At daybreak Louisbourg rang with shouts of triumph. It was plain that a disorderly militia could not capture the Island Battery. Yet captured or silenced it must be; and orders were given to plant a battery against it at Lighthouse Point, on the eastern side of the 123 harbor’s mouth, at the distance of a short half-mile. The neighboring shore was rocky and almost inaccessible. Cannon and mortars were carried in boats to the nearest landing-place, hauled up a steep cliff, and dragged a mile and a quarter to the chosen spot, where they were planted under the orders of Colonel Gridley, who thirty years after directed the earthworks on Bunker Hill. The new battery soon opened fire with deadly effect. The French, much encouraged by their late success, were plunged again into despondency by a disaster which had happened a week before the affair of the Island Battery, but did not come to their knowledge till some time after. On the nineteenth of May a fierce cannonade was heard from the harbor, and a large French ship-of-war was seen hotly engaged with several vessels of the squadron. She was the “Vigilant,” carrying 64 guns and 560 men, and commanded by the Marquis de la Maisonfort. She had come from France with munitions and stores, when on approaching Louisbourg she met one of the English cruisers,--some say the “Mermaid,” of 40 guns, and others the “Shirley,” of 20. Being no match for her, the British or provincial frigate kept up a running fight and led her towards the English fleet. The “Vigilant” soon found herself beset by several other vessels, and after a gallant resistance and the loss of eighty men, struck her colors. Nothing could be more timely for the New England army, whose ammunition and provisions had 124 sunk perilously low. The French prize now supplied their needs, and drew from the _Habitant de Louisbourg_ the mournful comment, “We were victims devoted to appease the wrath of Heaven, which turned our own arms into weapons for our enemies.” Nor was this the last time when the defenders of Louisbourg supplied the instruments of their own destruction; for ten cannon were presently unearthed at low tide from the flats near the careening wharf in the northeast arm of the harbor, where they had been hidden by the French some time before. Most of them proved sound; and being mounted at Lighthouse Point, they were turned against their late owners at the Island Battery.