"This one shows the whole of the sole," said Donald.
"And this one only part," added Rand.
"This one is pressed in deeper on one side than the other," put in
Jack.
"You are getting the idea," said the colonel. "Think you would know them again?"
"I think I would," responded Jack.
"Then follow them."
Starting off, the boys followed the trail, each one alert to notice any little peculiarity in the foot-prints that would enable them to recognize it again. The trail was readily followed along the road until it turned off into the woods, when they lost it.
"Keep on," directed the colonel, "perhaps you can pick it up again."
Scattering through the woods the boys diligently sought for the foot-prints, but were unable to discover them.
"We have lost them," announced Rand, after they had searched for some time. "Can you help us to find it?"