Acadine
From Wikipedia, the free encyclopedia

The Greek historian Diodorus Siculus described in Book 11.89 of his Bibliotheca historica a pool that spouted hot, sulfurous water at the sanctuary of the Palici in Sicily, and said solemn oaths were undertaken there. According to the Aristotelian On Marvellous Things Heard, a sworn statement would be written on a tablet and thrown into the pool. If true it floated, but otherwise it sank to the bottom and the perjuror would be scalded.[1] Renaissance and later authors took up this story, calling it the Acadine fountain, though this name is not attested in ancient sources.[2]