... towards the south. Its windows are three-lighted. They terminate in the obtuse arches of their time and have their heads filled with tracery. At about half its height each is divided by a transom or horizontal mullion, beneath which the lights have cusped heads. The chapel was originally vaulted, so is well buttressed, which the aisle walls are not. The north aisle wall has its bays marked by flat pilaster-like buttresses, and the southern has still less support, for the similar ... — Bell's Cathedrals: The Cathedral Church of Rochester - A Description of its Fabric and a Brief History of the Episcopal See • G. H. Palmer