The French cross the Po at Placenza—The Battle of Fombio—The Bridge of Lodi—Napoleon occupies Milan—Resigns, and resumes his command—Insurrection of Pavia—Military Executions—The French pass the Mincio at Borghetto—Beaulieu retreats behind the Adige—Mantua besieged—Peace with the King of the Two Sicilies—The Pope buys a Respite. 30