SOME PERSONAL REMINISCENCES OF SERVICE IN THE CAVALRY OF THE ARMY OF THE POTOMAC. At the earnest solicitation of my many military friends, I have thrown together some reminiscences of my personal experience as a cavalryman during the late War of the Rebellion. Though my four years of campaigning began with a three months' tour of tramping with the "dough-boys" under General Patterson in the spring and early summer of 1861, the latter was only a prolonged picnic. Two days before I was mustered ou