The sound they heard was the low, complaining snarl of the Wolf.
"The nerve of him!" exclaimed George.
"Perhaps he'll answer now!" Will suggested.
Then followed the "slap, slap, slap!" of the Beaver Patrol.
No answer came from the darkness beyond the shaft.
"He's got his nerve with him!" declared Will. "When I get hold of him, I'll teach him to answer Boy Scout challenges!"
When the boys got back to their quarters they found Tommy and Sandy sitting in the darkness with their automatics and their searchlights in their hands. One of them turned on a finger of light as the boys entered but immediately shut it off again.
"What's coming off here?" demanded Will.
"Do you know what those fellows did?" asked Tommy. "They came here while we were asleep and stole about half our provisions!"