...ening of July 30. They succeeded in entering the fort with provisions. Pontiac had already summoned Gladwin to surrender; now Dalzell proposed to make a sortie and attack the besieging Indians. Gladwin thought it would be imprudent, but Dalzell persisted, and before daylight on the morning of July 31 he sallied out with 240 chosen men to attack the Indians who lay about a mile up the river. Ponti...