15.
[5] Among their sources of revenue we find the right of _collagium_, by payment of which clerics acquired the right to keep a concubine.

Pierre le Chantre, _Verb.

abbrev._, 24.
[6] Vide _Carmina Burana_, Breslau, 8vo, 1883; Political Songs of England, published by Th.

Wright, London, 8vo, 1893; _Poesies populaires latines du moyen age_, du Meril, Paris, 1847.

See also Raynouard, _Lexique roman_, i., 446, 451, 464, the fine poems of the troubadour Pierre Cardinal, contemporary of St.
Francis, upon the woes of the Church, and Dante, _Inferno_, xix.
If one would gain an idea of what the bishop of a small city in those days cost his flock, he has only to read the bull of February 12, 1219, _Justis petentium_, addressed by Honorius III.