High Quality Content by WIKIPEDIA articles! Parchment is a thin material made from calfskin, sheepskin or goatskin, often split. Its most common use was as a material for writing on, for documents, notes, or the pages of a book, codex or manuscript. It is distinct from leather in that parchment is limed but not tanned, therefore it is very reactive with changes in relative humidity and is not waterproof. The finer qualities of parchment are called vellum. According to the Roman Varro, Pliny's Natural History records (xiii.21) that parchment was invented under the patronage of Eumenes of Pergamum, as a substitute for papyrus, which was temporarily not being exported from Alexandria, its only source. Even in modern times, parchment has been called the "finest writing material ever devised". Modern products do not reach the quality of medieval manufactured parchment.

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