Some excerpts from Dom Gueranger’s Liturgical Year:

WE need so much penance, and we do so little! If we are truly in earnest, we shall be most fervent in doing the little that is left us to do.

The object of the Rogation days is to appease the anger of God, and avert the chastisements which the sins of the world so justly deserve; moreover, to draw down the divine blessing on the fruits of the earth. The litany of the saints is sung during the procession, which is followed by a special Mass said in the stational church, or if there be no Station appointed, in the church whence the procession first started.

The litany of the saints is one of the most efficacious of prayers. The Church makes use of it on all solemn occasions, as a means of rendering God propitious through the intercession of the whole court of heaven. They who are prevented from assisting at the procession, should recite the litany in union with holy Church: they will thus share in the graces attached to the Rogation days; they will be joining in the supplications now being made throughout the entire world; they will be proving themselves to be Catholics.

Let us pray

O God, whose property it is always to have mercy and to spare: receive our petitions: that we, and all thy servants, who are bound by the chain of sin, may, by the compassion of thy goodness, mercifully be absolved.

Hear, we beseech thee, O Lord, the prayers of thy suppliants, and pardon us our sins, who confess them to thee; that of thy bounty, thou mayst grant us pardon and peace.

Out of thy clemency, O Lord, show us thy unspeakable mercy; that so thou mayst both acquit us of our sins, and deliver us from the punishment we deserve for them. 

O God, who by sin art offended, and by penance pacified, mercifully regard the prayers of thy people, who make supplications to thee; and turn away the scourges of thy anger, which we deserve for our sins.

O almighty and eternal God, have mercy on thy servant N., our chief Bishop, and direct him, according to thy clemency, in the way of everlasting salvation; that, by thy grace, he may desire those things that are agreeable to thee, and perform them with all his strength…