...lunteer cavalry, and the Baltimore battery, at Berryville, Colonel McReynolds, of the First New-York cavalry, commanding. My instructions to Col. McReynolds were to keep open our communication with Harper's Ferry , and to watch the passes of the Blue Ridge (Snicker's and Ashby's Gaps) and the fords of the Shenandoah River known as Snicker's and Berry's. To this end he was to cause to be diligently scouted, the...