After bringing up the heavy ordnance and stores from the fleet, the besieging army broke ground; and, by the first of October, had pushed their sap within three hundred yards of the abattis on the left of the British lines. Several batteries were opened on the besieged which played almost incessantly upon their works, but made no impression on them. The situation of D'Estaing was becoming critical. More time had already been consumed on the coast of Georgia than he had supposed would be necessary for the destruction of the British force in that state. He became uneasy for the possessions of France in the West Indies, and apprehensive for the safety of the ships under his command. The naval officers remonstrated strenuously against longer exposing his fleet on an insecure coast, at a tempestuous season of the year, and urged the danger of being overtaken by a British squadron, when broken and scattered by a storm, with a degree of persevering earnestness which the Count found himself incapable of resisting. In a few days the lines of the besiegers might have been carried by regular approaches, into the works of the besieged, which would have rendered the capture of the town and garrison inevitable. But D'Estaing declared that he could devote no more time to this object; and it only remained to raise the siege, or to attempt the works by storm. The latter part of the alternative was adopted. On the left of the allied army, was a swampy hollow way which afforded a cover for troops advancing on the right flank of the besieged, to a point within fifty yards of their principal work. It was determined to march to the main attack along this hollow; and, at the same time, to direct feints against other parts of the lines. [Sidenote: Unsuccessful attempt to storm it.] On the morning of the 9th of October, before day, a heavy cannonade and bombardment were commenced from all the batteries, as preliminary to the assault. About three thousand five hundred French, and one thousand Americans, of whom between six and seven hundred were regulars, and the residue militia of Charleston, advanced in three columns, led by D'Estaing and Lincoln, aided by the principal officers of both nations, and made a furious assault on the British lines. Their reception was warmer than had been expected. The fire from the batteries of the besieged reached every part of the columns of the assailants which had emerged from the swamp, and did great execution. Yet the allied troops advanced with unabated ardour, passed through the abattis, crossed the ditch, and mounted the parapet. Both the French and Americans planted their standards on the walls, and were killed in great numbers, while endeavouring to force their way into the works. For about fifty minutes, the contest was extremely obstinate. At length, the columns of the assailants began to relax, and a pause was manifested in the assault.