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The home of the tree-toad, I am convinced, is usually a hollow limb or other cavity in the tree; here he makes his headquarters, and passes most of the day. For two years a pair of them frequented an old apple-tree near my house, occasionally sitting at the mouth of a cavity that led into a large branch, but usually their voices were heard from within the cavity itself. On one occasion, while walking in the woods in early May, I heard the voice of a tree-toad but a few yards from me. Cautiously following up the sound, I decided, after some delay, that it proceeded from the trunk of a small soft maple; the tree was hollow, the entrance to the interior being a few feet from the ground. I could not discover the toad, but was so convinced that it was concealed in the tree, that I stopped up the hole, determined to return with an axe, when I had time, and cut the trunk open. A week elapsed before I again went to the woods, when, on cutting into the cavity of the tree, I found a pair of tree-toads, male and female, and a large, shelless snail. Whether the presence of the snail was accidental, or whether these creatures associated together for some purpose, I do not know. The male toad was easily distinguished from the female by its large head, and more thin, slender, and angular body. The female was much the more beautiful, both in form and color. The cavity, which was long and irregular, was evidently their home; it had been nicely cleaned out, and was a snug, safe apartment.

The finding of the two sexes together, under such circumstances and at that time of the year, suggests the inquiry whether they do not breed away from the water, as others of our toads are known at times to do, and thus skip the tadpole state. I have several times seen the ground, after a June shower, swarming with minute toads, out to wet their jackets. Some of them were no larger than crickets. They were a long distance from the water, and had evidently been hatched on the land, and had never been polliwogs. Whether the tree-toad breeds in trees or on the land, yet remains to be determined. [FOOTNOTE: It now (1895) seems well established that both common toads and tree-toads pass the first period of their lives in water as tadpoles, and that both undergo their metamorphosis when very small. As soon as the change is effected, the little toads leave the water and scatter themselves over the country with remarkable rapidity, traveling chiefly by night, but showing themselves in the daytime after showers.]

Another fact in the natural history of this creature, not set down in the books, is that they pass the winter in a torpid state in the ground, or in stumps and hollow trees, instead of in the mud of ponds and marshes, like true frogs, as we have been taught. The pair in the old apple-tree above referred to, I heard on a warm, moist day late in November, and again early in April. On the latter occasion, I reached my hand down into the cavity of the tree and took out one of the toads. It was the first I had heard, and I am convinced it had passed the winter in the moist, mud-like mass of rotten wood that partially filled the cavity. It had a fresh, delicate tint, as if it had not before seen the light that spring. The president of a Western college writes in “Science News” that two of his students found one in the winter in an old stump which they demolished; and a person whose veracity I have no reason to doubt sends me a specimen that he dug out of the ground in December while hunting for Indian relics. The place was on the top of a hill, under a pine-tree. The ground was frozen on the surface, and the toad was, of course, torpid.