Missions to the Catholic people have been in use for centuries in various parts of Europe. They are generally given by the members of religious congregations specially devoted to the work. The missionaries are invited by the pastor of the parish, with the sanction of the bishop of the diocese from whom they receive their jurisdiction. {117} The exercises of the mission consist of a regular series of sermons and instructions, continued for a number of days, and sometimes for two weeks in succession, twice or oftener in the day. The course of instructions, which is given at an early hour of the morning, embraces familiar and plain but solid and didactic expositions of the commandments, sacraments, and practical Christian and moral duties. The course of sermons, given at night, includes the great truths which relate to the eternal destiny of man, which are presented in the most thorough and exhaustive manner possible, and enforced with all the power with which the preacher is endowed. Several of Father Baker's mission sermons are included in the collection published in this volume, and will serve to exhibit their peculiar style and character. Frequently, the older children receive separate instruction for about four days in succession, closing with a general confession and communion. After the mission has continued a few days, the confessionals are opened to the people, and communion is given every morning to those who are prepared to receive. At the close of the mission the altar is decorated with flowers and lights, a baptismal font is erected, the people renew their baptismal vows after an appropriate sermon has been preached, and are dismissed with a parting benediction. The sacrifice of the Mass is offered up several times every morning, according to the number of priests present; and before the evening sermon there is a short prefatory exercise, which, in the Paulist Missions, consists of the explanation of an article of the Creed, followed by the Litany of the Saints. After sermon, the _Miserere_ or some other appropriate piece is sung, and the benediction of the Blessed Sacrament is given.