Aid the Crusaders by their fleets, [ i. 145], [ i. 286].

[Pius II.], Pope, exhorts the Christian states to a crusade against the Turks, [iii. 172].

Convokes an assembly at Mantua, [ib.]

His negotiations with Mahomet II., [iii. 173], [iii. 174].

His zealous endeavours to resist the advance of the Turks, [iii. 174] et seq.

Engages in the crusade, [iii. 178];

and dies at Ancona, [iii. 179].

Plague in Egypt, [ ii. 187].

Plaisance, papal council at, [ i. 44].

Poictiers, count of, his capture and release, [ ii. 415], [ ii. 416].