"Maybe that is the reason."
"Surely there can be no danger for a German airship around here."
"I don't know about that. We have traveled a considerable distance.
Perhaps we are closer to the border than we think."
"Well, we can't get across it any too soon to suit me," declared Chester.
Hal did not reply, and the flight was continued in silence. For more than an hour the huge machine sailed swiftly through the air. At length Hal said:
"I guess we had better drop down a bit. Perhaps we may be able to see something."
Suiting the action to the word, he let the machine glide slowly downward, until the distant shadow of the earth could once more be seen. Then the craft sped out on its straightaway course again.
The twinkling of faraway lights drew the boys' attention.
"I wonder what that is?" asked Chester.
"We'll see," was the brief reply.