Ludwig Ritter von Köchel since undergone revisions. Mozart's works are often referred to by their K-numbers ("cf." opus number); for example, the "Jupiter" symphony, "Symphony No. 41" K. 551. Moreover, Köchel arranged Mozart's works into twenty-four categories, which were used by Breitkopf & Härtel when they published the first complete edition of Mozart's works from 1877 to 1910, a venture partly funded by Köchel. He also catalogued the works of Johann Fux. Ludwig Ritter von Köchel Ludwig Alois Friedrich Ritter von Köchel (; 14 January 1800 – 3 June 1877) was an Austrian musicologist, writer, composer, botanist and publisher. He is best known for
19th-century Catholic periodical literature 19th-century Catholic periodical literature The 19th-century Catholic periodical literature is unique in many respects. Most of the periodical publications in mainly Catholic countries can be regarded as "Catholic" literature up to a few decades before 1800: the editorial line is implicitly Catholic in most instances. The development of the press in the 19th century was in general terms a major factor in secularization according to Owen Chadwick. On the other hand, mass printing also meant that the "Pope of 1889 was far more influential that the Pope of 1839 because the later Pope was surrounded by the press and the