If you have sick and wounded that cannot walk, I will send ambulances. Give them ample for their breakfast, and make out extra returns to cover the issue from your stores.

We are all amply able to whip the enemy if he will give us a chance here.

MANSFIELD,

Brigadier-General.

HEADQUARTERS OF THE ARMY,
Washington, July 23, 1861.

Brigadier-General McDOWELL, Arlington:

An Ohio volunteer, who left Centreville at 9 o'clock yesterday morning, walked to this place, and did not see an enemy. May you not profit by this, and send out for our wounded and stragglers? It is reported that Mr. Jefferson Davis, or the enemy, is advancing upon your lines. This is possible. Rally and compact your troops to meet any emergency.

WINFIELD SCOTT.

HEADQUARTERS OF THE ARMY,
Washington, July 23, 1861-11.30 a. m.

Brigadier-General McDOWELL, Arlington:

The General-in-Chief directs that you have a suitable escort at the Georgetown Ferry at one o'clock to-day to meet the President of the United States, and accompany him throughout lines to visit the troops.

The General also directs that after this service is performed all the companies of cavalry except two be sent over to this side the river and report to General Mansfield.

E. D. TOWNSEND,

Assistant Adjutant-General.

HEADQUARTERS OF THE ARMY,
Washington, July 23, 1861.

Brigadier-General McDOWELL, Commanding, &c., Arlington, Va.:

Colonel E. D. Keys sends word he is at Ohio camps with the well part of his brigade. Twenty-five wagons with provisions have just been sent forward.

He wants well men of ohio regiments and Second New York to be sent to him to help load their knapsacks and camp equipage into wagons. He will protect them. There are no more than twenty-five wagons can be sent from here. The General-in-Chief desires you to designate as soon as possible the regiments to remain on other side. Keep none but long-term volunteers.

By command of General Scott:

SCHUYLER HAMILTON.