Architecture, progress of, during the crusades, [iii. 330-332].

Arculphus, St., pilgrimage of, [ i. 7].

Argun, the Tartar chief, [iii. 94], [iii. 95].

Aristocracy, on the origin of, [iii. 280] et seq.

Aristotle, philosophy of, introduced into Europe, [iii. 338].

Armenians, slaughter of the, [ ii. 169].

Arms of the Crusaders, [ i. 99].

Arnold, a priest, elected pastor of the Church of Jerusalem, [ i. 236].

—— a Flemish preacher, his account of the siege of Lisbon noticed, [ i. 375] n.

—— de Rohés, chaplain to the duke of Normandy, [ i. 191].