The public edifices of the Pearl of Andalusia were no doubt worthy of its fame as a home of wisdom and culture. In addition to the mosque built by Abdelasis, near or on the spot where the convent of La Trinidad now stands, a notable ornament of the city was the mosque raised on the site of the basilica of St Vincent--immortalised by several memorable Councils. “But who,” asks Señor de Madrazo, “would be capable to-day of describing this edifice? Nothing of it remains except the memory of the place where it stood. Other structures, ampler and more majestic, replaced it when, under the Almoravides and Almohades, Seville recovered its rank as an independent kingdom. Let us content ourselves with recording that the principal mosque, built at the same time as and on the model of that of Cordova, although on a smaller and less sumptuous scale, was situated on the site of the existing Cathedral, and that in the ninth century it was burnt by the Normans. In consequence it is impossible to say if the great horseshoe arches which occur in the cloister of the Cathedral are works earlier or later than that event. It does not appear probable that in the time of the Khalifs the mosque of Seville could have had the considerable dimensions suggested by the northern boundary of the _patio de los naranjos_. That line is 330 Castilian feet, which would give the mosque, extending from north to south, a length about double, the breadth of the atrium included--unlikely dimensions for a temple which, compared with the Jama of Cordova, was unquestionably of the second class. No one knows who ordered the construction of the primitive mosque of Seville.” The irruption of the Normans, one of the results of which was the demolition of this edifice, took place in 859. The pirates were afterwards defeated off the coast of Murcia by the Moorish squadron, and made sail for Catalonia. A serious descent had taken place in 844. Lisbon was the first city to fall a victim to the Northmen, whom we next hear of at Cadiz and at Sidonia, where they defeated the Khalifa’s troops in a pitched battle. Fierce fighting took place before the walls of Ishbiliyah, the invaders being uniformly victorious. Laden with the richest booty, they at length retired overland to Lisbon, where they took to their ships. They not only destroyed the mosque of Seville, but threw down the city walls, which dated from Roman times. These were repaired by Abd-er-Rahman II., to be partially demolished again by Abd-er-Rahman III. on his triumphal entry into the amirate of Ibrahim Ibn Hajjaj.