Frothing and shrieking in the insanity of his fury, Kerchak looked about for the object of his greatest hatred, and there, upon a near-by limb, he saw him sitting.

"Come down, Tarzan, great killer," cried Kerchak."Come down and feel the fangs of a greater! Do mighty fighters fly to the trees at the first approach of danger?" And then Kerchak emitted the volleying challenge of his kind.

Quietly Tarzan dropped to the ground.Breathlessly the tribe watched from their lofty perches as Kerchak, still roaring, charged the relatively puny figure.

Nearly seven feet stood Kerchak on his short legs.His enormous shoulders were bunched and rounded with huge muscles.The back of his short neck was as a single lump of iron sinew which bulged beyond the base of his skull, so that his head seemed like a small ball protruding from a huge mountain of flesh.

His back-drawn, snarling lips exposed his great fighting fangs, and his little, wicked, blood-shot eyes gleamed in horrid reflection of his madness.

Awaiting him stood Tarzan, himself a mighty muscled animal, but his six feet of height and his great rolling sinews seemed pitifully inadequate to the ordeal which awaited them.

His bow and arrows lay some distance away where he had dropped them while showing Sabor's hide to his fellow apes, so that he confronted Kerchak now with only his hunting knife and his superior intellect to offset the ferocious strength of his enemy.

As his antagonist came roaring toward him, Lord Greystoke tore his long knife from its sheath, and with an answering challenge as horrid and bloodcurdling as that of the beast he faced, rushed swiftly to meet the attack.He was too shrewd to allow those long hairy arms to encircle him, and just as their bodies were about to crash together, Tarzan of the Apes grasped one of the huge wrists of his assailant, and, springing lightly to one side, drove his knife to the hilt into Kerchak's body, below the heart.

Before he could wrench the blade free again, the bull's quick lunge to seize him in those awful arms had torn the weapon from Tarzan's grasp.

Kerchak aimed a terrific blow at the ape-man's head with the flat of his hand, a blow which, had it landed, might easily have crushed in the side of Tarzan's skull.

The man was too quick, and, ducking beneath it, himself delivered a mighty one, with clenched fist, in the pit of Kerchak's stomach.

The ape was staggered, and what with the mortal wound in his side had almost collapsed, when, with one mighty effort he rallied for an instant--just long enough to enable him to wrest his arm free from Tarzan's grasp and close in a terrific clinch with his wiry opponent.

Straining the ape-man close to him, his great jaws sought Tarzan's throat, but the young lord's sinewy fingers were at Kerchak's own before the cruel fangs could close on the sleek brown skin.

Thus they struggled, the one to crush out his opponent's life with those awful teeth, the other to close forever the windpipe beneath his strong grasp while he held the snarling mouth from him.

The greater strength of the ape was slowly prevailing, and the teeth of the straining beast were scarce an inch from Tarzan's throat when, with a shuddering tremor, the great body stiffened for an instant and then sank limply to the ground.

Kerchak was dead.

Withdrawing the knife that had so often rendered him master of far mightier muscles than his own, Tarzan of the Apes placed his foot upon the neck of his vanquished enemy, and once again, loud through the forest rang the fierce, wild cry of the conqueror.

And thus came the young Lord Greystoke into the kingship of the Apes.