Papyrus seems to have been used for manuscripts more than any other substance both by the Greeks from the sixth century B.C. and by the Romans down to the time of the later Empire. Some very valuable Greek manuscripts on papyrus are preserved in the British Museum; among them the most important for their early date are some fragments of Homer's _Iliad_ of the third or second century B.C. Another papyrus manuscript in the same collection dating from the first century B.C. contains four _Orations_ of the Athenian Orator Hyperides, a contemporary and rival of Demosthenes. In the last few years the important discovery has been made that in certain late tombs in Egypt, dating from the Roman period, the mummied bodies are packed in their coffins with large quantities of what was considered waste paper. This packing in some cases has been found to consist of papyrus manuscripts, some of which are of great importance. In this way the newly discovered treatise by Aristotle on the _Political Constitution of Athens_, and the _Mimes_ of Herondas were saved from destruction by being used as inner wrappings for a coffin of about the year 100 A.D.[11] Other important manuscripts may yet be found, now that careful search is being made in this direction. _Herculaneum library._ Unfortunately the large library of manuscripts, consisting of nearly 1800 papyrus rolls, which was discovered about the middle of the last century in the lava-buried town of Herculaneum, has not as yet been found to contain any works of much value or interest. These rolls are all charred by the heat of the lava, which overwhelmed the town, and the work of unrolling and deciphering the brittle carbonized paper necessarily goes on very slowly. The owner of this library appears to have been an enthusiastic student of the Epicurean philosophy in its later development, and his books are mainly dull, pedantic treatises on the various sciences such as mathematics, music and the like, treated from the Epicurean point of view, or rather from that of the Graeco-Roman followers of Epicurus. _Papyrus rolls._ All these manuscripts appear to be of about the same date, not many years older, that is, than the year 79 A.D., when the eruption of Vesuvius overwhelmed Herculaneum and Pompeii in the same catastrophe. They are written in fine bold uncial characters without illumination or ornament of any kind on rolls of papyrus nine or ten inches in breadth. In their present burnt and shrunken condition the rolls average about two inches in diameter, but they were probably larger than that in their original state; see _Palaeo. Soc._ Pl. 151, 152; the other published 'facsimiles' of the Herculaneum manuscripts are not perfectly trustworthy. _Herodotus on MSS._