The Guildhall of the City of London was built in the fifteenth century (when the Corporation itself was already old), and by good fortune it was only partially damaged in the Great Fire. Besides being the scene of the Lord Mayor's Banquet, the election of the Lord Mayor and Sheriffs and the Lord Mayor's Court, it contains a library, art gallery, and museum, and the famous figures of Gog and Magog; so Mr. Allen Walker will have no lack of material for his talk this afternoon.