Parchment
Parchment is a writing material made from prepared animal skin, central to medieval manuscripts, codices, legal documents, maps, bindings, and illuminated books.
What parchment is
Parchment is a durable writing surface made from untanned animal skin. Unlike leather, it is not tanned for softness. Instead, the skin is cleaned, stretched under tension, scraped thin, dried, and finished so ink can sit on the surface. The result is strong, flexible, and often slightly translucent.
How it was made
Making parchment took skill and time. A skin was soaked, dehaired, stretched on a frame, and scraped with a curved knife while it dried. The maker adjusted thickness and smoothness by alternating scraping, wetting, and drying. A final finish could involve pumice or chalk to help the surface take ink.
Parchment and vellum
The terms parchment and vellum overlap. The U.S. National Archives uses parchment as the general term for prepared animal skin and vellum for parchment made from calfskin. Other traditions use vellum for especially fine parchment, and some conservators use broader terms because it is not always possible to identify the animal source without scientific testing.
Why it changed books
Parchment could be folded, sewn, and written on both sides, making it well suited to the codex: the ancestor of the modern book. Papyrus rolls remained important for centuries, but parchment leaves helped make page-based books practical. The material also tolerated erasure and correction better than many alternatives, which mattered in manuscript workshops.
Medieval manuscripts
Medieval European manuscripts often used parchment or vellum for religious texts, legal records, charters, music, scholarship, and luxury books. Illuminated manuscripts combined parchment with pigments, gold, silver, decorated initials, and careful scripts. Because parchment was expensive, damaged sheets might be repaired, reused, or worked around by scribes.
Strengths and limits
Parchment is tough, but not indestructible. It reacts strongly to humidity because it remains a skin-based material. Too much moisture can cause cockling, mold, and distortion; very dry conditions can make it shrink, warp, or stiffen. Preservation therefore depends on stable handling, storage, display, and climate control.
Decline and survival
Paper gradually became cheaper and easier to produce in large quantities, so it displaced parchment for many books and documents. Parchment still remained important for solemn records, luxury books, legal instruments, bindings, and special uses. Its survival in libraries and archives gives historians evidence about craft, law, religion, language, and reading.
Why it matters
Parchment matters because it shaped how knowledge was stored, copied, decorated, and preserved. It links animal husbandry, craft labor, scribal training, religious institutions, law courts, libraries, and conservation science. A parchment manuscript is not just text; it is a physical record of materials, tools, economy, and care.