Waxed tablets.When the written matter on these tablets was no longer wanted, a fresh surface for writing was prepared either by smoothing down the wax with the handle of the stilus, or else by scraping it off and pouring in a fresh supply. This is mentioned by Ovid (Ar. Am. I. 437); "cera ... rasis infusa tabellis[[6]]." These tablets were sometimes called briefly cerae; the phrases prima cera, altera cera, meaning the first page, the second page. The best sorts of wooden writing-tablets were made of box-wood, and hence they are sometimes called πυξίον. In addition to the holes along one edge of each tablet through which the cord or wire was passed to hold the leaves together and to form the hinge, additional holes were often made along the opposite edge in order that the letter or other writing on the tabulae might be kept private by tying a thread through these holes and then impressing a seal on the knot. Plautus (Bacch. IV. iv. 64) alludes to this in mentioning the various things required to write a letter,

Effer cito stilum, ceram, et tabellas et linum.

In some cases wooden tablets of this kind were used without a coating of wax, but had simply a smooth surface to receive writing with ink and a reed pen. Many examples of these have been found in Egypt. The writing could be obliterated and a new surface prepared by sponging and rubbing with pumice-stone.

Whitened boards.

Whitened boards.Among the Greeks wooden boards, whitened with chalk or gypsum, were often used for writing that was intended to be of temporary use only. Charcoal was used to write on these boards, which were called λευκώματα or γραμματεῖα λελευκωμένα[[7]]. Public advertisements and official announcements were frequently written in this way and then hung up in a conspicuous place in the agora or market-place of the city.

Sacred accounts.

Sacred accounts.Thus some of the inscriptions of the fourth century B.C., found at Delos mention that every month a λεύκωμα was suspended in the agora, on which was written a statement of the financial management and all the expenses of the Temple of the Delian Apollo during the past month. Finally, at the end of the year, an abstract of the accounts of the Temple was engraved as a permanent record on a marble stele. This was also the custom with regard to the financial records of the Athenian Parthenon, and probably most of the important Greek temples. In connection with the sacred records, the Delian inscriptions mention, in addition to the λευκώματα, other forms of tablets, the δέλτος and the πίναξ, and also χάρται or writings on papyrus; manuscripts of this last kind will be discussed in a subsequent section[[8]].

Late survivals.

Late survivals.Late survivals of writing on tablets. Before passing on to describe other forms of classical manuscripts, it may be interesting to note that the ancient waxed tablets or pugillares continued to be used for certain purposes throughout the whole mediaeval period, down to the sixteenth century or even later. Many of the principal churches, especially in Italy, but also in other countries, possessed one or more diptychs on which were inscribed the names of all those who had in any way been benefactors either to the ecclesiastical foundation or to the building. In early times, during the daily celebration of Mass, the list of names was read out from the diptych by the Deacon standing in the gospel ambon; and the congregation was requested or "bid" to pray for the souls of those whose names they had just heard.

"Bidding the beads."