might have attempted to drive them away with menacing spear, or well-aimed hatchet, and thus have drawn down upon him a half dozen or more ferocious bulls against which no single warrior, however doughty, might have lived long enough to count his antagonists. Threatening and unfriendly as the apes seemed the cave man really looked upon them as friends and allies, since between them and his own people there existed a species of friendly alliance, due no doubt to the similarity of their form and structure. In that long gone age when the world was young and its broad bosom teemed with countless thousands of carnivorous beasts and reptiles, and other myriads blackened the bosoms of its inland seas, and filled its warm, moist air with the flutter of their mighty, bat-like wings, man's battle for survival stretched from sun to sun—there was no respite. His semiarboreal habits took him often into the domains of the great and lesser apes, and from this contact had arisen what might best be termed an armed truce, for they alone of all the other inhabitants of the earth had spoken languages, both meager it is true, yet sufficient to their primitive wants, and as both languages had been born of the same needs to deal with identical conditions there were many words and phrases identical to both. Thus the troglodyte and the primordial ape could converse when necessity demanded, and as Nu traversed their country he understood their grumbling and chattering merely as warnings to him against the performance of any overt act. Had danger lurked in his path the hairy ones would have warned him of that too, for of such was their service to man who in return often hunted the more remorseless of their enemies, driving them from the land of the anthropoids. On and on went Nu occasionally questioning the hairy ones he encountered for word of Oo, and always the replies confirmed him in his belief that he should come upon the man eater before the sun crawled into its dark cave for the night. And so he did. He had passed out of the heavier vegetation, and was ascending a gentle rise that terminated in low volcanic cliffs when there came down upon the breeze to his alert nostrils the strong scent of Oo. There was little or no cover now, other than the rank jungle grass that overgrew the slope, and an occasional lofty fern rearing its tufted pinnacle a hundred feet above the ground; but Nu was in no way desirous of cover. Cover that would protect him from the view of Oo would hide Oo from him. He was not afraid that the saber-toothed tiger would run away from him—that was not Oo's way—but he did not wish to come unexpectedly upon the animal in the thick grass.