It is with the Leonine Indexes, as with all those that preceded, difficult to arrive at the principle that has guided this selection. The lists include no works of the heresiarchs, and in fact no titles back of the 17th century. Place has been found, however, for reprinting a number of the prohibitions of the early 17th century, as well as for those of the 18th. The Leonine decrees confirm those of the Indexes of Pius IV (Trent), 1564, of Clement VIII, 1596, and of Benedict XIV, 1758, and the lists in these cover, of course, all the important heretical literature from the earliest date of printing. It is not clear on what principle have been selected the works of the 17th century which in the judgment of the Leonine editors were important enough to warrant a reiteration, three centuries later, of the original condemnation. Still more difficult for these editors must have been the selection from the great mass of fiction and of current literature of the past century, and more particularly of the last half of the 19th century, of works that impressed them as sufficiently pernicious in character and abiding in their influence to call for specific condemnation. The result of this selection impresses the student as curiously disproportionate, and in fact as almost haphazard in its character. The fiction which has been condemned is for the most part classed under the description of _fabulae amatoriae_. I have noted the titles of certain works which seem to be in one way or another typical or which would be likely to prove of interest to the English-speaking readers of to-day.[157] It is doubtless the case that the Italian literature (which constitutes the very large proportion of the lists) possesses for the purposes of the indexer a distinctive importance of its own, but these books are, I judge, less likely to be familiar to the readers who will be reached by my treatise. The dates placed against the titles are those, not of publication, but of the decrees, these decrees being in some cases as far as a century later than the date of the original issue. _Abrégé de l’histoire ecclésiastique de Fleury._ Decr. 1769. ACTON, LORD. _Zur Geschichte des vaticanischen Conciles; Sendschreiben an einen deutschen Bischof._ 1871. ADDISON, JOS. _Remarks on Italy._ 1729. ALBERTUS MAGNUS. _De Secretis Mulierum._ 1604. _Alciphron_, by Berkeley. 1742. _Anglica, Normanica_, etc., _a veteribus scripta_, etc. _d.c._ By Walsingham, etc., edit. Camden. 1605. These chronicles are, it is to be noted, to be permitted when corrected; but for such corrections they have already waited for centuries. _Apologie de Jansénius, évesque_, etc. 1654. There are no less than sixteen entries under the term “Apology.” ARNAULD ANTOINE (_fils_). Seventeen works are entered under the name of this Jansenist writer. The decrees are of date 1656–1659. _Arrest de la cour de Parlement._