44 
NATURK STUDY. 
but it is certainly riot very common. It would be of inter¬ 
est to know its distribution in the state. From this last 
specimen I have learned that its principal food is insects, 
beetles forming a large part. 
In the northern part of Windham is a boulder that is 
somewhat noted under the name of Butterfield Rock. It 
is not quite so large as the two nearer Manchester, de¬ 
scribed in Nature Study last year by Mr. Hopkins, but 
is much more conspicuous, as it rests upon a ledge at the 
summit of a hill. 
The rock is thir¬ 
ty-two feet long, 
thirty feet six 
inches wide and 
twenty high. 
The under side 
is convex, so 
that there is con¬ 
siderable space 
under it at one 
end. A concavity, a foot or two in depth, in this under 
side has been described as a pot-hole that was formed when 
the boulder was part of the parent ledge, but I am inclined 
to regard it as the result of weathering. In material the 
rock is a coarse gneiss, tending to mica schist in spots. It 
is.coarse grained and shows that some portions are much 
more easily weathered than others. 
On a recent visit to the rock I was fortunate enough to 
find in. a crevice about six feet from the ground a pair of 
ring-necked snakes, Diadophis punctatus, One, which 
had lost about two inchss of its tail and was. still thirteen 
inches in length, I succeeded in capturing. The other 
. escaped. These little reptiles, which are among our hand- 
