The figure given represents the _apparent_ color[17] of the top of the Aiguille Bouchard (the mountain which is seen from the village of Chamouni, on the other side of the Glacier des Bois), distant, by Forbes's map, a furlong or two less than four miles in a direct line from the point of observation. The observation was made on a warm sunny morning, about eleven o'clock, the sky clear blue; the mountain seen against it, its shadows grey purple, and its sunlit parts greenish. Then the darkest part of the mountain was _lighter than pure white paper_, held upright in full light at the window, parallel to the direction in which the light entered. And it will thus generally be found impossible to represent, in any of its _true_ colors, scenery distant more than two or three miles, in full daylight. The deepest shadows are whiter than white paper. Sec. 9. As, however, we pass to nearer objects, true representation gradually becomes possible;--to what degree is always of course ascertainable accurately by the same mode of experiment. Bring the edge of the paper against the thing to be drawn, and on that edge--as precisely as a lady would match the colors of two pieces of a dress--match the color of the landscape (with a little opaque white mixed in the tints you use, so as to render it easy to lighten or darken them). Take care not to imitate the tint as you believe it to be, but accurately as it is; so that the colored edge of the paper shall not be discernible from the color of the landscape. You will then find (if before inexperienced) that shadows of trees, which you thought were dark green or black, are pale violets and purples; that lights, which you thought were green, are intensely yellow, brown, or golden, and most of them far too bright to be matched at all. When you have got all the imitable hues truly matched, sketch the masses of the landscape out completely in those true and ascertained colors; and you will find, to your amazement, that you have painted it in the colors of Turner,--in those very colors which perhaps you have been laughing at all your life,--the fact being that he, and he alone, of all men, _ever painted Nature in her own colors_. Sec. 10. "Well, but," you will answer, impatiently, "how is it, if they are the true colors, that they look so unnatural?"