In 1484, Pope Innocent VIII issued the papal bull Summis desiderantes affectibus—Desiring with supreme ardor.
(http://img.tfd.com/thumb/f/fe/Innocent_VIII.JPG)Pope Innocent VIII
Sometimes blamed for inspiring the witch-hunts that became increasingly common in the coming centuries, the bull recognizes the existence of witches, gives Dominican Inquisitor Heinrich Kramer authority to prosecute witchcraft in Germany, and urges local ecclesiastical authorities to cooperate with inquisitors. Kramer later retired and co-wrote what treatise on witchcraft?
Discuss...
Papal Bull Bestows Authority to Prosecute Witchcraft in Germany (1484) (http://encyclopedia.thefreedictionary.com/Summis+desiderantes)