HEADQUARTERS MIDDLE DEPARTMENT,
Baltimore, Md., July 14, 1864.

Brigadier-General LOCKWOOD:

GENERAL: I am directed by Major-General Wallace to request you to inform him whether you have seen General Tyler and made any arrangements for sending more troops to the Relay House this p. m. Also, to call your attention to the fact that General Kenly withdrew most of the troops from the east from of the defenses of the city, thereby weakening it very much, and to request that you strengthen the works there as much as possible.

Respectfully, your obedient servant,

SAML. B. LAWRENCE,

Assistant Adjutant-General.

HEADQUARTERS MIDDLE DEPARTMENT,
Baltimore, Md., July 14, 1864.

Brigadier-General LOCKWOOD,

U. S. Volunteers,

Commanding Defenses of Baltimore:

GENERAL: I am instructed by the general commanding to request you to direct Colonel Clendenin's cavalry to scout the region of country between the Northern Central Railroad, as far up as Cockeysville and Gunpowder River. His detachments will be required to make morning and evening reports, which you will forward to these headquarters.

I am, general, very respectfully, your obedient servant,

SAML. B. LAWRENCE,

Lieutenant-Colonel and Assistant Adjutant-General.

HEADQUARTERS MIDDLE DEPARTMENT,
Baltimore, Md., July 14, 1864.

Brigadier-General LOCKWOOD:

GENERAL: I am instructed by Major-General Wallace to request you to establish the headquarters of the cavalry under Major Petherbridge at Camp Carroll, and that you direct Major P. to remove his headquarters there to-morrow. The room used by him at these headquarters is wanted for other purposes.

Respectfully, your obedient servant,

SAML. B. LAWRENCE,

Assistant Adjutant-General.

HEADQUARTERS MIDDLE DEPARTMENT,
Baltimore, July 14, 1864.

Brigadier-General LOCKWOOD:

GENERAL: I am directed by the general commanding to say that for the present the command of mounted citizens under Major Petherbridge will be used to scour the country on all the main roads leading to the city of Baltimore. You will, therefore, select one detachment to patrol the road to Ellicott's Mills and beyond that point; another to patrol the roads to Elysville and beyond that point; another