Other barely visible abrasions showed that the horse had entered the water. Why had someone elected to cross at this point? Pack-saddle Creek was fordable in many places. Below the mud-hole four feet and less was the depth. But opposite the rock ledge was a scour-hole fully ten feet deep shallowing to eight in the middle of the stream. Here was no crossing for an honest man in his senses. But for one of questionable purpose, anxious to conceal his trail as much as possible, no better could be chosen.
"Good thing his hoss slipped," said Loudon, and returned to the waiting Lemons.
Mounting his horse he forded the creek and rode slowly along the bank. Opposite the lower end of the ledge he found that which he sought. In the narrow belt of bare ground between the water's edge and the grass were the tracks of several cows and one pony. Straight up from the water the trail led, and vanished abruptly when it reached the grass.
"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.