A horseman rode slowly out of a draw and up a steep, lava-covered ridge, singing "The Cowboy's Lament," to the disgust of his horse, which suddenly arched its back and stopped the song in the twenty-ninth verse."Dearly Beloved," grinned the rider, after he had quelled the trouble, "yore protest is heeded. 'Th' Lament' ceases, instanter; an' while you crop some of that grass, I'll look around and observe th' scenery, which shore is scrambled. Now,...