The savages that had shown such pluck in the instances described, now gave another striking proof of their courage.

At the moment the mystified explorers were discussing the strange appearance and actions of the white men, more than twenty of the athletic barbarians issued as stealthily as phantoms from the trail leading from the forest and crouched along the edge of the timber.

Their silence added impressiveness to the singular scene and prevented their movements being observed except by Bippo, who was so terrified that he could only tremble and point at them.

They were partly hidden by the shadow which put out a short distance from the fringe of the wood, but there could be no doubt of their hostile intentions. They assumed the form of a line, somewhat after the manner of the combatants in the square of the native village. This was to give free play to their arms in flinging their javelins.

The occasion was one in which the fate of the explorers depended upon their promptness and bravery. Anything like timidity or hesitation meant sure destruction, and the whites knew it.

"Into the boat!" commanded Ashman, addressing Bippo and his friends.

The words were like an electric shock to the helpers, who instantly clambered into the canoe and lay flat behind the luggage, where they were safe from the poisoned missiles that would soon be flying through the air.

Those natives, with their crude weapons, were only incumbrances in a crisis like the present.

The whites exchanged but a word or two and then opened the ball.

A savage, evidently the leader, and one who probably now saw the whites for the first time, had the audacity to step forward a couple of paces, and with a yell of defiance, raised his spear over his head.

Before he could launch the missile Jared Long sent a bullet through him, and then, shifting the muzzle of his Winchester toward the line of dusky figures, he blazed away as fast as he could sight the weapon and pull the trigger.

At the same instant the Professor and Ashman opened, and the bombardment which followed was enough to strike terror to the hearts of a hundred men.

It was more than the savages could stand, but, great as was their panic, most of them hurled one or two javelins apiece at the white men who stood fearlessly erect and combated them. They had come from their village prepared for a fight, and each warrior was provided with several of the poisoned missiles.

Before the explorers had emptied the magazines of their Winchesters not a live foe was left. The affrighted survivors, shrieking with terror, scrambled hastily back among the trees, some of them dragging the dead bodies, so that the spot was freed of the dusky miscreants with as much suddenness as it had been occupied by them.

There were plenty of shots left, and, after the disappearance of the savages, the whites fired into the woods, where they had vanished, not with the expectation of accomplishing anything more than adding to the panic.

When it was sure the wretches were gone, our friends made their preparations for leaving the spot, for nothing was clearer than that such was the wisest step to take.

It will be borne in mind that all the trouble had taken place on the left bank of the Xingu, no savages having been observed on the western bank. The daring of the savages could not be questioned. They had faced death repeatedly, and now, that they had the strongest of all motives—revenge—to prompt them, they were sure to use every means possible to bring about the ruin of the whites and their three native companions.

The forest, extending so close to the river, was a constant menace, for it afforded the best kind of shelter. Indeed, had the savages been less courageous and kept among the trees, taking a stealthy shot as the chance offered, they would have had a much better chance of doing what they wished and with less risk to themselves.

The javelins flung in blind desperation went wide of their mark, with the exception of one which whizzed over the canoe within a few inches of Bippo's head. The fellow was peeping furtively above the luggage, and heard the whizz of the missile passing fearfully close. He instantly ducked with such emphasis that he almost broke his nose against the bottom of the craft.

Striking the water beyond, the spear sank as abruptly as if it were a cannon ball.

The belief of our friends was that the troublesome natives were entirely confined to the left bank,............