Opus number developed other catalogue-number systems; among them the "Bach-Werke-Verzeichnis" (BWV-number), and the "Köchel-Verzeichnis" (K- and KV -numbers) with which are organised the works of Johann Sebastian Bach and Wolfgang Amadeus Mozart, respectively. In the classical period, the Latin word "opus" ("work", "labour") was used to identify, list, and catalogue a work of art. By the 15th and 16th centuries, the word "opus" was used by Italian composers to denote a specific musical composition, and by German composers for collections of music. In compositional practise, numbering musical works in chronological order dates from 17th century Italy, especially Venice. In common usage, the
Catalogue of Works in Refutation of Methodism ever written, and remains the only compilation of books written from a primarily anti-Methodist perspective. An otherwise virtually unknown individual, the only evidence which suggests that the author Decanver ever existed was the publication of his "Catalogue" in 1846. He was self-evidently opposed to the doctrines of Methodism, a branch of Protestant Christianity which emerged from the teachings of John Wesley in 18th century England, and in 1846 compiled the catalogue under the full title of Catalogue of Works in Refutation of Methodism: from its Origin in 1729, to the Present Time: of Those by Methodist Authors on Lay-Representation, Methodist