An ostracon (Greek: όστρακον ostrakon, plural όστρακα ostraka) is a piece of pottery (or stone), usually broken off from a vase or other earthenware vessel. In archaeology, ostraca may contain scratched-in words or other forms of writing which may give clues as to the time when the piece was in use. The word is derived from Greek ostrakon, meaning a shell or a shard of pottery used as a voting ballot. It is a common error for the plural form ostraca to be used as the singular for ostracon.
In Ancient Greece, the voting public would write or scratch the name of a person in the shard of pottery. When the decision at hand was to banish or exile a certain member of society, citizen peers would cast their vote by writing the name of the person on the piece of pottery; the vote was counted and if unfavorable the person was put out of the city, thus giving rise to the term ostracism.
In Egypt, anything with a smooth surface could be used as a writing surface. Generally discarded material, ostraca were cheap, readily available and therefore frequently used for writings of an ephemeral nature such as messages, receipts, students exercises and notes: pottery shards, limestone flakes, thin fragments of other stone types, etc., but limestone sherds, being flaky and of a lighter color, were most common. Ostraca were typically small, covered with just a few words or a small picture drawn in ink; but the tomb of the craftsman Sennedjem at Deir el Medina contained an enormous ostracon inscribed with the Story of Sinuhe.
The importance of ostraca for Egyptology is immense. The combination of their physical nature and the Egyptian climate have preserved texts which in other cultures were lost, texts of a mundane nature, which are often better witnesses of everyday life than literary treatises preserved in libraries.
Emery's excavations uncovered the "Dream Ostraca", created by a scribe named Hor of Sebennytos. A convert to the god Thoth, he lived adjacent to Thoth's sanctuary at the entrance to the North Catacomb and worked as a "proto-therapist", advising and comforting clients. He transferred his divinely-inspired dreams onto ostraca. The Dream Ostraca are 65 Demotic texts written on pottery and limestone.
Additionally, the lots drawn at Masada are believed to have been ostraca, and some potsherds resembling the lots have been found.
The ostraca are of different sizes and shapes. The more extant is Luke 22:40-71, which runs over 10 pieces. The ostraca contain from 2 to 9 verses each, and cover ; Mark 5:40-41 (Mark 9:3); Mark 9:17-18, Mark 9:22; Mark 15:21; Luke 12:13-16; Luke 22:40-71; John 1:1-9; John 1:14-17; John 18:19-25; John 19:15-17. There is one ostracon with the inscription "St. Peter the evangelist," perhaps an allusion to the Gospel of Peter.
A Coptic Sa'idic ostracon preserves the Pericope Adulterae found in John 7:53-8:1, which is otherwise omitted in the Sa'idic New Testament. A Christian hymn to Mary, similar to the canticles of Luke, and some Christian letters have also been found.
The ecclesiastical ostraka, in a narrow sense, contain Biblical citations from the New Testament, prayers, extracts from the synaxaria (lives of the saints), and are partly of a liturgic character. Greek, which was then the language of the Church, is much used, with the Coptic. Among the samples published by W.E. Crum, a fine judge of Coptic dialects, there is a local confession of faith from the sixth century, besides the Preface and Sanctus of the Mass, prayers from the Liturgy of St. Basil and of St. Mark, a part of the didascalia of Schenûte of Athribis, a Greek confession, and an excommunication, also in Greek. Particularly remarkable are those ostraka which contain liturgical songs. They represent our present song-books for which purpose rolls of papyrus were less suited than the more durable potsherds; in some cases wooden books were used. Among the pieces translated by Crum we find petitions for ordination in which the petitioner promises to learn by heart one of the Gospels, and a reference to an ancient abstinence movement, against which is directed a decree that the consecration-wine should be pure or at least three-fourths pure.
