The original monuments of the schism, of the charges of the Greeks against the Latins, are deposited in the epistles of Photius (Epist Encyclica, ii. p. 47 - 61,) and of Michael Cerularius, (Canisii Antiq. Lectiones, tom. iii. p. i. p. 281 -324, edit. Basnage, with the prolix answer of Cardinal Humbert).