Referee's report by Alexander John Ellis, on a paper 'The theory of the division of the octave, and the practic treatment of the musical systems thus obtained. Revised version of a paper entitled 'On just intonation in music with a description of a new instrument for the easy control systems of tuning other than the equal temperament of 1 divisions in the octave' by Robert Holford Macdowall Bosanquet Agrees with Pole's observations on the paper. The author's treatment of the subject is 'highly original' and it appears to be 'the most valuable recent contribution to the testing of scientific harmony'. Subject: Engineering [Published in Philosophical Transactions, 1874]. 10 February 1875