Parchment, ii paper flyleaves + ii medieval parchment flyleaves + 280 fols. (foliated iii-xii in modern pencil, I-CCLXXIIII in contemporary red ink, contemporary foliation followed in this resource, but given in Arabic numerals for convenience) + i medieval parchment flyleaf + ii paper flyleaves, 352 x 250 mm (216 x 157 mm), two columns, 32 lines ruled in plummet (except pages including varying numbers of four-line musical staves ruled in red ink), catchwords, artists’ instructions. Fols. 10, 128 and 203 have been excised. The main text is written in iron-gall ink, the rubrics and contemporary foliation in vermilion red.