Werper reached out his hand toward the little pile that Tarzan had arranged upon a piece of flat wood before him.

"Let me see them," said the Belgian.

Tarzan placed a large palm over his treasure. He bared his fighting fangs, and growled. Werper withdrew his hand more quickly than he had advanced it. Tarzan resumed his playing with the gems, and his conversation with Werper as though nothing unusual had occurred. He had but exhibited the beast's jealous protective instinct for a possession. When he killed he shared the meat with Werper; but had Werper ever, by accident, laid a hand upon Tarzan's share, he would have aroused the same savage, and resentful warning.

From that occurrence dated the beginning of a great fear in the breast of the Belgian for his savage companion. He had never understood the transformation that had been wrought in Tarzan by the blow upon his head, other than to attribute it to a form of amnesia. That Tarzan had once been, in truth, a savage, jungle beast, Werper had not known, and so, of course, he could not guess that the man had reverted to the state in which his childhood and young manhood had been spent.

Now Werper saw in the Englishman a dangerous maniac, whom the slightest untoward accident might turn upon him with rending fangs. Not for a moment did Werper attempt to delude himself into the belief that he could defend himself successfully against an attack by the ape-man. His one hope lay in eluding him, and making for the far distant camp of Achmet Zek as rapidly as he could; but armed only with the sacrificial knife, Werper shrank from attempting the journey through the jungle. Tarzan constituted a protection that was by no means despicable, even in the face of the larger carnivora, as Werper had reason to acknowledge from the evidence he had witnessed in the Oparian temple.

Too, Werper had his covetous soul set upon the pouch of gems, and so he was torn between the various emotions of avarice and fear. But avarice it was that burned most strongly in his breast, to the end that he dared the dangers and suffered the terrors of constant association with him he thought a mad man, rather than give up the hope of obtaining possession of the fortune which the contents of the little pouch represented.

Achmet Zek should know nothing of these—these would be for Werper alone, and so soon as he could encompass his design he would reach the coast and take passage for America, where he could conceal himself beneath the veil of a new identity and enjoy to some measure the fruits of his theft. He had it all planned out, did Lieutenant Albert Werper, living in anticipation the luxurious life of the idle rich. He even found himself regretting that America was so provincial, and that nowhere in the new world was a city that might compare with his beloved Brussels.

It was upon the third day of their progress from Opar that the keen ears of Tarzan caught the sound of men behind them. Werper heard nothing above the humming of the jungle insects, and the chattering life of the lesser monkeys and the birds.

For a time Tarzan stood in statuesque silence, listening, his sensitive nostrils dilating as he assayed each passing breeze. Then he withdrew Werper into the concealment of thick brush, and waited. Presently, along the game trail that Werper and Tarzan had been following, there came in sight a sleek, black warrior, alert and watchful.

In single file behind him, there followed, one after another, near fifty others, each burdened with two dull-yellow ingots lashed upon his back. Werper recognized the party immediately as that which had accompanied Tarzan on his journey to Opar. He glanced at the ape-man; but in the savage, watchful eyes he saw no recognition of Basuli and those other loyal Waziri.

When all had passed, Tarzan rose and emerged from concealment. He looked down the trail in the direction the party had gone. Then he turned to Werper.

"We will follow and slay them," he said.

"Why?" asked the Belgian.

"They are black," explained Tarzan. "It was a black who killed Kala. They are the enemies of the Manganis."

Werper did not relish the idea of engaging in a battle with Basuli and his fierce fighting men. And, again, he had welcomed the sight of them returning toward the Greystoke bungalow, for he had begun to have doubts as to his ability to retrace his steps to the Waziri country. Tarzan, he knew, had not the remotest idea of whither they were going. By keeping at a safe distance behind the laden warriors, they would have no difficulty in following them home. Once at the bungalow, Werper knew the way to the camp of Achmet Zek. There was still another reason why he did not wish to interfere with the Waziri—they were bearing the great burden of treasure in the direction he wished it borne. The farther they took it, the less the distance that he and Achmet Zek would have to transport it.

He argued with the ape-man therefore, against the latter's desire to exterminate the blacks, and at last he prevailed upon Tarzan to follow them in peace, saying that he was sure they would lead them out of the forest into a rich country, teeming with game.

It was many marches from Opar to the Waziri country; but at last came the hour when Tarzan and the Belgian, following the trail of the warriors, topped the last rise, and saw before them the broad Waziri plain, the winding river, and the distant forests to the north and west.

A mile or more ahead of them, the line of warriors was creeping like a giant caterpillar through the tall grasses of the plain. Beyond, grazing herds of zebra, hartebeest, and topi dotted the level landscape, while closer to the river a bull buffalo, his head and shoulders protruding from the reeds watched the advancing blacks for a moment, only to turn at last and disappear into the safety of his dank and gloomy retreat.

Tarzan looked out across the familiar vista with no faintest gleam of recognition in his eyes.