Discusses the role of cabinet member Charles Tanneguy Duchatel in the French Revolution of 1848. Recognition of Duchatel as the closest and most essential ministerial collaborator of Prime Minister Francois Guizot; Ways in which Duchatel was a typical Orleanist; Aspirations of Duchatel which evoked charges of disloyalty to Guizot; Duchatel's permanent exclusion from politics after 1848.