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    Re: Baffled by Baffin
    From: Marcel Tschudin
    Date: 2005 Nov 24, 14:26 +0200

    > (1) Baffin spent the day before (8th July 1612) marking out a meridian
    > line
    > on a small island. On this occasion, he doesn?t explain his method but
    > marks
    > the extremities of the line with long plumblines.
    Mentioning "plumblines": An early method of determining the north-south
    direction consisted in looking at the sun's shadow of a vertical pole on a
    horizontal plane. Could it be that he used a similar method?
    The following book from David A. King, who is a Professor at Frankfurt
    University, may contain more on techniques possibly also used in Europe
    during medieval times  http://www.brill.nl/m_catalogue_sub1.htm  The price
    of the book is however not for everybody's budget. May be you can ask your
    library to acquire the book.

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