The heavy limb bent beneath the weight of the two beasts as Sheeta crept cautiously out upon it and Tarzan backed slowly away, growling. The wind had risen to the proportions of a gale so that even the greatest giants of the forest swayed, groaning, to its force and the branch upon which the two faced each other rose and fell like the deck of a storm-tossed ship. Goro was now entirely obscured, but vivid flashes of lightning lit up the jungle at brief intervals revealing the grim tableau of primitive passion upon the swaying limb.
Tarzan backed away drawing Sheeta farther from the stem of the tree and out upon the tapering branch where his footing became ever more precarious. The cat, infuriated by the pain of spear wounds, was overstepping the bounds of caution. Already he had reached a point where he could do little more than maintain a secure footing and it was this moment that Tarzan chose to charge. With a roar that mingled with the booming thunder from above he leaped toward the panther, who could only claw futilely with one huge paw while he clung to the branch with the others; but the ape-man did not come within that parabola of destruction. Instead he leaped above menacing claws and snapping fangs, turning in mid—air and alighting upon Sheeta's back, and at the instant of impact his knife struck deep into the tawny side. Then Sheeta, impelled by pain and hate and rage and the first law of Nature, went mad. Screaming and clawing he attempted to turn upon the ape—thing clinging to his back. For an in-
