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ALTAR 358 ALTAR of the laity are kept. It need not necessarily be made of gold or silver, since the Roman Ritual (tit. IV, cap. i, n. 5) merely prescribes that it be made ex Holida deccntique matcrid. It may even be made of copper provided it be gilt (Cong. Sac, Rit., 31 Au- gust, 1867). If made of any material other than gold, the inside of the cup must be gilt (Cong. Episc. et Reg., 2(i Jvily, 1.588). It must not be made of ivory (ibid.) or glass (Cong. Sac. Rit., 30 January, 1880). Its base should be wide, its stem should have a knob, and it may be embellished and adorned like the chalice (vide supra). There should be a slight round elevation in the centre, at the bottom, in order to facilitate the taking out of the particles when only a few remain therein. The co-ver, which should fit tightly, may be of a pyramidal or a ball shape, and should be surmounted by a cross. The ciborium ought to be at least seven inches high. It is not consecrated, but only blessed by the bishop or priest having the requisite faculties according to the form of the "Benedictio tabernaculi" (Rit. Rom., tit. viii, xxiii). As long as the Blessed Sacrament is reserved in it, the ciborium must be covered with a veil of precious material of white colour (Rit. Rom., tit. iv, i, n. 5), which may be embroidered in gold and silver and have fringes about the edges. When it does not actually contain the Blessed Sacrament, this veil must be removed. Hence, after its purification at Mass, or when filled with new particles to be con- secrated, it is placed on the altar, the veil cannot be put on it. Even from the Consecration to the Communion it remains uncovered. Just before plac- ing it in the tabernacle after Communion the veil is placed on it. It is advisable to have two ciboria as the newly consecrated particles must ne-er be mixed with those which were consecrated before. In places in which Holy Communion is carried solemnly to the sick, a smaller ciborium of the same style is used for this purpose. The little pyx used for carrying Holy Communion to the sick is made of the same material as that of which the ciborium is made. It must be gilt on the inside, the lower part should have a slight elevation in the centre, and it is blessed by the form "Benedictio tabernaculi" (Rit. Rom., tit. viii, .xxiii). The ciborium and pyx lose their blessing in the same manner as the chalice loses its consecration. OsTENsoRiUM. — The ostensorium (ostensory, mon- strance) is a glass-framed shrine in which the Blessed Sacrament is publicly exposed. It may be of gold, silver, brass, or copper gilt (Cong. Sac. Rit., 31 August, 1867). The most appropriate form is that of the sun emitting its rays to all sides (Instructio Clement., § 5). The base should be wide, and at a short distance above it there should be a knob for greater ease in handling. The ostensorium must be sur- mounted by a (Cong. Sac. Rit., 11 September, 1847). It should not be embellished with small statues of saints, as these and the relics of saints are forbidden to be placed on the altar during solemn Benediction. At the sides of the receptacle in which the lunula is placed it is appropriate to have two statue-s representing adoring angels. In the middle of the Ostensorium there should be a receptacle of such a size that a large Host may be easily put into it; care must be taken that the Host does not touch the sides of this receptacle. On the front and back of this receptacle there should be a crystal, the one on the back opening like a door; when closed, the latter must fit tightly. The circumference of this receptacle must cither be of golil or, if of other ma- terial, it should be gilt, and so smooth and polished that any particle that may fall from the Host will be easily detected and removed. The lunula must be inserted and removed without difficulty; hence the device for keeping it in an upright position should be constructed with lliis end in view. The oetensorium need not necessarily be blessed, but it is better that it should be. The form " Benedictio tabernaculi" (Rit. Rom., tit. viii, xxiii) or t lie form "Benedictio osten.sorii" (Rit. Rom., in .ppendict; may be used. When carried to and from the altai it ought to be covered with a white veil. The lunula (lunette) is made of the same material as the ostensorium. If it be made of any material other than gold, it must be gilded (Cong. Sac. Rit., 31 .-Vugust, 1867). In form it may be either of two crescents or of two crj-stals encased in metal. If two crescents be used, the arrangement should be such that they can be separated and cleaned. Two stationary crescents, between which the Sacred Host is pressed, are, for obvious reasons, not serviceable. If two crystals are used it is necessary that they be so arranged that the Sacred Host does not in any way touch the glass (Cong. Sac. Rit., 14 January, 1898). The ostensorium, provided it contains the Blessed Sacrament, may be placed in the tabernacle, but then it should be covered witli a w'hite silk veil. (Recent authors say that since the ostensorium is intended merely ad monstrandam and not ad asser- vandam SS. Eucharistiam it should not be placed in the tabernacle.) When the Bk.ssed Sacrament is taken out of the ostensorium after Benediction it may or may not be removed from the lunula. If it is removed it should, before being placed in the tabernacle, be enclosed in a receptacle, called the repository (custodia, rcpositoriuin. capsula), which is made like the pyx, used in carrj'ing Holy Communion to the sick, but larger, and may have a base with a very short stem. If the Blessed Sacrament be allowed to remain in the crescent-shaped lunula both It and the lunula may be placed in the same kind of receptacle, or in one specially made for this purpose, having a device at the bottom for keeping the Sacred Host in an upright position. The latter may have a base and short stem, and a door, which fits tightly, on the back part, through which the lunula is inserted. This receptacle is made through- out of silver or of other material, gilt on the inside, smooth and polished, and surmounted by a cross. No corporal is placed in it. If the lunula be made of two crystals, encased in metal, it may, when containing the Blessed Sacrament, be placed in the tabernacle without enclosing it in a custodia. If the host be placed before the Consecration in the lunula made of two crj'stals, the latter must be opened before the words of Consecration are pro- nounced. The lunula and the custodia are blessed with the form "BenecL'ctio Tabernaculi" (Rit. Rom., tit. viii, xxiii) by a bishop or by a priest having the faculty. They lose their blessing when they are regilt, or when they become imfit for the use for which they are intended. All the sacred vessels, when not actually containing the Blessed Sacra- ment, should be placed in an iron safe, or other secure place, in the sacristy, .so as to be safeguarded against robbery or profanation of any kind. Each ought to be placed in its own case or covereil with a separate veil, for protection against dust and dampness. Altar-Wixe. — Wine is one of the two elements absolutely necessary for the sacrifice of the Eucha^ rist. For valid and licit consecration rinum dc vile, i. e. the pure juice of the grape naturally and properly fermented, is to be used. Wine made out of raisins, provided that from its colour and tivste it may be judged to be pure, may be used (Collect. S. C. de Prop. Fide, n. 705). It may be white or red, weak or strong, sweet or dry. Since the validity of the Holy Sacrifice, and the lawfulness of its celebration, re- qiiire absolutely genuine wine, it becomes the serious ooligation of the celebrant to procure only purs wines. And .since wines are frequently .so adulter- ated as to escape minute chemical analysis, it may be taken for granted that the safest way of procur-