Ariel was nothing in his ubiquity to him, though he put a span about the world in forty minutes; "but there was some apology for the public's not understanding this, for few people have had the opportunity of seeing the sea at such a time, and when they have, cannot face it. To hold by a mast or rock, and watch it, is a prolonged endurance of drowning, which few people have courage to go through. To those who have, it is one of the noblest lessons in nature." Very few people, indeed, and those few "involuntary experimentalists." We are glad to get on dry land again, "brown furze or any thing"--and here we must question one of his truths of vegetation: he asserts, that the stems of all trees, the "ordinary trees of Europe, do not taper, but grow up or out, in undiminished thickness, till they throw out branch and bud, and then go off again to the next of equal thickness." We have carefully examined many trees this last week, and find it is not the case; in almost all, the bulging at the bottom, nearest the root, is manifest. There is an early association in our minds, that the birch for instance is remarkably tapering in its twigs. We would rather refer our "sworn measurer" to the factor than the painter, and we very much question whether his "top and top" will meet the market. We are satisfied the fact is not as he states it, and surely nature works not by such measure rule. We suspect, for nature we should here read Turner, for his trees, certainly, are strange things; it is true, he generally shirks them. We do not remember one picture that has a good, true, _bona fide_, conspicuous tree in it. The reader will not be surprised to learn that the worst painter of trees was Gaspar Poussin! and that the perfection of trees is to be found in Turner's "Marley," where most people will think the trees look more like brooms than trees. The chapter on "the Truth of Turner" concludes with a quotation--we presume the extract from a letter from Mr Turner to the author. If so, Mr Turner has somewhat caught the author's style, and tells very simple truths in a very fine manner, thus:--"I cannot gather the sunbeams out of the east, or I would make _them_ tell you what I have seen; but read this, and interpret this, and let us remember together. I cannot gather the gloom out of the night-sky, or I would make that teach you what I have seen; but read this, and interpret this, and let us feel together." We must pause. Really we do not see the slightest necessity of an interpretation here. It is a simple fact. He cannot extract "sunbeams" from cucumbers--from the east, we should say. The only riddle seems to be, that they should, in one instance, remember together, and in the other, feel together; only we guess that, being night-gloom, people naturally feel about them in the dark. But he proceeds--"And if you have not that within you which I can summon to my aid, if you have not the sun in your spirit, and the passion in your heart, which my words