... that he is actually within a short distance of Washington, having moved a considerable force from Shepherdstown and Antietam fords down the tow-path of the cannel, or else along the inner roads from Boonsboro ' and Middleton, to the vicinity of Poolesville, Rushville and Rockville. From these points he has direct access to the rear of Washington, and can by an expert movement, destroy the railroad betwee...