Trains of Boulders, in Berkshire, Mass. 315 
of the mountain, each of the depressions being at the head of 
a very steep and rugged ravine, on its easterly flank, the long- 
est train beginning in the largest depression. The knob, which 
fills the space between the two indentations, is not, as sup- 
posed by Dr. Reid, the starting place of either of these trains. 
Gazing westward from the crest, we look in vain, down the 
declivity on that side, or upon any of the lower ranges of hills 
towards the Hudson valley, for a single block like those which 
$0 thickly sprinkle its eastern slope. ‘Turning, however, to 
the eastward, and tracing the longest and most conspicuous 
stream of fragments, we notice that, while all the principal 
ridges and valleys of the district range about 20° west of 
south, the train takes a course which varies, in different parts, 
from 50° to 35° east of south; and here it is essential to . 
remark that this is the general direction of the diluvial furrows 
and scratches upon the strata of the district, and coincides 
With the direction taken by the rounded drift. It will be in- 
structive to notice a little in detail some of the changes which 
this gigantic pathway of stones exhibits. Descending the 
eastern flank, the blocks, which are here of huge dimensions, 
are thickly crowded along the great gutter or ravine. They 
9 not stream directly down the mountain, as if they had 
merely rolled to the foot by their gravity, but they take an 
oblique line, and cross the valley in a direction of about 45° 
fast of south. At a point about three quarters of a mile from 
i commencement, and near a small Shaker village, the train 
Inclines perceptibly (about 10^) more to the southward, and, 
in this course, it climbs the slope of the next mountain barrier, 
the Richmond range. On the brow of the mountain it re- 
Sumes its first direction, crossing, for a mile or more; its broad 
summit exactly over the highest point of one of its most con- 
‘Picuous knobs, elevated nearly one hundred feet above the 
Point in the Canaan ridge whence the train started. It then 
descends the eastern slope, in a line about 5^ more towards 
the east, and here contains an unusual number of the larger 
9f fragments, there being, according to Dr. Reid, in 
