ecessary steps were at once taken to render such an attempt
abortive. Our pickets were doubled; Admiral Porter was notified, so
that the river might be more closely watched; material was collected on
the west bank of the river to be set on fire and light up the river if
the attempt was made; and batteries were established along the levee
crossing the peninsula on the Louisiana side. Had the attempt been made
the garrison of Vicksburg would have been drowned, or made prisoners on
the Louisiana side. General Richard Taylor was expected on the west
bank to co-operate in this movement, I believe, but he did not come, nor
could he have done so with a force sufficient to be of service. The
Mississippi was now in our possession from its source to its mouth,
except in the immediate front of Vicksburg and of Port Hudson. We had
nearly exhausted the country, along a line drawn from Lake Providence to
opposite Bruinsburg. The roads west were not of a character to draw
supplies over for any considerable force.

By the 1st of July our approaches had reached the enemy's ditch at a
number of places. At ten points we could move under cover to within
from five to one hundred yards of the enemy. Orders were given to make
all preparations for assault on the 6th of July. The debouches were
ordered widened to afford easy egress, while the approaches were also to
be widened to admit the troops to pass through four abreast. Plank, and
bags filled with cotton packed in tightly, were ordered prepared, to
enable the troops to cross the ditches.

On the night of the 1st of July Johnston was between Brownsville and the
Big Black, and wrote Pemberton from there that about the 7th of the
month an attempt would be made to create a diversion to enable him to
cut his way out. Pemberton was a prisoner before this message reached
him.

On July 1st Pemberton, seeing no hope of outside relief, addressed the
following letter to each of his four division commanders:

"Unless the siege of Vicksburg is raised, or supplies are thrown in, it
will become necessary very shortly to evacuate the place. I see no
prospect of the former, and there are many great, if not insuperable
obstacles in the way of the latter. You are, therefore, requested to
inform me with as little delay as possible, as to the condition of your
troops and their ability to make the marches and undergo the fatigues
necessary to accomplish a successful evacuation."

Two of his ge