Ample materials for the history of this third persecution of Athanasius may be found in his own works. See particularly his very able Apology to Constantius (tom. i. p. 673 [tom. i. p. 233 sqq. ed. Bened.]), his first Apology for his flight (p. 701 tom. i. p. 253 sqq. ed. Bened.]), his prolix Epistle to the Solitaries (p. 808), and the original Protest of the People of Alexandria against the violences committed by Syrianus (p. 866 [p. 311, ed. Bened.]) Sozomen (1. iv. c. 9) has thrown into the narrative two or three luminous and important circumstances.