"It's a bell," said Earl. "I told you that before."
"It's very strange," muttered Dubois. "I cannot understand it."
The men were all alert now, however, and on the watch for any trick that the Germans might try to play on them. Every one was mystified and at a complete loss to understand the strange occurrence. A half-hour passed and the performance was not repeated.
"Where can Armande be I wonder," said Earl.
"It certainly seems as if he ought to be back by this time, doesn't it?" exclaimed Leon anxiously.
"He's dead," said Dubois shortly.
"What makes you think so?" asked Earl.
"Well he hasn't come back yet, has he?"
"No."
"Then he must be dead and I believe that bell ringing had something to do with it too."