chew my foot off," said Whopper. He stretched himself. "Time for me to
stand guard?"

"I think you had better. I am so tired I feel like sleeping standing
up," answered Shep.

Whopper arose, and waiting to make certain that his companion was wide
awake, Shep threw himself on the couch, which had been formed of some
leaves found at the rear of the hollow. He soon fell into a troubled
sleep, which lasted about three hours, when he awoke at the sound of
Whopper's voice calling him.

"Is it time to get up?" he questioned, sleepily.

"Shep, I hear wolves!"

"Wolves!" and now the doctor's son leaped to his feet and glanced
toward his shotgun, which rested against the rocky wall. "Are you
certain?"

"Listen!"

Both boys bent their ears and for a full minute neither made a sound.
Then Shep shook his head.

"I can't hear anything now," he said.

"Well, I heard them before," answered Whopper, positively. "Must have
been a million of 'em, too!"