CHAPTER IV.
PRISONERS.
Harding was all excitement and eagerness. It did not seem as if he could get ready quick enough.
The air-ship rested upon the earth now, and Frank and Harding stepped over the rail.
As soon as the two explorers had gone, Barney and Pomp were to send the air-ship up a hundred feet or more and there safely anchor it.
A system of signals by means of rifle-shots had been agreed upon.
Thus having concluded all arrangements, the two explorers set out upon their trip.
Harding led the way.
They carried sacks in which the treasure was to be brought from the cavern to the air-ship.
Leaving the Kite they entered a dense clump of tropical growth, and a short while later came out into a narrow defile leading up through the hills.
This was deep and dangerous-looking.