In an instruction given in July, 1878, by the cardinal vicar of Rome, which has to do particularly with the regulation of divine service, of the sermons, and of the schools of heretics, “whose operations are carried on under the very eyes of the Teacher of Infallible Youth,” is printed the announcement: “The typesetters who, in order to prevent themselves from losing their work, put into type the writings of heretics, come into grievous sin. This is essentially the case with those who lend themselves to the production of works maintaining or defending heretical doctrines for which works the Pope has ordered the larger excommunication.” _1806. Rome. Index Prohibitorius._ This Index, issued under Pius VII, is a reprint of the Index of 1786 with continuations of the lists up to the year of its publication. _1819. Rome. Index Prohibitorius. Index Librorum Prohibitorum, Sanctissimi Domini Nostri Pii Septimi Pontificis Maximi jussu editus._ The only article in this volume which is distinctive is the “Address to the Catholic Reader” by the editor, Alex. Angelicus Bardani, of the Order of St. Dominic and Secretary of the Congregation of the Index. This address refers, with congratulation, to the pious interest of the faithful which had exhausted the edition of the Index of 1786 (making, curiously enough, no reference to the intervening Index of 1806). The volume was reprinted in 1822 with two appendices and two decrees. The closing portion of the second decree is devoted to a denunciation of five works in English relating to papal controversies in North America, as follows: “An Address to the Congregation of St. Mary’s Church, Philadelphia.” “Continuation of an Address,” etc. “The Opinion of the Right Reverend John Rico on the Address.” “Address of the Committee.” “Address of the Right Reverend Bishop of Pennsylvania,” etc. A further edition of this Index with some revisions was printed in Paris in 1825--_Le Catalogue des Ouvrages mis à l’Index, contenant les noms de tous les Livres condamnés par la Cour de Rome, depuis l’invention de l’Imprimerie jusqu’ à 1825, avec les dates des Décrets de leur condamnation_. The lists are preceded by an _Avis de l’Éditeur_ in which an account is given of the Congregation of the Index at Rome with reference to the work of Catalani. It proceeds to say that the works comprehended in this Index are those which had been prohibited by Pius VI and Pius VII, together with all which are known to have been since censured _sous l’heureux gouvernment de l’Église Universelle par N.T.S. Père le Pape Léon XII_. It is not clear what authority this general Index may have been held to possess in France as, under various preceding utterances, the Gallican Church had taken the position that the Indexes of Rome were not to have authority in France unless reissued with the specific approval of the rulers of the French Church.