When he arrived at the U Bend he put in half an hour burying the human butts of The Orphan's joke, for the perpetrator liked to leave his trophies where they could be seen and appreciated. Shields looked sadly at the dead sheep, said "Hell" twice and forded the stream, picked up the outlaw's trail on the further side and cantered along it. The trail was very plain to him, straight as a chalk line, and it led toward the northeast, which suited the sheriff, because there was a goodly sized water hole twenty miles further on in that direction. Perhaps he would find The Orphan fortified there, for it would be just like that person to monopolize the only drinking water within twenty miles and force his humorous adversary to either take the hole or go back to the Limping Water for a drink. Anyway, The Orphan would get awfully soiled wallowing about in the mud and water, and he would not hurt the water much unless he lacked the decency to bleed on the bank. Having decided to take the hole in preference to riding back to the creek, the sheriff immediately dismissed that phase of the game from his mind and fell to musing about the rumors which had persistently reiterated that the Apaches were out. Practical joking with The Orphan and interfering with the traveling of Apache war parties were much the same in results, so the sheriff made up his mind to attend to the lesser matter, if need be, after he had quieted the man he was following. Everybody knew that Apaches were very bad, but that The Orphan was worse; and, besides, the latter would be laughing derisively about that matter concerning a drink. The sheriff grinned and rode happily forward, taking pains, however, to circle around all chaparrals and covers of every nature, for he did not know but that his playful enemy might have tired of riding before the water hole had been reached and decided to camp out under cover. While the sheriff was unafraid, he had befitting respect for the quality of The Orphan's marksmanship, which was reputed as being above reproach; and he was not expected to determine offhand whether the outlaw was above lying in ambush. So he used his field glass constantly in sweeping covers and rode forward toward the water hole. CHAPTER II CONCERNING AN ARROW The bleak foreground of gray soil, covered with drifts of alkali and sand, was studded with clumps of mesquite and cacti and occasional tufts of sun-burned grass, dusty and somber, while a few sagebrush blended their leaves to the predominating color. Back of this was a near horizon to the north and east, brought near by the skyline of a low, undulating range of sand hills rising from the desert to meet a faded sky. The morning glow brought this skyline into sharp definition as the dividing line between the darkness of the plain in the shadow of the range and the fast increasing morning light. To the south and west the plain blended into the sky, and there was no horizon.