George, not to be outdone, made a dive for his .22 and began to pop as if he had no love for snakes. Ken had doubts about this species. The snakes were short, thick, dull brown in color, and the way they slipped into the stream proved they were water-snakes. Ken had never read of a brown water-moccasin, so he doubted that these belonged to that poisonous family. Anyway, snakes were the least of his troubles.

"Boys, you're doing fine," he said. "There are about a thousand snakes there, and you've hit about six."

He walked down through the glade into the forest, and was overjoyed to hear once more the heavy roar of rapids. He went on. The timber grew thinner, and light penetrated the jungle. Presently he saw the gleam of water through the trees. Then he hurried back.

"All right, boys," he shouted. "Here's the river."

The boys were so immensely relieved that packing the outfit round the waterfalls was work they set about with alacrity. Ken, who had on his boots, broke a trail through the ferns and deep moss. Pepe, being barefoot, wasted time looking for snakes. George teased him. But Pepe was deadly serious. And the way he stepped and looked made Ken thoughtful. He had made his last trip with supplies, and was about to start back to solve the problem of getting the boat down, when a hoarse yell resounded through the sleeping jungle. Parrots screeched, and other birds set up a cackling.

Ken bounded up the slope.

"Santa Maria!" cried Pepe.

Ken followed the direction indicated by Pepe's staring eyes and trembling finger. Hanging from a limb of a tree was a huge black-snake. It was as thick as Ken's leg. The branch upon which it poised its neck so gracefully was ten feet high, and the tail curled into the ferns on the ground.

"Boys, it's one of the big fellows," cried Ken.

"Didn't I tell you!" yelled George, running down for his gun.