Ristoro, Brunetto, Bencivenni e la «Metaura»: intrecci di glosse e rinvii tra le opere di uno scaffale scientifico

The spreading of the secular culture in the thirteenth century produced an increased popular encyclopedism, which makes it open to the vernacular, usually characterized by a process of accumulation of auctores, visible, both in Latin and vernacular, by the overlapping of glosses and interpolations along the transmission of texts. The essay finds out for the first time the sources of some glosses and identifies, through a network of glosses developed in the manuscript tradition of some texts, the existence of a widespread and well-known scientific library in the vernacular language.