willow is scarce they subsist principally on hemlock. They cut only small trees, perhaps they do not like the coarser bark of the large trees. In other States I have seen many cottonwood and willow trees over a foot in diameter cut, but six inches was about the largest tree I saw cut here. In one group of dams that we saw yesterday the beavers had cleared off about all the small trees and the place was so near deserted that all the fresh work we saw could have been made by our beaver. The bark seems to form their entire diet with the exception of water lily roots, and these cannot be eaten much or the plants would be less plentiful. It seems peculiar that these animals should subsist so exclusively on a food that was hard to obtain and always necessitated considerable exertion to bite off, when many species of plants were abundant, much easier to got and eat, and apparently more nutritious,