batting his blood-shot eyes. Teeka half raised herself and looked at Tarzan. Did she guess the cause of his perturbation? Who may say? At any rate, she was feminine, and so she reached up and scratched Taug behind one of his small, flat ears.

Tarzan saw, and in the instant that he saw, Teeka was no longer the little playmate of an hour ago; instead she was a wondrous thing—the most wondrous in the world—and a possession for which Tarzan would fight to the death against Taug or any other who dared question his right of proprietorship.

Stooped, his muscles rigid and one great shoulder turned toward the young bull, Tarzan of the Apes sidled nearer and nearer. His face was partly averted, but his keen gray eyes never left those of Taug, and as he came, his growls increased in depth and volume.

Taug rose upon his short legs, bristling. His fighting fangs were bared. He, too, sidled, stiff-legged, and growled.

"Teeka is Tarzan's," said the ape-man, in the low gutturals of the great anthropoids.

"Teeka is Taug's," replied the bull ape.

Thaka and Numgo and Gunto, disturbed by the growlings of the two young bulls, looked up half apathetic, half interested. They were sleepy, but they sensed a fight. It would break the monotony of the humdrum jungle life they led.

Coiled about his shoulders was Tarzan's long grass rope, in his hand was the hunting knife of the long-dead father he had never known. In Taug's little brain lay a great respect for the shiny bit of sharp metal which the ape-boy knew so well how to use. With it had he slain Tublat, his fierce foster father, and Bolgani, the gorilla. Taug knew these things, and so he came warily, circling about Tarzan in search of an opening. The latter, made cautious because of his lesser bulk and the inferiority of his natural armament, followed similar tactics.

For a time it seemed that the altercation would follow the way of the majority of such differences between members of the tribe and that one of them would finally lose interest and wander off to prosecute some other line of endeavor. Such might have been the end of it had the CASUS BELLI been other than it was; but Teeka was flattered at the attention that was being drawn to her and by the fact that these two young bulls were contemplating battle on her account. Such a thing never before had occurred in Teeka's brief life. She had seen other bulls battling for other and older shes, and in the depth of her wild little heart she had longed for the day when the jungle grasses would be reddened with the blood of mortal combat for her fair sake.

So now she squatted upon her haunches and insulted both her admirers impartially. She hurled taunts at them for their cowardice, and called them vile names, such as Histah, the snake, and Dango, the hyena. She threatened to call Mumga to chastise them with a stick—Mumga, who was so old that she could no longer climb and so toothless that she was forced to confine her diet almost exclusively to bananas and grub-worms.

The apes who were watching heard and laughed. Taug was infuriated. He made a sudden lunge for Tarzan, but the ape-boy leaped nimbly to one side, eluding him, and with the quickness of a cat wheeled and leaped back again to close quarters. His hunting knife was raised above his head as he came in, and he aimed a vicious blow at Taug's neck. The ape wheeled to dodge the weapon so that the keen blade struck him but a glancing blow upon the shoulder.

The spurt of red blood brought a shrill cry of delight from Teeka. Ah, but this was something worth while! She glanced about to see if others had witnessed this evidence of her popularity. Helen of Troy was never one whit more proud than was Teeka at that moment.

If Teeka had not been so absorbed in her own vaingloriousness she might have noted the rustling of leaves in the tree above her—a rustling which was not caused by any movement of the wind, since there was no wind. And had she looked up she might have seen a sleek body crouching almost directly over her and wicked yellow eyes glaring hungrily down upon her, but Teeka did not look up.

With his wound Taug had backed off growling horribly. Tarzan had followed him, screaming insults at him, and menacing him with his brandishing blade. Teeka moved from beneath the tree in an effort to keep close to the duelists.

The branch above Teeka bent and swayed a trifle with the movement of the body of the watcher stretched along it. Taug had halted now and was preparing to make a new stand. His lips were flecked with foam, and saliva drooled from his jowls. He stood with head lowered and arms outstretched, preparing for a sudden charge to close quarters. Could he but lay his mighty hands upon that soft, brown skin the battle would be his. Taug considered Tarzan's manner of fighting unfair. He would not close. Instead, he leaped nimbly just beyond the reach of Taug's muscular fingers.

The ape-boy had as yet never come to a real trial of strength with a bull ape, other than in play, and so he was not at all sure that it would be safe to put his muscles to the test in a life and death struggle. Not that he was afraid, for Tarzan knew nothing of fear. The instinct of self-preservation gave him caution—that was all. He took risks only when it seemed necessary, and then he would hesitate at nothing.

His own method of fighting seemed best fitted to his build and to his armament. His teeth, while strong and sharp, were, as weapons of offense, pitifully inadequate by comparison with the mighty fighting fangs of the anthropoids. By dancing about, just out of reach of an antagonist, Tarzan could do infinite injury with his long, sharp hunting knife, and at the same time escape many of the painful and dangerous wounds which would be sure to follow his falling into the clutches of a bull ape.

And so Taug charged and bellowed like a bull, and Tarzan of the Apes danced lightly to this side and that, hurling jungle billingsgate at his foe, the while he nicked him now and again with his knife.

There were lulls in the fighting when the two would stand panting for breath, facing each other, mustering their wits and their forces for a new onslaught. It was during a pause such as this that Taug chanced to let his eyes rove beyond his foeman. Instantly the entire aspect of the ape altered. Rage left his countenance to be supplanted by an expression of fear.

With a cry that every ape there recognized, Taug turned and fled. No need to question him—his warning proclaimed the near presence of their ancient enemy.

Tarzan started to seek safety, as did the other members of the tribe, and as he did so he heard a panther's scream mingled with the frightened cry of a she-ape. Taug heard, too; but he did not pause in his flight.

With the ape-boy, however, it was different. He looked back to see if any member of the tribe was close pressed by the beast of prey, and the sight that met his eyes filled them with an expression of horror.

Teeka it was who cried out in terror as she fled across a little clearing toward the trees upon the opposite side, for after her leaped Sheeta, the panther, in easy, graceful bounds. Sheeta appeared to be in no hurry. His meat was assured, since even though the ape reached the trees ahead of him she could not climb beyond his clutches before he could be upon her.

Tarzan saw that Teeka must die. He cried to Taug and the other bulls to hasten to Teeka's assistance, and at the same time he ran toward the pursuing beast, taking down his rope as he came. Tarzan knew that once the great bulls were aroused none of the jungle, not even Numa, the lion, was anxious to measure fangs with them, and that if all those of the tribe who chanced to be present today would charge, Sheeta, the great cat, would doubtless turn tail and run for his life.

Taug heard, as did the others, but no one came to Tarzan's assistance or Teeka's rescue, and Sheeta was rapidly closing up the distance between himself and his prey.

The ape-boy, leaping after the