So the leaves pile up. How good a thing it is to have a pig to work for! What zest and purpose it lends to one’s raking and piling and storing! If I could get nothing else to spend myself on, I should surely get me a pig. Then, when I went to walk in the woods, I should be obliged, occasionally, to carry a rake and a bag with me--much better things to take into the woods than empty hands, and sure to scratch into light a number of objects that would never come within the range of opera-glass or gun or walking stick. To see things through a twenty-four-toothed rake is to see them very close, as through a microscope magnifying twenty-four diameters. And so, as the leaves pile up, we keep a sharp lookout for what the rake uncovers--here, under a rotten stump, a hatful of acorns, probably gathered by the white-footed wood mouse. For the stump gives at the touch of the rake, and a light kick topples it down the hill, spilling out a big nest of feathers and three dainty little creatures that scurry into the leaf-piles like streaks of daylight. They are the white-footed wood mice, long-tailed, big-eared, and as clean and high-bred looking as greyhounds. Combing down the steep hillside with our rakes, we dislodge a large stone, exposing a black patch of fibrous roots and leaf mould, in which something moves and disappears. Scooping up a double handful of the mould, we capture a little red-backed salamander. This is not the “red” salamander that Mr. Burroughs tells us is “the author of that fine plaintive piping to be heard more or less frequently, according to the weather, in our summer and autumn woods.” His “red” salamander is really a “dull orange, variegated with minute specks or spots,” a species I have never found here in my New England woods. Nor have I ever suspected my red-backed salamander of piping; though he may do it, as may the angleworms, for aught I am able to hear, so filled with whir of iron wheels are my dull ears. But listen! Something piping! Above the rustle of the leaves we also hear a “fine plaintive” sound--no, a shrill and ringing little racket, rather, about the bigness of a penny whistle. Dropping the rake, we cautiously follow up the call--it seems to speak out of every tree trunk--and find the piper clinging to a twig, no salamander at all, but a tiny tree-frog, Pickering’s hyla, his little bagpipe blown almost to bursting as he tries to rally the scattered summer by his tiny, mighty “skirl.” Take him nose and toes, he is surely as much as an inch long, not very large to pipe against the north wind turned loose in the leafless woods.