Researcher claims to have solved mystery of 15th-century text but others are sceptical
Some say it is a medieval medical manual written in abbreviated Latin and aimed at well-to-do women. Not true, say others: it was written in Hebrew by an Italian physician and clearly shows Jewish women having ritual baths.
Nonsense, others believe: the text was written in Old Turkish, in a poetic style. Or it may have origins in Old Cornish. Or in the Aztec language of Nahuatl, or in Manchu.