when his treatise on “The Origin of the Soul,” in which he supported the theory of Generationism in opposition to the Catholic doctrine of creationism, and other works were placed in the Index, asked for a revision on the ground that he taught nothing contrary to Catholic doctrine. He was stripped of all his clerical functions, and students were prohibited attending his lectures. He protested, and his rooms were more crowded than ever. Subsequently, however, repudiated even by the Old Catholics, he drifted more and more, not only from the church, but even from belief in revelation. Against Strauss’ last work he wrote a tract in which he sought to prove that “the old faith is indeed untenable,” but that also “the new science” cannot take its place, that a “new faith” must be introduced by going back to the Christianity of Christ. =Michelis=, a man of wide culture in the department of natural science and philology, as well as theology and philosophy, had in his earlier position as professor in Paderborn, Münster, and Braunsberg, supported by word and pen a strictly ecclesiastical tendency; but the Vatican Council made him one of the first and most zealous leaders of the Old Catholic movement. His most important work is his “Catholic Dogmatics,” of 1881, in which the Old Catholic conception of Christianity is represented as the purified higher unity of the Protestant and Vatican systems of doctrine. § 191.7. =The Chief Representatives of Historical Theology.=--The first place after Möhler and Döllinger belongs to Möhler’s scholar Hefele, from 1840 professor at Tübingen and from 1869 Bishop of Rottenburg, distinguished by the liberal spirit of his researches. His treatises on the Honorius controversy made him one of the most dangerous opponents of the infallibility dogma, to which, however, he at last submitted (§ 189, 4). His most important work is the “History of the Councils.” Hase criticised the second edition of the work, severely but not without sufficient grounds, by saying that in it “the bishop chokes the scholar.” =Werner= of Vienna is a prolific writer in the department of the history of theological literature; while =Bach= of Munich and the Dominican =Denifle= have written on the mediæval mystics, the latter also on the universities of the Middle Ages. =Hergenröther= of Würzburg, by his monograph on “Photius and the Greek Schism,” written in the interests of his party, and by his polemic against the anti-Vatican movement, and specially by his “Handbook of Church History,” rendered such service to the papacy and the papal church, that Leo XIII. in 1879 made him a cardinal and librarian of the Vatican, with the task of reorganizing the library.--Among the Old Catholics, =Friedrich= of Munich, besides his historical account of the Vatican Council, had written on Wessel, Huss, and the church history of Germany.