Read it through once

After this Amy subsided, till a mania for sketching from nature set her to haunting river, field, and wood, for picturesque studies, and sighing for ruins to copy. She caught endless colds sitting on damp grass to book "a delicious bit," composed of a stone, a stump, one mushroom, and a broken mullein-stalk, or "a heavenly mass of clouds," that looked like a choice display of feather-beds when done. She sacrificed her complexion floating on the river in the midsummer sun, to study light and shade, and got a wrinkle over her nose, trying after "points of sight," or whatever the squint-and-string performance is called.