The United States 1804 Alexander von Humboldt

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1804 map of louisiana territory. jefferson , cabinet sought information humboldt when visited washington, d.c., spain s territory in mexico, bordering u.s.


leaving cuba, humboldt decided take unplanned short visit united states. knowing current u.s. president, thomas jefferson, himself scientist, humboldt wrote him saying in united states. jefferson warmly replied, inviting him visit white house in nation s new capital. in letter humboldt had gained jefferson s interest mentioning had discovered mammoth teeth near equator. jefferson had written believed mammoths had never lived far south. humboldt had hinted @ knowledge of new spain.


arriving in philadelphia, center of learning in u.s., humboldt met of major scientific figures of era, including chemist , anatomist caspar wistar, pushed compulsory smallpox vaccination, , botanist benjamin smith barton, physician benjamin rush, signer of declaration of independence, wished hear cinchona bark south american tree, cured fevers. humboldt later published treatise in english on cinchona.


after arriving in washington d.c, humboldt held numerous intense discussions jefferson on both scientific matters , year-long stay in new spain. jefferson had concluded louisiana purchase, placed new spain on southwest border of united states. spanish minister in washington, d.c. had declined furnish u.s. government information spanish territories. humboldt able supply jefferson latest information on population, trade agriculture , military of new spain. information later basis essay on political kingdom of new spain (1810). jefferson unsure of border of newly-purchased louisiana precisely, , humboldt wrote him two-page report on matter. jefferson later refer humboldt scientific man of age . albert gallatin, secretary of treasury said of humboldt, delighted , swallowed more information of various kinds in less 2 hours had 2 years past in had read or heard. gallatin, in turn, supplied humboldt information sought on united states.


after 6 weeks, humboldt set sail europe mouth of delaware , landed @ bordeaux on 3 august 1804.








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