"Not only is the form of leaf such as fits these plants to dwell in such inhospitable regions, but other circumstances also tend to this result. The stems are in both cases woody and flexible, so that while they bend to the wind they resist its destroying influence by their strength and elasticity. In relation to the stem of the papyrus," which is a plant constantly met with in Egyptian ornaments, "the late Sir W. J. Hooker mentions an interesting fact which manifests adaptation to its position. This plant grows in water, and attaches itself to the margins of rivers and streams, by sending forth roots and evolving long underground stems in the alluvium of the sides of the waters. Owing to its position it is exposed to the influences of the current, which it has to withstand, and this it does, not only by having its stems of a triangular form—a shape well adapted for withstanding pressure—but also by having them so placed in relation to the direction of the stream, that one angle always meets the current, and thus separates the waters as does the bow of a modern steam-ship."

I might multiply illustrations of this principle of fitness, or adaptation to purpose, as manifested in plants, to an almost indefinite extent; but when all had been said we should yet have but the simple truth before us, that the chief end which we should have in creating any object, is that of rendering it perfectly fitted to answer the proposed end. If those works which are beautiful were but invariably useful, as they should be; if those objects which are most beautiful were also the most convenient—and there is no reason why they should not be so—how the beautiful would become loved and sought after! Cost would be of little moment, the price would not be complained of, if beautiful objects were works of perfect utility. But, alas! it is far otherwise: that which is useful is often ugly, and that which is beautiful is often inconvenient to use. This very fact has given rise to the highly absurd fashion of having a second poker in a drawing-room set of fire-irons. The one poker is ornamental, possibly, but it is to be looked at; the other is for use, and as it is not to be looked at, it is hidden away in some corner, or close within the fender. I do not wonder at the second poker being required; for nineteen out of every twenty pokers of an ornamental (?) character which I have seen during the last few years would hurt the hand so insufferably if they were used to break a lump of coal with, that it would be almost impossible to employ them constantly for such a purpose. But why not abolish the detestable thing altogether? If the poker is to be retained as an ornament, place it on the table or chimney-piece of your drawing-room, and not down on the hearth, where it is at such a distance from the eye that its beauties cannot be discovered. It is no use saying it would be out of place in such a position. If to poke the fire with, its place is within the fender; if it is an ornament, it should be placed where it can be best seen—in a glass case, if worthy of protection.

I hope that sufficient has now been said upon this all-important necessity, that, if an object is to be beautiful it should also be useful, to cause us to consider it as a primary principle of design that all objects which we create must be useful. To this as a first law we shall constantly have to refer. When we construct a chair we shall ask, is it useful? is it strong? is it properly put together? could it be stronger without using more, or another, material? and then we should consider whether it is beautiful. When we design a bottle we shall inquire, is it useful? is it all that a bottle should be? could it be more useful? and then, is it beautiful? When we create a gas-branch we shall ask, does it fulfil all requirements, and perfectly answer the end for which it is intended? and then, is it beautiful? And in relation to patterns merely we shall also have to make similar inquiries. Thus, if drawing a carpet design, we shall inquire, is this form of ornament suitable to a woven fabric? is it suitable to the particular fabric for which it is intended? is the particular treatment of the ornament which we have adopted the best possible when we bear in mind that the carpet has to be walked over, as it is to act in relation to our furniture as a background does to a picture, and is to be viewed at some distance from the eye? and then, is it beautiful? Such inquiries we shall put respecting any object the formation of which we may suggest: hence, in all our inquiries, I shall, as I love art, consider utility before beauty, in order that my art may be fostered and not despised.

There are many subjects yet not named in these pages which we ought to consider, but I must content myself by merely mentioning them, and you must be willing to think of them, and consider them with such care as their importance may demand. Some of them, however, we shall refer to when considering the various manufactures.

A principle of great importance in respect to design is, that the material of which an object is formed should be used in a manner consistent with its own nature, and in that particular way in which it can be most easily "worked."

Another principle of equal importance with that just set forth, is this: that when an object is about to be formed, that material (or those materials) which is (or are) most appropriate to its formation should be sought and employed. These two propositions are of very great importance, and the principles which they set forth should never be lost sight of by the designer. They involve the first principles of successful designing, for if ignored the work produced cannot be satisfactory.

Curves will be found to be beautiful just as they are subtle in character; those which are most subtle in character being most beautiful.

The arc is the least beautiful of curves (I do not here speak of a circle, but of the line, as a line, which bounds the circle); being struck from one centre its origin is instantly detected, while the mind requires that a line, the contemplation of which shall be pleasurable, must be in advance of its knowledge, and call into activity its powers of inquiry. The elliptic curve, or curve bounding the ellipse, is more beautiful than the arc, for its origin is not so strikingly apparent, being formed from two centres. The curve of the egg is more beautiful still, being formed from three centres.[8] As the number of centres necessary to the formation of a curve increases, the difficulty of detecting its origin also becomes greater, and the variety which the curve presents is also proportionally great; the variety being obviously greater as the number of the centres from which it is struck is increased.

Proportion, like the curve, must be of a subtle nature.

A surface must never be divided for the purpose of decoration into halves. The proportion of 1 to 1 is bad. As proportion increases in subtlety it also increases in beauty. The proportion of 2 to 1 is little better; the proportion of 3 to 8, or of 5 to 8, or of 5 to 13, is, however, good, the last named being the best of those which I have adduced; for the pleasure derived from the contemplation of proportion increases with the difficulty of detecting it. This principle is true in relation to the division of a mass into primary segments, and of primary segments into secondary forms, as well as in relation to the grouping together of parts of various sizes; hence it is worthy of special note.