He had to raise his voice much above the ordinary, for out there on the river the rushing water did not seem so silent as the boys had believed when ashore; and all around them could be heard the boiling of the flood. Tree trunks floated around them in all directions, showing what an unusual thing this sudden rise of the river must be. There was constant danger lest one of these tremendous snags sink the delicate little skin boat; and often the boys had to use their paddles like mad to prevent such a catastrophe from happening.
And once, even a more singular peril threatened them. It was Sandy who made the discovery, shortly after Bob had uttered the remark given above.
"Oh! look yonder, brother; whatever can that be, perched up in that tree-top? It moved then, and we are getting closer to it all the while!" he exclaimed.
Bob needed only one look to tell him the nature of the object.
"It is a panther, Sandy," he said, quickly, and with a shake of his head. "A big cat of the wilderness; and, as Colonel Boone said, the thing most to be feared in all the forest, for it jumps on the hunter from behind. See his sleek gray sides? And notice how he swings his long tail back and forth? I do not think we want to get any closer to the gentleman, do you, Sandy?"
"See him crouch, Bob!" cried the other boy, in alarm. "Do you think he means to jump for the boat? What if he did, and upset us out here? That would be terrible! Let us shout together, and scare him, if we can!"
They did so, at the same time working feverishly to urge the boat further away from the drifting tree-top, which had come to be the refuge of the wood's terror.
Bob cast an apprehensive eye at the distance separating them. Could the animal clear it, if he decided to jump? Would he dream of changing his base in the hope of bettering his condition?
In fact, Bob was just considering whether it would not be wiser for him to rely on his gun, if the priming could be renewed in time, rather than in the hope of leaving the beast in the lurch, when Sandy cried out gleefully: