"The best way is to prove it," that worthy told him immediately.
"It would at least be convincing," the pilot of the armored car declared.
"Suppose, then," continued the scout, "you leave your car here at the foot of this little rise. They couldn't see us with that hump between. Go up the hill, and look along the road. You needn't let them see you, of course; but I notice that you've got a pair of field-glasses along. Follow the road with those until you come to a little break in the stone wall that lies around a patch of field on the right. It is this knoll I spoke of, crowned with brush. Watch that brush closely for a minute; perhaps you will see the sun glint from the gun; or else one of the hidden German gunners may move ever so slightly. That will tell the story, captain."
The pilot of the armored car jumped out.
"I will do as you say, at least it can be no harm," he remarked hastily.
After speaking in Flemish to his companions, he started up the rise, carrying the field-glasses and a revolver along with him. Watching, they saw him get down and crawl the last yard or so; and then evidently he found a way to level his glasses in the quarter under suspicion.
Five minutes later and he backed off, coming quickly down the little declivity. The first thing he did was to grip Rob's hand and squeeze it fiercely.
"I have to thank you for my life, and the lives of my brave comrades as well!" he said with fervor.
"Then you found that what I told you was exactly so?" Rob asked.