brought them to their feet in great excitement. Almost unable to
believe his ears, Will turned to George with a question on his lips:

"Did you hear that?" he asked.

"Of course I did!"

"I did, too, but I thought I must be dreaming."

"No dream about that!" replied George. "That's the call of the Beaver
Patrol!"

"And that means that Tommy and Sandy are not far away!"

"We heard the call of the Wolf Patrol not long ago," suggested George.
"I wonder if this blooming old mine is chock full of Boy Scouts of
assorted sizes. There can't be too many here to please me!"

The boys returned the Beaver call but no answer came. At times they
thought they heard whispers coming from the dark reaches of the
cavern, but they were not quite certain.

"There may be real Beavers in here for all we know!" suggested Will.

"That's all you know about it!" chuckled George. "Beavers only
operate in running water."

"Well, isn't that water out there running?" asked Will.

"No jokes now!" replied George. "I've got all I can endure now