Soon we came to a larger cellar-hole, of which, as of the smaller one, bushes and trees had long ago taken possession. Here had stood the city house, a “frame” structure (whence its name, probably), a famous affair in its day, the pride of its owner’s heart. It was one of five or six houses, if I understood my informant correctly, that had once been scattered over this part of the town of Weston (or what is at present the town of Weston) within a radius of a mile or so. Of them all not a trace remains now but so many half-filled cellars. I thought of something I had been saying lately about the manner in which the forest reclaims Massachusetts land as soon as its human possessors let go their hold upon it. Now it was suggested to me that if a man is ambitious to do something that will last, he had better not set up a house or a monument, but dig a hole in the ground. Humility helps to permanence. The lower you get, the less danger of falling. Nature is slower to fill up than to pull down, though she will do either with all thoroughness, give her time enough. To her a man’s life is but a clock’s tick, and all his constructions are but child’s play in the sand. A trite bit of moralizing? Well, perhaps it is; but it sounded anything but trite, as the old cellar-hole spoke it to me. A word is like a bullet: its force is in the power behind it. Not far beyond this point we found ourselves in a gray-birch swamp. Here, if anywhere, should be the nests we were in search of. And soon we began to see them, one here, another there. We followed the same course with them all; my companion shook or jarred the tree, while I stood off and watched for the squirrels. And the result was alike in all cases. Every nest was empty. We tried at least a score, and had our labor for our pains. “There _are_ no flying squirrels this year,” my companion kept saying. Perhaps they had migrated. With one or two exceptions, indeed, the nests could be set down in advance--from their color and evident dilapidation--as being at least a year old. Once we started a rabbit, and here and there a few chickadees accosted us. Once, I think, we heard the voice of a golden-crowned kinglet. For the rest, the woods seemed to be deserted, and at the end of our long détour we came back to the road half a mile above the point at which we had left it. And still the world is not depopulated, even in winter, nor are all the pretty wild animals asleep. The snakes are, to be sure, and the frogs (though hylas were peeping late in December), and the chipmunks and the woodchucks; but there is abundant life stirring, nevertheless. Yesterday I called on my friend again, and together we walked up the road--a back-country thoroughfare. This time, also, a light snow had just fallen, and my companion, better informed than I in such matters, began to discuss footprints with me. “You know this one?” he asked. “Oh, yes; a rabbit.” “And this one?” “A fox,” said I, doubtfully.