January 31 » Czechoslav Trade Union Association is founded in Prague.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of death March 16, 1901
The temperature on March 16, 1901 was between 6.0 °C and 10.0 °C and averaged 7.4 °C. There was 1.0 hours of sunshine (8%). Source: KNMI
January 10 » The first great Texas oil gusher is discovered at Spindletop in Beaumont, Texas.
February 20 » The legislature of Hawaii Territory convenes for the first time.
June 17 » The College Board introduces its first standardized test, the forerunner to the SAT.
September 17 » Second Boer War: A Boer column defeats a British force at the Battle of Blood River Poort.
September 17 » Second Boer War: Boers capture a squadron of the 17th Lancers at the Battle of Elands River.
December 12 » Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
When copying data from this family tree, please include a reference to the origin: Vera Develing, "Family tree Develing", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-develing/I18.php : accessed March 12, 2026), "Petronella Margaretha Develing (1897-1901)".
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