I could not resist closing this letter with these sentences, which have raised the hopes and stimulated the courage of many mourners. I only wish this imperfect sketch of the Order of Helpers of the Holy Souls, and of the nature of their work, might prove a first though feeble step towards the introduction amongst us at some future day of a Sisterhood which, in the words used on his death-bed by Father Faber, the great advocate amongst us of devotion to the Holy Souls in Purgatory, "procures such immense glory to God." THE MASS IN RELATION TO THE DEAD. O'BRIEN [1] [Footnote 1: Rev. John O'Brien, A.M., Prof. of Sacred Liturgy at Mt. St. Mary's, Emmittsburg. "History of the Mass and its Ceremonies in the Eastern and Western Churches."] The Mass of Requiem is one celebrated in behalf of the dead.... If the body of the deceased be present during its celebration, it enjoys privileges that it otherwise would not, for it cannot be celebrated unless within certain restrictions. Masses of this kind are accustomed to be said in memory of the departed faithful, _first_, when the person dies--or, as the Latin phrase has it, _dies obitus seu deposifionis_, which means any day that intervenes from the day of one's demise to his burial; _secondly_, on the third day after death, in memory of Our Divine Lord's resurrection after three days' interval; _thirdly_, on the seventh day, in memory of the mourning of the Israelites seven days for Joseph (Gen. i. 10); _fourthly_, on the thirtieth day, in memory of Moses and Aaron, whom the Israelites lamented this length of time (Numb. xx.; Deut. xxxiv.); and, finally, at the end of the year, or on the anniversary day itself (Gavant., Thesaur. Rit. 62). This custom also prevails with the Orientals. During the early days it was entirely at the discretion of every priest whether he said daily a plurality of Masses or not (Gavant., Thesaur. Rit. p. 19). It was quite usual to say two Masses, one of the occurring feast, the other for the benefit of the faithful departed. This practice, however, kept gradually falling into desuetude until the time of Pope Alexander II. (A. D. 1061-1073), when that pontiff decreed that no priest should say more than one Mass on the same day. * * * * *