The temperature on December 31, 1871 was about 5.5 °C. The air pressure was 7 kgf/m2 and came mainly from the west-northwest. The atmospheric humidity was 79%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
In The Netherlands , there was from January 4, 1871 to July 6, 1872 the cabinet Thorbecke III, with Mr. J.R. Thorbecke (liberaal) as prime minister.
March 21 » Journalist Henry Morton Stanley begins his trek to find the missionary and explorer David Livingstone.
March 26 » The elections of Commune council of the Paris Commune are held.
May 21 » French troops invade the Paris Commune and engage its residents in street fighting. By the close of "Bloody Week", some 20,000 communards have been killed and 38,000 arrested.
July 2 » Victor Emmanuel II of Italy enters Rome after having conquered it from the Papal States.
July 30 » The Staten Island Ferry Westfield's boiler explodes, killing over 85 people.
October 12 » The British in India enact the Criminal Tribes Act, naming many local communities "Criminal Tribes".
Day of marriage June 11, 1900
The temperature on June 11, 1900 was about 21.1 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 59%. Source: KNMI
January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
June 5 » Second Boer War: British soldiers take Pretoria.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
June 20 » Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing, China.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
Day of death October 21, 1949
The temperature on October 21, 1949 was between 7.7 °C and 15.9 °C and averaged 12.0 °C. There was 6.8 mm of rain during 1.6 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
When copying data from this family tree, please include a reference to the origin: Dirk Kalksma, "Family tree Kalksma", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kalksma/I402.php : accessed March 13, 2026), "Antje "Anna" van der Werf (1871-1949)".
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