Louis Pasteur observed, " if we could intervene in the antagonism observed between some bacteria, it would offer perhaps the greatest hopes for therapeutics ".

Antibiosis was first described in 1877 in bacteria when Louis Pasteur and Robert Koch observed that an airborne bacillus could inhibit the growth of Bacillus anthracis.

* 1862 – Louis Pasteur and Claude Bernard complete the first pasteurization tests.

Louis Pasteur carried out scientific analysis on paint during this time period as well.

* Louis Pasteur

* Louis Pasteur

* 1822 – Louis Pasteur, French scientist ( d. 1895 )

In the 19th century, when studying the fermentation of sugar to alcohol by yeast, Louis Pasteur came to the conclusion that this fermentation was catalyzed by a vital force contained within the yeast cells called " ferments ", which were thought to function only within living organisms.

Discovery of techniques for killing bacteria using heat, and other microbiological studies by scientists such as Louis Pasteur, contributed to the modern sanitation standards that are ubiquitous in developed nations today.

Working with very limited resources, he became one of the founders of bacteriology, the other major figure being Louis Pasteur.

Semmelweis's work was supported by the discoveries made by Louis Pasteur.

This and other observations of acquired immunity were later exploited by Louis Pasteur in his development of vaccination and his proposed germ theory of disease.

* 1885 – Louis Pasteur successfully tests his vaccine against rabies.

Louis Pasteur (, ; December 27, 1822 – September 28, 1895 ) was a French chemist and microbiologist who was one of the most important founders of medical microbiology.

Louis Pasteur was born on December 27, 1822, in Dole in the Jura region of France, into the family of a poor tanner.

Louis Pasteur was an average student in his early years, but he was gifted in drawing and painting.

Louis Pasteur in his laboratory, painting by Albert Edelfelt | A. Edelfeldt in 1885

Louis Pasteur portrait in his later years

In 1995, the centennial of the death of Louis Pasteur, the New York Times ran an article titled " Pasteur's Deception ".

Although his grandson, Louis Pasteur Vallery-Radot, wrote that Pasteur had only kept from his Catholic background a spiritualism without religious practice, Catholic observers often said Louis Pasteur remained throughout his whole life an ardent Christian, and his son-in-law, in perhaps the most complete biography of Louis Pasteur, writes:

Claude Louis Berthollet ( 9 December 1748 – 6 November 1822 ) was a Savoyard-French chemist who became vice president of the French Senate in 1804.

* 1748 – Claude Louis Berthollet, French chemist ( d. 1822 )

* 1822 – Joseph Louis François Bertrand, French mathematician ( d. 1900 )

* Louis Pasteur ( 1822 – 1895 ), French chemist and microbiologist who invented:

** Joseph Louis François Bertrand, French mathematician ( b. 1822 )

* September 28 – Louis Pasteur, French microbiologist and chemist ( b. 1822 )

* 1822 – Ashley's Hundred leave from St. Louis, setting off a major increase in fur trade.

* December 9 – Claude Louis Berthollet, French chemist ( d. 1822 )

The diorama was invented in 1822 by Louis Daguerre and Charles-Marie Bouton, the latter a former student of the renowned French painter Jacques-Louis David.

Settlement of what became Bellevue began when a fur trading post was built in 1822 by Joshua Pilcher, then president of the Missouri Fur Company based in St. Louis.

Edmond de Goncourt ( May 26, 1822 – July 16, 1896 ), born Edmond Louis Antoine Huot de Goncourt, was a French writer, literary critic, art critic, book publisher and the founder of the Académie Goncourt.

He had a share in the foundation of the libraries of the Louvre, of Fontainebleau, of Compiègne and Saint-Cloud ; under Louis XVIII he became administrator of the king's private libraries, but in 1822 he was deprived of all his offices.

By 1822 Jedediah traveled to St. Louis and responded to an advertisement in the Missouri Gazette placed by Gen. William H. Ashley.

* March 11 — Joseph Louis François Bertrand, French professor and mathematics writer ( born 1822 )

Sir Louis Hypolite Lafontaine, Bart., then Chief Justice of Lower Canada then married Montreal, January 3oth, 1861, the widowed Jane Élisabeth Geneviève Morrison, ( 1822 – 1905 ) daughter of Charles Morrison, on January 30, 1861.

Although not himself a courtier, he was backed at court by Sosthene de la Rochefoucauld and Madame du Cayla, and in 1822 Louis XVIII gave him the title of count and made him formally prime minister.

These include, De la féodalité, des institutions de Saint Louis et de l ' influence de la législation de ce prince ( 1822 ); La Germanie au VIIIe et au IXe siècle, sa conversion au Christianisme, et son introduction dans la société civilisée de l ' Europe occidentale ( 1834 ); Essai sur la formation territoriale et politique de la France depuis la fin du XIe siècle jusqu ' à la fin du XVe ( 1836 ); all of which are rough sketches that mainly outline the subjects.

File: Louis Guymard. jpg | Louis Guéymard ( 1822 – 1880 ) as Robert le Diable, 1857, Metropolitan Museum of Art

The oceanic whitetip shark was first described by naturalist René-Primevère Lesson in his account of Louis Duperrey's 1822 – 1825 world-circling journey on the corvette Coquille.

* Coquille, a corvette used in Louis Duperrey's 1822 – 1825 circumnavigation of the world

* 1250 – Seventh Crusade: Ayyubids of Egypt capture King Louis IX of France in the Battle of Fariskur.

* 1706 – Louis de Cahusac, French playwright and librettist, and Freemason ( d. 1759 )

* 1902 – Louis Beel, Dutch politician, Prime Minister of the Netherlands ( d. 1977 )

* 1904 – The Louisiana Purchase Exposition World's Fair opens in St. Louis, Missouri.

* 1664 – Fran &# 231 ; ois Louis, Prince of Conti, French general ( d. 1709 )

* 1979 – A Provisional Irish Republican Army bomb kills British World War II admiral Louis Mountbatten and three others while they are boating on holiday in Sligo, Republic of Ireland.

* 1644 – Louise de La Vallière, French mistress of Louis XIV of France ( d. 1710 )

* 1962 – Louis Lipps, American football player

* 1792 – King Louis XVI of France is formally arrested by the National Tribunal, and declared an enemy of the people.

* 1717 – Louis François, Prince of Conti ( d. 1776 )

* 1764 – Louis Baraguey d ' Hilliers, French general ( d. 1816 )

* 1920 – Louis Pauwels, French journalist and writer ( d. 1997 )

* 881 – Battle of Saucourt-en-Vimeu: Louis III of France defeats the Vikings, an event celebrated in the poem Ludwigslied.

* 1899 – Louis Chiron, Monegasque race car driver ( d. 1979 )

In the Battle of Abensberg on 19 – 20 April 1809, Napoleon gained a significant victory over the Austrians under Archduke Louis of Austria and General Johann von Hiller.

* 1779 – Louis de Freycinet, French explorer ( d. 1842 )

* 1903 – Louis Leakey, Kenyan-English archaeologist ( d. 1972 )

* 1978 – Louis Saha, French footballer

* 778 – Louis the Pious ( d. 840 )

* 1672 – Franco-Dutch War: Louis XIV of France invades the Netherlands.

* 1892 – Louis de Broglie, French physicist, Nobel Prize laureate ( d. 1987 )

* 1682 – Louis, Dauphin of France, Duke of Burgundy ( d. 1712 )

* 1624 – The president of Louis XIII of France's royal council is arrested, leaving Cardinal Richelieu in the role of the King's principal minister.

* 1839 – The French government announces that Louis Daguerre's photographic process is a gift " free to the world ".

* 1743 – Madame du Barry, French mistress of Louis XV of France ( d. 1793 )