Augusta Ada King, Lady Lovelace, ,died heavily in debt, addicted to strong drink. She had been the assistant to the mathematical engineer Charles Babbage (the father of the computer).
Anders Celsius, Swedish astronomer and thermometer inventor, was born
Army War College forms in Washington DC
Gerhart Hauptmanns Der rote Hahn, premieres in Berlin
Opera Die Heugierigen Frauen is produced (Munich)
NYs Penn Station opens as worlds largest railway terminal