"And get shot down," interrupted Dick. "No, I think the ghosts idea is as good as anything. Quick, take off your coats and tie your handkerchiefs over your faces."
The boys had on light-colored outing shirts, and these, with the handkerchiefs over their faces, made them look quite ghostlike in the gloom under the trees.
"Now, when the time comes groan," said Tom. "Ghosts always groan, you know."
"And let us order them back," added Sam.
"But be sure to do it in very ghostlike tones," warned Dick. "If our voices sound a bit natural they'll get suspicious at once. If they come for us, or shoot at us, drop behind the rocks and run into the woods."
It must be confessed that the boys were doubtful of the success of their ruse. Yet they felt they must do something to hold the treasure-seeking party in check, at least until morning. With the coming of daylight they could signal to the Rainbow and with the aid of those on the steam yacht probably rout the enemy.
The Rover boys advanced along the trail until they reached a spot they deemed favorable for their purpose. Then Dick gave his brothers a few more directions.
Presently they saw the rays of the gas lamp
