His thoughts went back to the subject which so frequently occupied them--his lifelong, vengeful quest of the man who had despoiled his father, wrought destruction upon their home, and changed the current of his own life. His heart waxed hot as he recalled his interview with Rutherford Jenkins. Never for an instant had he doubted that Jenkins's statement was a deliberate lie. Smiling grimly, he stroked the mare's mane. "I was a fool, wasn't I, Betty, to suppose I'd get straight goods out of him. It cost me five hundred dollars to find out that he's a skunk,--which I knew before. I deserved all I got, didn't I, Betty, for not having more gumption." The frontiersman's caution, which grows almost instinctive in one who rides much alone over plain and mountain, sent his eyes now and again to search the long stretch of road that trailed its faint gray band across the hills behind and before him and to scan the sun-flooded reach from horizon to horizon. A red stain accentuated the meeting line of sky and plain in the west. "Betty Brown, do you see that red mark yonder?" he said, gently pulling her ear. "That means a sand-storm, and we've got to hike along at a pretty stiff pace while we can. What do you think about it, my lady?" The mare raised her head and gave a little snort. "Smell it, don't you?" he went on as he patted her approvingly. "Well, that's where you're smarter than I am, for I reckon I shan't be able to do that for another hour." He fell silent again, thinking of the Delafield matter and Jenkins's assertion that Bancroft was Delafield. "He sure knows who Delafield is," was his conclusion, announced aloud, "but he's not going to tell. He's probably blackmailing the man, whoever he is, and he won't take any chances that would be likely to spoil his income. Well, that proves that Delafield is somebody in New Mexico rich enough and prominent enough to make it worth while for Jenkins to keep his knowledge to himself. I've got that much for my five hundred, anyway. Lord, Betty, wasn't I a tenderfoot!" and he swore under his breath, half angrily, half amusedly, as he turned again to study the road and the plain. The heat haze was rising, and the clear white sunlight was master of earth and sky. Far to one side he noted the silvery lake of a mirage. But the red line had mounted higher, and become a low, dirty-red wall that seemed to fence the western expanse from north to south. "It sure looks like a bad one, Betty, and I'm afraid we shan't be able to get home to-night after all. But we'll make Adobe Springs anyway, if it doesn't catch us too soon."