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 London and other kiln-fired tiles became popular facings for buildings in the 1880's and 1890's, because they resisted soot and damp and also provided much-welcome color to buildings that were otherwise drab. Many famous buildings and landmarks of London were constructed during the 19th century including: 19th-century London This article covers the 19th century history of London, during which it grew enormously to become a global city of immense importance, and the capital of the British Empire, fed by immigrants from the colonies and refugees from conflicts and famines. It was the largest city in the world from about 1825, the