...or Gen Frank P Blair, of his army. The pontoon bridge at Brown's Ferry having been broken up by the drift consequent upon the rise in the river and rafts sent down by the enemy, the other division ( Osterhans 's) was detained on the south side, and was on the night of the 23d ordered, unless it could get across by eight o'clock the next morning, to report to Hooker, who was instructed in this event to atta...