A MAN in a maroon-colored flannel shirt, which had been purchased for purposes of decoration and made, principally, by some Jewish women on the east side of New York, rounded a corner and walked into the middle of the main street of Yellow Sky. In either hand the man held a long, heavy, blue-black revolver. Often he yelled, and these cries rang through a semblance of a deserted village, shrilly flying over the roofs in a volume that seemed to have no relation to the ordinary vocal strength of a man. It was as if the surrounding stillness formed the arch of a tomb over him. These cries of ferocious challenge rang against walls of silence. And his boots had red tops with gilded imprints, of the kind beloved in winter by little sledding boys on the hillsides of New England.