The hunters were accompanied by three of their dogs, and before they had time to decide where they should first begin work, the dogs began barking at a point between the west lodge and the bank; so they went over to investigate. Evidently the dogs had spied a beaver, for now, though none was in sight, the canines were rushing back and forth in great excitement over a fairly deep submarine runway or clear passageway, through the shallow, rush-matted water under the ice.
Chopping a hole through the ice with his axe, Oo-koo-hoo drove down a couple of crossed poles to block the passageway, and Amik, finding other runways, did likewise at other places. Several of the passageways led to the bank, where, Oo-koo-hoo said, they had what is called "bank lodges"—natural cavities in the river bank to which the beavers had counted on resorting in case their house was raided. In other places, where the snow obscured the view, the Indians knocked on the ice with the backs of their axes, to find and follow the hollow-sounding ice that told of runways below, that other stakes might be driven down. The rapping sound, however, instead of driving the beavers out of their lodge, had a tendency to make them remain at home, for as Oo-koo-hoo explained, cutting ice and working around their homes does not always frighten the beavers.
Securing two stouter poles, the hunters now chopped the butts into wedge-shaped chisels, with which they proposed to break open the beavers' lodge. Work was begun about a foot above the level of the snow on the south side, as they explained that the lodge would not only be thinner on that side, but that the sun would make it slightly softer, too—and before much headway was made the dogs, all alert, discovered that several of the beavers had rushed out of their house, but finding the passageways blocked had returned home.
Now, strange to say, as soon as the side of the house was broken open and daylight let in, the beavers, becoming curious over the inflowing light that dazzled their eyes, actually came toward the newly made hole to investigate. Then Oo-koo-hoo, with the aid of a crooked stick, suddenly jerked one of the unsuspecting animals out of the hole and Amik knocked it on the head. Thus they secured four large ones, but left a number of smaller ones unharmed, as Oo-koo-hoo never made a practice of taking a whole family.
In that house the portion of the chamber used for sleeping quarters was covered with a thick mattress of dry "snake-grass," and the whole interior was remarkably clean. After blocking and patching up the hole and covering the place with snow, the hunters threw water over it until it froze into a solid mass, then they removed the stakes from the runways and left the rest of the beavers in peace. Loading their catch upon their toboggans, all set out for home.
BEAVER DAMS AND CANALS
Besides erecting their remarkably strong houses there are two other ways in which the beavers display wonderful skill: in the building of their dams and in the excavating of their canals. Their dams are built for the purpose of retarding, raising, and storing water, in order—in summer time—to circumvent their enemies by placing a well-watered moat between their foe and their castle; also to flood a wider area so that the far-reaching waters of their pond may lap close to the roots of many otherwise inaccessible trees and thus enable them to fell and float them to their lodge; and—in winter time—to raise the water high enough to secure their pond from freezing solid and imprisoning them in their lodges where they would starve to death, or if they gnawed their way to freedom, the intense cold of mid-winter would freeze their hairless tails and cause their death; furthermore, should they escape from the weather, they would be at the mercy of all their enemies and would not long survive.
A dam, in the beginning, is usually erected in a small way, just to raise and expand the waters of some small creek or even those of a spring; then, as the years go by, it is constantly added to, to increase the depth and expansion of the pond, and thus the dam grows from a small one of a few yards in length to a big one of several hundred feet—sometimes to even four or five hundred feet in length—that may bank up the water four or five feet above the stream just outside the dam, and turn the pond into a great reservoir covering hundreds of acres of land.
The dam is more often built of branches laid parallel to the current with their butts pointing up stream, and weighted down with mud and stones; thus layer after layer is added until the structure rises to the desired height and strength. Some dams contain hundreds of tons of material. They are usually built upon a solid bottom, not of rock—though big, stationary boulders often are included in the construction for the extra support they furnish. When thus used, boulders often cause the beavers to divert the line of the dam out of its usual graceful and scientific curve that well withstands the pressure from even a large body of water.
The beavers excavate canals—sometimes hundreds of feet in length—to enable them to reach more easily and float home the wood they have cut from freshly felled trees lying far beyond the reaches of their pond. The canals measure from two to three feet in width and a foot to a foot and a half in depth, and are not only surprisingly clean-cut and straight but occasionally they are even provided with locks, or rather little dams, to raise the water from one level to another—generally about a foot at a time—to offset the disadvantage of the wood lying on higher and more distant ground than is reached by the waters of the residential pond. Sometimes their canals are fed by springs, but more often by the drainage of rainwater. The building of many of their dams and canals displays remarkable skill and a fine sense of engineering, together with a spirit of perseverance that is astounding. Is it any wonder that the Indians say that the beavers were once human beings, whom, for the punishment of some misconduct The Master of Life condemned to get down and grovel upon the ground as four-footed animals for the rest of their days.