It having been resolved to destroy the enemy's works, a debarkation of upwards of 1000 men took place early on the morning of the 14th of September, while a sortie from the garrison was attempted against the battery which overawed the harbour. Captain Long, with his division of Seamen, Marines, and Swiss, proceeded to demolish the batteries on the right side of the bay, which he performed in a gallant stile. That Officer was shot through the shoulder very early in the action, but persevered in the attack, until his little advanced party, consisting of 26 Seamen and Marines, reached a spot where the enemy had a field piece, and were in considerable force. It was within 18 yards of their position that this brave young man received a mortal wound, when he was carried from the field. He lingered and died, and so strongly impressed was the foe with admiration of his valor, that a suspension of arms was maintained, while his remains were borne, with military honors, to the grave. Lieutenant Campbell, of Marines, after this mishap, instantly charged, drove the republicans to a narrow pass, where, being reinforced, he was held in check; but having accomplished the chief object which was intended, he effected a retreat to the garrison. Captains Johnstone and Richardson, who headed the division against the enemy's works on the left side of the harbour, did every thing that could have been expected from brave and experienced Officers. After having ruined the batteries of Punta Pina, the grottoes, and giovanni, a vast quantity of ammunition, and having carried off 150 barrels of powder, the British and Allied troops were attacked by very superior numbers in different quarters. Under existing circumstances a retreat was the only expedient, which, after a spirited contest, was made to the boats and within the walls of the fortress. Lieut. Clarke, of Marines, was wounded and made prisoner. The general loss was by no means equal to the nature of this service. Colonel Airey expressed himself highly indebted for the support and assistance given by the Seamen and Marines. Although the inadequacy of numbers prevented the completion of every object, still this diversion afforded a temporary aid to the brave defenders of Porto Ferrajo. Major Weir signalized himself in a subsequent sortie on the night of the 10th of October, and the garrison never relaxed in the most animated perseverance, until peace threw open its gates to a new sovereign. Captain Halsted, previous to the appearance of Sir John Warren, had captured or destroyed the whole of the French blockading squadron.