"The House on the Moor" is a novel by Mrs. Oliphant first published in 1861. Extract: "Behind him, hung by the side of the window, in the worst light of the room, is a portrait, a very common work, done by a mediocre painter, but in all probability very like its original, for the face looks down through the gloom with a real smile, which paint cannot give—a sweet, home-like, domestic woman, such another as Susan will be when the years and the hours have carried her into her own life. There can be no doubt it is Susan's mother and this man's wife. There is no other picture in the house, and he cares so little for anyone seeing this, that he has hung it in the shadows of the red moreen curtains, where nobody can distinguish the features. Most likely he knows the features well enough to penetrate that darkness; for though he sits with his back to it most usually, it is for his pleasure it is here."
