The Vita Augustini written by Possidius has come down to us in a very great number of manuscripts. Understandably its editors worked with a rather small selection of them. Among the textual witnesses left aside there is Cod. 571 of the Stiftsbibliothek St. Gallen (S). This beautiful manuscript of Carolingian age shows, apart from many erroneous or otherwise negligible lectures, a certain number of peculiarities which at least could be of some interest, though very few of them offer a better reading of the text as such. The mere fact that the scribe of S committed a great number of mistakes of its own, makes it probable that these other, more interesting variants go back to an earlier stage of the transmission of the text. Many of them are attested also by other textual witnesses recorded by the editors, yet a considerable number of the special readings of S have been unknown so far. In this paper they are presented and briefly discussed. - In S the text of the Vita is divided into 50 chapters, in contrast to the textus receptus: 31 chapters (besides the praefatio). The hitherto unknown table of contents preceding the Vita in S is edited as an appendix.