CHAPTER XVIII. In what order the Psalms are to be said
23 Feb. 24 June. 24 Oct.
Vespers are to be sung every day with four Psalms. And let these begin from the hundred and ninth, and go on to the hundred and forty-seventh, omitting those of their number that are set apart for other Hours – that is, from the hundred and seventeenth to the hundred and twenty-seventh, the hundred and thirty-third, and the hundred and forty-second. All the rest are to be said at Vespers. And as there are three Psalms wanting, let those of the aforesaid number which are somewhat long be divided, namely the hundred and thirty-eighth, the hundred and forty-third, and the hundred and forty-fourth. But let the hundred and sixteenth, as it is short, be joined to the hundred and fifteenth. The order of the Psalms at Vespers being thus disposed, let the rest, that is, the lessons, responses, hymns, verses and canticles, be said as already laid down. At Compline the same Psalms are to be repeated every day: namely the fourth, ninetieth,