January 31 » Czechoslav Trade Union Association is founded in Prague.
February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
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 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
Day of death January 31, 1914
The temperature on January 31, 1914 was between 0.8 °C and 7.7 °C and averaged 4.1 °C. There was 7.0 hours of sunshine (78%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 9 » The Phi Beta Sigma fraternity is founded by African-American students at Howard University in Washington D.C., United States.
February 26 » HMHSBritannic, sister to the RMSTitanic, is launched at Harland and Wolff shipyard in Belfast.
April 23 » First baseball game at Wrigley Field, then known as Weeghman Park, in Chicago.
August 26 » World War I: During the retreat from Mons, the British II Corps commanded by General Sir Horace Smith-Dorrien fought a vigorous and successful defensive action at Le Cateau.
September 5 » World War I: First Battle of the Marne begins. Northeast of Paris, the French attack and defeat German forces who are advancing on the capital.
September 26 » The United States Federal Trade Commission is established by the Federal Trade Commission Act.
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/I4709.php : accessed October 6, 2026), "Grietje Boomsma (1897-1914)".
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