Portal:History of science/Selected anniversaries/April 19
- 1567 - Death of Michael Stifel, German mathematician (b. 1487)
- 1739 - Death of Nicholas Saunderson, English mathematician
- 1770 - Captain James Cook sights Australia
- 1831 - Death of Johann Gottlieb Friedrich von Bohnenberger, German mathematician (b. 1765)
- 1854 - Death of Robert Jameson, Scottish naturalist (b. 1774)
- 1874 - Birth of Ernst Rüdin, Swiss psychiatrist, geneticist, and eugenicist (d. 1952)
- 1882 - Death of Charles Darwin, English biologist (b. 1809)
- 1883 - Birth of Richard von Mises, Austrian-born mathematician (d. 1953)
- 1892 - Charles Duryea claims to have driven the first automobile in the United States, in Springfield, Massachusetts
- 1906 - Death of Pierre Curie, French physicist, Nobel Prize laureate (b. 1859)
- 1912 - Birth of Glenn Seaborg, American chemist, Nobel Prize laureate (d. 1999)
- 1914 - Death of Charles Sanders Peirce, American philosopher and mathematician (b. 1839)
- 2004 - Death of John Maynard Smith, English biologist (b. 1920)