The canoes were launched again, and the voyagers held their course. Soon the still surface was flecked with spots of foam; islets of froth floated by, tokens of some great convulsion. Then, on their left, the falling curtain of the Rideau shone like silver betwixt its bordering woods, and in front, white as a snowdrift, the cataracts of the Chaudiere barred their way. They saw the unbridled river careering down its sheeted rocks, foaming in unfathomed chasms, wearying the solitude with the hoarse outcry of its agony and rage. On the brink of the rocky basin where the plunging torrent boiled like a caldron, and puffs of spray sprang out from its concussion like smoke from the throat of a cannon, Champlain's two Indians took their stand, and, with a loud invocation, threw tobacco into the foam,--an offering to the local spirit, the Manitou of the cataract. They shouldered their canoes over the rocks, and through the woods; then launched them again, and, with toil and struggle, made their amphibious way, pushing dragging, lifting, paddling, shoving with poles; till, when the evening sun poured its level rays across the quiet Lake of the Chaudiere, they landed, and made their camp on the verge of a woody island. Day by day brought a renewal of their toils. Hour by hour, they moved prosperously up the long windings of the solitary stream; then, in quick succession, rapid followed rapid, till the bed of the Ottawa seemed a slope of foam. Now, like a wall bristling at the top with woody islets, the Falls of the Chats faced them with the sheer plunge of their sixteen cataracts; now they glided beneath overhanging cliffs, where, seeing but unseen, the crouched wildcat eyed them from the thicket; now through the maze of water-girded rocks, which the white cedar and the spruce clasped with serpent-like roots, or among islands where old hemlocks darkened the water with deep green shadow. Here, too, the rock-maple reared its verdant masses, the beech its glistening leaves and clean, smooth stem, and behind, stiff and sombre, rose the balsam-fir. Here in the tortuous channels the muskrat swam and plunged, and the splashing wild duck dived beneath the alders or among the red and matted roots of thirsty water willows. Aloft, the white-pine towered above a sea of verdure; old fir-trees, hoary and grim, shaggy with pendent mosses, leaned above the stream, and beneath, dead and submerged, some fallen oak thrust from the current its bare, bleached limbs, like the skeleton of a drowned giant. In the weedy cove stood the moose, neck-deep in water to escape the flies, wading shoreward, with glistening sides, as the canoes drew near, shaking his broad antlers and writhing his hideous nostril, as with clumsy trot he vanished in the woods.