AFTER more than ten years of constant study, during which I have had the invaluable aid of Mr. FRANCIS LA FLESCHE and the technical council and assistance of Miss SARAH ELIOT NEWMAN and Prof. JOHN COMFORT FILLMORE, I no longer hesitate to present to the public the following collection of Omaha Indian Songs, feeling confident that therein is truthfully set forth in a manner intelligible to members of my own race the Indian's mode of expressing emotion in musical forms.