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    Graphical method by Favet / de 'Lisle
    From: Hanno Ix
    Date: 2011 Apr 18, 11:54 -0700
    I found a book:

    S. de Neuf:ville: 
    "La Navigation Sans Logarithmes" 
    Paris 1950

    The book presents a graphical solution to Saint Hillaire by means 
    of  diagrams spread over 64 pages with a resolution of 5 to 10 sm.

    Unfortunately, it does not describe the mathematical background
    but it credits "Favet" and "Rollet de L'isle". I do not know anything about them.
    and the internet is silent about them.

    However, I am interested in finding out about the math.

    Does anyone remember reading about their approach?

    Your help would be appreciated

    H
       
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