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    Re: A C Gregory Lunar Distance
    From: Phil Guerra
    Date: 2003 Jul 28, 08:10 -0500

    Just a note:
    If you are having trouble locating the reource mentioned by Kieran Kelly,
    try this link which I used to access the document.
    ...and thanks for the information,
    ----- Original Message -----
    From: "Kieran Kelly" 
    Sent: Monday, July 28, 2003 7:09 AM
    Subject: A C Gregory Lunar Distance
    > I have recently completed a study of a lunar distance observation
    > by the Australian explorer Augustus Charles Gregory in 1856. This paper
    > completed as a guide to the explorer's detailed records filed in the
    > Mitchell Library in Sydney.
    > Although it is 60 pages long I thought some members of the list may be
    > interested in reading it as it is a practical demonstration  of how lunar
    > distance observations were undertaken in the field and the shortcuts and
    > techniques  used by professional surveyors and explorers to work out their
    > longitude. All Gregory's lunar observations  were reduced to longitude in
    > the field , unlike those of his predecessors in the United States, Lewis
    > Clark.
    > To visit the site the following URL should be used. Note that the entire
    > address has to be typed including the spaces.
    > http://users.bigpond.net.au/kjkelly/gregorylunar/A Lunar Distance
    > Calculation v1.pdf
    > Because of the length of the document and its size, it may not be
    > practicable for some members to access.
    > Gregory was Australia's most outstanding terrestrial explorer, on a par
    > James Cook, Matthew Flinders and Phillip Parker King. While Cook, Flinders
    > and King delineated the exterior coastline of this country, so Gregory
    > delivered us the interior. He invented the modern Australian horse
    > packsaddle, a revolutionary compass known as the Gregory pattern compass,
    > was a competent horologer able to strip and repair chronometers in the
    > worked out advanced methods of preserving food for long distance
    > trips and was free of scurvy throughout  his entire exploring career.
    > this career he did not lose one man and never shot an aborigine.
    > I commend his work to you with the suggestion that exploration  at this
    > level was really a work of art.
    > I welcome any feed back on this document either via the list or by email
    > kkelly@bigpond.net.au.
    > The author acknowledges the contribution of list members George Bennett
    > (Australia) George Huxtable (England) Bruce Stark (USA) for their
    > in the preparation of the material.
    > Kieran Kelly

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