It is plain, therefore, that there is a great difference between Holy Thursday and Holy Saturday, as to the question of low Masses. With regard to Holy Thursday, the bishop may allow it in certain circumstances, but not so on Holy Saturday. This difference is evidenced in the fact, that if a holiday of obligation fall on Holy Thursday, it is to be observed, and some low Masses are permitted, so that the people may fulfil the precept of hearing Mass. But if the holiday fall on Holy Saturday or Good Friday, it is transferred to another day, together with the obligation of hearing Mass, and no private Masses are allowed. We now come to the last question, which is one of a practical character, and which must be treated as such. The Memoriale Rituum lays down most distinctly all the directions for the due performance of the ceremonies in Holy Week when there is not a sufficient number of priests to carry them on with the solemnity prescribed by the Missal. In the preface it states that it was ordered by Pope Benedict XIII., and published "ut Minorum Ecclesiarum Rectores minime vel perstrictus Parochialium Clericorum numerus detineat, vel insuetorum Rituum anfractus deterreat". Hence in the same preface it charges the parish priest to instruct three or four clerics in the ceremonies, "ut sacrae actiones, si nequeant solemniter, decenter saltem peragantur". This is the first point to be attended to, namely, to appoint three or four youths and train them in the manner of performing the ceremonies. This at first may appear to cause great inconvenience and trouble, but it is well known to those who have tried the experiment how quickly well disposed youths learn such matters, and what taste they even display in arranging the altars, etc., considering the opportunities within their reach. 2. But, as far as we know, the chief difficulty which is usually made is, that they cannot do anything in the country districts in the way of singing the hymns and the psalms. This, no doubt, would be an insurmountable difficulty in many instances; but the Memoriale Rituum of Benedict XIII. does not require music or singing. It requires the priest and the youths to recite, and to do so "aequa vocum concordia" (_vide_ Memoriale Rituum). If the parish priest could have the singing, it would, of course, be most desirable and very edifying, but not at all necessary.