Mustapha therefore spent the night in Orbasan's tent. With the early dawn they rode off, accompanied by three of Orbasan's bravest men well mounted and armed. They rode very fast and in two days' time reached the place where Mustapha had left Fatima. They took her with them, and journeyed on until they came to the small wood from whence Thiuli's castle could be seen, where they went into camp until night should come. As soon as it was dark, guided by Fatima, they stole up to the brook where the aqueduct began, and soon discovered the entrance. There they left Fatima and a servant with the horses, and prepared to descend into the conduit; but before they went in, Fatima repeated once more her instructions to them--they would emerge from the fountain into the inner court, in the right and left corners of which were towers, and in the sixth door counting from the right tower, they would find Fatima and Zoraide, guarded by two black slaves. Well provided with weapons and crowbars, Mustapha, Orbasan, and two other men, descended into the aqueduct. They sank to their hips in the water, but none the less did they advance valiantly forward. In half an hour they came to the fountain, and at once began to use their crowbars. The wall was thick and solid but could not long withstand the united strength of the four men, and they had soon made an opening large enough to crawl through. Orbasan passed through first, and helped the others after him. When they all stood in the court, they looked closely at the side of the castle facing them, to pick out the door that had been described. But they did not all agree on this point, for on counting from the right tower toward the left, they found one door that had been walled up, and they could not decide whether Fatima had passed this door by, or had counted it in with the others. But Orbasan did not hesitate long. "My good sword will open every door to me," exclaimed he, and went to one of the doors followed by his companions. They opened the door and discovered six black slaves lying on the floor asleep. They were about to withdraw quietly, as they saw they had missed the right door, when a man's form arose in the corner, and in a well-known voice, called for help. It was Hassan, the deserter from Orbasan's camp. But before the black guards could find out what had happened, Orbasan rushed at the little wretch, tore his girdle into two pieces, with one of which he bound his mouth, and with the other tied his hands behind his back; then he turned on the slaves, some of whom were already partially secured by Mustapha and his companions, and assisted to completely overpower them. At the point of the dagger, the slaves confessed that Nurmahal and Mirza were in the adjoining room. Mustapha rushed in, and found Fatima and Zoraide, who were already aroused by the noise. They quickly collected their clothing and ornaments, and followed Mustapha. The two robbers now begged permission of Orbasan to