Tractates on the Gospel of John, 11-27Of the 124 tractates that St. Augustine delivered to his congregation at Hippo Regius, the first fifty four form a distinct group. They differ in length and character from the remaining tractates, contain many chronological references, and consist of bitter attacks on the Donatists and other heresies. The remaining tractates (55 124) are brief and contain no chronological references to prior tractates. Scholars maintain that the latter were dictated