The two schooners in the river were regarded by the Indians with mingled rage and superstition; not alone on account of the broadsides with which their camps were bombarded, but the knowledge that the vessels served to connect the isolated garrison with the rest of the world. They determined, therefore, to destroy them. The inventive genius of Pontiac caused a fire raft to be constructed by lashing together a number of canoes, piled high with a vast quantity of combustibles. A torch was applied in several places, and the thing of destruction was pushed off into the current. But fortune or Providence protected the schooners, the blazing raft passed within a hundred feet of them, and floating harmlessly down the stream, consumed nothing but itself. This attempt was several times repeated, but Gladwyn, on his part, provided boats and floating logs, which were moored by chains at some distance above the vessels, and foiled every attempt. In the meantime, unknown to the garrison, Captain Dalyell was on his way to Detroit with twenty-two barges, bearing two hundred and eighty men, with several small cannon, and a fresh supply of provisions and ammunition. Under cover of night and fog they reached the fort in safety, but not until they sustained an attack from the Indians which resulted in the loss of fifteen men. With this expedition was Major Rogers, commander of the famous Rogers's Rangers, and twenty of his men. {Illustration: Hollow Horn, Sioux (Upper Brule).} Captain Dalyell had a conference with Gladwyn, and requested permission to march out on the following night and attack the Indian camp. The commander, better acquainted with the position of affairs, opposed it; but Dalyell urged the matter so strongly, Gladwyn gave a reluctant consent. About two o'clock on the morning of July 31, the gates were silently opened, and two hundred and fifty men marched up the road along the river's shore. In the river, keeping abreast of the troops, two bateaux, each carrying a swivel gun, were rowed with muffled oars. As there was no moon shining, everything seemed favorable to strike a deadly blow at the camp of Pontiac. But though they knew it not, that vigilant and crafty chieftain was apprised of this movement by his spies, and with several hundred Indians lay in ambush at the bridge across Parent's creek, a mile and a half from the fort. As the English drew near the dangerous pass they could discern the house of Meloche, mentioned before, upon a rising ground to the left, while in front the bridge was dimly visible, and the ridges beyond it seemed like a wall of blackness, partly due to the fog rising from the river. The advance guard were half way over the bridge and the main body just entering upon it. Suddenly there was a wild war-whoop in the darkness, and the ridges, fences, trees and anything which could afford shelter to a savage, burst into flame. Half the advance guard fell at the first discharge; the