The narrow etymological definition of a hymn would confine it to sacred poems that, in at least some part of them, are directly addressed to some person of the Deity. St. Augustine limits the word “hymn” to “songs with praise to God—without praise they are not hymns. If they praise aught but God, they are not hymns.” Even now there are hymnologists who insist upon this limited conception. No less a writer than W. Garrett Horder, in his fresh and illuminating _The Hymn Lover_, insists that “the cardinal test of a hymn should be that it is in some one, if not the whole of its parts, addressed to God.” This shuts out the use of sacred poetry in instruction, inspiration, exhortation, and special practical applications of hymns. Moreover, if the hymn is to be limited to worship, then the unconverted can never sing sincerely in the public service, and the ancient and medieval churches were justified in withdrawing the privilege of religious song from the general laity. _Definition Must Be Based on Practical Considerations._ The hymn is simply a means to the supreme end of all religious effort. That form of the hymn, that method of its use, and that musical assistance, which realize most fully the immediate and ultimate ends in view under given circumstances can be approved and used. This practical basis of actual spiritual results must govern in formulating the conception of the Christian hymn, as well as in forms of worship and prayer, in preaching, or in church organization. Since our discussion of the hymn has in view its contributing efficiently to concrete spiritual results, its definition must have a practical basis. Etymological, scholastic, traditional, abstractly idealistic considerations can have only minor weight. _Types of Hymns._ The hymn may be viewed from too many angles to confine it to any one definition. Hence we must recognize different types of the hymn: (a) There is the poem regarding religious life and feeling that cannot be brought within the limitations of a musical setting, constituting the _Reading Hymn_; (b) we have the formless, but elevated, expression of worship or religious truth that at best can only be chanted, which we may call the Canticle, in which may be included such hymns as the Te Deum, the Sanctus, and unmetrical psalms; these, together with poems that are expressions of emotion, yet are not fitted for mass singing but may be effectively set to music of a different order, may be recognized as Solo, or Choral, Hymns, such of The Stabat Mater, The Dies Irae, and Sunset and Evening Star. There is left us the sacred poem of such a form and type that it may be called the _Congregational_ or _Singing Hymn_, which is really the subject of the present practical discussion, and may be strictly defined as follows: _Definition of the Congregational Hymn._