“Silence!” said Dick. “Let us speak below our breath.”

“Has any thing happened?”

“Yes, let us waken Joe.”

The instant that Joe was aroused, Kennedy told him what he had seen.

“Those confounded monkeys again!” said Joe.

“Possibly, but we must be on our guard.”

“Joe and I,” said Kennedy, “will climb down the tree by the ladder.”

“And, in the meanwhile,” added the doctor, “I will take my measures so that we can ascend rapidly at a moment’s warning.”

“Agreed!”

“Let us go down, then!” said Joe.