"Up an' dig, boy! Ther trick is did!"
In a moment Frank dashed after the old man.
The Blackfeet recovered quickly, and they leaped in pursuit, uttering fierce cries.
Old Rocks was surprised by Frank's fleetness on foot.
"Derned ef you can't run, ez well ez do other things!" he muttered, as the lad forged along by his side. "You're a holy wonder, boy. It's twice you saved my life this day. I trusted everything ter you this last time, an' yer didn't fail me."
"I broke the Indian's arm as he was on the point of striking."
"Thet wuz ther only mistake yer made. You oughter broke his head, an' thar'd bin one less. They're arter us hot foot, an it's a race fer life now."