It is unusually well lighted for a Romanesque church, which is naturally owing to the dome and not to the various windows or roses. There is no triforium, but the side walls, transepts, and apses are pierced by openings of true Romanesque type. The thick masonry has been most timidly pierced for narrow, round-headed slits of light, with splayed jambs and colonettes engaged to their sides carrying the typically ornamented archmolds enframing the whole. The stone mullions of the two remaining roses are equally timid and typical, but have not suffered like the windows from the encroachment of the new edifice. The pavement undulates like that of Saint Mark's. High above the crossing of nave and transepts rises the tower flooding the church with light and internally as well as externally expressing one of the grandest architectural conceptions of the Spanish Peninsula. Superlatives can alone describe the Torre del Gallo,--truly a product and glory of Spanish soil. Many writers have argued its similarity to the domes of Aquitaine churches, to Saint Front of Périgueux and others, but it is distinctly different from and far superior to those with which it has been compared in the magnificently interposed members of the drum, which shed light into the church through their openings and raise the cupola high enough to make of it a finely proportioned, crowning member. The cupola alone, certainly not the general disposition, may be regarded as a copy of earlier examples. The internal and external cores have been admirably managed, the outer one being much higher to be in correct proportion to the surrounding masonry which it crowns. The interior transition from the square to the round base, twenty-eight feet in diameter, is rather clumsily managed. The successive masonry courses of the angles step out in Byzantine fashion in front of each other. The four piers of the crossing, upon which the pendentives descend, are no larger than the main piers of the nave. Above the pendentives which stand out, in their undecorated masonry, the circle is girdled by a carved cyma, above which rises a double arcade of sixteen arches, each arch flanked by strong and simple columns with Byzantine caps of barely indicated foliage. Powerful, intermediate columnar shafts separate the superimposed arcades and carry on their caps the sixteen ribs that shoot upwards and meet in the great floral boss at the apex of the inner dome. The lower arcades are semicircular, the upper, trefoiled, while the intermediate shafts are broken by two band-courses. All the moldings, and especially the energetic, muscular ribs, are splendidly simple and vigorous in their undecorated profiles. The lower arcade is blind, the upper admits light through timidly slender apertures, with the exception of every fourth arch, which coincides with an exterior turret. [Illustration: Photo by J. Lacoste, Madrid CATHEDRAL OF SALAMANCA The Tower of the Cock]