Even the sculptor has not refused iron. Pliny says there were two statues in Rhodes, one of iron and copper, and the other, a Hercules, entirely of iron. In the palace at Prague there is a St. George horsed and armed, the work of the fourteenth century. The qualities natural to iron which it has to offer for sculpture may best be appreciated by seeing the examples at the Museum of Geology, in Jermyn Street. On the staircase there are two large dogs, two ornamental candelabra, and two figures; the dogs, although not fine as sculpture, are well treated, in mass and surface, for the metal. In the same museum there is a smaller statue still better for surface and finish, a French work signed and dated 1841, and, therefore, half an antique. But for ordinary foundry-work without surface finish--probably the most appropriate, certainly the most available, method--the little lions on the outer rail at the British Museum are proof of how sufficient feeling for design will dignify any material for any object; they are by the late Alfred Stevens, and are thoroughly iron beasts, so slightly modelled that they would be only blocked out for bronze. In the Geological Museum are also specimens of Berlin and Ilsenburg manufacture; they serve to point the moral that ingenuity is not art, nor tenuity refinement.
The question of rust is a difficult one, the oxide not being an added beauty like the patina acquired by bronze, yet the decay of cast iron is much less than is generally thought, especially on large smooth surfaces, if the casting has been once treated by an oil bath or a coating of hot tar: the celebrated iron pillar of Delhi, some twenty feet high, has stood for fourteen centuries, and shows, it is said, little evidence of decay. It would be interesting to see how cast spheres of good iron would be affected in our climate, if occasionally coated with a lacquer. In painting, the range of tints best approved is black through gray to white: the simple negative gray gives a pleasant unobtrusiveness to the well-designed iron-work of the Northern Station in Paris, whereas our almost universal Indian red is a very bad choice--a hot coarse colour, you must see it, and be irritated, and it is surely the only colour that gets worse as it bleaches in the sun. Gilding is suitable to a certain extent; but for internal work the homely black-leading cannot be bettered.