Recovery of the Missing Archimedes Palimpsest Leaf

Researchers have successfully identified a missing leaf, specifically page 123, of the Archimedes Palimpsest at the Musée des Beaux-Arts in Blois, France. This 10th-century Greek manuscript, which contains essential mathematical treatises by Archimedes of Syracuse, was historically erased and reused as parchment for other texts. The discovery, confirmed by Victor Gysembergh of CNRS and published on March 6, 2026, provides a critical opportunity to recover lost ancient mathematical knowledge. The author highlights the significance of this find in the context of historical preservation and modern scientific advancement. By utilizing advanced imaging techniques, researchers aim to bypass 20th-century additions—such as an illumination of the Prophet Daniel—that currently obscure the original ancient text. This effort reflects a broader commitment to reclaiming intellectual heritage through the intersection of archaeology and high-tech analysis. The Palimpsest, currently housed at the Walters Art Museum, has long been studied via 1906 photographs by Johan Ludvig Heiberg. The newly found leaf contains portions of 'On the Sphere and the Cylinder' (Book I, Propositions 39–41). The recovery of this page allows for a more complete reconstruction of Archimedes' work, which was previously hindered by the loss of three specific leaves during the manuscript's complex provenance history. Future research will focus on applying multispectral imaging and synchrotron X-ray fluorescence to the Blois leaf. This methodology is expected to reveal previously inaccessible text beneath the later religious illustrations. For scholars and historians, this discovery serves as a reminder that significant historical data remains hidden in plain sight, waiting for the application of modern analytical tools to be fully understood and integrated into the historical record.