WASHINGTON JUNCTION, May 2, 1864.

(Received 2.45 p. m.)

Major General H. W. HALLECK,

Chief of Staff:

I understood from you that troops from the Pennsylvania Reserve Corps were to relieve the Second Pennsylvania Artillery at Alexandria. It this is correct when shall I expect them to join the corps?

A. E. BURNSIDE,

Major-General.

WASHINGTON, May 2, 1864-3.30 p. m.

Major-General BURNSIDE,

Warrenton Junction, Va.:

By General Grant's orders the Second Pennsylvania Artillery replaced General Meade's train guards, under General Briggs. We have nothing at present to relieve them, but hope to do so soon. Will let you know. Advise me of any change in your position.

H. W. HALLECK,

Major-General and Chief of Staff.

POINT LOOKOUT, May 2, 1864-noon.

Major-General BURNSIDE:

Captain Hooker, Potomac Flotilla, send word that the force which crossed the Rappahannock is very heady; composed of many thousand men' principally cavalry. Probably intended as a flank movement against General Grant.

A. G. DRAPER,

Colonel, Commanding District.

HEADQUARTERS ARMY OF THE POTOMAC,
May 2, 1864.

Major-General BURNSIDE:

The Point Lookout dispatch not reliable. Scouts in this morning who crossed below United States Ford had heard nothing and seen nothing to confirm it. I have told Sheridan to send a scouting party in that direction.

GEO. G. MEADE,

Major-General.

WASHINGTON JUNCTION, May 2, 1864.

General MEADE:

The following dispatch just received from General Benham:

WASHINGTON, MAY 2, 1864.

General BURNSIDE:

The bridge is a loaded on the cars to leave between 12 and 1 p. m. Captain Slosson, Fifteenth New York Volunteers, directed to report to you with a suggestion which, if approved by you, will expedite and save labor, and as it appears to be as well for both