"Why not to-day, Hank?" demanded Frank, briskly.

The veteran grinned, as though he had half anticipated having such a question asked.

"So, that's the way the wind blows, hey?" he remarked, slowly; and then he nodded his small head approvingly. "Jest as you say, Frank, thar's no time like the present t' do things. The hull pack hes been here, I see, an' no matter how cunning old Sallie allers shows herself, a chain's only as strong as th' weakest link. One of her cubs will sure leave tracks we kin foller. All right, boys count on me t' back ye up. I'll go wharever ye say, Frank."

"We'll follow the trail, if there is one," said Frank, instantly; "but the chances are that's where we'll bring up," and he pointed with his quirt in the direction of the rocky uplift that stood like a landmark in the midst of the great level sea of purple sage brush, marking the plain.

After one good look the cowman nodded his head again in the affirmative.

"Reckon as how y'r' right, Frank," he remarked; "but we'll see how the trail heads."

Throwing himself from his saddle he bent down over the remains of the yearling that had been so unfortunate as to become lame, and thus, lagging far behind the rest of the herd, fallen a victim to the wolf pack.

"Easy as fallin' off a log," announced old Hank, immediately. "Jest as I was sayin', thar's nearly allers one clumsy cub as don't hev half sense; an' I kin foller this trail on horseback, 'pears to me."

He ran it out a little way; then, once more mounting, went on ahead, with his keen eyes fastened on the ground.

Bob watched his actions with the greatest of interest. He knew Old Hank was discovering a dozen signs that would be utterly invisible to one who had not had many years of practice in tracking both wild animals and human beings.