The Great Cristal Bell o Triple vibrating-plate apparatus Cagnard de la Tour whistle Recording cylinder Lissajous and Desains apparatusfor optical and graphycal experiments on sound Two C3 pitch diapasons with armonic resonator Two pipes for the Tartini sound Seven pipes for the third scale Open flute with taps Two singing flame pipes Manometer capsule and gas burner for the manometer flame Open tube with crystal and three manometric flames Herschel apparatus for acoustic interference