He reflected on the peculiarities and position of the wall before him. Although the widest and most important of the rents which he had observed in it, existed too near the rampart to be reached without the assistance of a ladder, there were others as low as the ground, which he knew, by the result of the trial he had already made, might be successfully and immensely widened by the most ordinary exertion and perseverance. The interior of the wall, if judged by the condition of the surface, could offer no insuperable obstacles to an attempt at penetration so partial as to be limited to a height and width of a few feet. The ramparts, from their position between two guard-houses, would be unencumbered by an inquisitive populace. The sentinel, within the limits of whose allotted watch it happened to fall, would, when night came on, be the only human being likely to pass the spot; and at such an hour his attention must necessarily be fixed--in the circumstances under which the city was now placed--on the prospect beyond, rather than on the ground below and behind him. It seemed, therefore, almost a matter of certainty, that a cautious man, labouring under cover of the night, might pursue whatever investigations he pleased at the base of the wall.
He examined the ground where he now stood. Nothing could be more lonely than its present appearance. The private gardens on the hill above it shut out all communication from that quarter. It could only be approached by the foot-path that ran round the Pincian Mount, and along the base of the walls. In the state of affairs now existing in the city, it was not probable that any one would seek this solitary place, whence nothing could be seen, and where little could be heard, in preference to mixing with the spirit-stirring confusion in the streets, or observing the Gothic encampment from such positions on the ramparts as were easily attainable to all. In addition to the secresy offered by the loneliness of this patch of ground to whatever employments were undertaken on it, was the further advantage afforded by the trees and thickets which covered its lower end, and which would effectually screen an intruder, during the darkness of night, from the most penetrating observation directed from the wall above.
Reflecting thus, he doubted not that a cunning and determined man might with impunity so far widen any one of the inferior breaches in the lower part of the wall as to make a cavity (large enough to admit a human figure) that should pierce to its outer surface, and afford that liberty of departing from the city and penetrating the Gothic camp which the closed gates now denied to all the inhabitants alike. To discover the practicability of such an attempt as this was, to a mind filled with such aspirations as the Pagan's, to determine irrevocably on its immediate execution. He resolved as soon as night approached to begin his labours on the wall; to seek--if the breach were made good, and the darkness favoured him--the tent of Alaric; and once arrived there, to acquaint the Gothic King with the weakness of the materials for defence within the city, and dilapidated condition of the fortifications below the Pincian Mount, insisting, as the condition of his treachery, on an assurance from the barbarian leader (which he doubted not would be gladly and instantly accorded) of the destruction of the Christian churches, the pillage of the Christian possessions, and the massacre of the Christian priests.
He retired cautiously from the lonely place that had now become the centre of his new hopes; and entering the streets of the city, proceeded to provide himself with an instrument that would facilitate his approaching labours, and food that would give him strength to prosecute his intended efforts, unthreatened by the hindrance of fatigue. As he thought on the daring treachery of his project, his morning's exultation began to return to him again. All his previous attempts to organise the restoration of Paganism sunk into sudden insignificance before his present design. His defence of the Temple of Serapis, his conspiracy at Alexandria, his intrigue with Vetranio, were the efforts of a man; but this projected destruction of the priests, the churches, and the treasures of a whole city, through the agency of a mighty army, moved by the unaided machinations of a single individual, would be the dazzling achievement of a god!
The hours loitered slowly onward. The sun waned in the gorgeous heaven, and set, surrounded by red and murky clouds. Then came silence and darkness. The Gothic watch-fires flamed one by one into the dusky air. The guards were doubled at the different posts. The populace were driven from the ramparts, and the fortifications of the great city echoed to no sound now but the tramp of the restless sentinel, or the clash of arms from the distant guard-houses that dotted the long line of the lofty walls.
It was then that Ulpius, passing cautiously along the least-frequented streets, gained unnoticed the place of his destination. A thick vapour lay over the lonely and marshy spot. Nothing was now visible from it but the dim, uncertain outline of the palaces above, and the mass, so sunk in obscurity that it looked like a dark layer of mist itself, of the rifted fortifications. A smile of exultation passed over the Pagan's countenance, as he perceived the shrouding and welcome thickness of the atmosphere. Groping his way softly through the thickets, he arrived at the base of the wall. For some time he passed slowly along it, feeling the width of the different rents wherever he could stretch his hand. At length he paused at one more extensive than the rest, drew from its concealment in his garments a thick bar of iron sharpened at one end, and began to labour at the breach.
Chance had led him to the place best adapted to his purpose. The ground he stood on was only encumbered close to the wall by rank weeds and low thickets, and was principally composed of damp, soft turf. The bricks, therefore, as he carefully detached them, made no greater noise in falling than the slight rustling caused by their sudden contact with the boughs through which they descended. Insignificant as this sound was, it aroused the apprehension of the wary Pagan. He laid down his iron bar, and removed the thickets by dragging them up, or breaking them at the roots, until he had cleared a space of some feet in extent before the base of the wall. He then returned to his toilsome task, and with hands bleeding from the wounds inflicted by the thorns he had grasped in removing the thickets continued his labour at the brick-work. He pursued his employment with perfect impunity; the darkness covered him from observation; no one disturbed him by approaching the solitary scene of his operations; and of the two sentinels who were placed near the part of the wall which was the centre of all his exertions, one remained motionless at the most distant extremity of his post, and the other paced restlessly backwards and forwards on the rampart, singing a wild, rambling son about war, and women, and wine, which, whatever liberty it might allow to his organs of perception, effectually hindered the vigilant exercise of his faculties of hearing.
Brick after brick yielded to the vigorous and well-timed efforts of Ulpius. He had already made a cavity, in an oblique direction, large enough to creep through, and was preparing to penetrate still further, when a portion of the rotten material of the interior of the wall suddenly yielded in a mass to a chance pressure of his iron bar, and slowly sunk down inwards into a bed which, judging by such faint sounds as were audible at the moment, must have been partly water, and partly marshy earth and rotten brick-work. After having first listened, to be sure that the slight noise caused by this event had not reached the ears or excited the suspicions of the careless sentinels, Ulpius crept into the cavity he had made, groping his way with his bar, until he reached the brink of a chasm, the depth of which he could not probe, and the breadth of which he could not ascertain.