mediately he commenced to draw the rope rapidly back and forth across the tree trunk.
The hyenas, gaining courage, came closei. They sniffed at his legs; but when he struck at them with his free arms they slunk off. He knew that with the growth of hunger they would attack. Coolly, methodically, without haste, Tarzan drew the rope back and forth against the rough trunk of the small tree.
In the entrance to the cavern Bukawai fell asleep. He thought it would be some time before the beasts gained sufficient courage or hunger to attack the captive. Their growls and the cries of the victim would awaken him. In the meantime he might as well rest, and he did.
Thus the day wore on, for the hyenas were not famished, and the rope with which Tarzan was bound was a stronger one than that of his boyhood, which had parted so quickly to the chafing of the rough tree bark. Yet, all the while hunger was growing upon the beasts and the strands of the grass rope were wearing thinner and thinner. Bukawai slept.
It was late afternoon before one of the beasts, irritated by the gnawing of appetite, made a quick, growling dash at the ape-man. The noise awoke Bukawai. He sat up quickly and watched what went on within the crater. He saw the hungry hyena charge the man, leaping for the unprotected throat.
