Orpheus, κατάβασις εἰς Ἅιδου, [vii, 3], [27]; [x, 60]; of Kamarina, [x, 7]; of Kroton, [x, 7], [11].
[Orphics], [v, 99]; [124]; [vi, 13]; [vii, 15], [18]; [335] f.; [xii, 137]; [xiii, 44]; [70a]; [586]; alleged influence in Homer, [x, 5].
Orphic cult of Bakchos, [x, 1]; poetry, authorship of, [x, 7]; Rhapsodical Theogony, [ix, 123]; [339]–40; [596] f.; other Theogonies, [x, 21]; origin of mankind in, [339] f.; [x, 77]; six Rulers of the world, [x, 40]; Asceticism, [342] f.; kathartic doctrine, [338]; ideas of Hades, [344] f.; doctrine of rebirth and Transmigration of souls, [345] f.; grave-tablets (Sicily), [417] f.; [xiv, ii, 151]; [598], [601]; Hymns, [xiv, ii, 173].
Orphica (fr. 120). [x, 22]; (fr. 226), [x, 48].
Orphico-Pythagorean Hymnus on Number, [x, 9].
Ὀρτυγίη, [ii, 25].
Os resectum of the Romans, [i, 34].
ὅσιοι, the Pure, [vi, 18]; [343].
Osiris, [xiv, ii, 152].
Ostiaks, religious dances of the, [viii, 55].