Köchel catalogue son's earlier works; Mozart's catalogue of his own compositions (begun in February 1784 with K. 449) allows relatively precise dating of many of his later works. The catalogue included the opening bars of each piece, known as an incipit. Köchel divided the corpus into a main chronology of 626 works, and five appendices ("" in German, abbreviated to "Anh.") The appendices (Anh. I-V) included: Since Köchel published his original catalogue in 1863 (now referred to as K), the dating of Mozart's compositions has been subject to constant revision. Many more pieces have since been found, re-dated, re-attributed and re-numbered, requiring
Christianity in the 19th century thoroughly protean. The word "liberal" in liberal Christianity does not refer to a leftist political agenda but rather to insights developed during the Age of Enlightenment. Generally speaking, Enlightenment-era liberalism held that people are political creatures and that liberty of thought and expression should be their highest value. The development of liberal Christianity owes a lot to the works of theologian Friedrich Schleiermacher. As a whole, liberal Christianity is a product of a continuing philosophical dialogue. Historian Kenneth Scott Latourette argues that the outlook for Protestantism at the start of the 19th century was discouraging. It was a regional religion