pits and railroad cut from Fredericksburg to the Massaponax, near Hamilton's Crossing. One battery of four guns is seen on wooded ridge opposite the Bernard house. The re-enforcement received yesterday by the enemy were one division or three brigades.

JAS. S. HALL,

Captain, Signal Officer.

JUNE 7, 1863-8. 35 a. m.

Commanding Officer Cavalry Corps:

General Hooker directs me to remain here for your instructions until he knows the result of Colonel Duffie's reconnaissance yesterday, and until he can learn whether General Stahel's cavalry can assist. He also suggests that Ames' command remain at Bealeton until further orders.

ULRIC DAHLGREN,

Captain, and Aide-de-Camp.

HEADQUARTERS, CAVALRY CORPS,
June 7, 1863-9 a. m.

General S. WILLIAMS

Adjutant-General, Army of the Potomac:

Have arrived at this place, Warrenton Junction. The command under Duffie has returned. Went within 4 miles of Culpeper, the enemy's skirmishers falling back all the time. Let Shaler's command be ready for work at Kelly's Ford early tomorrow morning.

A. PLEASONTON,

Brigadier-General, Commanding.

HEADQUARTERS, CAVALRY CORPS,
June 7, 1863-9. 15 a. m.

General S. WILLIAMS

Adjutant-General, Army of the Potomac:

Captain Dahlgren's dispatch received. Colonel Duffie has returned. The enemy's cavalry fell back as he advanced. He went to within 4 miles of Culpeper. The enemy evidently wished to draw him on. Please have my instructions telegraphed at an early moment, as my preparations will consume some time, and I wish to act before my whereabouts are known.

A. PLEASONTON,

Brigadier-General, Commanding.

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WASHINGTON, D. C.,

June 7, 1863-10. 30 a. m.

Major-General HOOKER,

Falmouth, Va.:

A considerable portion of Heintzelman's cavalry is out scouting, and cannot be communicated with. General Stahel will co-operate with General Buford as far as he has means. To prevent delays,