The temperature on August 4, 1861 was about 20.3 °C. There was 0.1 mm of rain. The air pressure was 13 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 73%. 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).
February 4 » American Civil War: In Montgomery, Alabama, delegates from six break-away U.S. states meet and form the Confederate States of America.
March 17 » The Kingdom of Italy is proclaimed.
April 17 » The state of Virginia's secession convention votes to secede from the United States, later becoming the eighth state to join the Confederate States of America.
June 3 » American Civil War: Battle of Philippi (also called the Philippi Races): Union forces rout Confederate troops in Barbour County, Virginia, now West Virginia.
October 1 » Mrs Beeton's Book of Household Management is published, going on to sell 60,000 copies in its first year and remaining in print until the present day
November 20 » American Civil War: A secession ordinance is filed by Kentucky's Confederate government.
Day of death June 30, 1904
The temperature on June 30, 1904 was between 5.1 °C and 22.6 °C and averaged 14.9 °C. There was 14.0 hours of sunshine (84%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
February 22 » The United Kingdom sells a meteorological station on the South Orkney Islands to Argentina; the islands are subsequently claimed by the United Kingdom in 1908.
May 9 » The steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100mph (160km/h).
June 15 » A fire aboard the steamboat SSGeneral Slocum in New York City's East River kills 1,000.
October 27 » The first underground New York City Subway line opens, later designated as the IRT Broadway–Seventh Avenue Line.
November 16 » English engineer John Ambrose Fleming receives a patent for the thermionic valve (vacuum tube).
December 3 » The Jovian moon Himalia is discovered by Charles Dillon Perrine at California's Lick Observatory.
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/I14388.php : accessed October 24, 2026), "Roel Merkus (1861-1904)".
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