“I hardly think so while that fellow is here,” Clem said. “We’ll see if I’m not right pretty soon. We’ll have to risk it, anyway.” “Go ahead; I’ve risked more than that more than once.” “What is your name?” “Duncan. I’m from Maine. What’s yours?” “Stapley. Marines. I’m from Pennsylvania. Go easy now; we’re getting up near the place and they’ll likely be watching out for somebody. Let’s wait until it’s a little darker, then sneak up. I have a hunch those chaps are on this side signaling information to their friends over east.” The darkness grew thicker and gave way to night. The watchers had found shelter, both against possible German shells or discovery, behind a boulder where they crouched for several minutes. No shells came that way, though the booming of cannon not very far away to the east and northeast showed that the Huns were awake and replying to the constant cannonading of the French and Americans. All around the boys it was as quiet as any night in early summer. Once, overhead, they heard the call of a night bird and once the twitter of some small feathered citizen disturbed in its slumbers in a thicket. There was the squeak of a mouse or shrew beneath the turf almost at their feet. In a whisper that could not have been heard twenty feet away Clem told his companion what he suspected, from his recollection of the doubtful ambulance driver’s face and from Don Richards’ brief account of the signaling near Montdidier. After what Clem had seen here and the injury to the army ambulance, there was enough to satisfy Duncan that they had Hun spies to deal with. “I’m going to get up and take a look round,” he said. “Going to be an old dead tree; it’s a trick we Indians pull off to fool moose. You see I’ve got a little Indian blood in me. Fact. Proud of it.” And with that Duncan crawled up on the boulder and slowly stood up, his arms extended crookedly, one held higher than the other. Thus he remained for several minutes. Then he came down, even more slowly. “Say, pard, you’ve got the dope. They’re up there all right, about two hundred yards, and they’re signaling. There’s a light going up and down, bull’s eye, turned away, but I could see the reflection on a rock.” “Well, we’re here to stop that and get those fellows,” said Clem. “Shall we rush them?” “No, no! We’d only give them a fine chance to bore us full of holes. They don’t want to be surprised, you can bet. But we can stalk them, as we do bear on high ground, and work the bird call so as to make them think nobody’s around in our direction. Are you on?” “I am! Say, I guess you are Indian all right. You lead off--and I’ll follow and do just as you do, as near as I can.” “Only be careful where you put your hands and knees. Don’t crack any sticks nor roll any stones. Ready?”