cannot feel secure against the enemy's crossing the Potomac and attacking on that side.

J. G. BARNARD,

Brigadier-General.

HEADQUARTERS,
Alexandria, Va., August 29, 1862.

General H. W. HALLECK, General-in-Chief:

The following dispatch is respectfully communicated to you for your information:

ALEXANDRIA, VA., August 29, 1862.

General S. WILLIAMS, Assistant Adjutant-General:

All the teams at this depot have been in constant use to-day, and but few of them have returned. I have given directions to have them loaded up with subsistence stores as they come in. Of the 160 teams belonging to the depot I cannot say how many may get in before morning. Colonel Rucker will send me 100 teams to-morrow morning, and these I will also have loaded.

C. B. FERGUSON,

Captain and Assistant Quartermaster.

GEO. B. McCLELLAN,

Major-General, Commanding.

HEADQUARTERS REYNOLD'S DIVISION,
August 29, 1862 - 3.30.

Colonel SCHRIVER, Chief of Staff:

COLONEL: General Sigel is moving on Gainesville down the pike, with my right near Groveton, my left toward the railroad.

I do not know where anybody is but Sigel. Please let me hear from you.

Respectfully,

JOHN F. REYNOLDS,

Brigadier-General, Commanding.

HEADQUARTERS CAVALRY BRIGADE,
August 29, 1862.

[General McDOWELL]:

GENERAL: A large force from Thoroughfare Gap is making a junction through Gainesville up the Centreville road with the forces in the direction of the cannonading.

JNO. BUFORD,

Brigadier-General.

HEADQUARTERS ARMY OF VIRGINIA,
Centreville, August 29, 1862.

Major General FITZ JOHN PORTER:

Push forward with your corps and King's division, which you will take with you, upon Gainesville. I am following the enemy down the Warrenton turnpike. Be expeditious or we will lose much.

JNO. POPE,

Major-General, Commanding.