SUMMARY: A fragmentary codex of Priscian’s Institutiones is extant in Piacenza, Archivio Capitolare
di S. Antonino, Cass. 49, fr. 47. The Institutiones were copied by eight different scribes
working side by side in a scriptorium north of the Alps in the 10th century. The MS margins
contain a rich collection of glosses in part written by the same copyists of the text, in part by
later hands. The codex apparently reached North Italy, where it was bound with dismembered
leaves of a Missal, by the end of the 12th century or thereabouts. The Missal leaves, written in
the Po valley, 11th century, show a text descending from the Sacramentarium Gregorianum
and extended with formulas taken from the Gelasianum.