CHAPTER XXVII.
GETTYSBURG.
A Hasty Departure.--At Harrisburg.--_En route_ for the Army of the Potomac.--The Battle-Field at Gettysburg.--Appearance of the Cemetery.--Importance of the Position.--The Configuration of Ground.--Traces of Battle.--Round Hill.--General Meade's Head-Quarters.--Appearance of the Dead.--Through the Forests along the Line.--Retreat and Pursuit of Lee.