My residence in this town, after visiting Olbera, was short and unpleasant. The yellow-fever, which had some months before appeared at Cadiz, began to show itself in our large suburb of Triana, on the other side of the Guadalquivir. As no measures were taken to prevent communication with Cadiz, it is supposed that the infection was brought by some of the numerous seafaring people that inhabit the vicinity of the river. The progress of the malady was slow at first, and confined to one side of the street where it began. Meetings of all the physicians were convened by the chief magistrates, who, though extremely arbitrary in matters of daily occurrence, are, in Spain, very timid and dilatory on any extraordinary emergency. Unconscious of the impending danger, the people flocked to these meetings to amuse themselves at the expense of our doctors, who are notoriously quarrelsome and abusive when pitted against each other. A few of the most enlightened among them ventured to declare that the fever was infectious; but their voice was drowned in the clamour of a large majority who wished to indulge the stupid confidence of the inhabitants. The disease in the mean time crossed the river; and following the direction of the street where it originally appeared at Triana--now quite overrun by the infection--began its ravages within the ancient walls of our town. It was already high time to take alarm, and symptoms of it were shewn by the chief authorities. Their measures, however, cannot fail to strike you as perfectly original. No separation of the infected from the healthy part of the town: no arrangement for confining and relieving the sick poor. The governor who, by such means, had succeeded in stopping the progress of the fever would have been called to account for the severity of his measures, and his success against the infection turned into a demonstration that it never existed. Anxious, therefore, to avoid every questionable step in circumstances of such magnitude, the civil authorities wisely resolved to make an application to the archbishop and chapter, for the solemn prayers called _Rogativas_, which are used in times of public affliction. This request being granted without delay, the _Rogativa_ was performed at the cathedral for nine consecutive days, after sunset. The gloom of that magnificent temple, scarcely broken by the light of six candles on the high altar, and the glimmering of the lamps in the aisles, combined with the deep and plaintive tones of forty singers chanting the penitential psalms, impressed the throng of supplicants with the strongest feelings, which superstition can graft upon fear and distress.