This letter is addressed by Alypius and Augustin to Naucelio, a person through whom they had discussed the question of the Donatist schism with Clarentius, an aged Donatist bishop (probably the same with the Numidian bishop of Tabraca, who took part in the Conference at Carthage in 411 a.d.). The ground traversed in the letter is the same as in pages 296 and 297, in Letter LI., regarding the inconsistencies of the Donatists in the case of Felicianus of Musti. We therefore leave it untranslated.