But a more marvelous phenomenon quickly made its appearance, causing them to gasp with astonishment. As they drew near the dismantled dome a brilliant gleam suddenly streamed into the ports on the side turned toward the monument--a gush of light so bright that the air inside the bell seemed to have been illuminated with a golden sunrise. They glanced toward the monument, and saw that it was surmounted by some vibrating object which seemed instinct with blinding fire. The colors that sprang from it changed rapidly from gold to purple, and then, through shimmering hues of bronze, to a deep rich orange. It looked like a sun, poised on the horizon. The spectacle was so dazzling, so unexpected, so beautiful, and, associated with the architectural memorial of one of the greatest characters in American history, so strangely suggestive, that even King Richard and the two Frenchmen were strongly moved, while Cosmo and his fellow-countrymen grasped each other by the hand, and the former said, in solemn tones: "My friends, to my mind, this scene, however accidental, has something of prophecy about it. It changes the current of my thought--America is not dead; in some way she yet survives upon the earth." Long they gazed and wondered, but at last, partly recovering from their astonishment, at the suggestion of De Beauxchamps, they drew nearer the monument. But when they had arrived within a few yards of it, the blinding light disappeared as if snuffed out, and they saw nothing but the broken gray walls of the dome. The moving object, which had been dimly visible at the beginning, and had evidently been the source of the light, had vanished. "The creature that produced the illumination," said Professor Abel Able, "has been alarmed by our approach, and has withdrawn into the interior." This was, no doubt, the true explanation, but they could perceive no signs of life about the place, and they finally turned away from it with strange sensations. Avoiding the neighborhood of the cathedral, they steered the bell down the former course of the Hudson, but afterward ventured once more over the drowned city until they arrived at the site of the great station of the Pennsylvania Railroad, which they found completely unroofed. They sank the bell into the vast space where the tunnels entered from underneath the old river bed, and again they had a startling experience. Something huge, elongated, and spotted, and provided with expanding claw-like limbs, slowly withdrew as their light streamed upon the reddish ooze covering the great floor. The nondescript retreated backward into the mouth of a tunnel. They endeavored, cautiously, to follow it, turning a magnifying window in its direction, and obtaining a startling view of glaring eyes, but the creature hastened its retreat, and the last glimpse they had was of a grotesque head, which threw out piercing rays of green fire as it passed deeper into the tunnel.