Flagellum daemonum, se exorcismi terribiles, potentissimi, & efficaces;
Bologna, for Ioannes Rossius, 1578.
First Latin edition of this work about exorcism and demonology, originally written by Hieronymus Mengus, or Gerolamo Menghi in Italian. Mengus was the most famous Italian exorcist, and even the official exorcist of the bishop of Bologna. The book is a practical guide of how demons should be interrogated to receive information from them. Mengus writes that demons can live in a human body, that they fight with each other, and that the infidelity of the exorcists can obstruct the deliverance of the possessed. The catholic ritual of exorcism was long and complicated, made of formules, prayers, blessings with sacred water and unctions with sacred oil.