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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
Day of death August 19, 1900
The temperature on August 19, 1900 was about 18.6 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 98%. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Rob Prins, "Family tree Prins", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_prins/I1096.php : accessed February 14, 2026), "Johanna JONKER (1897-1900)".
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