Tonight he had swung a wide circle—toward the east first and then toward the south, and now he was rounding back again into the north. His eyes, his ears and his keen nostrils were ever on the alert. Mingled with the sounds he knew, there were strange sounds—weird sounds which he never heard until after Kudu had sought his lair below the far edge of the big water—sounds which belonged to Goro, the moon—and to the mysterious period of Goro’s supremacy. These sounds often caused Tarzan profound speculation. They baffled him because he thought that he knew his jungle so well that there could be nothing within it unfamiliar to him. Sometimes he thought that as colors and forms appeared to differ by night from their familiar daylight aspects, so sounds altered with the passage of Kudu and the coming of Goro, and these thoughts roused within his brain a vague conjecture that perhaps Goro and Kudu influenced these changes. And what more natural that eventually he came to attribute to the sun and the moon personalities as real as his own? The sun was a living creature and ruled the day. The moon, endowed with brains and miraculous powers, ruled the night.

Thus functioned the untrained man-mind groping through the dark night of ignorance for an explanation of the things he could not touch or smell or hear and of the great, unknown powers of nature which he could not see.

As Tarzan swung north again upon his wide circle the scent of the Gomangani came to his nostrils, mixed with the acrid odor of wood smoke. The ape-man moved quickly in the direction from which the scent was borne down to him upon the gentle night wind. Presently the ruddy sheen of a great fire filtered through the foliage to him ahead, and when Tarzan came to a halt in the trees near it, he saw a party of half a dozen black warriors huddled close to the blaze. It was evidently a hunting party from the village of Mbonga, the chief, caught out in the jungle after dark. In a rude circle about them they had constructed a thorn boma which, with the aid of the fire, they apparently hoped would discourage the advances of the larger carnivora.

That hope was not conviction was evidenced by the very palpable terror in which they crouched, wide-eyed and trembling, for already Numa and Sabor were moaning through the jungle toward them. There were other creatures, too, in the shadows beyond the firelight. Tarzan could see their yellow eyes flaming there. The blacks saw them and shivered. Then one arose and grasping a burning branch from the fire hurled it at the eyes, which immediately disappeared. The black sat down again. Tarzan watched and saw that it was several minutes before the eyes began to reappear in twos and fours.

Then came Numa, the lion, and Sabor, his mate. The other eyes scattered to right and left before the menacing growls of the great cats, and then the huge orbs of the man-eaters flamed alone out of the darkness. Some of the blacks threw themselves upon their faces and moaned; but he who before had hurled the burning branch now hurled another straight at the faces of the hungry lions, and they, too, disappeared as had the lesser lights before them. Tarzan was much interested. He saw a new reason for the nightly fires maintained by the blacks—a reason in addition to those connected with warmth and light and cooking. The beasts of the jungle feared fire, and so fire was, in a measure, a protection from them. Tarzan himself knew a certain awe of fire. Once he had, in investigating an abandoned fire in the village of the blacks, picked up a live coal. Since then he had maintained a respectful distance from such fires as he had seen. One experience had sufficed.

For a few minutes after the black hurled the firebrand no eyes appeared, though Tarzan could hear the soft padding of feet all about him. Then flashed once more the twin fire spots that marked the return of the lord of the jungle and a moment later, upon a slightly lower level, there appeared those of Sabor, his mate.

For some time they remained fixed and unwavering—a constellation of fierce stars in the jungle night—then the male lion advanced slowly toward the boma, where all but a single black still crouched in trembling terror. When this lone guardian saw that Numa was again approaching, he threw another firebrand, and, as before, Numa retreated and with him Sabor, the lioness; but not so far, this time, nor for so long. Almost instantly they turned and began circling the boma, their eyes turning constantly toward the firelight, while low, throaty growls evidenced their increasing displeasure. Beyond the lions glowed the flaming eyes of the lesser satellites, until the black jungle was shot all around the black men’s camp with little spots of fire.

Again and again the black warrior hurled his puny brands at the two big cats; but Tarzan noticed that Numa paid little or no attention to them after the first few retreats. The ape-man knew by Numa’s voice that the lion was hungry and surmised that he had made up his mind to feed upon a Gomangani; but would he dare a closer approach to the dreaded flames?

Even as the thought was passing in Tarzan’s mind, Numa stopped his restless pacing and faced the boma. For a moment he stood motionless, except for the quick, nervous upcurving of his tail, then he walked deliberately forward, while Sabor moved restlessly to and fro where he had left her. The black man called to his comrades that the lion was coming, but they were too far gone in fear to do more than huddle closer together and moan more loudly than before.

Seizing a blazing branch the man cast it straight into the face of the lion. There was an angry roar, followed by a swift charge. With a single bound the savage beast cleared the boma wall as, with almost equal agility, the warrior cleared it upon the opposite side and, chancing the dangers lurking in the darkness, bolted for the nearest tree.