"What's your objection to looking the place over?" asked Ned.

"Rats!" was Harry's brief but expressive explanation.

"Rats?" queried Ned. "What do you mean? Are there rats here?"

"There certainly are, and lots of them," was the positive answer. "When I dropped into this place I think I dropped onto one, and must have crushed him before he had time to squeal. I heard others running."

"We really ought to make a light," returned Ned. "We can't tell what the place is like without some way of seeing it."

"There's a light!" was Jack's sudden exclamation. "See it over there to the right. Why," he added, "there are two lights!"

"And I see others!" cried Harry. "I believe it's the eyes of the rats. Perhaps they were frightened away and are coming back."

"Have you any matches?" asked Ned. "I haven't a one with me. It's careless, I know, but not a match can I find in my pockets."

"Where's your searchlight?" inquired Jack. "Haven't you that?"

"No; the Germans took that away from me when they searched us."