The idea was no sooner fully conceived, than I noticed a wavy, unsteady motion in the figure of the Aztec Princess, and almost immediately afterwards, I perceived that she was gradually rising from the broken pavement upon which she had been standing, and passing slowly upwards through the branches of the overshadowing trees. What was most remarkable, the relative distance between us did not seem to increase, and my amazement was inconceivable, when on casting my eyes toward my feet, I perceived that I was elevated more than twenty yards from the pavement where I had slept. My ascent had been so gradual, that I was entirely unaware of moving, and now that I became sensible of it, the motion itself was still imperceptible. Upward, still upward, I was carried, until the tallest limbs of the loftiest trees had been left far below me. Still the ascent continued. A wide and beautiful panorama now opened before me. Above, all was flashing moonlight and starry radiance. The beams of the full moon grew more brilliant as we cleared the vapory atmosphere contiguous to the earth, until they shone with half the splendor of morn, and glanced upon the features of my companion with a mellow sheen, that heightened a thousandfold her supermundane beauty. Below, the gray old relics of a once populous capital glimmered spectrally in the distance, looking like tombs, shrouded by a weeping forest; whilst one by one, the mourners lost their individuality, and ere long presented but a dark mass of living green. After having risen several hundred feet perpendicularly, I was enabled to form an estimate of the extent of the forest, in the bosom of which sleep and moulder the monuments of the aboriginal Americans. There is no such forest existing elsewhere on the surface of this great globe. It has no parallel in nature. The Black Forest of Germany, the Thuringian Forest of Saxony, the Cross Timbers of Texas, the dense and inaccessible woods cloaking the headwaters of the Amazon and the La Plata, are mere parks in comparison. For miles and miles, leagues and leagues, it stretched out--north, south, east and west. It covers an area larger than the island of Great Britain; and throughout this immense extent of country there is but one mountain chain, and but one river. The summits of this range have been but seldom seen by white men, and have never been scaled. The river drains the whole territory, but loses itself in a terrific marsh before its tide reaches the Mexican gulf, toward which it runs. The current is exceedingly rapid; and, after passing for hundreds of miles under the land and under the sea, it unites its submarine torrent near the west end of Cuba, with that of the Orinoco and the Amazon, and thus forms that great oceanic river called the Gulf Stream. Professor Maury was right in his philosophic conjecture as to the origin of that mighty and resistless tide.