"Return home with my warriors, Muviro," he instructed, "and hold every fighting man of the Waziri in readiness in the event that I find it necessary to send for you."

"Yes, Bwana," replied Muviro; "and how long shall we wait for a message before we set out for the Wiramwazi Mountains in search of you?"

"I shall take Nkima with me and if I need you I shall send him back to fetch and to guide you."

"Yes, Bwana," replied Muviro. "They will be in readiness--all the fighting men of the Waziri. Their weapons will be at hand by day and by night and fresh war-paint will be ready in every pot."

Tarzan swung his bow and his quiver of arrows across his back. Over his left shoulder and under his right arm lay the coils of his grass rope and at his hip dangled the hunting-knife of his long-dead sire. He picked up his short spear and stood for a moment with head up, sniffing the breeze. The firelight played upon his bronzed skin.

For a moment he stood thus, every sense alert. Then he called to Nkima in the tongue of the ape folk and as the little monkey scampered toward him, Tarzan of the Apes turned without a word of farewell and moved silently off into the jungle, his lithe carriage, his noiseless tread, his majestic mien suggesting to the mind of von Harben a personification of another mighty jungle animal, Numa the lion, king of beasts.

Chapter Two

ERICH VON HARBEN stepped from his tent upon the slopes of the Wiramwazi Mountains to look upon a deserted camp.

When he had first awakened, the unusual quiet of his surroundings had aroused within him a presentiment of ill, which was augmented when repeated calls for his body-servant, Gabula, elicited no response.

For weeks, as the safari had been approaching the precincts of the feared Wiramwazi, his men had been deserting by twos and threes until the preceding evening when they had made this camp well upon the mountain slopes only a terrified remnant of the original safari had remained with him. Now even these, overcome during the night by the terrors of ignorance and superstition, had permitted fear to supplant loyalty and had fled from the impending and invisible terrors of this frowning range, leaving their master alone with the bloodthirsty spirits of the dead.

A hasty survey of the camp site revealed that the men had stripped von Harben of everything. All of his supplies were gone and his gun carriers had decamped with his rifles and all of his ammunition, with the exception of a single Luger pistol and its belt of ammunition that had been in the tent with him.

Erich von Harben had had sufficient experience with these natives to understand fairly well the mental processes based upon their deep-rooted superstition that had led them to this seemingly inhuman and disloyal act and so he did not place so much blame upon them as might another less familiar with them.

While they had known their destination when they embarked upon the undertaking, their courage had been high in direct proportion to the great distance that they had been from the Wiramwazi, but in proportion as the distance lessened with each day's march their courage had lessened until now upon the very threshold of horrors beyond the ken of human minds the last vestige of self-control had deserted them and they had fled precipitately.

That they had taken his provisions, his rifles and his ammunition might have seemed the depth of baseness had von Harben not realized the sincerity of their belief that there could be no possible hope for him and that his immediate death was a foregone conclusion.

He knew that they had reasoned that under the circumstances it would be a waste of food to leave it behind for a man who was already as good as dead when they would need it for their return journey to their villages, and likewise, as the weapons of mortal man could avail nothing against the ghosts of Wiramwazi, it would have beeen a needless extravagance to have surrendered fine rifles and quantities of ammunition that von Harben could not use against his enemies of the spirit world.

Von Harben stood for some time looking down the mountain slope toward the forest, somewhere in the depths of which his men were hastening toward their own country. That he might overtake them was a possibility, but by no means a certainty, and if he did not he would be no better off alone in the jungle than he would be on the slopes of the Wiramwazi.

He faced about and looked up toward the rugged heights above him. He had come a long way to reach his goal, which now lay somewhere just beyond that serrated skyline, and he was of no mind to turn back now in defeat. A day or a week in these rugged mountains might reveal the secret of The Lost Tribe of legend, and surely a month would be sufficient to determine beyond a reasonable doubt that the story had no basis in fact, for von Harben believed that in a month he could fairly well explore such portions of the range as might naturally lend themselves to human habitation, where he hoped at best to find relics of the fabled tribe in the form of ruins or burial mounds. For to a man of von Harben's training and intelligence there could be no thought that The Lost Tribe of legend, if it had ever existed, could be anything more than a vague memory surrounding a few moldy artifacts and some crumbling bones.

It did not take the young man long to reach a decision and presently he turned back to his tent and, entering it, packed a few necessities that had been left to him in a light haversack, strapped his ammunition belt about him, and stepped forth once more to turn his face upward toward the mystery of the Wiramwazi.

In addition to his Luger, von Harben carried a hunting-knife and with this he presently cut a stout staff from one of the small trees that grew sparsely upon the mountainside against the time when he might find an alpenstock indispensable.

A mountain rill furnished him pure, cold water to quench his thirst, and he carried his pistol cocked, hoping that he might bag some small game to satisfy his hunger. Nor had he gone far before a hare broke cover, and as it rolled over to the crack of the Luger, von Harben gave thanks that he had devoted much time to perfecting himself in the use of small arms.

On the spot he built a fire and grilled the hare, after which he lit his pipe and lay at ease while he smoked and planned. His was not a temperament to be depressed or discouraged by seeming reverses, and he was determined not to be hurried by excitement, but to conserve his strength at all times during the strenuous days that he felt must lie ahead of him.

All day he climbed, choosing the long way when it seemed safer, exercising all the lore of mountain-climbing that he had accumulated, and resting often. Night overtook him well up toward the summit of the highest ridge that had been visible from the base of the range. What lay behind, he could not even guess, but experience suggested that he would find other ridges and frowning peaks before him.

He had brought a blanket with him from the last camp and in this he rolled up on the ground. From below there came the noises of the jungle subdued by distance--the yapping of jackals and faintly from afar the roaring of a lion.

Toward morning he was awakened by the scream of a leopard, not from the jungle far below, but somewhere upon the mountain slopes near by. He knew that this savage night prowler constituted a real menace, perhaps the greatest he would have to face, and he regretted the loss of his heavy rifle.

He was not afraid, for he knew that after all there was little likelihood that the leopard was hunting him or that it would attack him, but there was always that chance and so to guard against it he started a fire of dry wood that he had gathered for the purpose the night before. He found the warmth of the blaze welcome, for the night had grown cold, and he sat for some time warming himself.

Once he thought he heard an animal moving in the darkness beyond the range of the firelight, but he saw no shining eyes and the sound was not repeated. And then he must have slept, for the next thing that he knew it was daylight and only embers remained to mark where the beast fire had blazed.

Cold and without breakfast, von Harben continued the ascent from his cheerless camp, his eyes, under the constant urging of his stomach, always alert for food. The terrain offered few obstacles to an experienced mountain climber, and he even forgot his hunger in the thrill of expectancy with which he anticipated the possibilities hidden by the ridge whose summit now lay but a short distance ahead of him.

It is the summit of the next ridge that ever lures the explorer onward. What new sights lie just beyond? What mysteries will its achievement unveil to the eager eyes of the adventurer? Judgment and experience joined forces to assure him that when his eyes surmounted the ridge ahead they would be rewarded with nothing more startling than another similar ridge to be negotiated; yet there was always that other hope hanging like a shining beacon just below the next horizon, above which the rays of its hidden light served to illuminate the figments of his desire, and his imagination transformed the figments into realities.

Von Harben, sane and phlegmatic as he was, was now keyed to the highest pitch of excitement as he at last scaled the final barrier and stood upon the crest of the ridge. Before him stretched a rolling plateau, dotted with stunted wind-swept trees, and in the distance lay the next ridge that he had anticipated, but indistinct and impurpled by the haze of distance. What lay between him and those far hills? His pulse quickened at the thought of the possibilities for exploration and discovery that lay before him, for the terrain that he looked upon was entirely different from what he had anticipated. No lofty peaks were visible except in the far distance, and between him and them there must lie intriguing ravines and valleys--virgin fields at the feet of the explorer.

Eagerly, entirely forgetful of his hunger or his solitude, von Harben moved northward across the plateau. The land was gently rolling, rock-strewn, sterile, and uninteresting, and when he had covered a mile of it he commenced to have misgivings, for if it continued on without change to the dim hills in the distance, as it now seemed was quite likely the case, it could offer him neither interest nor sustenance.

As these thoughts were commencing to oppress him, he became suddenly conscious of a vague change in the appearance of the terrain ahead. It was only an impression of unreality. The hills far away before him seemed to rise out of a great void, and it was as though between him and them there existed nothing. He might have been looking across an inland sea to distant, hazy shores--a waterless sea, for nowhere was there any suggestion of water--and then suddenly he came to a halt, startled, amazed.