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Sir Jonas Moore, FRS (1617–1679) was an English mathematician,
surveyor Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. A land surveying professional is ca ...
, ordnance officer, and patron of astronomy. He took part in two of the most ambitious English civil engineering projects of the 17th century: draining the Great Level of the Fens and building the Mole at Tangier. In later life, his wealth and influence as Surveyor-General of the Ordnance enabled him to become a patron and driving force behind the establishment of the
Royal Observatory, Greenwich The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in ...
.


Origins and early career

Jonas Moore was born at Higher White Lee, in Higham, which is in Pendle, Lancashire on 8 February 1617, a son of a yeoman farmer, John Moore. His older brother, also John, had allegedly been bewitched to death in about 1610 by Elizabeth Sothernes (Old Demdike), the most notorious of the Pendle witches. There is no record of Jonas's education but it is likely that he attended Burnley Grammar School, which was only three miles from his home. In 1637, he was appointed clerk to Thomas Burwell, Vicar-General of the diocese of Durham, a job requiring competence in the use of legal Latin. He married Eleanor Wren on 8 April 1638 in Durham, and subsequently raised a family of a son and two daughters. During the English Civil War, Parliament sequestered church revenues in October 1642, and Moore with no income had to return to Lancashire.


Mathematician and surveyor

Records of Moore's life during the next ten years are sketchy, but by 1650 he was an established mathematics teacher and published his first book, ''Moores Arithmetick''. In 1674, Sir Jonas Moore first used the abbreviated notation 'cos' for the trigonometric term cosine. He went on that year to be appointed Surveyor to the Fen drainage Company of
William Russell, 5th Earl of Bedford William Russell, 1st Duke of Bedford KG PC (August 1616 – 7 September 1700) was an English nobleman and politician who sat in the House of Commons from 1640 until 1641 when he inherited his Peerage as 5th Earl of Bedford and removed to th ...
, and worked on draining the Fens for the next seven years. In 1658, Moore was able to produce a 16-sheet ''Mapp of the Great Levell of the Fens'', which provided an effective means of displaying the Company's achievements in altering the Fenland landscape of
East Anglia East Anglia is an area in the East of England, often defined as including the counties of Norfolk, Suffolk and Cambridgeshire. The name derives from the Anglo-Saxon kingdom of the East Angles, a people whose name originated in Anglia, in ...
. The scale of the map (about two inches to the mile) was not to be bettered until the late 19th century. In the early 1660s, Moore worked mainly as a surveyor, mapping the River Thames from "''Westminster to the sea''" in 1662, his first commission from a government body. From 1663,
James, Duke of York James VII and II (14 October 1633 16 September 1701) was King of England and King of Ireland as James II, and King of Scotland as James VII from the death of his elder brother, Charles II, on 6 February 1685. He was deposed in the Glorious Re ...
became Moore's chief patron. In June, Moore visited Tangier (an English possession from 1661 to 1684) as part of a team to design a stone pier. On his return, he prepared a map with the title ''A Mapp of the Citty of Tanger with Straits of Gibraltar. Described by Jonas Moore Surveyor to his Royall Highness the Duke of York''. When it was completed in March 1664,
Samuel Pepys Samuel Pepys (; 23 February 1633 – 26 May 1703) was an English diarist and naval administrator. He served as administrator of the Royal Navy and Member of Parliament and is most famous for the diary he kept for a decade. Pepys had no mariti ...
, an active member of the Tangiers Committee, was impressed with the map "which is very pleasant, and I purpose to have it finely set out and hung up."


Ordnance officer

With the patronage of the King's brother, Moore found a place as a member of the Ordnance Office. He was appointed Assistant Surveyor of the Ordnance on 19 June 1665 as full deputy to Francis Nicholls, who had been Surveyor since 1660.Willmoth, p. 139. Moore became Surveyor-General of the Ordnance after the death of Nicholls on 28 July 1669. The Surveyor's duties were not confined to land surveying; rather the main duty was to ensure availability of adequate stores, particularly guns and ammunition. During the Third Anglo-Dutch War, Moore met
Prince Rupert Prince Rupert of the Rhine, Duke of Cumberland, (17 December 1619 (O.S.) / 27 December (N.S.) – 29 November 1682 (O.S.)) was an English army officer, admiral, scientist and colonial governor. He first came to prominence as a Royalist cavalr ...
at the Nore with 16 vessels loaded with powder and shot. He received his knighthood on 28 January 1673, probably as a reward for his duties during the first year of the Third Dutch War. With the end of the war in 1674, Moore was able to pursue his interest in astronomy and attempted to gain support from the Royal Society for an observatory at Chelsea College. Moore was elected to the Royal Society on 3 December 1674, but the proposal for an observatory at Chelsea came to nothing. He continued as an active member, and in May 1676 he was appointed a Vice-President of the Royal Society. When Charles II appointed John Flamsteed his "''astronomical observator''" on 4 March 1675, Flamsteed had already enjoyed Moore's patronage since 1670, when Moore presented him with a Towneley micrometer. The Ordnance Office was responsible for the building of the Royal Observatory at Greenwich, which was completed in June 1676. Moore provided much of the Observatory's foundation equipment including the two "Great Clocks" by Thomas Tompion, out of his own pocket.


Death and after

Towards the end of his life, Moore took a great interest in the Royal Mathematical School at Christ's Hospital in London and he was made a governor in December 1676. In 1677, Moore began to write a book, to be called ''A New Systeme of the Mathematicks'', with the purpose of defining a mathematical course suitable for the school. It was unfinished when Moore died on 27 August 1679. He was succeeded as Surveyor General of the Ordnance by his only son, also Jonas. Jonas junior died in 1682 and so it was the husbands of Moore's two daughters, rather than the son, who undertook the publication of the "''New Systeme''", which with the final parts being written by John Flamsteed and Edmond Halley, was completed in 1681. Despite his family's alleged adverse involvement with the Pendle Witches, he was one of the sponsors of a book by Dr John Webster entitled ''The Displaying of Supposed Witchcraft'', which exposed the fallacies of the belief in witchcraft and played a large part in the cessation of prosecutions for witchcraft. Both Sir Jonas Moore and his son were buried in the Church of St Peter ad Vincula in the Tower of London.


Contemporaries

John Aubrey's biography of Moore, written a year or two after his death, characterised him as "a good mathematician and a good fellowe", that is a man given to drink every day wine with company. Among such company would be Samuel Pepys, who recorded one such session in the Rhenish wine house on 23 May 1661 "...and there came Jonas Moore, the mathematician, to us, and there he did by discourse make us fully believe that England and France were once the same continent, by very good arguments, and spoke very many things, not so much to prove the Scripture false as that the time therein is not well computed nor understood." Only a casual acquaintance in the 1660s, Pepys counted him "my Worthy Friend" when both were governors of the Mathematics School. Two of Moore's friends, Sir Christopher Wren and
Robert Hooke Robert Hooke FRS (; 18 July 16353 March 1703) was an English polymath active as a scientist, natural philosopher and architect, who is credited to be one of two scientists to discover microorganisms in 1665 using a compound microscope that ...
, were also associated with the Royal Observatory. Moore and Hooke were among a small group that met at Wren's house as the "New Philosophicall Club" in 1676, at a time when the public's opinion of philosophers and the Royal Society was at a low ebb. Moore always looked for tangible results from Flamsteed's work at Greenwich: in July 1678, Moore threatened to stop Flamsteed's salary and compared his lack of published results unfavourably with the recent work by Edmond Halley.Forbes, Eric et al., pp. 642–46.


Notes


References

* *Willmoth, Frances (1993), ''Sir Jonas Moore: Practical Mathematics and Restoration Science'', The Boydell Press. *


External links

* {{DEFAULTSORT:Moore, Jonas 1617 births 1679 deaths English scientists 17th-century English mathematicians English surveyors Fellows of the Royal Society People from Higham, Lancashire People educated at Burnley Grammar School