Note 79 — Chapter IV · THE PROGRESS OF ATTACK AND DEFENCE
Reading edition
See the account of the sieges of Boves and Château-Gaillard by Guillaume le Breton, Philippis, books ii. and vii. At the siege of Zara in the fourth Crusade, after five days of fruitless stone-throwing, the Crusaders began to undermine a tower which led to the surrender of the city (Villehardouin).