April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
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.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
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.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
Day of death March 11, 1898
The temperature on March 11, 1898 was about 3.6 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 90%. Source: KNMI
February 15 » The battleship USSMaine explodes and sinks in Havana harbor in Cuba, killing 274. This event leads the United States to declare war on Spain.
May 8 » The first games of the Italian football league system are played.
June 27 » The first solo circumnavigation of the globe is completed by Joshua Slocum from Briar Island, Nova Scotia.
July 1 » Spanish–American War: The Battle of San Juan Hill is fought in Santiago de Cuba, Cuba.
August 13 » Spanish–American War: Spanish and American forces engage in a mock battle for Manila, after which the Spanish commander surrendered in order to keep the city out of Filipino rebel hands.
November 5 » Negrese nationalists revolt against Spanish rule and establish the short-lived Republic of Negros.
When copying data from this family tree, please include a reference to the origin: Jaco Oversluizen, "Family tree Oversluizen(Lanser)-van der Beek - de Waard-van den Hoek", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oversluizen/I77.php : accessed February 16, 2026), "Hendrika van Helden (1897-1898)".
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