The Stones of Venice, Volume 2 (of 3),

by John Ruskin

Fig. XVI.

Fig. XVII.

§ XCV. The system, then, of what is called Foliation, whether simple, as in the cusped arch, or complicated, as in tracery, rose out of this love of leafage; not that the form of the arch is intended to imitate a leaf, but to be invested with the same characters of beauty which the designer had discovered in the leaf. Observe, there is a wide difference between these two intentions. The idea that large Gothic structure, in arches and roofs, was intended to imitate vegetation is, as above noticed, untenable for an instant in the front of facts. But the Gothic builder perceived that, in the leaves which he copied for his minor decorations, there was a peculiar beauty, arising from certain characters of curvature in outline, and certain methods of subdivision and of radiation in structure. On a small scale, in his sculptures and his missal-painting, he copied the leaf or thorn itself; on a large scale he adopted from it its abstract sources of beauty, and gave the same kinds of curvatures and the same species of subdivision to the outline of his arches, so far as was consistent with their strength, never, in any single instance, suggesting the resemblance to leafage by irregularity of outline, but keeping the structure perfectly simple, and, as we have seen, so consistent with the best principles of masonry, that in the finest Gothic designs of arches, which are always single cusped (the cinquefoiled arch being licentious, though in early work often very lovely), it is literally impossible, without consulting the context of the building, to say whether the cusps have been added for the sake of beauty or of strength; nor, though in mediæval architecture they were, I believe, assuredly first employed in mere love of their picturesque form, am I absolutely certain that their earliest invention was not a structural effort. For the earliest cusps with which I am acquainted are those used in the vaults of the great galleries of the Serapeum, discovered in 1850 by M. Maniette at Memphis, and described by Colonel Hamilton in a paper read in February last before the Royal Society of Literature.[72] The roofs of its galleries were admirably shown in Colonel Hamilton’s drawings made to scale upon the spot, and their profile is a cusped round arch, perfectly pure and simple; but whether thrown into this form for the sake of strength or of grace, I am unable to say.

§ XCVI. It is evident, however, that the structural advantage of the cusp is available only in the case of arches on a comparatively small scale. If the arch becomes very large, the projections under the flanks must become too ponderous to be secure; the suspended weight of stone would be liable to break off, and such arches are therefore never constructed with heavy cusps, but rendered secure by general mass of masonry; and what additional appearance of support may be thought necessary (sometimes a considerable degree of actual support) is given by means of tracery.

Fig. XVIII.

§ XCVII. Of what I stated in the second chapter of the “Seven Lamps” respecting the nature of tracery, I need repeat here only this much, that it began in the use of penetrations through the stone-work of windows or walls, cut into forms which looked like stars when seen from within, and like leaves when seen from without: the name foil or feuille being universally applied to the separate lobes of their extremities, and the pleasure received from them being the same as that which we feel in the triple, quadruple, or other radiated leaves of vegetation, joined with the perception of a severely geometrical order and symmetry. A few of the most common forms are represented, unconfused by exterior mouldings, in [Fig. XVIII.], and the best traceries are nothing more than close clusters of such forms, with mouldings following their outlines.

§ XCVIII. The term “foliated,” therefore, is equally descriptive of the most perfect conditions both of the simple arch and of the traceries by which, in later Gothic, it is filled; and this foliation is an essential character of the style. No Gothic is either good or characteristic which is not foliated either in its arches or apertures. Sometimes the bearing arches are foliated, and the ornamentation above composed of figure sculpture; sometimes the bearing arches are plain, and the ornamentation above them is composed of foliated apertures. But the element of foliation must enter somewhere, or the style is imperfect. And our final definition of Gothic will, therefore, stand thus:—

“Foliated Architecture, which uses the pointed arch for the roof proper, and the gable for the roof-mask.”

§ XCIX. And now there is but one point more to be examined, and we have done.