"Like this, for instance," remarked Jack Armitage, flourishing a husky specimen that would pass muster for an Irishman's shillalah.

"Or this!" cried Red, whose cudgel was as long as a walking stick, and almost as thick through as his wrist.

"Suit yourselves about that, boys," continued the scout master, "only don't be in a hurry to use them as weapons until you have the order. Now, each detachment must keep close enough together so that the members may communicate by means of patrol calls—the cry of the wolf, the slap of a beaver's tail as he beats the water to call his mate, or the scream of the eagle."

"We know, Elmer; what else?" asked Matty.

"All the while you will keep on the lookout for some sign of the enemy. The scout who discovers anything that he thinks would have a bearing on the solving of the puzzle must immediately summon his leader. This he can do by the whistle which all of you know, as it has been used before."

"Is that all, Elmer?" asked Mark.

"If the matter seems very important to the mind of the leader, let him give the assembly call very loud on his whistle. Upon hearing that, every scout is expected to give up hunting on his own account, and head in toward the place the signal comes from. Is that plain to every fellow?"

A chorus of assent answered him.

"That's all, then, fellows," Elmer went on. "Do your duty, every scout. We've got to find our comrade, and we've got to get him out of the hands of these men, whoever they may turn out to be."

"If they've hurt our Nat, it's going to be a bad day for them, that's all," blustered Red, as he pounded his club against an inoffensive stone.