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.
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.
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.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
December 30 » The British Colony of Natal annexes Zululand.
Day of death February 18, 1971
The temperature on February 18, 1971 was between 1.8 °C and 6.2 °C and averaged 4.3 °C. There was 6.4 mm of rain during 5.1 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
February 27 » Doctors in the first Dutch abortion clinic (the Mildredhuis in Arnhem) start performing artificially-induced abortions.
September 4 » Alaska Airlines Flight 1866 crashes near Juneau, Alaska, killing all 111 people on board.
September 29 » Oman joins the Arab League.
November 15 » Intel releases the world's first commercial single-chip microprocessor, the 4004.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: E. Baks, "Family tree Baks", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-baks/I2977.php : accessed March 2, 2026), "Arie Meiresonne (1897-1971)".
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