[Massachusetts]. The dust was very dense and assisted the men to get off after their flanks were turned. He says McCausland's cavalry drills but does not fight well. When he left he had formed his men on the heights just this side of Rockville, ready to advance. Thinks the enemy fell back again and his have advanced. He could not ascertain the exact directions their infantry columns had taken. No definite information on this subject.

M. D. HARDIN,

Brigadier-General.

HDQRS. DEPT. OF WASHINGTON, 22nd ARMY CORPS,
July 13, 1864.

Major-General MCCOOK,

Commanding at Stevens:

GENERAL: The major-general commanding desires that you send Battery L, First Ohio Light Artillery, to report to Major-General Gillmore, at Tennallytown, July 14, as early in the morning as practicable.

Very respectfully,

J. H. TAYLOR,

Chief of Staff and Assistant Adjutant-General.

FORT STEVENS, July 13, 1864.

(Received 10. 45 p. m.)

Lieutenant Colonel J. H. TAYLOR,

Assistant Adjutant-General:

The battery will move at 4 a. m. to-morrow.

A. MCD. MCCOOK,

Major-General.

HDQRS. DEPT. OF WASHINGTON, 22nd ARMY CORPS,
July 13, 1864. (Received 11 p. m.)

Major-General MCCOOK,

Fort Stevens:

GENERAL: The major-general commanding desires that you assign General Paine to the command relinquished by General Gillmore on your line, with headquarters at Fort Lincoln.

Respectfully,

J. H. TAYLOR,

Chief of Staff and Assistant Adjutant-General.

FORT STEVENS, July 13, 1864.

(Received 10. 50 p. m.)

Major-General AUGUR:

I shall ride to-morrow morning along my lines, starting at 4, to inspect troops and defenses. Telegraph all orders for me to this post, whence they will be telegraphed forward to me. I have cleared out the rebel hospital except about thirty men impossible to move. Sent to Lincoln Hospital.

A. MCD. MCCOOK,

Major-General.