up—but arousing other interests, developing other faculties, and opening up other possibilities.
The disinclination of some to allow that colour should be put into partnership with music has already been referred to; but there are others, again, who seem to feel that the chief emotional use for mobile colour will be in illustration and emphasis of musical compositions. It has nevertheless been asserted by one writer that, though this association of the two arts seems desirable, "the eye can grasp but an octave of colour, while the more delicate and complex ear possesses some ten thousand fibres, each vibrating in sympathy with the musical note. The pitch and intensity of a sound may be arbitrarily represented in colour, but what about the qualities of tone? This third attribute of a note or chord finds something wanting in the sister science."
In reply to this, it may be said again that, as a matter of fact, the number of tints appreciable by the eye exceeds by hundreds of thousands, perhaps millions, the number of
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