the Emperor definitely to withdraw from his imperial responsibilities. His formal abdication of the Empire was not made till three years later; his relinquishment of the Netherlands only took place in 1555, and that of his Spanish kingdoms in 1556; but the end of his reign in Germany may be dated from the summer of 1554, when he empowered Ferdinand to settle the question of religion with the Diet, but not in his name.
The city which had witnessed the birth of the Lutheran Faith was also to see its legitimation, and on February 5, 1555, Ferdinand opened another great Diet at Augsburg. No Elector was present in person; of the ecclesiastical Princes only two, the Bishops of Augsburg and Eichstadt, attended, and of temporal Princes only four, the young Archduke Charles, the Dukes of Bavaria and Württemberg, and the Margrave of Baden. The Catholics still had a majority in the Diet, and it cost them a severe mental struggle to relinquish the fundamental position of Catholicism, the seamless unity of the Christian Church. But common action with Protestants in opposition to the Spanish Succession, in defence of princely privilege against Charles and of public peace against Albrecht, had paved the way, not to an agreement in religious matters, but to an agreement to differ about them. Yet even this compromise was not reached till Ferdinand had made one more effort to save ecclesiastical unity. He proposed that the Diet should first deal with the question of public peace and refer religion to a Council or to a conference. Duke Christopher of Württemberg and the Elector of Brandenburg were not averse to the idea, and the latter even suggested the Interim as the basis of an agreement. But the hand of the Diet was forced by the Lutheran Convention at Naumburg, which was attended by more German Princes than the Diet itself. Here it was determined to abide by the Confession of Augsburg, and this decision was upheld by the Elector Augustus, the sons of John Frederick, and the Landgraves of Hesse, while the Elector Joachim hastily withdrew his ill-advised suggestion with regard to the Interim.
Thereupon the Electoral College at Augsburg decided to deal with the religious question at once and demanded religious peace at any price. The Catholic Princes, led by the Cardinal Archbishop of Augsburg, protested; but Christopher of Württemberg came over to the Protestant side, and presently the Bishop of Augsburg was summoned to Conclaves at Rome, necessitated by the successive deaths of Julius III and Mar-cellus II. The Protestants now put forward their full demands. They required security not merely for all present but all future subscribers to the Confession of Augsburg, and liberty to enjoy not only such ecclesiastical property as had already been secularised but all that might be confiscated hereafter; Lutherans in Catholic States were to have complete toleration, while no such privilege was to be accorded to Catholics in Lutheran territories. They sought in fact to reduce the Catholics to
