Dashed left edge = started before January 1799 ·
Dashed right edge = ongoing beyond January 1799
Events in January 1799 8
1718 – 1799Maria Gaetana Agnesi (1718-1799)Died 9 January 1799, aged 80Italian mathematician whose Instituzioni analitiche was one of the first textbooks to cover both differential and integral calculus. The curve known as the witch of Agnesi is named after her. She later gave up mathematics to devote herself to charity in Milan.
1718 – 1799Maria Gaetana Agnesi (1718-1799)Died 9 January 1799, aged 80Italian mathematician whose Instituzioni analitiche was one of the first textbooks to cover both differential and integral calculus. The curve known as the witch of Agnesi is named after her. She later gave up mathematics to devote herself to charity in Milan.
1740 – 1799Horace-Bénédict de Saussure (1740-1799)Died 22 January 1799, aged 58Genevan physicist and geologist who pioneered the scientific study of the Alps. In 1787 he made the third ascent of Mont Blanc, taking measurements at the summit. He is often regarded as a founder of alpinism.
1740 – 1799Horace-Bénédict de Saussure (1740-1799)Died 22 January 1799, aged 58Genevan physicist and geologist who pioneered the scientific study of the Alps. In 1787 he made the third ascent of Mont Blanc, taking measurements at the summit. He is often regarded as a founder of alpinism.
1799Britain introduces income taxPitt's graduated tax to fund the war with FranceWilliam Pitt the Younger brought in Britain's first general income tax to pay for the French Revolutionary Wars. It was graduated, charging up to two shillings in the pound on incomes over £200. It was repealed in 1802 and later reintroduced.
1799Britain introduces income taxPitt's graduated tax to fund the war with FranceWilliam Pitt the Younger brought in Britain's first general income tax to pay for the French Revolutionary Wars. It was graduated, charging up to two shillings in the pound on incomes over £200. It was repealed in 1802 and later reintroduced.
1799Parthenopean RepublicShort-lived French-backed republic in NaplesAfter French troops took Naples, local republicans proclaimed the Parthenopean Republic and the Bourbon court fled to Sicily. Cardinal Fabrizio Ruffo's royalist Sanfedisti army retook the city in June. Many leading republicans were then executed.
1799Parthenopean RepublicShort-lived French-backed republic in NaplesAfter French troops took Naples, local republicans proclaimed the Parthenopean Republic and the Bourbon court fled to Sicily. Cardinal Fabrizio Ruffo's royalist Sanfedisti army retook the city in June. Many leading republicans were then executed.