XXV. But the declining and morbid taste of the later architects, was not satisfied with thus much deception. They were delighted with the subtle charm they had created, and thought only of increasing its power. The next step was to consider and represent the tracery, as not only ductile, but penetrable; and when two mouldings met each other, to manage their intersection, so that one should appear to pass through the other, retaining its independence; or when two ran parallel to each other, to represent the one as partly contained within the other, and partly apparent above it. This form of falsity was that which crushed the art. The flexible traceries were often beautiful, though they were ignoble; but the penetrated traceries, rendered, as they finally were, merely the means of exhibiting the dexterity of the stone-cutter, annihilated both the beauty and dignity of the Gothic types. A system so momentous in its consequences deserves some detailed examination. XXVI. In the drawing of the shafts of the door at Lisieux, under the spandril, in Plate VII., the reader will see the mode of managing the intersection of similar mouldings, which was universal in the great periods. They melted into each other, and became one at the point of crossing, or of contact; and even the suggestion of so sharp intersection as this of Lisieux is usually avoided (this design being, of course, only a pointed form of the earlier Norman arcade, in which the arches are interlaced, and lie each over the preceding, and under the following, one, as in Anselm's tower at Canterbury), since, in the plurality of designs, when mouldings meet each other, they coincide through some considerable portion of their curves, meeting by contact, rather than by intersection; and at the point of coincidence the section of each separate moulding becomes common to the two thus melted into each other. Thus, in the junction of the circles of the window of the Palazzo Foscari, Plate VIII., given accurately in fig. 8, Plate IV., the section across the line _s_, is exactly the same as that across any break of the separated moulding above, as [=s]. It sometimes, however, happens, that two different mouldings meet each other. This was seldom permitted in the great periods, and, when it took place, was most awkwardly managed. Fig. 1, Plate IV. gives the junction of the mouldings of the gable and vertical, in the window of the _spire_ of Salisbury. That of the gable is composed of a single, and that of the vertical of a double cavetto, decorated with ball-flowers; and the larger single moulding swallows up one of the double ones, and pushes forward among the smaller balls with the most blundering and clumsy simplicity. In comparing the sections it is to be observed that, in the upper one, the line _a b_ represents an actual vertical in the plane of the window; while, in the lower one, the line _c d_ represents the horizontal, in the plane of the window, indicated by the perspective line _d e_.