Back 1861 en science French 1861 במדע HE 1861 a tudományban Hungarian Науката во 1861 година Macedonian Vitskap i 1861 NN Vitenskapsåret 1861 NB 1861 na ciência Portuguese 1861 год в науке Russian Vetenskapsåret 1861 Swedish 1861 nî kho-ha̍k ZH-MIN-NAN
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| 1861 in science |
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| Fields |
| Technology |
| Social sciences |
| Paleontology |
| Extraterrestrial environment |
| Terrestrial environment |
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The year 1861 in science and technology involved some significant events, listed below.