Gaius Julius Solinus [3rd century CE] (De mirabilibus mundi / Polyhistor, Chapter 11.15): Carystos [in Greece] has hot springs, called the Ellopiae. It has birds called “Carystiae”, which fly through flames with impunity. It also has linen which remains strong in fire [asbestos]. - [Arwen Apps translation, 2011]

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Birds 5.27): The cariste, as Solinus says, are birds that fly into the flames with impunity, so that neither their feathers nor their flesh yield to any extent to the flames of the fires. - [Badke translation/paraphrase]