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    Re: determination of longitude and the prime vertical
    From: Bill B
    Date: 2007 Apr 12, 14:48 -0400

    Error. Slipped a place here:
    
    > 0.2 miles or minutes at latitude 0 = 2!0. 0.2 miles at
    > N40 = 2!6 and at N70 = 5!8. (Roughly, see Bowditch for precise conversion
    > values.)
    
    Should read:
    
    0.2 miles or minutes at latitude 0 = 0!2. 0.2 miles at N40 = 0!26 and at N70
    = 0!58. (Roughly, see Bowditch for precise conversion values.)
    
    Bill
    
    
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