What does adversaria mean?
The definition of adversaria
Ad`ver*sa”ri*a, n. pl.
Etym: [L. adversaria (sc. scripta), neut. pl. of adversarius.]

A miscellaneous collection of notes, remarks, or selections; a commonplace book; also, commentaries or notes. These parchments are supposed to have been St. Paul’s adversaria. Bp. Bull.