17. No books of indulgences, or compendiums, pamphlets, leaflets, etc., containing grants of indulgences, may be published without permission of competent authority.
CHAPTER VII. Of Liturgical Books and Prayer Books,
18. In authentic editions of the Missal, Breviary, Ritual, Ceremonial of Bishops, Roman Pontifical, and other liturgical books approved by the holy Apostolic See, no one shall presume to make any change whatsoever; otherwise such new editions are prohibited,
19. No litanies except the ancient and common litanies contained in the breviaries, missals, pontificals, and rituals, as well as the Litany of Loretto, and the Litany of the Most Holy Name of Jesus already approved by the Holy See may be published without the examination and approbation of the ordinary.
20. No one, without license of legitimate authority, may publish books or pamphlets of prayers, devotions, or of religious, moral, ascetic, or mystic doctrine and instruction, or others of like nature, even though apparently conducive to the fostering of piety among Christian people; otherwise they are lo be considered as prohibited.
CHAPTER VIII. Of Newspapers and Periodicals.
21. Newspapers and periodicals which designedly attack religion or morality are to be held as prohibited not only by the natural but also by the ecclesiastical law. Ordinaries shall take care, whenever it be necessary, that the faithful shall be warned against the danger and injury of reading of this kind.
22. No Catholics, particularly ecclesiastics, shall publish
