1889 .] 
223 
[Bouv6. 
10 feet from its bottom. The “ Well” itself was probably as 
deep at least as 10 feet, the curvature and wearing of the rock of 
the cliff above the present hole clearly showing this. 
The rocky ridge in which all these potholes or kettles are found, 
has a height of from 20 to 25 feet and is of granite. Besides 
the pot holes, of which an account has been given, there are other 
depressions showing distinctly a commencement of action tow- 
ards their formation. Two of such may be found 20 feet in a 
northerly direction from those numbered 1, 2 and 3 ; that is, be- 
tween these and the one called the “Well,” No. 4. One is shal- 
low, appearing like the bowl of a spoon, about a foot across, 
showing, extending from it, a water-worn channel sloping easterly 
to the edge of the rock surface about 10 feet ; and on a lower sur- 
face of the same rock, another and larger depression just where 
water from the first might descend. Moreover, a large portion of 
the rock surface shows not only glaciation but continued water 
action. 
Having learned that on a high, rocky elevation, perhaps half a 
mile from Cooper’s Island, there might be seen a singular hollow 
in the granite, which from its form has been called the Devil’s Seat, 
I visited it. Examination satisfied me that this, though not well 
defined, was a small pot hole ; and in this instance, as in others, 
an apparent water-worn channel extended on the rather abrupt 
slope of the rock for several feet, ending in another yet smaller 
hole, the diameter of the first being about 1 foot across in one direc- 
tion and 7 inches in another, both having a depth of about 9 
inches. The direction from the larger one to the smaller was found 
to be east-southeast. 
It is very certain that no river has ever existed in the region of 
the pot holes at Cohasset to account for their existence. We are 
forced, therefore, to ascribe their origin to the flowing of water 
from the great continental glacier. 
Considering the shallowness of the portions of the pot holes de- 
scribed on Cooper’s Island, remaining for our observation, and the 
probable likelihood of their visitation by generations of people, 
both of the Indian and the white man, it is not surprising that noth- 
ing is left of their contents in or about them. There is, however, 
one rounded stone in the possession of Mr. Charles S. Bates which 
tradition states to have been taken from the deepest one mentioned. 
It is elliptical, nearly spherical, in form ; its longest diameter being 
