But nature takes great care and pains to conceal this uniformity in her boughs. They are perpetually parting with little [§ 4. And care of nature to conceal the parallelism.]sprays here and there, which steal away their substance cautiously, and where the eye does not perceive the theft, until, a little way above, it feels the loss; and in the upper parts of the tree, the ramifications take place so constantly and delicately, that the effect upon the eye is precisely the same as if the boughs actually tapered, except here and there, where some avaricious one, greedy of substance, runs on for two or three yards without parting with anything, and becomes ungraceful in so doing.
Hence we see that although boughs may, and must be represented as actually tapering, they must only be so when they are [§ 5. The degree of tapering which may be represented as continuous.]sending off foliage and sprays, and when they are at such a distance that the particular forks and divisions cannot be evident to the eye; and farther, even in such circumstances the tapering never can be sudden or rapid. No bough ever, with appearance of smooth tapering, loses more than one tenth of its diameter in a length of ten diameters. Any greater diminution than this must be accounted for by visible ramification, and must take place by steps, at each fork.
And therefore we see at once that the stem of Gaspar Poussin's tall tree, on the right of the La Riccia, in the National Gallery, is a painting of a carrot or a parsnip, not of the trunk of [§ 6. The trees of Gaspar Poussin;]a tree. For, being so near that every individual leaf is visible, we should not have seen, in nature, one branch or stem actually tapering. We should have received an impression of graceful diminution; but we should have been able, on examination, to trace it joint by joint, fork by fork, into the thousand minor supports of the leaves. Gaspar Poussin's stem, on the contrary, only sends off four or five minor branches altogether, and both it and they taper violently, and without showing why or wherefore—without parting with a single twig—without showing one vestige of roughness or excrescence—and leaving, therefore, their unfortunate leaves to hold on as best they may. The latter, however, are clever leaves, and support themselves as swarming bees do, hanging on by each other.
But even this piece of work is a jest to the perpetration of the bough at the left-hand upper corner of the picture opposite to it,—the View near Albano. This latter is a representation of [§ 7. And of the Italian school generally, defy this law.]an ornamental group of elephants' tusks, with feathers tied to the ends of them. Not the wildest imagination could ever conjure up in it the remotest resemblance to the bough of a tree. It might be the claws of a witch—the talons of an eagle—the horns of a fiend; but it is a full assemblage of every conceivable falsehood which can be told respecting foliage—a piece of work so barbarous in every way, that one glance at it ought to prove the complete charlatanism and trickery of the whole system of the old landscape painters. For I will depart for once from my usual plan, of abstaining from all assertion of a thing's being beautiful or otherwise; I will say here, at once, that such drawing as this is as ugly as it is childish, and as painful as it is false; and that the man who could tolerate, much more, who could deliberately set down such a thing on his canvas, had neither eye nor feeling for one single attribute or excellence of God's works. He might have drawn the other stem in excusable ignorance, or under some false impression of being able to improve upon nature; but this is conclusive and unpardonable. Again, take the stem of the chief tree in Claude's Narcissus. It is a very faithful portrait of a large boa-constrictor, with a handsome tail; the kind of trunk which young ladies at fashionable boarding-schools represent with nosegays at the top of them, by way of forest scenery.
Let us refresh ourselves for a moment, by looking at the truth. We need not go to Turner, we will go to the man who, next to him, is unquestionably the greatest master of foliage in [§ 8. The truth, as it is given by J. D. Harding.]Europe—J. D. Harding. Take the trunk of the largest stone-pine, Plate 25, in the Park and the Forest. For the first nine or ten feet from the ground it does not lose one hairbreadth of its diameter. But the shoot, broken off just under the crossing part of the distant tree, is followed by an instant diminution of the trunk, perfectly appreciable both by the eye and the compasses. Again, the stem maintains undiminished thickness, up to the two shoots on the left, from the loss of which it suffers again perceptibly. On the right, immediately above, is the stump of a very large bough, whose loss reduces the trunk suddenly to about two-thirds of what it was at the root. Diminished again, less considerably, by the minor branch close to this stump, it now retains its diameter up to the three branches, broken off just under the head, where it once more loses in diameter, and finally branches into the multitude of head-boughs, of which not one will be found tapering in any part, but losing themselves gradually by division among their offshoots and spray. This is nature, and beauty too.
But the old masters are not satisfied with drawing carrots for boughs. Nature can be violated in more ways than one, and the industry with which they seek out and adopt every conceivable [§ 9. Boughs, in consequence of this law, must diminish where they divide. Those of the old masters often do not.]mode of contradicting her is matter of no small interest. It is evident, from what we have above stated of the structure of all trees, that as no boughs diminish where they do not fork, so they cannot fork without diminishing. It is impossible that the smallest shoot can be sent out of a bough without a diminution of the diameter above it; and wherever a branch goes off it must not only be less in diameter than the bough from which it springs, but the bough beyond the fork must be less by precisely the quantity of the branch it has sent off.[[71]] Now observe the bough underneath the first bend of the great stem in Claude's Narcissus; it sends off four branches like the ribs of a leaf. The two lowest of these are both quite as thick as the parent stem, and the stem itself is much thicker after it has sent off the first one than it was before. The top boughs of the central tree, in the Marriage of Isaac and Rebecca, ramify in the same scientific way.
But there are further conclusions to be drawn from this great principle in trees. As they only diminish where they divide, their increase of number is in precise proportion to their diminution [§ 10. Boughs must multiply as they diminish. Those of the old masters do not.]of size, so that whenever we come to the extremities of boughs, we must have a multitude of sprays sufficient to make up, if they were united, the bulk of that from which they spring. Where a bough divides into two equal ramifications, the diameter of each of the two is about two-thirds that of the single one, and the sum of their diameters, therefore, one-fourth greater than the diameter of the single one. Hence, if no boughs died or were lost, the quantity of wood in the sprays would appear one-fourth greater than would be necessary to make up the thickness of the trunk. But the lost boughs remove the excess, and therefore, speaking broadly, the diameters of the outer boughs put together would generally just make up the diameter of the trunk. Precision in representing this is neither desirable nor possible. All that is required is just so much observance of the general principle as may make the eye feel satisfied that there is something like the same quantity of wood in the sprays which there is in the stem. But to do this, there must be, what there always is in nature, an exceeding complexity of the outer sprays. This complexity gradually increases towards their extremities, of course exactly in proportion to the slenderness of the twigs. The slenderer they become, the more there are of them, until at last, at the extremities of the tree, they form a mass of intricacy, which in winter, when it can be seen, is scarcely distinguishable from fine herbage, and is beyond all power of definite representation; it can only be expressed by a mass of involved strokes. Also, as they shoot out in every direction, some are nearer, some more distant; some distinct, some faint; and their intersections and relations of distance are marked with the most exquisite gradations of aerial perspective. Now it will be found universally in the works of Claude, Gaspar, and Salvator, that the boughs do not get in the least complex or multiplied towards the extremities—that each large limb forks only into two or three smaller ones, each of which vanishes into the air without any cause or reason for such unaccountable conduct—unless that the mass of leaves transfixed upon it or tied to it, entirely dependent on its single strength, have been too much, as well they may be, for its powers of solitary endurance. This total ignorance of tree structure is shown throughout their works. The Sinon before Priam is an instance of it in a really fine work of Claude's, but the most gross examples are in the works of Salvator. It [§ 11. Bough-drawing of Salvator.]appears that this latter artist was hardly in the habit of studying from nature at all after his boyish ramble among the Calabrian hills; and I do not recollect any instance of a piece of his bough-drawing which is not palpably and demonstrably a made-up phantasm of the studio, the proof derivable from this illegitimate tapering being one of the most convincing. The painter is always visibly embarrassed to reduce the thick boughs to spray, and feeling (for Salvator naturally had acute feeling for truth) that the bough was wrong when it tapered suddenly, he accomplishes its diminution by an impossible protraction; throwing out shoot after shoot until his branches straggle all across the picture, and at last disappear unwillingly where there is no room for them to stretch any farther. The consequence is, that whatever leaves are put upon such boughs have evidently no adequate support, their power of leverage is enough to uproot the tree; or if the boughs are left bare, they have the look of the long tentacula of some complicated marine monster, or of the waving endless threads of bunchy sea-weed, instead of the firm, upholding, braced, and bending grace of natural boughs. I grant that this is in a measure done by Salvator from a love of ghastliness, and that in certain scenes it is in a sort allowable; but it is in a far greater degree done from pure ignorance of tree structure, as is sufficiently proved by the landscape of the Pitti palace, Peace burning the arms of War; where the spirit of the scene is intended to be quite other than ghastly, and yet the tree branches show the usual errors in an extraordinary degree; every one of their arrangements is impossible, and the trunk of the tree could not for a moment support the foliage it is loaded with. So also in the pictures of the Guadagni palace. And even where the skeleton look of branches is justifiable or desirable, there is no occasion for any violation of natural laws. I have seen more spectral character in the real limbs of a blasted oak, than ever in Salvator's best monstrosities; more horror is to be obtained by right combination of inventive line, than by drawing tree branches as if they were wing-bones of a pterodactyle. All departure from natural forms to give fearfulness is mere Germanism; it is the work of fancy, not of imagination,[[72]] and instantly degrades whatever it affects to third-rate level. There is nothing more marked in truly great men, than their power of being dreadful without being false or licentious. In Tintoret's Murder of Abel, the head of the sacrificed firstling lies in the corner of the foreground, obscurely sketched in, and with the light gleaming upon its glazed eyes. There is nothing exaggerated about the head, but there is more horror got out of it, and more of death suggested by its treatment, than if he had turned all the trees of his picture into skeletons, and raised a host of demons to drive the club.
It is curious that in Salvator's sketches or etchings there is less that is wrong than in his paintings,—there seems a fresher remembrance of nature about them. Not so with Claude. It is [§ 12. All these errors especially shown in Claude's sketches and concentrated in a work of G. Poussin's.]only by looking over his sketches, in the British Museum, that a complete and just idea is to be formed of his capacities of error; for the feeling and arrangement of many of them are those of an advanced age, so that we can scarcely set them down for what they resemble—the work of a boy ten years old; and the drawing being seen without any aids of tone or color to set it off, shows in its naked falsehood. The windy landscape of Poussin, opposite the Dido and Æneas, in the National Gallery, presents us, in the foreground tree, with a piece of atrocity which I think, to any person who candidly considers it, may save me all farther trouble of demonstrating the errors of ancient art. I do not in the least suspect the picture: the tones of it, and much of the handling, are masterly; yet that foreground tree comprises every conceivable violation of truth which the human hand can commit, or head invent, in drawing a tree—except only, that it is not drawn root uppermost. It has no bark, no roughness nor character of stem; its boughs do not grow out of each other, but are stuck into each other; they ramify without diminishing, diminish without ramifying, are terminated by no complicated sprays, have their leaves tied to their ends, like the heads of Dutch brooms; and finally, and chiefly, they are evidently not made of wood, but of some soft elastic substance, which the wind can stretch out as it pleases, for there is not a vestige of an angle in any one of them. Now, the fiercest wind [§ 13. Impossibility of the angles of boughs being taken out of them by wind.]that ever blew upon the earth, could not take the angles out of the bough of a tree an inch thick. The whole bough bends together, retaining its elbows, and angles, and natural form, but affected throughout with curvature in each of its parts and joints. That part of it which was before perpendicular being bent aside, and that which was before sloping, being bent into still greater inclination, the angle at which the two parts meet remains the same; or if the strain be put in the opposite direction, the bough will break long before it loses its angle. You will find it difficult to bend the angles out of the youngest sapling, if they be marked; and absolutely impossible, with a strong bough. You may break it, but you will not destroy its angles. And if you watch a tree in the wildest storm, you will find that though all its boughs are bending, none lose their character but the utmost shoots and sapling spray. Hence Gaspar Poussin, by his bad drawing, does not make his storm strong, but his tree weak; he does not make his gust violent, but his boughs of India-rubber.
These laws respecting vegetation are so far more imperative than those which were stated respecting water, that the greatest artist cannot violate them without danger, because they are laws [§ 14. Bough-drawing of Titian.]resulting from organic structure, which it is always painful to see interrupted; on the other hand, they have this in common with all laws, that they may be observed with mathematical precision, yet with no grateful result; the disciplined eye and the life in the woods are worth more than all botanical knowledge. For there is that about the growing of the tree trunk, and that grace in its upper ramification which cannot be taught, and which cannot even be seen but by eager watchfulness. There is not an Exhibition passes, but there appear in it hundreds of elaborate paintings of trees, many of them executed from nature. For three hundred years back, trees have been drawn with affection by all the civilized nations of Europe, and yet I repeat boldly, what I before asserted, that no men but Titian and Turner ever drew the stem of a tree.