In the gloomy stagnation of the great house, it was natural that he should escape from it for a while, and the saddling of his horse for a solitary ride attracted no attention. But it might have been noticed that his manner had lost much of that nervous susceptibility and anxiety which indicates a lover; and it was with a return of his professional coolness and precision that he rode out of the patio as if on parade. Erect, observant, and self-possessed, he felt himself "on duty," and, putting spurs to his horse, cantered along the high-road, finding an inexpressible relief in motion. He was doing something in the interest of helplessness and of HER. He had no doubt of his right to interfere. He did not bother himself with the rights of others. Like all self-contained men, he had no plan of action, except what the occasion might suggest. He was more than two miles from La Mision Perdida, when his quick eye was attracted by a saddle-blanket lying in the roadside ditch. A recollection of the calamity of the previous night made him rein in his horse and examine it. It was without doubt the saddle-blanket of Dr. West's horse, lost when the saddle came off, after the Doctor's body had been dragged by the runaway beast. But a second fact forced itself equally upon the young officer. It was lying nearly a mile from the spot where the body had been picked up. This certainly did not agree with the accepted theory that the accident had taken place further on, and that the body had been dragged until the saddle came off where it was found. His professional knowledge of equitation and the technique of accoutrements exploded the idea that the saddle could have slipped here, the saddle-blanket fallen and the horse have run nearly a mile hampered by the saddle hanging under him. Consequently, the saddle, blanket, and unfortunate rider must have been precipitated together, and at the same moment, on or near this very spot. Captain Carroll was not a detective; he had no theory to establish, no motive to discover, only as an officer, he would have simply rejected any excuse offered on those terms by one of his troopers to account for a similar accident. He troubled himself with no further deduction. Without dismounting, he gave a closer attention to the marks of struggling hoofs near the edge of the ditch, which had not yet been obliterated by the daily travel. In doing so, his horse's hoof struck a small object partly hidden in the thick dust of the highway. It seemed to be a leather letter or memorandum case adapted for the breast pocket. Carroll instantly dismounted and picked it up. The name and address of Dr. West were legibly written on the inside. It contained a few papers and notes, but nothing more. The possibility that it might disclose the letters he was seeking was a hope quickly past. It was only a corroborative fact that the accident had taken place on the spot where he was standing.