The enterprise and armament of Julian are described by himself (Epist. xxvii.), Ammianus Marcellinus (xxiii. 3, 4, 5), Libanius (Orat. Parent. c. 108, 109, p. 332, 333), Zosimus (1. iii. [c. 1l] p. 160, 161, 162), Sozomen (l. vi. c. l), and John Malala (tom. ii. p. 17 [ed. Ox.; p. 328, ed. Bonn]).