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+--- Thread: Stains on Alchemical MSS: multispectral imaging (/showthread.php?tid=962)
Stains on Alchemical MSS: multispectral imaging - Paul Ferguson - 11-28-2023
Many of the most interesting manuscript stains are found in the bindings and folios of soiled, heavily-used medical and alchemical texts. Signs of this practical use may be obvious, such as burn marks from furnaces, but innocuous-looking stains (e.g. appearing to be water damage) may contain hidden information about medicinal or chemical solutions, or even heavy metal contamination, which is not evident by sight alone."
https://schoenberginstitute.org/2019/05/17/bibliophilly-and-labeculae-vivae-the-categorization-of-stains-in-alchemical-manuscripts-using-multispectral-imaging/