"Bide here for a spell, I expect," was Chester's answer.

"Guess you're right. They may not notice us down here. We'll play we're a couple of mice and see how still we can keep."

"Good! Listen! I hear 'em coming!"

Above them, to one side, they could hear the trampling of many feet as the Germans passed the pit.

"Guess we're safe enough so long as we stay down here," said Chester.

"But we're going to have trouble reaching the French lines if the Germans are permitted to camp out hereabouts," declared Hal.

"Well, maybe the French will chase them back again," said Chester, hopefully.

"Maybe," Hal repeated, "and then maybe not. Now, if we—hello!"

He broke off suddenly. From above there had come muttered exclamations of alarm, two bodies came hurtling through space and struck the bottom of the pit with loud thumps.

"Grab 'em, Hal!" shouted Chester, and leaped across the pit.