It was given explicit statement by Robert Leslie Ellis in " On the Foundations of the Theory of Probabilities " read on 14 February 1842, ( and much later again in " Remarks on the Fundamental Principles of the Theory of Probabilities ").

Based on this work, the first fuel cell was demonstrated by Welsh scientist and barrister Sir William Robert Grove in the February 1839 edition of the Philosophical Magazine and Journal of Science and later sketched, in 1842, in the same journal.

In practice, the transfer did not take effect until 24 February 1836 when Major-General George Middlemore ( 1836 – 1842 ), the first governor appointed by the British government, arrived with 91st Regiment troops.

* February 21 – Osborne Reynolds, Irish physicist ( b. 1842 ).

* February 26 – C. W. Alcock, English footballer, journalist, and football promoter ( b. 1842 )

* February 14 – Walenty Wańkowicz, a Polish painter ( d. 1842 )

From November 1840 to February 1842 she was in and out of professional care, her condition waxing and waning.

Julian Karol Sochocki (, ; February 2, 1842, Warsaw, Congress Poland, Russian Empire – December 14, 1927, Leningrad, Soviet Union ) was a Polish mathematician.

Marius Sophus Lie ( Lee ) ( 17 December 1842 – 18 February 1899 ) was a Norwegian mathematician.

After its original formation in 1842 was declared unconstitutional, Putnam County was firmly established February 11, 1854 when Richard Fielding Cooke's bill, with amendments, cleared the Tennessee House.

Putnam County was first established on 2 February 1842, when the Twenty-fourth Tennessee General Assembly enacted a measure creating Putnam County from portions of Jackson, Overton, Fentress, and White counties.

* Tabasco declared its separation from Mexico in February 1841, in protest against centralism and the imposed sanctions by centralist president Anastasio Bustamante, it rejoined December 1842.

Custer married Elizabeth Clift Bacon ( 1842 – 1933 ) ( whom he first saw when he was ten years old ) on February 9, 1864.

Auburn would itself be set off and incorporated on February 24, 1842.

Castleton Township was formed on February 16, 1842.

The land was part of Barry Township and then Hastings Township until February 16, 1842 when the land became Section 36 of the newly formed Castleton Township.

The township was organized on February 16, 1842.

Township 7 was set off as Keene Township on February 16, 1842.

The Missouri General Assembly had voted to establish an asylum for the insane in Fulton ( February 26, 1847 ), the first mental health facility west of the Mississippi ; the General Assembly agreed ( February 28, 1851 ) to establish a school for the education of the deaf in Fulton ; in 1842 the Presbyterian Church had opened a female seminary later known as Synodical College ; in the fall of 1851 the Presbyterian Church established the all-male Fulton College, now known as Westminster College ; and Fulton was the seat of county government.

* On the 10 February 1842 Barry was elected an Royal Academician of the Royal Academy, his diploma work being a drawing of the south front of the Travellers Club.

A feeder from the River Frome to the summit level was completed in August 1842, and the canal opened in stages as it was completed, with extensions to Canon Frome wharf in January 1843, Whithington wharf in February 1844, and finally to Hereford basin on 22 May 1845.

Sidney Lanier ( February 3, 1842 – September 7, 1881 ) was an American musician and poet.

Sidney Lanier was born February 3, 1842, in Macon, Georgia, to parents Robert Sampson Lanier and Mary Jane Anderson ; he was mostly of English ancestry.

* February 10 – Charles Collette, composer and actor ( b. 1842 )

* February 17 – AB de Villiers, South African Cricketer

* February 11 – A combined French and Indian force, commanded by Captain Nicholas Antoine Coulon de Villiers, attacks British troops at Grand-Pré, Nova Scotia.

Back in London by February 1671, Churchill's handsome features and manner – described by Lord Chesterfield as " irresistible to either man or woman " – had soon attracted the ravenous attentions of one of the King's most noteworthy mistresses, Barbara Villiers, Duchess of Cleveland.

In May, with help from George Villiers, 1st Duke of Buckingham, Montagu was elevated to the House of Lords, receiving his father's barony of Kimbolton and being styled Viscount Mandeville as a courtesy title, since his father had been created earl of Manchester in February when Parliament convened.

* At Grand Pre, Nova Scotia, a surprise mid-winter attack is launched about three o ' clock on the morning of 11 February 1747 on Col. Arthur Noble's detachment of British troops from Massachusetts, by a French and Indian force under Nicholas Antoine Coulon de Villiers.

Anne Lennard, Countess of Sussex ( 25 February 1661-2 – 16 May 1721-2 ), formerly Lady Anne Palmer, alias Fitzroy, was the eldest daughter of Barbara Palmer née Villiers, 1st Duchess of Cleveland, and most likely Charles II of England or Philip Stanhope, 2nd Earl of Chesterfield.

Charlotte Lee, Countess of Lichfield ( 5 September 1664 – 17 February 1718 ), formerly Lady Charlotte Fitzroy, was the illegitimate daughter of King Charles II of England by one of his most notorious mistresses, Barbara Villiers, 1st Duchess of Cleveland

Howard married secondly, about February 1650, Barbara, daughter of Sir Edward Villiers, knt., and widow of the Hon.

Edward George Villiers Stanley, 17th Earl of Derby KG, GCB, GCVO, TD, PC, KGStJ, JP ( 4 April 1865 – 4 February 1948 ), known as Lord Stanley from 1893 to 1908, was a British soldier, Conservative politician, diplomat and racehorse owner.

Villiers Somerset ( 12 February 1803 – 3 February 1855 ), married Frances Dorothy Ley on 8 August 1844 and had issue

His first wife was Anne Villiers ( before 1633-30 November 1688 ), daughter of Sir Edward Villiers and his wife Lady Frances Howard, daughter of the 2nd Earl of Suffolk, whom he married on 1 February 1678.

Algernon Capell married Mary Bentinck, daughter of William Bentinck, 1st Earl of Portland and Anne Villiers on 28 February 1698.

John Villiers Farrow, CBE KGCHS ( 10 February 190427 January 1963 ) was an Australian-born American film director, producer and screenwriter.

Edward Hyde Villiers, 5th Earl of Clarendon PC ( 11 February 1846 – 2 October 1914 ), styled Lord Hyde between 1846 and 1870, was a British Liberal Unionist politician.

George Francis Child Villiers, 9th Earl of Jersey ( 15 February 1910 – 9 August 1998 ), was an English peer, the son of George Child Villiers, 8th Earl of Jersey.

The final issue of the Englishman, No. 57 for February 15, ran to some length and was printed as a separate pamphlet, entitled The Englishman: Being the Close of the Paper So-called.

After Thompson came to London to live, he received a letter from Katie, which was dated February 8, 1897.

The queen agreed on December 17, a warrant was signed on January 27, and the Exchequer paid Quiney his expenses on February 27, 1598/9.

Blackman was to be in New York by February 2, because they were sailing at 12:01 next morning.

February's volume was 1 per cent above January's for the first pickup since last October, although it's still 1.5 per cent off from February 1960.

When I looked up the actual date of his birth and found it to be March 15th, I realized that Roy was born under the right zodiacal sign for a watercolorist: the water sign of Pisces ( February 18 thru March 20 ).

This medication was continued until February, 1958.

In 1932 Dorset received its own exchange, which made business easier for the Manchester office, but it was not until February 1953 that area service was extended to include Manchester and Dorset.

The latter now furnishes the area with electricity distributed from a modern sub-station at Manchester Depot which was put into operation February 19, 1930 and was improved in January 1942 by the installation of larger transformers.

This trade was subject to a tariff of 7.5 per cent after February 1835, but much was smuggled into Assiniboia with the result that the duty was reduced by 1841 to 4 per cent on the initiative of the London committee.

It was a vivid, sharp February morning that Johnnie first made his appearance in my back yard, bringing some stuff Dad had ordered.

Abraham Lincoln ( February 12, 1809 – April 15, 1865 ) was the 16th President of the United States, serving from March 1861 until his assassination in April 1865.

Abraham Lincoln was born February 12, 1809, the second child of Thomas Lincoln and Nancy Lincoln ( née Hanks ), in a one-room log cabin on the Sinking Spring Farm in Hardin County, Kentucky ( now LaRue County ).

" Willie " Lincoln was born on December 21, 1850, and died on February 20, 1862.

On February 23, 1861, he arrived in disguise in Washington, D. C., which was placed under substantial military guard.

The 84th Academy Awards, honoring films in 2011, was held at the Dolby Theatre on February 26, 2012.

Gen. Beauregard arrived at Johnston's headquarters at Bowling Green on February 4, 1862 and was given overall command of Polk's force at the western end of Johnston's line at Columbus, Kentucky.

Andy Warhol ( August 6, 1928 – February 22, 1987 ) was an American artist who was a leading figure in the visual art movement known as pop art.

April was the second month of the Roman calendar, before January and February were added by King Numa Pompilius about 700 BC.

( Despite common belief, he did not take a day from February ; see the debunked theory on month lengths ) According to a Senatus consultum quoted by Macrobius, he chose this month because it was the time of several of his great triumphs, including the conquest of Egypt.