Slowly, silently, two canoes glided along the still, dark water of a gloomy creek over-arched by the interlaced limbs of lofty trees.

The first, propelled by the slow-dipping blades of two Brazilian bushmen, seemed to be seeking something; for it nosed along with frequent pauses of the paddles, during which it drifted almost to a stop while its crew searched the solemn jungle depths reaching away from the right-hand shore. The second, carrying three bronzed and bearded men of another continent, was only trailing the leader. It moved and paused like the first, but the recurrent scrutiny of the farther gloom by its paddlers was that of men who saw only a meaningless, monotonous bulk of buttresses and trunks and tangle of looping lianas. In this dimness and bewildering chaos the trio might as well have been blind. The eyes of the tiny fleet were in the first boat.

The progress of the dugouts was almost stealthy. Not a paddle thumped or splashed, not a voice spoke. They moved with the alert caution born not of fear, but of wary readiness for any sudden event—like prowling jungle creatures which, themselves seeking quarry, must be ever on guard lest they become the hunted instead of the hunters.

For the past two days they had moved thus. The last fresh meat had been shot miles down the river, where a well-placed bullet from the rifle of McKay had downed a fat swamp deer. Since that day not a gun had been fired. The rations now were tough jerked beef and monkey meat, slabs of salt pirarucu fish, and farinha, varied by tinned delicacies from the stores of the Americans. Henceforth gunfire was taboo unless it should become necessary in self-defense.

At length the fore canoe halted with an abruptness that told of back strokes of the blades hidden under water. McKay, bowman of the trailing craft, also backed water, while his mates held their paddles rigid. The two boats drifted together.

"This is the place," Lourenço said, speaking low.

The Americans, scanning the shore, saw nothing to differentiate the spot from the rest of the wilderness growth. Yet Lourenço's tone was sure. Pedro's face also showed recognition of his surroundings. With no apparent motion of the paddles—though the wrists of the paddlers moved almost imperceptibly—the canoe of the bushmen floated to the bank. They picked up their rifles, twitched their bow up on land, and turned their faces to the forest.

"Stay here," was Pedro's subdued command, "until you hear the bird-call which we taught you down the river."

He and Lourenço faded into the dimness and were gone.

"Beats me how them guys find their way 'round," muttered Tim. "I could land here twenty times hand-runnin', but if I went away and then come back I'd never know the place."