January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
November 2 » The Boers begin their 118-day siege of British-held Ladysmith during the Second Boer War.
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 10, 1900
The temperature on January 10, 1900 was about 4.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 90%. Source: KNMI
February 23 » Second Boer War: During the Battle of the Tugela Heights, the first British attempt to take Hart's Hill fails.
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.
June 5 » Second Boer War: British soldiers take Pretoria.
June 17 » Boxer Rebellion: Western Allied and Japanese forces capture the Taku Forts in Tianjin, China.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
December 18 » The Upper Ferntree Gully to Gembrook, Victoria Narrow-gauge (2ft 6 in or 762mm) Railway (now the Puffing Billy Railway) in Victoria, Australia is opened for traffic.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I5502.php : accessed February 1, 2026), "Berendina Boelen (1899-1900)".
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