or
more than one hundred miles, flows along the Western foot of the Blue
Ridge, toward the North-East, until it empties into the Potomac, at
Harper's Ferry.

The Orange and Alexandria railroad runs from Alexandria,--on the
opposite bank of the Potomac from Washington, and a few miles below
the Capital,--in a general Southeasterly direction, to Culpepper
Court-House; thence Southerly to Gordonsville, where it joins the
Virginia Central--the Western branch of which runs thence through
Charlotteville, Staunton, and Covington, across the ridges and valleys
of the Alleghanies, while its Eastern branch, taking a general
South-easterly direction, crosses the Richmond and Fredricksburg
railroad at Hanover Junction, some twenty miles North of Richmond,
and thence sweeps Southerly to the Rebel capital.

It is along this Easterly branch of the Virginia Central that Rebel
re-enforcements will be hurried to Beauregard, from Richmond to
Gordonsville, and thence, by the Orange and Alexandria railroad, to
Manassas Junction.

Some twenty-five miles from Alexandria, a short railroad-feeder--which
runs from Strasburg, in the Shenandoah Valley, through the Blue Ridge,
at Manassas Gap, in an East-South-easterly direction--strikes the
Alexandria and Orange railroad. The point of contact is Manassas
Junction; and it is along this Manassas-Gap feeder that Johnston, with
his Army at Winchester--some twenty miles North-North-East of Strasburg
--expects, in case of attack by Patterson, to be re-enforced by
Beauregard; or, in case the latter is assailed, to go to his assistance,
after shaking off Patterson.

This little link of railroad, known as the Manassas Gap railroad, is
therefore an important factor in the game of War, now commencing in
earnest; and it had, as we shall see, very much to do, not only with the
advance of McDowell's Union Army upon Bull Run, but also with the result
of the first pitched battle thereabout fought.

From Alexandria, some twelve miles to the Westward, runs a fine turnpike
road to Fairfax Court-House; thence, continuing Westward, but gradually
and slightly dipping award the South, it passes through Germantown,
Centreville, and Groveton, to Warrenton.

This "Warrenton Pike"--as it is termed--also plays a somewhat
conspicuous part, before, during, and after the Battle of Bull Run. For
most of its length, from Fairfax Court-House to Warrenton, the Warrenton
Pike pursues a course almost parallel with the Orang