True, from dark-skinned sources have come those slave songs based on protestant hymns and biblical texts known as the spirituals, work songs and secular songs of sorrow and tough luck known as the blues, that outgrowth of ragtime known as jazz (in the development of which whites have assisted), and the charleston, an eccentric dance invented by the gamins around the public market-place in charleston, s. c. no one can or does deny this. but these are contributions of a caste in a certain section of the country. they are foreign to northern negroes, west indian negroes, and african negroes. what was schuyler's intended meaning in the statement?