Gianfranco Contini, collation sheet for University Library, Add. 2993
Florence, Fondazione E. Franceschini – Archivio G. Contini, S4.F192.9

In textual philology, the comparative study of variants (collatio) is one main way of establishing the genealogy of the surviving copies of a given text, in this case the Roman de la rose.

Image courtesy of Fondazione Ezio Franceschini.