_Kathisma._ A verse during the singing of which it is permitted to sit. _Omophorion._ The bishop’s pall. _Orarion._ The deacon’s stole. _Phelonion._ A vestment or cope. _Prokimenon._ A verse, taken from the psalms, sung before the reading of an appointed epistle. With this is conjoined another verse, and the mode of saying and singing these is as follows. The reader says the prokimenon, and the choir repeats the same. Then the reader says the conjoined verse, and the choir again sings the prokimenon. Finally the reader says half the prokimenon, and the choir sings the remaining half. _Sloujébnik._ The service book containing the prayers said by the priest and deacon at Vespers, Matins, and Liturgy. _Stasis._ A subdivision of the psalter. The whole psalter is divided into twenty sections, and each of these is subdivided into three parts.[3] _Sticharion._ A tunicle. _Stichera._ Ecclesiastically composed verses, usually conjoined with verses selected from the psalms. _Theotokion._ A verse addressed to the God-bearing Virgin. _Tone._ The ecclesiastical tones are eight in number, and are based upon the ancient classical modes, namely, the Dorian, Phrygian, Lydian, and Ionian for tones i to iv, and the minors of these for tones v to viii. The Slavonic, Greek, and Gregorian tones correspond thus, _Slavonic._ _Greek._ _Gregorian._ I. I. I. II. II. III. III. III. V. IV. IV. VII. V. I minor. II. VI. II minor. IV. VII. Grave. VI. VIII. IV minor. VIII. _Trisagion._ The thrice-holy hymn, the words of which are as follow, Holy God, holy mighty one, holy immortal one, have mercy upon us, sung three times. When sung in a more solemn manner at the Liturgy and other offices before the reading of the epistle and gospel the mode is thus, Holy God, holy mighty one, holy immortal one, have mercy upon us. _Three times._ Glory to the Father, and to the Son, and to the Holy Ghost, both now and ever, and to ages of ages. Amen. Holy immortal one, have mercy upon us. (Dynamis.) Holy God, holy mighty one, holy immortal one, have mercy upon us. At Easter, Pentecost, Christmas, and Epiphany, on the day before Palm Sunday, on Holy Saturday, and at Baptisms, this hymn is superseded by the following, As many as have been baptized into Christ have put on Christ. Alleluia. _Three times._ Glory to the Father.... _ending_, to ages of ages. Amen. Have put on Christ. Alleluia. As many as have been baptized into Christ have put on Christ. Alleluia. See pages 35 and 167.