And he threw the revolver into the mud at Barry's feet, turned on his heel, and lumbered off into the rain. There was no voice of answer behind him, except a shrill whine of rage from Black Bart and then a sharp command: "Down!" from the master. As the blanket of rain shut over him, Mac Strann looked back. There stood the strange man with the wolf crouched at his feet, and the teeth of Bart were bared, and the hum of his horrible snarling carried to Strann through the beat of the rain. Mac Strann turned again, and plodded slowly through the storm. And Dan Barry? Twice men had stood before him, armed, and twice he had failed to kill. Wonder rose in him; wonder and a great fear. Was he losing the desert, and was the desert losing him? Were the chains of humanity falling about him to drag him down to a tamed and sordid life? A sudden hatred for all men, Mac Strann, Daniels, Kate, and even poor Joe Cumberland, welled hot in the breast of Whistling Dan. The strength of men could not conquer him; but how could their very weakness disarm him? He leaped again on the back of Satan, and rode furiously back into the storm. CHAPTER XLI THE FALLING OF NIGHT It had been hard to gauge the falling of night on this day, and even the careful eyes of the watchers on the Cumberland Ranch could not tell when the greyness of the sky was being darkened by the coming of the evening. All day there had been swift alterations of light and shadow, comparatively speaking, as the clouds grew thin or thick before the wind. But at length, indubitably, the night was there. Little by little the sky was overcast, and even the lines of the falling rain were no longer visible. Before the gloom of the darkness had fully settled over the earth, moreover, there came a change in the wind, and the watchers at the rain-beaten windows of the ranch-house saw the clouds roll apart and split into fragments that were driven from the face of the sky; and from the clean washed face of heaven the stars shone down bright and serene. And still Dan Barry had not come. After the tumult of that long day the sudden silence of that windless night had more ill omen in it than thunder and lightning. For there is something watching and waiting in silence. In the living room the three did not speak.