Chemical element named mendelevium in honor of D.I. Mendeleev, the first to arrange the elements in a periodic manner. Most recently, the synthesis of element 118 (since named oganesson) was reported in October 2006, and the synthesis of element 117 (tennessine) was reported in April 2010. Ten materials familiar to various prehistoric cultures are now known to be chemical elements: Carbon, copper, gold, iron, lead, mercury, silver, sulfur, tin, and zinc. Three additional materials now accepted as elements, arsenic, antimony, and bismuth, were recognized as distinct substances prior to 1500 AD. Phosphorus, cobalt, and platinum were isolated before 1750. Most of the
Hospital in Arles ""Souvenirs de la maison des morts" ("Memories of the House of the Dead"). Vincent described the painting to his sister Wil, "In the foreground a big black stove around which some grey and black forms of patients and then behind the very long ward paved in red with the two rows of white beds, the partitions white, but a lilac- or green-white, and the windows with pink curtains, with green curtains, and in the background two figures of nuns in black and white. The ceiling is violet with large beams." Debra Mancoff, author of "Van Gogh's Flowers," comments, "In his