HARPER'S FERRY, July 26, 1864.

Brigadier-General KELLEY, Cumberland:

General Crook is within communicating distance of the Ferry to-night. His losses not yet estimated. Probably not large, numerically. He loses some valuable officers - Colonel Mulligan, badly wounded, in hands of enemy; Colonel Thoburn probably captured; Lieutenant Nugent believed to be killed. No losses in artillery or transportation. Re-enforcements are moving from the east to report to General Hunter. General Averell, with cavalry force, has gone to Hancock to remain in vicinity for the present. Force and intentions of enemy not yet developed. Will keep you advised of movements here.

T. MELVIN,

Assistant Adjutant-General.

CUMBERLAND, July 26, 1864-10. 30 a. m.

J. B. FORD, Esq., Wheeling:

Nothing new this a. m. ; no communication from below Numbers 12. Have sent to iron-clad cars to Back Creek on reconnaissance. I feel very apprehensive that the road will be destroyed. I have but a small force. Please keep me advised of any news from Baltimore or Harper's Ferry.

B. F. KELLEY,

Brigadier-General.

Please show this to the Governor.

CUMBERLAND, July 26, 1864-9 a. m.

Brigadier-General SULLIVAN, Oakland:

Nothing from below this a. m. ; telegraph not working below Numbers 12. Crook was being driven through Martinsburg yesterday at 12 o'clock when the wires went down.

B. F. KELLEY,

Brigadier-General.

NEW CREEK, July 26, 1864.

General KELLEY:

I have just arrived at this post with my command and report to you for orders, as you directed.

R. STEVENSON,

Colonel, Commanding.

CUMBERLAND, July 26, 1864.

Colonel STEVENSON,

New Creek, W. Va.:

Your command will go into camp and you will assume command of all the troops at New Creek, retaining Lieutenant-Colonel Hoy as commandant of the post.

By order of Brigadier-General Kelley:

C. A. FREEMAN,

Lieutenant and Acting Assistant Adjutant-General.