The Boy grinned appreciation of the notable honour done him in the naming of the pond, and a little flush of pleasure deepened the red of his cheeks. He knew that the name would stick, and eventually go upon the maps, the lumbermen being a people tenacious of tradition and not to be swerved from their own way.

“Thank you, Jabe!” he said simply. “But how do you know there are sixteen or twenty beaver in my pond?”

“You said there was two houses,” answered the woodsman. “Well, we reckon always from eight to ten beaver to each house, bein’ the old couple, and then three or four yearlin’s not yet kicked out to set up housekeeping fer themselves, and three or four youngsters of the spring’s whelping. Beavers’ good parents, an’ the family holds together long’s the youngsters needs it. Now I’m off. See you here at noon, fer grub!” and picking up his axe he strode off to southwestward of the camp to investigate a valley which he had located the day before.

Left alone, the Boy hurriedly set the camp in order, rolled up the blankets, washed the dishes, and put out the last of the fire. Then, picking up his little Winchester, which he always carried,–though he never used it on anything more sensitive than a bottle or a tin can,–he retraced his steps of the night before, up-stream to the beaver pond.

Knowing that the beavers do most of their work, or, at least, most of their above-water work, at night, he had little hope of catching any of them abroad by daylight. He approached the dam, nevertheless, with that noiseless caution which had become a habit with him in the woods, a habit which rendered the woods populous for him and teeming with interest, while to more noisy travellers they seemed quite empty of life. One thing his study of the wilderness had well taught him, which was that the wild kindreds do not by any means always do just what is expected of them, but rather seem to delight in contradicting the naturalists.

When he reached the edge of the open, however, and peered out across the dam, there was absolutely nothing to break the shining morning stillness. In the clear sunlight the dam, and the two beaver-houses beyond, looked larger and more impressive than they had looked the night before. There was no sign of life anywhere about the pond, except a foraging fish-hawk winging above it, with fierce head stretched low in the search for some basking trout or chub.

Following the usual custom of the wild kindreds themselves, the Boy stood motionless for some minutes behind his thin screen of bushes before revealing himself frankly in the open. His patient watch being unrewarded, he was on the very verge of stepping forth, when from the tail of his eye he caught a motion in the shallow bed of the brook, and ducked himself. He was too wary to turn his head; but a moment later a little brown sinuous shape came into his field of view. It was an otter, making his way up-stream.

The otter moved with unusual caution, glancing this way and that and seeming to take minute note of all he saw. At the foot of the dam he stopped, and investigated the structure with the air of one who had never seen it before. So marked was this air that the Boy concluded he was a stranger to that region,–perhaps a wanderer from the head of the Ottanoonsis, some fifteen miles southward, driven away by the operations of a crew of lumbermen who were building a big lumber-camp there. However that might be, it was evident that the brown traveller was a newcomer, an outsider. He had none of the confident, businesslike manner which a wild animal wears in moving about his own range.

When he had stolen softly along the whole base of the dam, and back again, nosing each little rivulet of overflow, the otter seemed satisfied that this was much like all other beaver dams. Then he mounted to the crest and took a prolonged survey of the stretch of water beyond. Nothing unusual appearing, he dived cleanly into the pond, about the point where, as the Boy guessed, there would be the greatest depth of water against the dam. He was apparently heading straight up for the inlet of the pond, on a path which would take him within about twenty-five or thirty yards of the main beaver-house on the island. As soon as he had vanished under the water the Boy ran forward, mounted the crest of the dam, and peered with shaded eyes to see if he could mark the swimmer’s progress.

For a couple of minutes, perhaps, the surface of the pond gave no indication of the otter’s whereabouts. Then, just opposite the main beaver-house, there was a commotion in the water, the surface curled and eddied, and the otter appeared in great excitement. He dived again immediately; and just as he did so the head of a huge beaver poked up and snatched a breath. Where the two had gone under, the surface of the pond now fairly boiled; and the Boy, in his excitement over this novel and mysterious contest, nearly lost his balance on the frail crest of the dam. A few moments more and both adversaries again came to the surface, now at close grips and fighting furiously. They were followed almost at once by a second beaver, smaller than the first, who fell upon the otter with insane fury. It was plain that the beavers were the aggressors. The Boy’s sympathies were all with the otter, who from time to time tried vainly to escape from the battle; and once he raised his rifle. But he bethought him that the otter, after all, whatever his intentions, was a trespasser; and that the beavers had surely a right to police their own pond. He remembered an old Indian’s having told him that there was always a blood feud between the beaver and the otter; and how was he to know how just the cause of offence, or the stake at issue? Lowering his gun he stared in breathless eagerness.

The otter, however, as it proved, was well able to take care of himself. Suddenly rearing his sleek, snaky body half out of the water, he flashed down upon the smaller beaver and caught it firmly behind the ear with his long, deadly teeth–teeth designed to hold the convulsive and slippery writhings of the largest salmon. With mad contortions the beaver struggled to break that fatal grip. But the otter held inexorably, shaking its victim as a terrier does a rat, and paid no heed whatever to the slashing assaults of the other beaver. The water was lashed to such a turmoil that the waves spread all over the pond, washing up to the Boy’s feet on the crest of the dam, and swaying the bronze-green grasses about the house on the little island. Though, without a doubt, all the other citizens of the pond were watching the battle even more intently than himself, the Boy could not catch sight of so much as nose or ear. The rest of the spectators kept close to the covert of grass tuft and lily pad.

All at once the small beaver stiffened itself out convulsively on top of the water, turned belly up, and began to sink. At the same time the otter let go, tore free of his second and more dangerous adversary, and swam desperately for the nearest point of shore. The surviving beaver, evidently hurt, made no effort to follow up his victory, but paddled slowly to the house on the island, where he disappeared. Presently the otter gained the shore and dragged himself up. His glossy brown skin was gashed and streaming with blood, but the Boy gathered that his wounds were not mortal. He turned, stared fixedly at the beaver-house for several seconds as if unwilling to give in, then stole off through the trees to seek some more hospitable water. As he vanished, repulsed and maltreated, the Boy realized for the first time how hostile even the unsophisticated wilderness is to a stranger. Among the wild kindreds, even as among men, most things worth having are preempted.

When the Boy’s excitement over this strange fight had calmed down, he set himself with keen interest to examining the dam. He knew that by this time every beaver in the pond was aware of his presence, and would take good care to keep out of sight; so there was no longer anything to be gained by concealment. Pacing the crest, he made it to be about one hundred feet in length. At the centre, and through a great part of its length, it was a little over three feet high, its ends diminishing gradually into the natural rise of the shores. The base of the dam, as far as he could judge, seemed to be about twelve feet in thickness, its upper face constructed with a much more gradual slope than the lower. The whole structure, which was built of poles, brush, stones, and earth, appeared to be very substantial, a most sound and enduring piece of workmanship. But along the crest, which was not more than a foot and a half in width, it was built with a certain looseness and elasticity for which he was at a loss to account. Presently he observed, however, that this dam had no place of overflow for letting off the water. The water stood in the pond at a height that brought it within three or four inches of the crest. At this level he saw that it was escaping, without violence, by percolating through the toughly but loosely woven tissue of sticks and twigs. The force of the overflow was thus spread out so thin that its destructive effect on the dam was almost nothing. It went filtering, with little trickling noises, down over and through the whole lower face of the structure, there to gather again into a brook and resume its sparkling journey toward the sea.

The long upper slope of the dam was smoothly and thoroughly faced with clay, so that none of its framework showed through, save here and there the butt of a sapling perhaps three or four inches in diameter, which proclaimed the solidity of the foundations. The lower face, on the other hand, was all an inexplicable interlacing of sticks and poles which seemed at first glance heaped together at haphazard. On examination, however, the Boy found that every piece was woven in so firmly among its fellows that it took some effort to remove it. The more he studied the structure, the more his admiration grew, and his appreciation of the reasoning intelligence of its builders; and he smiled to himself a little controversial smile, as he thought how inadequate what men call instinct would be to such a piece of work as this.

But what impressed him most, as a mark of engineering skill and sound calculation on the part of the pond-people, was the direction in which the dam was laid. At either end, where the water was shoal, and comparatively dead even in time of freshet, the dam ran straight, taking the shortest way. But where it crossed the main channel of the brook, and required the greatest strength, it had a pronounced upward curve to help it resist the thrust of the current. He contemplated this strong curve for some time; then, a glance at the sun reminding him that it was near noon, he took off his cap to the low-domed house in the water and made haste back to camp for dinner.