The denizens of the Atlas were the first to experience the power of the newly-organized empire. The courage of these mountaineers and the natural defences of their country had enabled them to repulse the cavalry of Musa, and that skilful general had been compelled to tolerate the presumption of a race which the experience of military commanders had for centuries pronounced invincible. But the mountain tribes were unable to sustain their well-merited reputation in the face of the followers of Abdallah. They were driven from the plains. Their haunts were invaded, and fastnesses heretofore considered inaccessible were penetrated by the swarming legions of the Desert. Their flocks were swept away. Their families were borne into slavery. Finally, broken in spirit, they acknowledged the divine mission of the reformer; repeated with superstitious and unmeaning reverence the formula of the Mussulman creed; accepted with meek submission the political superiority of the Lamtounah; and contributed a considerable reinforcement to the already formidable army of the conqueror. Abdallah did not long enjoy the substantial fruits of his victories. He was killed in a skirmish twenty-two years after the commencement of his public career as a missionary, and the government and destiny of the Berber nation devolved on Abu-Bekr-Ibn-Omar, Emir of the Lamtounah, whose appointment had been dictated by the authority of Abdallah himself. Abu-Bekr, while not aspiring to the divine character assumed by his predecessor, was none the less fortunate in prosecuting his designs of conquest. He invaded and subdued the ancient kingdom of the Edrisites, and incorporated it into his vast dominions. He occupied, in turn, the capitals of Fez and Mequinez, and, dissatisfied with their surroundings, or craving distinction in a new field, he began the construction of the city of Morocco as a residence for the dynasty he had founded. Summoned unexpectedly to the borders of the Desert to suppress a rebellion, he left the administration of the empire in the hands of his cousin, Yusuf-Ibn-Tashfin. This chieftain, destined to enduring celebrity as the deliverer and conqueror of Spain, had already passed the term of middle life. His person was agreeable, his manners fascinating, his reputation for valor and capacity unsurpassed. He constantly practised, without effort or ostentation, the abstemious habits of his nomadic ancestry. The devout and the indigent received with grateful acknowledgments the frequent tokens of his charity and benevolence. In the high station which his birth and talents had secured for him he had always acted as a wise and discriminating ruler. His character was, however, obscured by many degrading vices, and, under the mask of a political ascetic, he concealed the sinister designs of a calculating and unscrupulous ambition. The opportunity for personal advancement now offered him was eminently congenial with the