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    Re: Accuracy of Lewis and Clark Observations
    From: Bill Noyce
    Date: 2002 Aug 5, 08:52 -0400

    George Huxtable asks:
    > 1. Page 169. Preston states that one of the instruments carried by the
    > expedition was a chronometer, but there seems to be no mention of
    > chronometer-timed observations. Did the chronometer fail?
    
    Apparently the chronometer(s) were allowed to run down on several
    occasions.  Even so, you would expect it/them to be useful for
    determining the change in longitude from one day to the next, with
    dead reckoning to cover the intervals where it lost time.
    
    One interesting web site about Lewis and Clark is
        http://www.lewis-clark.org/MAPTERRINCOG/nav_mtimm.htm
    
    -- Bill
    
    
    

       
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