WASHINGTON, August 2, 1864--12. 40 a. m.

Major-General COUCH,

Pittsburg, Pa.:

I have no information later than that from General Averell. These accounts indicate that only a small force of rebels is north of the Potomac.

H. W. HALLECK,

Major-General and Chief of Staff.

PITTSBURG, PA., August 2, 1864--8. 30 p. m.

(Received 10. 50 p. m.)

Major General H. W. HALLECK:

The line to Cumberland is open, but I can't get anything from General Kelley. Scouts near there last evening report a very large force of cavalry in the vicinity, and that Kelley had sent his teams and led horses to Berlin, which is southwest of Bedford. Very likely that McCausland has not gone into Virginia as yet. Fifty scouts have been sent to Uniontown by rail to go into Virginia. Averell reported at 9 a. m. from Hancock, via McConnellsburg, no enemy north of Potomac from that place to Falling Waters.

D. N. COUCH,

Major-General.

PITTSBURG, PA., August 2, 1864--9. 40 p. m.

(Received 11 p. m.)

Major-General HALLECK:

Scouts from Somerset say McCausland beaten by Kelley at Cumberland. Former retreating, Kelley following, and Averell in enemy's front. No enemy in vicinity of Romney.

D. N. COUCH,

Major-General.

ORDERS.] HEADQUARTERS SIXTH ARMY CORPS,

August 2, 1864.

This command will move at once to Washington, via Monocacy and the Rockville road, halting near Hyattstown to-night.

By command of Major-General Wright:

CHAS. A. WHITTIER,

Acting Assistant Adjutant-General.

ORDERS.] HEADQUARTERS SIXTH AND NINETEENTH CORPS,

August 2, 1864.

The division of the Nineteenth Corps under Brigadier-General Dwight, and the Maryland brigade, Brigadier-General Kenly, will report at once to Bvt. Major General William H. Emory, commanding Nineteenth Corps, at Monocacy Junction.

Waterman's Battery C, First Rhode Island Artillery, will report to Colonel C. H. Tompkins for assignment.

By command of Major-General Wright:

CHAS. A. WHITTIER,

Major and Acting Assistant Adjutant-General.