d Bull Run, at Blackburn's Ford
and Stone Bridge; the coming of his own re-enforcing brigades from far
down the valley, toward Manassas; and the manoeuvres of our advancing
columns under McDowell.

As the battle proceeds, the Enemy's strength on the third new line of
defense increases, until he has 22 guns, 260 Cavalry, and 12 regiments
of Infantry, now engaged. It is interesting to observe also, that, of
these, 16 of the guns, 9 of the regiments, and all of the Cavalry
(Stuart's), belong to Johnston's Army of the Shenandoah, while only 6
guns and 3 Infantry regiments thus engaged, belong to Beauregard's Army
of the Potomac. Thus the burden of the battle has been, and is being,
borne by Johnston's, and not Beauregard's troops--in the proportion of
about three of the former, to one of the latter,--which, for over two
hours, maintain their position despite many successive assaults we make
upon them.

It is after 2 o'clock P.M., when Howard's Brigade, of Heintzelman's
Division, reaches the battle-field, almost broken down with exhaustion.
By order of Heintzelman it has moved at double-quick for a mile of the
way, until, under the broiling heat, it can do so no longer. The last
two miles of the weary tramp, while the head of the brigade has moved at
quick time, the rear, having lost distances, moves, much of the time, at
a double-quick. As a consequence, many of Howard's men drop out, and
absolutely faint from exhaustion.

As Howard's Brigade approaches the field, besides the ambulances and
litters, conveying to the rear the wounded and dying, crowds of
retreating stragglers meet and tell it to hurry along; that the Enemy
has been driven back a mile; but, as it marches along, its regiments do
not feel particularly encouraged by the disorganization so prevalent;
and the fact that as they come into action, the thunders of the Rebel
Artillery do not seem to meet an adequately voluminous response--from
the Union side, seems to them, a portent of evil. Weary and fagged out,
they are permitted to rest, for a while, under cover.

Up to this time, our line, increased, as it has been, by the brigades of
Sherman and Keyes, on the left of Burnside, and of Franklin and Wilcox,
on the right of Porter, has continued to advance victoriously. Our
troops are, to be sure, considerably scattered, having been "moved from
point to point" a good deal. On our left, the Enemy has been driven
back nearly a mile, and Keyes's Brigade is pu