reached Warrenton Junction last night. I hear nothing of Porter and Reynolds. They should hold the Rappahannock. A portion of the enemy's forces crossed at Sulphur Springs and were attacked by Pope late yesterday afternoon. He expected to renew the fight this morning, but the enemy is retreating. You can either remain at Aquia or come to Alexandria, as you may deem best, so as to direct the landing of your troops.

H. W. HALLECK,

General-in-Chief.

FALMOUTH, VA., August 24, 1862 - 9.40 p. m.

(Received 10 p. m.)

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

Please inform me exactly where General Pope's troops are, that I may know what part of the Rappahannock is to be crossed from here and what transportation is necessary to supply the troops going to join him.

Up to what point is the Orange and Alexandria Railroad now available? Where are the enemy in force?

GEO. B. MCCLELLAN,

Major-General.

WASHINGTON, D. C., August 24, 1862.

Major-General MCCLELLAN, Falmouth, Va.:

You ask me for information which I cannot give. I do not know either where General Pope is or where the enemy in force is. These are matters which I have all day been most anxious to ascertain.

H. W. HALLECK,

General-in-Chief.

WAR DEPARTMENT,

Washington, D. C., August 24, 1862.

Major-General MCCLELLAN, Falmouth:

There is nothing more to communicate to-night. I do not expect to hear from Pope before to-morrow. Will telegraph to you at Aquia.

Good night.

H. W. HALLECK,

General-in-Chief.

FALMOUTH, VA.,

August 24, 1862 - 12 midnight.

Major-General HALLECK:

Are you in communication with Warrenton Junction and are Pope's forces in advance of Warrenton Junction?

GEO. B. MCCLELLAN,

Major-General.

WASHINGTON, D. C., August 24, 1862.

(Sent August 25, 12.50 a. m.)

Major-General MCCLELLAN:

General Pope did not retreat from Rappahannock Station, but advanced and attacked the enemy near Sulphur Springs and is now in