During the 1870s and 1880s, a loose group of French artists, including Pissarro, Monet, and Renoir, adopted a style of painting and subject matter that challenged the art prompted by the Academie Francaise and the Salons where "official" assumptions about the meaning of painting prevailed. What has been called "the revolutionary nature of the Impressionist enterprise" emerged from political radicalism, belief in science and individualism, and a view...