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potholes, and the probability of their visitation by generations 
of both the Indian and the white man, it is not surprising that 
nothing of their contents is left in or about them. There is, 
however, one rounded stone in the possession of Mr. Charles 
S. Bates, the owner of Cooper's Island, which tradition states 
to have been taken from the deepest pothole (No. 1). It is a 
smoothly rounded and nearly spherical ball of granite about 
four inches in diameter,—a typical pothole bowlder ; and there 
seems to be no reason to question the truth of the tradition. 
On one of the higher ledges south of Little Harbor and 
Beach Street, and near the village, there is a smooth hollow in 
the granite, about a foot across and nine inches deep, which, 
from its form, has been called the ** Devil's Armchair.” 
Although not well-defined, it is clearly a small pothole ; and in 
this instance, as in others, an apparently water-worn channel 
extends cast-southeast on the rather abrupt slope of the ledge 
for several feet, ending in another and smaller hole. During 
the past year I have discovered still another pothole. This is 
on Cohasset Rocks, immediately behind the Black Rock 
House, on a bare surface of granite sloping down into the sea, 
and only two or three feet above the high-tide level. It is a 
smoothly-worn and sharply-defined basin, somewhat pear- 
shaped in outline, and measuring 41 by 33 inches in maximum 
length and breadth, the major axis trending about S. 15 W. 
It holds about six inches of water, but the depth below the 
well-defined rim varies from 6 to 18 inches, being shallowest 
on the side toward the sea. 
The potholes of Cooper's Island, although on the shore, do 
not directly face the sea, and the Well, especially, is quite shut 
in by the granite ledge on the seaward side, as the eut shows. 
They are also partly above the high-tide level; and the lower 
ones are bathed only by the quiet waters of Little Harbor. If 
the sea were high enough to sweep over Beach Island and the 
other barriers between Little Harbor and the Atlantic, the pot- 
holes would be completely submerged and so still beyond the 
