His screams, echoing through the forest, brought his terrified companions from their shelters in time to see an indistinct form leap the boma and vanish into the darkness. They stood temporarily paralyzed by fright, listening to the diminishing cries of their comrade. Presently these ceased as suddenly as they had commenced. Then the headman found his voice.

"Simba!" he said.

"It was not Simba," declared another. "It ran high upon two legs, like a man. I saw it."

Presently from the dark jungle came a hideous, long-drawn cry. "That is the voice of neither man nor lion," said the headman.

"It is a demon," whispered another, and then they huddled about the fire, throwing dry wood upon it until its blaze had crackled high into the air.

In the darkness of the jungle Tarzan paused and laid aside his spear and bow, possession of which had permitted him to use but one hand in his abduction of the sentry. Now the fingers of his free hand closed upon the throat of his victim, putting a sudden period to his screams. Only for an instant did Tarzan choke the man; and when he relaxed his grasp upon the fellow's throat, the black made no further outcry, fearing to invite again the ungentle grip of those steel fingers. Quickly Tarzan jerked the fellow to his feet, relieved him of his knife and, grasping him by his thick wool, pushed him ahead of him into the jungle, after stooping to retrieve his spear and bow. It was then that he voiced the victory cry of the bull-ape, for the value of the effect that it would have not only upon his victim, but upon his fellows in the camp behind them.

Tarzan had no intention of harming the fellow. His quarrel was not with the innocent black tools of the white men; and, while he would not have hesitated to take the life of the black had it been necessary, he knew them well enough to know that he might effect his purpose with them as well without bloodshed as with it.

The whites could not accomplish anything without their black allies, and if Tarzan could successfully undermine the morale of the latter, the schemes of their masters would be as effectually thwarted as though he had destroyed them, since he was confident that they would not remain in a district where they were constantly reminded of the presence of a malign, supernatural enemy. Furthermore, this policy accorded better with Tarzan's grim sense of humor and, therefore, amused him, which the taking of life never did.

For an hour he marched his victim ahead of him in an utter silence, which he knew would have its effect upon the nerves of the black man. Finally he halted him, stripped his remaining clothing from him, and taking the fellow's loin cloth bound his wrists and ankles together loosely. Then, appropriating his cartridge belt and other belongings, Tarzan left him, knowing that the black would soon free himself from his bonds; yet, believing that he had made his escape, would remain for life convinced that he had narrowly eluded a terrible fate.

Satisfied with his night's work, Tarzan returned to the tree in which he had cached the carcass of Bara, ate once more and lay up in sleep until morning, when he again took up his search for La, seeking trace of her up the valley beyond the barrier cliff of Opar, in the general direction that her spoor had indicated she had gone, though, as a matter of fact, she had gone in precisely the opposite direction, down the valley.