Now it is only in the imagination of the word-smith that the villain in the play is gifted with supernatural powers of discernment. Ruiz Gregorio Maria y Alvarez Mattacheco, familiarly and less cumbrously known as "Mexican George," was a mere murderer, with a quick eye for gun-sights and a ready and itching trigger finger. But he was no Vidoeq, to know by instinct which of the two trails, the canyon passage or the longer route over the hills, Ford had chosen. Having two guesses he made the wrong one first, urging his mustang toward the canyon trail. A stumbling half-mile up the narrow cleft of the river's path revealing nothing, he began to reconsider. Drawing a second blank of the same dimensions, he turned back to the ford and tried the hill trail. At the end of the first hundred yards on the new scent he came again upon the fresh hoof-prints, and took off the brow-cramping hat to swear the easier. Two courses were now open to him; to press hard upon the roundabout hill trail in the hope of overtaking the engineer before he could reach the Horse Creek camp, or to pass by the shorter route to the upper ford to head him off at the river crossing. The Mexican gave another glance at the dull red spot in the western sky and played for safety. The waylaying alternative commended itself on several counts. The canyon trail was the shorter and it could be traversed leisurely and in daylight. Pressing his livery hack as he could, Ford would scarcely reach the crossing at the mouth of Horse Creek before dusk. Moreover, it would be easier to wait and to smoke than to chase the quarry over the hills, wearing one's pinto to the bone. Ruiz Gregorio Maria set his horse once more at the task of picking a path among the canyon boulders, riding loosely in the saddle, first in one stirrup and then in the other, and smoking an unbroken succession of the corn-husk cigarettes. One small cloud flecked the sky of satisfaction. His instructions had been explicit. If Ford should resign, quit, wash his hands of the Pacific Southwestern, he might be suffered to escape. If not--there was only one condition attached to the alternative: what was done must be done neatly, with despatch, and at a sufficient distance from any of the MacMorrogh camps to avert even the shadow of suspicion. Now the upper crossing of waylayings was within a stone's throw of the end-of-track yards; nay, within an amateur's pistol-shot of the commissary buildings. But Ruiz Gregorio, weighing all the possibilities, found them elastic enough to serve the purpose. A well-calculated shot from behind a sheltering boulder, the heaving of the body into the swift torrent of the Pannikin, and the thing was done. What damning evidence might afterward come to the light of day, if, indeed, it should ever come to light, would be fished out of the stream far enough from any of the MacMorrogh camps.