“Back, pig-beast,” he howled. “Would you dare touch the Mammoth? You have gone mad.”

The Rhinoceros raised his head and retreated a step. The amazement, now shown in every line of his face, was a picture to see.

“You?” he gasped and choked.

“Yes, I.”

“Can you; will you fight?” the Rhinoceros demanded eagerly.

“I can and will. You shall see.”

“Good,” Wulli grunted. “When you are ready, begin.”

“But I have no weapon,” said the Ape Boy. “You have a horn; I nothing. Will you fight fair?”

The Rhinoceros nodded. The youth was making for the grotto when Wulli stopped him.

“That red beast with the hot breath?” he grumbled. “No; you must fight with something else. I have had enough of its bad smell.”