Piscina

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For the Italian commune, see Piscina (TO).

A piscina (also known as a sacrarium) is a Latin word first applied to a fish-pond, and later used for any pool of water for bathing, either natural or artificial, and also for a tank or reservoir. In ecclesiastical usage the term was given to a shallow stone basin, the French cuvette, placed near the altar in a church, with drains to take away the water used in the ablutions at the mass. Piscinae seem at first to have been mere cups or small basins, supported on perforated stems, placed close to the wall, and afterwards to have been recessed therein and covered with niche heads, which often contained shelves to serve as ambries. They are rare in England until the 13th century, after which there is scarcely an altar without one. They frequently take the form of a double niche, with a shaft between the arched heads, which are often filled with elaborate tracing.

A piscina is a special basin that is connected by a pipe directly to the ground. Sacrariums are found inside Roman Catholic and Anglican church buildings. The purpose of the Sacrarium is to dispose of water used sacramentally, and particles of the consecrated Eucharist by returning these particles directly to the earth from which it came.

Ordinarily the Sacrarium is used in cleaning the vessels used during the course of the Mass. Cleaning the vessels in this basin ensures that any remaining consecrated particles are returned directly to the Earth. However if consecrated hosts become unusable, the priest is to dispose of the hosts by placing them in the Sacrarium. This is accomplished by breaking the hosts up into small pieces and washing them into the basin - which returns the consecrated hosts to the ground.

At times the Sacrarium has been used for disposal of other items, such as old baptismal water, holy oils, and leftover ashes. In the past, consecrated wine was also poured down the Sacrarium. However in modern church practice such wine that is left over after communion is consumed either by the priest, or by those who assist in the distribution of the Eucharist.