Footnotes
- 2001 . The Nautical Almanac for the Year 2002 , London : The Stationary Office .
- Howse , D. 1997 . Greenwich Time and Longitude , London : Philip Wilson . gives a good explanation of longitude
- Sobel , D. 1996 . Longitude , London : Forth Estate .
- Andrews , W. , ed. 1996 . The Quest for Longitude , Cambridge, Mass : Harvard University Press .
- Betts , J. 1993 . John Harrison , London : National Maritime Museum .
- Betts , J. 1993 . John Harrison , 22 London : National Maritime Museum .
- 5. Sterling equivalent provided by http://eh.net/hmit/ accessed 26th February 2002 (http://eh.net/hmit/ accessed 26th February 2002)
- Maskelyne , Nevil . 1763 . The British Mariner's Guide London
- Maskelyne , Nevil . 1767 . Tables Requisite to be used with the Astronomical and Nautical Ephemeris London
- Howse , D. 1989 . Nevil Maskelyne: The Seaman's Astronomer , 87 Cambridge : Cambridge University Press .
- Croarken , M. “Richard Dunthorne” . In Biographical Encyclopaedia of Astronomers , Edited by: Hockey , T. Kulwar Press . forthcoming and Dictionary of National Biography
- Dunthorne , R. 1739 . The Practical Astronomy of the Moon Cambridge
- Dunthorne , R. 1746–47 . “A letter concerning the Moon's Motion” . Phil. Trans. Royal Society , 44 : 412 – 420 .
- 1749–50 . “A letter concerning the acceleration of the Moon” . Phil. Trans. Royal Society , 46 : 162 – 172 .
- 1751 . “Elements of New Tables of the Motions of Jupiter's Satellites” . Phil. Trans. Royal Society , 52 : 105
- Tooley , R.V. 1979 . Tooley's Dictionary of Mapmakers , Tring, Herts : Map Collection Publications .
- Taylor , E.G.R. 1966 . Mathematical Practitioners of Hanoverian England , 229 – 230 . Cambridge : Cambridge University Press for the Institute of Navigation .
- King , H.C. 1955 . The History of the Telescope , 90 – 91 . London : Charles Griffin .
- Molton , J.D. and Perkins , A.J. 1996 . “Errors of judgement at Greenwich in 1796” . Nature , 380 14 March : 101 – 102 .
- Schaffer , S. 1988 . “Astronomers Mark Time: Discipline and the Personal Equation” . Science in Context , 2 : 115 – 145 .
- Brooks , G.P. and Brooks , R.C. 1979 . “The Improbable Progenitor” . Journal of the Royal Astronomical Society of Canada , 73 ( 1 ) : 9 – 23 .
- Orchiston , W. and Howse , D. 2000 . “From transit of Venus to teaching navigation: the work of William Wales” . Journal Institute of Navigation , 53 Jan : 156 – 166 .
- Wilkinson , T.T. 1853 . “Mathematics and Mathematicians: the journals of the late Reuben Burrow” . Philosophical Magazine , 5 ( [4] ) Jan‐Jun : 185 – 193 .
- Eden , P. , ed. 1997 . Dictionary of Land Surveyors and local map makers of Gt. Britain and Ireland 1530–1850 , 2nd edition , 2 vols , London : British Library .
- Gilbert , R. , ed. 1836 . The Clerical Guide and Ecclesiastical Directory , London : Rivington .