Sec. 6. To this supremacy in mosses and flowers we have next to add an inestimable gain in the continual presence and power of water. Neither in its clearness, its color, its fantasy of motion, its calmness of space, depth, and reflection, or its wrath, can water be conceived by a lowlander, out of sight of sea. A sea wave is far grander than any torrent--but of the sea and its influences we are not now speaking; and the sea itself, though it _can_ be clear, is never calm, among our shores, in the sense that a mountain lake can be calm. The sea seems only to pause; the mountain lake to sleep, and to dream. Out of sight of the ocean, a lowlander cannot be considered ever to have seen water at all. The mantling of the pools in the rock shadows, with the golden flakes of light sinking down through them like falling leaves, the ringing of the thin currents among the shallows, the flash and the cloud of the cascade, the earthquake and foam-fire of the cataract, the long lines of alternate mirror and mist that lull the imagery of the hills reversed in the blue of morning,--all these things belong to those hills as their undivided inheritance. Sec. 7. To this supremacy in wave and stream is joined a no less manifest preeminence in the character of trees. It is possible among plains, in the species of trees which properly belong to them, the poplars of Amiens, for instance, to obtain a serene simplicity of grace, which, as I said, is a better help to the study of gracefulness, as such, than any of the wilder groupings of the hills; so also, there are certain conditions of symmetrical luxuriance developed in the park and avenue, rarely rivalled in their way among mountains; and yet the mountain superiority in foliage is, on the whole, nearly as complete as it is in water; for exactly as there are some expressions in the broad reaches of a navigable lowland river, such as the Loire or Thames, not, in their way, to be matched among the rock rivers, and yet for all that a lowlander cannot be said to have truly seen the element of water at all; so even in his richest parks and avenues he cannot be said to have truly seen trees. For the resources of trees are not developed until they have difficulty to contend with; neither their tenderness of brotherly love and harmony, till they are forced to choose their ways of various life where there is contracted room for them, talking to each other with their restrained branches. The various action of trees rooting themselves in inhospitable rocks, stooping to look into ravines, hiding from the search of glacier winds, reaching forth to the rays of rare sunshine, crowding down together to drink at sweetest streams, climbing hand in hand among the difficult slopes, opening in sudden dances round the mossy knolls, gathering into companies at rest among the fragrant fields, gliding in grave procession over the heavenward ridges,--nothing of this can be conceived among the unvexed and unvaried