On hearing Uncle Donald's voice the Indians started to their feet, and after a hurried breakfast, the canoes being launched and the baggage stowed on board, we proceeded on our voyage.  The mist by degrees cleared away, the sun mounting over the hills, lighted up the scenery, and our crews burst into one of the songs with which they were wont to beguile the time while plying their paddles.  Having stopped as before to dine we were paddling on, when we heard a low ceaseless roar coming down between the high banks.  In a short time we saw the waters rushing and foaming ahead of us, as they fell over a broad ledge of rocks.