There was no want of guns. Besides those of the Catalina, there were in the island twelve pieces, comprising four twenty-four pounders and two ten-inch mortars; in the town were six field-pieces, with four cohorns on the east front; an eighteen-pounder was on the Gusmans, a howitzer on the portcullis tower, and two field-pieces were in reserve for sallies: yet most of the island ordnance was mounted after the investment, and the walls and towers of the town were too weak and narrow to sustain heavy guns; hence only three field-pieces and the cohorns did in fact reply to the enemy’s fire. The garrison, including six hundred Spanish infantry and one hundred horse of that nation, amounted to two thousand five hundred men, of whom seven hundred were in the island, one hundred in the Catalina, two hundred in the convent, and fifteen hundred in the town. On the 19th of December, General Laval, having eight thousand men, drove in the advanced posts, but was with a sharp skirmish designedly led towards the eastern front. The 20th the place was invested, and the 21st some French troops having incautiously approached the western front, Captain Wren of the 11th, suddenly descended from the Catalina and carried them off. In the night the enemy approached close to the walls of that front, but in the morning Wren again fell on them; and at the same time a sally of discovery was made from the convent so vigorously that Lieutenant Welstead of the 82nd, entering one of the enemy’s camps captured a field-piece; he was unable to bring it off in face of the French reserves, yet the latter were drawn by the skirmish under the fire of the ships, of the island, and of the town, whereby they suffered severely and with difficulty recovered the captured piece. In the night of the 22nd the anticipations of the British engineer were realized. The enemy broke ground five hundred yards from the eastern front, and worked assiduously until the 26th, under a destructive fire, replying principally with wall-pieces, which would have done much mischief if the garrison had not been copiously supplied with sand-bags.