_Answer:_ According to a ceremonial much esteemed in Rome, published by a missionary of St. Vincent, in Bologna, 1854, l. iv. no. 1484, the priest is bound to wait. The choir _agit partem ministri_ in its answers at High Mass, and on that account the priest must wait until it responds to him, as on other occasions he waits until the server or clerk terminates his answers. After the priest has sung "Pax Domini sit semper vobiscum", he must also wait until the choir has sung "Et cum spiritu tuo", before he says "Haec commixtio", etc. 3º. When the deacon has sung "Ite Missa est", can the celebrant, without waiting for the choir to answer "Deo gratias", turn to the altar and say the prayer "Placeat"? _Answer_: The _Caeremoniale_, Ep. l. ii. c. viii. no. 78, says: "Diaconus vertit faciem ad populum, renes autem celebranti ... et cantat (Ite missa est) ... quo dicto, _ipse_ et _celebrans simul_ vertunt se per latus epistolae ad altare, et celebrans dicit (Placeat tibi, S. Trinitas, etc)". As the singing of "Deo gratias" occupies so short a time, it will terminate before the priest can turn to the altar; in any case, he ought not to commence the Placeat until the choir has responded. CORRESPONDENCE. Kilkee, February 7th, 1865. _To the Editors of the Irish Ecclesiastical Record._ GENTLEMEN, Be pleased to allow me to bring under your notice a slight mistake noticeable in the January issue of your _Record_, and in doing so I may be permitted to express my great satisfaction, and that of all those who spoke to me on the subject, with the interesting and varied matter in your _Record_. Your high character, not to speak of stronger reasons, will secure for your statements a ready acceptance with Catholics, and this, coupled with the very faultless character of your extensively read periodical, renders me anxious to have it the medium of correction to its own mistakes, however slight. The learned writer on the Irish sees of the sixteenth century, speaking of the vicissitudes of Clonmacnois, and of its subjection to the metropolitical see of Tuam, says, in p. 158 of the _Record_: "This change probably took place during the episcopate of Bishop Symon of the Order of St. Dominick, who, though omitted in the lists of Ware and De Burgo, was appointed to the see on the death of Dr. Henry in 1349". Now, Symon was never Bishop of Clonmacnois. Indeed, as remarked by the learned writer in the _Record_, Theiner gives, in page 291, the bull of his appointment. But the appointment was null, as the see was not vacant by the death of Dr. Henry. Hence, by looking to the next page of Theiner, you will see how good Pope Clement VI. acknowledges and rectifies the mistake by appointing Symon to the see of Kildare, then vacant. The report of Dr. Henry's death was unfounded; therefore, as