The Trail of the Sword, Volume 2 by Gilbert Parker

After this came varying days of hardship by land and water, and then another danger. One day they were, crossing a great northern lake. The land was moist with the sweat of quick-springing verdure; flocks of wild fowl rose at all points, and herds of caribou came drinking and feeding at the shore. The cries of herons, loons, and river-hens rose with strange distinctness, so delicate was the atmosphere, and the blue of the sky was exquisite.

As they paddled slowly along this lake, keeping time to their songs with the paddles, there suddenly grew out of the distance a great flotilla of canoes with tall prows, and behind them a range of islands which they had not before seen. The canoes were filled with men -- Indians, it would seem, by the tall feathers lifting from their heads. A moment before there had been nothing. The sudden appearance was even more startling than the strange canoe that crossed their track on Lake of the Winds. Iberville knew at once that it was a mirage, and the mystery of it did not last long even among the superstitious. But they knew now that somewhere in the north -- presumably not far away -- was a large band of Indians, possibly hostile; their own numbers were about fourscore. There was the chance that the Indians were following or intercepting them. Yet, since they had left the Ottawa River, they had seen no human being, save in that strange canoe on Lake of the Winds. To the east were the dreary wastes of Labrador, to the west were the desolate plains and hills, stretching to the valley of the Saskatchewan.