Nothing to do with Irish really but posting in here for reference to those interested in ancient manuscripts.
10th C AD Greek text in a 13thC AD palimpsest (recycled book - in this case by a scribe for use as a prayer book), containing codex C of the works of Archimedes (3rd C BC)
http://www.latimes.com/news/nationworld ... nes-nation
fascinating stuff! [I wonder how they're getting on with the 8th C book-in-a-bog found last year in Ireland?]