TO THE QUE MOST EXCELLENT MAJESTY, AND THE BRITISH ARMY AND NAVY. J. KOHLER'S KE\Y PATENT LEVER INSTRUMENTS. ..
... gives to these Instruments are:— 1. All the Tones and Semitones produced by the Patent Lever are quite as perfect as the Natural Notes on the Instrument. 2. The intervals the Diatonic and Chromatic Scales are perfect, the compass greater, and the most rapid ...