CHAPTER VII. Inexorably, with a fatality no power could arrest, like a projectile speeding from the mouth of a cannon toward the target, the comet continued to advance, following its appointed path, and hurrying, with an ever-increasing velocity, toward the point in space at which the earth would be found on the night of July 14–15. The final calculations were absolutely without error. These two heavenly bodies—the earth and the comet—were to meet like two trains, rushing headlong upon each other, with resistless momentum, as if impelled to mutual destruction by an insatiable rage. But in the present instance the velocity of shock would be 865 times that of two express trains having each a speed of one hundred kilometers per hour. During the night of July 13–14, the comet spread over nearly the entire sky, and whirlwinds of fire could be seen by the naked eye, eddying about an axis oblique to the zenith. The appearance was that of an army of flaming meteors, in whose midst the flashing lightning produced the effect of a furious combat. The burning star had a revolution of its own, and seemed to be convulsed with pain, like a living thing. Immense jets of flame issued from various centers, some of a greenish hue, others red as blood, while the most brilliant were of a dazzling whiteness. It was evident that the sun was acting powerfully upon this whirlpool of gases, decomposing certain of them, forming detonating compounds, electrifying the nearer portions, and repelling the smoke from about the immense nucleus which was bearing down upon the world. The comet itself emitted a light far different from the sunlight reflected by the enveloping vapors; and its flames, shooting forth in ever-increasing volume, gave it the appearance of a monster, precipitating itself upon the earth to devour it. Perhaps the most striking feature of this spectacle was the absence of all sound. At Paris, as elsewhere, during that eventful night, the crowd instinctively maintained silence, spellbound by an indescribable fascination, endeavoring to catch some echo of the celestial thunder—but not a sound was heard. The moon rose full, showing green upon the fiery background of the sky, but without brilliancy and casting no shadows. The night was no more night, for the stars had disappeared, and the sky glowed with an intense light.