March 10 » French Huguenot Jean Calas, who had been wrongly convicted of killing his son, dies after being tortured by authorities; the event inspired Voltaire to begin a campaign for religious tolerance and legal reform.
May 22 » Sweden and Prussia sign the Treaty of Hamburg.
May 22 » Trevi Fountain is officially completed and inaugurated in Rome.
June 6 » In the Seven Years' War, British forces begin the Siege of Havana and temporarily capture the city.
June 24 » Battle of Wilhelmsthal: The British-Hanoverian army of Ferdinand of Brunswick defeats French forces in Westphalia.
July 17 » Former emperor Peter III of Russia is murdered.
Day of death December 4, 1818
The temperature on December 4, 1818 was about 4.0 °C. Wind direction mainly south east. Weather type: half bewolkt helder. Source: KNMI
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De Republiek der Verenigde Nederlanden werd in 1794-1795 door de Fransen veroverd onder leiding van bevelhebber Charles Pichegru (geholpen door de Nederlander Herman Willem Daendels); de verovering werd vergemakkelijkt door het dichtvriezen van de Waterlinie; Willem V moest op 18 januari 1795 uitwijken naar Engeland (en van daaruit in 1801 naar Duitsland); de patriotten namen de macht over van de aristocratische regenten en proclameerden de Bataafsche Republiek; op 16 mei 1795 werd het Haags Verdrag gesloten, waarmee ons land een vazalstaat werd van Frankrijk; in 3.1796 kwam er een Nationale Vergadering; in 1798 pleegde Daendels een staatsgreep, die de unitarissen aan de macht bracht; er kwam een nieuwe grondwet, die een Vertegenwoordigend Lichaam (met een Eerste en Tweede Kamer) instelde en als regering een Directoire; in 1799 sloeg Daendels bij Castricum een Brits-Russische invasie af; in 1801 kwam er een nieuwe grondwet; bij de Vrede van Amiens (1802) kreeg ons land van Engeland zijn koloniën terug (behalve Ceylon); na de grondwetswijziging van 1805 kwam er een raadpensionaris als eenhoofdig gezag, namelijk Rutger Jan Schimmelpenninck (van 31 oktober 1761 tot 25 maart 1825).
January 2 » The British Institution of Civil Engineers is founded by a group of six engineers; Thomas Telford would later become its first president.
January 15 » A paper by David Brewster is read to the Royal Society, belatedly announcing his discovery of what we now call the biaxial class of doubly-refracting crystals. On the same day, Augustin-Jean Fresnel signs a "supplement" (submitted four days later) on reflection of polarized light.
March 30 » Physicist Augustin Fresnel reads a memoir on optical rotation to the French Academy of Sciences, reporting that when polarized light is "depolarized" by a Fresnel rhomb, its properties are preserved in any subsequent passage through an optically-rotating crystal or liquid.
April 5 » In the Battle of Maipú, Chile's independence movement, led by Bernardo O'Higgins and José de San Martín, win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead.
April 20 » The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
December 13 » Cyril VI of Constantinople resigns from his position as Ecumenical Patriarch.
When copying data from this family tree, please include a reference to the origin: Robert Postma, "Family tree Postma-Heemskerk", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-postma-heemskerk/I524853.php : accessed May 29, 2024), "Cornelis Mulder (1762-1818)".
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