Last year, Professor Houghton accepted an invitation from Professor Maria Chiara Scappaticcio, Principal Investigator of the PLATINUM project, to edit a set of Latin Christian texts designated as papyri, which included these fragments. Professor Houghton was already collaborating with Cambridge University Library on the palimpsest Codex Zacynthius project. By examining high-resolution digital images of the fragments, he was able to identify them as preserving text from two further works by Augustine, the Contra sermonem Arrianorum (Against the Sermon of the Arians) and the augmented version of Sermon 225. The latter was only possible due to the publication of the first-ever edition of Sermo 225 auct. by Clemens Weidmann in 2015.