From our army in Northern Virginia.
It was stated at Winchester on Tuesday evening and Wednesday morning that the enemy were crossing the Potomac in heavy force at be and Point of Roe and that their cavalry were in the neighborhood of on the Shenandoah river. Of the movements of our army we cannot speak. Ending their so colours in the lower Valley, our forces off actually destroyed the Baltimore and Ohio, and the Winchester and Potomac Railroads. The Edstarers read was tern up from the neighborhood of Mr. John's in Morgan county to within of Harper's Ferry — in all, a distance of some forty miles. All the depots on the read were torn down or burned, and the fine hotel, belonging to the company, at Mar. lusburg, was committed to the flames. The crost and stills of the road were taken up and fired, and the heavy iron laid on and bent by the heat, so as to render then dt for use. The Winchester road was destroyed entirely from Winchester to Halltown, some twenty-five miles. The lowered end of this road was destroyed within right and in hearing of the enemy's on Beliv without the slightest resistance being offered. It will require some time to repel these roads so as to make them of any service; and if the Yankee should invade the Valley ag the waiter, they will have to furnish other means of transportation.