Frank's spirits rose as they rode on past rough bazaar and well built house, and the disappointment he had felt at the sudden check to their plans of obtaining permission to proceed to Khartoum died quite away. For he learned in this change of position that the city had not half been searched, and as his eyes wandered here and there it was with the feeling that at any minute he might come upon the face he so eagerly sought, while in spite of a feeling of shrinking repugnance to his companion he began to realise how valuable a kind of friendship between them might prove, especially if their intercourse meant a freedom in traversing the city unencumbered by their guards. It became more and more evident as they rode on, and his manifest pleasure and excited interest in all he saw about the place was noted, that the young Emir was perfectly satisfied, and grasping how he examined the better homes, paused from time to time for him to notice the houses and gardens they passed, and the servants and slaves of their occupants. "It is just out of friendliness," thought Frank, "a return for my nursing when he was in a dying state. Everyone has some form of gratitude in him. Would it be possible to find poor Hal, and then appeal to the Emir and his son to let us buy the prisoner and take him away?" Frank's heart sank again directly, for he felt that it was improbable in the extreme. They were nothing better than prisoners themselves, and the most to be expected would be that his brother's slavery might be ameliorated by a change of masters. "Better that than how he is," thought the young man at last, "for the Emir undoubtedly respects us, and that last experiment must have raised us all wonderfully in his eyes." He was thinking of this as he passed one of the best houses he had seen--a place where, in a rough courtyard, armed men were grouped with their camels and horses. There was a great covered well in the centre, with dejected-looking men busy drawing water, and through the open windows of the low terraced house he had glimpses of the turbaned, white-robed occupants. The place interested Frank for reasons he could not have explained, and he would gladly have sat watching what was going on; but it was evidently the dwelling of some powerful dervish Emir, and his companion rode up to one of the armed men seated upon a slightly built, swift-looking camel. Their colloquy was very brief, and the young Emir turned to him, said something, and pressing his horse's sides galloped onwards towards a wide opening, the steed Frank rode keeping close to its fellow's side.