In 1356 Roselli was created Cardinal of S. Sisto, and was succeeded after a short interval by Nicolas Eymerich, the most noteworthy man of whom the Aragonese Inquisition can boast, although after more than thirty years of service he ended his days in disgrace and exile. Trained in varied learning, and incessant in industry, of his numerous works but one has had the honors of print--his “Directorium Inquisitorum,” in which, for the first time, he systematized the procedure of his beloved institution, giving the principles and details which should guide the inquisitor in all his acts. The book remained an authority to the last, and formed the basis of almost all subsequent compilations. Eymerich’s conception of the model inquisitor was lofty. He must be fully acquainted with all the intricacies of doctrine, and with all the aberrations of heresy--not only those which are current among the common people, but the recondite speculations of the schools, Averrhoism and Aristotelian errors, and the beliefs of Saracen and Tartar. At a time when the Inquisition was declining and falling into contempt, he boldly insisted on its most extreme prerogatives as an imprescriptible privilege. If he assumed that the heretic had but one right--that of choosing between submission and the stake--he was in this but the conscientious exponent of his age, and his writings are instinct with the conviction that the work of the inquisitor is the salvation of souls. From Eymerich’s lament over the difficulty of providing for the expenses of an institution so necessary to the Church, it is evident that the kings of Aragon had not felt it their duty to support the Holy Office, while the bishops, he tells us, were as firm as their brethren in other lands in evading the responsibility which by right was incumbent on them. The confiscations, he adds, amounted to little or nothing, for heretics were poor folk--Waldenses, Fraticelli, and the like. In fact, so far as we can gather, the sum of Eymerich’s activity during his long career is so small that it shows how little was left of heresy by this time. Occasional Fraticelli and Waldenses and renegade Jews or Saracens were all that rewarded the inquisitor, with every now and then some harmless lunatic whose extravagance unfortunately took a religious turn, or some over-subtle speculator on the intricacies of dogmatic theology. Thus, early in his career, about 1360, Eymerich had the satisfaction of burning as a relapsed heretic a certain Nicholas of Calabria, who persisted in asserting that his teacher, Martin Gonsalvo of Cuenca, was the Son of God, who would live forever, would convert the world, and at the Day of Judgment would pray for all the dead and liberate them from hell. In 1371 he had the further gratification of silencing, by a decision of Gregory XI., a Franciscan, Pedro Bonageta. The exact relation between the physical matter of the consecrated host and the