Contents Include With an Account of the Theory of Sound Also of the Music and Musical Instruments of the Ancients. Sound-Noise-music On the Transverse Vibrations of Tuning Forks-Rods Plates Bells The Vibrations of Strings The History of Music Stringed Musical Insrtuments of the Ancients The First Instruments with the Pianoforte Keyboard the Clavicytherium Clavichord Virginal Spinet Harpsichord, etc The Invention of Progress of the Pianoforte Progress of the Pianoforte from its Introduction into England Invention and Progress of the Upright Pianoforte Useful Hints Upon Selecting and Practical Directions for Tuning Pianos and Small Defects