Another writer has drawn an interesting picture, which is based upon a conjecture which is scientifically valid, as follows: "The late Professor James once suggested as a useful exercise for young students a consideration of the changes which would be worked in our ordinary world if the various branches of our receiving instruments happened to exchange duties; if, for instance, we heard all colors, and saw all sounds. All this is less mad than it seems. Music is but an interpretation of certain vibrations undertaken by the ear; and color is but an interpretation of other vibrations undertaken by the eye. Were such an alteration of our senses to take place, the world would still be sending us the same messages, but we should be interpreting them differently. Beauty would still be ours, though speaking in another tongue. The birds' song would then strike our retina as pageant of color; we should see all the magical tones of the wind, hear as a great fugue the repeated and harmonized greens of the forest, the cadences of stormy skies. Did we realize how slight an adjustment of our own organs is needed to initiate us into such a world, we should perhaps be less contemptuous of those mystics who tell us in moments of transcendental consciousness they 'heard flowers that sounded, and saw notes that shone'; or that they have experienced rare moments of consciousness in which the senses were fused organs is needed to initiate us into such a world into a single and ineffable act of perception, in which color and sound were known as aspects of the same thing." We Sense Only Vibratory Motion. In assimilating the strange and wonderful conceptions of the psychologists above quoted, concerning the possibility of a new world of sensation arising from the possession of new channels of sense impression, we must never lose sight of the basic fact that all SENSATIONS RESULT FROM CONTACT WITH VIBRATORY MOTION. An eminent scientific authority has said regarding this: "The only way the external world affects the nervous system is by means of vibratory motion. Light is vibratory motion; Sound is vibratory motion; Heat is vibratory motion; Touch is vibratory motion; Taste and Smell are vibratory motion. The world is known to us simply by virtue of, and in relation to, the vibratory motion of its particles. Those vibratory motions are appreciated and continued by the nervous system, and by it brought at length to the mind's perception." The Higher Planes of Nature