The central magician was insatiable and pitiless; he demanded not only the waters, but whatever they could bring; he hungered after the earth and all that covered it. His obedient Afreets toiled on, denuding the plateaux of their soil, washing it away from every slope and peak, pouring it year by year into the cañons, and whirling it on to the ocean. The rivers, the brooklets, the springs, and the rains all joined in this eternal robbery. Little by little an eighth of a continent was stripped of its loam, its forests, its grasses, its flowers, its vegetation of every species. What had been a land of fertility became an arid and rocky desert.

Then the minor Afreets perished of the results of their own obedience. There being no soil, the fountains disappeared; there being no evaporation, the rains diminished. Deprived of sustenance, nearly all the shorter streams dried up, and the channels which they had hewn became arid gullies. Only those rivers continued to exist which drew their waters from the snowy slopes of the Rocky Mountains or from the spurs and ranges which intersect the plateaux. The ages may come when these also will cease to flow, and throughout all this portion of the continent the central magician will call for his Afreets in vain.

For some time we must attend much to the scenery of the desert thus created. It has become one of the individuals of our story, and interferes with the fate of the merely human personages. Thurstane could not long ignore its magnificent, oppressive, and potent presence. Forgetting somewhat his anxieties about the loved one whom he had left behind, he looked about him with some such amazement as if he had been translated from earth into regions of supernature.

The cañon through which he was flying was a groove cut in solid sandstone, less than two hundred feet wide, with precipitous walls of fifteen hundred feet, from the summit of which the rock sloped away into buttes and peaks a thousand feet higher. On every side the horizon was half a mile above his head. He was in a chasm, twenty-five hundred feet below the average surface of the earth, the floor of which was a swift river.

He seemed to himself to be traversing the abodes of the Genii. Although he had only heard of "Vathek," he thought of the Hall of Eblis. It was such an abyss as no artist has ever hinted, excepting Doré in his picturings of Dante's "Inferno." Could Dante himself have looked into it, he would have peopled it with the most hopeless of his lost spirits. The shadow, the aridity, the barrenness, the solemnity, the pitilessness, the horrid cruelty of the scene, were more than might be received into the soul. It was something which could not be imagined, and which when seen could not be fully remembered. To gaze on it was like beholding the mysterious, wicked countenance of the father of all evil. It was a landscape which was a fiend.

The precipices were not bare and plain faces of rock, destitute of minor finish and of color. They had their horrible decorations; they showed the ingenuity and the artistic force of the Afreets who had fashioned them; they were wrought and tinted with a demoniac splendor suited to their magnitude. It seemed as if some goblin Michel Angelo had here done his carving and frescoing at the command of the lords of hell. Layers of brown, gray, and orange sandstone, alternated from base to summit; and these tints were laid on with a breadth of effect which was prodigious: a hundred feet in height and miles in length at a stroke of the brush.

The architectural and sculptural results were equally monstrous. There were lateral shelves twenty feet in width, and thousands of yards in length. There were towers, pilasters, and formless caryatides, a quarter of a mile in height. Great bulks projected, capped by gigantic mitres or diadems, and flanked by cavernous indentations. In consequence of the varying solidity of the stone, the river had wrought the precipices into a series of innumerable monuments, more or less enormous, commemorative of combats. There had been interminable strife here between the demons of earth and the demons of water, and each side had set up its trophies. It was the Vatican and the Catacombs of the Genii; it was the museum and the mausoleum of the forces of nature.

At various points tributary gorges, the graves of fluvial gods who had perished long ago, opened into the main cañon. In passing these the voyagers had momentary glimpses of sublimities and horrors which seemed like the handiwork of that "anarch old," who wrought before the shaping of the universe. One of these sarcophagi was a narrow cleft, not more than eighty feet broad, cut from surface to base of a bed of sandstone one-third of a mile in depth. It was inhabited by an eternal gloom which was like the shadow of the blackness of darkness. The stillness, the absence of all life whether animal or vegetable, the dungeon-like closeness of the monstrous walls, were beyond language.

Another gorge was a ruin. The rock here being of various degrees of density, the waters had essayed a thousand channels. All the softer veins had been scooped out and washed away, leaving the harder blocks and masses piled in a colossal grotesque confusion. Along the sloping sides of the gap stood bowlders, pillars, needles, and strange shapes of stone, peering over each other's heads into the gulf below. It was as if an army of misshapen monsters and giants had been petrified with horror, while staring at some inconceivable desolation and ruin. There was no hope for this concrete despair; no imaginable voice could utter for it a word of consolation; the gazer, like Dante amid the tormented, could only "look and pass on."

At one point two lateral cañons opened side by side upon the San Juan. The partition was a stupendous pile of rock fifteen hundred feet in altitude, but so narrow that it seemed to the voyagers below like the single standing wall of some ruined edifice. Although the space on its summit was broad enough for a cathedral, it did not appear to them that it would afford footing to a man, while the enclosing fissures looked narrow enough to be crossed at a bound. On either side of this isolated bar of sandstone a plumb-line might have been dropped straight to the level of the river. The two chasms were tombs of shadow, where nothing ever stirred but winds.