“Looking for the flash of the smoke of a gun, perhaps,” came the reply. “Some of these old prowlers are as wise as they make ’em. The boys declare they can dodge a bullet, if they happen to be looking back when you fire. Remember that, Bob, and be ready to shoot at the drop of the hat after I’ve let loose. Perhaps we can catch him napping that way.”

Bob was aware that he had much to learn about shooting while on the full gallop. Still, he would like to make a try. If he failed, then rather than see the wolf escape, he meant to be the one to take first shot, and let Frank try to nip the gray robber of the herds before he could recover.

Already had they decreased by one-half and more the lead with which the fleeing animal had started. Things were getting serious with the wolf now. His observations became more frequent. Evidently he expected that at any moment

firing might begin; and he wanted to be ready to dodge.

“How about it now, Frank?” asked the Kentucky boy, as he held his rifle in readiness for instant use.

“We might give him a try,” came the reply; and as he spoke Frank threw his gun up to his shoulder, allowing the bridle to fall upon the neck of Buckskin.

The sharp report of the weapon sounded; but apparently there was no result. Quickly, after the first shot, came a second. Bob had pulled trigger, too; but the fleeing wolf did not show the least sign of having been struck.

“I missed him clean, Frank!” cried Bob, in dismay. “Hardly thought I’d be smart enough to hit such a flying target while going at this pace. But Frank, you were right; I plainly saw him dodge when you shot!”

“Well, let’s give him another round then, and see if you can do better, Bob.”

“I’m ready; let him have it,” yelled Bob, eagerly, his sporting instinct now fully aroused.