Georges Kastner's (b Strasbourg 9 March 1810; d Paris 19 December 1867) Traite général d'instrumentation (1837), an important contribution to instrumentation study, is often overlooked because of its chronological proximity to Berlioz's Grand traité d'instrumentation (1843). Kastner's complete and concise treatise discusses the standard orchestral instruments and several obscure and ancient instruments. Intended principally for young composers, it provides the most detailed descriptions of the standard wind instruments of his day and discusses recent developments like the ophicleide and valved brass instruments. After the publication of the Traité, Kastner released a supplement including Aldophe Sax's newest innovations, entitled Cours d'instrumentation, which included musical examples of principals discussed in the Traité. Both the Traité and the Cours were accepted by the Academy and adopted by the Paris Conservatoire.