Private practice, Covington, Georgia, 1847-1849
President, University of Mississippi, 1849-1852
Professor, University of Mississippi, 1849-1852, 1855-1857, 1861, 1865-1870
Private practice, Oxford, Mississippi, 1849-1852, 1855-1857, 1865-1873
Private practice, Covington, Georgia, 1852-1853
State representative, Georgia, 1853
Private practice, Macon, Georgia, 1853-1855
U.S. representative from Mississippi, 1857-1860, 1873-1877
Confederate Army lieutenant colonel, Nineteenth Mississippi Regiment, 1861-1862
Special Confederate commissioner to Russia, 1862-1863
Confederate Army judge advocate, Third Army Corps of the Army of Northern Virginia, 1863-1865
U.S. senator from Mississippi, 1877-1885
Secretary of the Interior, 1885-1888
Allotment as Circuit Justice:
Fifth Circuit, January 23, 1888-January 23, 1893