Ere long, he heard a thin, winding, long-drawn sound, now louder, now softer; now approaching, now retreating; now verging towards shrillness, now quickly returning to a faint, gentle swell. Suddenly this strange unearthly music was interrupted by a succession of long, deep, rolling sounds, which travelled grandly about the fissures above, like prisoned thunderbolts striving to escape. Utterly ignorant that the first of these noises was occasioned by the night wind winding through the rents in the brick of the outer wall beyond him; and the second, by the echoes produced in the irregular cavities above, by the footfall of the sentries overhead--roused by the influence of the place, and the mystery of his employment, to a pitch of fanatic exaltation, which for the moment absolutely unsteadied his reason--filled with the frantic enthusiasm of his designs, and the fearful legends of invisible beings and worlds which made the foundation of his worship, Ulpius conceived, as he listened to the sounds around and above, that the gods of antiquity were now in viewless congregation hovering about him, and calling to him in unearthly voices and in an unknown tongue, to proceed upon his daring enterprise, in the full assurance of its near and glorious success. 'Roar and mutter, and make your hurricane music in my ears!' exclaimed the Pagan, raising his withered hands, and addressing in a savage ecstacy his imagined deities. 'Your servant Ulpius stops not on the journey that leads him to your repeopled shrines! Blood, crime, danger, pain--pride and honour, joy and rest, have I strewn like sacrifices at your altars' feet! Time has whirled past me; youth and manhood have lain long since buried in the hidden Lethe which is the portion of life; age has wreathed his coils over my body's strength, but still I watch by your temples and serve your mighty cause! Your vengeance is near! Monarchs of the world, your triumph is at hand!' He remained for some time in the same position, looking fixedly up into the trackless darkness above him, drinking in the sounds which--alternately rising and sinking--still floated round him. The trembling gleam of his lantern fell red and wild upon his livid countenance. His shaggy hair floated in the cold breezes that blew by him. At this moment he would have appeared from a distance, like a phantom of fire perishing in a mist of darkness; like a Gnome in adoration in the bowels of the earth; like a forsaken spirit in a solitary purgatory, watching for the advent of a glimpse of beauty, or a breath of air. At length he aroused himself from his trance, trimmed with careful hand his guiding lantern, and set forward to penetrate the breadth of the great rift he had just entered.