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    Re: How did Sumner navigate in 1837?
    From: George Huxtable
    Date: 2003 May 16, 15:39 +0100

    Jim Thompson asked some interesting questions about the Sumner line, which
    have been well answered by Herbert Prinz.
    I wonder if he is aware that a book has just appeared, title "Line of
    Position Navigation:  Sumner and Saint-Hilaire: the two pillars of modern
    Celestial Navigation", by Michel Vanvaerenbergh and Peter Ifland. Ifland is
    the author of that wonderful book on navigational instruments, "Taking the
    I haven't seen the new book yet, but hope to soon. It's published by
    Unlimited Publishing  LLC. It includes a reprint of the entire 1843 first
    edition of Sumner's book, and translations of two articles by St Hilaire.
    George Huxtable
    contact George Huxtable by email at george@huxtable.u-net.com, by phone at
    01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy
    Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.

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