February 12, 1850 - February 5, 1934,Davis, who was born in Philadelphia, Pennsylvania, was educated at Harvard. He returned to teach there in 1877 after a period as a meteorologist in Argentina and as an assistant with the North Pacific Survey. He became professor of physical geography in 1890 and of geology in 1898. Davis is acknowledged as the founder of geomorphology, the study of landforms. In his The Rivers and Valleys of Pennsylvania (1889) he first introduced what later became known as the Davisian systems of landscape analysis. His aim was to provide an explanatory description of how landforms change in an ideal situation and his most important contribution to this was his introduction of the cycle of erosion into geographical thought. He proposed a complete cycle of youth, maturity, and old age to describe the evolution of a landscape. In youth rivers occupy steep V-shaped valleys while in old age the valleys are broad. The end product would be a flat featureless plain he called a epeneplaine. This was an ideal cycle but in practice the cycle would invariably be interrupted by Earth movements. It was, nevertheless, strongly attacked by German geographers who objected to it on the grounds that it neglected such vital factors as weathering and climate in transforming the landscape. They also believed him to be undermining their argument that landforms could only be discovered by local fieldwork and the production of regional monographs. Davis also produced an influential work,  Related Paintings of William Morris Davis :. | Adoration of the Shepherds | The children toward the forest | St Christopher Facing to the Right | Portrait of Ludwig van Beethoven | Mika Mo Morozov |
Related Artists:
Maron, Anton von
Austrian, 1733-1808 Austrian painter. He studied at the Vienna Akademie and, in 1755, he went to Rome, where he was based for the rest of his life. From 1756 to 1761 he was first the pupil then the assistant of Anton Raphael Mengs. In 1765 he married Mengs's sister, the miniature painter Theresia Concordia Mengs. After collaborating on Mengs's fresco paintings in Rome (at S Eusebio and the Villa Albani; both in situ), Maron, working independently in Rome, spent some time on altar pictures (S Maria dell'Anima) and on various decorative projects. Mengs's influence is evident in Maron's ceiling pictures in the casino of the Villa Borghese (1784; in situ), where five paintings tell the Story of Aeneas and Dido in the style of quadri riportati, using clear construction, sharply defined drawing and a historical concept based on antiquity. Although he received many commissions for this type of work, Maron's true gifts lay in the field of portraiture. Along with Pompeo Batoni, Maron was the most celebrated portrait painter in 18th-century Rome, and he received an enormous number of commissions from princes, diplomats and church dignitaries and from English aristocrats visiting Rome as part of their Grand Tour. Maron painted such sitters in the same style as did Batoni, usually full-length and life-size, in elegantly fashionable dress, against backgrounds of Classical sculptures and views of Rome. Portraits such as those of Francis, Prince of Anhalt Dessau
Mota, Jose de la
Mexican, Active 1708-25
Delaunay, Robert
French Cubist Painter, 1885-1941 French painter, printmaker and writer. Taking Cubism as one of his points of departure, he first developed a vocabulary of colour planes only distantly dependent on observed motifs, and by the 1930s he had arrived at a purely self-sufficient language of geometric forms. He remained active as a theoretician until the end of his life,