above her with this member she inserted the fifth peg in one of the holes of the center row and then, alternately hanging by her tail, her feet, or her hands, she moved the pegs upward to new holes, thus carrying her stairway with her as she ascended.

At the summit of the cliff a gnarled tree exposed its time-worn roots above the topmost holes forming the last step from the sheer face of the precipice to level footing. This was the last avenue of escape for members of the tribe hard pressed by enemies from below. There were three such emergency exits from the village and it were death to use them in other than an emergency. This Pan-at-lee well knew; but she knew, too, that it were worse than death to remain where the angered Es-sat might lay hands upon her.

When she had gained the summit, the girl moved quickly through the darkness in the direction of the next gorge which cut the mountain-side a mile beyond Kor-ul-JA. It was the Gorge-of-water, Kor-ul-lul, to which her father and two brothers had been sent by Es-sat ostensibly to spy upon the neighboring tribe. There was a chance, a slender chance, that she might find them; if not there was the deserted Kor-ul-GRYF several miles beyond, where she might hide indefinitely from man if she could elude the frightful monster from which the gorge derived its name and whose presence there had rendered its caves uninhabitable for generations.

Pan-at-lee crept stealthily along the rim of the Kor-ul-lul. Just where her father and brothers would watch she did not know. Sometimes their spies remained upon the rim, sometimes they watched from the gorge's bottom. Pan-at-lee was at a loss to know what to do or where to go. She felt very small and helpless alone in the vast darkness of the night. Strange noises fell upon her ears. They came from the lonely reaches of the towering mountains above her, from far away in the invisible valley and from the nearer foothills and once, in the distance, she heard what she thought was the bellow of a bull GRYF. It came from the direction of the Kor-ul-GRYF. She shuddered.

Presently there came to her keen ears another sound. Something approached her along the rim of the gorge. It was coming from above. She halted, listening. Perhaps it was her father, or a brother. It was coming closer. She strained her eyes through the darkness. She did not move—she scarcely breathed. And then, of a sudden, quite close it seemed, there blazed through the black night two yellow-green spots of fire.

Pan-at-lee was brave, but as always with the primitive, the darkness held infinite terrors for her. Not alone the terrors of the known but more frightful ones as well—those of the unknown. She had passed through much this night and her nerves were keyed to the highest pitch—raw, taut nerves, they were, ready to react in an exaggerated form to the slightest shock.

But this was no slight shock. To hope for a father and a brother and to see death instead glaring out of the darkness! Yes, Pan-at-lee was brave, but she was not of iron. With a shriek that reverberated among the hills she turned and fled along the rim of Kor-ul-lul and behind her, swiftly, came the devil-eyed lion of the mountains of Pal-ul-don.

Pan-at-lee was lost. Death was inevitable. Of this there could be no doubt, but to die beneath the rending fangs of the carnivore, congenital terror of her kind—it was unthinkable. But there was an alternative. The lion was almost upon her—another instant and he would seize her. Pan-at-lee turned sharply to her left. Just a few steps she took in the new direction before she disappeared over the rim of Kor-ul-lul. The baffled lion, planting all four feet, barely stopped upon the verge of the abyss. Glaring down into the black shadows beneath he mounted an angry roar.

Through the darkness at the bottom of Kor-ul-JA, Om-at led the way toward the caves of his people. Behind him came Tarzan and Ta-den. Presently they halted beneath a great tree that grew close to the cliff.

"First," whispered Om-at, "I will go to the cave of Pan-at-lee. Then will I seek the cave of my ancestors to have speech with my own blood. It will not take long. Wait here—I shall return soon. Afterward shall we go together to Ta-den's people."

He moved silently toward the foot of the cliff up which Tarzan could presently see him ascending like a great fly on a wall. In the dim light the ape-man could not see the pegs set in the face of the cliff. Om-at moved warily. In the lower tier of caves there should be a sentry. His knowledge of his people and their customs told him, however, that in all probability the sentry was asleep. In this he was not mistaken, yet he did not in any way abate his wariness. Smoothly and swiftly he ascended toward the cave of Pan-at-lee while from below Tarzan and Ta-den watched him.

"How does he do it?" asked Tarzan. "I can see no foothold upon that vertical surface and yet he appears to be climbing with the utmost ease."

Ta-den explained the stairway of pegs. "You could ascend easily," he said, "although a tail would be of great assistance."

They watched until Om-at was about to enter the cave of Pan-at-lee without seeing any indication that he had been observed and then, simultaneously, both saw a head appear in the mouth of one of the lower caves. It was quickly evident that its owner had discovered Om-at for immediately he started upward in pursuit. Without a word Tarzan and Ta-den sprang forward toward the foot of the cliff. The pithecanthropus was the first to reach it and the ape-man saw him spring upward for a handhold on the lowest peg above him. Now Tarzan saw other pegs roughly paralleling each other in zigzag rows up the cliff face. He sprang and caught one of these, pulled himself upward by one hand until he could reach a second with his other hand; and when he had ascended far enough to use his feet, discovered that he could make rapid progress. Ta-den was outstripping him, however, for these precarious ladders were no novelty to him and, further, he had an advantage in possessing a tail.

Nevertheless, the ape-man gave a good account of himself, being presently urged to redoubled efforts by the fact that the Waz-don above Ta-den glanced down and discovered his pursuers just before the Ho-don overtook him. Instantly a wild cry shattered the silence of the gorge—a cry that was immediately answered by hundreds of savage throats as warrior after warrior emerged from the entrance to his cave.

The creature who had raised the alarm had now reached the recess before Pan-at-lee's cave and here he halted and turned to give battle to Ta-den. Unslinging his club which had hung down his back from a thong about his neck he stood upon the level floor of the entrance-way effectually blocking Ta-den's ascent. From all directions the warriors of Kor-ul-JA were swarming toward the interlopers. Tarzan, who had reached a point on the same level with Ta-den but a little to the latter's left, saw that nothing short of a miracle could save them. Just at the ape-man's left was the entrance to a cave that either was deserted or whose occupants had not as yet been aroused, for the level recess remained unoccupied. Resourceful was the alert mind of Tarzan of the Apes and quick to respond were the trained muscles. In the time that you or I might give to debating an action he would accomplish it and now, though only seconds separated his nearest antagonist from him, in the brief span of time at his disposal he had stepped into the recess, unslung his long rope and leaning far out shot the sinuous noose, with the precision of long habitude, toward the menacing figure wielding its heavy club above Ta-den. There was a momentary pause of the rope-hand as the noose sped toward its goal, a quick movement of the right wrist that closed it upon its victim as it settled over his head and then a surging tug as, seizing the rope in both hands, Tarzan threw back upon it all the weight of his great frame.

Voicing a terrified shriek, the Waz-don lunged headforemost from the recess above Ta-den.