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Georg Marcgraff (1610-1644) was a German astronomer  and naturalist.  In 1637, he was appointed astronomer of a company being formed to sail to the Dutch colony in Brazil. He accompanied Willem Piso, a physician and the newly appointed governor of the Dutch possessions in that country.  Later, Marcgraf worked for Johannes Maruitiius of Nassau, who allowed Marcgraf to explore and later mapa considerable part of Brazil. He arrived in Brazil in early 1638 and undertook the first zoological, botanical, and astronomical expedition there, exploring various parts of the colony to study its natural history and geography.  He later explored the coast of Guinea, where he died in 1644

During his time in Brazil, Marcgraf and Cornelis Goliath created a map of Brazil, under the sponsorship of Johan Maurits, which was completed in 1643. This map remained the most important ad accurate cartographic representation of Brazil until the 19th century. The Marcgraf Map—actually a series of maps—is illustrated with engravings that offer panoramas of Brazilian life.  The illustrations in the map were probably based directly on the drawings of Frans Post, during his 7 years in Brazil as part of the Dutch occupation of the region. 


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