Abstract
Perhaps the most significant scientific works published about Spanish-America during the entire era 1800–1830 were the botanical and zoological findings of the German scientist, Alexander von Humboldt. He had traveled in the Spanish colonies from 1799 to 1804. Humboldt has been acclaimed as the greatest naturalist that the world had seen since Aristotle and as the foremost man in Europe during his lifetime with the exception of Napoleon. He had taken a scientific education in several German universities and had once held an appointment in Berlin as a mining official for the Prussian government. On his way back to Europe in 1804 at the conclusion of his scientific survey in Spanish-America, he stopped in the United States to visit President Thomas Jefferson who asked him to fix the new boundaries of the United States following the purchase of Louisiana. This side trip probably saved Humboldt’s life because the ship which sailed from South America with his specimens was lost at sea.

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