“If you want my advice we’d better beat it right now while the beating’s good,” Bob declared after they had made a complete circuit of the cave and were once more in the outer room.
“You said it. Come on.”
Quickly they gathered up their belongings and, a moment later, started off down the mountain as fast as they could go.
CHAPTER VII
A WARNING.
The two boys arrived back at the camp shortly before five o’clock. During the return trip they had not seen a single person, even the keeper of the dam being away when they got there.
“I don’t know about you, Bob, but believe me, I’m tired,” Jack declared as he threw himself on his bed almost as soon as they had entered their cabin.
“I don’t feel exactly rested myself,” Bob smiled as he followed suit.
For half an hour neither spoke again then a knock sounded on the door and Mr. Sleeper came in.
“Well did you find the top of the mountain still there?” he asked.
“We didn’t get to the top,” Jack grinned.