In the early sixties a trail led from the broad Missouri, swirling yellow and turgid between its green-groved borders, for miles and miles out upon the grassy Nebraska plains, turning westward over the undulating prairie, with its swales and billows and long, winding lines of cottonwoods, to a slow, vast heave of rising ground—Wyoming—where the herds of buffalo grazed and the wolf was lord and the camp-fire of the trapper sent up its curling blue smoke from beside some lonely stream on and on over the barren lands of eternal monotony, all so gray and wide and solemn and silent under the endless sky on, ever on, up to the bleak, black hills and into the waterless gullies and through the rocky gorges where the deer browsed and the savage lurked then slowly rising to the pass between the great bold peaks, and across the windy uplands into Utah,.