Page:A Treatise on Painting.djvu/280

 I say, that white terminating abruptly upon a dark ground, will cause that part where it terminates to appear darker, and the white whiter.

 

window must be open to the sky, and the walls painted of a reddish colour. The summertime is the best, when the clouds conceal the sun, or else your walls on the south side of the room must be so high, as that the sun-beams cannot strike on the opposite side, in order that the reflexion of those beams may not destroy the shadows.   window which gives light to a painting-room, ought to be made of oiled paper, without any cross bar, or projecting edge at the opening, or any sharp angle in the inside of the wall, but should be slanting by degrees the whole thickness of it; and the sides be painted black.   shadows of any colour whatever must participate of that colour more or less, as it is nearer to, Rh