[851]. Ditt. Syll. 2nd Ed., 523.
[852]. Isocr. Περὶ ἀντιδόσεως, 181-185.
[853]. Plato, Rep. 406.
[854]. Philostr. Gym. 14; Galen, De San. ii. 86, 90.
[855]. The word first occurs in Xenophon, Mem. ii. 1, 20. But the fact that it does not occur in literature earlier is no proof that it was not in use; for the cognate words γυμνάζομαι and γυμνάσιον were in use at a much earlier date.
[856]. Pindar, Ol. viii.; Nem. iv., vi.
[857]. Pindar, Nem. v.
[858]. Xenophon, Mem. l.c.; Aristotle, Pol. 1338 b.
[859]. l.c.
[860]. Plato, Protag. 313 E.