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    Sumner Lines
    From: Gordon Talge
    Date: 2001 Feb 18, 12:04 PM

    The original "Sumner Lines" are somewhat different than we use
    today. We use the "Marc Saint Hilaire" Az-intercept method.
    
    Sumner did write a book explaining his "new" method of navigation
    Cal-State Univ., Fullerton has a copy of  it. You can check out.
    It is copyrighted  about 1840 or 1850 something like that.
    
    Norrie's Navigation book starting about 1890 has an explanation
    of the "new navigation" also.
    
    I also seem to remember that the 1938 and/or 1943 edition of
    Bowditch has a brief explanation also.
    
    --  Gordon
    --
                                  ,,,
                                 (. .)
    +-------------------------ooO-(_)-Ooo-----------------------+
    | Gordon Talge WB6YKK                 e-mail: gtalge{at}pe.net |
    | Department of Mathematics  __       Long Beach, CA        |
    | Wilson High School        / /    __  _  _  _  _ __  __    |
    | (o-    Debian / GNU /    / /__  / / / \// //_// \ \/ /    |
    | //\                     /____/ /_/ /_/\/ /___/  /_/\_\    |
    | v_/_   The Choice of the GNU Generation                   |
    |                      .oooO                                |
    |    - E Aho Laula -    (  )   Oooo. - Wider is Better -    |
    + -----------------------\ (---(  )-------------------------+
                              \_)  ) /
                                  (_/
    

       
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