1912. Prepatory notes by Sir Hubert von Herkomer and Dr. W. Brown. Contents: A Mobile Color Art; The Uses of Color-Music; Resemblances between Music and Mobile Color; The Color Scale and Mobile Color; Points of Analogy between Sound and Color; Construction of Color-Organ and Other Instruments; Effects Produced by Color-Music; The Color Sense and Its Decay; The Emotional Influences of Color; The Educational Influences of Color-Music; Mobile Color and the Artist; Some Scientific Opinions; Remarks Upon Criticisms and Appreciations of Color-Music; Some Further Remarks and Some Past Proposals; and Color-Music and Psychology.