Elgin Cathedral and Melrose Abbey have double aisles--the former on each side of the nave, and the latter on the south side only, where the outer aisle is divided into a series of chapels. In St. Giles’, Edinburgh, a series of chapels forming a large second south aisle extends beyond the usual south aisle. The above double aisles are, however, all of later than thirteenth century date. The minor features of the first pointed style will be considered in detail in describing the various structures of the thirteenth century. Meanwhile, it may be mentioned that the doorways of this period, although not so rich in ornament as the Norman work, are still important objects in the design. The western portal of Kirkwall Cathedral is especially fine, being the only example of a design comprising triple western doorways in Scotland. The west doorway of Elgin Cathedral is very beautiful, and is, like that of Glasgow Cathedral, a double doorway with a central mullion. There are also examples of fine doorways in the smaller churches, such as Lanark, and interesting specimens in the minor doorways of the cathedral and monastic churches. The lancet form of the windows has already been referred to. We may instance the east windows of Glasgow Cathedral and the beautiful windows of Elgin and Dunblane Cathedrals as splendid examples. In the latter cathedral the interior arcade of the clerestory shows the advancing progress of the style; and at New Abbey the double and triplet forms of window are seen passing into tracery. In the clerestory of this abbey the advanced ornament of the period is observable, the simple form of the early moulded capitals being replaced by the later foliaged design. No towers of importance remain in the style of the thirteenth century, most of those attached to the churches of that style having been erected at a later date. ARCHITECTURE OF FOURTEENTH, FIFTEENTH, AND SIXTEENTH CENTURIES IN SCOTLAND.