I look again at that place of squirrels (of the 13th). As I approach, I have a glimpse of one or two red squirrels gliding off silently along the branches of the pines, etc. They are gone so quickly and noiselessly, perhaps keeping the trunk of the tree between you and them, that [you] would not commonly suspect their presence if you were not looking for them. But one that was on the snow ascended a pine and sat on a bough with its back to the trunk as if there was nothing to pay. Yet when I moved again he scud up the tree, and glided across on some very slender twigs into a neighboring tree, and so I lost him. Here is, apparently, a settlement of these red squirrels. There are many holes though the snow into the ground, and many more where they have probed and dug up a white pine cone, now pretty black and, for aught I can see, with abortive or empty seeds; yet they patiently strip them on the spot, or at the base of the trees, or at the entrance of their holes, and evidently find some good seed. The snow, however, is strewn with the empty and rejected seeds. They seem to select for their own abode a hillside where there are half a dozen rather large and thick white pines near enough together for their aerial travelling, and then they burrow numerous holes and depend on finding (apparently) the pine cones which they cast down in the summer, before they have opened. In the fall they construct a nest of grass and bark-fibres, moss, etc., in one of the trees for winter use, and so apparently have two resources.