January 13 » Émile Zola's J'accuse…! exposes the Dreyfus affair.
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
June 17 » The United States Navy Hospital Corps is established.
August 13 » Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
September 21 » Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
Day of death July 13, 1899
The temperature on July 13, 1899 was about 17.9 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 84%. Source: KNMI
February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 6 » Bayer registers "Aspirin" as a trademark.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I16066.php : accessed October 18, 2026), "Klaas Nicolai (1898-1899)".
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