VAN DORN'S MOVEMENTS—BATTLE OF CORINTH—COMMAND OF THE DEPARTMENT OF THE TENNESSEE.THE CAMPAIGN AGAINST VICKSBURG—EMPLOYING THE FREEDMEN—OCCUPATION OF HOLLY SPRINGS—SHERMAN ORDERED TO MEMPHIS—SHERMAN'S MOVEMENTS DOWN THE MISSISSIPPI—VAN DORN CAPTURES HOLLY SPRINGS—COLLECTING FORAGE AND FOOD.CHAPTER XXX.