Portrait of Mary Ann Heide Norris (1830). Thomas Sully (American, 1783–1872). Oil on canvas. Philadelphia Museum of Art. Mrs. Norris’ idealized likeness demonstrates Sully’s interest in varying textures, as seen in the contrasts among her satin dress, fur stole, and porcelain skin. Set in a landscape with a dramatic sky, Mrs. Norris is sheltered by a high wall that harmoniously echoes the curvature of her figure and clothing.