"Treed in a hole,—ha, ha,—that's clever!" interrupted one of the officers. The others laughed in unison, and the boys joined.

"Well, that's what we call it, at any rate," continued Alfred. "So we went over to help him out. Right near the hole was a big flat stone on top of a mound, and it had the cross marks on it, some circles, and arrows, and also some marks."

"Where is that?" asked an officer, now thoroughly sobered.

"But what made you think it had anything to do with that hill over there?" interrupted another.

"Because the arrow pointed that way, but when we made a test we were disappointed, as the arrow went straight to that hollow place that I referred to, north of the hill. Now, there may be something in that; I don't know," said Alfred.

"That is something worth looking into; accompany us," said the officer.

On the way to the narrow cut which led to the roadway, the commanding officer of the battery appeared.

"What is this I hear about finding a range mark left by the Germans?" he asked.

The matter was explained to him.

"It looks to me like a bench mark," said Alfred, as they walked down the hill.