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Alexander von Humboldt - Wikipedia, the free encyclopedia |
 | | Friedrich Heinrich Alexander, Baron von Humboldt, (September 14, 1769, Berlin–May 6, 1859, Berlin), was a German naturalist and explorer, and the younger brother of the Prussian minister, philosopher, and linguist Wilhelm von Humboldt. |
 | | At Callao, Humboldt observed the transit of Mercury on November 9, and studied the fertilizing properties of guano, the introduction of which into Europe was mainly due to his writings. |
 | | Humboldt may justly be regarded as having in this memorable expedition laid the foundation in their larger bearings of the sciences of physical geography and meteorology. |
| en.wikipedia.org /wiki/Alexander_von_Humboldt (3623 words) |
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