for something in the appearance or the voice of the attacker aroused within the ape-man a feeling of belligerent antagonism that would not be denied. With a scream that carried no human note, Tarzan leaped straight at the throat of the attacker.
The impetuosity of this act and the weight and momentum of his body carried the bull backward, clutching and clawing for support, down through the leafy branches of the tree. For fifteen feet the two fell, Tarzan's teeth buried in the jugular of his opponent, when a stout branch stopped their descent. The bull struck full upon the small of his back across the limb, hung there for a moment with the ape-man still upon his breast, and then toppled over toward the ground.
Tarzan had felt the instantaneous relaxation of the body beneath him after the heavy impact with the tree limb, and as the other turned completely over and started again upon its fall toward the ground, he reached forth a hand and caught the branch in time to stay his own descent, while the ape dropped like a plummet to the foot of the tree.
Tarzan looked downward for a moment upon the still form of his late antagonist, then he rose to his full height, swelled his deep chest, smote upon it with his clenched fist and roared out the uncanny challenge of the victorious bull ape.
Even Sheeta, the panther, crouched for a spring at the edge of the little clearing, moved uneasily as
