Mr. Clark writes: 'The Tower, at the commencement of the present century, was an extraordinary jumble of ancient and later buildings, the towers and walls being almost completely encrusted by the small official dwellings by which the area was closely occupied. A great fire in 1841 removed the unsightly armoury of James II. and William III. on the north of the inner ward, but the authorities at the time were not ripe for a fire. The armoury was replaced by a painfully-durable Tudor barrack, and the repairs and additions were made with little reference to the character of the fortress. More recently, the general improvement in public taste has made its way even into the Tower.'[93] The Tower is still a fortress. Each night the mediæval ceremony of locking the gates takes place; after which no one can enter without the password, and this after the manner at fortresses is changed daily. The password is always communicated to the Lord Mayor, who each quarter receives a list containing the password for each day in the coming three months. Residents in the Tower can enter until twelve midnight, when the wickets are locked by the yeoman on 'watch duty' and no one is allowed to enter after that hour, unless they give the password. At a few minutes before eleven the yeoman porter takes his keys and applies to the serjeant for the 'escort for the keys.' The serjeant acquaints the officer, and the officer placing the guard under arms, furnishes a serjeant and four men. Two of the men are unarmed. Their duty is to assist in closing the gates, and to carry the ancient lantern, which contains a tallow candle. The procession is formed, and the yeoman porter with the keys places himself in the midst of the escort. He goes the round of the gates, and when he returns to the main guard, the sentry at the guard-room challenges-- 'Halt! Who comes there?' 'The keys,' replies the yeoman porter. 'Whose keys?' 'King Edward's keys.' 'Advance King Edward's keys.' The yeoman porter places himself in front of the guard. The guard present arms and the yeoman porter says, 'God preserve King Edward,' and the guard from the officer to the drummer answer, 'Amen.' The keys are then carried by the yeoman porter to the King's House, to be delivered into the charge of the officer of the Tower in command. A similar escort is called for by the yeoman porter when the gates are opened in the morning, but no ceremony takes place at that time, nor does the guard turn out. Mediævalism is in our very midst, and here, at all events, mediæval London still exists.