All available troops from this place and Maryland have been sent to West Virginia. General Sedgwick has been asked to give yu such co- operation as he can, and to communicate directly with you by telegraph.

H. W. HALLECK,

General- in- Chief.

HEADQUARTERS EIGHTEENTH ARMY CORPS,
Fortress Monroe, February 5, 1864.

Honorable E. M. STANTON,

Secretary of War:

SIR: I send inclosed for your perusal the information I have acquired of the enemy's forces and dispositions about Richmond. The letter commencing"Dear Sir," on the first page, is a cipher letter to me from a lady in Richmond, with whom I am in correspondence. The bearer of the letter brought me a private token, showing that he was to be trusted. Thee are not nown in Lee's army or bout Richmond 30,000 men. I can get no co- operation from Segwick. Fory thousand men on the south side of the James would be sufficient for the object of taking and pemanintly holding Richmond. The roaes have been good up to- to- day. You will see that the prisoners are to be sen away to Georgia. Now, or never, is the time to strike. On Sunday I shall make a dash with 6,000 men, all I have that can possibly be spared. If we win, it will pay the cost; if we fail, it will at least be in an attempt to do our duty and rescue our friends. New Berne is relieved,a nd, I believe, permanently.

I have marked this "Private and immediate," so that it shall at once come into your hands.

Respectfully, your obedient servant,

BENJ. F. BUTLER,

Major- General, Commanding.

P. S. - Since writing the above Sedgwick telegraphs me as follows:

HEADQUARTERS ARMY OF THE POTOMAC,
February 5, 1864- 2 p. m.

Major General B. F. BUTLER,

Commanding.:

A dispatch from the General- in- Chief directs such co-operation with you as I can give. I will be ready to do so on Sunday, the 7th instant, by vigorous demonstrations in my front, unless the weather should render it impossible.

J. SEDGWICK,

Major- General.

I have answered as follows:

HEADQUARTERS,
Fortress Monroe, February 5, 1864.

Major General J. SEDGWICK,

Commanding, Headquarters Army of the Potomac:

Can you not make it to- morrow without regard to weather! I hope to strike the point Sunday morning at 6 o'clock.

B. F. BUTLER,

Major- General, Commanding.

So we may get some co- operation. All the better. We will do our duty.

B. F. B.