The two days having expired, Boone announced this determination from one of the bastions, and thanked the British commander for the notice given of his intended attack, and the time allowed the garrison for preparing to defend the Station. This reply to his summons was entirely unexpected by Duquesne, and he heard it with evident disappointment. Other terms were immediately proposed by him, which "sounded so gratefully in the ears" of the garrison that Boone agreed to treat; and, with eight of his companions, left the fort for this purpose. It was soon manifest, however, by the conduct of the Indians, that a snare had been laid for them; and escaping from their wily foes by a sudden effort, they re-entered the palisades, closed the gates, and betook themselves to the bastions. A hot attack upon the fort now instantly commenced; but the fire of the Indians was returned from the garrison with such unexpected briskness and fatal precision that the besiegers were compelled to fall back. They then sheltered themselves behind the nearest trees and stumps, and continued the attack with more caution. Losing a number of men himself, and perceiving no falling off in the strength or the marksmanship of the garrison, Duquesne resorted to an expedient which promised greater success. The fort stood upon the bank of the river, about sixty yards from its margin; and the purpose of the commander of the Indians was to undermine this, and blow up the garrison. Duquesne was pushing the mine under the fort with energy when his operations were discovered by the besieged. The miners precipitated the earth which they excavated into the river; and Boone, perceiving that the water was muddy below the fort, while it was clear above, instantly divined the cause, and at once ordered a deep trench to be cut inside the fort, to counteract the work of the enemy. As the earth was dug up, it was thrown over the wall of the fort, in the face of the besieging commander. Duquesne was thus informed that his design had been discovered; and being convinced of the futility of any further attempts of that kind he discontinued his mining operations, and once more renewed the attack upon the Station in the manner of a regular Indian siege. His success, however, was no better than it had been before; the loss appeared to be all upon his side; his stock of provisions was nearly exhausted; having for nine days tried the bravery of his savage force, and tasked his own ingenuity to its utmost, he raised the siege, and abandoned the grand object of the expedition. During this siege, "the most formidable," says Mr. Marshall, "that had ever taken place in Kentucky from the number of Indians, the skill of the commanders, and the fierce countenances and savage dispositions of the warriors," only two men belonging to the Station were killed, and four others wounded.