In the midst of a vast marbled hall stood an elegantly-wrought fountain, connected with the fine aqueduct of the city. A draught of air rushed through this hall, and in stormy weather switched the water all over the floor, now robbed of its mosaics, and covered, wherever the foot could tread, with a thin, dark green, damp and slippery coating of mossy plants and slime. It was here that Keraunus leaned breathless against the wall, and, wiping his brow, panted rather than said: "At last, this is the end!" The words sounded as if he meant his own end and not that of their excursion through the palace, and it seemed like a mockery of the man himself when Pontius unhesitatingly replied with decision: "Good, then we can begin our re-examination here, at once." Keraunus did not contradict him, but, as he remembered the number of stairs to be climbed over again, he looked as if sentence of death had been passed upon him. "Is it necessary that I should remain with you during the rest of your labors, which must be principally directed to details?" asked the prefect of the architect. "No," answered Pontius, "provided you will take the trouble to look at once at my plan, so as to inform yourself on the whole of what I propose, and to give me full powers to dispose of men and means in each case as it arises." "That is granted," said Titianus. "I know that Pontius will not demand a man or a sesterce more or less than is needed for the purpose." The architect bowed in silence and Titianus went on. "But above all things, do you think you can accomplish your task in eight days and nine nights?" "Possibly, at a pinch; and if I could only have four days more at my disposal, most probably." "Then all that is needed is to delay Hadrian's arrival by four days and nights." "Send some interesting people--say the astronomer Ptolemaeus, and Favorinus, the sophist, who await him here--to meet him at Pelusium. They will find some way of detaining him there." "Not a bad idea! We will see. But who can reckon on the Empress's moods? At any rate, consider that you have only eight days to dispose of." "Good." "Where do you hope to be able to lodge Hadrian?" "Well, a very small portion of the old building is, strictly speaking, fit to use." "Of that, I regret to say, I have fully convinced myself," said the prefect emphatically, and turning to the steward, he went on in a tone less of stern reproof than of regret. "It seems to me, Keraunus, that it would have been your duty to inform me earlier of the ruinous condition of the building." "I have already lodged a complaint," replied the man, "but I was told in answer to my report that there were no means to apply to the purpose." "I know nothing of these things," cried Titianus. "When did you forward your petition to the prefect's office?" "Under your predecessor, Haterius Nepos." "Indeed," said the prefect with a drawl.