The chapel is octagonal at the east, but square at the west end; and pendentives of exactly the same kind of design as those of the early German and French churches are introduced across the western angles of the chapel, to bring the plan of the central vault to a complete octagon. They are true pendentives, and quite unlike those three-sided vaulting bays across the angles of the apse chapels, to which I just now referred, and which answer precisely the same purpose. They are hardly at all Gothic, having semi-circular arches, and the masonry below them being filled in with stones radiating as in a fan, from the centre of the base of the pendentive. The groining ribs (the mouldings of which interpenetrate at the springing) form by their intersection a large star of eight points in the centre, and the cells between the ribs of this star are pierced with very elaborate traceries. This is a feature often reproduced in late Spanish works, and it is one which aids largely in giving the intricate and elaborately lacelike effect aimed at by the Spanish architects at this date, to a greater extent even than by any of their contemporaries in other lands; for though this, which is wellnigh the richest example of the Spanish art of the fifteenth century, was designed by a German, we must remember that he was following, to a great extent, Spanish traditions, and was largely aided in all the better portion of the detail by national artists, among whom the greatest was, perhaps, Gil de Siloe, whose work in the monuments at Miraflores I shall presently have to describe. And it is not a little curious, and perhaps not very gratifying to the _amour propre_ of Spanish artists, that in this great church the two periods in which the most artistic vigour was shown, and the grandest architectural works undertaken, were marked, the first by the rule of a well-travelled bishop--commonly said to be an Englishman--under an English princess, and who seems to have employed an Angevine architect; and the second by the rule of another travelled bishop, who, coming home from Germany, brought with him a German architect, into whose hands all the great works in the city seem at once to have been put. I must return, however, to the description of the detail of the Constable’s chapel. Each bay of the octagonal part of the chapel below the vaulting is divided in this way: below is a recessed arch, under which is an enormous coat-of-arms set aslant on the wall, with coarse foliage round it. These arches have a very ugly fringe of shields and supporters, and finish with ogee canopies. Above are the windows, which are of flamboyant tracery of three lights; the windows being placed one over the other, the outer mouldings of the upper window going down to the sill of the lower. There are altars in recesses on the east, north, and south sides of the octagon; and the two latter stand upon their old foot-paces, formed by flights of three steps, the ends of