So again, iron is eminently a ductile and tenacious substance-- tenacious above all things, ductile more than most. When you want tenacity, therefore, and involved form, take iron. It is eminently made for that. It is the material given to the sculptor as the companion of marble, with a message, as plain as it can well be spoken, from the lips of the earth-mother, "Here's for you to cut, and here's for you to hammer. Shape this, and twist that. What is solid and simple, carve out; what is thin and entangled, beat out. I give you all kinds of forms to be delighted in;--fluttering leaves as well as fair bodies; twisted branches as well as open brows. The leaf and the branch you may beat and drag into their imagery: the body and brow you shall reverently touch into their imagery. And if you choose rightly and work rightly, what you do shall be safe afterwards. Your slender leaves shall not break off in my tenacious iron, though they may be rusted a little with an iron autumn. Your broad surfaces shall not be unsmoothed in my pure crystalline marble--no decay shall touch them. But if you carve in the marble what will break with a touch, or mould in the metal what a stain of rust or verdigris will spoil, it is your fault--not mine." These are the main principles in this matter; which, like nearly all other right principles in art, we moderns delight in contradicting as directly and specially as may be. We continually look for, and praise, in our exhibitions the sculpture of veils, and lace, and thin leaves, and all kinds of impossible things pushed as far as possible in the fragile stone, for the sake of showing the sculptor's dexterity. [Footnote: I do not mean to attach any degree of blame to the effort to represent leafage in marble for certain expressive purposes. The later works of Mr. Munro have depended for some of their most tender thoughts on a delicate and skilful use of such accessories. And in general, leaf sculpture is good and admirable, if it renders, as in Gothic work, the grace and lightness of the leaf by the arrangement of light and shadow --supporting the masses well by strength of stone below; but all carving is base which proposes to itself _slightness_ as an aim, and tries to imitate the absolute thinness of thin or slight things, as much modern wood carving does, I saw in Italy, a year or two ago, a marble sculpture of birds' nests.] On the other hand, we _cast_ our iron into bars--brittle, though an inch thick--sharpen them at the ends, and consider fences, and other work, made of such materials, decorative! I do not believe it would be easy to calculate the amount of mischief done to our taste in England by that fence iron-work of ours alone. If it were asked of us by a single characteristic, to distinguish the dwellings of a country into two broad sections; and to set, on one side, the places where people were, for the most part, simple, happy, benevolent, and honest; and, on the other side, the