Codex H’s Lost Pages Reappear Through Multispectral Imaging
A manuscript long thought to have surrendered its secrets has yielded a substantial new trove of evidence. Researchers at the University of Glasgow have recovered 42 previously lost pages from Codex H, a 6th-century manuscript containing a copy of the Letters of St. Paul, using multispectral imaging and radiocarbon dating.
The recovery depended on a subtle material history. At some point, the manuscript was re-inked, and chemicals from the later ink transferred onto neighboring leaves. Under multispectral imaging, those traces appeared as “ghost impressions,” allowing the team to reconstruct text that is nearly invisible to the naked eye. In effect, the method made it possible to retrieve multiple pages of information from each surviving sheet.
The project was led by Garrick Allen, a professor of divinity and biblical criticism at the University of Glasgow, in partnership with the Early Manuscripts Electronic Library. Researchers also worked with specialists in Paris to confirm the parchment’s 6th-century origin through radiocarbon dating.
What emerged is not simply a duplicate of a familiar biblical text. The recovered pages show a different arrangement from modern editions and include the earliest known use of the Euthalian apparatus, a system of prologues, chapter lists, and quotation markers designed to help readers navigate scripture before page numbers and indexes existed. The manuscript also preserves corrections and annotations that reveal how monks engaged with the text over time, revising it rather than treating it as fixed.
Codex H’s later life is equally telling. Between the 10th and 13th centuries, monks at the Great Lavra Monastery on Mount Athos broke the manuscript apart and reused its parchment as binding material. Today, its surviving folios are dispersed across libraries in Italy, Greece, Russia, Ukraine, and France. What 19th-century collectors once condemned as destructive reuse has, in some cases, preserved fragments that would otherwise have vanished entirely.
Allen called Codex H “such an important witness to our understanding of Christian scripture,” adding that discovering “any new evidence, let alone this quantity, of what it originally looked like is nothing short of monumental.” The find underscores how digital imaging and conservation science are reshaping the study of early manuscripts, turning damaged remnants into sources of new historical knowledge.
