'...Ordo Missalis secundum consuetudinem Curie Romane', preceded by some prayers and a calendar (fol. 1). The Canon of the Mass, with a picture of the Crucifixion, is at fol. 145. At fol. 314 is a mass' In translatione sanctorum Fortunati et Cassiani', whose relics were in the church: this, and the mention of St. Romana, prove that the volume was for use in the cathedral of Todi (Tudertum) in Umbria. There are musical notes in parts. At fola. 10v, 144v, 205v are the following…