heart is turning to water by contact with the soft, weak creatures of civilization." But yet he smiled, nor was he sorry that he had given way to the dictates of a kindly impulse.
As Tarzan tore the flesh from that portion of the kill he had retained for himself his eyes were taking in each detail of the scene below. He saw the avidity with which Numa devoured the carcass; he noted with growing admiration the finer points of the beast, and also the cunning construction of the trap. The ordinary lion pit with which Tarzan was familiar had stakes imbedded in the bottom, upon whose sharpened points the hapless lion would be impaled, but this pit was not so made. Here the short stakes were set at intervals of about a foot around the walls near the top, their sharpened points inclining downward so that the lion had fallen unhurt into the trap but could not leap out because each time he essayed it his head came in contact with the sharp end of a stake above him.
Evidently, then, the purpose of the Wamabos was to capture a lion alive. As this tribe had no contact whatsoever with white men in so far as Tarzan knew, their motive was doubtless due to a desire to torture the beast to death that they might enjoy to the utmost his dying agonies.
Having fed the lion, it presently occurred to Tarzan that his act would be futile were he to leave the beast to the mercies of the blacks, and then too it occurred to him that he could derive more pleasure through causing the blacks discomfiture than by leaving Numa to his fate. But how was he to release him? By removing two stakes there would be left plenty of room for the lion to leap from the pit, which was not of any great depth. However, what assurance had Tarzan that Numa would not leap out instantly the way to freedom was open, and before the ape-man could gain the safety of the trees? Regardless of the fact that Tarzan felt no such fear of the lion as you and I might experience under like circumstances, he yet was imbued with the sense of caution that is necessary to all creatures of the wild if they are to survive. Should necessity require, Tarzan could face Numa in battle, although he was not so egotistical as to think that he could best a full-grown lion in mortal combat other than through accident or the utilization of the cunning of his superior man-mind. To lay himself liable to death futilely, he would have considered as reprehensible as to have shunned danger in time of necessity; but when Tarzan elected to do a thing he usually found the means to accomplish it.
He had now fully determined to liberate Numa, and having so determined, he would accomplish it even though it entailed considerable personal risk. He knew that the lion would be occupied with his feeding for some time, but he also knew that while feeding he would be doubly resentful of any fancied interference. Therefore Tarzan must work with caution.
Coming to the ground at the side of the pit, he examined the stakes and as he did so was rather surprised to note that Numa gave no evidence of anger at his approach. Once he turned a searching gaze upon the ape-man for a moment and then returned to the flesh of Bara. Tarzan felt of the stakes and tested them with his weight. He pulled upon them with the muscles of his strong arms, presently discovering that by working them back and forth he could loosen them: and then a new plan was suggested to him so that he fell to work excavating with his knife at a point above where one of the stakes was imbedded. The loam was soft and easily removed, and it was not long until Tarzan had exposed that part of one of the stakes which was imbedded in the wall of the pit to almost its entire length, leaving only enough imbedded to prevent the stake from falling into the excavation. Then he turned his attention to an adjoining stake and soon had it similarly exposed, after which he threw the noose of his grass rope over the two and swung quickly to the branch of the tree above. Here he gathered in the slack of the rope and, bracing himself against the bole of the tree, pulled steadily upward. Slowly the stakes rose from the trench in which they were imbedded and with them rose Numa's suspicion and growling.
Was this some new encroachment upon his rights and his liberties? He was puzzled and, like all lions, being short of temper, he was irritated. He had not minded it when the Tarmangani squatted upon the verge of the pit and looked down upon him, for had not this Tarmangani fed him? But now something else was afoot and the suspicion of the wild beast was aroused. As he watched, however, Numa saw the stakes rise slowly to an erect position, tumble against each other and then fall backwards out of his sight upon the surface of the ground above. Instantly the lion grasped the possibilities of the situation, and, too, perhaps he sensed the fact that the man-thing had deliberately opened a way for his escape. Seizing the remains of Bara in his great jaws, Numa, the lion, leaped agilely from the pit of the Wamabos and Tarzan of the Apes melted into the jungles to the east.
On the surface of the ground or through the swaying branches of the trees the spoor of man or beast was an open book to the ape-man, but even his acute senses were baffled by the spoorless trail of the airship. Of what good were eyes, or ears, or the sense of smell in following a thing whose path had lain through the shifting air thousands of feet above the tree tops? Only upon his sense of direction could Tarzan depend in his search for the fallen plane. He could not even judge accurately as to the distance it might lie from him, and he knew that from the moment that it disappeared beyond the hills it might have traveled a considerable distance at right angles to its original course before it crashed to earth. If its occupants were killed or badly injured the ape-man might search futilely in their immediate vicinity for some time before finding them.
There was but one thing to do and that was to travel to a point as close as possible to where he judged the plane had landed, and then to follow in ever-widening circles until he picked up their scent spoor. And this he did.
Before he left the valley of plenty he made several kills and carried the choicest cuts of meat with him, leaving all the dead weight of bones behind. The dense vegetation of the jungle terminated at the foot of the western slope, growing less and less abundant as he neared the summit beyond which was a sparse growth of sickly scrub and sunburned grasses, with here and there a gnarled and hardy tree that had withstood the vicissitudes of an almost waterless existence.
From the summit of the hills Tarzan's keen eyes searched the arid landscape before him. In the distance he discerned the ragged tortuous lines that marked the winding course of the hideous gorges which scored the broad plain at intervals—the terrible gorges that had so nearly claimed his life in punishment for his temerity in attempting to invade the sanctity of their ancient solitude.
For two days Tarzan sought futilely for some clew to the whereabouts of the machine or its occupants. He cached portions of his kills at different points, building cairns of rock to mark their locations. He crossed the first deep gorge and circled far beyond it. Occasionally he stopped and called aloud, listening for some response but only silence rewarded him—a sinister silence that his cries only accentuated.
Late in the evening of the second day he came to the well-remembered gorge in which lay the clean-picked bones of the ancient adventurer, and here, for the first time, Ska, the vulture, picked up his trail. "Not this time, Ska," cried the ape-man in a taunting voice, "for now indeed is Tarzan Tarzan. Before, you stalked the grim skeleton of a Tarmangani and even then you lost. Waste not your time upon Tarzan of the Apes in the full of his strength." But still Ska, the vulture, circled and soared above him, and the ape-man, notwithstanding his boasts, felt a shudder of apprehension. Through his brain ran a persistent and doleful chant to which he involuntarily set two words, repeated over and over again in horrible monotony: "Ska knows! Ska knows!" until, shaking himself in anger, he picked up a rock and hurled it at the grim scavenger.
Lowering himself over the precipitous side of the gorge Tarzan half clambered and half slid to the sandy floor beneath. He had come upon the rift at almost the exact spot at which he had clambered from it weeks before, and there he saw, just as he had left it, just, doubtless, as it had lain for centuries, the mighty skeleton and its mighty armor.
As he stood looking down upon this grim reminder that another man of might had succumbed to the cruel powers of the desert, he was brought to startled attention by the report of a firearm, the sound of which came from the depths of the gorge to the south of him, and reverberated along the steep walls of the narrow rift.
Chapter
