In the prefatory note to the expurgatory Index, occurs the remark, that the works of certain well-known writers which, by the editors of previous Indexes, have been considered to require expurgation, have here not been included because their errors have been so thoroughly refuted in the schools and in other books that their influence need no longer be dreaded, and there should be no present risk for thoughtful readers. The list of later Catholic writers whose works are marked for expurgation is larger than in any other Index. Attention has also been given to a number of works in the class of belles-lettres which the editors have undertaken to purge from obscenities. Finally, the Index contains a series of works on astrology, the expurgation of which has been undertaken with reference to the instructions given by Sixtus V in a Bull issued in 1585 (forty years earlier.) This is the first Index in which appears the title of the essay by King James I of England, written in defence of his requirement for an oath of fidelity. This title, which is entered under the letter A, is worded as follows: _Apologia pro juramento fidelitas, primum quidem anonymos, nunc vero ab ipso auctore serenissimo et potentissimo Principo Jacobo, etc. Lond. 1609._ The work is again condemned in the Spanish Index of 1632, where it is entered under J. Jacobus Rex. In the same year it finds place (this time also under A) in the Roman Index, the _Elenchus Capsiferrei_, from which it has been repeated into the later Indexes of Rome. The continued condemnation of this treatise is of importance as evidence of the papal doctrine (which appears never to have been revoked) of the right of the pope to depose kings. The Reverend Mr. O’Sullivan, in his testimony before the Parliamentary Committee of 1825, on the State of Ireland, deduces this doctrine from the condemnation given by the Church (in the Index) to the _Apologia_ of King James.[190] _4._ _1628._ _Rome._ _Papal Decree._ This decree contains an article entitled _Elucidarium Deiparae Auctore Joanne Baptista Poza_. Poza replies in a caustic _Apologia_ in which he charges Brasichelli with censuring the Fathers, and with an unwarranted condemnation of Emmanuel Sa. This rebellious conduct was punished by the Decree of September 9, 1632, making condemnation of all of the works of Poza. This decree is reversed in a supplement to the Spanish Decree of 1640. The obedient Catholic was therefore at liberty to read the works of Poza and of Sa within the dominions of Spain, but in so doing in other territory, he incurred excommunication. _5._ _1632._ _Rome._ _Index Prohibitorius._--_Elenchus Librorum omnium tum in Tridentino, Clementinoque Indice tum in aliis omnibus Sacrae Indicis Congreg._{nis} particularibus Decretis hactenus prohibitorum: Ordine uno Alphabetico, Per Fr. Franciscum Magdalenum Capsiferreum Secretarium digestus. Romae._ MDCXXXII. _Ex Typog. Camerae Apostolicae Superiorum permissu._