"What is to be done, Peter?" Harold shouted.
"We must take to the canoe. There's clear water on the other side."
Harold crossed the island and saw that what Peter said was correct. A broad strip of black water stretched away in the darkness toward the shore. The whole ice-sheet was moving bodily before the wind, and as the island stood up in its course the ice to windward of it was forced up over it, while under its lee the lake was clear. Not a moment was lost. The canoe was got out, carried over the rocks, and carefully lowered into the water under shelter of the island. All the stores and provisions were lowered into it. A deerskin was spread on the bottom, and the girls, having been helped down into the boat, were told to lie down and were then covered with blankets. The men wrapped themselves up in skins and blankets and took their places in the canoe, the four Indians taking paddles.
Quickly as the preparations had been made, there were but a few feet of the island uncovered by the ice, as the last man descended into the boat and they pushed off and, after a couple of strokes, lay with the boat's head facing toward the island at a distance of fifty yards from it. Although somewhat sheltered from the wind, the Indians were obliged to paddle hard to maintain their position. Harold wondered at first that they had not kept closer to the island, but he soon understood their reason for keeping at a distance. The massive blocks of ice, pressed forward by, the irresistible force behind, began to shoot from the top of the island into the water, gliding far on beneath the surface with the impetus of the fall, and then shooting up again with a force which would have destroyed the canoe at once had they touched it.
Soon a perfect cataract of ice was falling. Peter and Pearson took their places on each side of the bow of the canoe, with poles to push off the pieces as they drifted before the gale toward the shore. The work required the utmost strength and care. One touch from the sharp-edged blocks would have ripped open the side of the bark canoe like a knife, and in the icy cold water, encumbered by floating fragments of ice, even the best swimmer could not have gained the solid ice. The peril was great, and it needed all the strength and activity of the white men and the skill of the paddlers to avoid the danger which momentarily threatened them. So quickly did the blocks float down upon them that Pearson thought it might be impossible to avoid them all. The skins, therefore, were hung round the boat, dropping some inches into the water, and these, although they could not have prevented the boat from being stove in, by the larger fragments, yet protected its sides from the contact of the smaller ones.
For upward of an hour the struggle continued, and Harold felt something like despair at the thought of a long night passed in such a struggle. Presently sounds like the booming of cannon were heard above the gale.
"What is that?" he shouted to the Seneca chief, next to whom he was sitting.
"Ice break up," the chief replied. "Break up altogether."
This proved to be the case. As the ice was driven away from the further side of the lake the full force of the wind played upon the water there, and as the streak widened a heavy sea soon got up. The force of the swell extended under the ice, aiding the effect of the wind above, and the vast sheet began to break up. The reports redoubled in strength, and frequently the ice was seen to heave and swell. Then, with a sound like thunder, it broke and great cakes were forced one on the top of another, and soon, instead of a level plain of ice, a chaos of blocks were tossing about on the waves.
Harold watched the change with anxiety. No longer was the channel on either side marked by regular defined lines, but floating pieces encroached upon it, and, looking toward the shore, the channel appeared to be altogether lost. The danger was overwhelming, but the Indians, paddling with increased strength, urged the boat forward until within a few yards of the island.