'I must pass from this darkness into light--I must breathe the air of the sky, or I shall perish in the damps of this vault,' he exclaimed in a hoarse, moaning voice, as he raised himself gradually and painfully into a creeping position; and turning round slowly, commenced his meditated retreat. His brain still whirled with the emotions that had so lately overwhelmed his mind; his right hand hung helplessly by his side, dragged after him like a prisoner's chain, and lacerated by the uneven surface of the ground over which it was slowly drawn, as--supporting himself on his left arm, and creeping forward a few inches at a time--he set forth on his toilsome journey. Here, he paused bewildered in the darkness; there, he either checked himself by a convulsive effort from falling headlong into the unknown deeps beneath him, or lost the little ground he had gained in labour and agony, by retracing his way at the bidding of some unexpected obstacle. Now he gnashed his teeth in anguish, now he cursed in despair, now he was breathless with exhaustion; but still, with an obstinacy that had in it something of the heroic, he never failed in his fierce resolution to effect his escape. Slowly and painfully, moving with the pace and the perseverance of the tortoise, hopeless yet determined as a navigator in a strange sea, he writhed onward and onward upon his unguided course, until he reaped at length the reward of his long suffering, by the sudden discovery of a thin ray of moonlight toiling through a crevice in the murky brickwork before him. Hardly did the hearts of the Magi when the vision of 'the star in the East' first dawned on their eyes, leap within them with a more vivid transport, than that which animated the heart of Ulpius at the moment when he beheld the inspiring and guiding light. Yet a little more exertion, a little more patience, a little more anguish; and he stood once again, a ghastly and crippled figure, before the outer cavity in the wall. It was near daybreak; the moon shone faintly in the dull, grey heaven; a small, vaporous rain was sinking from the shapeless clouds; the waning night showed bleak and cheerless to the earth, but cast no mournful or reproving influence over the Pagan's mind. He looked round on his solitary lurking place, and beheld no human figure in its lonely recesses. He looked up at the ramparts, and saw that the sentinels stood silent and apart, wrapped in their heavy watch-cloaks, and supported on their trusty weapons. It was perfectly apparent that the events of his night of suffering and despair had passed unheeded by the outer world. He glanced back with a shudder upon his wounded and helpless limb; then his eyes fixed themselves upon the wall. After surveying it with an earnest and defiant gaze, he slowly moved the brushwood with his foot, against the small cavity in its outer surface.