"Five cows," said Loudon. "Nothin' mean about that jigger."

He bent down to examine the tracks more closely, and as he stooped a rifle cracked faintly, and a bullet whisped over his bowed back.

Loudon jammed home both spurs, and jumped Lemons forward. Plying his quirt, he looked over his shoulder.

A puff of smoke suddenly appeared above a rock a quarter of a mile downstream and on the other side of the creek. The bullet tucked into the ground close beside the pony's drumming hoofs.

Loudon jerked his Winchester from its scabbard under his leg, turned in the saddle, and fired five shots as rapidly as he could work the lever. He did not expect to score a hit, but earnestly hoped to shake the hidden marksman's aim. He succeeded but lamely.

The enemy's third shot cut through his shirt under the left armpit, missing the flesh by a hair's-breadth. Loudon raced over the lip of a swell just as a fourth shot ripped through his hat.

Hot and angry, Loudon jerked Lemons to a halt half-way down the reverse slope. Leaving his horse tied to the ground he ran back and lay down below the crest. He removed his hat and wriggled forward to the top.

Cautiously lifting his head he surveyed the position of his unknown opponent. A half-mile distant, on the Bar S side of the Pack-saddle, was the rock which sheltered the marksman. A small dark dot appeared above it.

Taking a long aim Loudon fired at the dot. As he jerked down the lever to reload, a gray smoke-puff mushroomed out at the lower right-hand corner of the rock, and a violent shock at the elbow numbed his right hand.

Loudon rolled swiftly backward, sat up, and stared wonderingly at his two hands. One held his Winchester, but gripped in the cramped fingers of the right hand was the bent and broken lever of the rifle. The bullet of the sharp-shooting citizen had struck the lever squarely on the upper end, snapped the pin, torn loose the lever, and hopelessly damaged the loading mechanism.