“They were tearing down the street at a great rate, when Whistler suddenly stopped the cab and made the driver go back to a certain spot,--and they had to go backwards and forwards for quite a while before they found the exact place,--in order to get a view of a certain little green-grocer’s shop, with his fruit and vegetables outside, striped awnings, etc. “Whistler put up his hands for a frame, squinted and twisted. ‘Beautiful!’ he exclaimed. ‘Lovely! I’m going to do that; but I think I’ll have him move the oranges over to the right more, and that green, now--let me see----’ “‘Whistler!’ cried his friend, ‘_do_ come along! That man will be home in New York before we get there!’ “‘What a nuisance you are!’ declared Whistler, and was sulky the rest of the way. “It was not a pose. The painter was so enchanted by what he saw that banker and money were nothing to him at that moment.” And it is said a visitor once found him at work in his studio. “The furniture was of a pale gray; the hangings were of the same color; the window shades were of gray; the model a woman with gray eyes, wearing a gray costume; and the costume of the painter was also of the same prevailing color. “Whistler refused to talk with his visitor until he had removed his flaming red cravat; and, after a few minutes’ conversation, commented upon the fact that the tone values of his coat and trousers were out of harmony.” An exaggeration, but it all might have occurred; for has he not himself described, in “Gentle Art,” how the loud dress of a critic destroyed his exhibition. “To have seen him, O, my wise Atlas, was my privilege and my misery,--for he stood under one of my own ‘harmonies,’ already with difficulty gasping its gentle breath, himself an amazing ‘arrangement’ in strong mustard-and-cress, with bird’s-eye belcher of Reckitt’s blue, and then and there destroyed absolutely, unintentionally, and once for all, my year’s work!” * * * * * The analogy between the musical scale and the color scale has been many times noted. Helmholtz[37] draws the following analogy: F ♯ End of the red. G Red. G ♯ Red. A Red. A ♯ Orange-red. B Orange. c Yellow. c ♯ Green. d Greenish-blue. d ♯ Cyanogen-blue. e Indigo-blue. f Violet. f ♯ Violet. g Ultra-violet. g ♯ Ultra-violet. a Ultra-violet. a ♯ Ultra-violet. b End of the solar spectrum. There is, of course, this fundamental difference between the two senses: the action of air-waves upon the ear is mechanical, simply a succession of beats, while the action of ether-waves upon the retina is chemical in its character.