CHAPTER XII
SOME SCIENTIFIC OPINIONS
CONSIDERING the question of the analogy between colour and musical sounds purely from the scientific standpoint, there is, broadly speaking, a general agreement amongst scientific men that there are some remarkable points of resemblance between the respective modes of being of the spectrum-band and the musical octave. In both, the sensations produced upon the eye and the ear are due to variations of frequency of pulsation in the air and the luminiferous ether respectively. But, starting from this broad general statement of fact, there are divergencies of opinion as to how far further resemblances extend, and the question has perhaps been additionally complicated lately by the wide acceptance of the electron theory. As long as we confine it to physical science the path for the investigator
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