Signedblind stamped on mouth piece: RUDOLPH KOENIG / À PARIS
FunctionThe organ pipes in this set all have equal volume in spite of their different shapes. They were used to demonstrate that pitch is determined by the mass and volume of air moved, not by the shape of the resonating cavity.
Primary SourcesRudolph Koenig, Catalogue des appareils d'acoustique (Paris, 1865), 20, no. 110.
Rudolf Koenig, Catalogue des appareils d'acoustique (Paris, 1889), 45-46, no. 110
John A. Zahm, Sound and Music (Chicago, 1892), 236-237.