The reformation of the palace is described by Ammianus (xxii. 4), Libanius (Orat. Parent. . lxii. p. 288, etc.), Mamertinus (in Panegyr. Vet. .i. [x.] Il),Socrates(L iii. c. 1), and Zonaras(tom. ii. 1. xiii. [c. 12] p. 24).