paragraphs are built up. This analogy was the basis for the title of various old books, "Grammar of Music"; and it suggests that there are various independent scales, so that a musician versed in one musical language is not likely to judge intelligently of another without special training. Also it should be remembered that the knowledge of the scales is only a stepping-stone to the knowledge and the life of a people.

In a letter telling of an enjoyable visit from the young Felix Mendelssohn, Goethe exclaims, "Who can understand any phenomenon if he is not thoroughly imbued with the course of its development?" This course for our subject will become clearer as with the perfected field phonograph the study of non-harmonic music enters on a new stage, and results accumulate from the many workers now busy in all parts of the world. So one looks forward to the time when ethnologist and musician, historian, psychologist and physicist, all believing in evolution, shall coöperate in finding and telling the truth about the world's music; such truth will not only advance our science, but will widen men's sympathies and set them free from some errors, and so contribute to a liberal culture.