A butternut-tree stands across the road in front of Woodchuck Lodge. One season the red squirrels stored the butternuts in the wall of one of the upper rooms of the unoccupied house, to which they gained access through a hole in the siding. When we moved in, in the summer, the squirrels soon became uneasy, and one day one of them began removing the butternuts, not to some other granary or place of safety, but to the grass and dry leaves on the ground in the orchard. He was unwittingly planting them by the act of hiding them. The automatic character of much animal behavior, the extent to which their lives flow in fixed channels, was well seen in the behavior of this squirrel. His procedure in transferring the nuts from his den in the house to the ground in the orchard, a distance of probably one hundred feet, was as definite and regular as that of a piece of machinery. He would rush up and over the roof of the house with a nut in his mouth, by those sharp, spasmodic sallies so characteristic of the movements of the red squirrel, down the corner of the house to the ground by the same jerky movements, across some rubbish and open ground in the same manner, alert and cautious, up the corner of a small building ten feet high and eight long, over its roof, with arched tail and spread feet, snickering and jerking, down to the ground on the other side, dashing to the trunk of an apple-tree ten feet away, up it a few feet to make an observation, then down to the ground again, and out into the grass, where he would carefully hide his nut, and cover it with leaves. Then back to the house again by precisely the same route and with precisely the same movements, and bring another nut. Day after day I saw him thus engaged till apparently all the nuts were removed. He probably did not know he was planting butternut-trees for other red squirrels, but that was what he was blindly doing. The crows and jays carry away and plant acorns and chestnuts in the same blind way, thereby often causing a pine forest to be succeeded by these trees. The red squirrel is only an irregular storer of nuts in the autumn. In this respect he stands half-way between the chipmunk and the gray squirrel, one of which regularly lays up winter stores and the other none at all.