How it was made, may not be always very easy to say; but with what it was painted there is no manner of question. All those beautiful violet veinings and variegations of the marbles of Sicily and Spain, the glowing orange and amber colours of those of Siena, the deep russet of the Rosso antico, and the blood-colour of all the precious jaspers that enrich the temples of Italy; and, finally, all the lovely transitions of tint in the pebbles of Scotland and the Rhine, which form, though not the most precious, by far the most interesting portion of our modern jewellers' work;—all these are painted by nature with this one material only, variously proportioned and applied—the oxide of iron that stains your Tunbridge springs.

But this is not all, nor the best part of the work of iron. Its service in producing these beautiful stones is only rendered to rich people, who can afford to quarry and polish them. But Nature paints for all the world, poor and rich together: and while, therefore, she thus adorns the innermost rocks of her hills, to tempt your investigation, or indulge your luxury,—she paints, far more carefully, the outsides of the hills, which are for the eyes of the shepherd and the ploughman. I spoke just now of the effect in the roofs of our villages of their purple slates: but if the slates are beautiful even in their flat and formal rows on house-roofs, much more are they beautiful on the rugged crests and flanks of their native mountains. Have you ever considered, in speaking as we do so often of distant blue hills, what it is that makes them blue? To a certain extent it is distance; but distance alone will not do it. Many hills look white, however distant. That lovely dark purple colour of our Welsh and Highland hills is owing, not to their distance merely, but to their rocks. Some of their rocks are, indeed, too dark to be beautiful, being black or ashy gray; owing to imperfect and porous structure. But when you see this dark colour dashed with russet and blue, and coming out in masses among the green ferns, so purple that you can hardly tell at first whether it is rock or heather, then you must thank your old Tunbridge friend, the oxide of iron.

But this is not all. It is necessary for the beauty of hill scenery that Nature should colour not only her soft rocks, but her hard ones; and she colours them with the same thing, only more beautifully. Perhaps you have wondered at my use of the word "purple," so often of stones; but the Greeks, and still more the Romans, who had profound respect for purple, used it of stone long ago. You have all heard of "porphyry" as among the most precious of the harder massive stones. The colour which gave it that noble name, as well as that which gives the flush to all the rosy granite of Egypt—yes, and to the rosiest summits of the Alps themselves—is still owing to the same substance—your humble oxide of iron.

And last of all:

A nobler colour than all these—the noblest colour ever seen on this earth—one which belongs to a strength greater than that of the Egyptian granite, and to a beauty greater than that of the sunset or the rose—is still mysteriously connected with the presence of this dark iron. I believe it is not ascertained on what the crimson of blood actually depends; but the colour is connected, of course, with its vitality, and that vitality with the existence of iron as one of its substantial elements.

Is it not strange to find this stern and strong metal mingled so delicately in our human life, that we cannot even blush without its help? Think of it, my fair and gentle hearers; how terrible the alternative—sometimes you have actually no choice but to be brazen- faced, or iron-faced!

In this slight review of some of the functions of the metal, you observe that I confine myself strictly to its operations as a colouring element. I should only confuse your conception of the facts, if I endeavoured to describe its uses as a substantial element, either in strengthening rocks, or influencing vegetation by the decomposition of rocks. I have not, therefore, even glanced at any of the more serious uses of the metal in the economy of nature. But what I wish you to carry clearly away with you is the remembrance that in all these uses the metal would be nothing without the air. The pure metal has no power, and never occurs in nature at all except in meteoric stones, whose fall no one can account for, and which are useless after they have fallen: in the necessary work of the world, the iron is invariably joined with the oxygen, and would be capable of no service or beauty whatever without it.

II. IRON IN ART.—Passing, then, from the offices of the metal in the operations of nature to its uses in the hands of man, you must remember, in the outset, that the type which has been thus given you, by the lifeless metal, of the action of body and soul together, has noble antitype in the operation of all human power. All art worthy the name is the energy—neither of the human body alone, nor of the human soul alone, but of both united, one guiding the other: good craftsmanship and work of the fingers, joined with good emotion and work of the heart.

There is no good art, nor possible judgment of art, when these two are not united; yet we are constantly trying to separate them. Our amateurs cannot be persuaded but that they may produce some kind of art by their fancy or sensibility, without going through the necessary manual toil. That is entirely hopeless. Without a certain number, and that a very great number, of steady acts of hand—a practice as careful and constant as would be necessary to learn any other manual business—no drawing is possible. On the other side, the workman, and those who employ him, are continually trying to produce art by trick or habit of fingers, without using their fancy or sensibility. That also is hopeless. Without mingling of heart-passion with hand-power, no art is possible. [Note: No fine art, that is. See the previous definition of fine art at p. 38.] The highest art unites both in their intensest degrees: the action of the hand at its finest, with that of the heart at its fullest.

Hence it follows that the utmost power of art can only be given in a material capable of receiving and retaining the influence of the subtlest touch of the human hand. That hand is the most perfect agent of material power existing in the universe; and its full subtlety can only be shown when the material it works on, or with, is entirely yielding. The chords of a perfect instrument will receive it, but not of an imperfect one; the softly bending point of the hair pencil, and soft melting of colour, will receive it, but not even the chalk or pen point, still less the steel point, chisel, or marble. The hand of a sculptor may, indeed, be as subtle as that of a painter, but all its subtlety is not bestowable nor expressible: the touch of Titian, Correggio, or Turner, [Note: See Appendix IV., "Subtlety of Hand.">[ is a far more marvellous piece of nervous action than can be shown in anything but colour, or in the very highest conditions of executive expression in music. In proportion as the material worked upon is less delicate, the execution necessarily becomes lower, and the art with it. This is one main principle of all work. Another is, that whatever the material you choose to work with, your art is base if it does not bring out the distinctive qualities of that material.