Colonel B[RENT],

Assistant Adjutant-General:

Colonel Cabell and Major Hamilton wish me to state that the explosion was greater than that of McClellan's ammunition train, near Savage Station, York River Railroad, and they think its locality was on James River, near City Point.

O. at 114.

T. H. FEAREY,

Second Lieutenant and Signal Officer.

PLANK ROAD SIGNAL STATION,

August 9, 1864-6.30 p. m.

Major B. R. FISHER:

A train of fifteen wagons moved to our left this a. m. on line of Weldon railroad. No working party observed on fort near Weldon railroad west from station. No movements of troops or change of camps visible.

H. W. FULTON,

Sergeant.

HDQRS. ARMY OF THE POTOMAC, SIGNAL DEPARTMENT,
August 9, 1864.

Major-General HUMPHREYS,

Chief of Staff:

GENERAL: No movements of the enemy to report. They are busily engaged in constructing works in the rear of their mock line along the edge of the woods. They seemed to be staking off a new work during the day 400 or 500 yards to our right of the Gregory Chimneys. They did not work upon the fort west of the Weldon railroad to-day. A train of fifteen wagons passed toward Petersburg this a. m.

Very respectfully, your obedient servant,

B. F. FISHER,

Captain and Chief Signal Officer, Army of the Potomac.

CIRCULAR.] HEADQUARTERS ARMY OF THE POTOMAC,

August 9, 1864-12.20 p. m.

The explosion that took place about an hour ago was an ordnance boat at City Point, sending shell and splinters all over the Point, doing material damage to life and property. At General Grant's headquarters, Colonel Babcock was wounded in the hand, 1 orderly killed, and 3 or 4 wounded. The loss of life and property not yet ascertained.

A. A. HUMPHREYS,

Major-General and Chief of Staff.

(To corps commanders.)

HEADQUARTERS FIFTH ARMY CORPS,
August 9, 1864-9 a. m.

Brigadier General S. WILLIAMS,

Assistant Adjutant-General:

I have the honor to report that all was quiet in my front during the night. A large fire was discovered at or in front of the enemy's line about 9.30 p. m. Enemy were working hard to extinguish it.

G. K. WARREN,

Major-General.