SANDY HOOK, August 4, 1864.

Major-General EMORY:

All quiet on the railroad.

E. L. MOLINEUX,

Colonel, Commanding.

[Indorsement.]

Major-General HUNTER,

Commanding:

You will see my advance is at Sandy Hook.

W. H. EMORY,

Brevet Major-General, Commanding.

HARPER'S FERRY, August 4, 1864-9.35 p. m.

General EMORY:

Have reported, and am going into bivouac at my position.

E. L. MOLINEUX,

Colonel, Commanding.

MONOCACY, August 4, 1864-3.40 [p. m.]

Brigadier-General HOWE:

I am sending you re-enforcements; if you don't need them I wish you would inform me.

D. HUNTER,

Major-General.

HARPER'S FERRY, August 4, 1864-4.15 p. m.

Major-General HUNTER,

Monocacy:

Signal officer reports the enemy moving on this place from Shepherdstown on the Virginia side with cavalry and infantry.

A. P. HOWE,

Brigadier-General.

HARPER'S FERRY, August 4, 1864-6 p. m.

Major-General HNUTER,

Monocacy:

Our cavalry officer at Antietam Creek reports, at 4.30 p. m., he was driven away, and the enemy were crossing cavalry and infantry.

A. P. HOWE,

Brigadier-General.

MONOCACY, August 4, 1864.

(Received 8.30 a. m. 5th.)

General KELLEY:

General Averell has been ordered to pursue the enemy at once, and obey such orders as you may give him.

D. HUNTER,

Major-General, Commanding.