The temperature on July 20, 1861 was about 21.5 °C. The air pressure was 0.5 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 56%. Source: KNMI
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
January 21 » American Civil War: Jefferson Davis resigns from the United States Senate.
February 11 » American Civil War: The United States House of Representatives unanimously passes a resolution guaranteeing noninterference with slavery in any state.
May 20 » American Civil War: The state of Kentucky proclaims its neutrality, which will last until September 3 when Confederate forces enter the state. Meanwhile, the State of North Carolina secedes from the Union.
July 25 » American Civil War: The United States Congress passes the Crittenden–Johnson Resolution, stating that the war is being fought to preserve the Union and not to end slavery.
August 19 » First ascent of Weisshorn, fifth highest summit in the Alps.
December 26 » American Civil War: The Trent Affair: Confederate diplomatic envoys James Murray Mason and John Slidell are freed by the United States government, thus heading off a possible war between the United States and the United Kingdom.
Day of death July 31, 1956
The temperature on July 31, 1956 was between 11.4 °C and 15.8 °C and averaged 13.0 °C. There was 3.9 mm of rain during 1.9 hours. There was 3.1 hours of sunshine (20%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 3 » A fire damages the top part of the Eiffel Tower.
July 13 » The Dartmouth workshop is the first conference on artificial intelligence.
July 16 » Ringling Bros. and Barnum & Bailey Circus closes its last "Big Tent" show in Pittsburgh, Pennsylvania; due to changing economics, all subsequent circus shows will be held in arenas.
August 27 » The nuclear power station at Calder Hall in the United Kingdom was connected to the national power grid becoming the world's first commercial nuclear power station to generate electricity on an industrial scale.
October 14 » Dr. B. R. Ambedkar, leader of India's Untouchable caste, converts to Buddhism along with 385,000 of his followers (see Neo-Buddhism).
November 22 » The Summer Olympics, officially known as the games of the XVI Olympiad, are opened in Melbourne, Australia.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P13803.php : accessed February 24, 2026), "Lilla Lawrence Mitchell (1861-1956)".
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