The Quiroga Index contains no reference to that of Trent, but the Tridentine lists were largely utilised in its compilation, and the fourteen “rules” of Quiroga were evidently based upon the Ten Rules formulated in 1564. In the Spanish rules, however, the authority of the Inquisition is throughout substituted for that of bishops and theological faculties. Books prohibited in one version are to be held as prohibited in all versions, a modification repeated later by Clement VIII. There is a general prohibition of issues in the vernacular of any portions of the Scriptures. The largest schedule in Quiroga is that of works in Latin, comprising fifty-seven pages. The other lists give titles in Spanish, Portuguese, Italian, French, Flemish, and German in the order of importance specified. The lists of Valdes were in large part repeated, and those of Antwerp and Lisbon were also drawn upon. The Quiroga served in its turn as the basis for the Index of Sixtus V, the next in order from Rome. In connection with the introduction of a number of works by good Catholics, the editors have addressed the following “Note to the Reader”: “The prohibition of certain books bearing the names of writers well known throughout the Christian world as devout believers is not to be construed as a condemnation of the men themselves or as a charge that they have fallen from the true faith. In some cases heretical writings have falsely been issued under their names; in others, heretical publishers or editors have connected with the original text (in itself, orthodox) heretical notes, comments, or interpolations; and in yet others, writings addressed to scholars and suited only for scholarly understandings have been printed in the language of the common folk and circulated in such fashion as to cause mischief and error to unlearned believers, unskilled in matters of doctrine; and, finally, there are works which, while of service in the period in which they were issued and for the special purpose for which they were prepared, have fulfilled their mission and ought now to be withdrawn and cancelled.” Among the authors whose names are connected with this note are Fisher (Bishop of Rochester), More, Osorio, Luis de Granda, Cajetanus, Tapper, etc. Quiroga’s list of Italian writers includes the following entry: _Petrarca, los sonetos siguentes, Del’ empia Babylonia, Otro Fiama del ciel. Otro Fontana di dolore. Otro L’avara Babylonia._ Petrarch’s name does not appear in the Index of Paul IV or in that of Pius IV. It is to be found in that of Sixtus V, 1590, but in subsequent Roman Indexes it has been dropped. The later Spanish Indexes have perpetuated, however, this condemnation of the Florentine poet.