small chamber of irregular plan at the first-floor level, and is placed over the entrance passage. It has a large east window, altered at two periods, and two smaller lateral windows, all now closed up. The roof was of timber, and is gone. This oratory had a special endowment, afterwards shifted and expanded in favour of the large chapel in the lower ward. The details of this appendage show that, as at York and Cardiff, it was an addition to the original shell, the ashlar face of which is seen within one of the lower chambers. At Cardiff the added tower was Perpendicular; at York, where it included a small chapel, Early English. Here the addition seems Early Decorated. The chapel is probably the St. Martin’s mentioned in Domesday, and in the Patent Rolls of 1275, and was, of course, dismantled when the endowment was shifted in 1375. The keep is mentioned at different periods as Beaumont, Hautmont, and Grosmont, all names preserving its chief characteristic. As the English “Aula” was probably on this mound, while the ashlar exterior of its present wall is unquestionably later than the Conquest, it has been supposed that the heart of the wall is original, and that it was cased by the Norman architect. Of such casing there is, however, no appearance. The entrance from the curtain seems to have been cut through the wall, which has been thought there to show traces of early masonry. The wall, however, appears all of one date, and that probably late Norman, as is usual with shell keeps. _Bevis Tower_ stands upon the curtain and projects from its outer face only. It stands on the north counterscarp of the ditch of the mound, about 42 yards from the keep. It is square, and said to be, in substance, of the age of the gatehouse, but it is not allowed to be seen close. It is called a barbican, but its position scarcely justifies its having been so intended. It looks more like an ordinary mural tower. There is no communication from the keep with the curtain on this side. North of this tower the earthworks of the upper ward seem tolerably perfect, but a request to be allowed to visit them was evidently regarded as a sort of treason.