Corot (1796-1875) though classically trained under Bertin, and though somewhat apart from the other men in his life, belongs with this group. He was a man whose artistic life was filled with the beauty of light and air. These he painted with great singleness of aim and great poetic charm. Most of his work is in a light silvery key of color, usually slight in composition, simple in masses of light and dark, and very broadly but knowingly handled with the brush. He began painting by using the minute brush, but changed it later on for a freer style which recorded only the great omnipresent truths and suppressed the small ones. He has never had a superior in producing the permeating light of morning and evening. For this alone, if for no other excellence, he deservedly holds high rank. Rousseau (1812-1867) was one of the foremost of the recognized leaders, and probably the most learned landscapist of this century. A man of many moods and methods he produced in variety with rare versatility. Much of his work was experimental, but at his best he had a majestic conception of nature, a sense of its power and permanence, its volume and mass, that often resulted in the highest quality of pictorial poetry. In color he was rich and usually warm, in technic firm and individual, in sentiment at times quite sublime. At first he painted broadly and won friends among the artists and sneers from the public; then in his middle style he painted in detail, and had a period of popular success; in his late style he went back to the broad manner, and died amid quarrels and vexations of spirits. His long-time friend and companion, Jules Dupre (1812-1889), hardly reached up to him, though a strong painter in landscape and marine. He was a good but not great colorist, and, technically, his brush was broad enough but sometimes heavy. His late work is inferior in sentiment and labored in handling. Diaz (1808-1876) was allied to Rousseau in aim and method, though not so sure nor so powerful a painter. He had fancy and variety in creation that sometimes ran to license, and in color he was clear and brilliant. Never very well trained, his drawing is often indifferent and his light distorted, but these are more than atoned for by delicacy and poetic charm. At times he painted with much power. Daubigny (1817-1878) seemed more like Corot in his charm of style and love of atmosphere and light than any of the others. He was fond of the banks of the Seine and the Marne at twilight, with evening atmospheres and dark trees standing in silent ranks against the warm sky. He was also fond of the gray day along the coast, and even the sea attracted him not a little. He was a painter of high abilities, and in treatment strongly individual, even distinguished, by his simplicity and directness. Unity of the whole, grasp of the mass entire, was his technical aim, and this he sought to get not so much by line as by color-tones of varying value. In this respect he seemed