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    Re: Sadler
    From: Frank Reed
    Date: 2008 Dec 23, 04:34 -0800

    Jeremy, you wrote:
    "the effect of tides on dip seems very academic to me. "
    Oh HELL yeah! It's completely academic. But it's at least worth noting that 
    folks do calculate these sorts of issues so that we can sort out trivial 
    things from important things. And this tidal business is definitely 
    trivial...  Two centuries ago, people even tried to calculate the difference 
    in dip in a north-south direction relative to an east-west direction due to 
    the oblateness of the Earth. Can you imagine?? They had no sense of scale.
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