Under Covers: The Art and Science of Book Conservation
Medieval books were typically bound with wooden covers. This wooden cover and the parchment pages within have been eaten away by insects. This weakens the wood and parchment in some areas and removes original content. These pests, which commonly include silverfish and beetles, live on the starches and proteins in the wood, parchment, paper and adhesive of books. They can be very difficult to eradicate once they infest library materials.
Insect Damage on a 15th Century Manuscript. Religious Treatises: Manuscript, c.1400. Richard, of St. Victor. Special Collections Codex Manuscripts: alc
Photo by Melina Avery