HEADQUARTERS NINTH ARMY CORPS, July 18, 1864 - 9 p. m.

General WILLIAMS,
Assistant Adjutant-General:

The day has been a quiet one on my lines. The large house opposite the right of my line, known as the Clarke house, was set on fire to-day by one of our shells and consumed. It has been a cover for sharpshooters. General Potter and Wilcox both report the enemy building a new line of works on the crest behind their present line.

A. E. BURNSIDE,

Major-General.

HEADQUARTERS FIRST DIVISION, NINTH ARMY CORPS,
Near Petersburg, Va., July 18, 1864 - 8 a. m.

Lieutenant Colonel L. RICHMOND,

Assistant Adjutant-General, Ninth Army Corps:

COLONEL: I have the honor to report everything quiet along my lines last night, there being very little picket and artillery firing during the night. There were no sings of an attack. The 300 sand-bags have been placed in position on the front line of breast-works.

I am, very respectfully, your obedient servant,

JAMES H. LEDLIE,

Brigadier-General, Commanding Division.

HEADQUARTERS SECOND DIVISION, NINTH ARMY CORPS,
Before Petersburg, Va., July 18, 1864.

Lieutenant Colonel LEWIS RICHMOND,

Assistant Adjutant-General, Ninth Army Corps:

COLONEL: Brigade commanders report that all was quiet during the night, and no movement of the enemy discerned. Every precaution was taken to guard against surprise and meet the anticipated attack. The regiments on fatigue duty were relieved for the night, and kept under arms with the supporting force; they have been returned to fatigue duty this morning. The Seventh Rhode Island Volunteers (engineers) was also under arms, and prepare to support my line in possible emergency.

I have the honor to be, colonel, your obedient servant,

ROBERT B. POTTER,

Brigadier-General, Commanding.

HEADQUARTERS SECOND DIVISION, NINTH ARMY CORPS,
Before Petersburg, Va., July 18, 1864.

Lieutenant Colonel LEWIS RICHMOND,

Assistant Adjutant-General, Ninth Army Corps:

COLONEL: The commanding officer of the First Brigade reports steady firing by the rebels on a portion of our front, but no movement detected. That it is evident they are building a new line of works in rear of the wood that skirts their present line, extending in a continuous