At Prime let three Psalms be said, separately and not under one “Glory be to the Father.” The hymn of that Hour is to follow the verse “Incline unto my aid, O God,” before the Psalms begin. Upon completion of the three Psalms let one lesson be recited, then a verse, the “Lord, have mercy on us” and the concluding prayers. The Offices of Terce, Sext and None are to be celebrated in the same order, that is: the “Incline unto my aid, O God,” the hymn proper to each Hour, three Psalms, lesson and verse, “Lord, have mercy on us” and concluding prayers. If the community is a large one, let the Psalms be sung with antiphons; but if small, let them be sung straight through. Let the Psalms of the Vesper Office be limited to four, with antiphons. After these Psalms the lesson is to be recited, then the responsory, the Ambrosian hymn, the verse, the canticle from the Gospel book, the litany, the Lord’s Prayer and the concluding prayers. Let Compline be limited to the saying of three Psalms, which are to be said straight through without antiphon, and after them the hymn of that Hour, one lesson, a verse, the “Lord, have mercy on us,” the blessing and the concluding prayers. CHAPTER 18 In What Order the Psalms Are to Be Said Feb. 21—June 22—Oct. 22 Let this verse be said: “Incline unto my aid, O God; O Lord, make haste to help me,” and the “Glory be to the Father”; then the hymn proper to each Hour. Then at Prime on Sunday four sections of Psalm 118 are to be said; and at each of the remaining Hours, that is Terce, Sext and None, three sections of the same Psalm 118. At Prime on Monday let three Psalms be said, namely Psalms 1, 2 and 6. And so each day at Prime until Sunday let three Psalms be said in numerical order, to Psalm 19, but with Psalms 9 and 17 each divided into two parts. Thus it comes about that the Night Office on Sunday always begins with Psalm 20. Feb. 22—June 23—Oct. 23 At Terce, Sext and None on Monday let the nine remaining sections of Psalm 118 be said, three at each of these Hours. Psalm 118 having been completed, therefore, on two days, Sunday and Monday, let the nine Psalms from Psalm 119 to Psalm 127 be said at Terce, Sext and None, three at each Hour, beginning with Tuesday. And let these same Psalms be repeated every day until Sunday at the same Hours, while the arrangement of hymns, lessons and verses is kept the same on all days; and thus Prime on Sunday will always begin with Psalm 118. Feb. 23—June 24—Oct. 24