Notwithstanding these signal triumphs, the reign of Abderahman was disturbed by further insurrections, and by another descent from Africa, but he was victorious over them all; striking the roots of his power deeper and deeper into the land. Under his sway, the government of Spain became more regular and consolidated, and acquired an independence of the empire of the East. The caliph continued to be considered as first pontiff and chief of the religion, but he ceased to have any temporal power over Spain. Having again an interval of peace, Abderahman devoted himself to the education of his children. Suleiman, the eldest, he appointed Wali or governor of Toledo; Abdallah, the second, was intrusted with the command of Merida; but the third son, Hixem, was the delight of his heart, the son of Howara, his favorite sultana, whom he loved throughout life with the utmost tenderness. With this youth, who was full of promise, he relaxed from the fatigues of government; joining in his youthful sports amid the delightful gardens of Cordova, and teaching him the gentle art of falconry, of which the king was so fond that he received the name of the Falcon of Coraixi. While Abderahman was thus indulging in the gentle propensities of his nature, mischief was secretly at work. Muhamad, the youngest son of Yusuf, had been for many years a prisoner in the tower of Cordova. Being passive and resigned, his keepers relaxed their vigilance, and brought him forth from his dungeon. He went groping about, however, in broad daylight, as if still in the darkness of his tower. His guards watched him narrowly, lest this should be a deception, but were at length convinced that the long absence of light had rendered him blind. They now permitted him to descend frequently to the lower chambers of the tower, and to sleep there occasionally, during the heats of summer. They even allowed him to grope his way to the cistern, in quest of water for his ablutions. A year passed in this way without anything to excite suspicion. During all this time, however, the blindness of Muhamad was entirely a deception; and he was concerting a plan of escape, through the aid of some friends of his father, who found means to visit him occasionally. One sultry evening in midsummer, the guards had gone to bathe in the Guadalquivir, leaving Muhamad alone, in the lower chambers of the tower. No sooner were they out of sight and hearing than he hastened to a window of the staircase, leading down to the cistern, lowered himself as far as his arms would reach, and dropped without injury to the ground. Plunging into the Guadalquivir, he swam across to a thick grove on the opposite side, where his friends were waiting to receive him. Here, mounting a horse which they had provided for an event of the kind, he fled across the country, by solitary roads, and made good his escape to the mountains of Jaen.