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    Help needed for partial reference
    From: Geoffrey Kolbe
    Date: 2006 Oct 13, 15:07 +0100

    I have been reading a paper from the Geographical Journal in 1934,
    where Ralph Bagnold describes the navigation methods he employed
    during his expeditions into the unknown Sahara desert in 1929 and 1930.
    
    The principal instrument for celestial navigation was the theodolite,
    which was used primarily for sightings on stars. (Noon sightings on
    the sun were a "waste of valuable driving time.")
    
    He states that, "The computations were done by the usual simple
    formula on p.218 of 'Hints'."
    
    There is no reference for "Hints", which I assume is not the full
    title of the book. I would be grateful if someone would give me a
    full title (and author) and possibly also say what the formulae are.
    
    Thankyou
    
    Geoffrey Kolbe
    
    
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