..., about six o'clock P. M., halted for the night, and went into camp a mile or more up the valley from Brown's Ferry. Here we learned that a pontoon-bridge had been thrown across the river, and that General Hargen 's brigade held the heights on the south side of it. Geary's division being in the rear, and being anxious to hold both roads leading to Kelly's Ferry, he was directed to encamp near Wauhatchie, t...