Dave kept his glass turned on the two men on the ground, at the same the trying to conceal the glass from their view.
"They haven't rifles," he told Lieutenant Bowers. Then, as the aircraft passed and left the adobe house to the rear, Darrin bent over and whispered something in Bowers's ear that the signalman behind them could not hear.
CHAPTER XXIII
THE DASH FOR THE TRAITOR
A Little later the hydro-aeroplane returned to Lieutenant Trent's position.
Dave placed in the hands of the lieutenant the field note-book, which had been so carefully kept that any officer could draw a map from it at need.
Lightly the big airship touched the earth just inside Trent's line. Dave, shaking hands with his temporary commanding officer, added:
"Thank you for something I've always wanted—-a flight over a real enemy's country."
"I've greatly enjoyed having you with me," Lieutenant Bowers responded.
"Trent, you've obliged me hugely by giving me so good an assistant.
Good-bye, fellows."
The birdman was again several hundred feet up in the air.