Above this parapeted gallery is a large window lighting the upper part of the nave, a window which for extravagance and exuberance of tracery exceeds all others here or elsewhere. The lower part is evidently founded on the larger windows of the Capella do Fundador. Like them it has two larger pointed lights under a big ogee which reaches to the apex of a pointed arch spanning the whole window, the space between this ogee and the enclosing arch being filled in with more or less ordinary flowing tracery. These two main lights are again much subdivided: at the top is a circle with spiral tracery; below it an arch enclosing an ogee exactly similar to the larger one above, springing from two sub-lights which are again subdivided in exactly the same manner, into circle, sub-arch, ogee and two small lights, so that the whole lower part of the window is really built up from the one motive repeated three times. The space between the large arch and the window head is taken up by a large circle completely filled with minute spiral tracery and two vesicae also filled in with smaller vesicae and circles. Now such a window could not have been designed in England, in France, or anywhere else; not only is it ill arranged, but it is entirely covered from top to bottom with tracery, which shows that an attempt was being made to adapt forms suitable in a northern climate to the brilliant summer sun of Portugal, a sun which a native builder would rather try to keep out than to let in. Above the window is a band of reticulated tracery like that below, and the front is finished with a straight line of parapet pierced and foliated like that below, joining the picturesque clusters of corner pinnacles. The only other part of the church which calls for notice is the bell-tower which stands at the north end of a very thick wall separating the sacristy from the cloister; it is now an octagon springing strangely from the square below, with a rich parapet, inside which stands a tall spire; this spire, which has a sort of coronet rather more than half-way up, consists of eight massive crocketed ribs ending in a huge finial, and with the space between filled in with very fine pierced work.[79] From such of the original detail which has [Illustration: FIG. 33. BATALHA. WEST FRONT OF CHURCH. _From a photograph by E. Biel & Co., Oporto._]