OUTBREAK OF THE REBELLION—PRESIDING AT A UNION MEETING—MUSTERING OFFICER OF STATE TROOPS—LYON AT CAMP JACKSON—SERVICES TENDERED TO THE GOVERNMENT.APPOINTED COLONEL OF THE 21ST ILLINOIS—PERSONNEL OF THE REGIMENT—GENERAL LOGAN—MARCH TO MISSOURI—MOVEMENT AGAINST HARRIS AT FLORIDA, MO.—GENERAL POPE IN COMMAND—STATIONED AT MEXICO, MO.CHAPTER XVIII.