March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
May 8 » The Irish Literary Theatre in Dublin produced its first play.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
September 23 » The American Asiatic Squadron destroys a Filipino battery at the Battle of Olongapo.
November 28 » The Second Boer War: a British column is engaged by Boer forces at the Battle of Modder River; although the Boers withdraw, the British suffer heavy casualties.
Day of death January 15, 1900
The temperature on January 15, 1900 was about -4.8 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 79%. Source: KNMI
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I207327.php : accessed January 16, 2026), "Theodorus Petrus Bernardus Gijzen (1899-1900)".
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