Page:The Roman index of forbidden books.djvu/64

56 d. Books, pamphlets and leaflets, which give catalogues of indulgences or new grants of them; also all writings which treat of subjects that are evidently of unusual importance for faith or morals at the time being.

Without ecclesiastical approbation the publications mentioned under b and c as well as all Bible editions in the vernacular are forbidden, though they may have been issued by most pious and learned men. The failure to obtain the approbation for the rest that fall under rule 10 would be a sin for the author (and publisher), but the works themselves would not be forbidden, provided they are not, on account of their contents, proscribed by other rules.

An author who is a member of a religious order must add the permission of his "praelatus" to the approbation of the bishop.

Note 1. Although all the members of a Catholic family should endeavor to keep forbidden books out of the home, the head of the household