=9. Books on Magic and Astrology.=--The lists of the 17th century include the titles of a number of works on magic and astrology, books which apart from this record would long since have been entirely forgotten. The _Steganographie_ of the Abbé Trithenius was included among the books so prohibited, evidently under the impression that it had to do with magic. In April, 1631, Pope Urban VIII issued a Bull against the astrologists, that is to say against those who undertook to produce calculations concerning the future of Christendom or of the Roman Curia or in regard to the life of the pope. In 1732, the Inquisition issued a prohibition of the reading of any books having to do with fortune telling, the interpretation of dreams, or the art of numbers. The books referred to under the latter designation were those that undertook to prophesy the successful numbers for lotteries. =10. Poems, Facetiae, Text-books, Periodicals, and Cyclopaedias.=--A number of works of no intrinsic importance, belonging under the class of _facetiae_ and text-books, were condemned during the 17th century on the ground of certain references, characterised as disrespectful, concerning Church matters. Certain text-books also found their way into the list because they were reproducing the texts of classic authors who were classed by the ecclesiastics as obscene or immoral. The action of the authorities in regard to literature of this kind was curiously varied and it does not seem to be possible to find for it any consistent policy or principle. The German satirical literature of this period appears to have escaped attention on the part of the examiners. The only German book of this character prohibited during the latter part of the 17th century was the _Visiones de don Quevedo, die Wunderliche Satyrische und Warhafftige Geschichte Philanders v. Sittewald_, by Moscherosch, printed in 1645 and prohibited in 1662. The next German work of this special character to find place on the Index was Heine’s _Reisebilder_, published a century and a half later. The prohibition of cyclopaedias on the ground of objection to certain entries or references, proved of special inconvenience to Catholic students and instructors. The greater publishing activity of the Protestant communities and the keener scholarship of heretical editors had caused the production of works of reference of this kind to be much more considerable and important in the territories outside of those controlled by the Church. It not infrequently happened that the condemnation of a work of this class left the scholars of the Church without the use of any equivalent work. As late even as Benedict XIV, the Congregation found occasion to add to the list of prohibited cyclopaedias.