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.COMMISSIONED BRIGADIER-GENERAL—COMMAND AT IRONTON, MO.—JEFFERSON CITY—CAPE GIRARDEAU—GENERAL PRENTISS—SEIZURE OF PADUCAH—HEADQUARTERS AT CAIRO.CHAPTER XIX.