Note 21 — PROMETHEUS CHAINED.
Theodore Alois Buckley translation
Nominativus Pendens. Soph, Antig. 259, λόγοι δ᾽ ἐν ἀλλήλοισιν ἐρρόθουν κακοί, φύλαξ ἐλέγχων φύλακα, where see Wunder, and Elmsley on Eur. Heracl. 40. But it is probably only the σχῆμα καθ᾽ ὅλον καὶ μέρος, on which see Jelf, Gk. Gr. § 478, and the same thing takes place with the accusative, as in Antig. 21, sq. 561. See Erfurdt on 21.