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 :. | California landscape | Une Amazone Au Bois De Boulogne | The birthday table | The day of Planting | Boniface Moba He Santos |
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Gerardus Laurentius Keultjes
painted The assault on Algiers by the allied Anglo-Dutch squadron in 1817
Raimundo Madrazo
(1841, Rome - 1920) was a Spanish realist painter. He studied painting under his father, Federico de Madrazo, and at the School of the Beaux Arts in Madrid. After 1860 he lived mostly in Paris, where he studied under L??on Cogniet. His remarkable technical ability made him a highly successful portrait painter in a Salon style.
Nicolae Tonitza
(Romanian pronunciation: [nikoˈla.e toˈnit͡sa]; April 13, 1886 - February 27, 1940) was a Romanian painter, engraver, lithographer, journalist and art critic. Drawing inspiration from Post-impressionism and Expressionism, he had a major role in introducing modernist guidelines to local art. Born in Bârlad, he left his home town in 1902 in order to attend the Iaşi National School of Fine Arts, where he had among his teachers Gheorghe Popovici and Emanoil Bardasare.The following year he visited Italy together with University of Bucharest students of archeology under the direction of Grigore Tocilescu.During that period, together with some of his fellow students, Tonitza painted the walls of Grozeşti church. In 1908 he left for Munich, where he attended the Royal Academy of Fine Arts; he began publishing political cartoons in Furnica, and contributing art criticism articles to Arta Română. Tonitza spent the following three years in Paris, where he visited artists' studios, and studied famous paintings.Although the young artist's creation would initially conform to the prevalent style, his gift for colour and his personal touch would eventually lead him towards experiment.Throughout his life, he remained committed to the Munich School, hailing its innovative style over the supposedly "obscure imitators of Matisse".