There was no shelling of this spot that night, for there was not enough of the fort left to make a target, and the trenches were attracting all the fire.

The boys could proceed with their work with some degree of safety.

Reddy painfully located the rocky point by falling over a big stone in the dark, the boys having decided to go it blind until they actually had to use the lights.

“You haven’t broken a leg, have you, Reddy?” Henri anxiously inquired.

“No, I guess not,” was Reddy’s reply, “but I think I’ve kicked a toe loose, anyhow.”

The boys switched the masks off their lanterns and three slender bars of light danced among the stones.

“Don’t see any cross.”

“Be patient, Billy,” urged Henri, “we haven’t been here five minutes yet.”

For the next hour the boys circled around the place without finding a trace of the markings described in the map.

Billy and Henri sat down to rest, but Reddy, who seemed never to tire, continued to explore on his own account. He walked over to the ruins of the fort, and began to measure, by taking long steps, on a line some distance from the point where the boys had been searching for the cross.