Made a comrade and ally of these bordermen, Dick Gale had leaped at the desert action and strife with an intensity of heart and a rare physical ability which accounted for the remarkable fact that he had not yet fallen by the way. On this December afternoon the three rangers, as often, were separated. Lash was far to the westward of Sonoyta, somewhere along Camino del Diablo, that terrible Devil's Road, where many desert wayfarers had perished. Ladd had long been overdue in a prearranged meeting with Gale. The fact that Ladd had not shown up miles west of the Papago Well was significant. The sun had hidden behind clouds all the latter part of that day, an unusual occurrence for that region even in winter. And now, as the light waned suddenly, telling of the hidden sunset, a cold dry, penetrating wind sprang up and blew in Gale's face. Not at first, but by imperceptible degrees it chilled him. He untied his coat from the back of the saddle and put it on. A few cold drops of rain touched his cheek. He halted upon the edge of a low escarpment. Below him the narrowing valley showed bare, black ribs of rock, long, winding gray lines leading down to a central floor where mesquite and cactus dotted the barren landscape. Moving objects, diminutive in size, gray and white in color, arrested Gale's roving sight. They bobbed away for a while, then stopped. They were antelope, and they had seen his horse. When he rode on they started once more, keeping to the lowest level. These wary animals were often desert watchdogs for the ranger, they would betray the proximity of horse or man. With them trotting forward, he made better time for some miles across the valley. When he lost them, caution once more slowed his advance. The valley sloped up and narrowed, to head into an arroyo where grass began to show gray between the clumps of mesquite. Shadows formed ahead in the hollows, along the walls of the arroyo, under the trees, and they seemed to creep, to rise, to float into a veil cast by the background of bold mountains, at last to claim the skyline. Night was not close at hand, but it was there in the east, lifting upward, drooping downward, encroaching upon the west. Gale dismounted to lead his horse, to go forward more slowly. He had ridden sixty miles since morning, and he was tired, and a not entirely healed wound in his hip made one leg drag a little. A mile up the arroyo, near its head, lay the Papago Well. The need of water for his horse entailed a risk that otherwise he could have avoided. The well was on Mexican soil. Gale distinguished a faint light flickering through the thin, sharp foliage. Campers were at the well, and, whoever they were, no doubt they had prevented Ladd from meeting Gale. Ladd had gone back to the next waterhole, or maybe he was hiding in an arroyo to the eastward, awaiting developments.