Orchan seizes Gallipoli, [19].
Ordinances for regulating public worship, [404], [414];
Wittenberg Ordinance, [315] f., [401];
Leisnig, [401];
Magdeburg, [401].
Ordinary, the Pope's right to act as, [24].
Osiander, Andrew, [310], [353], [391].
Ottoman Turks, [19].
Pack, Otto von, [344].