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    Lunar distance methods, Shadwell, 1881
    From: Paul Hirose
    Date: 2013 Jan 26, 12:56 -0800

    My 2010 message on Admiral Sir Charles Shadwell
    did not mention another online publication which may be of interest:
    "Notes on the Reduction of Lunar Observations," 1881. Shadwell discusses
    the theory of the lunar distance method for finding time, and compares
    the major methods for reducing the observations.
    Many footnotes refer to his "Notes on Nautical Astronomy". However, W.R.
    Martin, in the preface to his own text on navigation and nautical
    astronomy (3rd edition, 1899), says Shadwell never published that work,
    "a matter of regret to all students".
    Another matter of regret is the Google scan, which is OK for the text
    but not sharp enough for easy reading of subscripts and superscrpts in
    the formulas. Unfortunately, this is common in mathematical material in
    Google books. Often a superior Microsoft scan can be found at
    archive.org, but in this case we are out of luck. The bungled table of
    contents, not hyperlinked properly, is another common Google-ism.
    Nevertheless, some may find the book interesting.
    I filter out messages with attachments or HTML.

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