Diaconicon and the Prothesis, two rooms or areas adjacent to the Holy Table (altar). Work on finding the so-called "lost medieval sacristy of Henry III" at Westminster Abbey during an episode of the archaeological television programme Time Team revealed that the abbey originally had two separate sacristies. As well as a conventional sacristy for storage of ceremonial vessels such as the chalice and paten, the second, described in a 15th-century document as the "galilee of the sacristy" was determined to have been used for the robing and formation of the procession. See also Altar cloth Antependium Sacristan Savilahti Stone Sacristy Sexton Vestry References External links "Sacristy" article from the Catholic Encyclopedia Buildings and structures of the Catholic Church Church architecture Rooms