A man on a tired gray horse reined in where a dim cattle-trail dropped into a gulch, and looked behind him. Nothing was in sight. He half closed his eyes and searched the horizon. No, there was nothing - just the same old sand and sage-brush, hills, more sand and sage-brush, and then to the west and north the spur of the Rockies, whose jagged peaks were white with a fresh fall of snow. The wind was chill. He shivered, and looked to the eastward. For the last few hours he had felt snow in the air, and now he could see it in the dim, gray mist - still far off, but creeping toward him.