The fixed scale is shown in Fig. 2, lettered C C,°D D D5 E*, &c, corresponding with the denomina-tions of the notes of a complete octave the several … equal spaces on the scale corresponding in widthwith the widths of the spaces occupied by the backparts of the keys and by the levers, L L, and beingseverally opposite to levers which act upon reeds re-presenting the notes with which the spaces of thv Asphaltum Oil.At Milwall, London, there arethe…
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