§ 18. The mineral and it differing thus widely in separate being, they differ no less in modes of companionship. The mineral crystals group themselves neither in succession, nor in sympathy; but great and small recklessly strive for place, and deface or distort each other as they gather into opponent asperities. The confused crowd fills the rock cavity, hanging together in a glittering, yet sordid heap, in which nearly every crystal, owing to their vain contention, is imperfect, or impure. Here and there one, at the cost and in defiance of the rest, rises into unwarped shape or unstained clearness. But the order of the leaves is one of soft and subdued concession. Patiently each awaits its appointed time, accepts its prepared place, yields its required observance. Under every oppression of external accident, the group yet follows a law laid down in its own heart; and all the members of it, whether in sickness or health, in strength or languor, combine to carry out this first and last heart law; receiving, and seeming to desire for themselves and for each other, only life which they may communicate, and loveliness which they may reflect. FOOTNOTES: [1] I believe the undermost of the two divisions of the leaf represents vegetable tissue _returning_ from the extremity. See Lindley's _Introduction to Botany_ (1848), vol. i. p. 253. [2] For farther notes on this subject, see my _Elements of Drawing_, p. 286. CHAPTER V. LEAF ASPECTS. § 1. Before following farther our inquiry into tree structure, it will rest us, and perhaps forward our work a little, to make some use of what we know already. It results generally from what we have seen that any group of four or five leaves presenting itself in its natural position to the eye, consists of a series of forms connected by exquisite and complex symmetries, and that these forms will be not only varied in themselves, but every one of them seen under a different condition of foreshortening. The facility of drawing the group may be judged of by a comparison. Suppose five or six boats, very beautifully built, and sharp in the prow, to start all from one point, and the first bearing up into the wind, the other three or four to fall off from it in succession an equal number of points,[1] taking each, in consequence, a different slope of deck from the stem of the sail. Suppose, also, that the bows of these boats were transparent, so that you could see the under sides of their decks as well as the upper;--and that it were required of you to draw all their five decks, the under or upper side, as their curve showed it, in true foreshortened perspective, indicating the exact distance each boat had reached at a given moment from the central point they started from. If you can do that, you can draw a rose-leaf. Not otherwise.