ah!" rang out from behind him, immediately followed by a chorus of replies from different directions, as the great bulls crashed through the trees in answer to the summons of their fellow.
The black man halted at the first cry and looked about him. He could see nothing, but he knew the voice of the hairy tree men whom he and his kind feared, not alone because of the strength and ferocity of the savage beings, but as well through a superstitious terror engendered by the manlike appearance of the apes.
But Bulabantu was no coward. He heard the apes all about him; he knew that escape was probably impossible, so he stood his ground, his spear ready in his hand and a war cry trembling on his lips. He would sell his life dearly, would Bulabantu, under-chief of the village of Mbonga, the chief.
Tarzan and Tantor were but a short distance away when the first cry of the sentry rang out through the quiet jungle. Like a flash the ape-man leaped from the elephant's back to a near-by tree and was swinging rapidly in the direction of the clearing before the echoes of the first "Kreeg-ah" had died away. When he arrived he saw a dozen bulls circling a single Gomangani. With a blood-curdling scream Tarzan sprang to the attack. He hated the blacks even more than did the apes, and here was an opportunity for a kill in the open. What
