[Illustration: FIG. 40.] [Illustration: FIG. 41.] § 10. The little ringed accumulation, repelled from the wood of the larger trunk at the base of small boughs, may be seen at a glance in any tree, and needs no illustration; but I give one from Salvator, Fig. 41 (from his own etching, _Democritus omnium Derisor_), which is interesting, because it shows the swelling at the bases of insertion, which yet, Salvator's eye not being quick enough to detect the law of descent in the fibres, he, with his usual love of ugliness, fastens on this swollen character, and exaggerates it into an appearance of disease. The same bloated aspect may be seen in the example already given from another etching, Vol. III., Plate 4, Fig. 8. [Illustration: FIG. 42.] § 11. I do not give any more examples from Claude. We have had enough already in Plate 4, Vol. III., which the reader should examine carefully. If he will then look forward to Fig. 61 here, he will see how Turner inserts branches, and with what certain and strange instinct of fidelity he marks the wrinkled enlargement and sinuous eddies of the wood rivers where they meet. And remember always that Turner's greatness and rightness in all these points successively depend on no scientific knowledge. He was entirely ignorant of all the laws we have been developing. He had merely accustomed himself to see impartially, intensely, and fearlessly. [Illustration: FIG. 43.] § 12. It may, perhaps, be interesting to compare, with the rude fallacies of Claude and Salvator, a little piece of earliest art, wrought by men who could see and feel. The scroll, Fig. 42, is a portion of that which surrounds the arch in San Zeno of Verona, above the pillar engraved in the _Stones of Venice_, Plate 17, Vol. I. It is, therefore, twelfth, or earliest thirteenth century work. Yet the foliage is already full of spring and life; and in the part of the stem, which I have given of its real size in Fig. 43, the reader will perhaps be surprised to see at the junctions the laws of vegetation, which escaped the sight of all the degenerate landscape-painters of Italy, expressed by one of her simple architectural workmen six hundred years ago. We now know enough, I think, of the internal conditions which regulate tree-structure to enable us to investigate finally, the great laws of branch and stem aspect. But they are very beautiful; and we will give them a separate chapter. FOOTNOTES: [1] See the note on Fig. 11, at page 17, which shows these two directions in a shoot of lime.