In those inner agitations which cause muscular expansion and contraction, and find expression in the inflections and cadences of the voice, Herbert Spencer saw the foundations of music. He unhesitatingly defined it as emotional speech, the language of the feelings, whose function was to increase the sympathies and broaden the horizon of mankind. Besides frankly placing music at the head of the fine arts, he declared that those sensations of unexperienced felicity it arouses, those impressions of an unknown, ideal existence it calls forth, may be regarded as a prophecy to the fulfilment of which music is itself partly instrumental. Our strange capacity for being affected by melody and harmony cannot but imply that it is possible to realize the delights they suggest. On these suppositions might be comprehended the power and significance of music which must otherwise remain a mystery. The progress of musical culture, he thought, could not be too much applauded as a noble means of ministering to human welfare. Mr. Spencer's theory has of late led to much controversy. Its author has been censured for setting forth no explanation of the place of harmony in modern music, and for not realizing what a musical composition is. In his last volume, "Facts and Comments," which contains many valuable thoughts not previously published, he declares that his critics have obviously confounded the origin of a thing and that which originates from it. "Here we have a striking example of the way in which an hypothesis is made to appear untenable by representing it as being something which it does not profess to be," he says. "I gave an account of the origin of music, and now I am blamed because my conception of the origin of music does not include a conception of music as fully developed. If to some one who said that an oak comes from an acorn it were replied that he had manifestly never seen an oak, since an acorn contains no trace of all its complexities of form and structure, the reply would not be thought a rational one;" but he believes it would be quite as rational as to suppose he had not realized what a musical composition is because his theory of the origin of music says nothing about the characteristics of an overture or a quartet. Of the music of primeval man we can form an estimate from the music of still existing uncivilized races. As the vocabulary of their speech is limited, so the notes of their music are few, but expressive gestures and modulations of the voice supplement both. With advancing civilization the emotions of which the human heart are capable become more complex and demand larger means of expression. Some belief in the healing, helpful, uplifting power of music has always prevailed. It remains for independent, practical, modern man to present the art to the world as a thing of law and order, whose ineffable beauty and beneficence may reach the lives of the average man and woman.