Tarzan of the Apes was moving away into the forest. He turned once and repeated his command, "Follow me!"

"I haven't thanked you yet for getting me out of that mess," said Obroski as he moved after the retreating figure of the stranger. "It was certainly decent of you. I'd have been dead by now if it hadn't been for you."

The ape-man moved on in silence, and Obroski followed him. The silence preyed a little upon his nerves. It seemed to bear out his deduction that the man was not quite normal, not as other men. A normal man would have been asking and answering innumerable questions had he met a stranger for the first time under such exciting circumstances.

And Obroski's deductions were not wholly inaccurate—Tarzan is not as other men; the training and the instincts of the wild beast have given him standards of behavior and a code of ethics peculiarly his own. For Tarzan there are times for silence and times for speech. The depths of the night, when hunting beasts are abroad, is no time to go gabbling through the jungle; nor did he ever care much for speech with strangers unless he could watch their eyes and the changing expressions upon their faces, which often told him more than their words were intended to convey.

So in the silence they moved through the forest, Obroski keeping close behind the ape-man lest he lose sight of him in the darkness. Ahead of them a lion roared; and the American wondered if his companion would change his course or take refuge in a tree, but he did neither. He kept on in the direction they had been going.

Occasionally the voice of the lion sounded ahead of them, always closer. Obroski, unarmed and practically naked, felt utterly helpless and, not unaccountably, nervous. Nor was his nervousness allayed when a cry, half roar and half weird scream, burst from the throat of his companion.

After that he heard nothing from the lion for some time; then, seemingly just ahead of them, he heard throaty, coughing grunts. The lion! Obroski could scarcely restrain a violent urge to scale a tree, but he steeled himself and kept on after his guide.

Presently they came to an opening in the forest beside a river. The moon had risen. Its mellow light flooded the scene, casting deep shadows where tree and shrub dotted the grass carpeted clearing, dancing on the swirling ripples of the river.

But the beauty of the scene held his eye for but a brief instant as though through the shutter of a camera; then it was erased from his consciousness by a figure looming large ahead of them in the full light of the African moon. A great lion stood in the open watching them as they approached. Obroski saw the black mane ripple in the night wind, the sheen of the yellow body in the moonlight. Now, beyond him, rose a lioness. She growled.

The stranger turned to Obroski. "Stay where you are," he said. "I do not know this Sabor; she may be vicious."