...in charge of Lieut. French, of Rickett's battery, were ordered to the tow-path opposite Harrison's island. Col. Devens, in pursuance of his orders, crossed and proceeded to the point indicated, Col. Lee remaining on the bluff with 100 men to cover his return. To distract attention from Col. Devens's movements, and to make a reconnaissance in the direction of Leesburg from Edwards's Ferry, I direct...