The rubrics in this manuscript are based on those of the earliest Franciscan liturgy as edited by van Dijk in 1975, not, as indicated by Leisibach, those of the second Franciscan edition (edited by van Dijk in 1963). The manuscript was probably copied after 1260 since the first antiphon of Matins for the Office of Francis contains a wording ordered in a General Chapter of that year (statute edited in van Dijk, 1963, vol. 2, p. 420).
The differentiae of each mode have been numbered with a two-digit system: an upper-case letter indicating the final pitch of the differentia and a sequentially ordered numeral. Differentiae that vary in terms only of immediately repeated notes, presence/absence of liquescence or neumation have been given the same differentia code, but are distinguished with a lowercase letter in the first column of the “Extra” field (see the File Description). Chants not found in CAO have been assigned arbitrary numbers prefixed by “fra.”
The codes in this index for differentiae and chants not found in CAO are consistent with those used for the other Franciscan manuscripts in the database:
Assisi, Biblioteca comunale, 693
Assisi, Biblioteca comunale, 694
Assisi, Cattedrale San Rufino - Archivio e Biblioteca, 5
Budapest, Egyetemi Könyvtár (University Library), lat. 118, 119, 122, 121
Chicago, Newberry Library, 24
Città del Vaticano (Roma), Biblioteca Apostolica Vaticana, lat. 8737
München, Franziskanerkloster St. Anna - Bibliothek, 12o Cmm 1
Napoli, Biblioteca nazionale Vittorio Emanuele III, vi. E. 20
- Leisibach, Joseph. Die Liturgische Handschriften des Kantons Freiburg. Part II of Iter Helveticum, ed. Pascal Ledner. Freiburg, Schweiz: Universitätsverlag, 1977.
- Mitchell, Andrew W. “The Chant of the Earliest Franciscan Liturgy.” Ph.D. diss., The University of Western Ontario, 2003.
- van Dijk, S.J.P., ed.. The Ordinal of the Papal Court from Innocent III to Boniface VIII and Related Documents. Completed by Joan Hazelden Walker. Fribourg, Switzerland: The University Press, 1975.
- Sources of the Modern Roman Liturgy: The Ordinals of Haymo of Faversham and Related Documents (1243-1307). 2 vols. Leiden: E.J. Brill, 1963.