are yet entire 
reaches to the pond shore, which is here about a mile 
wide. These materials too must have been originally 
brought from some distance and deposited in this valley, 
for they are composed almost exclusively — a light grey 
granite rock or gneiss. There is no roc the kind in 
place in any part of this region, and yortieularty for miles, 
or any where to the west. But on the east side of Connecti- 
cut river, they are every where found and in place. In Or- 
ford at the distance of from two to four and six miles they 
are in great abundance and apparently exactly of the same 
kind. It is difficult to think of any other means by which 
these blocks could have been brought here and deposited 
but by the ice. In return a particular rock that contains 
a great proportion of carbonate of lime is every where 
found on the east side of Connecticut river, with other 
rounded rocks, although none of that kind to my knowledge 
are seen east of the river in place, but west of it after a few 
miles they are in abundance and in place. A stream of 
water recently turned over one of those remaining banks 
for the purpose of making a slip,* has washed it away to 
the depth of nearly ove hundred feet, and to a similar width, 
and for two or three hundred feet in length. 
Every foot of the exposed surface or bank proves it to. 
en removed in opening the channel through this ridge 
and notwithstanding, that the banks of the valley, for some 
way to the west are formed entirely of that kind of stone, 
re: Slips as they are called here (but in tages hs shay oer rg a ope Lheve have a 
fo round this pond for about twenty year ning t lim- 
ber into ena an of the pon nd fro m the mountains around it fice | of the” 
way made b y iy on 
the frost and s snow for preparing x them ‘for running | the timber. Pine trees 
large , have been known 
to run a mile ina minute. The ey have made the pine timber, that was and 
would have been of little or no value without them, extremely valuable. 
