September 23

The Capuchin friar Padre Pio died at the friary of San Giovanni Rotondo in southern Italy.

At the Berlin Observatory Johann Galle found the planet Neptune within a degree of the position predicted from the motion of Uranus, the first planet located by mathematical calculation.

Sigmund Freud, the Viennese physician who founded psychoanalysis, died in London, where he had settled the previous year after leaving Austria.