his predecessor. In consequence, out of a hundred and forty-two books known to have existed during the reign of these two Pontiffs, but thirty-five have survived. Sylvester II. is said by Petrarch to have been “Negromante, e di dottrina eccellente,” qualifications which seem rather incongruous with the duties and the traditions of the Papacy. Nor was the famous Gerbert the only Pope devoted to uncanonical and prohibited investigations of the false science of the age. John XIX. was skilled in hydromancy; John XX. was an expert in the casting of horoscopes and in divination; Benedict IX. consulted the familiar geniuses of the forests and the mountains; Gregory VII. possessed a manual of enchantment, and shook clouds of sparks from his sleeves when he pronounced the Pontifical blessing; Alexander VI. had the reputation throughout Italy of “an abominable sorcerer.” The spirit of infidelity and blasphemy which prevailed in the highest ranks of the priesthood also infected the occupants of the throne. The lives of some of the most devout sovereigns presented incredible examples of cruelty, hypocrisy, and deceit. Ecclesiastical example and the facility of absolution had apparently destroyed all reverence for the precepts of the Gospel, all apprehension of Divine wrath. The contempt often entertained by royalty for the decrees of the Almighty is disclosed by the impious speech of Alfonso X., the Most Catholic King, “If God had consulted me when He created the world, I would have given Him some good advice.”