"It is coming in this direction. It cannot help but see us, and whatever living thing they see they attack."

"Have you ever been attacked by one?" asked Tarzan.

"Yes," replied Thoar; "but only when there was no tree or cave. The men of Zoram are not ashamed to admit that they fear the mighty thipdars."

"But if you have killed them in the past, why may we not kill this one?" demanded the ape-man.

"We may," replied Thoar, "but I have never chanced to have an encounter with one, except when there were a number of my tribesmen with me. The lone hunter who goes forth and never returns is our reason for fearing the thipdar. Even when there are many of us to fight them, always there are some killed and many injured."

"It comes," said Tar-gash, pointing.

"It comes," said Thoar, grasping his spear more firmly.

Down to their ears came a sound resembling the escaping of steam through a petcock.

"It has seen us," said Thoar.

Tarzan laid his spear upon the ground at his feet, plucked a handful of arrows from his quiver and fitted one to his bow. Tar-gash swung his club slowly to and fro and growled.