EDGAR DEGAS, 1882, Getty Museum. Strange clouds in an indoor landscape. Amorphous, organic forms of aubergine and brown, without detail....

ANDREA DI BARTOLO, Madonna and Child with the Four Evangelists, 1400 - 1410, Walters Art Museum, Baltimore. Angels whisper behind a...

HENRI MATISSE, 1907, Baltimore Museum of Art. The paint is thin and ink-like, applied in translucent layers over time. Some areas in the...