Near Vicksburg.
Wednesday, 13th.—Last night started at 9 o’clock and marched till 1 this morning. Rested until day. Started at daylight; crossed Big Black on railroad bridge at 11 A. M. Halted in line two miles from Edwards’ Station, near Vicksburg. Change of brigadier-generals to-day, General Taylor being superseded by General Cummings, of Georgia.