Janet Taylor

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Janet Taylor (13 May 1804 – 25 January 1870[1]) born Jane Ann Ionn, was an English astronomer and navigation expert. During an active and highly successful life, she published various works on astronomy and navigation, founded an academy for the teaching of these subjects, and ran a warehouse focused on the distribution, production and repair of navigational instruments. Her Academy was highly regarded and recommended by the East India Company, Trinity House, and the Admiralty. In recognition of her work, she was awarded medals by the kings of Prussia and Netherlands, and her rule for calculating latitude from altitudes was described as "ingenious".[2]

Taylor was one of the very few women working as a scientific instrument maker in London in the 19th century.[3] Her "Mariner's Calculator", patented in 1834, was dismissed by the Admiralty.[4] However, she was awarded a Civil List pension in 1860 "In consideration of her benevolent labours among the seafaring population of London".[4]


  • Lunar Tables for Calculating Distances[5]


  1. ^ "Find A Grave Index". FamilySearch. Retrieved 26 July 2016. 
  2. ^ Mary T. Brück (25 July 2009). Women in Early British and Irish Astronomy: Stars and Satellites. Springer. p. 53. ISBN 9048124735. Retrieved 26 July 2013. 
  3. ^ http://collections.rmg.co.uk/collections/objects/11082.html
  4. ^ a b Croucher, John S. (2011). "Mrs Janet Taylor's ‘Mariner's Calculator’: assessment and reassessment". The British Journal for the History of Science. 44 (04): 493–507. doi:10.1017/S0007087410001512. 
  5. ^ Catharine M. C. Haines (1 January 2001). International Women in Science: A Biographical Dictionary to 1950. ABC-CLIO. pp. 307–. ISBN 978-1-57607-090-1. Retrieved 26 July 2013. 

Further reading[edit]

  • Croucher, John S.; Croucher, Rosalind F. (2016). Mistress of Science: The Story of the Remarkable Janet Taylor, Pioneer of Sea Navigation. Amberley. ISBN 1445659859. 
  • Croucher, John S.; Rosalind F. Croucher (December 2011). "Mrs Janet Taylor's 'Mariner's Calculator': assessment and reassessment". British Journal for the History of Science. 44 (4): 493–507. JSTOR 41428410. doi:10.1017/s0007087410001512. 
  • Gleadle, Kathryn (April 2013). "The Riches and Treasures of Other Countries': Women, Empire and Maritime Expertise in Early Victorian London". Gender and History (25.1): 7–26. 

External links[edit]