improbable that there ever were any. It seems, indeed, that such a church as this must from the very first have been built for precisely the kind of worship still used in it. There was never any proper provision for a crowd of worshippers joining in any one common act of prayer or worship. The capitular body filled the Coro and sang the services of the day unnoticed by the people; whilst, as they separated to the chapels to which each was attached, the people followed them by twos and threes to the altar services in which only they wished to join. At present not more than about half the altars are commonly used; yet still each morning mass was generally being said at three, or four, or five of them at the same time, and each altar every day seemed to have a considerable group of worshippers, among whom I noticed a considerable number of men of the upper class. The high altar seems always to have had curtains on either side of it, their rods being supported on columns of jasper in front. These curtains were drawn at the _Sanctus_, and remained so until the consecration was completed. One sung mass only is celebrated at this altar each day, and an old treatise on the Customs of the Church cites in defence or explanation of this rule the words of a very early council, _una missa et unum altare_.[289] West of the Coro are two bays of nave, over the western of which rises the lower part of a rich octangular lantern. This is carried on bold piers of square outline, which, from the very simple arrangement of the shafts of which they are composed, have the grandeur of effect so characteristic of Romanesque work. The cross arches under the lantern are lower than the groining, and on the east face the spandrel between the two is filled in with rich tracery and arcading. Arches are thrown across the angles to carry the octagonal lantern, of which the lowest stage only--which is well arcaded--is built. The whole of this work is so good of its kind that it is much to be lamented it was never completed; the design of the octagonal lantern at the west, and the two more slender octagonal steeples at the Crossing, would have been as striking in its effect, doubtless, as it would have been novel in its plan, though it may be doubted whether, in so short a church, it would not have been overpowering. Above the side chapels, on each side of the nave and at the west end, another floor is carried all round. The only difference is that the rooms above the chapels are square-ended, not apsidal, and there seems to be no evidence of their having been intended for altars. I saw no piscinæ and no Retablos in them, and was tempted to imagine that the present use may, perhaps, have been the old one--that of a grand receptacle for all the machinery in fêtes, functions, and the like, of which a Spanish church generally requires no small store.[290] There are arches in the wall, affording means of communication all round