At length, having traversed passages and apartments with which the captain seemed familiar, and which he threaded with a stealthy, silent, and apparently reverential pace, as if, in his own inflated phrase, afraid to awaken the sounding echoes of those lofty and monumental halls, another species of inhabitants began to be visible. In different entrances, and in different apartments, the northern soldier beheld those unfortunate slaves, chiefly of African descent, raised occasionally under the Emperors of Greece to great power and honours, who, in that respect, imitated one of the most barbarous points of Oriental despotism. These slaves were differently occupied; some standing, as if on guard, at gates or in passages, with their drawn sabres in their hands; some were sitting in the Oriental fashion, on carpets, reposing themselves, or playing at various games, all of a character profoundly silent. Not a word passed between the guide of Hereward, and the withered and deformed beings whom they thus encountered. The exchange of a glance with the principal soldier seemed all that was necessary to ensure both an uninterrupted passage. After making their way through several apartments, empty or thus occupied, they, at length entered one of black marble, or some other dark-coloured stone, much loftier and longer than the rest. Side passages opened into it, so far as the islander could discern, descending from several portals in the wall; but as the oils and gums with which the lamps in these passages were fed diffused a dim vapour around, it was difficult to ascertain, from the imperfect light, either the shape of the hall, or the style of its architecture. At the upper and lower ends of the chamber, there was a stronger and clearer light. It was when they were in the middle of this huge and long apartment, that Achilles said to the soldier, in the sort of cautionary whisper which he appeared to have substituted in place of his natural voice since he had crossed the Bridge of Peril-- "Remain here till I return, and stir from this hall on no account." "To hear is to obey," answered the Varangian, an expression of obedience, which, like many other phrases and fashions, the empire, which still affected the name of Roman, had borrowed from the barbarians of the East. Achilles Tatius then hastened up the steps which led to one of the side-doors of the hall, which being slightly pressed, its noiseless hinge gave way and admitted him.