Occasionally the monotony of this vast wilderness is interrupted by mountainous belts of sand and limestone, broken into confused masses; with precipitous cliffs and yawning ravines, looking like the ruins of a world; or is traversed by lofty and barren ridges of rock, almost impassable, like those denominated the Black Hills.  Beyond these rise the stern barriers of the Rocky Mountains, the limits, as it were, of the Atlantic world.  The rugged defiles and deep valleys of this vast chain form sheltering places for restless and ferocious bands of savages, many of them the remnants of tribes, once inhabitants of the prairies, but broken up by war and violence, and who carry into their mountain haunts the fierce passions and reckless habits of desperadoes.

Such is the nature of this immense wilderness of the far West; which apparently defies cultivation, and the habitation of civilized life.  Some portions of it along the rivers may partially be subdued by agriculture, others may form vast pastoral tracts, like those of the East; but it is to be feared that a great part of it will form a lawless interval between the abodes of civilized man, like the wastes of the ocean or the deserts of Arabia; and, like them, be subject to the depredations of the marauder.  Here may spring up new and mongrel races, like new formations in geology, the amalgamation of the “debris” and “abrasions” of former races, civilized and savage; the remains of broken and almost extinguished tribes; the descendants of wandering hunters and trappers; of fugitives from the Spanish and American frontiers; of adventurers and desperadoes of every class and country, yearly ejected from the bosom of society into the wilderness.  We are contributing incessantly to swell this singular and heterogeneous cloud of wild population that is to hang about our frontier, by the transfer of whole tribes from the east of the Mississippi to the great wastes of the far West.  Many of these bear with them the smart of real or fancied injuries; many consider themselves expatriated beings, wrongfully exiled from their hereditary homes, and the sepulchres of their fathers, and cherish a deep and abiding animosity against the race that has dispossessed them.  Some may gradually become pastoral hordes, like those rude and migratory people, half shepherd, half warrior, who, with their flocks and herds, roam the plains of upper Asia; but others, it is to be apprehended, will become predatory bands, mounted on the fleet steeds of the prairies, with the open plains for their marauding grounds, and the mountains for their retreats and lurking-places.  Here they may resemble those great hordes of the North, “Gog and Magog with their bands,” that haunted the gloomy imaginations of the prophets.  “A great company and a mighty host, all riding upon horses, and warring upon those nations which were at rest, and dwelt peaceably, and had gotten cattle and goods.”