Diodorus Siculus, 1. v. p. 340, Edit. Wessel. Herodian, 1. vi. p. 221. Jornandes, c. 55. On the banks of the Danube, the wine, when brought to table, was frequently frozen into great lumps, 'frusta vini'. Ovid. Epist. ex Ponto, 1. iv. 7, 9, 10. Virgil. Georgic. l. iii. 355. The fact is confirmed by a soldier and a philosopher, who had experienced the intense cold of Thrace. Xenophon, Anabasis, l. vii. p. 560. Edit. Hutchinson.