paper
Paper, i (late 16th- or early 17th-century) + 90 + i (late 16th- or early 17th-century); 1-9¹⁰; [1-90], modern foliation in pencil, lower right recto. Vertical catchwords on last verso of each gathering, lower right verso.
Late 16th or early 17th-century parchment; leather spine label, Tract[atus] de comp[osito] et divis[o]; arms of Pope Gregory XIII and Jesuit monogram stamped on spine in black ink.
Written in the abbey of the Hermits of Saint Augustine in Perugia in 1475 (f. 87r).