O. (O. O.) on Catherine Barton, 144.
—— York mint, 133.
Optical phenomenon, 155.
—— query, 430. 560.
Oratories, places of worship, 261.
Ord (J. P.) on General Monk, 486.
Orielensis on burrow, 321.
Orkneys in pawn, 105. 183. 412.
Ormon (John) on passage in Orosius, 606.
Ornament, an old silver armorial, 96.