FIRED OUT OF OLD CAPITOL PRISON—"DON'T COME HERE AGAIN!"—MY FRIEND THE JEW SUTLER—OUT IN A NEW RIG—AT THE CANTERBURY THEATRE.LIFE AT HEADQUARTERS ARMY OF POTOMAC—SOME STARTLING REVELATIONS AS TO THE "TRUE INWARDNESS," NOT TO SAY CUSSEDNESS, OF OUR HIGH UNION OFFICIALS—INTERESTING DESCRIPTIONS OF FAMILY LIFE AT HEADQUARTERS—"SIGNALS"—CIPHERS—AGAIN VOLUNTEERING FOR SECRET SERVICE INSIDE THE REBEL ARMY—A REMARKABLE STATEMENT ABOUT BURNSIDE AND HOOKER—INTRODUCTION TO GENERAL MEADE—A NIGHT AT RAPPAHANNOCK INTERVIEWING REBEL PICKETS.CHAPTER XXIX.