I have heard my brother playing on his flute at evening half a mile off through the houses of the village, every note with perfect distinctness. It seemed a more beautiful communication with me than the sending up of a rocket would have been. So, if I mistake not, the sound of blasting rocks has been heard from down the river as far as Lowell,—some twenty miles by its course,—where they were making a deep cut for the railroad. * * * * * The sand cherry (_Prunus depressa_ Pursh., _Cerasus pumila_ Mx.) grew about my door, and near the end of May enlivened my yard with its umbels arranged cylindrically about its short branches. In the fall, weighed down with the weight of its large and handsome cherries, it fell over in wreath-like rays on every side. I tasted them out of compliment to nature, but I never learned to love them.[7] If the long-continued rains cause the seeds to rot in the ground and destroy the potatoes in the low lands, they are good for the grass on the uplands, though the farmers say it is not so sweet.[8] * * * * * As I walked, I was intoxicated with the slight spicy odor of the hickory buds and the bruised bark of the black birch, and, in the fall, the pennyroyal. Many a time I have expected to find a woodchuck, or rabbit, or a gray squirrel, when it was the ground-robin rustling the leaves. I have been surprised to discover the amount and the various kinds of life which a single shallow swamp will sustain. On the south side of the pond, not more than a quarter of a mile from it, is a small meadow of ten or a dozen acres in the woods, considerably lower than Walden, and which by some is thought to be fed by the former by a subterranean outlet,—which is very likely, for its shores are quite springy and its supply of water is abundant and unfailing,—indeed tradition says that a sawmill once stood over its outlet, though its whole extent, including its sources, is not more than I have mentioned,—a meadow through which the Fitchburg Railroad passes by a very high causeway, which required many a carload of sand, where the laborers for a long time seemed to make no progress, for the sand settled so much in the night that by morning they were where they were the day before, and finally the weight of the sand forced upward the adjacent crust of the meadow with the trees on it many feet, and cracked it for some rods around. It is a wet and springy place throughout the summer, with a ditch-like channel, and in one part water stands the year round, with cat-o’-nine-tails and tussocks and muskrats’ cabins rising above it, where good cranberries may be raked if you are careful to anticipate the frost which visits this cool hollow unexpectedly early. Well, as I was saying, I heard a splashing in the shallow and muddy water and stood awhile to observe the cause of it. Again and again I heard and saw the commotion, but