TY - JOUR T1 - On Musical Duodenes, or the Theory of Constructing Instruments with Fixed Tones in Just or Practically Just Intonation JF - Proceedings of the Royal Society of London (1854-1905) VL - 23 SP - 3 EP - 31 PY - 1874/01/01/ UR - http://dx.doi.org/10.1098/rspl.1874.0004 M3 - doi:10.1098/rspl.1874.0004 AU - Ellis, A. ER -