...s not used to a gay animal, and threw him, fortunately without inflicting serious injury.--A few days since, Gen. J. recrossed the river, driving the enemy out of Martinsburg. He now has surrounded Harper's Ferry , which is still held by the enemy. When that place is taken, as a base for further operations, our whole army will doubtless move to the interior of Maryland. Saturday night, Ex-Gov. Lowe made a th...