- Alfred Edmund Brehm joins Johann Wilhelm von Müller on an expedition to Egypt, the Sudan, and the Sinai peninsula.
- Death of Johann Conrad Susemihl
- Death of Giuseppe Géné
- René Primevère Lesson receives the Legion of Honour
- Jean Louis Cabanis erects the genus Geothlypis in Ornithologische Notizen. Archiv für Naturgeschichte
- William Henry Edwards publishes A Voyage Up the River Amazon, with a residency at Pará
Ongoing events
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