...n in Baltimore and Washington is being hurried to Frederick to intercept Lee's flying and demoralized troops. A great battle will probably come off to-morrow, which will doubtless be a finality, as Gen. Meade 's forces, reinforced by Generals Couch, Schenck, and Heintzelman, will be nearly double Lee's army. Headquarters Army of the Potomac, July 6 The rebel General Perier is wounded, Gens. Johnston ...