"Perhaps," said the American drily; "but it will mean a fight, and we should have to kill the old one first." "Do you think he would make a fight of it?" asked Brace. "I am certain of it," said Briscoe. "Suppose we put it off for a day or two and think about it. There is plenty of time, and we are certain to get another chance." "Go on, then," said Brace. "Let's prospect up to the falls, cross over, and try on the other side for the ducks and fish we have got to take back for the cook." Lynton chuckled and sent the boat gliding swiftly along for the next few minutes, opening out again and again lovely vistas of river, forest, and verdant shore, all of which invited landing and promised endless collecting excursions. But the present was looked upon as a tour of inspection, and all eyes scanned the shore and every creek that was passed in search of Indians, a lively recollection of the first boat expedition begetting plenty of caution. And all the while they sailed on and on towards the grand falls, which rapidly grew in size as they were approached, the water thundering down and the face of the cataract being obscured by the cloud of mist which rose slowly till it was wafted away to fade in the glorious sunshine. CHAPTER TWENTY THREE. A GREAT DANGER. So rapt were all the party in the awe-inspiring scene and in the beauty of the falls--which were broken up by island-like rocks peering out grey and green right across, so that as the adventurers drew nearer it was to gaze at the beauties of at least a dozen falls instead of one, as they had expected--that they did not notice how the wind was dropping as they advanced, nor yet the change that had taken place in the river current. It was Brace who first marked the alteration whilst he was noticing the numbers of fish leaping and darting away in front of the boat as she glided on. "We ought almost to stop and fish here," observed Briscoe. "We might have better luck with a smaller bait." "Perhaps we had better try," said Brace; "but I say, Mr Lynton, look here: what do you make of this?" "Make of what?" said the mate. "We are not sailing nearly so fast as we were a short time ago." "Oh, I don't know: we're making much about the same way." "But the boat does not rush through the water as she did." "That's right," said Briscoe. "A bit ago she nearly dipped gunwale under several times." "I noticed that," said Brace, "and that's the reason I called attention to the smooth way we are now progressing. There's just the same amount of wind blowing." "Yes; I say, Lynton, this isn't right," said Briscoe, in a sharp tone of voice. "What isn't right?" said the mate testily. "We're making splendid way. The boat's sailing along beautifully." "Yes, too beautifully," said Briscoe. "Can't you see what Mr Brace here means?" "No; I can't see anything wrong," answered Lynton, in a grumbling tone.