It was the call of the stomach—the most compelling and insistent call which the jungle knows—that took Tarzan finally back to the trees and off in search of food, while Tantor continued his interrupted journey in the opposite direction.

For an hour the ape-man foraged. A lofty nest yielded its fresh, warm harvest. Fruits, berries, and tender plantain found a place upon his menu in the order that he happened upon them, for he did not seek such foods. Meat, meat, meat! It was always meat that Tarzan of the Apes hunted; but sometimes meat eluded him, as today.

And as he roamed the jungle his active mind busied itself not alone with his hunting, but with many other subjects. He had a habit of recalling often the events of the preceding days and hours. He lived over his visit with Tantor; he cogitated upon the digging blacks and the strange, covered pit they had left behind them. He wondered again and again what its purpose might be. He compared perceptions and arrived at judgments. He compared judgments, reaching conclusions—not always correct ones, it is true, but at least he used his brain for the purpose God intended it, which was the less difficult because he was not handicapped by the second-hand, and usually erroneous, judgments of others.

And as he puzzled over the covered pit, there loomed suddenly before his mental vision a huge, gray-black bulk which lumbered ponderously along a jungle trail. Instantly Tarzan tensed to the shock of a sudden fear. Decision and action usually occurred simultaneously in the life of the ape-man, and now he was away through the leafy branches ere the realization of the pit’s purpose had scarce formed in his mind.

Swinging from swaying limb to swaying limb, he raced through the middle terraces where the trees grew close together. Again he dropped to the ground and sped, silently and light of foot, over the carpet of decaying vegetation, only to leap again into the trees where the tangled undergrowth precluded rapid advance upon the surface.

In his anxiety he cast discretion to the winds. The caution of the beast was lost in the loyalty of the man, and so it came that he entered a large clearing, denuded of trees, without a thought of what might lie there or upon the farther edge to dispute the way with him.

He was half way across when directly in his path and but a few yards away there rose from a clump of tall grasses a half dozen chattering birds. Instantly Tarzan turned aside, for he knew well enough what manner of creature the presence of these little sentinels proclaimed. Simultaneously Buto, the rhinoceros, scrambled to his short legs and charged furiously. Haphazard charges Buto, the rhinoceros. With his weak eyes he sees but poorly even at short distances, and whether his erratic rushes are due to the panic of fear as he attempts to escape, or to the irascible temper with which he is generally credited, it is difficult to determine. Nor is the matter of little moment to one whom Buto charges, for if he be caught and tossed, the chances are that naught will interest him thereafter.

And today it chanced that Buto bore down straight upon Tarzan, across the few yards of knee-deep grass which separated them. Accident started him in the direction of the ape-man, and then his weak eyes discerned the enemy, and with a series of snorts he charged straight for him. The little rhino birds fluttered and circled about their giant ward. Among the branches of the trees at the edge of the clearing, a score or more monkeys chattered and scolded as the loud snorts of the angry beast sent them scurrying affrightedly to the upper terraces. Tarzan alone appeared indifferent and serene.

Directly in the path of the charge he stood. There had been no time to seek safety in the trees beyond the clearing, nor had Tarzan any mind to delay his journey because of Buto. He had met the stupid beast before and held him in fine contempt.

And now Buto was upon him, the massive head lowered and the long, heavy horn inclined for the frightful work for which nature had designed it; but as he struck upward, his weapon raked only thin air, for the ape-man had sprung lightly aloft with a catlike leap that carried him above the threatening horn to the broad back of the rhinoceros. Another spring and he was on the ground behind the brute and racing like a deer for the trees.