See Procopius, de Bell. Vandal. 1. i. c. 4, p. 186 [tom. i. p. 327, ed. Bonn]. Valentinian published several humane laws to relieve the distress of his Numidian and Mauritanian subjects; he discharged them in a great measure from the payment of their debts, reduced their tribute to one-eighth, and gave them a right of appeal from their provincial magistrates to the praefect of Rome. Cod. Theod. tom. vi. Novell. p. 11, 12.