Catholic writers, in return, it is added, ought to acknowledge the authority of bishops to guide, admonish and rebuke them. The anonymous paper is then severely censured, and the Pope concludes by a new and pressing appeal in favor of concord. As soon as this Encyclical of 21st March, 1853, was published, M. Louis Veuillot and his fellow-laborers addressed to Mgr. Sibour a letter expressive of respect and deference, in which they promised to avoid everything that could render them unworthy of the encouragement of their archbishop. This prelate immediately withdrew the sentence which he had issued against them, and thus was peace restored, once more, by the authority of the Supreme Pastor.
(M46) On the 12th of April, 1855, the fifth anniversary of his return from Gaeta, Pius IX. drove by the via Nomentana, the beautiful Church of St. Agnes and the Porta Pia, to a spot five miles from the city, where, on grounds belonging to the congregation of Propaganda, catacombs had been recently discovered. In these subterranean recesses were found, among other venerated tombs, that which contained the relics of St. Alexander I., Pope and Martyr, and those of the companions who shared his sufferings. The professors and students of Propaganda had assembled at the place in honor of the Pope's visit. They descended with him to the Crypt, where the Holy Father, as soon as he entered, knelt in prayer beside the remains of his sainted predecessor, who, more than seventeen centuries ago, had sealed his faith with his blood. After examining the long corridors of the catacomb, the Holy Father took his seat on the ancient throne of the chapel, which, no doubt, in the dark days of heathen persecution, several of his predecessors had filled. So placed, he delivered to the pupils of Propaganda a feeling allocution on the high career which lay before them as preachers of the true Faith. He then addressed a few words to the eminent persons who surrounded him, and proceeded back to the Church of St. Agnes. Having adored the Blessed Sacrament, and venerated the relics of the Virgin Martyr, he entered the neighboring convent of canons regular of St. John Lateran, where a suitable repast awaited the august visitor. This was followed by a conversazione in the parlor, in which the distinguished parties who had accompanied the Pope took part. Almost every Catholic country was represented there; and, among the rest, were Archbishop Cullen of Dublin (long since a Cardinal), and Bishop de Goesbriand of Burlington. The Pope was on the point of departing, when the Superiors of Propaganda prayed him to grant an audience to the students. Pius IX. graciously complied, and resumed his seat in the chair of state which was appropriately canopied. A hundred young ecclesiastics now rapidly entered the room. All of a sudden the floor gave way with a loud crash, and the whole assembly disappeared in a confused mass of furniture, stones, plaster, and a blinding cloud of dust. The joists had given way, and the whole flooring fell to a depth of nearly twenty feet. The voice of the Pope was first heard, intimating that he was safe and uninjured. As a few inmates of the convent had remained outside, assistance speedily came, and the Holy Father was promptly extricated from the ruins. Solicitous only for the safety of the company, he urgently ordered that they should all be withdrawn as rapidly as possible from their perilous position; and he waited in the garden till every one of them was rescued. Not so much as one was dangerously injured.