- Sep 5 Southern blacks led by Pap Singleton settle in Kansas
- Sep 11 Rijkslandbouwhoge school opens in Wageningen
- Sep 11 Russo-Turkish War: Third Russian assault on Plevna, Ottoman Empire (now Pleven, Bulgaria), aided by Romanian forces mostly fails, although the Romanians take Grivitsa; up to 20,000 Russian and 6,000 Turk casualties
- Sep 20 Chase National Bank opens in NYC (later merges into Chase Manhattan)
Virchow's Anti-Darwinian Speech
Sep 22 Rudolf Virchow delivers an anti-Darwinian speech to the Congress of German Naturalists and Physicians in Munich, where he speaks against the teaching of the theory of evolution in schools
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