Page:Ruskin - The Seven Lamps of Architecture.djvu/70

42 framework would, therefore, be generally felt as a departure from the first principles of the art. Abstractedly there appears no reason why iron should not be used as well as wood; and the time is probably near when a new system of architectural laws will be developed, adapted entirely to metallic construction. But I believe that the tendency of all present sympathy and association is to limit the idea of architecture to non-metallic work; and that not without reason. For architecture being in its perfection the earliest, as in its elements it is necessarily the first, of arts, will always precede, in any barbarous nation, the possession of the science necessary either for the obtaining or the management of iron. Its first existence and its earliest laws must, therefore, depend upon the use of materials Accessible in quantity, and on the surface of the earth; that is to say, clay, wood, or stone: and as I think it cannot but be generally felt that one of the chief dignities of architecture is its historical use; and since the latter is partly dependent on consistency of style, it will be felt right to retain as far as may be, even in periods of more advanced science, the materials and principles of earlier ages.

X. But whether this be granted me or not, the fact is, that every idea respecting size, proportion, decoration, or construction, on which we are at present in the habit of acting or judging, depends on presupposition of such materials: and as I both feel myself unable to escape the influence of these prejudices, and believe that my readers will be equally so, it may be perhaps permitted to me to assume that true architecture does not admit iron as a constructive material, and that such works as the cast-iron central spire of Rouen Cathedral, or the iron roofs and pillars of our railway stations, and of some of our churctes, are not architecture at all. Yet it is evident that metals may, and sometimes must, enter into the construction to a certain extent, as nails in