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    Sextant corrections (1857)
    From: Paul Hirose
    Date: 2009 Mar 12, 14:13 -0700

    In the Monthly Notices of the Royal Astronomical Society, April 1857,
    W. H. Simms writes at the conclusion of his article on sextant corrections:
    "A traveller on land treating the sextant in the manner above described
    ought very readily to obtain his latitude to the nearest second of arc:
    and if the results of his lunar distances be subsequently corrected for
    the errors in the tabular elements of the moon's place, his longitudes
    will probably be in most instances much within ten seconds of time from
    the truth."
    That seems optimistic to me, but make up your own mind:
    Looking at the Monthly Notices in the 1850s I see many articles on
    chronometers, lunars, etc. There's even a proposal for what today we
    would call a bubble sextant.
    Select the desired periodical in the list, and enter the volume number
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    select articles.
    Often an excessive number of thumbnail images appear. With a slow
    connection it's better to turn browser graphics off, and right click on
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