Headquarters DEPARTMENT OF WASHINGTON,

June 19, 1863-1. 15. p. m.

General J. STAHEL, Commanding Cavalry, Fairfax Court-House: GENERAL: The major-general commanding desires that you comply with the desire of General Hooker. Your pickets, as far as possible, must be left out. Please notify Abercrombie. Respectfully,

J. H. TAYLOR,

Chief of Staff, Assistant Adjutant-General.

June 19, 1863-6. 30 p. m.

Major-General HEINTZELMAN:

I learn that you have a force of 2, 000 infantry and two batteries at Poolesville. I request that they be ordered to seize the South Mountain Pass, and to hold it at all hazards. It is important that they should take possession of it to-morrow.

JOSEPH HOOKER,

Major-General.

HEADQUARTERS DEPARTMENT OF WASHINGTON,
June 19, 1863-7. 15 p. m.

General Butterfield, Chief of Staff:

There are two strong regiments of infantry (800 each), five troops of cavalry, and one battery at Poolesville. South Mountain Pass is in the Middle Department. Troops at Poolesville have a long line to cover. Cannot General Schenck seize the pass?

S. P. HEINTZELMAN,

Commanding.

June 19, 1863-8. 40 p. m.

General HEINTZELAMN, Washington:

General Hooker will try and get along without using the force at Poolesville for the present, as suggested.

DANL. BUTTERFIELD,

Major-General, Chief of Staff.

BALTIMORE, June 19, 1863-7. 10 a. m.

Brigadier-General TYLER, Harper's Ferry, W. Va.:

Your two dispatches of last night received. The building by Jones of a permanent bridge over the canal I think rather indicates that the forces which have crossed above you are the advance of General Lee's army, which is now reported to be passing in force into the Shenandoah Valley. Watch closely. A day or two will develop.

DONN PIATT,

Lieutenant-Colonel, and Chief of Staff.